CN110351025B

CN110351025B - Information feedback method, device and system

Info

Publication number: CN110351025B
Application number: CN201810302375.1A
Authority: CN
Inventors: 曹永照; 胡小群; 张芳; 周国华; 唐臻飞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2022-04-05
Anticipated expiration: 2038-04-04
Also published as: WO2019192583A1; CN110351025A

Abstract

The embodiment of the application provides an information feedback method, which comprises the steps of receiving a plurality of Transport Blocks (TBs), sending a semi-static HARQ codebook corresponding to the plurality of TBs to access network equipment, and if DTX occurs in the initial transmission of the TBs in the plurality of TBs, sending indication information to the access network equipment, wherein the indication information is used for indicating that DTX occurs in the initial transmission of the TBs in the plurality of TBs or DTX occurs in the initial transmission of one HARQ ID with the TBs. The method and the device can realize that the terminal reports the DTX information, thereby avoiding the condition of transmission failure caused by DTX and improving the success rate of data transmission.

Description

Information feedback method, device and system

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to an information feedback method, apparatus, and system.

Background

A Hybrid Automatic Repeat Request (HARQ) mechanism is a retransmission processing mechanism at the MAC layer, which can implement fast retransmission.

HARQ combines (forward error correction, FEC) and (automatic repeat request, ARQ). For the error that the FEC cannot correct, the receiving end requests the transmitting end to retransmit the data through an ARQ mechanism. The receiving end uses an error detection code, typically a CRC check, to detect whether the received data packet is erroneous. If there is no error, the receiving end will send a positive Acknowledgement (ACK) to the sending end, and after the sending end receives the ACK, the sending end will send the next data packet. If there is an error, the receiving end discards the data packet and sends a Negative Acknowledgement (NACK) to the transmitting end, and the transmitting end retransmits the same data after receiving the NACK.

By using HARQ with soft combining (HARQ with soft combining), the received error packets are stored in a HARQ buffer (buffer) and combined with the subsequently received retransmission packets, so as to obtain a more reliable packet than decoding alone (the "soft combining" process). And then decoding the combined data packet, and repeating the process of requesting retransmission and then performing soft combination if the combined data packet still fails.

However, the HARQ scheme may have a transmission failure, and how to improve the success rate of data transmission in the HARQ scheme becomes an urgent problem to be solved.

Disclosure of Invention

The application provides an information feedback method, device and system, which can improve the success rate of data transmission in an HARQ mechanism.

In a first aspect, an embodiment of the present application provides an information feedback method, which may be used for a terminal or a chip in the terminal. The method comprises the following steps: receiving a plurality of transport blocks, TBs; and sending the semi-static hybrid automatic repeat request HARQ codebooks corresponding to the plurality of TBs to the access network equipment. If DTX occurs in the initial transmission of the first TB of the multiple TBs, the semi-static HARQ codebook includes indication information, where the indication information is used to indicate that there is a TB in which DTX occurs in the initial transmission of the first TB or that DTX occurs in the initial transmission of the first TB.

The terminal or a chip in the terminal 12 judges whether the current TB is a retransmission and DTX occurs in the initial transmission, can accurately identify whether DTX occurs in the initial transmission of the current retransmission, and then sends information carrying DTX in the semi-static HARQ codebook to the access network device, thereby improving the success rate of data transmission.

In a second aspect, an embodiment of the present application provides an information feedback method, which may be used in a terminal or a chip in the terminal. The method comprises the following steps: receiving a plurality of TBs; and sending the semi-static HARQ codebooks corresponding to the TBs to the access network equipment. If DTX occurs in the initial transmission of the first TB among the multiple TBs, sending indication information to the access network device, where the indication information is used to indicate that there is a TB in which DTX occurs in the initial transmission of the first TB or that DTX occurs in the initial transmission of the first TB.

The terminal or a chip in the terminal 12 determines whether the current TB is a retransmission, and DTX occurs in the initial transmission, so that whether DTX occurs in the initial transmission of the current retransmission can be accurately identified, and then DTX information is sent to the access network device, for example, the DTX information can be carried by other information, thereby improving the success rate of data transmission.

Optionally, in the method of the first aspect or the second aspect, the indication information is sent to the access network device through the first SR resource.

Optionally, in the method of the first aspect or the second aspect, the first preamble corresponding to the indication information is sent to the access network device.

Optionally, in the method of the first aspect or the second aspect, the indication information includes an identifier of a first HARQ process, and the first TB is a TB corresponding to the first HARQ process.

Optionally, in the method of the first aspect or the second aspect, if the modulation and coding scheme MCS corresponding to the first TB or the redundancy version RV corresponding to the first TB of the multiple TBs indicates retransmission and the new data indication NDI corresponding to the first TB is flipped, the first TB is DTX.

Optionally, the method in the first aspect or the second aspect further includes receiving, from the access network device, initial transmission of data corresponding to the initial transmission of the first TB.

In a third aspect, an embodiment of the present application provides an information feedback method, where the method may be used in an access network device or a chip in the access network device. The method comprises the following steps: transmitting a plurality of transport blocks, TBs, to a terminal; receiving a semi-static hybrid automatic repeat request (HARQ) codebook corresponding to the TBs from the access network equipment; if DTX occurs in the initial transmission of the first TB of the multiple TBs, the semi-static HARQ codebook includes indication information, where the indication information is used to indicate that there is a TB in which DTX occurs in the initial transmission of the first TB or that DTX occurs in the initial transmission of the first TB.

The access network device 11 or a chip in the access network device 11 receives the indication information of DTX, and can learn which TBs of the terminal 12 have DTX, so as to send initial transmission of data to the terminal 12, thereby improving the success rate of data transmission.

In a fourth aspect, an embodiment of the present application provides an information feedback method, where the method may be used in an access network device or a chip in the access network device. The method comprises the following steps: transmitting a plurality of transport blocks, TBs, to a terminal; receiving a semi-static hybrid automatic repeat request (HARQ) codebook corresponding to the TBs from the access network equipment; if DTX occurs in the initial transmission of the first TB among the plurality of TBs, receiving indication information from the access network device, where the indication information is used to indicate that there is a TB in which DTX occurs in the initial transmission of the first TB or that DTX occurs in the initial transmission of the first TB.

Optionally, in the method of the third aspect or the fourth aspect, the indication information is received from the access network device through the first SR resource.

Optionally, in the method of the third aspect or the fourth aspect, a first preamble corresponding to the indication information is received from the access network device.

Optionally, in the method of the third aspect or the fourth aspect, the indication information includes an identifier of a first HARQ process, and the first TB is a TB corresponding to the first HARQ process.

Optionally, in the method of the third aspect or the fourth aspect, if the modulation and coding scheme MCS corresponding to the first TB or the redundancy version RV corresponding to the first TB in the multiple TBs indicates retransmission and the new data indication NDI corresponding to the first TB is flipped, the first TB is DTX.

Optionally, in the method of the third aspect or the fourth aspect, the method further includes sending initial transmission of data corresponding to the initial transmission of the first TB to the terminal.

In a fifth aspect, an embodiment of the present application provides an apparatus, including a memory for storing a computer program and a processor for calling the computer program from the memory and executing the computer program, so that the apparatus performs the method of the first, second, third or fourth aspect.

In a sixth aspect, the present application provides a computer program product, which includes a program that, when executed, causes the method of the first, second, third or fourth aspect to be performed.

Drawings

In order to illustrate the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from these drawings by a person skilled in the art without inventive exercise.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 2A is a schematic diagram of a retransmission method in an HARQ mechanism according to an embodiment of the present application;

fig. 2B is a schematic diagram of a retransmission method in an HARQ mechanism according to an embodiment of the present application;

fig. 3 is a schematic diagram of a data transmission method according to an embodiment of the present application;

fig. 3A is a schematic diagram of a method for identifying DTX according to an embodiment of the present application;

fig. 3B is a schematic diagram of another method for identifying DTX according to an embodiment of the present application;

fig. 4A is a schematic diagram of a method for reporting DTX and issuing data with DTX according to an embodiment of the present application;

fig. 4B is a schematic diagram of a semi-static HARQ codebook according to an embodiment of the present application;

fig. 4C is a schematic diagram of another semi-static HARQ codebook according to an embodiment of the present application;

fig. 4D is a schematic diagram of another semi-static HARQ codebook according to an embodiment of the present application;

fig. 5A is a schematic diagram of a method for reporting DTX and issuing data with DTX according to an embodiment of the present application;

fig. 5B is a schematic diagram of another semi-static HARQ codebook according to an embodiment of the present application;

fig. 5C is a schematic diagram of another semi-static HARQ codebook according to an embodiment of the present application;

fig. 5D is a schematic diagram of another semi-static HARQ codebook according to an embodiment of the present application;

fig. 6A is a schematic diagram of a method for reporting DTX and issuing data with DTX according to an embodiment of the present application;

fig. 6B is a schematic diagram of another semi-static HARQ codebook according to an embodiment of the present application;

fig. 7 is a schematic diagram of another method for reporting DTX and issuing data with DTX according to an embodiment of the present application;

fig. 8 is a schematic diagram of another method for reporting DTX and issuing data with DTX according to an embodiment of the present application;

fig. 9 is a schematic diagram of another method for reporting DTX and issuing data with DTX according to an embodiment of the present application;

fig. 10A is a schematic diagram of another method for reporting DTX and issuing data with DTX according to an embodiment of the present application;

fig. 10B is a schematic diagram of another semi-static HARQ codebook according to an embodiment of the present application;

fig. 10C is a schematic diagram of another semi-static HARQ codebook according to an embodiment of the present application;

FIG. 11 is a schematic view of an apparatus provided in an embodiment of the present application;

FIG. 12 is a schematic view of another apparatus provided in accordance with an embodiment of the present application;

fig. 13 is a schematic view of another apparatus provided in the embodiments of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the drawings in the present application.

The technical scheme of the embodiment of the application can be applied to the communication system shown in fig. 1. The communication system comprises an access network device 11 and a terminal 12, the terminal 12 communicating with the access network device 11. It should be noted that the inclusion of the access network device 11 and the terminal 12 in the communication system as shown in fig. 1 is merely an example, and the access network device 11 may communicate with a plurality of terminals.

The communication system may be a communication system supporting a fourth generation (4G) access technology, such as a Long Term Evolution (LTE) access technology; alternatively, the communication system may also be a communication system supporting a fifth generation (5G) access technology, such as a New Radio (NR) access technology; alternatively, the communication system may be a communication system supporting a third generation (3G) access technology, such as a Universal Mobile Telecommunications System (UMTS) access technology; or the communication system may also be a communication system of a second generation (2G) access technology, such as a global system for mobile communications (GSM) access technology; alternatively, the communication system may also be a communication system supporting a plurality of wireless technologies, for example, a communication system supporting an LTE technology and an NR technology. In addition, the communication system may also be adapted for future-oriented communication technologies.

The access network device 11 in fig. 1 is a device for supporting a terminal to access a communication system, and may be, for example, a Base Transceiver Station (BTS) and a Base Station Controller (BSC) in a 2G access technology communication system, a node b (node b) and a Radio Network Controller (RNC) in a 3G access technology communication system, an evolved node b (eNB) in a 4G access technology communication system, a next generation base station (neighbor node b) in a 5G access technology communication system, a Transmission Reception Point (TRP), a relay node (relay node), an Access Point (AP), and the like.

The terminal 12 of fig. 1 may be a device that provides voice or data connectivity to a user, and may also be referred to as User Equipment (UE), mobile station (mobile station), subscriber unit (subscriber unit), station (station), Terminal Equipment (TE), or the like. The terminal may be a cellular phone (cellular phone), a Personal Digital Assistant (PDA), a wireless modem (modem), a handheld device (hand-held), a laptop computer (laptop computer), a cordless phone (cordless phone), a Wireless Local Loop (WLL) station, a tablet (pad), or the like. With the development of wireless communication technology, all devices that can access a communication system, can communicate with a network side of the communication system, or communicate with other objects through the communication system may be terminals in the embodiments of the present application, such as terminals and automobiles in intelligent transportation, home devices in smart homes, power meter reading instruments in smart grid, voltage monitoring instruments, environment monitoring instruments, video monitoring instruments in smart security networks, cash registers, and so on. In the embodiment of the present application, the terminal may communicate with an access network device, such as access network device 111 or access network device 112. Communication may also be performed between multiple terminals. The terminals may be stationary or mobile.

In the above communication system, when the access network device 11 and the terminal 12 adopt the HARQ mechanism for communication, a retransmission failure may occur, which may result in a decrease in the success rate of data transmission

The access network device 11 sends multiple TBs to the terminal 12 through multiple HARQ processes, and the terminal 12 sends feedback to the access network device 11 in a semi-static codebook manner after receiving the multiple TBs.

It should be noted that, one HARQ ID may include multiple HARQ processes, for example, 2, 3 or more HARQ processes, and for convenience of description, in this embodiment, it is described that one HARQ ID includes 1 HARQ process, and it is known to those skilled in the art that the content in this embodiment is also applicable to a case where one HARQ ID includes multiple HARQ processes.

This is described below in conjunction with fig. 2A and 2B.

The HARQ process for HARQ ID 6 sends TB1 to terminal 12, the HARQ process for HARQ ID 7 sends TB4 to terminal 12, and the HARQ process for HARQ ID8 sends TB7 to terminal 12. After receiving TB1, the terminal 12 performs CRC check, the check is successful, and the feedback of TB1 in the semi-static HARQ codebook 1 is ACK; after receiving TB4, the terminal 12 performs CRC check, the feedback of TB3 in the semi-static HARQ codebook 1 is ACK, and after receiving TB7, the terminal 12 performs CRC check, and the feedback of TB7 in the semi-static HARQ codebook 1 is ACK.

After access network device 11 receives semi-static HARQ codebook 1, because feedback of TB1, TB4, and TB7 are all ACKs, HARQ process of HARQ ID 6 sends new data TB3 to terminal 12, HARQ process of HARQ ID 7 sends new data TB5 to terminal 12, and HARQ process of HARQ ID8 sends new data TB to terminal 12. Discontinuous Transmission (DTX) occurs in scheduling of the new data TB3, that is, the terminal 12 does not receive DCI of the TB3, and the terminal 12 cannot acquire the time-frequency resource of the TB3, so that the terminal 12 does not receive the TB3, and the feedback of the TB3 in the semi-static HARQ codebook 2 is NACK. After receiving the TB5, the terminal 12 performs CRC check, and the feedback of the TB5 in the semi-static HARQ codebook 2 is ACK; and after receiving the TB8, the terminal 12 performs CRC check, the check is successful, and the feedback of the TB8 in the semi-static HARQ codebook 2 is ACK.

After receiving the semi-static HARQ codebook 2, the access network device 11 sends the 1 st retransmission of the TB3 to the terminal 12 due to the fact that the feedback of the TB3 is NACK; since the feedback of both TB5 and TB8 is ACK, the HARQ process of HARQ ID 7 may send new data TB6 to terminal 12, and the HARQ process of HARQ ID8 may send new data TB9 to terminal 12. After the terminal 12 receives the 1 st retransmission of the TB3, since the terminal 12 does not receive the initial transmission of the TB3, the 1 st retransmission CRC check on the TB3 fails, and the feedback of the TB3 in the semi-static HARQ codebook 3 is NACK; after receiving the TB6, the terminal 12 performs CRC check, and the feedback of the TB6 in the semi-static HARQ codebook 3 is ACK; DTX occurs for the scheduling of new data TB3, when the feedback of TB3 in semi-static HARQ codebook 2 is NACK.

From fig. 2A, it can be seen that after DTX occurred in the initial transmission of TB3, the 1 st retransmission of TB3 failed, and since terminal 12 did not receive the initial transmission of TB3, the subsequent retransmission of TB3 would fail.

In the related art, a scheme for coping with retransmission failure is provided. After receiving the retransmission, the terminal 12 uses the TBs of the TB that was received the last time by the same HARQ process to perform CRC check. When terminal 12 receives the 1 st retransmission of TB3, terminal 12 uses the same HARQ process, and the TBs of the TB that was received most recently performs a CRC check on TB3, i.e., terminal 12 uses the TBs of TB1 to perform a CRC check on TB 3.

This solution has the following problems: TB1 and TB3 are two different TBs, the TBs of TB1 may be different from that of TB3, and the CRC check of terminal 12 on TB3 still fails when the TBs are different.

The embodiment of the application provides a scheme for improving the data success rate in a HARQ semi-static feedback mechanism. The scheme comprises two parts, wherein the first part is DTX identification, and the terminal 12 identifies whether DTX occurs in the initial transmission scheduling during retransmission or whether DTX occurs in the initial transmission scheduling; the second part is reporting of DTX and issuing of data with DTX, the terminal 12 reports the identified DTX to the access network device 11, the access network device 11 locates the data with DTX and sends the data with DTX to the terminal 12 in an initial transmission manner, thereby solving the problem of failure of subsequent retransmission caused by DTX occurrence in initial transmission scheduling.

It should be noted that, in the embodiment of the present application, DTX occurs in a TB, which may be understood as that DTX occurs in scheduling of the TB or a terminal does not receive DCI of the TB. The semi-static HARQ codebook is a feedback mode in the HARQ mechanism, in the feedback mode, the terminal feeds back the receiving state of the TB to the access network device in a semi-static manner, and the semi-static HARQ codebook may be referred to as a semi-static HARQ codebook or a semi-static codebook. The MCS, RV, or NDI of the TB may be understood as the MCS, RV, or NDI of the TB in the DCI information corresponding to the TB.

A first implementation of DTX identification according to an embodiment of the present application is described below with reference to fig. 3.

S301: the access network apparatus 11 transmits Downlink Control Information (DCI) to the terminal 12.

Optionally, the terminal may save the DCI.

For example, the terminal 12 may receive DCI from the access network apparatus 11 through a Physical Downlink Control Channel (PDCCH).

The DCI includes resource allocation information, a hybrid automatic repeat request (HARQ) Identifier (ID), and control information of a data block (TB) including a Modulation and Coding Scheme (MCS), a New Data Indicator (NDI), and a Redundancy Version (RV).

For example, the HARQ ID of a HARQ process is 6, the current transport block is TB3, the terminal 12 receives DCI3 from the access network apparatus 11, and the DCI3 may include the following information:

(1) resource allocation information of TB3, including allocation information of TB3 in time domain and frequency domain;

(2)HARQ ID 6；

(3) the control information of TB3 includes MCS 29, NDI 1, RV 1, for example.

It should be noted that the DCI format is not limited in the embodiment of the present application, and for example, the DCI format may be 1, 1A, 1B, 1C, 1D, 2, 2A, 2B, or 2C.

Some DCI supporting the space division multiplexing DCI format may include control information of more than 1 TB, for example, DCI having a DCI format of 2, 2A, 2B, or 2C may include control information of multiple TBs, where the multiple TBs may be transmitted using different HARQ processes but use the same HARQ ID. The HARQ process of each TB may be directly indicated by the HARQ ID or indirectly indicated by the HARQ ID + TB number.

For convenience of description, the embodiment of the present application takes the example that the DCI3 includes control information of the TB3, and it is known to those skilled in the art that the embodiment of the present application is also applicable to the case that the DCI includes control information of more than 1 TB.

S302: the access network device 11 sends a TB to the terminal 12 on the corresponding resource according to the resource allocation information in the received DCI.

For example, the access network device 11 may send a TB to the terminal 12 on a corresponding resource according to resource allocation information in the received DCI through a Physical Downlink Shared Channel (PDSCH).

Accordingly, the terminal 12 may receive the TB from the access network apparatus 11 on the resource indicated by the DCI.

If some DCI supporting the space division multiplexing DCI format includes control information of 1 or more TBs, the access network apparatus 11 transmits 1 or more TBs to the terminal on the resource indicated by the DCI.

It should be noted that the present embodiment may include multiple steps S301 to S302, that is, the terminal 12 may receive multiple DCIs and then carry feedback of multiple TBs indicated by the DCI in the semi-static codebook.

S303: the terminal 12 determines to schedule the TB in which DTX occurred.

The embodiment of the present application provides a method for identifying DTX, where the method determines each TB in a semi-static HARQ codebook, and the following description takes the determination of one TB as an example, as shown in fig. 3A, first determines whether the TB is a retransmission, and then determines whether DTX occurs in initial scheduling.

Regarding to determining whether the TB is a retransmission, an embodiment of the present application provides a first implementation manner, where the first implementation manner may include:

firstly, the terminal 12 acquires Quadrature Amplitude Modulation (QAM) information, and determines whether the MCS or RV of the current TB indicates retransmission by combining the QAM information, and if the retransmission is indicated, the TB is a retransmission; if not, it indicates that the current TB is not retransmission.

The terminal 12 acquires QAM information, for example, the terminal 12 acquires QAM information through an RRC reconfiguration message, for example, through cellgroupconfig information in the RRC reconfiguration message, where the RRC reconfiguration message may be in a user access process or a handover process; or the terminal 12 can determine the QAM information according to the MCS and the mapping table of MCS and QAM.

It should be noted that, the communication system may configure MCS for initial transmission and retransmission under each QAM, and MCS for initial transmission and retransmission may be different under different QAMs. Here, whether the current TB is a retransmission may be determined according to the QAM information of the terminal 12 and the MCS of the current TB, and the value of the QAM and the value of the MCS used for the retransmission are not limited in the embodiments of the present application. In addition, the communication system may configure an RV for initial transmission and an RV for retransmission, where it may determine whether the current TB is a retransmission according to the RV information of the terminal 12.

For example, if QAM is 64, terminal 12 determines whether the MCS of the current TB is 29-31, if so, the MCS indicates retransmission; if QAM is 256, the terminal 12 determines whether the MCS of the current TB is 28-31, if so, the MCS indicates retransmission;

or, the terminal 12 determines whether the RV of the current TB is greater than or equal to 1, and if so, the RV indicates retransmission.

For example, terminal 12 has a QAM of 64 and a TB3 MCS of 29, indicating that the TB3 MCS indicates retransmission; alternatively, the RV of TB3 is 1, the RV of TB3 indicates retransmission, and TB3 is retransmission.

Regarding to determining whether the TB is a retransmission, an embodiment of the present application provides a second implementation manner, where the first implementation manner may include:

first, if a terminal 12 does not receive any TB in the semi-static HARQ codebook, the terminal 12 records information related to the unreceived TB, for example, records HARQ process number, TB number, and the like of the unreceived TB.

For example, terminal 12 does not receive the initial transmission of TB3 in the last semi-static HARQ codebook, and terminal 12 stores the information about the initial transmission of TB3, such as HARQ ID 6 and TB 3.

Secondly, the terminal 12 determines the information of the TB transmitted last time in the HARQ process of the current TB, and if the TB terminal 12 transmitted last time does not receive the information, the current TB is a retransmission.

For example, after the terminal 12 receives TB3, it determines that the TB transmitted by the same HARQ process for the next time is TB3, and the terminal 12 does not receive TB3, so that the current TB3 is a retransmission.

Regarding DTX occurrence in scheduling of initial transmission, an embodiment of the present application provides an implementation manner:

when the TB is retransmitted, the terminal 12 determines whether the NDI of the current TB is the same as the NDI of the TB received by the same HARQ process for the last time, and if not, indicates that DTX occurs in the initial transmission scheduling of the TB; if the same, it indicates that DTX does not occur in the initial transmission scheduling of the TB. When the NDI of the current TB is different from the NDI of the TB received by the same HARQ process for the last time, it may be understood that the NDI is not flipped, and when the NDI of the current TB is the same as the NDI of the TB received by the same HARQ process for the last time, it may be understood that the NDI is not flipped.

The terminal 12 determines whether the NDI of the current TB is the same as the NDI of the TB that is received by the same HARQ process for the last time, where the NDI of the current TB may be obtained from DCI corresponding to the current TB; the NDI of the TB that is received by the same HARQ process the last time may be obtained from the DCI corresponding to the TB that is received by the same HARQ process the last time, for example, when the terminal 12 receives the DCI of the same HARQ process the last time, the terminal stores the DCI in the terminal 12, and the terminal receives the TB on the corresponding resource according to the resource allocation information of the DCI and stores the received TB in the terminal 12.

For example, the current TB is TB3, and according to DCI3, the NDI of TB3 is 1. Belonging to the same HARQ process as TB3, the TB received by terminal 12 the last time is TB1, terminal 12 obtains DCI of TB1, which is DCI1, DCI1 is 0, and the NDI of TB3 is different from the NDI of TB 1.

The NDI of the current TB is different from the TB received by the same HARQ process for the last time, which indicates that the data transmitted by the current TB is different from the data transmitted by the TB received by the same HARQ process for the last time, and the current TB is a retransmission. It is described that the access network device 11 does not send the current TB to the terminal 12 for the first time, that is, before sending the current TB to the terminal 12 through the same HARQ process, the access network device 11 sends DCI and TB to the terminal 12, where the TB is an initial transmission of the current TB (an MCS or an RV in the DCI of the TB indicates the initial transmission, and an NDI of the TB is different from an NDI of a TB that is received by the same HARQ process for the last time), but the terminal 12 does not receive the DCI, so that the TB cannot be received according to a resource indicated by the DCI, that is, DTX occurs when the initial transmission of the current TB is scheduled downlink.

For example, since the NDI of TB3 is 1 and the NDI of TB1 is 0, it indicates that TB3 and TB1 transmit different data, where TB1 was received by terminal 12 the last time in the same HARQ process. However, both MCS and RV of TB3 indicate retransmission. It is noted that, between TB1 and TB3, access network device 11 may send an initial transmission of TB3 to terminal 12 (NDI of initial transmission of TB3 is 1, MCS is 0-28, and RV is 0), but terminal 12 does not receive the initial transmission DCI of TB3, which results in that terminal 12 cannot receive the initial transmission of TB3 according to the resource indicated by the DCI, that is, DTX occurs when the initial transmission of downlink scheduling TB 3.

When the terminal 12 receives the TB, in combination with the MCS and RV, one or more than one of the information and NDI transmitted last time in the same HARQ process stored by the terminal 12 are put in, and it is determined whether the retransmission is performed and DTX occurs in the initial transmission, so that it can be accurately identified whether DTX occurs in the initial transmission of the current retransmission.

The embodiment of the present application provides another method for identifying DTX, as shown in fig. 3B, the method determines each TB in a semi-static HARQ codebook, and determines whether the terminal 12 does not receive the TB, and if the terminal 12 does not receive the TB, the scheduling of the TB is performed with DTX.

By determining the unreceived TB as the scheduled DTX occurrence in the semi-static HARQ codebook by the terminal 12, the terminal 12 can recognize the DTX occurrence in the initial transmission, thereby avoiding unnecessary retransmission and saving wireless network resources.

S304: terminal 12 sends the semi-static HARQ codebook and DTX indication to access network device 11.

S305: the access network device 11 sends an initial transmission of data where DTX occurred to the terminal 12.

Semi-static HARQ codebook the description of fig. 4A to 10C below corresponds to the steps S304-S305 in fig. 3.

The following describes, with reference to fig. 4A, a first implementation manner of reporting DTX and issuing data where DTX occurs in the embodiment of the present application, which may be used in the first implementation manner or the second implementation manner of recognizing DTX.

S401: terminal 12 sends a semi-static HARQ codebook, including a DTX indication, to access network device 11. The semi-static HARQ codebook may be transmitted on PUCCH or PUSCH.

Fig. 4B illustrates a schematic diagram of the semi-static HARQ codebook:

the semi-static HARQ codebook may include n bits (bits), n being an integer greater than or equal to 2, where:

(1) n-1 bits correspond to the feedback of n-1 TBs, and the feedback of each TB occupies 1 bit;

the feedback for each TB may be 0 or 1, e.g., 0 for NACK and 1 for ACK.

If the first embodiment (fig. 3A) of identifying DTX is adopted, the terminal 12 may refer to the content in fig. 3A for determining feedback of each TB, and details thereof are not repeated herein.

If the second embodiment (fig. 3B) of identifying DTX is adopted, the terminal 12 may refer to the content in fig. 3B for determining the feedback of each TB, and details thereof are not repeated herein.

Wherein the n-1 TBs belong to n-1 HARQ processes, respectively, and at least 2 HARQ processes of the n-1 HARQ processes may use the same HARQ Identity (ID) or may use different HARQ IDs.

(2) 1bit is a DTX indication. As an optional design, the access network device 11 and the terminal 12 may configure, through an algorithm, a bit index (index) of feedback of each TB in the semi-static HARQ codebook and a bit index indicated by DTX; the terminal 12 may fill the feedback of the corresponding TB and the DTX indication into the corresponding bit index according to the algorithm, and send the semi-static HARQ codebook to the access network device 11, and after the access network device 11 receives the semi-static HARQ codebook, the feedback of each TB and the DTX indication may be obtained through the algorithm.

For example, the access network device 11 and the terminal 12 configure according to an algorithm, the 1 st bit in the semi-static HARQ codebook is used for feeding back the TB3 of the HARQ ID 6, the 2 nd bit is used for feeding back the TB6 of the HARQ ID 7, the 3 rd bit is used for feeding back the TB9 of the HARQ ID8, and the 4 th bit is a DTX indication.

If the first embodiment (fig. 3A) for identifying DTX is adopted, the terminal 12 determines whether the TB is stored as a retransmission after receiving the TB each time, and DTX occurs in the scheduling of the initial transmission. Reference may be made to the content of fig. 3A, which is not described in detail herein.

If at least one TB exists in the n TBs in the semi-static HARQ codebook, the retransmission is the retransmission and the DTX occurs during the initial transmission in the scheduling, the DTX indication indicates that the DTX occurs, for example, the DTX indication is 1; if at least one TB among the n TBs in the semi-static HARQ codebook is not retransmitted and DTX does not occur in the initial transmission during scheduling, the DTX indication indicates that DTX does not occur, for example, the DTX indication is 0.

As shown in fig. 2A, the terminal 12 receives TB3 with HARQ ID 6, fails CRC check, and recognizes that DTX occurs when primary transmission scheduling of TB3, and the recognition process may refer to the description in fig. 3A; terminal 12 receives TB6 of HARQ ID 7, and the CRC check is successful; terminal 12 does not receive TB9 for HARQ ID 8. Since there is TB3 being a retransmission and DTX occurred in the scheduling of the initial transmission of TB3, the semi-static HARQ codebook may be as shown in fig. 4C.

If the second embodiment (fig. 3B) of identifying DTX is adopted, the terminal 12 determines whether DTX occurs in each TB in the semi-static HARQ codebook, which may specifically refer to fig. 3B and is not described herein again.

If at least one TB in the semi-static feedback codebook generates DTX, DTX indication indicates that DTX occurs, for example, the DTX indication is 1; if the semi-static HARQ codebook does not have the initial TB that is not received by the terminal 12, the DTX indication indicates that DTX does not occur, for example, the DTX indication is 0.

As shown in fig. 2A, terminal 12 receives TB3 of HARQ ID 6, and the CRC check fails; terminal 12 receives TB6 of HARQ ID 7, and the CRC check is successful; terminal 12 does not receive TB9 for HARQ ID 8. Since terminal 12 does not receive TB9, TB9 is an initial transmission, DTX indication indicates that DTX occurred, e.g., DTX indication is 1, and the semi-static HARQ codebook may be as shown in fig. 4D.

S402: after receiving the semi-static HARQ codebook, the access network device 11 determines whether the DTX indication indicates that DTX occurs, and if the DTX indication indicates that DTX occurs, the process proceeds to S403.

For example, the access network device 11 receives the semi-static codebook as shown in fig. 4C, obtains the DTX indication as 1, and proceeds to S403.

S403: the access network device 11 determines the TB that corresponds to the DTX indication.

If the first embodiment (fig. 3A) for identifying DTX is adopted, the TB matching the DTX indication is: the feedback is a retransmission of NACK. Since the DTX indication is 1, it is stated that DTX may occur during scheduling for initial transmission of at least 1 TB in TBs of the semi-static HARQ codebook, and the access network device 11 needs to locate the TB whose scheduling for initial transmission may occur DTX.

As an embodiment, the access network device 11 first determines the TB with NACK feedback; then, the scheduling information on the TB in the access network device 11 is read, and whether the TB is a retransmission or not is determined.

For example, TB3 and TB9 feed back as NACK, and the access network device 11 can know that TB3 is retransmission according to the scheduling information, so TB3 conforms to the DTX indication; the TB9 feeds back NACK, and the access network device 11, according to the scheduling information, TB9 is newly transmitted, not retransmitted, so TB9 does not comply with the DTX indication.

If the second embodiment (fig. 3B) for identifying DTX is adopted, the TB matching the DTX indication is: the feedback is the initial transmission of NACK, and the access network device 11 sends the TB to the terminal 12.

Since the DTX indication is 1, it is indicated that DTX may occur in at least 1 TB of TBs of the semi-static HARQ codebook during scheduling, and the access network apparatus 11 needs to locate the TB where DTX may occur.

As an implementation manner, the access network device 11 first determines that the feedback is initial transmission of NACK, and then reads that the access network device 11 determines whether the access network device 11 has sent the initial transmission to the terminal 12 according to the scheduling information.

It should be noted that, the access network device 11 sends the initial transmission to the terminal 12, including that the access network device 11 sends the DCI corresponding to the initial transmission to the terminal 12 in the scheduling of the initial transmission corresponding to the semi-static HARQ codebook.

For example, TB3 and TB9 feedback are NACKs, TB3 is a retransmission, so TB3 does not comply with DTX indication; the TB9 feeds back NACK, and for new transmission, the access network device 11 knows that the access network device 11 sends TB9 to the terminal 12 according to the scheduling information, so the TB9 conforms to the DTX indication.

S404: the access network device 11 sends data corresponding to the TB conforming to the DTX indication to the terminal 12 in an initial transmission manner.

As an implementation manner, the access network device 11 obtains data corresponding to the TB that meets the DTX indication according to the scheduling information of the access network device 11, and sends the data corresponding to the TB to the terminal 12 in an initial transmission manner, for example, re-generate the initial transmission and generate the initial DCI, send the initial DCI, and send the initial transmission.

It should be noted that, if the first embodiment (fig. 3A) for identifying DTX is adopted, the TB conforming to the DTX indication is a retransmission fed back as NACK, and the corresponding data may be initial data of the retransmission, that is, complete data to be transmitted in the scheduling process; if the second embodiment (fig. 3B) for identifying DTX is adopted, the TB conforming to the DTX indication is an initial transmission fed back as NACK, and the corresponding data may be data corresponding to the initial transmission, that is, complete data required to be transmitted in the scheduling process.

Generating the first-transmission DCI and the first-transmission DCI, comprising:

turning the originally transmitted NDI over the TB which is sent by the same HARQ process of the access network equipment 11 for the last time;

recalculating the TBS of the initial transmission;

and calculating the initial MCS according to the recalculated TBS. If the QAM of the terminal 12 is 64, the initial MCS is 0-28; if the QAM of the terminal 12 is 256, the initial MCS is 0-27.

The access network device 11 may obtain data corresponding to the TB that matches the DTX indication according to the scheduling information.

When the access network device 11 regenerates the initial transmission, it may generate a plurality of initial transmissions according to the scheduling needs of the access network device 11, where the plurality of initial transmissions cover data corresponding to TBs that meet the DTX indication, or generate 1 initial transmission, where the initial transmission covers data corresponding to TBs that meet the DTX indication, that is, the access network device 11 may issue data corresponding to TBs that meet the DTX indication in an initial transmission manner, but the embodiment of the present application does not limit the manner issued by the access network device 11, so that the access network device may select an appropriate manner according to the scheduling needs, and flexibility is improved.

If the first embodiment (fig. 3A) of DTX identification is adopted, an implementation manner is also provided: the access network device 11 obtains the initial transmission of the TB that meets the DTX indication according to the scheduling information of the access network device 11, for example, the access network device 11 stores the initial transmission of the TB that meets the DTX indication, and sends the initial transmission and the initially transmitted DCI to the terminal 12.

For example, in S403, the access network device 11 determines that TB3 is a TB conforming to the DTX indication, and the access network device 11 acquires, according to the scheduling information, the DCI for the initial transmission of TB3 and the DCI for the initial transmission of TB3 that are stored in the access network device 11, and sends the DCI for the initial transmission of TB3 and the DCI for the initial transmission of TB3 to the terminal 12.

The embodiment can enable the access network device to only acquire the initial transmission download stored in the access network device 11 and send the initial transmission download to the terminal 12 without regenerating the initial transmission, thereby solving the problem of retransmission failure and reducing the burden of the access network device 11. If the second embodiment (fig. 3B) of DTX identification is adopted, an implementation manner is also provided:

access network device 11 obtains a TB that matches the DTX indication according to the scheduling information of access network device 11, for example, access network device 11 stores the TB that matches the DTX indication, and sends the TB and DCI of the TB to terminal 12.

For example, in S403, the access network device 11 determines TB9 as a TB conforming to the DTX indication, and the access network device 11 acquires the DCI of TB9 and TB9 according to the scheduling information and sends the DCI of TB9 and TB9 to the terminal 12.

S405: the access network device 11 sends the data corresponding to the TB with the remaining feedbacks of NACK in the semi-static HARQ codebook to the terminal 12 in a retransmission manner.

In the semi-static feedback codebook, the rest TBs that feedback as NACK are not compliant with the DTX indication, and the access network device 11 may send the TB again to the terminal 12 in a retransmission manner.

If the first embodiment (fig. 3A) of identifying DTX is adopted, for example, TB9 feeds back NACK, and does not comply with DTX indication, the access network device 11 transmits TB9 to the terminal 12 in a retransmission manner.

If the second embodiment (fig. 3B) of identifying DTX is adopted, for example, TB3 feeds back NACK, and does not conform to the DTX indication, the access network device 11 sends TB3 to the terminal 12 in a retransmission manner.

By adding 1bit in the semi-static HARQ codebook, the resource of the semi-static HARQ codebook is saved, the problem of retransmission failure is solved, and the success rate of data is improved.

A second implementation manner of reporting DTX and issuing data where DTX occurs in the embodiment of the present application is described below with reference to fig. 5A, and may be used in the first implementation manner or the second implementation manner of identifying DTX.

S501: terminal 12 sends a semi-static HARQ codebook to access network device 11 including an indication of whether DTX occurred for the scheduling of each HARQ ID.

The semi-static HARQ codebook may be transmitted on PUCCH or PUSCH.

Fig. 5b illustrates a schematic diagram of the semi-static HARQ codebook:

the semi-static HARQ codebook may include n bits, where n is an integer greater than or equal to 2, where:

(1) the m bits correspond to the feedback of the m TBs, the feedback of each TB occupies 1bit, and n is more than or equal to 2 min and less than or equal to n-1;

the feedback for each TB may be 0 or 1, e.g., 0 for NACK and 1 for ACK.

The m TBs belong to m HARQ processes, respectively, and at least 2 HARQ processes of the m HARQ processes may use the same HARQ ID, or the m HARQ processes all use different HARQ IDs.

(2) The n-m bits correspond to the feedback of the n-m HARQ IDs, the feedback of each HARQ ID occupies 1 bit.

The m TBs use HARQ IDs of n-m.

The feedback for each HARQ ID may be 1 or 0, for example, 1 represents that DTX occurred by scheduling for the HARQ ID, and 0 represents that DTX did not occur by scheduling for the HARQ ID.

As an embodiment, the access network device 11 and the terminal 12 may configure, through an algorithm, the bit index fed back by each TB and the bit index fed back by each HARQ ID in the semi-static HARQ codebook; the terminal 12 may fill the feedback of the corresponding TB and the feedback of the corresponding HARQ ID into the corresponding bit index according to the algorithm, and send the semi-static HARQ codebook to the access network device 11, and after the access network device 11 receives the semi-static HARQ codebook, the feedback of each TB and the feedback of each HARQ ID may be obtained through the algorithm.

For example, according to the algorithm configuration, the access network device 11 and the terminal 12, the 1 st bit in the semi-static HARQ codebook is used for feeding back the TB3 feedback of the HARQ ID 6, the 2 nd bit is used for feeding back the TB6 of the HARQ ID 7, the 3 rd bit is used for feeding back the TB9 of the HARQ ID8, the 4 th bit is used for feeding back the HARQ ID 6, the 5 th bit is used for feeding back the HARQ ID 7, and the 6 th bit is used for feeding back the HARQ ID 8.

In the first embodiment (fig. 3A) for identifying DTX, the meaning of DTX occurring in the scheduling of HARQ ID is that there is a TB corresponding to HARQ ID, the TB is a retransmission, and DTX occurs in the scheduling of initial transmission.

One HARQ ID may correspond to 1 or more TBs, and in this case, if at least one of the TBs is a retransmission and DTX occurs in the initial transmission schedule, DTX occurs in the scheduling of the HARQ ID.

After receiving the TB each time, the terminal 12 determines whether the TB is a retransmission, and DTX occurs in the scheduling of the initial transmission. Reference may be made to the content of fig. 3A, which is not described in detail herein.

For example, terminal 12 receives TB3 of HARQ ID 6, the CRC check fails, and recognizes that TB3 at HARQ ID 6 is a retransmission and DTX occurred at its initial transmission; terminal 12 receives TB6 of HARQ ID 7, and the CRC check is successful; terminal 12 does not receive TB9 for HARQ ID 8. Then DTX occurred for the scheduling of HARQ ID 6 and the semi-static HARQ codebook for terminal 12, may be as shown in fig. 5C.

In the second embodiment (fig. 3B) for identifying DTX, the meaning of DTX occurrence in scheduling of HARQ ID is that there is a TB corresponding to HARQ ID, and DTX occurs in scheduling of this TB.

The terminal 12 determines whether DTX occurs in TB scheduling, which may refer to the content in fig. 3B and is not described herein again.

For example, terminal 12 receives TB3 for HARQ ID 6, and the CRC check fails; terminal 12 receives TB6 of HARQ ID 7, and the CRC check is successful; terminal 12 does not receive TB9 of HARQ ID8, TB9 is the initial transmission, and terminal 12 determines that DTX occurs in the scheduling of TB 9. Then the semi-static HARQ codebook for terminal 12 may be as shown in fig. 5d (010001).

By indicating whether DTX occurs in each of n-m HARQ IDs, and because n-m is more than or equal to 1 and less than or equal to m, compared with the method of feeding back m TBs whether DTX occurs through m bits respectively, the length of the semi-static HARQ codebook can be saved, and the communication resource for sending the semi-static HARQ codebook can be saved.

S502: the access network apparatus 11 determines the HARQ ID at which DTX is scheduled to occur.

If the first embodiment (fig. 3A) for identifying DTX is adopted, for example, the access network device 11 receives the semi-static HARQ codebook shown in fig. 5c, and obtains that the HARQ ID 6 feedback is 1, the HARQ ID 7 feedback is 0, and the HARQ ID8 feedback is 0 according to the algorithm, then the HARQ ID for scheduling DTX occurrence is HARQ ID 6.

If the second embodiment (fig. 3B) for identifying DTX is adopted, for example, the access network device 11 receives the semi-static HARQ codebook shown in fig. 5d, and obtains that the HARQ ID 6 feedback is 0, the HARQ ID 7 feedback is 0, and the HARQ ID8 feedback is 1 according to the algorithm, then the HARQ ID for scheduling DTX occurrence is HARQ ID 8.

S503: the access network equipment 11 determines the TB for which the DTX indication occurred in accordance with the scheduling of the HARQ ID.

In the first embodiment (fig. 3A) for identifying DTX, the TB scheduling HARQ ID for DTX is: under the HARQ ID, the feedback is a retransmission of NACK.

As an embodiment, the access network device 11 determines whether the TB of the HARQ ID is fed back as NACK, and if the feedback is NACK, the access network device 11 determines whether the TB is retransmitted according to the scheduling information of the TB. For example, the access network device 11 receives the semi-static HARQ codebook shown in fig. 5c, the access network device 11 determines TB3 under HARQ ID 6, the feedback is NACK, and it is known from the scheduling information that TB3 is a retransmission. In the second embodiment (fig. 3B) for identifying DTX, the TB scheduling HARQ ID for DTX is: under the HARQ ID, the feedback is the initial transmission of NACK, and whether the access network device 11 has sent the initial transmission to the terminal 12.

It should be noted that the access network device 11 has sent the TB to the terminal 12, including that the access network device 11 has sent the DCI corresponding to the TB to the terminal 12 in the scheduling of the TB corresponding to the semi-static HARQ codebook.

As an embodiment, the access network device 11 determines whether the TB of the HARQ ID is NACK and initial transmission, and if so, the access network device 11 determines whether the access network device 11 sends the initial transmission to the terminal 12 according to the scheduling information of the TB.

For example, the access network device 11 receives the semi-static HARQ codebook shown in fig. 5d, the access network device 11 determines TB9 under HARQ ID8, the feedback is NACK and initial transmission, and it is known that the access network device 11 has sent TB9 to the terminal 12 according to the scheduling information.

S504: the access network device 11 sends data corresponding to the TB in which the DTX indication occurs in accordance with the scheduling of the HARQ ID to the terminal 12 in an initial transmission manner.

S505: and sending the data corresponding to the TB with NACK feedback to the terminal 12 in the semi-static HARQ codebook according to a retransmission mode.

S504-S505 can refer to the contents 404-S405 in FIG. 4a, and are not described herein again.

By adding a plurality of bits (the number of the HARQ IDs) in the semi-static HARQ codebook, the terminal 12 can feed back the HARQ ID to the access network equipment 11 after recognizing that DTX occurs, so that the access network equipment 11 can accurately position the data with DTX and then send the data, resending of the data without DTX occurs is reduced, wireless network resources are saved, and the success rate of the data is improved.

A third implementation of reporting DTX and issuing data where DTX occurs in the embodiment of the present application is described below with reference to fig. 6A, and may be used in the first implementation or the second implementation of DTX identification.

S601: the access network apparatus 11 transmits SR resource allocation information indicating that DTX occurred to the terminal 12.

The access network device 11 may send the SR resource allocation information to the terminal 12 through an RRC reconfiguration message in a random access procedure.

As an optional implementation manner, before the access network device 11 sends the SR resource allocation information to the terminal 12, the access network device 11 defines a new SR, where the SR is used to indicate DTX; the access network device 11 then allocates time-frequency resources to the new SR.

If the first embodiment (fig. 3A) of identifying DTX is adopted, the SR resource is used to indicate that at least one TB exists in a semi-static HARQ codebook sent by the terminal 12 to the access network device 11, where the TB is a retransmission and DTX occurs in scheduling of the initial transmission.

If the second embodiment (fig. 3B) of identifying DTX is adopted, the SR resource is used to indicate that at least one TB exists in a semi-static HARQ codebook sent by the terminal 12 to the access network device 11, where the TB is an initial transmission, and DTX occurs in scheduling of the initial transmission.

S602: the terminal 12 determines whether DTX is occurring.

If the first embodiment (fig. 3A) for identifying DTX is adopted, the terminal 12 determines whether there is at least 1 TB in the semi-static HARQ codebook, the TB is a retransmission, and DTX occurs in the initial transmission scheduling, if so, DTX occurs

After receiving the TB each time, the terminal 12 determines whether the TB is a retransmission, and DTX occurs in the initial scheduling. Reference may be made to the content of fig. 3A, which is not described in detail herein.

For example, the terminal 12 determines TB3 in the semi-static HARQ codebook as a retransmission, and if DTX occurs in the initial transmission scheduling, DTX occurs.

If at least one TB in the semi-static feedback codebook generates DTX, DTX indication indicates that DTX occurs; if the semi-static HARQ codebook does not have the primary transmission TB that is not received by the terminal 12, DTX occurs.

For example, terminal 12 determines that TB9 in the semi-static HARQ codebook has a DTX occurrence, and then the DTX occurs.

S603: the terminal 12 sends the semi-static HARQ codebook to the access network device 11.

Fig. 6B illustrates a schematic diagram of the semi-static HARQ codebook:

the semi-static HARQ codebook may include a bits (bits), where a is an integer greater than or equal to 2, where a bits correspond to feedback of a TBs, and the feedback of each TB occupies 1 bit;

the feedback for each TB may be 0 or 1, e.g., 0 for NACK and 1 for ACK.

Wherein the a TBs belong to a HARQ processes, respectively, and at least 2 HARQ processes of the a HARQ processes may use the same HARQ ID or may use different HARQ IDs.

As an optional design, the access network device 11 and the terminal 12 may configure a bit index (index) of feedback of each TB in the semi-static HARQ codebook through an algorithm; the terminal 12 may fill the feedback of the corresponding TB and the DTX indication into the corresponding bit index according to the algorithm, and send the semi-static HARQ codebook to the access network device 11, and after the access network device 11 receives the semi-static HARQ codebook, the feedback of each TB may be obtained through the algorithm.

For example, the access network device 11 and the terminal 12 configure according to an algorithm, the 1 st bit of the 1 st bit in the semi-static HARQ codebook is used for feeding back the TB3 of the HARQ ID 6, the 2 nd bit is used for feeding back the TB6 of the HARQ ID 7, and the 3 rd bit is used for feeding back the TB9 of the HARQ ID 8. .

For example, if the first embodiment (fig. 3A) for identifying DTX or the second embodiment (fig. 3B) for identifying DTX is adopted, the terminal 12 receives TB3 of HARQ ID 6, and the CRC check fails; terminal 12 receives TB6 of HARQ ID 7, and the CRC check is successful; terminal 12 does not receive TB9 for HARQ ID 8. The semi-static HARQ codebook at this time may be as shown in fig. 6B.

S604: if DTX occurs, the terminal 12 transmits information on the SR resources.

Correspondingly, the access network device 11 performs detection on the SR resource, and if the detection is performed, it indicates that DTX occurs.

It should be noted that the information here may be an indication that DTX occurs, or may be a pre-configured sequence, and the access network device 11 receives the sequence, and the access network device 11 knows that DTX occurs.

S605: the access network device 11 determines the TB that corresponds to the DTX indication. .

S606: the access network device 11 sends data corresponding to the TB conforming to the DTX indication to the terminal 12 in an initial transmission manner.

S607: the access network device 11 sends the data corresponding to the TB with the remaining feedbacks of NACK in the semi-static HARQ codebook to the terminal 12 in a retransmission manner.

S605-S607 can refer to the related contents of S403-S405 in fig. 4A, and are not described herein again.

The implementation mode can solve the problem of retransmission failure and improve the success rate of data; by allocating the SR resource for indicating DTX, the terminal 12 can report the DTX to the access network device 11 after detecting DTX without modifying the semi-static feedback codebook; in addition, the SR resources are flexibly allocated, and the access network device 11 may allocate the SR resources according to the current scheduling condition, thereby improving the flexibility.

A fourth implementation of reporting DTX and issuing data where DTX occurs in the embodiment of the present application is described below with reference to fig. 7, and may be used in the first implementation or the second implementation of DTX identification.

S701: the access network apparatus 11 sends SR resource allocation information to the terminal 12, where the SR resource is used to indicate whether DTX occurs in scheduling of a HARQ ID.

The SR resource allocation information itself may be an indication for indicating whether DTX occurs in the scheduling of a HARQ ID, or the SR resource allocation information may carry indication information for indicating whether DTX occurs in the scheduling of a HARQ ID.

For example, the access network device 11 transmits SR resource allocation information 1 to the terminal 12, where the SR resource is used to indicate whether DTX occurs in downlink scheduling of the HARQ ID 6.

Access network device 11 may send multiple pieces of SR resource allocation information to terminal 12, where the SR resource allocation information is used to indicate whether DTX occurs for one HARQ ID, and HARQ IDs indicated by each piece of SR resource allocation information are different.

For example, the access network device 11 sends SR resource allocation information 1 and SR resource allocation information 2 to the terminal 12, where the SR resource indicated by the SR resource allocation information 1 is used to indicate whether DTX occurs in downlink scheduling of the HARQ ID 6, and the SR resource indicated by the SR resource allocation information 2 is used to indicate whether DTX occurs in downlink scheduling of the HARQ ID 8.

S702: the terminal 12 determines whether DTX occurred for the scheduling of the HARQ ID.

One HARQ ID may correspond to 1 or more TBs, and in this case, if at least one of the TBs is a retransmission and DTX occurs in the initial transmission schedule, DTX occurs in the HARQ ID schedule.

For example, terminal 12 receives TB3 of HARQ ID 6, the CRC check fails, and recognizes that TB3 at HARQ ID 6 is a retransmission and DTX occurred at its initial transmission; terminal 12 receives TB6 of HARQ ID 7, and the CRC check is successful; terminal 12 does not receive TB9 for HARQ ID 8. Then DTX occurred for the scheduling of HARQ ID 6.

For example, terminal 12 receives TB3 for HARQ ID 6, and the CRC check fails; terminal 12 receives TB6 of HARQ ID 7, and the CRC check is successful; terminal 12 does not receive TB9 of HARQ ID8, TB9 is the initial transmission, and terminal 12 determines that DTX occurs in the scheduling of TB 9. Then DTX occurred for the scheduling of HARQ ID 8.

S703: the terminal 12 sends the semi-static HARQ codebook to the access network device 11.

S703 may refer to related contents in S602 in fig. 6a, and is not described herein again.

S704: and if DTX occurs in the scheduling of the HARQ ID, transmitting information on the SR resource.

Correspondingly, the access network device 11 performs detection on the SR resource, and if information is detected, it indicates that DTX occurs in the scheduling of the HARQ ID.

In the first embodiment (fig. 3A) for identifying DTX, for example, HARQ ID 6 scheduling causes DTX, and information is transmitted on the SR resources indicated by SR resource allocation information 1.

In the second embodiment (fig. 3B) for identifying DTX, for example, when DTX occurs in the scheduling of HARQ ID8, information is transmitted on the SR resource indicated by SR resource allocation information 2.

Here, the information may be an indication of DTX occurrence in scheduling of the HARQ ID, or may be a sequence configured in advance, and the access network device 11 receives the sequence, and the access network device 11 learns DTX occurrence in scheduling of the HARQ ID.

S705: the access network device 11 determines the TB that corresponds to the DTX indication.

S706: the access network device 11 sends data corresponding to the TB conforming to the DTX indication to the terminal 12 in an initial transmission manner.

S707: and sending the data corresponding to the TB with NACK feedback to the terminal 12 in the semi-static HARQ codebook according to a retransmission mode.

By adding a plurality of bits (the number of the HARQ IDs) in the semi-static HARQ codebook, the terminal 12 can feed back the HARQ ID to the access network equipment 11 after recognizing that DTX occurs, so that the access network equipment 11 can accurately position the data with DTX and then send the data, resending of the data without DTX occurs is reduced, and wireless network resources are saved.

S705-S707 refer to the contents of S503-S505 in fig. 5A, and are not described herein again.

Through the embodiment, the terminal 12 can feed back the HARQ ID to the access network device 11 after recognizing that DTX occurs, so that the access network device 11 can more accurately position the data where DTX occurs and then send the data, thereby reducing resending of the data where DTX does not occur, saving wireless network resources, and improving the success rate of data transmission. And, no modification of the semi-static feedback codebook is required. In addition, the SR resources are flexibly allocated, and the access network device 11 may allocate the SR resources according to the current scheduling condition, thereby improving the flexibility.

A fifth implementation manner of reporting DTX and issuing data where DTX occurs in the embodiment of the present application is described below with reference to fig. 8, and may be used in the first implementation manner or the second implementation manner of identifying DTX.

S801: the access network device 11 sends a Preamble for indicating DTX to the terminal 12.

The access network device 11 may send a Preamble indicating DTX to the terminal 12 through the RRC reconfiguration message.

If the first embodiment (fig. 3A) of identifying DTX is adopted, the Preamble is used to indicate that at least one TB exists in a semi-static HARQ codebook sent by the terminal 12 to the access network device 11, where the TB is a retransmission and DTX occurs in scheduling of the initial transmission.

The Preamble itself may be an indication for indicating DTX, and the Preamble may also carry information for indicating DTX.

If the second embodiment (fig. 3B) of identifying DTX is adopted, the Preamble is used to indicate that at least one TB exists in a semi-static HARQ codebook sent by the terminal 12 to the access network device 11, where the TB is an initial transmission and DTX occurs in the scheduling of the initial transmission.

S802: the terminal 12 determines whether DTX is occurring.

S803: the terminal 12 sends the semi-static HARQ codebook to the access network device 11.

S802-S803 may refer to the contents of S602-S603 in fig. 6, and are not described herein again.

S804: if DTX occurs, the terminal 12 sends information to the access network device 11 on the PRACH channel using the Preamble for indicating DTX occurrence.

Correspondingly, the access network device 11 performs detection on the PRACH channel, and if the detection is performed, it indicates that DTX occurs.

S805: the access network device 11 determines the TB that corresponds to the DTX indication.

S806: the access network device 11 sends data corresponding to the TB conforming to the DTX indication to the terminal 12 in an initial transmission manner.

S807: the access network device 11 sends the data corresponding to the TB with the remaining feedbacks of NACK in the semi-static HARQ codebook to the terminal 12 in a retransmission manner.

S805-S807 refer to relevant contents of S403-S405 in fig. 4A, and are not described herein again.

The implementation mode can solve the problem of retransmission failure and improve the success rate of data transmission; moreover, by allocating the Preamble for indicating DTX, the terminal 12 can report the DTX to the access network device 11 after detecting DTX without modifying the semi-static feedback codebook; in addition, the allocation of the Preamble is flexible, and the access network device 11 may allocate the Preamble according to the current scheduling condition, thereby improving the flexibility.

A sixth implementation manner of reporting DTX and issuing data where DTX occurs in the embodiment of the present application is described below with reference to fig. 9, and may be used in the first implementation manner or the second implementation manner of recognizing DTX. S901: the access network device 11 sends a Preamble for indicating that DTX occurs in scheduling of a HARQ ID to the terminal 12.

The Preamble itself may be an indication for indicating the scheduled occurrence DTX of a HARQ ID, or the Preamble may carry information for indicating the scheduled occurrence DTX of a HARQ ID.

Access network device 11 may send a Preamble indicating that DTX occurred in scheduling of the HARQ ID to terminal 12 through an RRC reconfiguration message.

For example, the access network device 11 sends Preamble1 to the terminal 12, where the Preamble1 is used to indicate whether DTX occurs in downlink scheduling of the HARQ ID 6.

The access network device 11 may send multiple preambles to the terminal 12, where the multiple preambles are respectively used to indicate whether DTX occurs for one HARQ ID, and HARQ IDs indicated by each Preamble are different.

For example, the access network device 11 sends Preamble1 and Preamble2 to the terminal 12, where Preamble1 is used to indicate whether DTX occurs in downlink scheduling of HARQ ID 5, and Preamble2 is used to indicate whether DTX occurs in downlink scheduling of HARQ ID 6.

S902: the terminal 12 determines whether DTX occurred for the scheduling of the HARQ ID.

S902 may refer to related contents in S703 in fig. 7, and is not described herein again.

S903: the terminal 12 sends the semi-static HARQ codebook to the access network device 11.

S903 may refer to related contents in S602 in fig. 6A, and details are not repeated here.

S904: if DTX occurs in the scheduling of the HARQ ID, a Preamble for indicating DTX occurs in the scheduling of the HARQ ID is used in the PRACH channel to send information to the access network device 11.

Correspondingly, the access network device 11 performs detection on the PRACH channel, and if information is detected, it indicates that DTX occurs in the scheduling of the HARQ ID.

With the first embodiment (fig. 3A) for identifying DTX, for example, when DTX occurs in the scheduling of HARQ ID 6, Preamble1 is used in the PRACH channel to send information to access network device 11.

In the second embodiment (fig. 3B) for identifying DTX, for example, when DTX occurs in the scheduling of HARQ ID8, Preamble2 is used in the PRACH channel to send information to access network device 11.

S905: the access network device 11 determines the TB that corresponds to the DTX indication.

S906: the access network device 11 sends data corresponding to the TB conforming to the DTX indication to the terminal 12 in an initial transmission manner.

S907: the access network device 11 sends the data corresponding to the TB with the remaining feedbacks of NACK in the semi-static HARQ codebook to the terminal 12 in a retransmission manner.

S905 to S907 refer to the contents of S503 to S505 in fig. 5A, and are not described herein again.

Through the embodiment, the terminal 12 can feed back the HARQ ID to the access network device 11 after recognizing that DTX occurs, so that the access network device 11 can more accurately position the data where DTX occurs and then send the data, thereby reducing resending of the data where DTX does not occur, saving wireless network resources, and improving the success rate of data transmission. And, no modification of the semi-static feedback codebook is required. In addition, the allocation of the Preamble is flexible, and the access network device 11 may allocate the Preamble according to the current scheduling condition, thereby improving the flexibility.

A seventh implementation manner of reporting DTX and issuing data where DTX occurs according to the embodiment of the present application is described below with reference to fig. 10A, and may be used in the second implementation manner of recognizing DTX.

S1001: the terminal 12 sends the semi-static HARQ codebook to the access network device 11.

Fig. 10B illustrates a schematic diagram of the semi-static HARQ codebook:

the semi-static HARQ codebook may include 2x bits, where x is an integer greater than or equal to 1, where the 2x bits correspond to feedback of x TBs, and the feedback of each TB occupies 2 bits.

Since the feedback for each TB takes 2 bits, there are 4 possibilities, 00, or 01, or 10, or 11, respectively. In implementation, 3 possibilities are used from 4 possibilities, which respectively represent that the terminal 12 receives the TB and the CRC check is successful, or the terminal 12 receives the TB and the CRC check is failed, or the terminal 12 determines that DTX occurs in the scheduling of the TB.

For example, 10 indicates that the terminal 12 received the TB, but the CRC check failed; 11 indicates that the terminal 12 received the TB and the CRC check succeeded; 00 represents the terminal 12 determining the scheduled occurrence DTX for the TB.

As an implementation manner, the access network device 11 and the terminal 12 may configure a bit index of feedback of each TB in the semi-static HARQ codebook through an algorithm; the terminal 12 may fill the feedback of the corresponding TB into the corresponding bit index according to the algorithm, and send the semi-static HARQ codebook to the access network device 11, and after the access network device 11 receives the semi-static HARQ codebook, the feedback of each TB may be obtained through the algorithm.

For example, according to the algorithm configuration, the access network device 11 and the terminal 12 use the 1 st bit and the 2 nd bit in the semi-static HARQ codebook for feeding back the TB3 feedback of the HARQ ID 6, the 3 rd bit and the 4 th bit for feeding back the TB6 of the HARQ ID 7, and the 5 th bit and the 6 th bit for feeding back the TB9 of the HARQ ID 8. Terminal 12 receives TB3 of HARQ ID 6, and the CRC check fails; terminal 12 receives TB6 of HARQ ID 7, and the CRC check is successful; the terminal 12 determines that the scheduled occurrence of TB9 is DTX. Then the semi-static HARQ codebook for terminal 12 may be as shown in fig. 10C.

As an implementation manner, DTX may occur in scheduling of each TB default feedback TB in the semi-static HARQ codebook, and if the terminal 12 receives the TB and CRC check succeeds, modify the feedback of the TB, for example, to 11, if the terminal 12 receives the TB and CRC check fails, modify the feedback of the TB, for example, to 10, and the terminal 12 determines that DTX occurs in scheduling of the TB, and then maintain the default feedback of the TB.

S1002: after receiving the semi-static HARQ codebook, the access network device 11 determines to schedule the TB where DTX occurs.

The access network device 11 obtains the scheduling information of the TB according to the TB that is not received by the terminal 12 according to the feedback, for example, the scheduling information of the TB may be stored in the access network device 11. If access network device 11 has transmitted the TB and the DCI corresponding to the TB to terminal 12, it indicates that DTX has occurred in the TB scheduling.

For example, after receiving the semi-static HARQ codebook, the access network device 11 acquires feedback of TB9 to schedule occurrence of DTX, for example, 00, and the access network device 11 acquires the stored scheduling information, and knows that the DCI corresponding to TB9 and TB9 has been sent to the terminal 12, so that TB9 is the TB in which DTX is scheduled to occur.

S1003: the access network device 11 sends data corresponding to the TB where DTX is scheduled to the terminal 12 in an initial transmission manner.

Here, the access network device 11 may regenerate the DCI transmitted initially and the DCI transmitted initially, or may use the TB stored in the access network device 11.

For example, the access network device 11 sends the TB9 to the terminal 12 in the initial transmission mode.

S1004: the access network device 11 sends the data corresponding to the TB with the remaining feedbacks of NACK in the semi-static HARQ codebook to the terminal 12 in a retransmission manner.

For example, the access network device 11 sends the TB3 to the terminal 12 in a retransmission manner.

According to the embodiment, whether DTX occurs in scheduling is fed back through the initial transmission of the terminal 12, and the DTX can be sent to the access network equipment 11 in the initial transmission, so that the access network equipment 11 can take measures in time, retransmission is prevented from being sent to the terminal 12, wireless network resources are wasted, the TB where DTX occurs in scheduling can be accurately positioned by the access network equipment 11 and then sent to the terminal 12, the problem of retransmission failure is solved, and the success rate of data transmission is improved.

Fig. 11 is a schematic structural diagram of an access network device 11.

The access network device 11 includes at least one processor 1111, at least one memory 1112, at least one transceiver 1113, at least one network interface 1114, and one or more antennas 1115. The processor 1111, memory 1112, transceiver 1113, and network interface 1114 are connected, such as by a bus. The antenna 1115 is connected to the transceiver 1113. The network interface 1114 is used to enable the access network device to connect to other communication devices via a communication link, for example, the access network device connects to the core network element 101 via the S1 interface. In the embodiment of the present application, the connection may include various interfaces, transmission lines, buses, and the like, which is not limited in this embodiment.

The processors in the embodiments of the present application, such as the processor 1111, may include at least one of the following types: a general-purpose Central Processing Unit (CPU), a Digital Signal Processor (DSP), a microprocessor, an Application-Specific Integrated Circuit (ASIC), a Microcontroller (MCU), a Field Programmable Gate Array (FPGA), or an Integrated Circuit for implementing logic operations. For example, the processor 1111 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The at least one processor 1111 may be integrated in one chip or located on multiple different chips.

The memory in the embodiments of the present application, for example, the memory 1112, may include at least one of the following types: read-only memory (ROM) or other types of static memory devices that may store static information and instructions, Random Access Memory (RAM) or other types of dynamic memory devices that may store information and instructions, and Electrically erasable programmable read-only memory (EEPROM). In some scenarios, the memory may also be, but is not limited to, a compact disk-read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

The memory 1112 may be separate and coupled to the processor 1111. Alternatively, the memory 1112 may be integrated with the processor 1111, for example, within a chip. The memory 1112 can store program codes for executing the technical solutions of the embodiments of the present application, and the processor 1111 controls the execution of the program codes, and various executed computer program codes can also be regarded as drivers of the processor 1111. For example, the processor 1111 is configured to execute the computer program code stored in the memory 1112, thereby implementing the technical solution in the embodiment of the present application.

The transceiver 1113 may be configured to support reception or transmission of radio frequency signals between the access network devices and the terminals, and the transceiver 1113 may be coupled to the antenna 1115. The transceiver 1113 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 1115 may receive rf signals, and the receiver Rx of the transceiver 1113 is configured to receive the rf signals from the antennas, convert the rf signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 1111, so that the processor 1111 may further process the digital baseband signals or digital intermediate frequency signals, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 1113 is also configured to receive a modulated digital baseband signal or a digital intermediate frequency signal from the processor 1111, convert the modulated digital baseband signal or the digital intermediate frequency signal into a radio frequency signal, and transmit the radio frequency signal through the one or more antennas 1115. Specifically, the receiver Rx may selectively perform one or more stages of down-mixing and analog-to-digital conversion processes on the rf signal to obtain a digital baseband signal or a digital intermediate frequency signal, wherein the order of the down-mixing and analog-to-digital conversion processes is adjustable. The transmitter Tx may selectively perform one or more stages of up-mixing and digital-to-analog conversion processes on the modulated digital baseband signal or the modulated digital intermediate frequency signal to obtain the rf signal, where the order of the up-mixing and the digital-to-analog conversion processes is adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as a digital signal.

The transceiver 1113 implements the transmission from the access network device 11 to the terminal 12 or the reception from the terminal 12 by the access network device 11 in the first and/or second partial schemes, for example, the transceiver 1113 may implement the transmission of DCI to the terminal 12, the transmission of TB to the terminal 12, the reception of the semi-static feedback codebook sent by the terminal 12 and the initial transmission of data corresponding to the TB that meets the DTX indication to the terminal 12. The processor 1211 may execute a program to implement the first part and/or the second part of the scheme described above. The memory 1112 may store the programs or data in the first and/or second partial schemes, for example, the access network device 11 may store the scheduling information of the TB transmitted to the terminal 12, and the access network device 11 may store the algorithm of the semi-static codebook.

Fig. 12 is a schematic structural diagram of a terminal 12 according to an embodiment of the present disclosure.

The terminal includes at least one processor 1211, at least one transceiver 1212, and at least one memory 1213. The processor 1211, the memory 1213 and the transceiver 1212 are coupled. Optionally, terminal 121 may also include an output device 1214, an input device 1215, and one or more antennas 1216. An antenna 1216 is coupled to the transceiver 1212, and an output device 1214 and an input device 1215 are coupled to the processor 1211.

The transceiver 1212, memory 1213 and antenna 1216 may perform similar functions as described in relation to fig. 2 b.

The processor 1211 may be a baseband processor or a CPU, and the baseband processor and the CPU may be integrated together or separated.

The processor 1211 may be used to implement various functions for the terminal, such as processing a communication protocol and communication data, or controlling the entire terminal device, executing a software program, processing data of the software program; or to assist in completing computational processing tasks, such as processing of graphical images or audio, etc.; or processor 1211 may be used to perform one or more of the functions described above.

The output device 1214 is in communication with the processor 1211 and may display information in a variety of ways. For example, the output device 1214 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) Display device, a Cathode Ray Tube (CRT) Display device, a projector (projector), or the like. The input device 1215 is in communication with the processor 1211 and may accept user input in a variety of ways. For example, the input device 1215 can be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

The transceiver 1212 implements the transmission from the terminal 12 to the access network device 11 or the reception from the access network device 11 by the terminal 12 in the first and/or second partial schemes, for example, the transceiver 1212 may implement the initial transmission of receiving DCI from the terminal 12, receiving TB from the terminal 12, transmitting the semi-static feedback codebook to the terminal 12, and receiving data corresponding to the TB conforming to the DTX indication from the access network device 11. The processor 1211 may execute a program to implement the aspects of the first part and/or the second part described above. For example, the processor 1211 may determine whether the current TB is a retransmission and DTX occurs in the initial transmission schedule by running a program. The memory 1213 may store the program or data in the first partial scheme and/or the second partial scheme, for example, the memory 1213 may store information of the TB when the semi-static HARQ codebook is received, if the TB is a TB in feedback of the semi-static codebook.

An apparatus 1000 provided by an embodiment of the present application is described below. As shown in fig. 10:

the apparatus 1000 comprises a processing unit 1001 and a communication unit 1002. Optionally, the apparatus further comprises a storage unit 1002. The processing unit 1001, the communication unit 1002, and the storage unit 1002 are connected by a communication bus.

The communication unit 1002 may be a device having a transceiving function for communicating with other network apparatuses or a communication network.

The storage unit 1002 may include one or more memories, which may be devices for storing programs or data.

The storage unit 1002 may be independent and connected to the processing unit 1001 through a communication bus. The memory unit may also be integrated with the processing unit 1001.

The apparatus 1000 may be used in a network device, circuit, hardware component, or chip.

The device 1000 may be a terminal 12 in an embodiment of the present application. A schematic diagram of the terminal 12 may be as shown in fig. 12. Optionally, the communication unit 1003 of the apparatus 1000 may include an antenna and a transceiver of a terminal, such as the antenna 1216 and the transceiver 1212 in fig. 12. Optionally, the communication unit 1003 may also include output devices and input devices, such as output device 1214 and input device 1215 in fig. 2 b.

The device 1000 may be a chip in the terminal 12 in the embodiments of the present application. The communication unit 1003 may be an input or output interface, pin, circuit, or the like. Alternatively, the storage unit may store computer-executable instructions of the terminal-side method to cause the processing unit 1001 to execute the terminal-side method in the above-described embodiment. The storage unit 1002 may be a register, a cache, a RAM, or the like, and the storage unit 1002 may be integrated with the processing unit 1001; the storage unit 1002 may be a ROM or other type of static storage device that may store static information and instructions, and the storage unit 1002 may be separate from the processing unit 1001. Alternatively, as wireless communication technology evolves, a transceiver may be integrated on the device 1000, e.g., the communication unit 1003 integrates the transceiver 1212.

When the apparatus 1000 is the terminal 12 or a chip in the terminal 12 in the embodiment of the present application, the apparatus 1000 may implement the method performed by the terminal 12 in the embodiment described above.

The apparatus 1000 may be the access network device 11 in the embodiment of the present application. A schematic diagram of the access network device 11 may be as shown in fig. 11. Optionally, the communication unit 1003 of the apparatus 1000 may include an antenna and a transceiver of a base station, such as the antenna 1115 and the transceiver 1113 in fig. 11. The communication unit 1003 may also include a network interface for a base station, such as the network interface 1114 in fig. 11.

The apparatus 1000 may be a chip in the access network device 11 in the embodiment of the present application. The communication unit 1003 may be an input or output interface, pin, circuit, or the like. Alternatively, the storage unit may store a computer-executable instruction of the method on the access network device 11 side, so that the processing unit 1001 executes the method on the access network device 11 side in the foregoing embodiment. The storage unit 1002 may be a register, a cache, a RAM, or the like, and the storage unit 1002 may be integrated with the processing unit 1001; the storage unit 1002 may be a ROM or other type of static storage device that may store static information and instructions, and the storage unit 1002 may be separate from the processing unit 1001. Alternatively, as wireless communication technology evolves, a transceiver may be integrated on the device 1000, such as the communication unit 1003 integrating the transceiver 1113, the network interface 1114.

When the apparatus 1000 is a base station or a chip in the base station in the embodiment of the present application, the method performed by the base station in the embodiment described above may be implemented.

The embodiment of the application also provides a device which comprises a functional unit for realizing each step of the terminal side of the method.

The embodiment of the application also provides a device, which comprises a functional unit for realizing each step of the method on the access network equipment side.

In the embodiments of the present application, the number of the plurality may be 2, 3 or more. "A/B" may represent one or more of A, B, A and B, A or B.

The embodiment of the application also provides a computer readable storage medium. The methods described in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media may include computer storage media and communication media, and may include any medium that can communicate a computer program from one place to another. A storage media may be any available media that can be accessed by a computer.

As an alternative design, a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

The embodiment of the application also provides a computer program product. The methods described in the above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. If implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in the above method embodiments are generated in whole or in part when the above computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a user device, or other programmable apparatus.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

Claims

1. An information feedback method, characterized in that the method comprises:

receiving a plurality of transport blocks, TBs;

sending a semi-static hybrid automatic repeat request (HARQ) codebook corresponding to the TBs to access network equipment;

if DTX occurs in the initial transmission of at least one TB of the multiple TBs, the semi-static HARQ codebook includes indication information, where the indication information is used to indicate that at least one first TB in which DTX occurs during the initial transmission exists in the multiple TBs; the first TB is an initial transmission TB or a retransmission TB;

receiving initial transmission of data corresponding to initial transmission of a second TB from the access network equipment; wherein, when the first TB is a primary-transmitted TB, the second TB is a primary-transmitted TB in which the feedback is NACK among the plurality of TBs; and if the first TB is a retransmitted TB, the second TB is a NACK fed back from the plurality of TBs and is a retransmitted TB.

2. The method of claim 1, wherein the indication information is indication information sent to the access network device through a first SR resource.

3. The method of claim 1, further comprising:

and sending a first preamble corresponding to the indication information to the access network equipment.

4. The method as claimed in any of claims 1-3, wherein the indication information includes an identifier of a first HARQ process, and the first TB is a TB corresponding to the first HARQ process.

5. The method according to any of claims 1-3, wherein the if DTX occurs for the initial transmission of at least one TB of the plurality of TBs, comprising:

if the modulation and coding scheme MCS corresponding to the at least one TB in the plurality of TBs or the redundancy version RV corresponding to the at least one TB indicates retransmission and the new data indication NDI corresponding to the at least one TB is turned over, the at least one TB has DTX.

6. An information feedback method, characterized in that the method comprises:

receiving a plurality of TBs;

sending the semi-static HARQ codebooks corresponding to the TBs to access network equipment;

if DTX occurs in the initial transmission of at least one TB of the TBs, sending indication information to the access network equipment, wherein the indication information is used for indicating that at least one first TB which occurs DTX in the initial transmission exists in the TBs; the first TB is an initial transmission TB or a retransmission TB;

7. The method of claim 6, wherein the sending the indication information to the access network device comprises:

and sending the indication information to the access network equipment through the first SR resource.

8. The method of claim 6, wherein the sending the indication information to the access network device comprises:

9. The method as claimed in any of claims 6-8, wherein the indication information includes an identifier of a first HARQ process, and the first TB is a TB corresponding to the first HARQ process.

10. The method according to any of claims 6-8, wherein the if DTX occurs for the initial transmission of at least one TB of the plurality of TBs, comprising:

11. An information feedback method, characterized in that the method comprises:

transmitting a plurality of transport blocks, TBs, to a terminal;

receiving a semi-static hybrid automatic repeat request (HARQ) codebook corresponding to the TBs from the terminal;

the semi-static HARQ codebook comprises indication information, wherein the indication information is used for indicating that at least one first TB which generates DTX in initial transmission exists in the plurality of TBs; the first TB is an initial transmission TB or a retransmission TB;

determining a second TB of the plurality of TBs; wherein, when the first TB is a primary-transmitted TB, the second TB is a primary-transmitted TB in which the feedback is NACK among the plurality of TBs; when the first TB is a retransmitted TB, the second TB is a NACK fed back from the multiple TBs and is a retransmitted TB;

and sending initial transmission of data corresponding to the initial transmission of the second TB to the terminal.

12. The method of claim 11, wherein the indication information is indication information received from the terminal through a first SR resource.

13. The method of claim 11, further comprising:

and receiving a first preamble corresponding to the indication information from the terminal.

14. The method as claimed in any of claims 11-13, wherein the indication information comprises an identifier of a first HARQ process, and the first TB is a TB corresponding to the first HARQ process.

15. The method according to any of claims 11-13 wherein there is at least a first TB of the plurality of TBs where DTX occurred at the initial transmission, comprising:

if the modulation and coding scheme MCS corresponding to the first TB or the redundancy version RV corresponding to the first TB in the multiple TBs indicates retransmission and the new data indication NDI corresponding to the first TB is turned over, the first TB has DTX.

16. An information feedback method, characterized in that the method comprises:

transmitting a plurality of transport blocks, TBs, to a terminal;

receiving indication information from the terminal, wherein the indication information is used for indicating that at least one first TB which generates DTX in initial transmission exists in the plurality of TBs; the first TB is an initial transmission TB or a retransmission TB;

17. The method of claim 16, wherein the receiving the indication information from the terminal comprises:

receiving the indication information from the terminal through a first SR resource.

18. The method of claim 16, wherein the receiving the indication information from the terminal comprises:

19. The method according to any of claims 16-18, wherein the indication information comprises an identification of a first HARQ process, and the first TB is a TB corresponding to the first HARQ process.

20. The method according to any of claims 16-18 wherein there is at least a first TB of the plurality of TBs where DTX occurred at the initial transmission, comprising:

21. An apparatus comprising a memory for storing a computer program and a processor for retrieving from the memory and executing the computer program such that the apparatus performs the method of any of claims 1-5 or 6-10.

22. An apparatus comprising a memory for storing a computer program and a processor for retrieving from the memory and executing the computer program such that the apparatus performs the method of any of claims 11-15 or 16-20.

23. A computer-readable storage medium storing a program for implementing the method according to any one of claims 1 to 5 or 6 to 10.

24. A computer-readable storage medium storing a program for implementing the method according to any one of claims 11 to 15 or 16 to 20.