WO2020019211A1

WO2020019211A1 - Mtc system random access method and apparatus, and storage medium

Info

Publication number: WO2020019211A1
Application number: PCT/CN2018/097091
Authority: WO
Inventors: 牟勤
Original assignee: 北京小米移动软件有限公司
Priority date: 2018-07-25
Filing date: 2018-07-25
Publication date: 2020-01-30
Also published as: CN109076617B; CN109076617A

Abstract

The disclosure relates to an MTC system random access method and apparatus, and a storage medium. The method comprises: a base station transmitting a system broadcast message, wherein the broadcast message is used to indicate random access resources of a first capability user and a second capability user; the base station determining, according to a random access channel resource when a user equipment unit transmits a random access preamble, whether a user type of the user equipment unit is the first capability user or the second capability user; the base station transmitting to the user equipment unit a physical downlink channel message comprising a random access response and reconfiguration information; and the base station using a reconfigured physical downlink channel resource indicated by the reconfiguration information to transmit to the user equipment unit a physical downlink channel message comprising a contention resolution message, wherein the reconfigured physical downlink channel resource is determined according to the user type. The disclosure provides a mechanism for transmitting different types of physical downlink channel messages regarding different user capabilities during random access, thereby improving backward compatibility of an independently deployed MTC system.

Description

Random access method, device and storage medium of MTC system

Technical field

The present disclosure relates to the field of communication technologies, and in particular, to a random access method, device, and storage medium of an MTC system.

Background technique

Machine type communication (MTC) refers to the communication between machines without human intervention. It is widely used in smart cities (such as meter reading), smart agriculture (such as temperature and humidity information collection), and smart transportation (such as sharing Bicycle \ Shared Car) and many other fields. Currently, a basic MTC communication framework is formed in a Long Term Evolution (LTE) system (mainly release 12 to release 13), which can support features such as low complexity, low cost, coverage enhancement, and power saving. The traditional MTC system is deployed in the frequency band of the LTE system (may be referred to as an in-band MTC system for short), and shares frequency resources and some channels with users of the traditional LTE system. Because the in-band MTC system is deployed in the LTE frequency band, coexistence with existing channels of LTE needs to be considered in resource mapping. In resource mapping of MTC downlink channels, such as MTC Physical Downlink Control Channel (MPDCCH) and MTC Physical Downlink Shared Channel (MPDSCH), the main consideration is not to exist in the existing LTE control channel area. , Generally, mapping is performed on the physical resources occupied by the first three orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols of the subframe.

However, considering that the current MTC system needs to be deployed based on the LTE system and lacks flexibility, the industry has already begun to consider (at release 16) the MTC system to be deployed independently, such as assigning independent spectrum and dedicated Channel / signal. Since the independently deployed MTC does not depend on the LTE system, there is no need to consider coexistence with other channels of the LTE system. Therefore, in the independent deployment mode, the MPDCCH and MPDSCH of the release 16 MTC system users (or some release 16 MTC system users) can support the use of the LTE control channel region. However, there are still user equipments that do not support the use of the LTE control channel area, such as the user equipment of the previous release.

Since the user equipment of the previous release does not support MPDCCH and MPDSCH transmission occupying the LTE control channel area, in order to ensure that such users can work in an independently deployed MTC system, the base station is best to identify such users when they have just performed random access To provide corresponding types of MPDCCH and MPDSCH transmissions. However, the current system cannot meet this requirement.

Summary of the Invention

To overcome the problems in the related art, the present disclosure provides a random access method, device, and storage medium of an MTC system.

According to a first aspect of the embodiments of the present disclosure, a random access method for an MTC system is provided, which is applied to a base station, and the method includes:

Send a system broadcast message, which is used to indicate the random access resources of the first capability user and the second capability user. The first capability user does not support physical downlink channel transmission using the LTE control channel region of the subframe. The second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

Upon receiving the random access preamble sent by the user equipment, determining a user type of the user equipment according to a random access channel resource used when the user equipment sends the random access preamble, the user type including the user equipment The first capability user or the second capability user;

Sending to the user equipment a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the physical downlink channel after reconfiguration The channel resource is determined according to the user type;

After receiving the scheduling transmission message sent by the user equipment, the physical downlink channel resource including the contention resolution message is sent to the user equipment by using the reconfigured physical downlink channel resource.

Optionally, the random access resources include: a first random access channel resource set used by the first capable user to send the random access preamble, and used by the second capable user to send the random access The second random access channel resource set of the access preamble is determined according to the random access channel resource used when the user equipment sends the random access preamble when the random access preamble sent by the user equipment is received. The user types of the user equipment include:

When receiving the random access preamble, determine whether the random access channel resource used by the user equipment when sending the random access preamble belongs to the first random access channel resource set or the second random access Channel resource set;

When belonging to the first random access channel resource set, determining that the user equipment is the first capable user;

When belonging to the second random access channel resource set, determining that the user equipment is the second capable user.

Optionally, the first random access channel resource set and the second random access channel resource set each include: time resources, frequency resources, and random access preamble resources;

The first random access channel resource set is different from at least one resource in the second random access channel resource set.

Optionally, the sending a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel to the user equipment, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and The reconfigured physical downlink channel resource is determined according to the user type, and includes:

Sending a first MTC physical downlink control channel MPDCCH message to the user equipment, where the first MPDCCH message includes first scheduling information of the random access response;

Send a first MTC physical downlink shared channel MPDSCH message to the user equipment, the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the scheduled transmission message The second scheduling information, the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.

Optionally, the random access resources include a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is an MPDCCH resource set used to schedule the random access response for the first capable user, The second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second capable user, and the sending the first MPDCCH message to the user equipment includes:

When the user equipment is the first capable user, use the MPDCCH resource in the first MPDCCH set to send the first MPDCCH message to the user equipment, where the first MPDCCH message is a first type MPDCCH message ;

When the user equipment is the second capable user, use the MPDCCH resource in the second MPDCCH set to send the first MPDCCH message to the user equipment, where the first MPDCCH message is a second type MPDCCH message ;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.

Optionally, the first MPDSCH message is sent to the user equipment, the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the scheduled transmission The second scheduling information of the message, the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type, and includes:

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a third MPDCCH set, where the third MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user. And a resource set for scheduling subsequent data transmission MPDCCHs;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third MPDCCH set;

or,

When the user equipment is the second capable user, perform MPDCCH resource reconfiguration to obtain a fourth MPDCCH set, where the fourth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capable user. And a resource set for scheduling subsequent data transmission MPDCCHs;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a second type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth MPDCCH set;

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.

Optionally, the sending the first MPDCCH message to the user equipment includes:

When the user equipment is the first capable user or the second capable user, send the first MPDCCH message to the user equipment, where the first MPDCCH message is a first type MPDCCH message;

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a fifth MPDCCH set, where the fifth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user. And MPDCCH resource set for scheduling subsequent data transmission;

When the user equipment is the second capable user, perform MPDCCH resource reconfiguration to obtain a sixth MPDCCH set, where the sixth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capable user. And MPDCCH resource set for scheduling subsequent data transmission;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fifth MPDCCH set. When the user equipment is the second capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the sixth MPDCCH set;

Optionally, the first MPDCCH set occupies a first time resource and a first frequency resource, and the second MPDCCH set occupies a second time resource and a second frequency resource;

The first time resource is different from the second time resource, and the first frequency resource is different from the second frequency resource; or

The first time resource and the second time resource are the same, and the first frequency resource and the second frequency resource are different; or

The first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are the same;

Resource mapping modes of the first MPDCCH set and the second MPDCCH set are the same or different, and the resource mapping modes include decentralized mapping or centralized mapping;

The first MPDCCH set and the second MPDCCH set are transmitted in the same or different manners, and the transmission manners include: transmit diversity or beamforming.

Optionally, after receiving the scheduled transmission message sent by the user equipment, using the reconfigured physical downlink channel resource to send to the user equipment a physical downlink channel message including a contention resolution message includes:

When the user equipment is a first-capable user, send a second MPDCCH message to the user equipment by using the MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set, and the second MPDCCH message is the A first type of MPDCCH message, and the second MPDCCH message includes third scheduling information of a contention resolution message;

Send a second MPDSCH message to the user equipment, where the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

When the user equipment is a second-capable user, use a MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set to send a second MPDCCH message to the user equipment, where the second MPDCCH message is a second type of MPDCCH Message, the second MPDCCH message includes contention for the third scheduling information;

Send a second MPDSCH message to the user equipment, where the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message includes the contention resolution message.

According to a second aspect of the embodiments of the present disclosure, a random access method for an MTC system is provided, which is applied to user equipment, and the method includes:

The random access resources of the first capability user and the second capability user are obtained by receiving a system broadcast message sent by the base station. The first capability user does not support physical downlink channel transmission using the LTE control channel region of the subframe. Second-capacity users support physical downlink channel transmission using the LTE control channel area of the subframe;

Sending a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment, where the user type includes the first capable user or the second capable user;

Receiving a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the physical downlink channel after reconfiguration The channel resource is determined according to the user type;

After sending a scheduling transmission message to the base station, use the reconfigured physical downlink channel resource to receive a physical downlink channel message including a contention resolution message sent by the base station.

Optionally, the random access resources include: a first random access channel resource set used by the first capable user to send the random access preamble, and used by the second capable user to send the random access The second random access channel resource set of the access preamble, wherein the sending a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment includes:

When the user equipment is the first capable user, sending the random access preamble to the base station by using a random access channel resource in the first random access channel resource set;

When the user equipment is the second capable user, use the random access channel resource in the second random access channel resource set to send the random access preamble to the base station.

Optionally, the receiving a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and The reconfigured physical downlink channel resource is determined according to the user type, and includes:

Receiving a first MTC physical downlink control channel MPDCCH message sent by the base station, where the first MPDCCH message includes first scheduling information of the random access response;

Receiving a first MTC physical downlink shared channel MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response The second scheduling information of the scheduling transmission message is included, the reconfiguration information is used to indicate the reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.

Optionally, the random access resources include a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is an MPDCCH resource set used to schedule the random access response for the first capable user, The second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second capable user, and receiving the first MPDCCH message sent by the base station includes:

When the user equipment is the first capable user, use the MPDCCH resource in the first MPDCCH set to receive the first MPDCCH message sent by the base station, and the first MPDCCH message is a first type MPDCCH message ;

When the user equipment is the second capable user, use the MPDCCH resource in the second MPDCCH set to receive the first MPDCCH message sent by the base station, where the first MPDCCH message is a second type of MPDCCH message ;

Optionally, receiving the first MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access The response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate a reconfigured MPDCCH resource. The reconfigured MPDCCH resource is determined according to the user type, and includes:

When the user equipment is the first capable user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a first type MPDSCH message, and the first An MPDSCH message includes the random access response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third An MPDCCH set, where the third MPDCCH set is a resource set for scheduling the MPDCCH of the contention resolution message and an MPDCCH scheduling subsequent data transmission for the first capable user;

When the user equipment is the second capable user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a second type MPDSCH message, and the first An MPDSCH message includes the random access response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth An MPDCCH set, where the fourth MPDCCH set is a resource set for scheduling the MPDCCH of the contention resolution message and scheduling of subsequent data transmission for the second capable user;

Optionally, the receiving the first MPDCCH message sent by the base station includes:

When the user equipment is the first capable user or the second capable user, receive the first MPDCCH message sent by the base station, and the first MPDCCH message is a first type MPDCCH message;

Receiving the first MPDSCH message sent by the base station, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fifth MPDCCH set, and when the user When the device is the second capability user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a sixth MPDCCH set after reconfiguration, and the fifth MPDCCH set is used to give the first capability user A resource set that schedules the MPDCCH for the contention resolution message and an MPDCCH that schedules subsequent data transmissions, and the sixth MPDCCH set is an MPDCCH that is used to schedule the contention resolution message for the second capability user and an MPDCCH that schedules subsequent data transmissions Resource collection

Optionally, after sending the scheduling transmission message to the base station, using the reconfigured physical downlink channel resource to receive a physical downlink channel message including a contention resolution message sent by the base station.

Sending a scheduling transmission message to the base station according to the second scheduling information;

When the user equipment is a first-capable user, use a MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set to receive a second MPDCCH message sent by the base station, where the second MPDCCH message is the first An MPDCCH-like message, where the second MPDCCH message includes third scheduling information of a contention resolution message;

Receiving a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

When the user equipment is a second-capable user, use a MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set to receive a second MPDCCH message sent by the base station, where the second MPDCCH message is the A second type of MPDCCH message, and the third scheduling information in the second MPDCCH message;

Receiving a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message includes the contention resolution message.

According to a third aspect of the embodiments of the present disclosure, a random access device for an MTC system is provided, which is applied to a base station, and the device includes:

The broadcast module is configured to send a system broadcast message, the broadcast message is used to indicate random access resources of the first-capability user and the second-capability user, and the first-capability user does not support the use of the LTE control channel region of the subframe. Physical downlink channel transmission, the second capability uses the LTE control channel region for physical downlink channel transmission;

A user identification module configured to determine a user type of the user equipment according to a random access channel resource used when the user equipment sends the random access preamble when the random access preamble sent by the user equipment is received, The user type includes the first capable user or the second capable user;

A sending module configured to send a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel to the user equipment, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, The physical downlink channel resources after reconfiguration are determined according to the user type;

The sending module is further configured to send a physical downlink channel message including a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource after receiving the scheduled transmission message sent by the user equipment.

Optionally, the random access resources include: a first random access channel resource set used by the first capable user to send the random access preamble, and used by the second capable user to send the random access The second random access channel resource set of the access preamble, and the user identification module is configured to:

Optionally, the sending module includes:

A first sending submodule configured to send a first MTC physical downlink control channel MPDCCH message to the user equipment, where the first MPDCCH message includes first scheduling information of the random access response;

A second sending submodule is configured to send a first MTC physical downlink shared channel MPDSCH message to the user equipment, where the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access The response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.

Optionally, the random access resources include a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is an MPDCCH resource set used to schedule the random access response for the first capable user, The second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second capable user, and the first sending sub-module is configured to:

Optionally, the second sending sub-module is configured to:

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a third MPDCCH set, where the third MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user. And MPDCCH resource set for scheduling subsequent data transmission;

or,

When the user equipment is the second capable user, perform MPDCCH resource reconfiguration to obtain a fourth MPDCCH set, where the fourth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capable user. And MPDCCH resource set for scheduling subsequent data transmission;

Optionally, the first sending sub-module is configured to:

When the user equipment is the first capable user or the second capable user, send the first MPDCCH message to the user equipment, and the first MPDCCH message is the first type MPDCCH message ;

Optionally, the second sending sub-module is configured to:

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a first reconfigured MPDCCH set, where the first MPDCCH set is used to send the first type to the first capable user MPDCCH set of MPDCCH messages;

Optionally, the sending module includes:

The reconfiguration submodule is configured to send a second MPDCCH message to the user equipment by using the MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set when the user equipment is a first-capable user. The second MPDCCH message is the first type of MPDCCH message, and the second MPDCCH message includes third scheduling information of a contention resolution message;

A third sending submodule, sending a second MPDSCH message to the user equipment, where the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

The reconfiguration sub-module is configured to send a second MPDCCH message to the user equipment by using the MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set when the user equipment is a second-capable user. The second MPDCCH message is a second type of MPDCCH message, and the second MPDCCH message includes contention for the third scheduling information;

The third sending submodule is configured to send a second MPDSCH message to the user equipment, the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message includes the contention resolution message .

According to a fourth aspect of the embodiments of the present disclosure, a random access apparatus of an MTC system is provided, which is applied to user equipment, and the apparatus includes:

An acquisition module configured to receive random access resources of a first-capability user and a second-capability user by receiving a system broadcast message sent by a base station, the first-capability user does not support physical downlink using a sub-frame LTE control channel region Channel transmission, the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

A sending module configured to send a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment, the user type including the first capable user or the second capable user ;

A receiving module configured to receive a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, The physical downlink channel resources after reconfiguration are determined according to the user type;

The receiving module is further configured to receive the physical downlink channel message including the contention resolution message sent by the base station by using the reconfigured physical downlink channel resource after sending the scheduling transmission message to the base station.

Optionally, the random access resources include: a first random access channel resource set used by the first capable user to send the random access preamble, and used by the second capable user to send the random access The access preamble second random access channel resource set, and the sending module is configured to:

Optionally, the receiving module includes:

A first receiving submodule configured to receive a first MTC physical downlink control channel MPDCCH message sent by the base station, where the first MPDCCH message includes first scheduling information of the random access response;

The second receiving submodule is configured to receive a first MTC physical downlink shared channel MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message includes the random access response and the MPDCCH retransmission. Configuration information, the random access response includes second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is based on the user OK.

Optionally, the random access resources include a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is an MPDCCH resource set used to schedule the random access response for the first capable user, The second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second capable user, and the first receiving submodule is configured to:

Optionally, the second receiving sub-module is configured to:

Optionally, the first receiving sub-module is configured to:

When the user equipment is the first capable user or the second capable user, receive the first MPDCCH message sent by the base station, and the first MPDCCH message is the first type MPDCCH message ;

Optionally, the second receiving sub-module is configured to:

Optionally, the sending module is further configured to send a scheduling transmission message to the base station according to the second scheduling information;

The receiving module further includes:

A third receiving submodule, configured to receive a second MPDCCH message sent by the base station by using the MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set when the user equipment is a first-capable user, the A second MPDCCH message is the first type MPDCCH message, and the second MPDCCH message includes third scheduling information of a contention resolution message;

A fourth receiving submodule is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes The contention resolution message;

or,

The third receiving submodule is configured to receive the second MPDCCH sent by the base station by using the MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set when the user equipment is a second-capable user. Message, the second MPDCCH message is the second type of MPDCCH message, and the third scheduling information in the second MPDCCH message;

The fourth receiving sub-module is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message The contention resolution message is included.

According to a fifth aspect of the embodiments of the present disclosure, a random access device of an MTC system is provided, including: a processor; a memory for storing processor-executable instructions;

Wherein, the processor is configured to send a system broadcast message, the broadcast message is used to indicate random access resources of the first capability user and the second capability user, and the first capability user does not support LTE using a subframe The control channel region performs physical downlink channel transmission, and the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

According to a sixth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement randomness of the MTC system provided by the first aspect of the present disclosure. Steps of the access method.

According to a seventh aspect of the embodiments of the present disclosure, a random access apparatus of an MTC system is provided, which is applied to user equipment and includes: a processor;

Memory for storing processor-executable instructions;

Wherein, the processor is configured to obtain random access resources of the first capability user and the second capability user by receiving a system broadcast message sent by the base station, and the first capability user does not support the LTE control channel using a subframe. Physical downlink channel transmission in an area, and the second capability user supports physical downlink channel transmission using a sub-frame LTE control channel area;

According to an eighth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement randomness of the MTC system provided by the second aspect of the present disclosure. Steps of the access method.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the technical solution provided by the embodiment of the present disclosure, the base station sends a system broadcast message, which is used to indicate a random access resource of the first capability user and the second capability user, and the first capability user does not support LTE using a subframe. The control channel area is used for physical downlink channel transmission. The second capability user supports the use of subframe LTE control channel area for physical downlink channel transmission. When receiving the random access preamble sent by the user equipment, the base station sends the random access according to the user equipment. The random access channel resources used when entering the preamble determine whether the user type of the user equipment is the first-capacity user or the second-capacity user; then the base station sends to the user equipment a random access response and reconfiguration information of the physical downlink channel. Physical downlink channel message. The reconfiguration information is used to indicate the reconfigured physical downlink channel resource. The reconfigured physical downlink channel resource is determined by the base station according to the type of user. After receiving the scheduling transmission message sent by the user equipment, the base station Using the reconfigured physical downlink channel resources to the The user equipment transmitting a physical downlink channel message comprising a contention resolution message. In this disclosure, different random access resources are configured for user equipment with different capabilities, and a mechanism for sending different types of physical downlink channel messages for different user capabilities in a random access process is provided, which can be applied to the previous release version. User equipment, which can improve the backward compatibility of independently deployed MTC systems.

It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and should not limit the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings herein are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure, and together with the description serve to explain the principles of the present disclosure.

Fig. 1 is a flow chart showing a random access method of an MTC system according to an exemplary embodiment.

FIG. 2 is a flowchart of a user type determiner according to the embodiment shown in FIG. 1. FIG.

Fig. 3 is a flowchart of another random access method of an MTC system according to the embodiment shown in Fig. 1.

Fig. 4 is a flowchart of still another random access method of an MTC system according to the embodiment shown in Fig. 1.

Fig. 5 is a flow chart showing still another random access method of an MTC system according to an exemplary embodiment.

FIG. 6 is a flowchart of a random access preamble sending method according to the embodiment shown in FIG. 5.

FIG. 7 is a flowchart of still another random access method of an MTC system according to the embodiment shown in FIG. 5.

Fig. 8 is a flowchart of still another random access method of an MTC system according to the embodiment shown in Fig. 1.

Fig. 9 is a block diagram showing a random access device of an MTC system according to an exemplary embodiment of the present disclosure.

Fig. 10 is a block diagram of a sending module according to the embodiment shown in Fig. 9.

Fig. 11 is a block diagram of another sending module according to the embodiment shown in Fig. 9.

Fig. 12 is a block diagram of a random access device of another MTC system according to an exemplary embodiment of the present disclosure.

Fig. 13 is a block diagram of a receiving module according to the embodiment shown in Fig. 12.

Fig. 14 is a block diagram of another sending module according to the embodiment shown in Fig. 12.

Fig. 15 is a block diagram illustrating another random access device of an MTC system according to an exemplary embodiment.

Fig. 16 is a block diagram illustrating still another random access method of an MTC system according to an exemplary embodiment.

detailed description

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with some aspects of the present disclosure, as detailed in the appended claims.

Before introducing the random access method of the MTC system provided by the present disclosure, the application scenarios involved in the embodiments of the present disclosure are first introduced. The MTC system may be independently deployed. Among them, for an independently deployed MTC system, an independent frequency spectrum, a dedicated channel and a signal are configured. Here, the physical channels of the MTC system are first introduced. The physical channels of the MTC system may include: Physical Downlink Control Channel (MTC) Downlink Control Channel (MPDCCH), MTC Physical Downlink Shared Channel (MPDSCH) ), Physical uplink control channel (MTC Physical Uplink Control Channel, MPUCCH), MTC physical uplink shared channel (Physical Uplink Shared Channel, MPUSCH), of which MPDCCH and MPUCCH are usually used to transmit control information, MPDSCH and MPUSCH are usually Used to transfer data information. In the embodiments of the present disclosure, the physical downlink channel is mainly involved, that is, the transmission of MPDCCH and MPDSCH. On the other hand, for independently deployed MTC systems, it is supported to occupy the LTE control channel area of a subframe when transmitting MPDCCH and MPDSCH messages. Since not all user equipments (UEs) have the ability to use the LTE control channel area of a subframe for physical downlink channel transmission, in each embodiment of the present disclosure, for user equipments of different capabilities, allocation can be made Different resources send different types of physical downlink channel messages.

Generally, random access may include non-competitive random access and competitive random access. The random access process involved in the embodiments of the present disclosure may be competitive random access. The competitive random access process usually has four steps. The four signalings (ie Msg1-4) in the competing random access are transmitted separately, including:

First, the user equipment sends a Random Access Preamble to a base station (such as an eNodeB). Among them, in the random access process, the random access preamble is called Msg1, the user equipment can randomly select a preamble code to initiate Msg1, and the base station can select some or all of the 64 preamble codes for random access. The Msg1 is carried in On a physical random access channel (Physical Random Access Access, PRACH).

Secondly, the base station replies a Random Access Response (RAR) to the user equipment. Among them, after detecting that the user equipment sends Msg1, the base station sends a random access response to the user to inform the user equipment of the available uplink resource information. In the random access process, the random access response is called Msg2. Msg2 is organized by the media access control (MAC) layer of the base station. The base station uses MPDCCH to schedule Msg2, and the Msg2 is carried by MPDSCH. It can simultaneously respond to random access requests from multiple user equipments. Msg2 contains the uplink transmission timing advance , Scheduling information of Msg3, temporary C-RNTI (CellRadioNetworkTemporaryIdentifier, cell wireless network temporary identifier), and so on.

Then, the user equipment sends a first scheduled transmission message (First scheduled transmission), which is referred to as a scheduled transmission for short, to the base station. Among them, the scheduling transmission message in the random access process is called Msg3. After receiving the Msg2, the user equipment transmits Msg3 on the uplink resources indicated by the scheduling information therein. Generally, for different scenarios, Msg3 contains different contents, such as initial access, connection re-establishment, handover, and uplink / downlink data arrival.

Finally, after the competition is successful, the base station sends a contention resolution message to the user equipment. The contention resolution message is called Msg4 during the random access process.

Based on the above application scenario, the random access method of the MTC system provided by the present disclosure is introduced below.

Fig. 1 is a flowchart illustrating a random access method of an MTC system according to an exemplary embodiment. The method is used in a base station. As shown in Fig. 1, the method may include the following steps.

In step S11, a system broadcast message is sent, where the broadcast message is used to indicate the random access resources of the first capability user and the second capability user.

The first capability user does not support physical downlink channel transmission using the LTE control channel region of the subframe, and the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe.

In step S12, when a random access preamble sent by the user equipment is received, a user type of the user equipment is determined according to a random access channel resource used when the user equipment sends the random access preamble, and the user type includes the The first capability user or the second capability user.

After the base station, such as the eNB, sends the system broadcast message, the user equipment that receives the system broadcast message can choose whether to send a random access preamble, that is, Msg1 random access Channel resources, so that the base station can detect the Msg1 sent by the user equipment after sending the system broadcast message. When receiving the Msg1 sent by a certain user equipment, it can be determined according to the random access channel resource of the Msg1 sent by the user equipment. Whether the user type of the user equipment is a first-capability user or a second-capability user.

In step S13, a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel is sent to the user equipment, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration. The physical downlink channel resources are determined according to the user type.

Wherein, the base station may configure different physical downlink channel resources when the user type of the user equipment is the first capability user or the second capability user when reconfiguring the physical downlink channel resources. Therefore, the reconfiguration indicated in the reconfiguration information The configured physical downlink channel resources are determined according to the user type.

In step S14, after receiving the scheduling transmission message sent by the user equipment, the physical downlink channel resource including the contention resolution message is sent to the user equipment by using the reconfigured physical downlink channel resource.

In the above technical solution, different random access resources are configured for user equipment with different capabilities, and a mechanism for sending different types of physical downlink channel messages for different user capabilities in the random access process is provided, which can be applied to the previous The release version of the user equipment can therefore improve the backward compatibility of independently deployed MTC systems.

The above-mentioned random access resources may include: a first random access channel resource set used by the first capable user to send the random access preamble, and used by the second capable user to send the random access A second random access channel resource set of a preamble. FIG. 2 is a flowchart of a user type determiner according to the embodiment shown in FIG. 1. As shown in FIG. 2, when a random access preamble sent by a user equipment is received in step S12, according to the user, The random access channel resources used when the device sends the random access preamble to determine the user type of the user equipment may include the following steps:

In step S121, upon receiving the random access preamble, it is determined whether the random access channel resource used by the user equipment when sending the random access preamble belongs to the first random access channel resource set or the second random access. Channel resource collection.

In step S122, when belonging to the first random access channel resource set, it is determined that the user equipment is the first capable user.

In step S123, when belonging to the second random access channel resource set, it is determined that the user equipment is the second capable user.

Further, for random access channel resources, different sets of random access channel resources can be defined from three dimensions: time, frequency, and codeword (ie, Preamble code). Therefore, both the first random access channel resource set and the second random access channel resource set may include: time resources, frequency resources, and random access preamble resources, and the first random access channel resource set and the At least one resource in the second random access channel resource set is different. Example:

The first random access channel resource set includes a first time resource, a first frequency resource, and a first random access preamble set, and the second random access channel resource set includes a second time resource and a second frequency resource. And a second random access preamble set. Then there are three ways to divide the random access channel resources:

First method: the first time resource and the second time resource are the same, the first frequency resource and the second frequency resource are the same, and the first random access preamble set and the second random access preamble set are different.

For example, if the first random access channel resource set is described as RACH Resource Set # 1 and the second random access channel resource set is described as RACH Resource Set # 2, the first method may be as shown in Table 1.

Table 1

随机接入信道资源Random access channel resources	对应的资源Corresponding resources
RACH Resource set#1RACH Resource Set # 1	T，F，Preamble#x～Preamble#yT, F, Preamble # x ～ Preamble # y
RACH Resource set#2RACH Resource set # 2	T，F，Preamble#m～Preamble#nT, F, Preamble # m ～ Preamble # n

Among them, T represents a time resource, such as a subframe and a time slot, F represents a frequency resource, such as a Physical Resource Block (PRB), and Preamble represents a preamble. As shown in Table 1, the time resources and frequency resources of RACH Resource Set # 1 and RACH Resource Set # 2 are the same, both T and F, and the Preamble codes are different.

The second method: the first time resource and the second time resource are the same, the first frequency resource and the second frequency resource are different, and the first random access preamble set and the second random access preamble set are the same.

For example, the second method can be shown in Table 2.

Table 2

随机接入信道资源Random access channel resources	对应的资源Corresponding resources
RACH Resource set#1RACH Resource Set # 1	T，F1，Preamble#x～Preamble#yT, F1, Preamble # x ～ Preamble # y
RACH Resource set#2RACH Resource set # 2	T，F2，Preamble#x～Preamble#yT, F2, Preamble # x ～ Preamble # y

As shown in Table 2, the time resource of RACH Resource Set # 1 and RACH Resource Set # 2 is T, the frequency resource of RACH Resource Set # 1 is F1, the frequency resource of RACH Resource Set # 2 is F2, and the preamble codes are both Preamble # x ～ Preamble # y.

Third way: the first time resource and the second time resource are different, the first frequency resource and the second frequency resource are the same, and the first random access preamble set and the second random access preamble set are the same.

For example, the third method may be as shown in Table 3.

table 3

随机接入信道资源Random access channel resources	对应的资源Corresponding resources
RACH Resource set#1RACH Resource Set # 1	T1，F，Preamble#x～Preamble#yT1, F, Preamble # x ～ Preamble # y
RACH Resource set#2RACH Resource set # 2	T2，F，Preamble#x～Preamble#yT2, F, Preamble # x ～ Preamble # y

As shown in Table 3, the frequency resources of RACH Resource Set # 1 and RACH Resource Set # 2 are both F, the time resource of RACH Resource Set # 1 is T1, the time resource of RACH Resource Set # 2 is T2, and the preamble codes are both Preamble # x ～ Preamble # y. In addition, optionally, the time resources, frequency resources, and preamble codes of RACH Resource Set # 1 and RACH Resource Set # 2 may be different.

Therefore, upon receiving the Msg1, it is determined whether the RACH Resource used by the user equipment when sending the Msg1 belongs to the RACH Resource Set # 1 or the RACH Resource Set # 2. When it belongs to the first RACH Resource Set # 1, it is determined that the user equipment is the first capable user. When it belongs to the RACH Resource Set # 2, it is determined that the user equipment is the second capable user.

FIG. 3 is a flowchart of another random access method of the MTC system according to the embodiment shown in FIG. 1. As shown in FIG. 3, the step S13 includes sending a random access response and a physical downlink to the user equipment. The physical downlink channel message of the channel reconfiguration information may include the following steps:

In step S131, a first MPDCCH message is sent to the user equipment, and the first MPDCCH message includes first scheduling information of the random access response.

The first scheduling information may include carrying the random access response, that is, resource information of the MPDSCH carrying Msg2, and a modulation mode when the base station sends the MPDSCH message carrying Msg2. In order that the user equipment obtains the first scheduling information after parsing the first MPDCCH message, thereby knowing the resource information of the MPDSCH carrying the Msg2 and the modulation method, the user equipment can know how to receive the first MPDSCH message in step S132.

In step S132, a first MPDSCH message is sent to the user equipment. The first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes second scheduling information of the scheduling transmission message. The reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.

Further, for different types of users, the MPDCCH message and the MPDSCH message may also be divided into two types, which may include a first type (type1) and a second type (type2).

Among them, the first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe, and the first type of MPDSCH message is an unoccupied subframe. The MPDSCH message of the LTE control channel region. The second type of MPDCCH message is an MPDSCH message of the LTE control channel region occupying a subframe.

Therefore, in the first implementation solution of this embodiment, when the first MPDCCH message and the MPDSCH message are sent to the user equipment, the corresponding types of MPDCCH messages and MPDSCH messages may be sent for the user type of the user equipment. Correspondingly, the random access resource described in step S11 may further include: a first MPDCCH set and a second MPDCCH set, where the first MPDCCH set is an MPDCCH resource set for scheduling a random access response for the first capable user The second MPDCCH set is an MPDCCH resource set used to schedule a random access response for a second-capable user. The resource mapping of the first MPDCCH set does not occupy the LTE control channel region of the subframe, and the resource mapping of the second MPDCCH set occupies the LTE control channel region of the subframe. In addition, the two MPDCCH sets can also be divided from the frequency domain or the time domain.

For example, the first MPDCCH set occupies a first time resource and a first frequency resource, and the second MPDCCH set occupies a second time resource and a second frequency resource. There are three ways to divide:

The first way: the first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are different.

The second method: the first time resource and the second time resource are the same, and the first frequency resource and the second frequency resource are different; or

The third method: the first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are the same.

It should also be noted that when the base station performs random access resource allocation for the first-capacity user and the second-capacity user, it can perform independent configuration or joint configuration. Among them, independent configuration can be understood as each parameter in the resource set of the first capability user and each parameter in the resource set of the second capability user are independent; joint configuration can be understood as the resource set of the first capability user and the second Some parameters in the resource set of the capability user can be configured together, that is, they can adopt the same value.

Some of the parameters described above may be, for example, a transmission method and a resource mapping method. The resource mapping methods of the first MPDCCH set and the second MPDCCH set may be the same or different, and the transmission methods of the first MPDCCH set and the second MPDCCH set may be the same. Or different, where the sending mode includes: sending diversity or beamforming, and the resource mapping mode includes decentralized mapping or centralized mapping.

For example, the first MPDCCH set is represented as MPDCCH set # 1, and the second MPDCCH set is represented as MPDCCH set # 2. The random access resources of the first-capability users and the second-capability users after independent configuration can be shown in the table. 4 and Table 5.

Table 4

RACH Resource set#1RACH Resource Set # 1	RACH Resource set#1RACH Resource Set # 1
T1，F1，Preamble#x～Preamble#yT1, F1, Preamble # x ～ Preamble # y	T2，F2，Preamble#m～Preamble#nT2, F2, Preamble # m ～ Preamble # n

As shown in Table 4, the frequency resources of RACH Resource Set # 1 and RACH Resource Set # 2 are F1 and F2 respectively, and the time resources of RACH Resource Set # 1 and RACH Resource Set # 2 are T1 and T2, and RACH Resource Set # The Preamble codes of 1 and RACH Resource Set # 2 are Preamble # x ~ Preamble # y and Preamble # m ~ Preamble # n.

table 5

MPDCCH set#1MPDCCH set # 1	MPDCCH set#2MPDCCH set # 2
T1，F1T1, F1	T2，F2T2, F2
资源映射方式：分散性映射Resource mapping method: decentralized mapping	资源映射方式：集中性映射Resource mapping mode: centralized mapping
发送方式：发送分集Sending method: Sending diversity	发送方式：波束赋形Transmission method: Beamforming

As shown in Table 5, the time resources of MPDCCH set # 1 and MPDCCH set # 2 are T1 and T2, and the frequency resources of MPDCCH set # 1 and MPDCCH set # 2 are F1 and F2. The resource mapping method and transmission method are also different. .

If the joint configuration is adopted, the random access resources of the configured first-capability users and second-capacity users can be shown in Table 6.

Table 6

MPDCCH set#1MPDCCH set # 1	MPDCCH set#2MPDCCH set # 2
T1，F1T1, F1	T2，F2T2, F2
资源映射方式：集中性映射Resource mapping mode: centralized mapping	资源映射方式：集中性映射Resource mapping mode: centralized mapping
发送方式：波束赋形Transmission method: Beamforming	发送方式：波束赋形Transmission method: Beamforming

As shown in Table 6, the resource mapping mode and transmission mode of MPDCCH set # 1 and MPDCCH set # 2 in the joint configuration are the same.

Correspondingly, sending the first MPDCCH message to the user equipment as described in step S131 may include the following steps:

When the user equipment is a first-capable user, the first MPDCCH message is sent to the user equipment by using MPDCCH resources in the first MPDCCH set, where the first MPDCCH message is the first type of MPDCCH message.

When the user equipment is the second capable user, the first MPDCCH message is sent to the user equipment by using the MPDCCH resources in the second MPDCCH set, and the first MPDCCH message is the second type MPDCCH message.

Correspondingly, sending the first MPDSCH message to the user equipment as described in step S132 may include the following steps:

First, when the user equipment is a first-capable user, perform MPDCCH resource reconfiguration to obtain a third MPDCCH set. The third MPDCCH set is a resource set for scheduling an MPDCCH for the first capability user with a contention resolution message and an MPDCCH scheduling subsequent data transmission.

Second, the first MPDSCH message is sent to the user equipment. The first MPDSCH message is a first type MPDSCH message. The first MPDSCH message includes the random access response and MPDCCH reconfiguration information. The random access response is Contains the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third MPDCCH set.

or,

When the user equipment is a second-capability user, perform MPDCCH resource reconfiguration to obtain a fourth MPDCCH set, where the fourth MPDCCH set is an MPDCCH for scheduling a contention resolution message for the second-capability user and an MPDCCH for scheduling subsequent data transmission. Resource collection.

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a second type MPDSCH message, the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the random access response The second scheduling information is used to indicate that the reconfigured MPDCCH resource is a fourth MPDCCH set.

That is, before sending an MPDSCH message carrying Msg2, the base station needs to reconfigure MPDCCH resources for subsequent Msg4 transmission. During reconfiguration, the MPDCCH resources need to be divided according to the user type of the user equipment. The third MPDCCH The configuration method of the set and the fourth MPDCCH set is the same as the configuration method of the first MPDCCH set and the second MPDCCH set described above, and details are not described herein again. On the other hand, the resources of the MPDCCH that schedules subsequent data transmissions can also be configured together during the reconfiguration. The subsequent data transmissions can be understood as the subsequent data transmissions after the random access process succeeds. The data transmissions are, for example, It can be service data of user equipment.

The second scheduling information may include resource information of the MPUSCH that carries the scheduling transmission message, that is, Msg3, and a modulation mode that the user equipment should use when sending the MPUSCH message that carries the Msg3. So that the user equipment obtains Msg2 after parsing the first MPDSCCH message, and obtains the second scheduling information from Msg2, thereby knowing the resource information of the MPUSCH carrying Msg3 and the modulation method, so that the user equipment can know how to send Msg3.

In the second implementation solution of this embodiment, when sending the first MPDCCH message and the MPDSCH message to the user equipment, the first MPDCCH message and the MPDSCH message may be sent regardless of whether the user type is the first capability user or the second capability user. Both can use the first category. Then, the random access resource described in step S11 may not be divided into MPDCCH resources first. Correspondingly, sending the first MPDCCH message to the user equipment as described in step S131 may include:

When the user equipment is a first capable user or a second capable user, the first MPDCCH message is sent to the user equipment, and the first MPDCCH message is a first type MPDCCH message.

First, when the user equipment is a first-capability user, MPDCCH resource reconfiguration is performed to obtain a fifth MPDCCH set. The fifth MPDCCH set is used for scheduling the MPDCCH of the contention resolution message for the first-capacity user and scheduling subsequent data transmission. The resource set of the MPDCCH; or

When the user equipment is a second-capability user, perform MPDCCH resource reconfiguration to obtain a sixth MPDCCH set. The sixth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second-capability user and an MPDCCH for scheduling subsequent data transmission. Resource collection.

Second, the first MPDSCH message is sent to the user equipment. The first MPDSCH message is a first type MPDSCH message. The first MPDSCH message includes the random access response and MPDCCH reconfiguration information. The random access response is Contains the second scheduling information.

That is, regardless of whether the user equipment is a first-capacity user or a second-capacity user, the MPDCCH messages scheduling Msg2 are all first-type MPDCCH messages, and the MPDSCH messages carrying Msg2 are all first-type MPDSCH messages. However, when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fifth MPDCCH set. When the user equipment is the second capable user, the reconfiguration information is used to indicate The reconfigured MPDCCH resource is the sixth MPDCCH set. The configuration method of the fifth MPDCCH set and the sixth MPDCCH set is the same as the configuration method of the first MPDCCH set and the second MPDCCH set described above, and details are not described herein again.

FIG. 4 is a flowchart of another random access method of the MTC system according to the embodiment shown in FIG. 1. As shown in FIG. 4, after receiving the scheduling transmission message sent by the user equipment as described in step S14, FIG. Sending the physical downlink channel resource including the contention resolution message to the user equipment after the reconfigured physical downlink channel resource may include the following steps.

In step S141, after receiving the scheduling transmission message sent by the user equipment, the second MPDCCH message is sent to the user equipment by using the reconfigured physical downlink channel resource. The second MPDCCH message includes a third contention resolution message. Scheduling information.

The third scheduling information may include the contention resolution message, that is, the resource information of the MPDSCH carrying Msg4, and the modulation mode when the base station sends the MPDSCH message carrying Msg4. So that the user equipment obtains the third scheduling information after parsing the second MPDCCH message, so as to know the resource information of the MPDSCH carrying the Msg4 and the modulation method, so that the user equipment can know how to receive the second MPDSCH message in step S142.

In step S142, a second MPDSCH message is sent to the user equipment, and the second MPDSCH message includes the contention resolution message.

Wherein, if the random access procedure uses the first implementation solution in this embodiment, steps S141 and S142 may include:

When the user equipment is a first-capable user, a second MPDCCH message is sent to the user equipment by using the MPDCCH resources in the third MPDCCH set, where the second MPDCCH message is a first type MPDCCH message, and the second MPDCCH message includes The third scheduling information of the contention resolution message.

Send a second MPDSCH message to the user equipment, where the second MPDSCH message is the first type of MPDSCH message, and the second MPDSCH message includes the contention resolution message.

or,

When the user equipment is a second capable user, a second MPDCCH message is sent to the user equipment by using the MPDCCH resources in the fourth MPDCCH set, where the second MPDCCH message is a second type MPDCCH message, and the second MPDCCH message includes Compete for the third scheduling information;

If the random access procedure uses the second implementation solution in this embodiment, steps S141 and S142 may include:

When the user equipment is a first-capable user, use a MPDCCH resource in the fifth MPDCCH set to send a second MPDCCH message to the user equipment. The second MPDCCH message is a first type MPDCCH message, and the second MPDCCH message includes The third scheduling information of the contention resolution message.

or,

When the user equipment is a second-capable user, a second MPDCCH message is sent to the user equipment by using the MPDCCH resources in the sixth MPDCCH set, where the second MPDCCH message is a second type MPDCCH message, and the second MPDCCH message includes Compete for the third scheduling information;

That is, when sending the MPDCCH message scheduling Msg4, the base station should use the MPDCCH resource in the MPDCCH set corresponding to the user equipment user type to send the MPDCCH message, and then send the MPDSCH message carrying Msg4 to the user equipment, the transmission type and MPDSCH message corresponding to the user type of the user equipment.

Fig. 5 is a flow chart showing still another random access method of an MTC system according to an exemplary embodiment. The method is used in a user equipment. As shown in Fig. 5, the method may include the following steps.

In step S51, a random access resource of the first capability user and the second capability user is acquired by receiving a system broadcast message sent by the base station.

In step S52, a random access preamble is sent to the base station by using a random access resource corresponding to the user type of the user equipment, and the user type includes the first capable user or the second capable user.

After the base station, such as the eNB, sends the system broadcast message, the user equipment that receives the system broadcast message can choose to send a random access preamble, that is, Msg1 random access, according to whether it is a first-capability user or a second-capability user. Channel resources, so that the base station can detect the Msg1 sent by the user equipment after sending the system broadcast message. When receiving the Msg1 sent by a user equipment, it can be determined according to the random access channel resources of the user equipment to send the Msg1. Whether the user type of the user equipment is a first-capability user or a second-capability user.

In step S53, a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station is received, and the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration. The physical downlink channel resources are determined according to the user type.

In step S54, after sending the scheduling transmission message to the base station, the physical downlink channel resource including the contention resolution message sent by the base station is received using the reconfigured physical downlink channel resource.

The above-mentioned random access resources may include: a first random access channel resource set used by the first capable user to send the random access preamble, and used by the second capable user to send the random access A second random access channel resource set of a preamble. FIG. 6 is a flowchart of a random access preamble sending method according to the embodiment shown in FIG. 5. As shown in FIG. 6, step S52 uses a random access resource corresponding to a user type of the user equipment. To send a random access preamble to the base station, including:

In step S521, when the user equipment is a first-capable user, use the random access channel resource in the first random access channel resource set to send the random access preamble to the base station.

In step S522, when the user equipment is a second-capable user, use the random access channel resource in the second random access channel resource set to send the random access preamble to the base station.

Further, for the random access channel resource, different sets of random access channel resource sets can be defined from three dimensions of time, frequency, and preamble code, so that the first random access channel resource set includes: a first time resource, a first Frequency resources and a first random access preamble set, and the second random access channel resource set includes: a second time resource, a second frequency resource, and a second random access preamble set. Then there are three ways to divide the random access channel resources:

The third method: the first time resource and the second time resource are different, the first frequency resource and the second frequency resource are the same, and the first random access preamble set and the second random access preamble set are the same.

By way of example, the above three methods are the same as the three random access channel resource division methods described above, and reference may be made to any of the contents shown in Tables 1 to 3, which will not be repeated here.

FIG. 7 is a flowchart illustrating another random access method of the MTC system according to the embodiment shown in FIG. 5. As shown in FIG. 5, the receiving base station includes a random access response and a physical downlink channel sent by the receiving base station as described in step S53. The physical downlink channel message of the reconfiguration information may include the following steps:

In step S531, a first MPDCCH message sent by a base station is received, where the first MPDCCH message includes first scheduling information of a random access response.

The first scheduling information may include carrying the random access response, that is, resource information of the MPDSCH carrying Msg2, and a modulation mode when the base station sends the MPDSCH message carrying Msg2. In order that the user equipment obtains the first scheduling information after parsing the first MPDCCH message, thereby knowing the resource information of the MPDSCH carrying the Msg2 and the modulation method, the user equipment can know how to receive the first MPDSCH message in step S532.

In step S532, a first MPDSCH message sent by the base station is received according to the first scheduling information. The first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the scheduling transmission message. The second scheduling information is used to indicate the reconfigured MPDCCH resources, and the reconfigured MPDCCH resources are determined according to the user type.

For different types of users, the MPDCCH message and MPDSCH message can also be divided into the first and second types described above. In the first implementation of this embodiment, the base station sends the first MPDCCH message and MPDSCH to the user equipment. When sending a message, a corresponding type of MPDCCH message and MPDSCH message may be sent according to the user type of the user equipment. Correspondingly, receiving the first MPDCCH message sent by the base station in step S531 includes:

When the user equipment is a first-capable user, use a MPDCCH resource in the first MPDCCH set to receive a first MPDCCH message sent by the base station, where the first MPDCCH message is the first type of MPDCCH message;

When the user equipment is a second-capable user, use the MPDCCH resource in the second MPDCCH set to receive the first MPDCCH message sent by the base station, where the first MPDCCH message is the second type MPDCCH message.

Correspondingly, receiving the first MPDSCH message sent by the base station according to the first scheduling information in step S532 may include the following steps:

When the user equipment is a first-capable user, receive the first MPDSCH message sent by the base station according to the first scheduling information. The first MPDSCH message is a first type of MPDSCH message. The first MPDSCH message includes the random access response and MPDCCH reconfiguration information. The random access response includes the second scheduling information. The reconfiguration information is used for It is indicated that the reconfigured MPDCCH resource is a third MPDCCH set, and the third MPDCCH set is a resource set for scheduling an MPDCCH for the first capability user for a contention resolution message and an MPDCCH for scheduling subsequent data transmission.

When the user equipment is a second-capable user, receive the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a second type MPDSCH message, and the first MPDSCH message includes the random access Incoming response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fourth MPDCCH set, and the fourth MPDCCH set is used for The second capability user schedules the resource set of the MPDCCH of the contention resolution message and the MPDCCH of the subsequent data transmission.

That is, before sending a random access response bearing the MPDSCH message of Msg2, the base station needs to reconfigure the MPDCCH resources for subsequent Msg4 transmission. During reconfiguration, the MPDCCH resources need to be configured according to the user type of the user equipment. Divided, the third MPDCCH set and the fourth MPDCCH set are obtained after the base station performs MPDCCH resource reconfiguration. The configuration method is the same as that of the first MPDCCH set and the second MPDCCH set described above, and details are not described again. On the other hand, the resources of the MPDCCH that schedules subsequent data transmissions can also be configured together during the reconfiguration. The subsequent data transmissions can be understood as the subsequent data transmissions after the random access process succeeds. It can be service data of user equipment.

The second scheduling information may include the scheduling transmission message, that is, the resource information of the MPUSCH carrying the Msg3, and the modulation mode that the user equipment should use when sending the MPUSCH message carrying the Msg3. So that the user equipment obtains Msg2 after parsing the first MPDSCCH message, and obtains the second scheduling information from Msg2, thereby knowing the resource information of the MPUSCH carrying Msg3 and the modulation method, so that the user equipment can know how to send Msg3.

When the first MPDCCH message and the MPDSCH message are sent to the user equipment in the second implementation solution of this embodiment, the first MPDCCH message and the MPDSCH message may be the same regardless of whether the user type is the first capability user or the second capability user. The first category can be used. Then, the MPDCCH resource division may not be performed first. Correspondingly, receiving the first MPDCCH message sent by the base station in step S531 includes:

When the user equipment is a first-capable user or a second-capable user, the first MPDCCH message sent by the base station is received, and the first MPDCCH message is a first-type MPDCCH message.

Correspondingly, receiving the first MPDSCH message sent by the base station according to the first scheduling information according to step S532 may include:

Receive the first MPDSCH message sent by the base station, the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the Second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fifth MPDCCH set; when the user equipment is the second capable user, the reconfiguration information The configuration information is used to indicate that the reconfigured MPDCCH resource is a sixth MPDCCH set, and the fifth MPDCCH set is a resource set of an MPDCCH for scheduling the contention resolution message for the first capable user and an MPDCCH scheduling for subsequent data transmission. The MPDCCH set is a resource set used to schedule an MPDCCH for the contention resolution message and a subsequent MPDCCH for a second capability user.

Among them, in the second implementation solution, when sending the MPDCCH scheduling Msg2, the MPDCCH resource reconfiguration is not performed at the base station first, instead of dividing the different MPDCCH sets according to whether the user equipment is the first capability user or the second capability user. Divide at a later time. For example, the fifth MPDCCH set occupies a first time resource and a first frequency resource, and the sixth MPDCCH set occupies a second time resource and a second frequency resource;

Resource mapping modes of the fifth MPDCCH set and the sixth MPDCCH set are the same or different, and the resource mapping modes include decentralized mapping or centralized mapping;

The fifth MPDCCH set and the sixth MPDCCH set are transmitted in the same or different manners, and the transmission manners include: transmit diversity or beamforming.

That is, the configuration method of the fifth MPDCCH set and the sixth MPDCCH set is the same as that of the first MPDCCH set and the second MPDCCH set described above (the time resources and frequency resources in the fifth MPDCCH set can be the same as the first MPDCCH set). The same or a part is the same, the time resource and the frequency resource in the sixth MPDCCH set may be the same or partly the same as the second MPDCCH set, and can be actually configured by the base station according to requirements), and will not be described again.

FIG. 8 is a flowchart of another random access method of the MTC system according to the embodiment shown in FIG. 1. As shown in FIG. 8, after sending a scheduling transmission message to the base station as described in step S54, the retransmission is used. After receiving the configured physical downlink channel resource, receiving the physical downlink channel message including the contention resolution message sent by the base station may include the following steps.

In step S541, a scheduling transmission message is sent to the base station according to the second scheduling information.

After parsing the first MPDSCH message, the user equipment can obtain Msg2 and obtain the second scheduling information from Msg2, so as to know the resource information of the MPUSCH used to carry Msg3 and the modulation mode of MPUSCH indicated by the base station. Use the resource information of the MPUSCH and send Msg3 to the base station according to the modulation mode.

In step S542, the second downlink MPDCCH message sent by the base station is received by using the reconfigured physical downlink channel resources, and the second MPDCCH message includes third scheduling information of the contention resolution message.

The third scheduling information may include the contention resolution message, that is, the resource information of the MPDSCH carrying Msg4, and the modulation mode when the base station sends the MPDSCH message carrying Msg4. In order that the user equipment obtains the third scheduling information after parsing the second MPDCCH message, thereby knowing the resource information of the MPDSCH carrying the Msg4 and the modulation method, the user equipment can know how to receive the second MPDSCH message in step S542.

In step S542, a second MPDSCH message sent by the base station is received according to the third scheduling information, and the second MPDSCH message includes the contention resolution message.

Wherein, if the random access procedure uses the first implementation scheme in this embodiment, steps S542-S543 may include:

When the user equipment is the first capable user, the second MPDCCH message sent by the base station is received by using the MPDCCH resources in the third MPDCCH set, the second MPDCCH message is the first type MPDCCH message, and the second MPDCCH message includes contention The third scheduling information of the message is resolved.

Receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is a first type MPDSCH message, and the second MPDSCH message includes the contention resolution message.

or,

When the user equipment is a second-capable user, use the MPDCCH resources in the fourth MPDCCH set to receive a second MPDCCH message sent by the base station. The second MPDCCH message is a second type MPDCCH message, as described in the second MPDCCH message. Third scheduling information.

Receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is a second type MPDSCH message, and the second MPDSCH message includes the contention resolution message.

If the random access procedure uses the second implementation scheme in this embodiment, steps S542-S543 may include:

When the user equipment is the first capable user, the second MPDCCH message sent by the base station is received by using the MPDCCH resources in the fourth MPDCCH set, the second MPDCCH message is the first type MPDCCH message, and the second MPDCCH message includes contention The third scheduling information of the message is resolved.

or,

When the user equipment is a second-capable user, use the MPDCCH resources in the sixth MPDCCH set to receive a second MPDCCH message sent by the base station, where the second MPDCCH message is a second type MPDCCH message, as described in the second MPDCCH message Third scheduling information.

In the above technical solution, the base station sends a system broadcast message for indicating random access resources of the first capability user and the second capability user. The first capability user does not support physical use of the LTE control channel region of the subframe for physical For downlink channel transmission, the second capability user supports physical downlink channel transmission using the LTE control channel area of the subframe; when the base station receives the random access preamble sent by the user equipment, the base station uses the Random access channel resources to determine whether the user type of the user equipment is the first-capacity user or the second-capacity user; and then the base station sends a physical downlink channel message to the user equipment including a random access response and reconfiguration information of the physical downlink channel, The reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the physical downlink channel resource after reconfiguration is determined by the base station according to a user type; the base station uses the reconfiguration after receiving the scheduling transmission message sent by the user equipment Subsequent physical downlink channel resources to send packets to the user equipment Contention resolution message of a downlink physical channel message. In this disclosure, different random access resources are configured for user equipment with different capabilities, and a mechanism for sending different types of physical downlink channel messages for different user capabilities in a random access process is provided, which can be applied to the previous release version. User equipment, which can improve the backward compatibility of independently deployed MTC systems.

Fig. 9 is a block diagram of a random access device of an MTC system according to an exemplary embodiment of the present disclosure, which is applied to a base station. As shown in Fig. 9, the device 900 may include:

The broadcast module 901 is configured to send a system broadcast message, the broadcast message is used to indicate a random access resource of a first-capability user and a second-capability user. The first-capability user does not support physical use of the LTE control channel region of a subframe. Downlink channel transmission, the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

The user identification module 902 is configured to, upon receiving a random access preamble sent by the user equipment, determine a user type of the user equipment according to a random access channel resource used when the user equipment sends the random access preamble, and the user The type includes the first capability user or the second capability user;

The sending module 903 is configured to send a physical downlink channel message including a random access response and reconfiguration information of the physical downlink channel to the user equipment, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the reconfiguration The subsequent physical downlink channel resources are determined according to the user type;

The sending module 903 is further configured to send the physical downlink channel message including the contention resolution message to the user equipment by using the reconfigured physical downlink channel resource after receiving the scheduled transmission message sent by the user equipment.

Optionally, the random access resource includes a first random access channel resource set for the first capability user to send the random access preamble, and a first random access channel resource set for the second capability user to send the random access preamble. Two random access channel resource sets. The user identification module is configured to:

Upon receiving the random access preamble, determining whether the random access channel resource used by the user equipment when sending the random access preamble belongs to the first random access channel resource set or the second random access channel resource set;

When belonging to the second random access channel resource set, it is determined that the user equipment is the second capable user.

FIG. 10 is a block diagram of a sending module according to the embodiment shown in FIG. 9. As shown in FIG. 10, the sending module 903 may include:

A first sending submodule 9031, configured to send a first MTC physical downlink control channel MPDCCH message to the user equipment, where the first MPDCCH message includes first scheduling information of the random access response;

The second sending submodule 9032 is configured to send the first MTC physical downlink shared channel MPDSCH message to the user equipment. The first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes The second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.

Optionally, in the first implementation solution of this embodiment, the random access resource includes a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is used to schedule the random for the first capable user. An access response MPDCCH resource set. The second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second capable user. The first sending sub-module 9031 is configured to:

When the user equipment is the first capable user, use the MPDCCH resources in the first MPDCCH set to send the first MPDCCH message to the user equipment, where the first MPDCCH message is a first type MPDCCH message;

When the user equipment is the second capable user, use the MPDCCH resource in the second MPDCCH set to send the first MPDCCH message to the user equipment, where the first MPDCCH message is a second type MPDCCH message;

Optionally, the second sending sub-module 9032 is configured to:

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a third MPDCCH set, where the third MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user and scheduling subsequent data transmission. MPDCCH resource set;

Send the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the random access response Second scheduling information, where the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third MPDCCH set;

or,

When the user equipment is the second capable user, perform MPDCCH resource reconfiguration to obtain a fourth MPDCCH set, where the fourth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capable user and scheduling subsequent data transmission. MPDCCH resource set;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a second type MPDSCH message, the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the random access response Second scheduling information, where the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth MPDCCH set;

Optionally, in a second implementation solution of this embodiment, the first sending submodule 9031 is configured to:

When the user equipment is the first capable user or the second capable user, sending the first MPDCCH message to the user equipment, where the first MPDCCH message is the first type MPDCCH message;

Optionally, the second sending sub-module 9032 is configured to:

When the user equipment is the first-capable user, perform MPDCCH resource reconfiguration to obtain a first re-configured MPDCCH set, where the first MPDCCH set is an MPDCCH for sending a first-type MPDCCH message to the first-capable user. set;

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a fifth MPDCCH set, where the fifth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user and scheduling subsequent data transmission. MPDCCH resource set;

When the user equipment is the second capability user, perform MPDCCH resource reconfiguration to obtain a sixth MPDCCH set, where the sixth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capability user and scheduling subsequent data transmissions. MPDCCH resource set;

Send the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type of MPDSCH message, the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the random access response Second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fifth MPDCCH set; when the user equipment is the second capable user, the The reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the sixth MPDCCH set;

The first time resource is the same as the second time resource, and the first frequency resource is different from the second frequency resource; or

The first time resource is different from the second time resource, and the first frequency resource is the same as the second frequency resource;

The first MPDCCH set and the second MPDCCH set are transmitted in a same or different manner, and the transmission manner includes: transmit diversity or beamforming.

Optionally, FIG. 11 is a block diagram of another sending module according to the embodiment shown in FIG. 9. As shown in FIG. 11, the sending module 903 may include:

The reconfiguration submodule 9033 is configured to send a second MPDCCH message to the user equipment by using the MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set when the user equipment is a first-capable user. The message is the first type of MPDCCH message, and the second MPDCCH message includes third scheduling information of the contention resolution message;

A third sending submodule 9034, sending a second MPDSCH message to the user equipment, where the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

The reconfiguration submodule 9033 is configured to send a second MPDCCH message to the user equipment by using the MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set when the user equipment is a second-capable user. The message is a second type of MPDCCH message, and the second MPDCCH message includes contention for the third scheduling information;

The third sending sub-module 9034 is configured to send a second MPDSCH message to the user equipment. The second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message includes the contention resolution message.

Fig. 12 is a block diagram of another random access apparatus of an MTC system according to an exemplary embodiment of the present disclosure, which is applied to user equipment. As shown in Fig. 12, the apparatus 1200 may include:

The obtaining module 1201 is configured to obtain random access resources of a first-capability user and a second-capability user by receiving a system broadcast message sent by a base station, and the first-capability user does not support physical downlink using the LTE control channel region of a subframe. Channel transmission, the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

The sending module 1202 is configured to use a random access resource corresponding to a user type of the user equipment to send a random access preamble to the base station, where the user type includes the first-capable user or the second-capable user;

The receiving module 1203 is configured to receive a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the reconfiguration The subsequent physical downlink channel resources are determined according to the user type;

The receiving module 1203 is further configured to receive the physical downlink channel message including the contention resolution message sent by the base station by using the reconfigured physical downlink channel resource after sending the scheduling transmission message to the base station.

Optionally, the random access resource includes a first random access channel resource set for the first capability user to send the random access preamble, and a first random access channel resource set for the second capability user to send the random access preamble. Two random access channel resource sets, the sending module 1202, are configured to:

When the user equipment is the first capable user, use the random access channel resource in the first random access channel resource set to send the random access preamble to the base station;

When the user equipment is the second capable user, the random access channel resource in the second random access channel resource set is used to send the random access preamble to the base station.

FIG. 13 is a block diagram of a receiving module according to the embodiment shown in FIG. 12. As shown in FIG. 13, the receiving module 1203 includes:

A first receiving sub-module 12031 configured to receive a first MTC physical downlink control channel MPDCCH message sent by the base station, where the first MPDCCH message includes first scheduling information of the random access response;

A second receiving sub-module 12032 configured to receive a first MTC physical downlink shared channel MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, The random access response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.

Optionally, in the first implementation solution of this embodiment, the random access resource includes a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is used to schedule the random for the first capable user. An access response MPDCCH resource set. The second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second capable user. The first receiving sub-module 12031 is configured to:

When the user equipment is the first capable user, use the MPDCCH resources in the first MPDCCH set to receive the first MPDCCH message sent by the base station, where the first MPDCCH message is a first type MPDCCH message;

When the user equipment is the second capable user, use the MPDCCH resource in the second MPDCCH set to receive the first MPDCCH message sent by the base station, where the first MPDCCH message is a second type MPDCCH message;

Optionally, the second receiving sub-module 12032 is configured to:

When the user equipment is the first capable user, receive the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random Access response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a third MPDCCH set, and the third MPDCCH set is used for Scheduling the resource set of the MPDCCH of the contention resolution message and the MPDCCH of subsequent data transmission to the first-capable user;

When the user equipment is the second capable user, receive the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a second type MPDSCH message, and the first MPDSCH message includes the random Access response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fourth MPDCCH set, and the fourth MPDCCH set is used for Scheduling the resource set of the MPDCCH of the contention resolution message and the MPDCCH of subsequent data transmission to the second-capable user;

Optionally, in a second implementation solution of this embodiment, the first receiving submodule 12031 is configured to:

When the user equipment is the first capable user or the second capable user, receive the first MPDCCH message sent by the base station, where the first MPDCCH message is the first type MPDCCH message;

Optionally, the second receiving submodule 12032 is configured to receive the first MPDSCH message sent by the base station, the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access Response and MPDCCH reconfiguration information, the random access response includes the second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fifth MPDCCH Set, when the user equipment is the second capability user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a sixth reconfigured MPDCCH set, and the fifth MPDCCH set is used to give the first capability The user schedules the MPDCCH resource set for the contention resolution message and the MPDCCH resource set for scheduling subsequent data transmissions, and the sixth MPDCCH set is a resource set for scheduling the MPDCCH contention message and the MPDCCH for subsequent data transmissions for the second capability user. ;

Optionally, the sending module 1202 is further configured to: send a scheduling transmission message to the base station according to the second scheduling information;

FIG. 14 is a block diagram of another sending module according to the embodiment shown in FIG. 12. As shown in FIG. 14, the receiving module 1203 may include:

The third receiving submodule 12033 is configured to receive a second MPDCCH message sent by the base station by using the MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set when the user equipment is a first-capable user, and the second MPDCCH The message is the first type of MPDCCH message, and the second MPDCCH message includes third scheduling information of the contention resolution message;

A fourth receiving sub-module 12034 is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes the contention resolution message ;

or,

The third receiving sub-module 12033 is configured to receive a second MPDCCH message sent by the base station by using the MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set when the user equipment is a second-capable user. The two MPDCCH messages are the second type MPDCCH message, and the third scheduling information in the second MPDCCH message;

The fourth receiving submodule 12034 is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message includes the contention resolution Message.

In the above technical solution, the base station sends a system broadcast message for indicating random access resources of the first capability user and the second capability user. The first capability user does not support physical use of the LTE control channel region of the subframe for physical For downlink channel transmission, the second capability user supports physical downlink channel transmission using the LTE control channel area of the subframe; when the base station receives the random access preamble sent by the user equipment, the base station uses the Random access channel resources to determine whether the user type of the user equipment is the first-capacity user or the second-capacity user; and then the base station sends a physical downlink channel message to the user equipment including a random access response and reconfiguration information of the physical downlink channel, The reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the physical downlink channel resource after reconfiguration is determined by the base station according to a user type; the base station uses the reconfiguration after receiving the scheduling transmission message sent by the user equipment Subsequent physical downlink channel resources to send packets to the user equipment A physical downlink channel message containing a contention resolution message. In this disclosure, different random access resources are configured for user equipment with different capabilities, and a mechanism for sending different types of physical downlink channel messages for different user capabilities in a random access process is provided, which can be applied to the previous release User equipment, which can improve the backward compatibility of independently deployed MTC systems.

Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

The present disclosure also provides a computer-readable storage medium on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the random access method of the MTC system provided by the present disclosure are implemented.

Fig. 15 is a block diagram illustrating another random access device of an MTC system according to an exemplary embodiment. For example, the apparatus 1500 may be a user equipment such as a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness equipment, a personal digital assistant, and the like.

Referring to FIG. 15, the device 1500 may include one or more of the following components: a processing component 1502, a memory 1504, a power component 1506, a multimedia component 1508, an audio component 1510, an input / output (I / O) interface 1512, a sensor component 1514, And communication component 1516.

The processing component 1502 generally controls the overall operation of the device 1500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1502 may include one or more processors 1520 to execute instructions to complete all or part of the steps of the random access method of the MTC system described above. In addition, the processing component 1502 may include one or more modules to facilitate the interaction between the processing component 1502 and other components. For example, the processing component 1502 may include a multimedia module to facilitate the interaction between the multimedia component 1508 and the processing component 1502.

The memory 1504 is configured to store various types of data to support operation at the device 1500. Examples of these data include instructions for any application or method operating on the device 1500, contact data, phone book data, messages, pictures, videos, and the like. The memory 1504 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), Programming read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

The power component 1506 provides power to various components of the device 1500. The power component 1506 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 1500.

The multimedia component 1508 includes a screen that provides an output interface between the device 1500 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or slide action, but also detect duration and pressure related to the touch or slide operation. In some embodiments, the multimedia component 1508 includes a front camera and / or a rear camera. When the device 1500 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 1510 is configured to output and / or input audio signals. For example, the audio component 1510 includes a microphone (MIC) that is configured to receive an external audio signal when the device 1500 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may be further stored in the memory 1504 or transmitted via the communication component 1516. In some embodiments, the audio component 1510 further includes a speaker for outputting audio signals.

The I / O interface 1512 provides an interface between the processing component 1502 and a peripheral interface module. The peripheral interface module may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 1514 includes one or more sensors for providing status evaluation of various aspects of the device 1500. For example, the sensor component 1514 can detect the on / off state of the device 1500 and the relative positioning of the components, such as the display and keypad of the device 1500. The sensor component 1514 can also detect the change in the position of the device 1500 or a component of the device 1500 , The presence or absence of the user's contact with the device 1500, the orientation or acceleration / deceleration of the device 1500, and the temperature change of the device 1500. The sensor assembly 1514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 1514 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 1514 may further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1516 is configured to facilitate wired or wireless communication between the device 1500 and other devices. The device 1500 may access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 1516 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1516 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the device 1500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable It is implemented by a gate array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components, and is used to perform the random access method of the MTC system.

In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory 1504 including instructions, may be executed by the processor 1520 of the device 1500 to complete the random access of the MTC system. method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Fig. 16 is a block diagram illustrating still another random access method of an MTC system according to an exemplary embodiment. For example, the device 1600 may be provided as a server or a base station. 16, the device 1600 includes a processing component 1622, which further includes one or more processors, and a memory resource represented by a memory 1632, for storing instructions executable by the processing component 1622, such as an application program. The application program stored in the memory 1632 may include one or more modules each corresponding to a set of instructions. In addition, the processing component 1622 is configured to execute instructions to perform the random access method of the MTC system described above.

The device 1600 may also include a power supply component 1626 configured to perform power management of the device 1600, a wired or wireless network interface 1650 configured to connect the device 1600 to a network, and an input / output (I / O) interface 1658. The device 1600 can operate based on an operating system stored in the memory 1632, such as Windows ServerTM, Mac OSXTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

Those skilled in the art will readily think of other embodiments of the present disclosure after considering the specification and practicing the present disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that conform to the general principles of this disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed by this disclosure. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It should be understood that the present disclosure is not limited to the precise structure that has been described above and illustrated in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the disclosure is limited only by the following claims.

Claims

A random access method for an MTC system, which is characterized in that it is applied to a base station, and the method includes:

Send a system broadcast message, which is used to indicate the random access resources of the first capability user and the second capability user. The first capability user does not support physical downlink channel transmission using the LTE control channel region of the subframe. The second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

Upon receiving the random access preamble sent by the user equipment, determining a user type of the user equipment according to a random access channel resource used when the user equipment sends the random access preamble, the user type including the user equipment The first capability user or the second capability user;

Sending to the user equipment a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the physical downlink channel after reconfiguration The channel resource is determined according to the user type;

After receiving the scheduling transmission message sent by the user equipment, the physical downlink channel resource including the contention resolution message is sent to the user equipment by using the reconfigured physical downlink channel resource.
The method according to claim 1, wherein the random access resource comprises: a first random access channel resource set for the first capable user to send the random access preamble, and used for all The second capability user sends the second random access channel resource set of the random access preamble, and when the random access preamble sent by the user equipment is received, the random access preamble is sent according to the user equipment Determining the user type of the user equipment by using a random access channel resource includes:

When receiving the random access preamble, determine whether the random access channel resource used by the user equipment when sending the random access preamble belongs to the first random access channel resource set or the second random access Channel resource set;

When belonging to the first random access channel resource set, determining that the user equipment is the first capable user;

When belonging to the second random access channel resource set, determining that the user equipment is the second capable user.
The method according to claim 2, wherein the first random access channel resource set and the second random access channel resource set each include: time resources, frequency resources, and random access preamble resources;

The first random access channel resource set is different from at least one resource in the second random access channel resource set.
The method according to claim 1, wherein the sending to the user equipment a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, wherein the reconfiguration information is used to indicate reconfiguration Subsequent physical downlink channel resources, and the reconfigured physical downlink channel resources are determined according to the user type, including:

Sending a first MTC physical downlink control channel MPDCCH message to the user equipment, where the first MPDCCH message includes first scheduling information of the random access response;

Send a first MTC physical downlink shared channel MPDSCH message to the user equipment, the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response includes the scheduled transmission message The second scheduling information, the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.
The method according to claim 4, wherein the random access resources include: a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is used to schedule the first capable user for the user. A random access response MPDCCH resource set, the second MPDCCH set is an MPDCCH resource set for scheduling the random access response to the second capable user, and sending the first MPDCCH message to the user equipment, include:

When the user equipment is the first capable user, use the MPDCCH resource in the first MPDCCH set to send the first MPDCCH message to the user equipment, where the first MPDCCH message is a first type MPDCCH message ;

When the user equipment is the second capable user, use the MPDCCH resource in the second MPDCCH set to send the first MPDCCH message to the user equipment, where the first MPDCCH message is a second type MPDCCH message ;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.
The method according to claim 5, wherein the first MPDSCH message is sent to the user equipment, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type, and includes:

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a third MPDCCH set, where the third MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user. And MPDCCH resource set for scheduling subsequent data transmission;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third MPDCCH set;

or,

When the user equipment is the second capable user, perform MPDCCH resource reconfiguration to obtain a fourth MPDCCH set, where the fourth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capable user. And MPDCCH resource set for scheduling subsequent data transmission;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a second type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth MPDCCH set;

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.
The method according to claim 4, wherein the sending a first MPDCCH message to the user equipment comprises:

When the user equipment is the first capable user or the second capable user, send the first MPDCCH message to the user equipment, where the first MPDCCH message is a first type MPDCCH message;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.
The method according to claim 7, wherein the first MPDSCH message is sent to the user equipment, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type, and includes:

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a fifth MPDCCH set, where the fifth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user. And MPDCCH resource set for scheduling subsequent data transmission;

When the user equipment is the second capable user, perform MPDCCH resource reconfiguration to obtain a sixth MPDCCH set, where the sixth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capable user. And MPDCCH resource set for scheduling subsequent data transmission;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fifth MPDCCH set. When the user equipment is the second capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the sixth MPDCCH set;

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.
The method according to claim 5, wherein the first MPDCCH set occupies a first time resource and a first frequency resource, and the second MPDCCH set occupies a second time resource and a second frequency resource;

The first time resource is different from the second time resource, and the first frequency resource is different from the second frequency resource; or

The first time resource and the second time resource are the same, and the first frequency resource and the second frequency resource are different; or

The first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are the same;

Resource mapping modes of the first MPDCCH set and the second MPDCCH set are the same or different, and the resource mapping modes include decentralized mapping or centralized mapping;

The first MPDCCH set and the second MPDCCH set are transmitted in the same or different manners, and the transmission manners include: transmit diversity or beamforming.
The method according to claim 6 or 8, wherein after receiving the scheduling transmission message sent by the user equipment, using the reconfigured physical downlink channel resource to send a contention resolution message to the user equipment. Physical downlink channel messages, including:

When the user equipment is a first-capable user, send a second MPDCCH message to the user equipment by using the MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set, and the second MPDCCH message is the A first type of MPDCCH message, and the second MPDCCH message includes third scheduling information of a contention resolution message;

Send a second MPDSCH message to the user equipment, where the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

When the user equipment is a second-capable user, use a MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set to send a second MPDCCH message to the user equipment, where the second MPDCCH message is a second type of MPDCCH Message, the second MPDCCH message includes contention for the third scheduling information;

Send a second MPDSCH message to the user equipment, where the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message includes the contention resolution message.
A random access method for an MTC system, which is characterized in that the method is applied to user equipment, and the method includes:

The random access resources of the first capability user and the second capability user are obtained by receiving a system broadcast message sent by the base station. The first capability user does not support physical downlink channel transmission using the LTE control channel region of the subframe. Second-capacity users support physical downlink channel transmission using the LTE control channel area of the subframe;

Sending a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment, where the user type includes the first capable user or the second capable user;

Receiving a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the physical downlink channel after reconfiguration The channel resource is determined according to the user type;

After sending a scheduling transmission message to the base station, use the reconfigured physical downlink channel resource to receive a physical downlink channel message including a contention resolution message sent by the base station.
The method according to claim 11, wherein the random access resource comprises: a first random access channel resource set for the first capable user to send the random access preamble, and used for all The second capability user sends a second random access channel resource set of the random access preamble, and the random access resource corresponding to the user type of the user equipment is used to send the random access preamble to the base station, include:

When the user equipment is the first capable user, sending the random access preamble to the base station by using a random access channel resource in the first random access channel resource set;

When the user equipment is the second capable user, use the random access channel resource in the second random access channel resource set to send the random access preamble to the base station.
The method according to claim 12, wherein the first random access channel resource set and the second random access channel resource set each include: time resources, frequency resources, and random access preamble resources;

The first random access channel resource set is different from at least one resource in the second random access channel resource set.
The method according to claim 11, wherein the receiving receives a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station, and the reconfiguration information is used to indicate reconfiguration Subsequent physical downlink channel resources, and the reconfigured physical downlink channel resources are determined according to the user type, including:

Receiving a first MTC physical downlink control channel MPDCCH message sent by the base station, where the first MPDCCH message includes first scheduling information of the random access response;

Receiving a first MTC physical downlink shared channel MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access response The second scheduling information of the scheduling transmission message is included, the reconfiguration information is used to indicate the reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.
The method according to claim 14, wherein the random access resources include: a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is used to schedule the first capable user for the user. A random access response MPDCCH resource set, the second MPDCCH set is an MPDCCH resource set for scheduling the random access response to the second capable user, and receiving a first MPDCCH message sent by the base station, include:

When the user equipment is the first capable user, use the MPDCCH resource in the first MPDCCH set to receive the first MPDCCH message sent by the base station, and the first MPDCCH message is a first type MPDCCH message ;

When the user equipment is the second capable user, use the MPDCCH resource in the second MPDCCH set to receive the first MPDCCH message sent by the base station, where the first MPDCCH message is a second type of MPDCCH message ;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.
The method according to claim 15, wherein the first MPDSCH message sent by the base station is received according to the first scheduling information, and the first MPDSCH message includes the random access response and the MPDCCH Reconfiguration information, the random access response includes second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is based on the reconfiguration Determined by user type, including:

When the user equipment is the first capable user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a first type MPDSCH message, and the first An MPDSCH message includes the random access response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third An MPDCCH set, where the third MPDCCH set is a resource set for scheduling the MPDCCH of the contention resolution message and an MPDCCH scheduling subsequent data transmission for the first capable user;

When the user equipment is the second capable user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a second type MPDSCH message, and the first An MPDSCH message includes the random access response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth An MPDCCH set, where the fourth MPDCCH set is a resource set for scheduling the MPDCCH of the contention resolution message and scheduling of subsequent data transmission for the second capable user;

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.
The method according to claim 14, wherein the receiving the first MPDCCH message sent by the base station comprises:

When the user equipment is the first capable user or the second capable user, receive the first MPDCCH message sent by the base station, and the first MPDCCH message is a first type MPDCCH message;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.
The method according to claim 17, wherein the first MPDSCH message sent by the base station is received according to the first scheduling information, and the first MPDSCH message includes the random access response and the MPDCCH Reconfiguration information, the random access response includes second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is based on the reconfiguration Determined by user type, including:

Receiving the first MPDSCH message sent by the base station, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fifth MPDCCH set, and when the user When the device is the second capability user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a sixth MPDCCH set after reconfiguration, and the fifth MPDCCH set is used to give the first capability user A resource set that schedules the MPDCCH for the contention resolution message and an MPDCCH that schedules subsequent data transmissions, and the sixth MPDCCH set is an MPDCCH that is used to schedule the contention resolution message for the second capability user and an MPDCCH that schedules subsequent data transmissions Resource collection

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.
The method according to claim 15, wherein the first MPDCCH set occupies a first time resource and a first frequency resource, and the second MPDCCH set occupies a second time resource and a second frequency resource;

The first time resource is different from the second time resource, and the first frequency resource is different from the second frequency resource; or

The first time resource and the second time resource are the same, and the first frequency resource and the second frequency resource are different; or

The first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are the same;

Resource mapping modes of the first MPDCCH set and the second MPDCCH set are the same or different, and the resource mapping modes include decentralized mapping or centralized mapping;

The first MPDCCH set and the second MPDCCH set are transmitted in the same or different manners, and the transmission manners include: transmit diversity or beamforming.
The method according to claim 16 or 18, wherein after sending a scheduling transmission message to the base station, using the reconfigured physical downlink channel resource to receive a Physical downlink channel message.

Sending a scheduling transmission message to the base station according to the second scheduling information;

When the user equipment is a first-capable user, use a MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set to receive a second MPDCCH message sent by the base station, where the second MPDCCH message is the first An MPDCCH-like message, where the second MPDCCH message includes third scheduling information of a contention resolution message;

Receiving a second MPDSCH message sent by the base station according to the third scheduling information, where the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

When the user equipment is a second-capable user, use a MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set to receive a second MPDCCH message sent by the base station, where the second MPDCCH message is the A second type of MPDCCH message, and the third scheduling information in the second MPDCCH message;

Receiving a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message includes the contention resolution message.
A random access device for an MTC system, which is characterized in being applied to a base station, and the device includes:

The broadcast module is configured to send a system broadcast message, the broadcast message is used to indicate random access resources of the first-capability user and the second-capability user, and the first-capability user does not support using the LTE control channel region of the subframe Physical downlink channel transmission, the second capability user supports physical downlink channel transmission by using an LTE control channel region of a subframe;

A user identification module configured to determine a user type of the user equipment according to a random access channel resource used when the user equipment sends the random access preamble when the random access preamble sent by the user equipment is received, The user type includes the first capable user or the second capable user;

A sending module configured to send a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel to the user equipment, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, The physical downlink channel resources after reconfiguration are determined according to the user type;

The sending module is further configured to send a physical downlink channel message including a contention resolution message to the user equipment by using the reconfigured physical downlink channel resource after receiving the scheduled transmission message sent by the user equipment.
The apparatus according to claim 21, wherein the random access resource comprises: a first random access channel resource set for the first capable user to send the random access preamble, and used for all The second capability user sends the second random access channel resource set of the random access preamble, and the user identification module is configured to:

When receiving the random access preamble, determine whether the random access channel resource used by the user equipment when sending the random access preamble belongs to the first random access channel resource set or the second random access Channel resource set;

When belonging to the first random access channel resource set, determining that the user equipment is the first capable user;

When belonging to the second random access channel resource set, determining that the user equipment is the second capable user.
The apparatus according to claim 22, wherein the first random access channel resource set and the second random access channel resource set each include: time resources, frequency resources, and random access preamble resources;

The first random access channel resource set is different from at least one resource in the second random access channel resource set.
The apparatus according to claim 21, wherein the sending module comprises:

A first sending submodule configured to send a first MTC physical downlink control channel MPDCCH message to the user equipment, where the first MPDCCH message includes first scheduling information of the random access response;

A second sending submodule is configured to send a first MTC physical downlink shared channel MPDSCH message to the user equipment, where the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random access The response includes second scheduling information of the scheduling transmission message, and the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is determined according to the user type.
The apparatus according to claim 24, wherein the random access resources include a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is used to schedule the first capable user for the user. A random access response MPDCCH resource set, the second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second capable user, and the first sending submodule is configured to:

When the user equipment is the first capable user, use the MPDCCH resource in the first MPDCCH set to send the first MPDCCH message to the user equipment, where the first MPDCCH message is a first type MPDCCH message ;

When the user equipment is the second capable user, use the MPDCCH resource in the second MPDCCH set to send the first MPDCCH message to the user equipment, where the first MPDCCH message is a second type MPDCCH message ;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.
The apparatus according to claim 25, wherein the second sending sub-module is configured to:

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a third MPDCCH set, where the third MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user. And MPDCCH resource set for scheduling subsequent data transmission;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third MPDCCH set;

or,

When the user equipment is the second capable user, perform MPDCCH resource reconfiguration to obtain a fourth MPDCCH set, where the fourth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capable user. And MPDCCH resource set for scheduling subsequent data transmission;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a second type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth MPDCCH set;

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.
The apparatus according to claim 24, wherein the first sending sub-module is configured to:

When the user equipment is the first capable user or the second capable user, send the first MPDCCH message to the user equipment, and the first MPDCCH message is the first type MPDCCH message ;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.
The apparatus according to claim 27, wherein the second sending sub-module is configured to:

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a first reconfigured MPDCCH set, where the first MPDCCH set is used to send the first type to the first capable user MPDCCH set of MPDCCH messages;

When the user equipment is the first capable user, perform MPDCCH resource reconfiguration to obtain a fifth MPDCCH set, where the fifth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the first capable user. And MPDCCH resource set for scheduling subsequent data transmission;

When the user equipment is the second capable user, perform MPDCCH resource reconfiguration to obtain a sixth MPDCCH set, where the sixth MPDCCH set is an MPDCCH for scheduling the contention resolution message for the second capable user. And MPDCCH resource set for scheduling subsequent data transmission;

Sending the first MPDSCH message to the user equipment, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fifth MPDCCH set. When the user equipment is the second capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the sixth MPDCCH set;

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.
The apparatus according to claim 25, wherein the first MPDCCH set occupies a first time resource and a first frequency resource, and the second MPDCCH set occupies a second time resource and a second frequency resource;

The first time resource is different from the second time resource, and the first frequency resource is different from the second frequency resource; or

The first time resource and the second time resource are the same, and the first frequency resource and the second frequency resource are different; or

The first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are the same;

Resource mapping modes of the first MPDCCH set and the second MPDCCH set are the same or different, and the resource mapping modes include decentralized mapping or centralized mapping;

The first MPDCCH set and the second MPDCCH set are transmitted in the same or different manners, and the transmission manners include: transmit diversity or beamforming.
The apparatus according to claim 26 or 28, wherein the sending module comprises:

The reconfiguration submodule is configured to send a second MPDCCH message to the user equipment by using the MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set when the user equipment is a first-capable user. The second MPDCCH message is the first type of MPDCCH message, and the second MPDCCH message includes third scheduling information of a contention resolution message;

A third sending submodule, sending a second MPDSCH message to the user equipment, where the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes the contention resolution message;

or,

The reconfiguration sub-module is configured to send a second MPDCCH message to the user equipment by using the MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set when the user equipment is a second-capable user. The second MPDCCH message is a second type of MPDCCH message, and the second MPDCCH message includes contention for the third scheduling information;

The third sending submodule is configured to send a second MPDSCH message to the user equipment, the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message includes the contention resolution message .
A random access device of an MTC system, which is characterized in that it is applied to user equipment, and the method includes:

An acquisition module configured to receive random access resources of a first-capability user and a second-capability user by receiving a system broadcast message sent by a base station, the first-capability user does not support physical downlink using a sub-frame LTE control channel region Channel transmission, the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

A sending module configured to send a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment, the user type including the first capable user or the second capable user ;

A receiving module configured to receive a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, The physical downlink channel resources after reconfiguration are determined according to the user type;

The receiving module is further configured to receive the physical downlink channel message including the contention resolution message sent by the base station by using the reconfigured physical downlink channel resource after sending the scheduling transmission message to the base station.
The apparatus according to claim 31, wherein the random access resource comprises: a first random access channel resource set for the first capable user to send the random access preamble, and used for all The second capability user sends the second random access channel resource set of the random access preamble, and the sending module is configured to:

When the user equipment is the first capable user, sending the random access preamble to the base station by using a random access channel resource in the first random access channel resource set;

When the user equipment is the second capable user, use the random access channel resource in the second random access channel resource set to send the random access preamble to the base station.
The apparatus according to claim 32, wherein the first random access channel resource set and the second random access channel resource set each include: time resources, frequency resources, and random access preamble resources;

The first random access channel resource set is different from at least one resource in the second random access channel resource set.
The apparatus according to claim 31, wherein the receiving module comprises:

A first receiving submodule configured to receive a first MTC physical downlink control channel MPDCCH message sent by the base station, where the first MPDCCH message includes first scheduling information of the random access response;

The second receiving submodule is configured to receive a first MTC physical downlink shared channel MPDSCH message sent by the base station according to the first scheduling information, where the first MPDSCH message includes the random access response and the MPDCCH retransmission. Configuration information, the random access response includes second scheduling information of the scheduling transmission message, the reconfiguration information is used to indicate a reconfigured MPDCCH resource, and the reconfigured MPDCCH resource is based on the user OK.
The apparatus according to claim 34, wherein the random access resources include a first MPDCCH set and a second MPDCCH set, and the first MPDCCH set is used to schedule the first capable user for the user. A random access response MPDCCH resource set, the second MPDCCH set is an MPDCCH resource set for scheduling the random access response for the second capable user, and the first receiving submodule is configured to:

When the user equipment is the first capable user, use the MPDCCH resource in the first MPDCCH set to receive the first MPDCCH message sent by the base station, and the first MPDCCH message is a first type MPDCCH message ;

When the user equipment is the second capable user, use the MPDCCH resource in the second MPDCCH set to receive the first MPDCCH message sent by the base station, where the first MPDCCH message is a second type of MPDCCH message ;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.
The apparatus according to claim 35, wherein the second receiving sub-module is configured to:

When the user equipment is the first capable user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a first type MPDSCH message, and the first An MPDSCH message includes the random access response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the third An MPDCCH set, where the third MPDCCH set is a resource set for scheduling the MPDCCH of the contention resolution message and an MPDCCH scheduling subsequent data transmission for the first capable user;

When the user equipment is the second capable user, receiving the first MPDSCH message sent by the base station according to the first scheduling information, the first MPDSCH message is a second type MPDSCH message, and the first An MPDSCH message includes the random access response and MPDCCH reconfiguration information, the random access response includes the second scheduling information, and the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is the fourth An MPDCCH set, where the fourth MPDCCH set is a resource set for scheduling the MPDCCH of the contention resolution message and scheduling of subsequent data transmission for the second capable user;

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.
The apparatus according to claim 34, wherein the first receiving sub-module is configured to:

When the user equipment is the first capable user or the second capable user, receive the first MPDCCH message sent by the base station, and the first MPDCCH message is the first type MPDCCH message ;

The first type of MPDCCH message is an MPDCCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDCCH message is an MPDCCH message of an LTE control channel region that occupies a subframe.
The apparatus according to claim 37, wherein the second receiving sub-module is configured to:

Receiving the first MPDSCH message sent by the base station, where the first MPDSCH message is a first type MPDSCH message, and the first MPDSCH message includes the random access response and MPDCCH reconfiguration information, and the random The access response includes the second scheduling information; when the user equipment is the first capable user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a fifth MPDCCH set, and when the user When the device is the second capability user, the reconfiguration information is used to indicate that the reconfigured MPDCCH resource is a sixth MPDCCH set after reconfiguration, and the fifth MPDCCH set is used to give the first capability user A resource set that schedules the MPDCCH for the contention resolution message and an MPDCCH that schedules subsequent data transmissions, and the sixth MPDCCH set is an MPDCCH that is used to schedule the contention resolution message for the second capability user and an MPDCCH that schedules subsequent data transmissions Resource collection

The first type of MPDSCH message is an MPDSCH message of an LTE control channel region that does not occupy a subframe, and the second type of MPDSCH message is an MPDSCH message of an LTE control channel region that occupies a subframe.
The apparatus according to claim 35, wherein the first MPDCCH set occupies a first time resource and a first frequency resource, and the second MPDCCH set occupies a second time resource and a second frequency resource;

The first time resource is different from the second time resource, and the first frequency resource is different from the second frequency resource; or

The first time resource and the second time resource are the same, and the first frequency resource and the second frequency resource are different; or

The first time resource and the second time resource are different, and the first frequency resource and the second frequency resource are the same;

Resource mapping modes of the first MPDCCH set and the second MPDCCH set are the same or different, and the resource mapping modes include decentralized mapping or centralized mapping;

The first MPDCCH set and the second MPDCCH set are transmitted in the same or different manners, and the transmission manners include: transmit diversity or beamforming.
The apparatus according to claim 36 or 38, wherein the sending module is further configured to: send a scheduling transmission message to the base station according to the second scheduling information;

The receiving module further includes:

A third receiving submodule, configured to receive a second MPDCCH message sent by the base station by using the MPDCCH resource in the third MPDCCH set or the fifth MPDCCH set when the user equipment is a first-capable user, the A second MPDCCH message is the first type MPDCCH message, and the second MPDCCH message includes third scheduling information of a contention resolution message;

A fourth receiving submodule is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the first type MPDSCH message, and the second MPDSCH message includes The contention resolution message;

or,

The third receiving submodule is configured to receive the second MPDCCH sent by the base station by using the MPDCCH resource in the fourth MPDCCH set or the sixth MPDCCH set when the user equipment is a second-capable user. Message, the second MPDCCH message is the second type of MPDCCH message, and the third scheduling information in the second MPDCCH message;

The fourth receiving sub-module is configured to receive a second MPDSCH message sent by the base station according to the third scheduling information, the second MPDSCH message is the second type MPDSCH message, and the second MPDSCH message The contention resolution message is included.
A random access device of an MTC system, which is characterized in that it is applied to a base station and includes:

processor;

Memory for storing processor-executable instructions;

Wherein, the processor is configured to send a system broadcast message, the broadcast message is used to indicate random access resources of the first capability user and the second capability user, and the first capability user does not support LTE using a subframe The control channel region performs physical downlink channel transmission, and the second capability user supports physical downlink channel transmission using the LTE control channel region of the subframe;

Upon receiving the random access preamble sent by the user equipment, determining a user type of the user equipment according to a random access channel resource used when the user equipment sends the random access preamble, the user type including the user equipment The first capability user or the second capability user;

Sending to the user equipment a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the physical downlink channel after reconfiguration The channel resource is determined according to the user type;

After receiving the scheduling transmission message sent by the user equipment, the physical downlink channel resource including the contention resolution message is sent to the user equipment by using the reconfigured physical downlink channel resource.
A computer-readable storage medium having computer program instructions stored thereon, characterized in that when the computer program instructions are executed by a processor, the steps of the method according to any one of claims 1 to 10 are implemented.
A random access device of an MTC system, which is characterized in that it is applied to user equipment and includes:

processor;

Memory for storing processor-executable instructions;

Wherein, the processor is configured to obtain random access resources of the first capability user and the second capability user by receiving a system broadcast message sent by the base station, and the first capability user does not support the LTE control channel using a subframe. Physical downlink channel transmission in an area, and the second capability user supports physical downlink channel transmission using a sub-frame LTE control channel area;

Sending a random access preamble to the base station by using a random access resource corresponding to a user type of the user equipment, where the user type includes the first capable user or the second capable user;

Receiving a physical downlink channel message including a random access response and reconfiguration information of a physical downlink channel sent by the base station, where the reconfiguration information is used to indicate a physical downlink channel resource after reconfiguration, and the physical downlink channel after reconfiguration The channel resource is determined according to the user type;

After sending a scheduling transmission message to the base station, use the reconfigured physical downlink channel resource to receive a physical downlink channel message including a contention resolution message sent by the base station.
A computer-readable storage medium having computer program instructions stored thereon, characterized in that when the computer program instructions are executed by a processor, the steps of the method according to any one of claims 11 to 20 are implemented.