CN112583537B

CN112583537B - Indication and determination method and device for HARQ (hybrid automatic repeat request) feedback mode

Info

Publication number: CN112583537B
Application number: CN201910945432.2A
Authority: CN
Inventors: 刘是枭; 纪子超; 刘思綦
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2022-07-01
Anticipated expiration: 2039-09-30
Also published as: CN115085873A; CN112583537A; WO2021063358A1

Abstract

The invention discloses an indication and determination method and device for a hybrid automatic repeat request (HARQ) feedback mode, and belongs to the technical field of communication. The indication method of the HARQ feedback mode is applied to a sending end and comprises the following steps: determining a target HARQ feedback mode, wherein the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode feeds back NACK information for receiving end data receiving failure, and ACK information is not fed back for data receiving success; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds; and indicating the target HARQ feedback mode to a receiving end through control information and/or data information. According to the technical scheme, the receiving end can know the HARQ feedback mode and perform feedback according to the HARQ feedback mode, and the system performance is improved.

Description

Indication and determination method and device for HARQ (hybrid automatic repeat request) feedback mode

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating and determining a HARQ feedback mode.

Background

In the New Radio (NR) sidelink (sidelink) technology, there are two schemes for multicast HARQ that support the function of multicast Hybrid Automatic Repeat reQuest (HARQ): 1. for the multicast communication of scheme 1, a first terminal sending data does not know the number and identity of terminals in a group, all receiving terminals share one feedback resource, and the receiving terminals only feed back Negative Acknowledgement (NACK) and not Acknowledgement (ACK), and the first terminal needs to retransmit as long as it receives NACK fed back by any one of the receiving terminals; 2. for the multicast communication in scheme 2, the first terminal sending data knows the number and identity information of the receiving terminals in the group, all the receiving terminals are allocated with respective feedback resources, the receiving terminals feed back both NACK and ACK, and the first terminal can know which terminals in the group have not successfully received according to the received feedback information. Therefore, the sending end needs to use a scheme for data transmission and notify the receiving end, and the receiving end performs HARQ feedback according to the feedback mode of the corresponding scheme.

However, in the related art, the selection methods of the two schemes are not defined, and how to notify the receiving end of which HARQ feedback method is adopted is not defined.

Disclosure of Invention

The embodiment of the invention provides a method and a device for indicating and determining a HARQ feedback mode.

In a first aspect, an embodiment of the present invention provides a method for indicating an HARQ feedback mode, where the method is applied to a sending end, and includes:

determining a target HARQ feedback mode, wherein the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode is that the receiving end fails to receive data and feeds back NACK information, and the receiving end succeeds in receiving data and does not feed back ACK information; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

and indicating the target HARQ feedback mode to a receiving end through control information and/or data information.

In a second aspect, an embodiment of the present invention provides a method for determining an HARQ feedback mode, where the method is applied to a receiving end, and the method includes:

receiving control information and/or data information of a sending end, wherein the control information and/or the data information indicates a target HARQ feedback mode, the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode is that NACK information is fed back when the receiving end fails to receive data, and ACK information is not fed back when the receiving end succeeds in receiving the data; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

and determining a target HARQ feedback mode according to the control information and/or the data information.

In a third aspect, an embodiment of the present invention further provides an apparatus for indicating a HARQ feedback mode, where the apparatus is applied to a sending end, and the apparatus includes:

the device comprises a determining module, a feedback module and a feedback module, wherein the determining module is used for determining a target HARQ feedback mode, the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode feeds back NACK information for the failure of receiving data reception of a receiving end, and ACK information is not fed back for the success of data reception; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

and the indicating module is used for indicating the target HARQ feedback mode to a receiving end through control information and/or data information.

In a fourth aspect, an embodiment of the present invention provides an apparatus for determining an HARQ feedback mode, where the apparatus is applied to a receiving end, and the apparatus includes:

the receiving module is used for receiving control information and/or data information of a sending end, wherein the control information and/or data information indicates a target HARQ feedback mode, the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode is that NACK information is fed back when the receiving end fails to receive data, and ACK information is not fed back when the receiving end succeeds in receiving the data; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

and the determining module is used for determining a target HARQ feedback mode according to the control information and/or the data information.

In a fifth aspect, an embodiment of the present invention further provides a communication device, where the communication device includes a processor, a memory, and a computer program stored in the memory and running on the processor, and the processor, when executing the computer program, implements the steps of the method for indicating an HARQ feedback mode or the steps of the method for determining an HARQ feedback mode as described above.

In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program, when executed by a processor, implements the steps of the method for indicating an HARQ feedback mode or the steps of the method for determining an HARQ feedback mode.

In the scheme, the sending end can select the target HARQ feedback mode according to the service characteristics of the sending end, the user conditions in the group, the communication characteristics, the movement speed and other factors, and inform the receiving end of the determined target HARQ feedback mode, so that the receiving end can feed back through the target HARQ feedback mode, the whole communication process has stronger adaptability, unnecessary expenses are reduced, and the system performance is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 shows a block diagram of a mobile communication system to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart illustrating an indication method of an HARQ feedback mode according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a method for determining an HARQ feedback mode according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating transmission of pschs and/or PSCCHs corresponding to two different HARQ feedback manners in different resource pools according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating that transmission resources of pschs and/or PSCCHs corresponding to two different HARQ feedback modes are separated in a frequency domain in the same resource pool according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating that transmission resources of pschs and/or PSCCHs corresponding to two different HARQ feedback modes are separated in a time domain in the same resource pool according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a module structure of a transmitting end according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a module structure of a receiving end according to an embodiment of the present invention;

FIG. 9 shows a block diagram of a terminal of an embodiment of the invention;

fig. 10 shows a block diagram of a control node according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In the description and in the claims "and/or" means at least one of the connected objects.

The techniques described herein are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced, LTE-a)/New Radio (NR) systems, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA), IEEE 802.11(Wi-Fi), IEEE 802.16(WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes the NR system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the spirit and scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Referring to fig. 1, fig. 1 is a block diagram of a wireless communication system to which an embodiment of the present invention is applicable. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may also be referred to as a terminal Device or a terminal (UE), where the terminal 11 may be a Mobile phone, an automobile, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and the specific type of the terminal 11 is not limited in the embodiment of the present invention. The network-side device 12 may be a Base Station or a core network or other control node, such as a drive test unit, a relay node, etc., wherein the Base Station may be a 5G or later-version Base Station (e.g., a gNB, a 5G NR NB, etc.), or a Base Station in other communication systems (e.g., an eNB, a WLAN access point, or other access points, etc.), wherein the Base Station may be referred to as a node B, an evolved node B, an access point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, or some other suitable terminology in the field, and the Base Station is not limited to a specific technical vocabulary as long as the same technical effect is achieved, it should be noted that, in the embodiment of the present invention, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The base stations may communicate with the terminals 11 under the control of a base station controller, which may be part of the core network or some of the base stations in various examples. Some base stations may communicate control information or terminal data with the core network via a backhaul. In some examples, some of the base stations may communicate with each other, directly or indirectly, over backhaul links, which may be wired or wireless communication links. A wireless communication system may support operation on multiple carriers (waveform signals of different frequencies). A multi-carrier transmitter can transmit modulated signals on the multiple carriers simultaneously. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal may be transmitted on a different carrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, data, and so on.

The base station may communicate wirelessly with the terminal 11 via one or more access point antennas. Each base station may provide communication coverage for a respective coverage area. The coverage area of an access point may be divided into sectors that form only a portion of the coverage area. A wireless communication system may include different types of base stations (e.g., macro, micro, or pico base stations). The base stations may also utilize different radio technologies, such as cellular or WLAN radio access technologies. The base stations may be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including coverage areas of base stations of the same or different types, coverage areas utilizing the same or different radio technologies, or coverage areas belonging to the same or different access networks) may overlap.

The communication link in the wireless communication system may include an Uplink for carrying Uplink (UL) transmission (e.g., from the terminal 11 to the network side device 12), or a Downlink for carrying Downlink (DL) transmission (e.g., from the network side device 12 to the terminal 11), and may further include Sidelink (SL) transmission. The UL transmission may also be referred to as reverse link transmission, while the DL transmission may also be referred to as forward link transmission. Downlink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmissions may be made using licensed frequency bands, unlicensed frequency bands, or both.

In order to improve the reliability and effectiveness of sidelink transmission, a New Radio (NR) vehicular wireless communication technology (V2X) introduces a Hybrid Automatic Repeat reQuest (HARQ). However, in the related art, how the sending end selects the HARQ feedback mode is not defined, and the sending end notifies the receiving end.

The embodiment of the invention provides an indication and determination method and device for a HARQ feedback mode, which can select the HARQ feedback mode and indicate the selected HARQ feedback mode to a receiving end.

An embodiment of the present invention provides an indication method for an HARQ feedback mode, which is applied to a sending end, and as shown in fig. 2, the method includes:

step 101: determining a target HARQ feedback mode, wherein the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode feeds back NACK information for receiving end data receiving failure, and ACK information is not fed back for data receiving success; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

step 102: and indicating the target HARQ feedback mode to a receiving end through control information and/or data information.

In this embodiment, the sending end may select the target HARQ feedback mode according to the service characteristics of the sending end, the user conditions in the group, the communication characteristics, the movement speed, and other factors, and notify the receiving end of the determined target HARQ feedback mode, so that the receiving end may perform feedback through the target HARQ feedback mode, so that the entire communication process has stronger adaptability, reduces unnecessary overhead, and improves system performance.

The sending end may be a control node or a first terminal, there is communication transmission between the first terminal and a second terminal, the first terminal is used to send data to the second terminal, the second terminal is a receiving object for the first terminal to send data, and the receiving end is the second terminal.

Optionally, the sending end is a control node, and the sending end determines a target HARQ feedback mode by using at least one of the following auxiliary information:

the number of receiving ends;

quality of Service (QoS) parameters of a Service;

whether RRC connection exists between a first terminal and a receiving terminal or not is judged, and the first terminal is used for sending data to the receiving terminal;

the terminal movement speed comprises a first terminal movement speed and a second terminal movement speed, wherein communication transmission exists between the first terminal and the second terminal, and the first terminal sends data to the second terminal;

channel quality, which may be reflected by measuring Reference Signal Receiving Power (RSRP) and/or Received Signal Strength Indication (RSSI);

a physical sidelink control channel PSCCH transmits a corresponding target mark;

transmitting a corresponding group identifier for the PSCCH;

transmitting a corresponding destination identifier by a physical side link shared channel PSSCH;

the psch conveys a corresponding group identity.

In a specific embodiment, before the sending end is a control node and determines a target HARQ feedback mode, the method further includes:

and receiving the auxiliary information reported by a first terminal, wherein the first terminal is used for sending data to the receiving terminal.

When the sending end is a control node, after a target HARQ feedback mode is determined, the method specifically includes:

and indicating the target HARQ feedback mode to a first terminal and/or a receiving terminal through control information, wherein the first terminal is used for sending data to the receiving terminal.

When the sending end is a control node, the control information may be carried by any one of the following:

downlink Control Information (DCI);

media Access Control (MAC) messages;

radio Resource Control (RRC) messages;

system Information (SI);

sidelink Control Information (SCI) message.

Wherein the target HARQ feedback mode is explicitly indicated by any one of the following modes:

(1) indicating through an independent HARQ feedback mode indication domain in the control information;

specifically, the indication manner employs any one of the following:

respectively indicating whether the target HARQ feedback mode is a first HARQ feedback mode or a second HARQ feedback mode through the two code points;

indicating that a target HARQ feedback mode is a first HARQ feedback mode or a default HARQ feedback mode through one code point, wherein the default HARQ feedback mode is a second HARQ feedback mode;

and indicating that the target HARQ feedback mode is a second HARQ feedback mode or a default HARQ feedback mode through one code point, wherein the default HARQ feedback mode is a first HARQ feedback mode.

(2) Performing joint coding indication through useless code points in other indication domains in the control information;

specifically, the indication manner employs any one of the following:

(3) And indicating by the HARQ feedback mode indication domain and other indication domains in the control information in a cascading and joint coding manner.

Specifically, 1 bit of any position after the cascade connection can be used for indicating, and two code points correspond to two feedback modes; or, indicating that the target HARQ feedback mode is a first HARQ feedback mode or a default HARQ feedback mode through one code point, wherein the default HARQ feedback mode is a second HARQ feedback mode; or, indicating that the target HARQ feedback mode is the second HARQ feedback mode or the default HARQ feedback mode through one code point, where the default HARQ feedback mode is the first HARQ feedback mode.

Wherein the target HARQ feedback mode is implicitly indicated by any one of the following modes:

(1) the indication is performed through the group identifier carried in the control information, and the indication includes any one of the following: indicating a target HARQ feedback mode through the value of the group identifier; indicating a target HARQ feedback mode through code points corresponding to the group identifier, wherein one part of code points are used for indicating a first HARQ feedback mode, and the other part of code points are used for indicating a second HARQ feedback mode; indicating a target HARQ feedback mode through a part of bits (MSB, LSB, etc.) in the group identifier; indicating a target HARQ feedback mode through whether an intra-group identifier corresponding to the group identifier exists at a receiving end;

specifically, if the value of the group identifier is greater than the threshold value, indicating that the target HARQ feedback mode is the first HARQ feedback mode, and if the value of the group identifier is less than or equal to the threshold value, indicating that the target HARQ feedback mode is the second HARQ feedback mode; and if the value of the group identifier is greater than the threshold value, indicating that the target HARQ feedback mode is the second HARQ feedback mode, and if the value of the group identifier is less than or equal to the threshold value, indicating that the target HARQ feedback mode is the first HARQ feedback mode.

(2) Indicating through PSSCH transmission resource configuration information carried in the control information, and judging the HARQ feedback mode by the first terminal or the receiving end according to the PSSCH resource position information, wherein the PSSCH resource positions corresponding to different HARQ feedback modes are different and can be in different resource pools, different frequency domain resources in the same resource pool or different time domain resources in the same resource pool;

specifically, any of the following is included: indicating through a resource pool where the PSSCH is transmitted; indicating by transmitting the frequency domain resource position of the PSSCH; indicated by the time domain resource location of the transmitted PSSCH.

(3) Indicating through PSCCH transmission resource configuration information carried in the control information, and judging HARQ feedback modes by the first terminal or the receiving terminal according to PSCCH resource position information, wherein the PSCCH resource positions corresponding to different HARQ feedback modes are different and may be in different resource pools, different frequency domain resources in the same resource pool or different time domain resources in the same resource pool;

specifically, any of the following is included: indicating through a resource pool where the PSCCH is transmitted; indicating by the frequency domain resource position of the transmitted PSCCH; the indication is made by the time domain resource location of the transmitted PSCCH.

(4) Indicating by using the PSFCH transmission resource configuration information carried in the control information, including the number of PSFCH resources, the first terminal or the receiving end determines the HARQ feedback mode according to the resource location information of the PSFCH, and the PSFCH resources corresponding to different HARQ feedback modes may be Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or Code Division Multiplexing (CDM);

specifically, the indication by the PSFCH transmission resource configuration information carried in the control information includes any one of the following: indicating by transmitting time resources of the PSFCH; indicating by transmitting frequency domain resources of the PSFCH; indicating by transmitting code domain resources of the PSFCH; this is indicated by the number of transmitted PSFCHs.

(5) The indication is carried out through the content of the indication domain in the control information, and the indication comprises any one of the following items: indicating that the target HARQ feedback mode is a first HARQ feedback mode by indicating that the code point in the domain is a preset code point; indicating that the target HARQ feedback mode is a second HARQ feedback mode by indicating that the code point in the domain is a preset code point; the indication fields include communication range, RSRP threshold, and geographical area (zone) ID, among other available indication fields.

(6) The target HARQ feedback mode can be indicated through the source ID of the sending end identification in the control information, and specifically, whether RRC connection exists between the first terminal corresponding to the sending end identification and the receiving end or not can be used for indicating the target HARQ feedback mode.

Wherein, the corresponding relation between the threshold value, the PSFCH transmission resource configuration information, the PSSCH transmission resource configuration information or the transmission resource configuration information of the PSCCH and the target HARQ feedback mode is obtained by any one of the following modes:

defining a protocol;

SCI message configuration;

DCI message configuration;

configuring an SI message;

RRC message configuration;

and configuring the MAC message.

In another specific embodiment, the sending end is a first terminal, the first terminal is configured to send data to the receiving end, and the control information is carried by any one of the following:

a SCI message;

a sidelink system information block, SIB, message;

an RRC message;

a packet data convergence protocol PDCP message;

radio link control, RLC, messages

And (6) MAC message.

When the sending end is a first terminal, the first terminal determines the target HARQ feedback mode to include any one of the following:

receiving indication information which is sent by a control node and indicates the target HARQ feedback mode, and determining the target HARQ feedback mode according to the indication information;

determining the target HARQ feedback mode according to auxiliary information, wherein the auxiliary information comprises at least one of the following: the method comprises the steps of receiving end quantity, service quality QoS parameters of services, whether RRC connection exists between a first terminal and the receiving ends, the movement speed of the terminal, channel quality, a target mark corresponding to PSCCH transmission, a group mark corresponding to PSCCH transmission, a target mark corresponding to PSSCH transmission and a group mark corresponding to PSSCH transmission.

The first terminal can decide the target HARQ feedback mode by itself and indicate the target HARQ feedback mode to the receiving end, or the control node can decide the target HARQ feedback mode, the first terminal receives indication information which is sent by the control node and indicates the target HARQ feedback mode, and the first terminal determines the target HARQ feedback mode according to the indication information and then indicates the target HARQ feedback mode to the receiving end.

specifically, the indication manner employs any one of the following:

Specifically, 1 bit at any position after the cascade connection can be used for indicating, and two code points correspond to two feedback modes; or, indicating that the target HARQ feedback mode is a first HARQ feedback mode or a default HARQ feedback mode through one code point, wherein the default HARQ feedback mode is a second HARQ feedback mode; or, indicating that the target HARQ feedback mode is the second HARQ feedback mode or the default HARQ feedback mode through one code point, where the default HARQ feedback mode is the first HARQ feedback mode.

The target HARQ feedback mode is implicitly indicated by any one of the following modes:

specifically, if the value of the group identifier is greater than the threshold value, indicating that the target HARQ feedback mode is the first HARQ feedback mode, and if the value of the group identifier is less than or equal to the threshold value, indicating that the target HARQ feedback mode is the second HARQ feedback mode; and if the value of the group identifier is larger than the threshold value, indicating that the target HARQ feedback mode is the second HARQ feedback mode, and if the value of the group identifier is smaller than or equal to the threshold value, indicating that the target HARQ feedback mode is the first HARQ feedback mode.

(2) Indicating through PSSCH transmission resource configuration information carried in the control information, and judging an HARQ feedback mode by a first terminal or a receiving terminal according to PSSCH resource position information, wherein the PSSCH resource positions corresponding to different HARQ feedback modes are different and can be in different resource pools, different frequency domain resources in the same resource pool or different time domain resources in the same resource pool;

specifically, any of the following is included: indicating through a resource pool where the PSSCH is transmitted; indicating by transmitting a frequency domain resource location of the PSSCH; indicated by the time domain resource location of the transmitted PSSCH.

specifically, the indication by the PSFCH transmission resource configuration information carried in the control information includes any one of the following: indicating by transmitting time resources of the PSFCH; indicating by transmitting frequency domain resources of the PSFCH; indicating by transmitting code domain resources of the PSFCH; the indication is made by transmitting the number of PSFCHs.

defining a protocol;

SCI message configuration;

DCI message configuration;

configuring an SI message;

RRC message configuration;

and configuring the MAC message.

An embodiment of the present invention further provides a method for determining an HARQ feedback mode, which is applied to a receiving end, and as shown in fig. 3, the method includes:

step 201: receiving control information and/or data information of a sending end, wherein the control information and/or the data information indicates a target HARQ feedback mode, the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode is that NACK information is fed back when the receiving end fails to receive data, and ACK information is not fed back when the receiving end succeeds in receiving the data; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

step 202: and determining a target HARQ feedback mode according to the control information and/or the data information.

The sending end may be a control node or a first terminal, there is communication transmission between the first terminal and a second terminal, the second terminal is a receiving object for the first terminal to send data, and the receiving end is the second terminal.

In a specific embodiment, the sending end is a control node, and the control information is carried by any one of the following:

downlink control information DCI;

a media access control, MAC, message;

a radio resource control, RRC, message;

system information SI;

sidelink control information SCI message.

In a specific embodiment, the sending end is a first terminal, the first terminal is configured to send data to the receiving end, and the control information is carried by any one of the following:

a SCI message;

a sidelink system information block, SIB, message;

an RRC message;

a packet data convergence protocol PDCP message;

radio link control, RLC, messages

And (6) MAC message.

Specifically, when the transmitting end explicitly indicates the target HARQ feedback mode, the receiving end may determine the target HARQ feedback mode according to any one of the following pieces of control information:

indication information carried by an independent HARQ feedback mode indication domain;

jointly encoding the indication information with useless code points in other indication domains;

when the HARQ feedback mode indication domain and the other indication domains carry out cascade joint coding, a receiving end needs to decode and split, and the indication of the split HARQ feedback indication information to the HARQ feedback mode is judged.

The determining of the target HARQ feedback mode comprises any one of the following steps:

determining whether the target HARQ feedback mode is a first HARQ feedback mode or a second HARQ feedback mode through two code points;

determining a target HARQ feedback mode as a first HARQ feedback mode or a default HARQ feedback mode through one code point, wherein the default HARQ feedback mode is a second HARQ feedback mode;

and determining that the target HARQ feedback mode is a second HARQ feedback mode or a default HARQ feedback mode through one code point, wherein the default HARQ feedback mode is a first HARQ feedback mode.

Specifically, when the sending end implicitly indicates the target HARQ feedback mode, the target HARQ feedback mode is determined according to any one of the following pieces of control information:

(1) group identification;

specifically, determining a target HARQ feedback mode according to the group identifier in the control information includes any one of:

determining a target HARQ feedback mode according to the value of the group identifier;

determining a target HARQ feedback mode according to code points corresponding to the group identifier, wherein one part of code points are used for indicating a first HARQ feedback mode, and the other part of code points are used for indicating a second HARQ feedback mode;

determining a target HARQ feedback mode according to part of bits in the group identifier;

and determining a target HARQ feedback mode according to whether the receiving end has an in-group identifier corresponding to the group identifier.

The method for determining the target HARQ feedback mode according to the value of the group identifier comprises any one of the following steps:

determining that the target HARQ feedback mode is a first HARQ feedback mode if the value of the group identifier is larger than the threshold value, and determining that the target HARQ feedback mode is a second HARQ feedback mode if the value of the group identifier is smaller than or equal to the threshold value;

and determining that the target HARQ feedback mode is the second HARQ feedback mode if the value of the group identifier is larger than the threshold value, and determining that the target HARQ feedback mode is the first HARQ feedback mode if the value of the group identifier is smaller than or equal to the threshold value.

(2) The physical side link shared channel PSSCH transmits resource configuration information;

the determining of the target HARQ feedback mode according to the PSSCH transmission resource configuration information in the control information comprises any one of the following steps:

determining a target HARQ feedback mode according to a resource pool where the PSSCH is transmitted;

determining a target HARQ feedback mode according to the frequency domain resource position of the PSSCH;

and determining a target HARQ feedback mode according to the time domain resource position of the transmitted PSSCH.

(3) A physical sidelink control channel PSCCH transmits resource configuration information;

the determining of the target HARQ feedback mode according to the PSCCH transmission resource configuration information in the control information comprises any one of the following steps:

determining a target HARQ feedback mode according to a resource pool where the PSCCH is transmitted;

determining a target HARQ feedback mode according to the frequency domain resource position of the transmitted PSCCH;

and determining a target HARQ feedback mode according to the time domain resource position of the transmission PSCCH.

(4) A physical sidelink feedback channel PSFCH transmits resource configuration information;

specifically, determining the target HARQ feedback mode according to the PSFCH transmission resource configuration information in the control information includes any one of the following:

determining a target HARQ feedback mode according to the time resource for transmitting the PSFCH;

determining a target HARQ feedback mode according to the frequency domain resource of the transmission PSFCH;

determining a target HARQ feedback mode according to code domain resources for transmitting PSFCH;

and determining a target HARQ feedback mode according to the number of the transmitted PSFCHs.

(5) Indicating domain content;

specifically, the determining of the target HARQ feedback mode according to the content of the indication field in the control information includes any one of the following:

when the code point in the indication domain is a preset code point, determining that the target HARQ feedback mode is a first HARQ feedback mode;

and when the code point in the indication domain is the preset code point, determining that the target HARQ feedback mode is the second HARQ feedback mode.

The indication fields include communication range, RSRP threshold, and geographical area (zone) ID, among other available indication fields.

(6) The sender identifies the source ID.

Specifically, determining a target HARQ feedback mode according to the sender identifier in the control information includes any one of the following:

the receiving end and the first terminal corresponding to the transmitting end identification have RRC connection, the target HARQ feedback mode is determined to be the first HARQ feedback mode, the receiving end and the first terminal corresponding to the transmitting end identification do not have RRC connection, and the target HARQ feedback mode is determined to be the second HARQ feedback mode;

and determining that the target HARQ feedback mode is the second HARQ feedback mode, and determining that the target HARQ feedback mode is the first HARQ feedback mode.

defining a protocol;

SCI message configuration;

DCI message configuration;

configuring an SI message;

RRC message configuration;

and configuring the MAC message.

The technical scheme of the invention is further described by combining the specific implementation modes as follows:

the first implementation mode comprises the following steps:

in this embodiment, the transmitting end displays the indication target HARQ feedback mode. Assuming that the indication of the HARQ feedback mode is indicated by an independent indication field, a default HARQ feedback mode is predefined as a first HARQ feedback mode, and a bit is used in the control information to indicate a target HARQ feedback mode, and when a code point corresponding to the bit is 1, the indicated target HARQ feedback mode is a second HARQ feedback mode, which is equivalent to the reversal of the feedback mode.

After decoding the control information, the receiving end determines the HARQ feedback mode by judging whether the code point corresponding to the bit is 1; and if the code point is 0, performing HARQ feedback by using a first HARQ feedback mode, and if the code point is 1, performing HARQ feedback by using a second HARQ feedback mode.

In another case, if the code point corresponding to the bit indication information corresponds to two feedback manners, that is, it is assumed that code point 0 corresponds to the first HARQ feedback manner and code point 1 corresponds to the second HARQ feedback manner, the receiving end performs feedback manner selection according to the received indication information.

The indication mode of the feedback mode is assumed not to use an independent indication field, but to use a form of concatenated joint coding, and the indication of the HARQ feedback mode and the indication information of the group ID are assumed to be concatenated joint coding, which needs 5 bits, wherein the first 1 bit is used for indicating the HARQ feedback mode, and the last 4 bits are used for indicating the group ID. If the previous bit is 0, the first HARQ feedback mode is assumed to be corresponded, and if the previous bit is 1, the second HARQ feedback mode is corresponded, and the receiving end needs to determine the value of the first bit after decoding to determine the HARQ feedback mode.

The second embodiment:

the present embodiment implicitly indicates the HARQ feedback scheme by associating the group ID with the HARQ feedback scheme. The receiving end is supposed to compare the group ID with the threshold value to determine the HARQ feedback mode; and if the value is smaller than the threshold value, the first HARQ feedback mode is used for feedback, and if the value is larger than the threshold value, the second HARQ feedback mode is used for feedback. Assuming that the threshold is 10, when the value of the group ID is greater than 10, the receiving end performs HARQ feedback in the second HARQ feedback mode, and when the value of the group ID is less than 10, the receiving end performs HARQ feedback in the first HARQ feedback mode.

The receiving end is supposed to determine the HARQ feedback mode according to the code point of the group ID; assuming that the group ID needs to be indicated with 2 bits in the control information, there are 4 code points, respectively: 00. 01, 10, 11. Defining code points 00 and 01 corresponding to a first HARQ feedback mode, and code points 10 and 11 corresponding to a second HARQ feedback mode. Then, after the receiving end decodes the control information, if the received code point is 00, the first HARQ feedback mode is used, and if the received code point is 11, the second HARQ feedback mode is used.

The third embodiment is as follows:

the present embodiment implicitly indicates the HARQ feedback scheme by associating with the psch and/or PSCCH transmission resources.

The present embodiment is premised on that the transmission of pschs and/or PSCCHs corresponding to two different HARQ feedback methods are in different resource pools, as shown in fig. 4. Then the receiving end selects the HARQ feedback mode according to the resource pool where the PSSCH and/or the PSCCH are/is located.

The fourth embodiment:

the present embodiment implicitly indicates the HARQ feedback scheme by associating with the psch and/or PSCCH transmission resources. The present embodiment is premised on that the transmission resources of the pschs and/or PSCCHs corresponding to two different HARQ feedback methods are in the same resource pool, but the transmission resources are separated in the frequency domain, as shown in fig. 5. The receiving end selects the HARQ feedback mode according to the frequency domain position of the psch and/or PSCCH.

The fifth embodiment:

the present embodiment implicitly indicates the HARQ feedback scheme by associating with the psch and/or PSCCH transmission resources. The present embodiment is premised on that the transmission resources of the psch and/or PSCCH corresponding to two different HARQ feedback manners are in the same resource pool, but the transmission resources are separated in the time domain, as shown in fig. 6. The receiving end selects the HARQ feedback mode according to the time domain position of the PSCCH and/or PSCCH.

Embodiment six:

in the embodiment, the HARQ feedback mode is implicitly indicated by the content of the indication field in the control information. The indication field may be a communication range indication field. Assuming that the number of bits of the indication field is 2, that is, there are four corresponding code points, which are: 00. 01, 10, 11. Assume that the protocol predefined code point 00 is a special code point, which means that the HARQ feedback mode to be adopted is the second HARQ feedback mode, and the other code points are all the first HARQ feedback modes. After the receiving end decodes the control information, when the code point of the corresponding communication range indication domain is 00, the second HARQ feedback mode is used for HARQ feedback, otherwise, the first HARQ feedback mode is used for HARQ feedback.

An embodiment of the present invention further provides an indicating apparatus 300 for an HARQ feedback mode, which is applied to a transmitting end, as shown in fig. 7, and includes:

a determining module 310, configured to determine a target HARQ feedback mode, where the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode feeds back NACK information for reception failure of data reception at a receiving end, and ACK information is not fed back for successful data reception; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

an indicating module 320, configured to indicate the target HARQ feedback mode to a receiving end through control information and/or data information.

the number of receiving ends;

quality of Service (QoS) parameters of a Service;

whether RRC connection exists between the first terminal and the receiving end or not;

transmitting a corresponding group identifier for the PSCCH;

the PSSCH transmits a corresponding group identity.

In a specific embodiment, before the sending end is a control node and determines a target HARQ feedback mode, the apparatus further includes:

and the receiving module is used for receiving the auxiliary information reported by the first terminal, and the first terminal is used for sending data to the receiving terminal.

When the sending end is a control node, after determining a target HARQ feedback mode, the indicating module 320 is specifically configured to indicate the target HARQ feedback mode to a first terminal and/or a receiving end through control information, where the first terminal is configured to send data to the receiving end.

downlink Control Information (DCI);

media Access Control (MAC) messages;

radio Resource Control (RRC) messages;

system Information (SI);

sidelink Control Information (SCI) message.

specifically, the indication manner employs any one of the following:

specifically, if the value of the group identifier is greater than the threshold value, the target HARQ feedback mode is indicated as the first HARQ feedback mode, and if the value of the group identifier is less than or equal to the threshold value, the target HARQ feedback mode is indicated as the second HARQ feedback mode; and if the value of the group identifier is larger than the threshold value, indicating that the target HARQ feedback mode is the second HARQ feedback mode, and if the value of the group identifier is smaller than or equal to the threshold value, indicating that the target HARQ feedback mode is the first HARQ feedback mode.

defining a protocol;

SCI message configuration;

DCI message configuration;

configuring an SI message;

RRC message configuration;

and configuring the MAC message.

an SCI message;

a sidelink system information block, SIB, message;

an RRC message;

a packet data convergence protocol PDCP message;

radio link control, RLC, messages

And a MAC message.

determining the target HARQ feedback mode according to auxiliary information, wherein the auxiliary information comprises at least one of the following: the number of receiving terminals, the quality of service (QoS) parameter of a service, whether RRC connection exists between a first terminal and the receiving terminals, the movement speed of the terminal, the channel quality, a destination identifier corresponding to PSCCH transmission, a group identifier corresponding to PSCCH transmission, a destination identifier corresponding to PSSCH transmission, and a group identifier corresponding to PSSCH transmission.

specifically, the indication manner employs any one of the following:

defining a protocol;

SCI message configuration;

DCI message configuration;

configuring an SI message;

RRC message configuration;

and configuring the MAC message.

An embodiment of the present invention further provides an apparatus 400 for determining an HARQ feedback mode, which is applied to a receiving end, as shown in fig. 8, and includes:

a receiving module 410, configured to receive control information and/or data information of a sending end, where the control information and/or data information indicates a target HARQ feedback mode, the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode is a NACK feedback mode for data reception failure of the receiving end, and ACK information is not fed back for data reception success; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

a determining module 420, configured to determine a target HARQ feedback mode according to the control information and/or the data information.

downlink control information DCI;

a media access control, MAC, message;

a radio resource control, RRC, message;

system information SI;

sidelink control information SCI message.

In a specific embodiment, the sending end is a first terminal, and the control information is carried by any one of the following:

a SCI message;

a sidelink system information block, SIB, message;

an RRC message;

a packet data convergence protocol PDCP message;

radio link control, RLC, messages

And (6) MAC message.

Specifically, when the sending end explicitly indicates the target HARQ feedback mode, the determining module 420 determines the target HARQ feedback mode according to any one of the following pieces of control information:

The determining module 420 determines that the target HARQ feedback mode includes any one of the following:

Specifically, when the sending end implicitly indicates the target HARQ feedback mode, the determining module 420 determines the target HARQ feedback mode according to any one of the following pieces of control information:

(1) group identification;

and if the value of the group identifier is greater than the threshold value, determining that the target HARQ feedback mode is the second HARQ feedback mode, and if the value of the group identifier is less than or equal to the threshold value, determining that the target HARQ feedback mode is the first HARQ feedback mode.

(2) A physical side link shared channel PSSCH transmits resource configuration information;

and determining a target HARQ feedback mode according to the time domain resource position of the PSSCH.

and determining a target HARQ feedback mode according to the time domain resource position of the transmitted PSCCH.

(5) Indicating domain content;

(6) The sender identifies the source ID.

defining a protocol;

SCI message configuration;

DCI message configuration;

configuring an SI message;

RRC message configuration;

and configuring the MAC message.

The embodiment of the present invention further provides a communication device, where the communication device includes a processor, a memory, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the processor implements the steps of the method for indicating the HARQ feedback mode or implements the steps of the method for indicating the HARQ feedback mode.

The communication device may be a terminal or a control node, where the terminal includes a receiving end and a first terminal, the control node and the first terminal are configured to implement the step of the method for indicating the HARQ feedback mode, and the receiving end is configured to implement the step of the method for indicating the HARQ feedback mode.

To better achieve the above object, further, fig. 9 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention, where the terminal 50 includes, but is not limited to: a radio frequency unit 51, a network module 52, an audio output unit 53, an input unit 54, a sensor 55, a display unit 56, a terminal input unit 57, an interface unit 58, a memory 59, a processor 510, and a power supply 511. Those skilled in the art will appreciate that the terminal configuration shown in fig. 9 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 51 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 510; in addition, uplink data is transmitted to the base station. Typically, the radio frequency unit 51 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 51 may also communicate with a network and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the terminal via the network module 52, such as facilitating e-mail transmission and reception, web browsing, and streaming media access by the terminal.

The audio output unit 53 may convert audio data received by the radio frequency unit 51 or the network module 52 or stored in the memory 59 into an audio signal and output as sound. Also, the audio output unit 53 may also provide audio output related to a specific function performed by the terminal 50 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 53 includes a speaker, a buzzer, a receiver, and the like.

The input unit 54 is used to receive audio or video signals. The input Unit 54 may include a Graphics Processing Unit (GPU) 541 and a microphone 542, and the Graphics processor 541 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 56. The image frames processed by the graphic processor 541 may be stored in the memory 59 (or other storage medium) or transmitted via the radio frequency unit 51 or the network module 52. The microphone 542 may receive sound, and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 51 in case of the phone call mode.

The terminal 50 also includes any of sensors 55, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 561 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 561 and/or the backlight when the terminal 50 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 55 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described in detail herein.

The display unit 56 is used to display information input by the terminal or information provided to the terminal. The Display unit 56 may include a Display panel 561, which may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The terminal input unit 57 may be used to receive input numeric or character information and generate key signal inputs related to terminal settings and function control of the terminal. Specifically, the terminal input unit 57 includes a touch panel 571 and other input devices 572. The touch panel 571, also referred to as a touch screen, can collect touch operations of the terminal thereon or nearby (such as operations of the terminal on the touch panel 571 or nearby the touch panel 571 using any suitable object or accessory such as a finger, a stylus, etc.). The touch panel 571 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of the terminal, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 510, and receives and executes commands sent by the processor 510. In addition, the touch panel 571 can be implemented by various types, such as resistive, capacitive, infrared, and surface acoustic wave. The terminal input unit 57 may include other input devices 572 in addition to the touch panel 571. In particular, the other input devices 572 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.

Further, the touch panel 571 can be overlaid on the display panel 561, and when the touch panel 571 detects a touch operation on or near the touch panel 571, the touch panel is transmitted to the processor 510 to determine the type of the touch event, and then the processor 510 provides a corresponding visual output on the display panel 561 according to the type of the touch event. Although the touch panel 571 and the display panel 561 are shown in fig. 9 as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 571 and the display panel 561 may be integrated to implement the input and output functions of the terminal, and the implementation is not limited herein.

The interface unit 58 is an interface for connecting an external device to the terminal 50. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 58 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 50 or may be used to transmit data between the terminal 50 and an external device.

The memory 59 may be used to store software programs as well as various data. The memory 59 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 59 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 510 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 59 and calling data stored in the memory 59, thereby integrally monitoring the terminal. Processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor, which mainly handles operating systems, terminal interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 510.

The terminal 50 may further include a power supply 511 (e.g., a battery) for supplying power to various components, and preferably, the power supply 511 may be logically connected to the processor 510 via a power management system, so that functions of managing charging, discharging, and power consumption are performed via the power management system.

In addition, the terminal 50 includes some functional modules that are not shown, and will not be described in detail herein.

A terminal may be a wireless terminal, which may be a wired terminal or a device that provides voice and/or other traffic data connectivity to the terminal, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. Wireless terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN), which may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a Terminal (User Terminal), a Terminal Agent (User Agent), and a Terminal Device (User Device or User Equipment), which are not limited herein.

As shown in fig. 10, the control node 600 includes: antenna 61, radio frequency device 62, baseband device 63. The antenna 61 is connected to a radio frequency device 62. In the uplink direction, the rf device 62 receives information via the antenna 61 and sends the received information to the baseband device 63 for processing. In the downlink direction, the baseband device 63 processes information to be transmitted and transmits the information to the radio frequency device 62, and the radio frequency device 62 processes the received information and transmits the processed information through the antenna 61.

The above-mentioned band processing means may be located in the baseband means 63, and the method performed by the control node in the above embodiment may be implemented in the baseband means 63, the baseband means 63 comprising a processor 64 and a memory 65.

The baseband device 63 may comprise at least one baseband board, for example, and a plurality of chips are disposed on the baseband board, as shown in fig. 10, wherein one chip, for example, the processor 64, is connected to the memory 65 to call up the program in the memory 65 to execute the control node operation shown in the above method embodiment.

The baseband device 63 may further include a network interface 66 for exchanging information with the radio frequency device 62, such as a Common Public Radio Interface (CPRI).

The processor may be a processor or a combination of processing elements, for example, the processor may be a CPU, an ASIC, or one or more integrated circuits configured to implement the methods performed by the above control nodes, for example: one or more microprocessors DSP, or one or more field programmable gate arrays FPGA, or the like. The storage element may be a memory or a combination of a plurality of storage elements.

The memory 65 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (PROM), an erasable programmable Read-only memory (erasabprom, EPROM), an electrically erasable programmable Read-only memory (EEPROM), or a flash memory. The volatile memory may be a Random Access Memory (RAM) which functions as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (staticiram, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (syncronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), enhanced synchronous dynamic random access memory (EnhancedSDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM), and direct memory bus random access memory (DRRAM). The memory 65 described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Specifically, the control node according to the embodiment of the present invention further includes: a computer program stored in the memory 65 and executable on the processor 64, the processor 64 calling the computer program in the memory 65 to execute the method performed by each module shown in fig. 8.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the step of implementing the indication method for an HARQ feedback mode as described above or the step of implementing the determination method for an HARQ feedback mode as described above is implemented, and the same technical effect can be achieved. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part thereof, which essentially contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network side device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processor, storage medium, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

The object of the invention is thus also achieved by a program or a set of programs running on any computing device. The computing device may be a well-known general purpose device. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is also noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. An indication method of a HARQ feedback mode is applied to a sending end and is characterized by comprising the following steps:

indicating the target HARQ feedback mode to a receiving end through control information and/or data information;

the sending end determines a target HARQ feedback mode by using at least one of the following auxiliary information:

transmitting a corresponding group identifier for the PSCCH;

PSSCH transmits corresponding group identification;

indicating through the group mark carried in the control information;

indicating through PSSCH transmission resource configuration information carried in the control information;

indicating through PSCCH transmission resource configuration information carried in the control information;

indicating through PSFCH transmission resource configuration information carried in the control information;

indicating through the content of the indication domain in the control information;

and indicating through the source ID of the sending end identifier in the control information.

2. The method for indicating HARQ feedback mode according to claim 1, wherein the sending end is a control node, and further determines a target HARQ feedback mode by using at least one of the following auxiliary information:

the number of receiving ends;

quality of service, QoS, parameters for the service;

the channel quality.

3. The method for indicating HARQ feedback mode according to claim 2, wherein before determining the target HARQ feedback mode, the method further comprises:

4. The method for indicating the HARQ feedback mode according to claim 1, wherein the sending end is a control node, and after determining the target HARQ feedback mode, the method specifically includes:

5. The method for indicating the HARQ feedback mode according to claim 1, wherein the sending end is a control node, and the control information is carried by any one of the following:

downlink control information DCI;

a media access control, MAC, message;

a radio resource control, RRC, message;

system information SI;

sidelink control information SCI message.

6. The method for indicating the HARQ feedback mode according to claim 1, wherein the sending end is a first terminal, the first terminal is configured to send data to the receiving end, and the control information is carried by any one of the following:

an SCI message;

a sidelink system information block, SIB, message;

an RRC message;

a packet data convergence protocol PDCP message;

radio link control, RLC, messages

And (6) MAC message.

7. The method for indicating the HARQ feedback mode according to claim 1, wherein the sending end is a first terminal, the first terminal is configured to send data to the receiving end, and determining the target HARQ feedback mode includes any one of:

determining the target HARQ feedback mode according to auxiliary information, wherein the auxiliary information further comprises at least one of the following: the number of receiving ends, the QoS parameter of the service, whether the first terminal and the receiving end have RRC connection or not, and the channel quality.

8. The method for indicating the HARQ feedback method according to claim 5 or 6, wherein the target HARQ feedback method is explicitly indicated by any one of the following methods:

indicating through an independent HARQ feedback mode indication domain in the control information;

performing joint coding indication through useless code points in other indication domains in the control information;

and indicating by the HARQ feedback mode indication domain and other indication domains in the control information in a cascading and joint coding manner.

9. The method for indicating the HARQ feedback scheme according to claim 8, wherein the indication scheme is any one of:

10. The method for indicating the HARQ feedback scheme according to claim 1, wherein the indicating by the content of the indication field in the control information includes any one of:

indicating that the target HARQ feedback mode is a first HARQ feedback mode by indicating that the code point in the domain is a preset code point;

and indicating the target HARQ feedback mode as a second HARQ feedback mode by indicating the code point in the domain as a preset code point.

11. The method for indicating the HARQ feedback mode according to claim 1, wherein indicating by the sender id in the control information comprises:

and indicating the target HARQ feedback mode according to whether RRC connection exists between the first terminal corresponding to the sending end identification and the receiving end.

12. The method for indicating the HARQ feedback mode according to claim 1, wherein indicating by the group id carried in the control information includes any one of:

indicating a target HARQ feedback mode through the value of the group identifier;

indicating a target HARQ feedback mode through code points corresponding to the group identifier, wherein one part of code points are used for indicating a first HARQ feedback mode, and the other part of code points are used for indicating a second HARQ feedback mode;

indicating a target HARQ feedback mode through part of bits in the group identifier;

and indicating a target HARQ feedback mode through whether the receiving end has an in-group identifier corresponding to the group identifier.

13. The method for indicating the HARQ feedback mode according to claim 12, wherein indicating the target HARQ feedback mode by the value of the group identifier includes any one of:

the value of the group identifier is greater than a threshold value, the target HARQ feedback mode is indicated to be a first HARQ feedback mode, the value of the group identifier is less than or equal to the threshold value, and the target HARQ feedback mode is indicated to be a second HARQ feedback mode;

and if the value of the group identifier is larger than the threshold value, indicating that the target HARQ feedback mode is the second HARQ feedback mode, and if the value of the group identifier is smaller than or equal to the threshold value, indicating that the target HARQ feedback mode is the first HARQ feedback mode.

14. The method for indicating the HARQ feedback mode according to claim 1, wherein indicating by using the PSCCH transmission resource configuration information or PSCCH transmission resource configuration information carried in the control information includes any one of:

indicating through a resource pool where the PSSCH or the PSCCH is transmitted;

indicating by transmitting the frequency domain resource position of PSSCH or PSCCH;

the indication is made by transmitting the time domain resource location of the psch or PSCCH.

15. The method for indicating the HARQ feedback mode according to claim 1, wherein indicating by using the PSFCH transmission resource configuration information carried in the control information includes any one of:

indicating by transmitting time resources of the PSFCH;

indicating by transmitting frequency domain resources of the PSFCH;

indicating by transmitting code domain resources of the PSFCH;

this is indicated by the number of transmitted PSFCHs.

16. The method for indicating the HARQ feedback mode according to claim 13, wherein the correspondence between the threshold value, the PSFCH transmission resource configuration information, the PSCCH transmission resource configuration information, or the transmission resource configuration information of the PSCCH and the target HARQ feedback mode is obtained by any one of:

defining a protocol;

SCI message configuration;

DCI message configuration;

configuring an SI message;

RRC message configuration;

and configuring the MAC message.

17. A method for determining a HARQ feedback mode is applied to a receiving end and is characterized by comprising the following steps:

determining a target HARQ feedback mode according to the control information and/or the data information;

the target HARQ feedback mode is determined by the sending end by using at least one of the following auxiliary information:

the PSCCH transmits a corresponding group identifier;

PSSCH transmits corresponding group identification;

determining a target HARQ feedback mode according to any one of the following control information:

group identification;

a physical side link shared channel PSSCH transmits resource configuration information;

physical sidelink control channel PSCCH transmission resource configuration information;

a physical sidelink feedback channel PSFCH transmits resource configuration information;

indicating domain content;

the sender identifies the source ID.

18. The method for determining the HARQ feedback mode according to claim 17, wherein the sending end is a control node, and the control information is carried by using any one of the following:

downlink control information DCI;

a media access control, MAC, message;

a radio resource control, RRC, message;

system information SI;

sidelink control information SCI message.

19. The method for determining the HARQ feedback mode according to claim 17, wherein the sending end is a first terminal, the first terminal is configured to send data to the receiving end, and the control information is carried by any one of the following:

a SCI message;

a sidelink system information block, SIB, message;

an RRC message;

a packet data convergence protocol PDCP message;

radio link control, RLC, messages

And (6) MAC message.

20. The method for determining the HARQ feedback method according to claim 18 or 19, wherein the target HARQ feedback method is determined according to any one of the following information in the control information:

and the HARQ feedback mode indication domain and the concatenated joint coding indication information of other indication domains.

21. The method for determining the HARQ feedback scheme according to claim 20, wherein determining the target HARQ feedback scheme comprises any one of:

22. The method for determining the HARQ feedback mode according to claim 17, wherein determining the target HARQ feedback mode according to the content of the indication field in the control information includes any one of:

23. The method for determining the HARQ feedback mode according to claim 17, wherein determining the target HARQ feedback mode according to the sender id in the control information includes any one of:

24. The method for determining the HARQ feedback mode according to claim 17, wherein determining the target HARQ feedback mode according to the group identifier in the control information comprises any one of:

25. The method for determining the HARQ feedback mode according to claim 24, wherein determining the target HARQ feedback mode according to the value of the group identifier includes any one of:

26. The method for determining the HARQ feedback mode according to claim 17, wherein determining the target HARQ feedback mode according to the PSCCH transmission resource configuration information or PSCCH transmission resource configuration information in the control information includes any one of:

determining a target HARQ feedback mode according to a resource pool where the PSSCH or the PSCCH is transmitted;

determining a target HARQ feedback mode according to the frequency domain resource position of the PSSCH or the PSCCH;

and determining a target HARQ feedback mode according to the time domain resource position of the PSSCH or the PSCCH.

27. The method for determining the HARQ feedback mode according to claim 17, wherein determining the target HARQ feedback mode according to the PSFCH transmission resource configuration information in the control information includes any one of:

28. The method for determining the HARQ feedback mode according to claim 25, wherein the correspondence between the threshold value, the PSFCH transmission resource configuration information, the PSCCH transmission resource configuration information, or the PSCCH transmission resource configuration information and the target HARQ feedback mode is obtained by any one of the following methods:

defining a protocol;

DCI message configuration;

SCI message configuration;

configuring an SI message;

RRC message configuration;

and configuring the MAC message.

29. An indicating device of a HARQ feedback mode is applied to a sending end and is characterized by comprising:

the indicating module is used for indicating the target HARQ feedback mode to a receiving end through control information and/or data information;

transmitting a corresponding group identifier for the PSCCH;

PSSCH transmits corresponding group identification;

indicating through the group mark carried in the control information;

30. A device for determining a HARQ feedback mode is applied to a receiving end and is characterized by comprising:

the receiving module is used for receiving control information and/or data information of a sending end, wherein the control information and/or data information indicates a target HARQ feedback mode, the target HARQ feedback mode is selected from a first HARQ feedback mode and a second HARQ feedback mode, the first HARQ feedback mode is that the receiving end fails to receive data and feeds back NACK information, and the data is successfully received and does not feed back ACK information; the second HARQ feedback mode is that the receiving end feeds back NACK information when the data reception fails and feeds back ACK information when the data reception succeeds;

a determining module, configured to determine a target HARQ feedback mode according to the control information and/or the data information;

transmitting a corresponding group identifier for the PSCCH;

PSSCH transmits corresponding group identification;

the determining module determines a target HARQ feedback mode according to any one of the following information in the control information:

group identification;

indicating domain content;

the sender identifies the source ID.

31. A communication device comprising a processor, a memory, and a computer program stored on the memory and running on the processor, wherein the processor when executing the computer program implements the steps of the method for indicating a HARQ feedback scheme according to any one of claims 1 to 16 or implements the steps of the method for determining a HARQ feedback scheme according to any one of claims 17 to 28.

32. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when being executed by a processor, implements the steps of the indication method of HARQ feedback scheme according to any one of claims 1 to 16 or implements the steps of the determination method of HARQ feedback scheme according to any one of claims 17 to 28.