CN103096438A - Communication method of periodic service, effective noise bandwidth (eNB) and user experience (UE) - Google Patents

Abstract

The invention discloses a communication method of periodic service, effective noise bandwidth (eNB) and user experience (UE), and relates to the technical field of communication. The method is low in complexity of resource scheduling and energy-saving. The communication method of the periodic service includes that periodic uplink resource scheduling parameters are sent to the UE, and the UE conveniently confirms uplink sources and transmission forms of transmission of uplink date according to the periodic uplink resource scheduling parameters. The periodic uplink resource scheduling parameters comprise positions of the uplink sources on the time domain and the frequency domain, transmission forms of the uplink data, and uplink data sent by the UE.

Description

Communication method for periodic service and eNB and UE

technical field

The present invention relates to the field of communication technology, in particular to a communication method for periodic services, eNB and UE.

Background technique

The long-term evolution (Long Term Evolution, LTE) standard adopts a scheduling mechanism, and the evolved base station (Evolved Node Base-station, eNB) performs unified resource management and control. A business scenario is cyclical, and the size of the data packet is fixed, and it is mainly uplink data. For example: meter reading, periodic monitoring, status reporting, etc. For the above periodic service scenario, after the user equipment (User Equipment, UE) initially accesses the network, it remains in the connected state, so as to save signaling overhead such as bearer establishment at each random access.

When scheduling resources, for the UE, it is necessary to first detect the Physical Downlink Control Channel (PDCCH), in order to obtain the uplink scheduling information carried by the eNB in the PDCCH, and analyze the position of the uplink resources used to transmit uplink data. And the transmission format used for transmitting uplink data, so as to transmit uplink data, and the complexity of detecting PDCCH is very high, which is not conducive to UE power saving.

Contents of the invention

Embodiments of the present invention provide a periodic service communication method, eNB and UE, which realize resource scheduling with lower complexity and more energy saving.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

A communication method for periodic services, comprising:

Sending periodic uplink resource scheduling parameters to the user equipment UE, the periodic uplink resource scheduling parameters are used to determine the uplink resources and transmission format of uplink data, including: the position of the uplink resource in the time domain dimension, the frequency domain dimension and the uplink data transmission format;

receiving the uplink data sent by the UE based on the uplink resource and transmission format of the uplink data.

An eNB, comprising;

The eNB sending unit is used to send periodic uplink resource scheduling parameters to the user equipment UE, and the periodic uplink resource scheduling parameters are used to determine uplink resources and transmission formats of uplink data, including: uplink resources in the time domain dimension and frequency domain dimension The location on the network and the transmission format of the upstream data;

The eNB receiving unit is configured to receive the uplink data sent by the UE based on the uplink resource and transmission format of the uplink data.

A communication method for periodic services, comprising:

Receive the periodic uplink resource scheduling parameters sent by the base station eNB, determine the uplink resources and transmission format of the uplink data according to the periodic uplink resource scheduling parameters, the periodic uplink resource scheduling parameters include: uplink resources in the time domain dimension, frequency domain The position in the dimension and the transmission format of the upstream data;

sending the uplink data to the eNB based on the uplink resource and transmission format of the uplink data.

A UE comprising:

The UE receiving unit is configured to receive the periodic uplink resource scheduling parameter sent by the base station eNB, and determine the uplink resource and transmission format of the uplink data according to the periodic uplink resource scheduling parameter. The periodic uplink resource scheduling parameter includes: the uplink resource is in The position in the time domain dimension, the frequency domain dimension and the transmission format of the uplink data;

a UE sending unit, configured to send uplink data to the eNB based on the uplink resource and transmission format of the uplink data.

The embodiment of the present invention enables the UE to determine the uplink resource and transmission format for transmitting uplink data according to the received periodic uplink resource scheduling parameters without detecting the PDCCH, thereby reducing the complexity of resource scheduling and making the UE more power-saving.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flowchart of a communication method for an eNB providing a periodic service according to an embodiment of the present invention;

FIG. 2 is a flow chart of a UE communication method for a periodic service provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of a communication process between an eNB and a UE in an embodiment of the present invention;

FIG. 4 is a structural block diagram of an eNB provided by an embodiment of the present invention;

FIG. 5 is a structural block diagram of another eNB provided by an embodiment of the present invention;

FIG. 6 is a structural block diagram of a UE provided by an embodiment of the present invention;

FIG. 7 is a structural block diagram of another UE provided by an embodiment of the present invention;

FIG. 8 is a structural block diagram of a periodic service communication system provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of determining the position of uplink resources in the time domain dimension in an embodiment of the present invention;

FIG. 10 is a schematic diagram of random mapping of resources in the frequency domain dimension in an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An embodiment of the present invention provides an eNB communication method for periodic services, as shown in FIG. 1 , including:

Step 101. Send periodic uplink resource scheduling parameters to the UE, so that the UE can determine uplink resources and transmission formats for transmitting uplink data according to the periodic uplink resource scheduling parameters. The periodic uplink resource scheduling parameters include: uplink resources in the time domain dimension, frequency The position on the domain dimension and the transmission format of the uplink data;

Specifically, at the eNB side, the foregoing periodic uplink resource scheduling parameters are directly sent to the UE. The position of the uplink resource in the time domain dimension can be determined by the system frame number and the subframe number. Specifically, the values of the system frame number and the subframe number are calculated according to the following formula: [(SFN*10)+(subframe number)]mod( Periodicity)=PeriodicOffset, as shown in Figure 9, wherein, SFN is a system frame number (System FrameNumber, SFN), subframe number is a subframe number, Periodicity is a period, PeriodicOffset is an offset value in a period, and mod is two digital phases Operator symbol for division and remainder. Here, the number of bits of the SFN needs to be expanded. When the SFN is extended to 20 bits, one SFN polling period is 2 ²⁰ =174.8 minutes, which can represent services whose period does not exceed 174.8 minutes. The position of the uplink resource in the frequency domain dimension is indicated by the index of the physical resource block (Physical Resource Block, PRB), which can be represented by the bitmap of the PRB. Bit 1 indicates that the PRB is a configured periodic uplink resource, and bit 0 Indicates that the PRB is not a configured periodic uplink resource; or the part between the starting PRB index value and the ending PRB index value represents a configured periodic uplink resource. The transmission format of uplink data includes Modulation Coding Scheme (MCS), and may also include other transmission parameters, such as Transmission Power Control Command Word (Transmitted Power Control, TPC), Redundant Version (Redundant Version, RV), reference signal Cyclic shift offset, whether to feed back a channel quality indicator (Channel Quality Indicator, CQI) aperiodically.

Step 102, receiving uplink data sent by the UE.

By sending the periodic uplink resource scheduling parameters to the UE, the UE can determine the uplink resource and transmission format for transmitting uplink data according to the periodic uplink resource scheduling parameters without detecting the PDCCH, thereby reducing the complexity of resource scheduling and enabling the UE More power saving.

The embodiment of the present invention also provides a periodic service UE communication method, as shown in FIG. 2 , including:

Step 201: Receive the periodic uplink resource scheduling parameters sent by the eNB, and determine the uplink resources and transmission format for transmitting uplink data according to the periodic uplink resource scheduling parameters. The periodic uplink resource scheduling parameters include: uplink resources in the time domain dimension and frequency domain dimension The location on the network and the transmission format of the upstream data;

Specifically, the periodic uplink resource scheduling parameters are the same as those in the foregoing embodiments, and will not be repeated here.

Step 202, sending uplink data to the eNB.

Specifically, the UE sends the uplink data to the eNB according to the determined transmission format of the uplink data on the uplink resource determined according to the periodic uplink resource scheduling parameter.

The UE determines the uplink resource and transmission format for transmitting uplink data according to the received periodic uplink resource scheduling parameters without detecting the PDCCH, thereby reducing the complexity of resource scheduling and enabling the UE to save more power.

Based on the communication method for the periodic service described above, the communication method for the periodic service described in the present invention is further described by taking the communication process between the eNB and the UE as an example, as shown in FIG. 3 , including the following steps:

Step 302, the eNB sends periodic uplink resource scheduling parameters and downlink resource scheduling parameters to the UE, so that the UE can determine uplink resources and transmission formats for transmitting uplink data and transmit downlink data according to the periodic uplink resource scheduling parameters and downlink resource scheduling parameters The downlink resource and transmission format of the periodic uplink resource scheduling parameters include: the position of the uplink resource in the time domain dimension, the frequency domain dimension and the transmission format of the uplink data, and the downlink resource scheduling parameters include: the position of the downlink resource in the frequency domain dimension And the transmission format of the downlink data.

Specifically, sending periodic uplink resource scheduling parameters or/and downlink resource scheduling parameters to the UE through high-level radio resource control (Radio Resource Control, RRC) signaling; when the periodic uplink resource scheduling parameters or/and downlink resource scheduling parameters are updated At this time, the updated periodic uplink resource scheduling parameters or/and downlink resource scheduling parameters are sent to the UE through RRC reconfiguration signaling. A specific method for defining resource scheduling parameters is the same as that of the above-mentioned embodiment, and will not be repeated here.

It should be noted that the downlink resource scheduling parameter in this step may also include the position of the downlink resource in the time domain dimension, and the eNB may also only send the periodic uplink resource scheduling parameter without sending the downlink resource scheduling parameter.

Optionally, the position of the uplink resource or the downlink resource in the frequency domain dimension is obtained by random mapping. Specifically, as shown in FIG. 10, a plurality of physical resource block PRB positions are configured for the UE through radio resource control RRC signaling; a PRB position is selected as an uplink resource or a downlink resource for the UE according to a random function at multiple PRB positions in each cycle ;

The above random function is:

$\left\{\begin{array}{c}{\mathrm{<span\; class="notranslate">\; Y</span>}}_{\mathrm{<span\; class="notranslate">\; k</span>}}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; A</span>}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; Y</span>}}_{\mathrm{<span\; class="notranslate">\; K</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; mod</span>}\mathrm{<span\; class="notranslate">\; D.</span>}\\ {\mathrm{<span\; class="notranslate">\; Z</span>}}_{\mathrm{<span\; class="notranslate">\; K</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; Y</span>}}_{\mathrm{<span\; class="notranslate">\; K</span>}}\mathrm{<span\; class="notranslate">\; mod</span>}{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; PDSCH</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; BLOCK</span>}}\end{array}\right.<span\; class="notranslate">\; ,</span>$

Among them, N _PDSCH-BLOCK is the number of PRB positions in the physical resource block, K is the number of subframe identifiers, and the value is 0≤K≤9, and Y _-1 is the identifier of the UE, that is, n _RNTI , specifically Y _-1 =n _RNTI ≠ 0, A and D are relatively large prime numbers, usually A=39827, D=65537, mod is an operation symbol for dividing two numbers to obtain a remainder, and Z is a position index of a physical resource block PRB. Similarly, other rules may also be used to ensure that the resources occupied by each UE in the same Transmission Time Interval (Transmission Time Interval, TTI) according to a random function do not overlap.

Step 303: The UE receives the periodic uplink resource scheduling parameter and downlink resource scheduling parameter sent by the eNB, and determines the uplink resource and transmission format for transmitting uplink data and the downlink resource and format for transmitting downlink data according to the periodic uplink resource scheduling parameter and downlink resource scheduling parameter Transmission format, periodic uplink resource scheduling parameters include: the location of uplink resources in the time domain dimension, frequency domain dimension and the transmission format of uplink data, and downlink resource scheduling parameters include: the location of downlink resources in the frequency domain dimension and the location of downlink data transmission format.

Specifically, the periodic uplink resource scheduling parameter and/or downlink resource scheduling parameter sent by the eNB is received through radio resource control RRC signaling; when the periodic uplink resource scheduling parameter and/or downlink resource scheduling parameter is updated, the radio resource control RRC The reconfiguration signaling receives the updated periodic uplink resource scheduling parameter and/or downlink resource scheduling parameter sent by the eNB.

It should be noted that the downlink resource scheduling parameter in this step may also include the position of the downlink resource in the time domain dimension, and the UE may only receive the periodic uplink resource scheduling parameter and not receive the downlink resource scheduling parameter.

Step 304, UE sends uplink data to eNB.

Specifically, the UE sends uplink data to the eNB on the uplink resource determined according to the periodic uplink resource scheduling parameters, that is, the position of the uplink resource in the time domain dimension and the frequency domain dimension and the transmission format of the uplink data.

Step 305, the eNB receives the uplink data sent by the UE.

Step 306: After receiving the uplink data sent by the UE and sending the downlink resource scheduling parameters to the UE, the eNB feeds back joint indication information to the UE. The joint indication information includes an uplink retransmission indication and a downlink indication, and the uplink retransmission indication is used to indicate whether there is an uplink retransmission indication. The data needs to be retransmitted, and the downlink indication is used to indicate whether there is downlink data to be transmitted.

Specifically, the uplink retransmission indication is ACK/NACK, ACK is an acknowledgment (Acknowledgment), that is, indicating that no uplink data needs to be retransmitted, and NACK is a negative acknowledgment (NegativeAcknowledgment), that is, indicating that there is uplink data that needs to be retransmitted, where one bit represents ACK/NACK result, another bit indicates downlink indication. If there is no uplink data to be retransmitted, the configured uplink resources are scheduled for use by other UEs within this period.

Step 307. The UE receives the joint indication information fed back by the eNB. The joint indication information includes an uplink retransmission indication and a downlink indication. The uplink retransmission indication is used to indicate whether there is uplink data to be retransmitted, and the downlink indication is used to indicate whether there is downlink data to be transmitted. .

Specifically, the UE determines whether there is uplink data to be retransmitted and whether there is downlink data to be transmitted according to the joint indication information. If there is no uplink data to be retransmitted and no downlink data to be transmitted, the UE directly turns off the transceiver and enters a sleep state until the next period.

Step 308: If there is uplink data to be retransmitted, the UE retransmits the uplink data to the eNB according to the position of the uplink resource in the frequency domain dimension and the transmission format in the uplink resource scheduling parameters after receiving the joint indication information fed back by the eNB.

Step 309, if there is uplink data to be retransmitted, the eNB receives the uplink data retransmitted by the UE.

If there is no uplink data to be retransmitted, within this period, the configured uplink resources are scheduled for use by other UEs (mainly referring to other aperiodic service UEs).

Step 310, if there is downlink data to be transmitted, the eNB sends the downlink data to the UE after feeding back the joint indication information to the UE.

Specifically, if the downlink resource scheduling parameters are sent to the UE, then the downlink data is sent according to the position of the downlink resources in the frequency domain dimension determined by the downlink resource scheduling parameters and the transmission format of the downlink data; if no downlink resource scheduling parameters are sent to the UE, The position of the downlink resource in the frequency domain dimension and the transmission format of the downlink data are sent through the PDCCH, and the downlink data is sent to the UE. The downlink data may include one or any combination of the following: updated periodic uplink resource scheduling parameters, updated downlink resource scheduling parameters and service data.

Step 311, if there is downlink data to be transmitted, the UE receives the downlink data sent by the eNB after receiving the joint indication information fed back by the eNB.

Specifically, if the UE receives the downlink resource scheduling parameters sent by the eNB, when the UE receives the joint indication information fed back by the eNB in the mth subframe, the downlink resources and transmission parameters determined according to the downlink resource scheduling parameters in the m+kth subframe The format receives the downlink data sent by the eNB, where k represents the necessary preparation time, and in a Frequency Division Duplexing (FDD) system, generally k=4; if the UE does not receive the downlink resource scheduling parameters sent by the eNB, the same The UE receives the joint indication information fed back by the eNB in the mth subframe, detects the PDCCH in the m+kth subframe to obtain the position of the downlink resource in the frequency domain dimension and the transmission format of the downlink data, and receives the downlink data sent by the eNB. If the UE receives new periodic uplink resource scheduling parameters and/or updated downlink resource scheduling parameters sent by the eNB, it will release the resources determined by the previously received resource scheduling parameters in the next period, and use the resources determined by the updated resource scheduling parameters resource.

If there is no downlink data to be transmitted, within this period, the eNB schedules the configured downlink resources for use by other UEs (mainly referring to other aperiodic service UEs).

Step 312 , after receiving the downlink data sent by the eNB, the UE feeds back a downlink retransmission indication to the eNB, so that the eNB can determine whether there is downlink data to be retransmitted.

In step 313, the eNB receives the downlink retransmission indication fed back by the UE to determine whether there is downlink data to be retransmitted.

Step 314, if downlink data needs to be retransmitted, the eNB retransmits the downlink data to the UE.

Step 315: If there is downlink data that needs to be retransmitted, the UE receives the downlink data retransmitted by the eNB according to the downlink resource scheduling parameters after feeding back the downlink retransmission indication to the eNB.

Specifically, actions performed by the UE according to the joint indication information are shown in Table 1.

Table 1: Actions performed by UE according to joint indication information

It should be noted that, in the above embodiment, the UE may not use the uplink resource and downlink resource configured by the eNB to retransmit data, but detect the PDCCH to determine the resource and transmission format and retransmit the data. When the downlink data is also periodic, the downlink resource scheduling parameters can also include the position of the downlink resource in the time domain dimension, which is the same as the transmission of the uplink data, and the downlink resource can be transmitted directly according to the position in the time domain dimension determined by the downlink resource scheduling parameter. data.

Compared with the prior art, the communication method provided by the embodiment of the present invention makes the UE not need to detect the PDCCH every cycle, but determines the transmission uplink and downlink resources and the transmission format according to the resource scheduling parameters configured by the eNB. For whether there is downlink data , UE does not need to detect PDCCH in every subframe, but obtains downlink indication at the same time by receiving ACK/NACK to determine whether there is downlink data, which reduces the complexity of resource scheduling and makes UE more power-saving.

The embodiment of the present invention also provides an eNB, as shown in Figure 4, including:

The eNB sending unit 11 is configured to send periodic uplink resource scheduling parameters to the UE, so that the UE can determine uplink resources and transmission formats for transmitting uplink data according to the periodic uplink resource scheduling parameters. The periodic uplink resource scheduling parameters include: The position on the domain dimension, the frequency domain dimension and the transmission format of the uplink data;

The eNB receiving unit 12 is configured to receive uplink data sent by the UE.

The specific communication method is the same as the above embodiment, and will not be repeated here.

By sending the periodic uplink resource scheduling parameters to the UE, the UE can determine the uplink resource and transmission format for transmitting uplink data according to the periodic uplink resource scheduling parameters without detecting the PDCCH, thereby reducing the complexity of resource scheduling and enabling the UE More power saving.

The embodiment of the present invention also provides another eNB, as shown in FIG. 5 , including: an eNB sending unit 11 , an eNB receiving unit 12 , an eNB feedback unit 13 and a resource determining unit 14 .

Further, the eNB sending unit 11 is also used to send the downlink resource scheduling parameters to the UE before receiving the uplink data sent by the UE, so that the UE can determine the downlink resources and transmission format for transmitting downlink data according to the downlink resource scheduling parameters, and the downlink resource scheduling The parameters include: the position of the downlink resource in the frequency domain dimension and the transmission format of the downlink data.

Further, the eNB sending unit 11 is specifically configured to: send periodic uplink resource scheduling parameters to UE through radio resource control RRC signaling; send downlink resource scheduling parameters to the UE through radio resource control RRC signaling.

The eNB feedback unit 13 is configured to feed back joint indication information to the UE after the eNB receiving unit 12 receives the uplink data sent by the UE. The joint indication information includes an uplink retransmission indication and a downlink indication, and the uplink retransmission indication is used to indicate whether there is uplink data Retransmission is required, and the downlink indication is used to indicate whether there is downlink data to be transmitted.

Further, the eNB sending unit 11 is also configured to send the downlink data to the UE after feeding back the joint indication information to the UE if there is downlink data to be transmitted.

Specifically, the downlink data may include one or any combination of the following: updated periodic uplink resource scheduling parameters, updated downlink resource scheduling parameters, and service data.

It also includes a resource determination unit 14, configured to configure multiple physical resource block positions for the UE through radio resource control RRC signaling; select a physical resource block position for the UE according to a random function at multiple physical resource block positions in each period as an uplink resource or downlink resources; the random function is

$\left\{\begin{array}{c}{\mathrm{<span\; class="notranslate">\; Y</span>}}_{\mathrm{<span\; class="notranslate">\; k</span>}}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; A</span>}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; Y</span>}}_{\mathrm{<span\; class="notranslate">\; K</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; mod</span>}\mathrm{<span\; class="notranslate">\; D.</span>}\\ {\mathrm{<span\; class="notranslate">\; Z</span>}}_{\mathrm{<span\; class="notranslate">\; K</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; Y</span>}}_{\mathrm{<span\; class="notranslate">\; K</span>}}\mathrm{<span\; class="notranslate">\; mod</span>}{\mathrm{<span\; class="notranslate">\; N</span>}}_{\mathrm{<span\; class="notranslate">\; PDSCH</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; BLOCK</span>}}\end{array}\right.<span\; class="notranslate">\; ,</span>$

Among them, N _PDSCH-BLOCK is the number of physical resource block positions, K is the number of subframe identifiers, the value is 0≤K≤9, Y is the identifier of UE, A and D are prime numbers, and mod is the remainder after dividing two numbers The operation symbol of , Z is the position of the physical resource block.

The specific communication method is the same as the above embodiment, and will not be repeated here.

Compared with the prior art, the eNB provided by the embodiment of the present invention makes the UE not need to detect the PDCCH every cycle, but determines the uplink resource and transmission format for transmitting uplink data according to the periodic uplink resource scheduling parameters configured by the eNB. With downlink data, UE does not need to detect PDCCH in every subframe, but obtains downlink indication at the same time by receiving ACK/NACK to determine whether there is downlink data, which reduces the complexity of resource scheduling and makes UE more power-saving.

The embodiment of the present invention also provides a UE, as shown in FIG. 6, including:

The UE receiving unit 21 is configured to receive periodic uplink resource scheduling parameters sent by the eNB, and determine uplink resources and transmission formats for transmitting uplink data according to the periodic uplink resource scheduling parameters. The periodic uplink resource scheduling parameters include: uplink resources in the time domain dimension , the position in the frequency domain dimension and the transmission format of the uplink data;

UE sending unit 22, configured to send uplink data to eNB.

The specific communication method may be the same as that in the foregoing embodiment, and will not be repeated here.

The UE determines the uplink resource and transmission format for transmitting uplink data according to the received periodic uplink resource scheduling parameters without detecting the PDCCH, thereby reducing the complexity of resource scheduling and enabling the UE to save more power.

The embodiment of the present invention also provides another UE, as shown in FIG. 7 , including: a UE receiving unit 21 , a UE sending unit 22 and a UE feedback unit 23 .

Further, the UE receiving unit 21 is also configured to receive downlink resource scheduling parameters sent by the eNB before sending uplink data to the eNB, and determine downlink resources and transmission formats for transmitting downlink data according to the downlink resource scheduling parameters, and the downlink resources The scheduling parameters include: the position of the downlink resource in the frequency domain dimension and the transmission format of the downlink data.

Further, the UE receiving unit 21 is also configured to receive joint indication information fed back by the eNB after sending the uplink data to the eNB, the joint indication information includes an uplink retransmission indication and a downlink indication, and the uplink retransmission indication is used to indicate whether there is uplink data Retransmission is required, and the downlink indication is used to indicate whether there is downlink data to be transmitted.

Further, the UE receiving unit 21 is further configured to receive the downlink data sent by the eNB after receiving the joint indication information fed back by the eNB if there is downlink data to be transmitted.

Specifically, the downlink data may include one or any combination of the following: updated periodic uplink resource scheduling parameters, updated downlink resource scheduling parameters, and service data.

Further, the UE sending unit 22 is also configured to, if there is uplink data that needs to be retransmitted, after receiving the joint indication information fed back by the eNB, retransmit according to the position of the uplink resource in the frequency domain dimension and the transmission format in the uplink resource scheduling parameter Uplink data to eNB.

The UE feedback unit 23 is configured to feed back a downlink retransmission indication to the eNB after receiving the downlink data sent by the eNB according to the downlink resource scheduling parameters, so that the eNB can determine whether there is downlink data that needs to be retransmitted;

Further, the UE receiving unit 21 is further configured to receive the downlink data retransmitted by the eNB according to the downlink resource scheduling parameter after feeding back the downlink retransmission indication to the eNB if there is downlink data that needs to be retransmitted.

The specific communication method may be the same as that in the foregoing embodiment, and will not be repeated here.

Compared with the prior art, the UE provided by the embodiment of the present invention makes the UE not need to detect the PDCCH every period, but determines the uplink resource and transmission format for transmitting uplink data according to the periodic uplink resource scheduling parameters configured by the eNB. With downlink data, UE does not need to detect PDCCH in every subframe, but obtains downlink indication at the same time by receiving ACK/NACK to determine whether there is downlink data, which reduces the complexity of resource scheduling and makes UE more power-saving.

An embodiment of the present invention also provides a periodic service communication system, as shown in FIG. 8 , including the above-mentioned eNB and UE. The specific communication method may be the same as that in the foregoing embodiment, and will not be repeated here.

Compared with the prior art, the communication system provided by the embodiment of the present invention makes the UE not need to detect the PDCCH every cycle, but determines the uplink resource and transmission format for transmitting uplink data according to the periodic uplink resource scheduling parameters configured by the eNB, for Whether there is downlink data, UE does not need to detect PDCCH in every subframe, but obtains downlink indication at the same time by receiving ACK/NACK to determine whether there is downlink data, which reduces the complexity of resource scheduling and makes UE more power-saving.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be realized by means of software plus necessary general-purpose hardware, and of course also by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a readable storage medium, such as a floppy disk of a computer , a hard disk or an optical disk, etc., including several instructions for enabling a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (24)

1. A communication method for periodic services, characterized in that, comprising: Sending periodic uplink resource scheduling parameters to the user equipment UE, the periodic uplink resource scheduling parameters are used to determine the uplink resources and transmission format of uplink data, including: the position of the uplink resources in the time domain dimension, the frequency domain dimension and the uplink data transmission format; receiving the uplink data sent by the UE based on the uplink resource and transmission format of the uplink data. 2. The method according to claim 1, wherein the sending the periodic uplink resource scheduling parameter to the UE comprises: sending the periodic uplink resource scheduling parameter to the UE through radio resource control RRC signaling; When the periodic uplink resource scheduling parameter is updated, the updated periodic uplink resource scheduling parameter is sent to the UE through RRC reconfiguration signaling. 3. The method according to claim 1 or 2, further comprising: after receiving the uplink data sent by the UE: Feedback joint indication information to the UE, the joint indication information includes an uplink retransmission indication and a downlink indication, the uplink retransmission indication is used to indicate whether there is uplink data that needs to be retransmitted, and the downlink indication is used to indicate whether there is a downlink retransmission indication Data needs to be transferred. 4. The method according to claim 3, further comprising: Sending downlink resource scheduling parameters to the UE, the downlink resource scheduling parameters are used to determine the downlink resources and transmission format of the downlink data, including: the position of the downlink resources in the frequency domain dimension and the transmission format of the downlink data; sending downlink data to the UE based on the downlink resource and transmission format of the downlink data. 5. The method of claim 4, wherein, The downlink resource scheduling parameter also includes the position of the downlink resource in the time domain dimension. 6. The method according to claim 4 or 5, wherein the sending the downlink resource scheduling parameter to the UE comprises: sending the downlink resource scheduling parameters to the UE through radio resource control RRC signaling; When the downlink resource scheduling parameter is updated, the updated downlink resource scheduling parameter is sent to the UE through RRC reconfiguration signaling. 7. The method according to claim 6, further comprising: Configuring multiple physical resource block positions for the UE through radio resource control RRC signaling; Selecting a physical resource block position for the UE as the uplink resource or downlink resource according to a random function at the plurality of physical resource block positions in each period; The random function is $\left\{\begin{array}{c}{Y}_k=(A\&times;Y_{K-1})\mathrm{mod}\mathrm{D.}\\ Z_K=Y_K\mathrm{mod}{N}_{\mathrm{PDSCH}-\mathrm{BLOCK}}\end{array}\right.,$ Among them, N _PDSCH-BLOCK is the number of physical resource block positions, K is the number of subframe identifiers, the value is 0≤K≤9, Y _-1 is the identifier of UE, A and D are prime numbers, and mod is the division of two numbers The operation symbol for finding the remainder, and Z is the position index of the physical resource block. 8. A base station eNB, characterized by comprising; The eNB sending unit is used to send periodic uplink resource scheduling parameters to the user equipment UE, and the periodic uplink resource scheduling parameters are used to determine uplink resources and transmission formats of uplink data, including: uplink resources in the time domain dimension and frequency domain dimension The position on the network and the transmission format of the upstream data; The eNB receiving unit is configured to receive the uplink data sent by the UE based on the uplink resource and transmission format of the uplink data. 9. The eNB according to claim 8, wherein the eNB sending unit is used for: sending the periodic uplink resource scheduling parameter to the UE through radio resource control RRC signaling; When the periodic uplink resource scheduling parameter is updated, the updated periodic uplink resource scheduling parameter is sent to the UE through RRC reconfiguration signaling. 10. The eNB according to claim 8 or 9, further comprising: The eNB feedback unit is configured to feed back joint indication information to the UE after the eNB receiving unit receives the uplink data sent by the UE, the joint indication information includes an uplink retransmission indication and a downlink indication, and the uplink retransmission The indication is used to indicate whether there is uplink data to be retransmitted, and the downlink indication is used to indicate whether there is downlink data to be transmitted. 11. The eNB according to claim 10, wherein the eNB sending unit is further used for: Sending downlink resource scheduling parameters to the UE, the downlink resource scheduling parameters are used to determine the downlink resources and transmission format of the downlink data, including: the position of the downlink resources in the frequency domain dimension and the transmission format of the downlink data; sending downlink data to the UE based on the downlink resource and transmission format of the downlink data. 12. The eNB according to claim 11, wherein the eNB sending unit is used for: sending the downlink resource scheduling parameters to the UE through radio resource control RRC signaling; When the downlink resource scheduling parameter is updated, the updated downlink resource scheduling parameter is sent to the UE through RRC reconfiguration signaling. 13. The eNB according to claim 12, further comprising: a resource determining unit, configured to: Configuring multiple physical resource block positions for the UE through radio resource control RRC signaling; Selecting a physical resource block position for the UE as the uplink resource or downlink resource according to a random function at the plurality of physical resource block positions in each period; The random function is $\left\{\begin{array}{c}{Y}_k=(A\&times;Y_{K-1})\mathrm{mod}\mathrm{D.}\\ Z_K=Y_K\mathrm{mod}{N}_{\mathrm{PDSCH}-\mathrm{BLOCK}}\end{array}\right.,$ Among them, N _PDSCH-BLOCK is the number of physical resource block positions, K is the number of subframe identifiers, the value is 0≤K≤9, Y _-1 is the identifier of UE, A and D are prime numbers, and mod is the division of two numbers The operation symbol for finding the remainder, and Z is the position index of the physical resource block. 14. A communication method for a periodical service, comprising: Receive the periodic uplink resource scheduling parameters sent by the base station eNB, determine the uplink resources and transmission format of the uplink data according to the periodic uplink resource scheduling parameters, the periodic uplink resource scheduling parameters include: uplink resources in the time domain dimension, frequency domain The position in the dimension and the transmission format of the upstream data; sending the uplink data to the eNB based on the uplink resource and transmission format of the uplink data. 15. The method according to claim 14, wherein the periodic uplink resource scheduling parameters sent by the receiving eNB include: receiving the periodic uplink resource scheduling parameter sent by the eNB through radio resource control RRC signaling; When the periodic uplink resource scheduling parameter is updated, the updated periodic uplink resource scheduling parameter sent by the eNB is received through RRC reconfiguration signaling. 16. The method according to claim 14 or 15, further comprising: after sending the uplink data to the eNB: Receive the joint indication information fed back by the eNB, the joint indication information includes an uplink retransmission indication and a downlink indication, the uplink retransmission indication is used to indicate whether there is uplink data to be retransmitted, and the downlink indication is used to indicate whether there is Downlink data needs to be transmitted. 17. The method of claim 16, further comprising: Receive the downlink resource scheduling parameters sent by the eNB, and determine the downlink resources and transmission format of the downlink data according to the downlink resource scheduling parameters, the downlink resource scheduling parameters include: the position of the downlink resources in the frequency domain dimension and the transmission of the downlink data Format; The downlink data sent by the eNB is received based on the downlink resource and transmission format of the downlink data. 18. The method of claim 17, wherein, The downlink resource scheduling parameter also includes the position of the downlink resource in the time domain dimension. 19. The method according to claim 17 or 18, wherein the receiving the downlink resource scheduling parameters sent by the eNB includes: receiving the downlink resource scheduling parameter sent by the eNB through radio resource control RRC signaling; When the downlink resource scheduling parameter is updated, the updated downlink resource scheduling parameter sent by the eNB is received through RRC reconfiguration signaling. 20. A user equipment UE, characterized in that it comprises: The UE receiving unit is configured to receive the periodic uplink resource scheduling parameter sent by the base station eNB, and determine the uplink resource and transmission format of the uplink data according to the periodic uplink resource scheduling parameter. The periodic uplink resource scheduling parameter includes: the uplink resource is in The position in the time domain dimension, the frequency domain dimension and the transmission format of the uplink data; a UE sending unit, configured to send uplink data to the eNB based on the uplink resource and transmission format of the uplink data. 21. The UE according to claim 20, wherein the UE sending unit is configured to: receiving the periodic uplink resource scheduling parameter sent by the eNB through radio resource control RRC signaling; When the periodic uplink resource scheduling parameter is updated, the updated periodic uplink resource scheduling parameter sent by the eNB is received through RRC reconfiguration signaling. 22. The UE according to claim 20 or 21, wherein, The UE receiving unit is further configured to receive joint indication information fed back by the eNB, where the joint indication information includes an uplink retransmission indication and a downlink indication, and the uplink retransmission indication is used to indicate whether there is uplink data that needs to be retransmitted, The downlink indication is used to indicate whether there is downlink data to be transmitted. 23. The UE according to claim 22, wherein the UE receiving unit is further configured to: Receive the downlink resource scheduling parameters sent by the eNB, and determine the downlink resources and transmission format of the downlink data according to the downlink resource scheduling parameters, the downlink resource scheduling parameters include: the position of the downlink resources in the frequency domain dimension and the transmission of the downlink data Format; The downlink data sent by the eNB is received based on the downlink resource and transmission format of the downlink data. 24. The UE according to claim 23, wherein the UE sending unit is configured to: receiving the downlink resource scheduling parameter sent by the eNB through radio resource control RRC signaling; When the downlink resource scheduling parameter is updated, the updated downlink resource scheduling parameter sent by the eNB is received through RRC reconfiguration signaling.

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