CN106954278B

CN106954278B - Method for determining random access wireless network temporary identifier, user equipment and base station

Info

Publication number: CN106954278B
Application number: CN201610013863.1A
Authority: CN
Inventors: 邹伟
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-01-07
Filing date: 2016-01-07
Publication date: 2021-09-28
Anticipated expiration: 2036-01-07
Also published as: WO2017118177A1; CN106954278A

Abstract

A method, user equipment and base station for determining random access radio network temporary identifier RA-RNTI, UE obtains information of physical random access channel PRACH distribution sent by the base station through broadcast message, selects PRACH for sending random access preamble; and the UE determines the RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution. The scheme of the application can reduce the number of RA-RNTI values required by the system and save RA-RNTI value resources.

Description

Method for determining random access wireless network temporary identifier, user equipment and base station

Technical Field

The present invention relates to a wireless communication technology, and more particularly, to a method, a user equipment and a base station for determining a Random Access Radio Network Temporary Identity (RA-RNTI).

Background

In a conventional communication system, such as a Long-Term Evolution (LTE) system, different Random Access channels are distinguished by using different Random Access Radio Network Temporary identities (RA-RNTIs). User Equipment (UE) receives a Random Access Response (RAR) in a subsequent Random Access Response window using an RA-RNTI corresponding to a Physical Random Access Channel (PRACH) for transmitting a Random Access preamble. In this process, the RA-RNTI used by the UE is calculated by the following formula:

RA-RNTI＝1+t_id+10*f_id

Wherein, t _ id is the first subframe number (t _ id is more than or equal to 0 and less than 10) of the PRACH for sending the random access preamble, and f _ id is the index (f _ id is more than or equal to 0 and less than 6) of the PRACH for sending the random access preamble in the subframe on the frequency domain. For FDD, there is only one PRACH resource per subframe, so f _ id is fixed to 0. As can be seen, the conventional RA-RNTI calculation method is calculated by using subframe numbers and frequency offset sequence numbers as parameters, and at most supports the identification of PRACH within a 10ms frame range.

In the process of implementing the technical solution of the present application, the inventors of the present application find that, although the conventional RA-RNTI calculation method can completely distinguish all possible PRACH responses that may fall within the same RAR window, the fixed use of the first 70 RA-RNTI values to distinguish all possible PRACH uses of RA-RNTI values is somewhat wasteful. Since only a small number of PRACH deployments may be made in a real system.

In addition, the method for calculating the RA-RNTI value is not suitable for a system with more factors influencing PRACH distribution. With Machine to Machine (Machine to)Machine, hereinafter referred to as M2M) for example. M2M communication is a fifth generation mobile communication technology (5G, 5)^thGeneration) is an important subject of current research, and is also an important application field of future wireless communication. In the M2M topic, aiming at the characteristics of low-cost and low-throughput type terminals, 3GPP proposes a research sub-topic of a narrowband Internet of Things (NB-IoT) system, aiming at constructing a system similar to Long-Term Evolution (LTE) in a frequency band of 200KHz and providing low-throughput wireless communication services for low-cost terminals. The downlink still adopts the Orthogonal Frequency Division Multiple Access (OFDMA) technology, the uplink still adopts the Single-Carrier Frequency Division Multiple Access (SC-FDMA) technology, and the functional modules specified in the existing LTE system are reused or simplified as much as possible. Subcarrier width in addition to the 15KHz subcarrier width used in the LTE system, a 3.75KHz subcarrier width is added in the uplink to further enhance the large coverage support of the uplink.

Currently, related technical standards are being studied within the 3GPP international standardization organization. In the 92 th conference of 3GPP RAN 2: the random access preamble in the NB-IoT system can be single carrier or multi-carrier, and the NB-IoT system also needs to consider different coverage classes to support multiple coverage scenarios. The type of random access channel of the NB-IoT system will be more complex. Especially a random access preamble of a single carrier, the length of which may be relatively long, may reach or even exceed the length of one 10ms frame. Also, in order to support an enhanced coverage scenario, multiple repeated transmissions are required with a Random Access Response (RAR). Therefore, the random access response window in the NB IoT system may be relatively long, even exceeding a frame length of 10 ms.

In NB-IoT systems, with increasing considerations such as different repetition times for multiple coverage, PRACH types (single and multiple subcarriers), etc., a large number of RA-RNTI values may be required with conventional RA-RNTI calculation methods. Taking the number of repetitions 4 and the number of type categories 2 as an example, 560 different RA-RNTI values are required for the conventional method. This design appears to be particularly unsuitable in NB-IoT systems with a large number of UEs.

Disclosure of Invention

In view of the above, the present invention provides the following technical solutions.

A method of determining a random access radio network temporary identity, RA-RNTI, comprising:

user Equipment (UE) acquires information of Physical Random Access Channel (PRACH) distribution through broadcast messages, and selects a PRACH for sending a random access preamble;

and the UE determines the RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution.

A user equipment, comprising a random access processing device, wherein the random access processing device comprises:

the information receiving module is used for acquiring the distribution information of the physical random access channel PRACH through the broadcast message;

a PRACH selection module, configured to select a PRACH for sending a random access preamble according to the PRACH distribution information;

and the random access radio network temporary identifier RA-RNTI determining module is used for determining an RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution.

An information sending method, comprising:

a base station determines the distribution information of a physical random access channel PRACH and the information needed by a user equipment UE to determine a random access radio network temporary identifier RA-RNTI;

And the base station sends a broadcast message, and the broadcast message carries the PRACH distribution information and the information required by the UE for determining the RA-RNTI.

A base station comprising an information transmitting apparatus, characterized in that the information transmitting apparatus comprises:

the information determining module is used for determining the distribution information of a Physical Random Access Channel (PRACH) and the information required by the User Equipment (UE) for determining a random access radio network temporary identifier (RA-RNTI);

and the message sending module is used for sending a broadcast message, and the broadcast message carries the PRACH distribution information and the information required by the UE for determining the RA-RNTI.

The scheme can reduce the number of RA-RNTI values required by the system and save RA-RNTI value resources.

Drawings

Fig. 1 is a flowchart of a method for determining RA-RNTI according to an embodiment of the present invention;

fig. 2 is a block diagram of a random access processing apparatus in a user equipment according to an embodiment of the present invention;

fig. 3 is a flowchart of a second information sending method according to an embodiment of the present invention;

FIG. 4 is a block diagram of an information transmitting apparatus in a second base station according to an embodiment of the present invention;

FIG. 5 is a signaling flow diagram of application example one of the present invention;

FIGS. 6A and 6B are diagrams of example two PARCH ordering and PARCH and RA-RNTI value mapping, respectively, for the present application;

Fig. 7 is a diagram illustrating a signaling format indicating the priority of PRACH information on which the ranking is based according to an exemplary application of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

Example one

In this embodiment, a new method for determining the RA-RNTI value is designed to save the RA-RNTI value resource as much as possible. The embodiment is used for an NB IoT system, but is not limited thereto, and may also be used for other communication systems to save RA-RNTI value resources.

As shown in fig. 1, the method for determining the RA-RNTI value in this embodiment includes:

step 110, User Equipment (UE) acquires information of Physical Random Access Channel (PRACH) distribution through broadcast messages, and selects a PRACH for sending a random access preamble;

the UE in the present application may be a terminal device of various communication systems including the internet of things.

In this embodiment, the PRACH distribution information includes one or more of the following information: a start of a time period of PRACH distribution; length of time period of PRACH distribution; and information of the PRACH deployed in the time period; wherein the information of the PRACH deployed within the time period includes one or more of the following information: a type of PRACH; a starting subframe of a PRACH; an ending subframe of the PRACH; the length of the PRACH; the starting carrier frequency of the PRACH; an ending carrier frequency of the PRACH; the number of subcarriers used by the PRACH; and the coverage level of the PRACH. The type of PRACH may be divided according to the length of the PRACH and/or the number of subcarriers used by the PRACH, for example, into a single subcarrier type and a multiple subcarrier type. But is not limited to this and other classification methods are possible.

And step 120, the UE determines the RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution.

In this embodiment, the mapping relationship between the PRACH and the RA-RNTI values in the PRACH distribution is a one-to-one correspondence relationship between the PRACH and the RA-RNTI values. In this step, the determining, by the UE, the RA-RNTI value corresponding to the PRACH that sends the random access preamble according to the mapping relationship between the PRACH and the RA-RNTI values in the PRACH distribution includes: determining the sequence number of the PRACH for sending the random access preamble in the PRACH distribution according to the PRACH distribution information and a set sequencing mode; and determining the RA-RNTI value with the same sequence number in the range of the RA-RNTI value as the RA-RNTI value corresponding to the PRACH for sending the random access preamble.

The set sorting mode can be determined according to one or more of the following information: ordering information of the based PRACH; prioritizing information of the based PRACH; and ordering rules under the same PRACH information, such as from small to large or from large to small. The information for determining the sorting mode is obtained by the following modes: acquiring through broadcast messages; or, appointing by means of a standard protocol; or, part of the information is acquired through broadcast messages, and part of the information is agreed in a standard protocol mode. In addition, the value range of the RA-RNTI can be acquired through broadcast messages or agreed by a standard protocol.

For example, the PRACH in the PRACH distribution may have its starting subframe and starting carrier frequency as reference points for ordering (but may also have its ending subframe and ending carrier frequency as reference points for ordering). And the sequencing mode is to take the first subframe of a certain system frame as a starting point and sequence the starting subframe numbers from small to large, if a plurality of PRACHs with the same starting subframe numbers exist, then sequence the starting carrier frequencies from small to large. For another example, when there are multiple PRACH types, different types of PRACH with the same reference point may be mapped in a certain type order, and at this time, the priority of the reference point of the PRACH in the ordering is higher than the type of the PRACH. Or, when there are multiple types of PRACH, a certain type of PRACH may be sorted according to a reference point first, and then a next type of PRACH may be sorted according to the reference point, where a priority of the type of PRACH in the sorting is higher than the reference point of the PRACH.

The RA-RNTI value determined by the UE in this step is used when the subsequent RAR is received.

In another embodiment, the communication system may be compatible with multiple RA-RNTI value determination approaches, such as a conventional calculation-based RA-RNTI determination approach and the mapping-based RA-RNTI determination approach of the present embodiment. At this time, before the UE determines the RA-RNTI value corresponding to the PRACH by sending the random access preamble according to the mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution, the method further includes: and the UE acquires the indication information of the RA-RNTI determining mode from the broadcast message, and determines the RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution when the RA-RNTI determining mode based on mapping is determined to be adopted according to the indication information. Wherein the indication information may include: information indicating whether a mapping-based RA-RNTI determination manner is employed; or, the information whether a mapping-based RA-RNTI determination mode is adopted or not is respectively indicated for different types of PRACHs.

The present embodiment also provides a user equipment, including a random access processing apparatus, as shown in fig. 2, where the random access processing apparatus includes:

an information receiving module 10, configured to obtain information about distribution of a physical random access channel PRACH through a broadcast message;

a PRACH selection module 20, configured to select a PRACH that sends a random access preamble according to the PRACH distribution information;

and a random access radio network temporary identifier (RA-RNTI) determining module 30, configured to determine, according to a mapping relationship between a PRACH and RA-RNTI values in the PRACH distribution, an RA-RNTI value corresponding to the PRACH that transmits the random access preamble.

Alternatively,

the information of the PRACH distribution acquired by the information receiving module includes one or more of the following information:

a start of a time period of PRACH distribution;

length of time period of PRACH distribution; and

information of PRACH deployed within the time period;

wherein the information of the PRACH deployed within the time period includes one or more of the following information:

a type of PRACH;

a starting subframe of a PRACH;

an ending subframe of the PRACH;

the length of the PRACH;

the starting carrier frequency of the PRACH;

an ending carrier frequency of the PRACH;

the number of subcarriers used by the PRACH;

Coverage level of PRACH.

Alternatively,

and the mapping relation between the PRACH and the RA-RNTI values in the PRACH distribution is a one-to-one corresponding relation between the PRACH and the RA-RNTI values.

Alternatively,

the RA-RNTI determining module comprises:

a sequence number determining unit, configured to determine, according to the PRACH distribution information and a set ordering manner, a sequence number of the PRACH that sends the random access preamble in the PRACH distribution;

and the RA-RNTI determining unit is used for determining RA-RNTI values with the same sequence number in the range of the RA-RNTI values as RA-RNTI values corresponding to the PRACH for sending the random access preamble.

Alternatively,

the sequence number determining unit determines the sequence number of the PRACH for sending the random access preamble in the PRACH distribution according to the information of the PRACH distribution and a set sequencing mode; wherein the sorting mode is determined according to one or more of the following information:

ordering information of the based PRACH;

prioritizing information of the based PRACH;

ordering rules under the same PRACH information;

wherein, the information for determining the sorting mode is obtained by the following mode: acquiring through broadcast messages; or, appointing by means of a standard protocol; or, part of the information is acquired through broadcast messages, and part of the information is agreed in a standard protocol mode; the value range of the RA-RNTI is obtained through broadcast messages or agreed by a standard protocol.

Alternatively,

the information receiving module is also used for acquiring the indication information of the RA-RNTI determining mode from the broadcast message;

and the RA-RNTI determining module is also used for determining whether a mapping-based RA-RNTI determining mode is adopted according to the indication information, and if so, determining an RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution.

Alternatively,

the user equipment is used for a narrowband Internet of things NB-IoT system.

As described above, in the present embodiment, one-to-one mapping between PRACH and RA-RNTI is performed within a certain range according to actually configured PRACH distribution. In the RA-RNTI determining mechanism, RA-RNTI values are not directly calculated and obtained by different calculation factors through a formula, but are obtained in a one-to-one correspondence mode according to actual distribution of PRACH (physical random access channel) obtained by UE (user equipment) in broadcast messages on one or more system frames and RA-RNTI values in a certain value range defined in advance according to a certain sequence. In order to be compatible with a legacy communication system, such as an LTE system, the base station may indicate in a broadcast message of the system that the RA-RNTI determination is either in a legacy calculation mode or in a mapping-based mode. And the user equipment can acquire the information required for determining the sorting mode through broadcast messages and/or conventions in standard protocols.

The scheme of the embodiment can reduce the number of RA-RNTI values required by the system, save RA-RNTI value resources, and is particularly suitable for multi-UE, multi-category and multi-coverage random access support of an NB IoT system.

Example two

The present embodiment provides an information sending method, as shown in fig. 3, including:

step 210, a base station determines information of physical random access channel PRACH distribution, and user equipment UE determines information required by random access radio network temporary identifier RA-RNTI based on the mapping of PRACH and RA-RNTI value;

in this embodiment, the PRACH distribution information includes one or more of the following information: a start of a time period of PRACH distribution; length of time period of PRACH distribution; and information of the PRACH deployed in the time period; wherein the information of the PRACH deployed within the time period includes one or more of the following information: a type of PRACH; a starting subframe of a PRACH; an ending subframe of the PRACH; the length of the PRACH; the starting carrier frequency of the PRACH; an ending carrier frequency of the PRACH; the number of subcarriers used by the PRACH; and the coverage level of the PRACH.

In this embodiment, the information required by the UE to determine the RA-RNTI based on the mapping between the PRACH and the RA-RNTI values includes one or more of the following information: ordering information of the based PRACH; prioritizing information of the based PRACH; ordering rules under the same PRACH information; indication information of the RA-RNTI determining mode and information of the value range of the RA-RNTI. The base station can draw a group of RNTI values as alternative RA-RNTIs for one-to-one mapping and broadcast the RA-RNTI values to all the UE, wherein the range of the RA-RNTI values is a set of the group of RNTI values, and the range of the RA-RNTI values can be represented by an interval limited by the minimum value of the RA-RNTI and the maximum value of the RA-RNTI, and can also be represented by the number of the minimum value of the RA-RNTI and the RA-RNTI values. Wherein the indication information may include: information indicating whether a mapping-based RA-RNTI determination manner is employed; or, the information whether a mapping-based RA-RNTI determination mode is adopted or not is respectively indicated for different types of PRACHs.

Step 220, the base station sends a broadcast message, wherein the broadcast message carries the information of the PRACH distribution and the information needed by the UE for determining the RA-RNTI based on the mapping of the PRACH and the RA-RNTI value.

The method of the embodiment is used for the narrowband internet of things NB-IoT system, but is not limited to this, and may also be used for other communication systems.

The base station of this embodiment includes an information transmitting apparatus, and is characterized in that the information transmitting apparatus includes:

an information determining module 50, configured to determine information about PRACH distribution of a physical random access channel, and determine, by a user equipment UE, information required by a random access radio network temporary identifier RA-RNTI based on mapping of PRACH and RA-RNTI values;

and a message sending module 60, configured to send a broadcast message, where the broadcast message carries the PRACH distribution information and information required by the UE to determine an RA-RNTI based on the mapping between the PRACH and the RA-RNTI value.

Alternatively,

the information of the PRACH distribution determined by the information determination module comprises one or more of the following information: a start of a time period of PRACH distribution; length of time period of PRACH distribution; and information of the PRACH deployed in the time period; wherein the information of the PRACH deployed within the time period includes one or more of the following information: a type of PRACH; a starting subframe of a PRACH; an ending subframe of the PRACH; the length of the PRACH; the starting carrier frequency of the PRACH; an ending carrier frequency of the PRACH; the number of subcarriers used by the PRACH; and the coverage level of the PRACH.

Alternatively,

the information determining module determines information required by the RA-RNTI determination by the UE based on the mapping of the PRACH and the RA-RNTI value, and the information comprises one or more of the following information: ordering information of the based PRACH; prioritizing information of the based PRACH; ordering rules under the same PRACH information; indication information of an RA-RNTI determination mode; and information of the value range of the RA-RNTI.

The base station of this embodiment is a base station of a narrowband internet of things NB-IoT system, but is not limited to this, and may also be a base station of another communication system.

The information sending method of the embodiment can send the information required by the UE for determining the RA-RNTI based on the mapping of the PRACH and the RA-RNTI value, so that the UE can determine the RA-RNTI based on the mapping of the PRACH and the RA-RNTI value, and RA-RNTI resources are saved.

The invention is further illustrated by examples of several applications.

Example 1

Fig. 5 is a signaling flow of determining the RA-RNTI value based on the mapping manner in this example. As shown, it includes:

step one, a base station broadcasts PRACH distribution information, and sends indication information of an RA-RNTI determining mode and information of a determining sequencing mode through broadcast messages;

for example, the indication information may be represented by 1bit, and when the value of the bit is '1', it represents that the RA-RNTI value is determined in a mapping-based manner; when the value of this bit is '0', this means that the RA-RNTI value is determined in a conventional calculation manner, and this example assumes that the value of this bit is '1'. For PRACH of different types or formats, indication information of an RA-RNTI determining mode can be set respectively; alternatively, the same indication information of the RA-RNTI determination method may be shared for all PRACH.

The information for determining the sorting mode may include one or more of the following information: ordering information of the based PRACH; prioritizing information of the based PRACH; ordering rules under the same PRACH information. The information of the PRACH based on the ranking may be a PRACH type, a subframe where the PRACH is located, a frequency of PRACH usage, a PRACH coverage level, and the like. The priority of such information may be notified in a broadcast message or agreed upon in standard protocols.

The indication information and the information determining the sorting manner are optional. The base station may also formulate a set of RNTI values as alternative RA-RNTIs for one-to-one mapping and broadcast to all UEs.

Step two, the UE obtains the information of PRACH distribution according to the broadcast message, and selects a PRACH to send a random access preamble;

step three, the UE acquires the indication information of the RA-RNTI determining mode from the broadcast message, and determines the RA-RNTI value determining mode to be adopted according to the value of the indication information, in the example, the UE determines to adopt the RA-RNTI value determining mode based on mapping;

and if the indication information indicates that the traditional calculation mode is adopted, the UE determines an RA-RNTI value by adopting the traditional calculation mode for subsequent RAR receiving.

And step four, the UE determines an RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution by adopting a mapping-based RA-RNTI value determination mode for subsequent RAR receiving.

Example two

This example is a specific example of RA-RNTI mapping. Fig. 6A is a diagram illustrating a simple time-sequential PRACH ordering according to different types; fig. 6B is a schematic diagram of obtaining a corresponding RA-RNTI value according to a sequence number of a PRACH in a simple one-to-one mapping manner. As shown in fig. 6A, in the time period (total 10 subframes) of the PARCH shown, 3 types of PARCH are included: 10 short PRACH (length less than one subframe), 1 long PRACH (length greater than one subframe) and one comparatively wide frequency domain PRACH (using multiple sub-frequency waves). In this example, the type priority of PARCH is highest, and the order of the 3 types is: a short PARCH using 1 subcarrier, a long PARCH using 1 subcarrier, and a PARCH using multiple carriers. The PARCHs of the same type are sorted in the order of the starting sub-frame from small to large in this example, and therefore, the sorted sequence numbers of the 12 PARCHs in the figure are shown as including PRACH 1-PRACH 10, PRACH11 and PRACH 12. As shown in fig. 6B, PRACH values with different sequence numbers are sequentially mapped one-to-one with RA-RNTI values within an RA-RNTI value range, each PRACH corresponds to one RA-RNTI value with the same sequence number, and the sequence numbers of the RA-RNTI values within the RA-RNTI value range may be determined by sequencing the RA-RNTI values from small to large, or determined by sequencing the RA-RNTI values from large to small, or directly determined by the defined sequence numbers. Because the UE and the base station are mapped in the same mode, the UE and the base station can find out a correct RA-RNTI value according to PRACH distribution information, RA-RNTI value range, information for determining a sequencing mode and the like.

It should be noted that the present example is information for ordering PARCH with the type of PARCH as the highest priority, but is not limited to this. Other information such as the starting subframe, starting frequency, etc. of the PARCH may also be prioritized as the highest priority. Fig. 7 is a signaling format providing an indication of the priority of the information ordering the based PRACH. As shown, one byte may indicate 4 sorting priority parameters, wherein each priority takes 2 bits, and 4 parameters are indicated from front to back: PRACH type, starting subframe of PARCH, starting frequency of PARCH, and coverage level of PARCH (which may be expressed in number of repetitions). And the 2-bit value may take 00, 01, 10, and 11, indicating a high to low priority. As shown, the signaling values of the priorities of this example are: 0001XXXX (X is 0 or 1) indicates that the PARCH type is ordered first, for the same type, and then for the starting subframe of the PARCH, since there are no multiple PARCHs of the same PARCH type and starting subframe, so the UE is not concerned with the value of the last 4 bits. The order of priority shown may also be fixed and agreed upon in advance by standard protocols. In addition, the sorting method is flexible and changeable for the information with the same priority. For example, the time may be from early to late (specifically, the starting subframe may be from small to large), or may be from late to early (specifically, the starting subframe may be from large to small); the frequency may be from high to low or low to high. These may be notified via a broadcast message or agreed upon in advance via standard protocols.

The integrated module of the present invention may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the method of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software. Correspondingly, the embodiment of the invention also provides a computer storage medium, wherein a computer program is stored, and the computer program is used for executing the implementation method provided by the invention.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of determining a random access radio network temporary identity, RA-RNTI, comprising:

the method comprises the steps that User Equipment (UE) acquires information of Physical Random Access Channel (PRACH) distribution through broadcast messages, and selects a PRACH for sending a random access preamble, wherein the information of the PRACH distribution comprises the information of the PRACH deployed in a time period of the PRACH distribution, and the information of the PRACH deployed in the time period comprises the length of the PRACH and/or the coverage grade of the PRACH;

2. The method of claim 1, wherein:

the information of the PRACH distribution further comprises one or more of the following information:

a start of a time period of PRACH distribution;

length of time period of PRACH distribution;

wherein the information of the PRACH deployed within the time period further includes one or more of the following information:

a type of PRACH;

a starting subframe of a PRACH;

an ending subframe of the PRACH;

the starting carrier frequency of the PRACH;

an ending carrier frequency of the PRACH;

the number of subcarriers used by the PRACH.

3. The method of claim 2, wherein:

The type of PRACH is determined from one or more of the following information:

the length of the PRACH;

the number of subcarriers used for PRACH.

4. The method of claim 1, wherein:

5. The method of any of claims 1-4, wherein:

the UE determines an RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution, and the method comprises the following steps:

determining the sequence number of the PRACH for sending the random access preamble in the PRACH distribution according to the PRACH distribution information and a set sequencing mode;

and determining the RA-RNTI value with the same sequence number in the range of the RA-RNTI value as the RA-RNTI value corresponding to the PRACH for sending the random access preamble.

6. The method of claim 5, wherein:

the sorting mode is determined according to one or more of the following information:

ordering information of the based PRACH;

prioritizing information of the based PRACH;

ordering rules under the same PRACH information.

7. The method of claim 6, wherein:

The information for determining the sorting mode is obtained through the following modes:

acquiring through broadcast messages; or, appointing by means of a standard protocol; or, part of the information is acquired through broadcast messages, and part of the information is agreed in a standard protocol mode;

the value range of the RA-RNTI is obtained through broadcast messages or agreed by a standard protocol.

8. The method of any of claims 1-4, 6-7, wherein:

before the UE determines the RA-RNTI value corresponding to the PRACH transmitting the random access preamble according to the mapping relationship between the PRACH and the RA-RNTI value in the PRACH distribution, the method further includes:

and the UE acquires the indication information of the RA-RNTI determining mode from the broadcast message, and determines the RA-RNTI value corresponding to the PRACH for sending the random access preamble according to the mapping relation between the PRACH and the RA-RNTI value in the PRACH distribution when the RA-RNTI determining mode based on mapping is determined to be adopted according to the indication information.

9. The method of claim 8, wherein:

the indication information includes:

information indicating whether a mapping-based RA-RNTI determination manner is employed; or

And whether the PRACH of different types respectively indicates the information of the determination mode based on the mapped RA-RNTI.

10. The method of any of claims 1-4, 6-7, and 9, wherein:

the method is used for a narrowband internet of things (NB-IoT) system.

11. An information sending method, comprising:

the method comprises the steps that a base station determines the distribution information of a Physical Random Access Channel (PRACH), and User Equipment (UE) determines the information required by a random access radio network temporary identifier (RA-RNTI) based on the mapping of PRACH and RA-RNTI values, wherein the distribution information of the PRACH comprises the information of the PRACH deployed in a time period of PRACH distribution, and the information of the PRACH deployed in the time period comprises the length of the PRACH and/or the coverage level of the PRACH;

and the base station sends a broadcast message, wherein the broadcast message carries the PRACH distribution information and the information required by the UE for determining the RA-RNTI based on the mapping of the PRACH and the RA-RNTI value.

12. The method of claim 11, wherein:

a start of a time period of PRACH distribution;

length of time period of PRACH distribution;

a type of PRACH;

a starting subframe of a PRACH;

An ending subframe of the PRACH;

the starting carrier frequency of the PRACH;

an ending carrier frequency of the PRACH;

the number of subcarriers used by the PRACH.

13. The method of claim 11 or 12, wherein:

the UE determines information needed by RA-RNTI based on the mapping of the PRACH and the RA-RNTI value, wherein the information comprises one or more of the following information:

ordering information of the based PRACH;

prioritizing information of the based PRACH;

ordering rules under the same PRACH information;

indication information of an RA-RNTI determination mode; and

and (5) information of the value range of the RNTI.

14. The method of claim 13, wherein:

the indication information includes:

15. The method of any of claims 11-12, 14, wherein:

the method is used for a narrowband internet of things (NB-IoT) system.

16. A user equipment, comprising a random access processing device, wherein the random access processing device comprises:

A PRACH selection module, configured to select a PRACH which sends a random access preamble according to the PRACH distribution information, where the PRACH distribution information includes information of a PRACH which is deployed within a time period of PRACH distribution, and the information of the PRACH which is deployed within the time period includes a length of the PRACH and/or a coverage level of the PRACH;

17. The user device of claim 16, wherein:

the information of the PRACH distribution acquired by the information receiving module further includes one or more of the following information:

a start of a time period of PRACH distribution;

length of time period of PRACH distribution;

a type of PRACH;

a starting subframe of a PRACH;

an ending subframe of the PRACH;

the starting carrier frequency of the PRACH;

an ending carrier frequency of the PRACH;

the number of subcarriers used by the PRACH.

18. The user device of claim 16, wherein:

19. The user equipment according to any of claims 16-18, characterized by:

the RA-RNTI determining module comprises:

20. The user equipment of claim 19, wherein:

ordering information of the based PRACH;

prioritizing information of the based PRACH;

ordering rules under the same PRACH information;

21. The user equipment of any of claims 16-18, 20, wherein:

22. The user equipment of any of claims 16-18, 20, wherein:

the user equipment is used for a narrowband Internet of things NB-IoT system.

23. A base station comprising an information transmitting apparatus, characterized in that the information transmitting apparatus comprises:

the information determining module is used for determining information of Physical Random Access Channel (PRACH) distribution and determining information required by random access radio network temporary identity (RA-RNTI) by User Equipment (UE) based on mapping of PRACH and RA-RNTI values, wherein the information of PRACH distribution comprises information of PRACH deployed in a time period of PRACH distribution, and the information of PRACH deployed in the time period comprises length of PRACH and/or coverage grade of PRACH;

And the message sending module is used for sending a broadcast message, wherein the broadcast message carries the information of the PRACH distribution and the information required by the UE for determining the RA-RNTI based on the mapping of the PRACH and the RA-RNTI value.

24. The base station of claim 23, comprising:

the information of the distribution of the PRACH determined by the information determination module further comprises one or more of the following information:

a start of a time period of PRACH distribution;

length of time period of PRACH distribution;

a type of PRACH;

a starting subframe of a PRACH;

an ending subframe of the PRACH;

the starting carrier frequency of the PRACH;

an ending carrier frequency of the PRACH;

the number of subcarriers used by the PRACH.

25. The base station of claim 23 or 24, comprising:

the information needed by the UE for determining the RA-RNTI based on the mapping of the PRACH and the RA-RNTI value determined by the information determination module comprises one or more of the following information:

ordering information of the based PRACH;

prioritizing information of the based PRACH;

ordering rules under the same PRACH information;

indication information of an RA-RNTI determination mode; and

information of the value range of RA-RNTI.

26. The base station of claim 23 or 24, comprising:

the base station is a base station of a narrowband Internet of things NB-IoT system.