CN117939491A - Side-link feedback method and communication device - Google Patents

Abstract

The application provides a side-link feedback method and a communication device, wherein the method can be applied to the field of side-link communication, and comprises the following steps: transmitting a physical side uplink shared channel PSSCH; determining a discontinuous transmission DTX number in at least two timing periods, one DTX indicating a failure of reception of one feedback information, one feedback information being carried on one physical side uplink feedback channel PSFCH, one PSSCH corresponding to at least two PSFCH, a first timing period of the at least two timing periods including at least one PSFCH of the at least two PSFCH, the DTX number in the first timing period being less than a PSFCH number included in the first timing period; and determining whether the wireless link between the sending end and the receiving end is in a failure state according to the DTX quantity in at least two timing periods. In this way, it is possible to avoid triggering the radio failure detection mechanism too early due to an excessive number of feedback information reception failures.

Description

Side-link feedback method and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a side uplink feedback method and a communications device.

Background

Side Link (SL) communications support direct transmission between terminals. Currently, the third generation partnership project (the 3 ^rd generation partnership project,3 GPP) is discussing the expansion of SL communications over unlicensed spectrum with larger bandwidth, i.e., SL-unlicensed spectrum (SL-unlicensed, SL-U) communications, to support the transmission of higher rate traffic, such as Virtual Reality (VR) traffic, etc.

On unlicensed bands, SL-U communications need to meet channel Listening (LBT). Specifically, when the receiving device feeds back to the transmitting device, it needs to determine whether a physical side uplink feedback channel (PHYSICAL SIDELINK feedback channel, PSFCH) resource is idle, and if so, the receiving device uses the resource to feed back; if not, the receiving device does not use the resource for feedback.

Currently, the 3GPP protocol specifies that one receiving device may send hybrid automatic repeat request (hybrid automatic repeat request, HARQ) information to the transmitting device using a plurality of PSFCH resources, which is used to feed back the demodulation of data sent by the transmitting device. But this mechanism is prone to cause the sending device to prematurely trigger an unreasonable radio link failure (radio link failure, RLF) detection mechanism when the corresponding PSFCH resource location does not receive or detects HARQ information sent by the receiving device, which may affect communication between the two.

Disclosure of Invention

The application provides a side uplink feedback method and a communication device, which can avoid premature false triggering of a radio failure detection mechanism due to excessive times of feedback information reception failure.

It should be appreciated that on unlicensed spectrum, there are other communication devices/terminals that communicate using other technologies, such as WIFI, in addition to the communication devices/terminals that communicate using SL-U technology. In the present application, unless otherwise specified, a communication apparatus/terminal refers to a communication apparatus/terminal that communicates using SL-U technology.

In a first aspect, a side-link feedback method is provided, including: the second communication device transmits a physical side uplink shared channel PSSCH to the first communication device; the second communication device determines the discontinuous transmission DTX number in at least two timing periods, one DTX indicates that the reception of one feedback information fails, one feedback information is carried in one PSFCH, one PSSCH corresponds to at least two PSFCH, a first timing period in the at least two timing periods includes at least one PSFCH of the at least two PSFCH, and the DTX number in the first timing period is smaller than the PSFCH number included in the first timing period; the second communication device determines whether the wireless link between the first communication device and the second communication device is in a failed state according to the number of DTX in at least two timing periods.

Specifically, by employing a timer period, and the number of DTX's in each timer period is less than the number PSFCH included in each timer period, when the first communication apparatus fails to send feedback information due to LBT failure at the resource location of each PSFCH in each timer period, the second communication apparatus can successfully receive or detect feedback information at the resource location of a PSFCH (the PSFCH may be ranked back in a plurality of PSFCH) by maintaining operation of the plurality of timer periods, and the number of DTX's does not exceed the number threshold.

In summary, by introducing the timing periods, the present application can control the number of DTX in each timing period to avoid triggering the RLF detection mechanism too early due to the excessive number of DTX, thereby supporting smooth communication between the first communication apparatus and the second communication apparatus.

In one possible implementation, the second communication device determines whether a radio link between the first communication device and the second communication device is in a failure state according to a DTX number in at least two timing periods, including: when the number of DTX in at least two timing periods is equal to the number threshold, the second communication device terminates the timing; the second communication device determines that the radio link is in a failed state.

Thus, the application supports the second communication device to accurately send abnormal wireless link state, and improves SL communication efficiency.

In one possible implementation, the second communication device determines whether a radio link between the first communication device and the second communication device is in a failure state according to a DTX number in at least two timing periods, including: when receiving the first feedback information corresponding to the PSSCH, the second communication device terminates timing; the second communication device determines that a wireless link between the first communication device and the second communication device is in a normal state.

In a possible implementation manner, the method further includes: the second communication device sends first indication information to the first communication device indicating a resource location of each PSFCH of the at least two PSFCH.

In this manner, the first communication device may send feedback information to the second communication device at the resource location PSFCH indicated by the second communication device, so that the second communication device may detect the feedback information at the corresponding resource location PSFCH.

In one possible implementation, the time interval between any two adjacent PSFCH time-domain positions in the at least two PSFCH is greater than or equal to the time interval threshold.

In this manner, over-distribution of the plurality PSFCH of locations in the time domain can be avoided, resulting in the first communication device triggering the RLF detection mechanism prematurely due to LBT failure at the plurality of over-distributed PSFCH of resource locations.

In a possible implementation manner, the method further includes: the second communication device sends second indication information to the first communication device, wherein the second indication information comprises a time interval threshold value; the time interval between any two adjacent PSFCH time domain locations of the at least two PSFCH is greater than or equal to the time interval threshold.

In this manner, over-distribution of the plurality PSFCH of locations in the time domain can be avoided, resulting in the first communication device triggering the RLF detection mechanism prematurely due to LBT failure at the plurality of over-distributed PSFCH of resource locations.

In a possible implementation manner, the method further includes: the second communication device transmits third indication information for indicating a maximum time interval between the PSSCH and PSFCH corresponding to the PSSCH to the first communication device.

In a second aspect, a side-link feedback method is provided, including: the first communication device receives the PSSCH from the second communication device; the first communication device sends feedback information to the second communication device at each PSFCH of the at least two PSFCH corresponding to the PSSCH, and a time interval between time domain positions of any two adjacent PSFCH of the at least two PSFCH is greater than or equal to a time interval threshold.

In a possible implementation manner, before each PSFCH of the at least two PSFCH corresponding to the PSSCH sends feedback information, the method further includes: the first communication device configures a resource location for each PSFCH of the at least two PSFCH according to the time interval threshold.

In a possible implementation manner, before each PSFCH of the at least two PSFCH corresponding to the PSSCH sends feedback information, the method further includes: the first communication device receives first indication information from the second communication device indicating a resource location of each PSFCH of the at least two PSFCH.

In a possible implementation manner, the method further includes: the first communication device receives second indication information from the second communication device, which indicates a maximum time interval between the PSSCH and PSFCH corresponding to the PSSCH.

In a third aspect, there is provided a communication apparatus comprising: a transceiving unit configured to transmit the PSSCH to the first communication device; a processing unit, configured to determine a number of DTX's for discontinuous transmission in at least two timing periods, where one DTX indicates a failure to receive one feedback message, one feedback message is carried in one PSFCH, one PSSCH corresponds to at least two PSFCH, a first timing period of the at least two timing periods includes at least one PSFCH of the at least two PSFCH, and the number of DTX's in the first timing period is less than a PSFCH number included in the first timing period; the processing unit is further configured to determine whether a radio link between the first communication device and the communication device is in a failed state according to the number of DTX's in at least two timing periods.

In a possible implementation manner, the processing unit is further configured to: terminating the timing when the number of DTX in at least two timing periods is equal to the number threshold; it is determined whether a wireless link between the first communication device and the communication device is in a failed state.

In a possible implementation manner, the processing unit is further configured to: when receiving the first feedback information corresponding to the PSSCH, terminating timing; a determination is made that a wireless link between a first communication device and the communication device is in a normal state.

In a possible implementation manner, the transceiver unit is further configured to send first indication information to the first communication device, where the first indication information is used to indicate a resource location of each PSFCH of the at least two PSFCH.

In one possible implementation, the time interval between any two adjacent PSFCH time-domain locations in the at least two PSFCH is greater than or equal to the time interval threshold.

In a possible implementation manner, the transceiver unit is further configured to send second indication information to the first communication device, where the second indication information includes a time interval threshold; the time interval between any two adjacent PSFCH time domain locations of the at least two PSFCH is greater than or equal to the time interval threshold.

In a possible implementation manner, the transceiver unit is further configured to send third indication information to the first communication device, where the third indication information is used to indicate a maximum time interval between PSSCH and PSFCH corresponding to the PSSCH.

In a fourth aspect, there is provided a communication apparatus comprising: a transceiving unit for receiving the PSSCH from the second communication device; the transceiver unit is further configured to send feedback information to the second communication device at each PSFCH of the at least two PSFCH corresponding to the PSSCH, and a time interval between time domain positions of any two adjacent PSFCH of the at least two PSFCH is greater than or equal to a time interval threshold.

In a possible implementation, the apparatus further includes a processing unit configured to configure the resource location of each PSFCH of the at least two PSFCH according to the time interval threshold.

In a possible implementation manner, the transceiver unit is further configured to receive first indication information from the second communication device, where the first indication information is used to indicate a resource location of each of the at least two PSFCH to PSFCH.

In a possible implementation manner, the transceiver unit is further configured to receive second indication information from the second communication apparatus, where the second indication information is used to indicate a maximum time interval between PSSCH and PSFCH corresponding to the PSSCH.

In a fifth aspect, a communication device is provided, comprising a processor for causing the communication device to perform the method of any one of the first aspect and any one of the possible implementations of the first aspect by executing a computer program or instructions, or by logic circuitry; or cause the communication device to perform the method of any one of the second aspect and any one of the possible implementations of the second aspect.

In a possible implementation, the communication device further includes a memory for storing the computer program or instructions.

In a possible implementation, the communication device further comprises a communication interface for inputting and/or outputting signals.

In a sixth aspect, a communication device is provided, comprising logic circuitry and an input-output interface for inputting and/or outputting signals, the logic circuitry being adapted to perform the method of any one of the first aspect and any one of the possible implementations of the first aspect; or for performing the second aspect and any one of the possible implementations of the second aspect.

In a seventh aspect, there is provided a computer readable storage medium comprising a computer program or instructions which, when run on a computer, cause the method of any one of the first aspect and any one of the possible implementations of the first aspect to be performed; or causing the second aspect and any one of the methods of any one of the possible implementations of the second aspect to be performed.

In an eighth aspect, a computer program product is provided, comprising instructions which, when run on a computer, cause the method of any one of the first aspect and any one of the possible implementations of the first aspect to be performed; or causing the second aspect and any one of the methods of any one of the possible implementations of the second aspect to be performed.

A ninth aspect provides a computer program which, when run on a computer, causes the method of any one of the first aspect and any one of the possible implementations of the first aspect to be performed; or causing the second aspect and any one of the methods of any one of the possible implementations of the second aspect to be performed.

Drawings

Fig. 1 is a schematic diagram of a suitable communication system 100 in accordance with an embodiment of the present application.

Fig. 2 is a schematic diagram of a configuration of transmission opportunities of PSFCH.

Fig. 3 is a schematic diagram of an interactive flow of a side-link feedback method 300 according to an embodiment of the application.

Fig. 4 is a schematic diagram showing the correspondence among the timing period, PSFCH number and DTX number according to an embodiment of the present application.

Fig. 5 is a schematic block diagram of a communication device 500 of an embodiment of the present application.

Fig. 6 is a schematic block diagram of a communication device 600 of an embodiment of the present application.

Fig. 7 is a schematic block diagram of a communication device 700 of an embodiment of the present application.

Fig. 8 is a schematic block diagram of a communication device 800 of an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication device 900 of an embodiment of the present application.

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: non-terrestrial communication network (non-TERRESTRIAL NETWORK, NTN) systems such as long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), fifth generation (5 ^th generation, 5G) systems, or new air interface (NR), sixth generation (6 ^th generation, 6G) systems, and the like, which evolve after 5G. The satellite communication system comprises a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station may also communicate with a terrestrial base station. The satellite may be used as a base station or as a terminal device. The satellite can refer to an unmanned aerial vehicle, a fire balloon, a low-orbit satellite, a medium-orbit satellite, a high-orbit satellite and other non-ground base station or non-ground equipment.

The technical scheme of the embodiment of the application is applicable to the scenes of the isomorphic network and the heterogeneous network, is also unlimited to the transmission points, can be multipoint cooperative transmission between macro base stations and macro base stations, between micro base stations and between macro base stations and micro base stations, and is applicable to FDD/TDD systems. The technical scheme of the embodiment of the application is not only suitable for low-frequency scenes (sub 6G), but also suitable for high-frequency scenes (more than 6 GHz), terahertz, optical communication and the like. The technical scheme of the embodiment of the application not only can be suitable for communication between the network equipment and the terminal, but also can be suitable for communication between the network equipment and the terminal, communication between the terminal and the terminal, communication between the Internet of vehicles, the Internet of things, industrial Internet and the like.

The technical scheme of the embodiment of the application can also be applied to the scene that the terminal is connected with a single base station, wherein the base station connected with the terminal and a Core Network (CN) connected with the base station are of the same standard. For example, CN is 5G Core, the base station is corresponding to 5G base station, and the 5G base station is directly connected with 5G Core; or CN is 6G Core, the base station is 6G base station, and the 6G base station is directly connected with the 6G Core. The technical scheme of the embodiment of the application can also be applied to a double-connection (dual connectivity, DC) scene that the terminal is connected with at least two base stations.

The technical scheme of the embodiment of the application can also use macro-micro scenes formed by base stations with different forms in a communication network, for example, the base stations can be satellites, air balloon stations, unmanned aerial vehicle stations and the like. The technical scheme of the embodiment of the application is also suitable for the scene that the wide coverage base station and the small coverage base station exist at the same time.

The technical scheme of the embodiment of the application can also be applied to wireless communication systems of 5.5G and 6G and later, and applicable scenes include but are not limited to scenes such as ground cellular communication, NTN, satellite communication, high altitude communication platform (high altitude platform station, HAPS) communication, vehicle-to-everything, V2X, access-backhaul integrated (INTEGRATED ACCESS AND backhaul, IAB), reconfigurable intelligent surface (reconfigurable intelligent surface, RIS) communication, indoor business and the like.

The technical scheme of the embodiment of the application can also be applied to SL communication of direct communication between terminal equipment, namely, the shared channel and the feedback channel are transmitted and received between the terminal equipment.

It should be appreciated that the technical solution of the embodiment of the present application may also be suitable for indoor commercial scenarios, such as, for example, high-definition screen projection from a mobile phone to a large screen, VR video transmission from a mobile phone to VR glasses, etc.

The terminal in the embodiment of the present application may be a device with a wireless transceiver function, and specifically may refer to a User Equipment (UE), an access terminal, a subscriber unit (subscriber unit), a subscriber station, a mobile station (mobile station), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a wireless device which may be a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a Personal Digital Assistant (PDA), a customer terminal device (customer-premises equipment, CPE), a point of sale (POS) set, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a communication device onboard an aerial plane, a wearable device, an unmanned aerial vehicle, a robot, a device-to-device communication (D2D) terminal, a V2X terminal, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned (SELF DRIVING), a remote medical (remote) terminal, a smart terminal in a smart network (35, a smart device in a smart system (35, a smart system for example of an application, or the like).

The device for realizing the functions of the terminal equipment in the embodiment of the application can be the terminal equipment; or a device, such as a chip system, capable of supporting the terminal device to implement the function. The device can be installed in or matched with the terminal equipment. In the embodiment of the application, the chip system can be composed of chips, and can also comprise chips and other discrete devices.

The network equipment in the embodiment of the application has the wireless receiving and transmitting function and is used for communicating with the terminal equipment. The access network device may be a node in a radio access network (radio access network, RAN), also referred to as a base station, also referred to as a RAN node. An evolved Node B (eNB or eNodeB) in LTE; or a base station in a 5G network such as a gndeb (gNB) or a base station in a public land mobile network (public land mobile network, PLMN) that evolves after 5G, a broadband network service gateway (broadband network gateway, BNG), a convergence switch or a 3GPP access device, etc.

The network device in the embodiment of the present application may further include various forms of base stations, for example: macro base stations, micro base stations (also called small stations), relay stations, transmission points (TRANSMITTING AND RECEIVING points, TRP), transmission points (TRANSMITTING POINT, TP), mobile switching centers, and devices-to-devices (D2D), devices that perform base station functions in vehicle-to-everything, V2X), machine-to-machine (M2M) communications, and the like, and may also include centralized units (centralized unit, CU) and Distributed Units (DUs) in a cloud access network (cloud radio access network, C-RAN) system, network devices in an NTN communication system, and embodiments of the present application are not limited in particular.

The device for implementing the function of the network device in the embodiment of the present application may be a network device, or may be a device capable of supporting the network device to implement the function, for example, a chip system. The apparatus may be installed in or used in cooperation with a network device. The chip system in the embodiment of the application can be composed of chips, and can also comprise chips and other discrete devices.

Fig. 1 is a schematic diagram of a suitable communication system 100 in accordance with an embodiment of the present application. As shown in fig. 1, communication system 100 includes a network device 110, a terminal device 120, and a terminal device 130. The number of terminal devices and network devices included in the communication system 100 is not limited in the embodiments of the present application.

It should be understood that fig. 1 is only exemplary and is not intended to limit the scope of the present application as claimed. Terminal device 120 and terminal device 130 may be any of the terminal devices listed above, and network device 110 may be any of the network devices listed above.

In the communication system 100, communication between the terminal device 120 and the terminal device 130 can be performed through a PC5 interface, that is: SL communication is performed between terminal device 120 and terminal device 130. Communication between terminal device 120 or terminal device 130 and network device 110 may also be via an air interface (Uu).

Some terms related to the technical solutions disclosed in the present application will be briefly described below.

First, SL-U.

As previously mentioned, SL-U communications need to meet at least LBT.

Specifically, LBT is divided into two classes: type 1-LBT and type 2-LBT. Among these, type 1-LBT requires counter backoff (i.e., performing channel listening multiple times), which is typically long. The type 2-LBT only requires a fixed time of interception of the channel, which is typically short. Since the time of channel interception of the type 2-LBT is short, the probability that the terminal device accesses the channel through the type 2-LBT is high.

When the terminal equipment needs to transmit data, it needs to perform channel interception on one or more 20MHz channels corresponding to the frequency domain resources occupied by the transmitted data. Wherein, the granularity of the channel monitored by the terminal equipment is 20MHz.

In addition, the terminal device can obtain two results when executing the channel access process: the channel access procedure is complete and the channel access procedure is incomplete. Specifically, the time-frequency resource used for data transmission has a plurality of time-domain initial positions, and the terminal equipment determines that the channel is idle before the time-domain initial position of any time-frequency resource, and considers that the channel access process is completed; and determining that the channel is busy before the time domain starting positions of all the time-frequency resources, and considering that the channel access process is not completed.

In summary, the terminal device needs to perform LBT on the data transmission resource first, and can use the resource to perform data transmission when determining that the resource is in the idle channel.

Second, PSFCH.

In particular, PSFCH feedback mechanisms are configured/preconfigured for the resource pool. Wherein, the transmission opportunity (occasin) of PSFCH is periodically configured on the resource pool, the Period can be one value (in time slot unit) of {0,1,2,4} and is configured by RRC signaling sl-PSFCH-Period-r 1. When the configured period is 0, transmission of hybrid automatic repeat request (hybrid automatic repeat request, HARQ) information is not supported on behalf of the resource pool. When the configured period is 1,2 or 4, the transmission of HARQ information is supported on behalf of the resource pool.

One of the resource pools includes time domain resources and frequency domain resources used for transmitting the PSSCH. The minimum time-frequency unit for transmitting PSSCH in the resource pool specified by the existing standard occupies one time slot (slot) in the time domain and one sub-channel (sub-channel) in the frequency domain. The PSSCH may occupy one or more of the minimum time-frequency units described above. For each slot in the resource pool, its associated PSFCH transmission occasion is located on the closest PSFCH transmission occasion after a number of slots (configured by RRC signaling sl-MINTIMEGAPPSFCH-r 16) from that slot.

Fig. 2 is a schematic diagram of a configuration of transmission opportunities of PSFCH. As shown in fig. 2, the configuration period of the transmission opportunity of PSFCH is four slots. Wherein PSFCH is located in slot 2, the transmission opportunity comprises an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol (hereinafter referred to as symbol a) for transmission PSFCH. At this point, a total of 4 slots are associated to the PSFCH transmission opportunities on symbol a (e.g., symbol a in slot 6 is associated with slots 1-4), i.e., the receiving device needs to feed back all possible physical side uplink shared channels (PHYSICAL SIDELINK SHARED CHANNEL, PSSCH) on four slots on symbol a.

In SL-U, after receiving the PSSCH, if the receiving device cannot transmit HARQ information at the corresponding PSFCH resource location because of LBT failure, the transmitting device considers this as a discontinuous transmission (discontinuous transmission, DTX). In order to avoid failure to successfully transmit HARQ information due to LBT failure, it may be considered to employ a transmission scheme of a plurality of PSFCH transmissions of HARQ information, i.e., a plurality PSFCH. However, when the receiving device cannot transmit HARQ information due to LBT failure at all of the plurality PSFCH of resource positions, the transmitting device triggers the RLF detection mechanism because the DTX number reaches the DTX number threshold, which may affect communication between the transmitting device and the receiving device. For example, the transmitting device may break its communication link with the receiving device.

In view of the above-mentioned technical problems, the present application provides a side uplink feedback method and a communication device, which can avoid triggering a radio failure detection mechanism too early due to excessive times of feedback information reception failure.

The side-link feedback method and the communication device according to the embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 3 is a schematic diagram of an interactive flow of a side-link feedback method 300 according to an embodiment of the application. The method flow in fig. 3 may be performed by the first communication device and the second communication device, or by a module and/or a device (e.g., a chip or an integrated circuit, etc.) installed in the first communication device and the second communication device and having corresponding functions, which is not limited by the present application. The first communication device is a terminal device, and the second communication device is a terminal device. The first communication device and the second communication device are described below as examples. As shown in fig. 3, the method 300 includes:

s310, the second communication apparatus transmits pssch#a to the first communication apparatus.

Accordingly, the first communication device receives the pssch#a from the second communication device.

Specifically, the second communication apparatus transmitting pssch#a to the first communication apparatus may be: the second communication device transmits data a to the first communication device via PSSCH #a, that is, the data a is carried on the PSSCH #a. Accordingly, the first communication apparatus receiving the pssch#a from the second communication apparatus may be: the first communication device receives data a transmitted by the second communication device and carried over pssch#a.

S320, the first communication device transmits feedback information at each PSFCH of the at least two PSFCH corresponding to pssch#a.

Specifically, after successfully demodulating or receiving pssch#a, the first communication apparatus determines a plurality PSFCH (at least two PSFCH) from the pssch#a. The mapping relationship between the plurality PSFCH of PSSCH#A is not limited in the present application. Illustratively, the mapping relationship between the plurality PSFCH and the PSSCH#A is protocol predefined; or the mapping relationship between the plurality PSFCH and the pssch#a is indicated by the second communication device to the first communication device. Or the plurality PSFCH is indicated by the second communication device to the first communication device. In summary, the first communication device can determine a plurality PSFCH corresponding to pssch#a.

The first communication device may send feedback information on each of the at least two PSFHC, PSFCH described above. The feedback information may include HARQ information, or may include other types of information, which is not limited in the present application.

As described above, the resource location of the portion PSFCH of the plurality PSFCH may fail to send the feedback information due to LBT failure, and the second communication device may fail to receive or detect the feedback information at the corresponding resource location PSFCH, and the second communication device performs DTX counting. If the DXT number reaches the DTX number threshold, the second communication apparatus determines that the radio link between the first communication apparatus and the second communication apparatus is in a failure state, and detects the radio link, thereby affecting communication between the first communication apparatus and the second communication apparatus.

In one possible implementation manner, when the first communication apparatus successfully transmits the feedback information at the resource location of one PSFCH of the plurality PSFCH, the first communication apparatus may not transmit the feedback information any more, that is: the remaining PSFCH is no longer used to send feedback information.

Optionally, the first communication device may further continue to send feedback information using the remaining PSFCH.

Optionally, after the first communication device receives the pssch#a, the first communication device starts timing (duration T0) if the above-mentioned resource positions of the plurality PSFCH all fail to send the feedback information due to LBT failure (it can be understood that the first communication device can re-determine the plurality PSFCH). The starting position of the duration T0 is the time slot in which the last one PSFCH of the at least two PSFCH is located or the first time slot after the last one, and may also be the first symbol in which the last one PSFCH is located. Accordingly, the first communication device performs feedback on the redetermined plurality PSFCH. Wherein a time interval between the last PSFCH of the newly determined plurality PSFCH and the pssch#a does not exceed the duration T0.

In addition, the first communication device may perform feedback at the newly determined resource locations PSFCH, and may send feedback information only when the LBT is successful. When the timer exceeds T0, the first communication device stops transmitting the feedback information. Or when the first communication device feeds back the above newly determined resource positions PSFCH, after sending the feedback information, the first communication device does not use the remaining resource positions PSFCH to feed back. At this time, the first communication device may stop the timer.

In summary, the plurality PSFCH of the first communication device sending the feedback information to the second communication device may be determined by the indication of the second communication device, or may be determined by the first communication device, which is not limited in this aspect of the application.

S330, the second communication device determines the DTX quantity in at least two timing periods.

To avoid triggering the RLF detection mechanism too early due to too many DTX's (or too many DTX's in a short time), the second communication device starts a Timer a (or sl-HARQ-Timer) after transmitting pssch#a or the resource location of the first PSFCH of the above mentioned plurality PSFCH. The application supports that the counter A adopts sequential timing or reverse timing.

For example, if the counter a counts sequentially, the timer a is reset and re-counted when it is set to count sequentially for 10 ms, and each re-counted time can be taken as a counting period. For example, if counter a counts down, setting timer a counts down from 10 ms to 0 may count back, each time it can be taken as a count period. Thus, the at least two timing periods described above can be understood as: the timer A carries out multiple times of cycle timing in the set duration. Wherein, each cycle of the timer A can be used as one timing period of the timer A.

In S330, it can be appreciated that a DTX indicates a failure to receive a feedback message, which is carried over PSFCH. The failure of receiving the feedback information can be understood as: the second communication device does not successfully receive or detect the feedback information at the corresponding PSFCH resource location. For example, the second communication device may not successfully receive or detect the feedback information at the corresponding PSFCH resource location due to the first communication device failing to successfully transmit the feedback information due to LBT failure, or may also be due to the first communication device successfully transmitting the feedback information, but the channel condition between the second communication device and the first communication device is not good, which is not limited by the present application.

Wherein any one of the at least two timing periods (hereinafter, the timing period S is described as an example of any one of the at least two timing periods) includes at least one PSFCH. The period of timing S includes PSFCH which is part PSFCH of the at least two PSFCH described above. For example, pssch#a corresponds to PSFCH number of 6, and the timer period S may include the first three or the first two PSFCH of the 6 PSFCH. A description of the timing period S can be found in fig. 4.

Illustratively, when PSSCH#A corresponds to PSFCH #1, PSFCH #2, PSFCH #3, PSFCH #4, PSFCH #5, and PSFCH #6 (ordered sequentially in the time domain position of PSFCH), the timing period S can include PSFCH #1, PSFCH #2, PSFCH #3; the timing period S may also include PSFCH #1, PSFCH #2; the timing period S may also include PSFCH #1, and so on.

In one possible implementation manner, the time length of each of the at least two timing periods may be the same or different, which is not limited by the present application. For convenience of description, the present application is described by taking the same time length of each timing period as an example, but the present application is not limited to the scenario that the time length of each timing period is different.

In S330, the second communication device determines the DTX number in at least two timing periods, which may be: the second communication device determines the number of DTX's in at least two timing periods. The number of DTX's in at least two timing periods may be continuously statistically determined by the second communication device, or may be discontinuously statistically determined by the second communication device. For example, the at least two timing periods include 3 timing periods, namely timing period #1, timing period #2 and timing period #3. The second communication device may count the DTX numbers of the timing periods #1, #2, and #3, or may count only the DTX numbers of the timing periods #1 and #3, and may not count the DTX numbers of the timing periods # 2.

In addition, the number of DXTs counted per timing period may be less than PSFCH times during the timing period. Illustratively, when the timing period S includes three PSFCH, the number of DTX' S in the timing period S is less than 3. For example, the number of DTX' S in the timing period S may be 1 or 2. See in particular fig. 4.

Fig. 4 is a schematic diagram of the correspondence between the number of timing periods, PSFCH and the number of DTX according to an embodiment of the present application. As shown in fig. 4, the at least two timing periods include two timing periods, namely timing period #1 and timing period #2, respectively, and the plurality PSFCH includes 6 PSFCH. Wherein, the number of PSFCH in each timing period is 3, and the number of DXT in each timing period is 1. The above-described time period S may be the following time period #1 or time period #2.

The second communication device may maintain a counter Q with an initial value of 0. For example, the number of PSFCH included in each timing period is 3, the number of DTX that can be counted in each timing period is 1, the second communication device increases the value of the counter Q by one (the value of the counter Q is 1) when no feedback information is successfully received or detected at the resource location of the first PSFCH in the timing period #1, and does not increase the value of the counter Q by one (the value of the counter Q is still 1) when no feedback information is successfully received or detected at the resource locations of the second PSFCH and the third PSFCH. The second communication device increments the value of the counter Q (the value of the counter Q is 2) when the feedback information is not successfully received or detected at the first PSFCH resource location in the timer period #2, and does not increment the counter Q (the value of the counter Q is still 2) when the feedback information is not successfully received or detected at both the second PSFCH and third PSFCH resource locations.

Alternatively, if the resource location of PSFCH in each timing period has been determined, the second communication device counts the failure to receive the feedback information on the second PSFCH in timing period #1, and does not count the failure to receive the feedback information on the first PSFCH, for example. In other words, the present application does not limit the resource location of PSFCH corresponding to DTX counted by the second communication apparatus in each timing period.

S340, the second communication device determines whether the wireless link between the first communication device and the second communication device is in a failure state according to the DTX quantity in at least two timing periods.

Specifically, if the number of DTX's in the at least two timing periods reaches the number threshold, the second communication apparatus determines that the radio link between the first communication apparatus and the second communication apparatus is in a failed state; if the number of DTX's in the at least two timing periods does not reach the number threshold, the second communication apparatus determines that the radio link between the first communication apparatus and the second communication apparatus is in a normal state. Or when the second communication device receives the feedback information corresponding to the pssch#a in any one of the above-mentioned timing periods, the second communication device may determine that the radio link between the first communication device and the second communication device is in a normal state, and may terminate the operation of the timer a.

Specifically, by employing a timer period, and the number of DTX's in each timer period is less than the number PSFCH included in each timer period, when the first communication apparatus fails to send feedback information due to LBT failure at the resource location of each PSFCH in each timer period, the second communication apparatus can successfully receive or detect feedback information at the resource location of a PSFCH (the PSFCH may be ranked back in a plurality of PSFCH) by maintaining operation of the plurality of timer periods, and the number of DTX's does not exceed the number threshold.

In one possible implementation, the number threshold (or DTX-MaxCount) and counter a are determined by the second communication device by receiving configuration information sent by the base station/configuration parameters from system information block 12 (system information block, SIB 12)/pre-configuration/upper layers.

By introducing the timing period, the application can control the DTX quantity in each timing period to avoid triggering the RLF detection mechanism too early due to excessive DTX quantity, thereby supporting smooth communication between the first communication device and the second communication device.

In one possible implementation, the method 300 further includes:

s340a1, when the number of DTX' S in at least two timing periods is equal to the number threshold, terminating the timing by the second communication apparatus;

S340b1, the second communication device determines that the radio link between the first communication device and the second communication device is in a failure state.

Specifically, the number of DTXs in at least two timing periods is a cumulative statistic that is accumulated over the operation of a plurality of timing periods. When the number of DTX's in at least two timing periods is equal to the number threshold, the second communication device terminates the timing (or terminates the cyclic timing of timer a) and determines that the radio link between the first communication device and the second communication device is in a failed state.

In one possible implementation, the method 300 further includes:

s340a2, when receiving the feedback information B corresponding to the pssch#a, the second communication device terminates the timer;

s340b2, the second communication device determines that the wireless link between the first communication device and the second communication device is in a normal state.

Specifically, when the second communication device successfully receives or detects the feedback information B corresponding to the pssch#a in a certain one of the at least two timing periods, the second communication device terminates the timing (or terminates the cycle timing of the timer a). Accordingly, the second communication device may also determine that the wireless link between the first communication device and the second communication device is in a normal state (non-failure state).

In one possible implementation, the method 300 further includes:

s310a, the second communication device transmits indication information 1 for indicating the resource location of each PSFCH of the at least two PSFCH to the first communication device.

Accordingly, the first communication device receives the indication information 1 from the second communication device and determines the resource location of each PSFCH of the at least two PSFCH described above based on the indication information 1. Further, the first communication device transmits feedback information to the second communication device based on the resource location of each PSFCH indicated by the indication information 1.

In one possible implementation, the indication information 1 may be side uplink control information (SL control information, SCI) for scheduling pssch#a, or may be a separate indication message.

It should be understood that the execution sequence of S310a may be after S310, before S320, or may be performed simultaneously with S310, which is not limited in the present application.

In one possible implementation, the method 300 further includes:

S310b, the second communication device sends indication information 2 to the first communication device, where the indication information is used to indicate a duration T0 between the pssch#a and PSFCH corresponding to the pssch#a. The description of the duration T0 may be referred to the above description, and will not be repeated here.

In one possible implementation, the indication information 2 is radio resource control (radioresource control, RRC) information sent by the second communication device to the first communication device. The RRC information carries a duration T0, which is used to indicate a maximum time interval between the pssch#a and the corresponding PSFCH.

Alternatively, the indication information 2 is SCI for scheduling pssch#a. Wherein the SCI carries a duration T0. The duration T0 may be a configuration value from a system level base station or a fixed value (SPECIFIED VALUE). The time period T0 may be embodied by a timer or a counter, for example. For example, when the duration T0 is embodied by a timer, it indicates: the first communication device sends a plurality of feedback information to the second communication device within the duration set by the timer until the time length preset by the timer. When the time period T0 is embodied by a counter, it indicates: the first communication device sends a plurality of feedback information to the second communication device in the time length corresponding to each number counted by the counter until the number counted by the counter reaches a preset value. Specifically, the counter may set 5 numbers, each corresponding to a respective time length, and the duration T0 is equal to the total time length corresponding to 5 numbers.

Specifically, if the first communication device successfully transmits the feedback information at the resource locations of the plurality PSFCH indicated by the second communication device, the plurality PSFCH of resources may not be selected by the time period T0. In other words, when the first communication device does not successfully transmit the feedback information at the resource locations of the plurality PSFCH indicated by the second communication device, a plurality of PSFCH resources (where the plurality PSFCH of resources is self-determining by the first communication device) may be selected for the duration T0.

It should be understood that the execution sequence of S310a may be after S310, before S320, or may be performed simultaneously with S310, which is not limited in the present application.

It will be appreciated that S310b may be an optional step or an essential step, which is not limited by the present application.

In one possible implementation, the time interval between any two adjacent PSFCH time-domain positions in the at least two PSFCH is greater than or equal to the time interval threshold. Illustratively, at least two PSFCH include PSFCH #1, PSFCH #2, PSFCH #3, and PSFCH #4. Wherein the spacing between time domain positions between PSFCH #1 and PSFCH #2 is greater than or equal to T1, and the spacing between time domain positions between PSFCH #3 and PSFCH #4 is greater than or equal to T1. In this way, over-distribution of the positions of the plurality PSFCH in the time domain can be avoided, resulting in triggering of the RLF detection mechanism by the first communication device due to LBT failure at the resource positions of the plurality of over-distributed PSFCH.

Specifically, the second communication apparatus may configure the time domain positions of any two adjacent PSFCH in the at least two PSFCH above according to the time interval threshold, so that the time interval of any two adjacent PSFCH in the time domain positions is greater than or equal to the time interval threshold. Wherein the time interval threshold may be determined by the second communication device based on configuration information of the network device/from SIB 12/pre-configuration/upper layer configuration parameters (e.g., sl-PSFCH-Gap). Or the time interval threshold is indicative of the first communication device to the second communication device. A schematic diagram of the time interval between any two adjacent PSFCH time domain positions being greater than or equal to the time interval threshold may be seen in fig. 4 as the time interval between counted PSFCH and non-counted PSFCH.

In addition, the first communication device may also configure the time interval between any two adjacent PSFCH time-domain positions in the at least two PSFCH according to the time interval threshold. Wherein the time interval threshold may be determined by the first communication device based on configuration information of the network device/from SIB 12/pre-configuration/upper layer configuration parameters (e.g., sl-PSFCH-Gap). Or the time interval threshold is indicated by the second communication device to the first communication device by the indication information 3.

It should be noted that, the above-mentioned two schemes of using a timing period and configuring a time interval threshold may be coupled or performed independently. For example, when the timing period technical solution is adopted, the time interval between any two adjacent time domain positions PSFCH in the at least two PSFCH may be greater than or equal to the time interval threshold, or may be less than the time interval threshold, which is not limited in the present application. However, if the time interval between any two adjacent PSFCH time-domain positions in the at least two PSFCH may be greater than or equal to the time interval threshold, the number of PSFCH in each timing period may be smaller, and accordingly, the number of DTX in each timing period may be smaller, so that premature triggering of an unreasonable radio link state determining (or triggering of the RLF detection mechanism) mechanism may be avoided. For example, when the time interval threshold is configured, the timing period is not needed, and the total number of DTX can be reduced to a certain extent; if the timing period is adopted at the same time, the total number of DTX can be further reduced, and the triggering of an unreasonable radio link state judging mechanism can be avoided.

It is to be appreciated that in the method 300, a unicast link may be established between the first communication device and the second communication device. Wherein, the description of the process can be referred to the existing description, and the application will not be repeated.

Having described method embodiments of the present application, corresponding apparatus embodiments are described below.

In order to implement the functions in the method provided by the embodiment of the present application, the terminal and the network device may include hardware structures and/or software modules, and implement the functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Some of the functions described above are performed in a hardware configuration, a software module, or a combination of hardware and software modules, depending on the specific application of the solution and design constraints.

Fig. 5 is a schematic block diagram of a communication device 500 of an embodiment of the present application. The communication device 500 comprises a processor 510 and a communication interface 520, the processor 510 and the communication interface 520 being interconnected by a bus 530. The communication device 500 shown in fig. 5 may be the first communication device or the second communication device.

Optionally, the communication device 500 further comprises a memory 540.

Memory 540 includes, but is not limited to, random access memory (random access memory, RAM), read-only memory (ROM), erasable programmable read-only memory (erasable programmable read only memory, EPROM), or portable read-only memory (compact disc read-only memory, CD-ROM), with memory 540 for associated instructions and data.

Processor 510 may be one or more central processing units (central processing unit, CPU), which may be a single-core CPU or a multi-core CPU in the case where processor 510 is a single CPU.

When the communication device 500 is a first communication device, the processor 510 is configured to read a computer program or instructions stored in the memory 540, illustratively: receiving PSSCH#A from the second communication device; each PSFCH of the at least two PSFCH corresponding to pssch#a transmits feedback information to the second communication device.

Also by way of example, the following operations may be performed: an indication 1 is received from the second communication device indicating a resource location of each PSFCH of the at least two PSFCH.

Also by way of example, the following operations may be performed: an indication message 2 is received from the second communication apparatus, which indicates a duration T0 between pssch#a and PSFCH corresponding to pssch#a.

The foregoing is described by way of example only. When the communication device 500 is a first communication device, it will be responsible for executing the methods or steps related to the first communication device in the foregoing method embodiments. The first communication device may be a terminal device or a network device.

When the communication device 500 is a second communication device, the processor 510 is configured to read a computer program or instructions stored in the memory 540, illustratively: transmitting PSSCH#A to the first communication apparatus; determining a number of DTX's for at least two timing periods; determining whether a wireless link between the first communication device and the second communication device is in a failed state based on the number of DTX's in at least two timing periods.

Also by way of example, the following operations may be performed: an indication information 1 is sent to the first communication device indicating a resource location of each PSFCH of the at least two PSFCH.

Also by way of example, the following operations may be performed: an indication information 2 for indicating a time period T0 between pssch#a and PSFCH corresponding to pssch#a is transmitted to the first communication device.

The foregoing is described by way of example only. When the communication device 500 is a second communication device, it will be responsible for executing the methods or steps related to the second communication device in the method embodiments described above. The second communication device may be a terminal device or a network device.

The above description is merely exemplary in nature. Specific content can be seen from the content shown in the above method embodiment. In addition, the implementation of the individual operations in fig. 5 may also correspond to the respective description of the method embodiments shown with reference to fig. 3 to 4.

Fig. 6 is a schematic block diagram of a communication device 600 of an embodiment of the present application. The communication device 600 may be the first communication device or the second communication device in the above embodiments, or may be a chip or a module in the first communication device or the second communication device, for implementing the method related to the above embodiments. The communication device 600 includes a transceiver unit 610 and a processing unit 620. The transceiver unit 610 and the processing unit 620 are exemplarily described below.

The transceiver unit 610 may include a transmitting unit and a receiving unit, for implementing the functions of transmitting or receiving in the above-described method embodiments, respectively; and may further comprise a processing unit for implementing functions other than transmission or reception.

Illustratively, when the communication device 600 is a first communication device, the transceiver unit 610 is configured to receive the pssch#a from a second communication device; the transceiver unit 610 is further configured to send feedback information to the second communication device at each PSFCH of the at least two PSFCH corresponding to the pssch#a.

Optionally, the communication device 600 further comprises a storage unit 630 for storing a program or code for performing the aforementioned method.

The foregoing is described by way of example only. When the communication device 600 is a first communication device, it will be responsible for executing the methods or steps related to the first communication device in the foregoing method embodiments.

Illustratively, when the communication device 600 is a second communication device, the transceiver unit 610 is configured to send pssch#a to the first communication device; a processing unit 620 configured to determine the number of DTX's in at least two timing periods; the processing unit 620 is configured to determine whether the radio link between the second communication device and the first communication device is in a failed state according to the number of DTX's in at least two timing periods.

Optionally, the communication device 600 further comprises a storage unit 630 for storing a program or code for performing the aforementioned method.

The foregoing is described by way of example only. When the communication device 600 is a second communication device, it will be responsible for executing the methods or steps related to the second communication device in the method embodiments described above.

In addition, the implementation of each operation of fig. 6 may also be correspondingly described with reference to the method shown in the foregoing embodiment, which is not described herein again.

The apparatus embodiments shown in fig. 5 and 6 are described for implementing the foregoing method embodiments shown in fig. 3 and 4. Thus, the specific steps and methods performed by the apparatus shown in fig. 5 and 6 may be described with reference to the foregoing method embodiments.

It should be understood that the transceiver unit may include a transmitting unit and a receiving unit. The transmitting unit is used for executing the transmitting action of the communication device, and the receiving unit is used for executing the receiving action of the communication device. For convenience of description, the transmitting unit and the receiving unit are combined into one transceiver unit in the embodiment of the application. The description is unified herein, and will not be repeated.

Fig. 7 is a schematic diagram of a communication device 700 according to an embodiment of the application. The communication device 700 may be used to implement the functionality of the first communication device or the second communication device in the above-described method. The communication device 700 may be a chip in the first communication device or the second communication device.

The communication apparatus 700 includes: an input-output interface 720 and a processor 710. The input-output interface 720 may be an input-output circuit. Processor 710 may be a signal processor, chip, or other integrated circuit that may implement the methods of the present application. The input/output interface 720 is used for inputting or outputting signals or data.

For example, when the communication device 700 is a first communication device, the input/output interface 720 is configured to receive the pssch#a from a second communication device. The input-output interface 720 is further configured to send feedback information to the second communication device at each PSFCH of the at least two PSFCH corresponding to pssch#a.

For example, when the communication device 700 is a second communication device, the input-output interface 720 is used to send pssch#a to the first communication device. The processor 710 is configured to determine the number of DTX's for at least two timing periods. The processor 710 is further configured to determine whether the wireless link between the second communication device and the first communication device is in a failed state based on the number of DTX's in at least two timing periods.

In one possible implementation, processor 710 implements functions implemented by a network device or terminal device by executing instructions stored in a memory.

Optionally, the communication device 700 further comprises a memory.

In the alternative, the processor and memory are integrated.

Optionally, the memory is external to the communication device 700.

In one possible implementation, processor 710 may be logic circuitry, and processor 710 inputs/outputs messages or signaling through input/output interface 720. The logic circuit may be a signal processor, a chip, or other integrated circuits that may implement the methods of embodiments of the present application.

The above description of the apparatus of fig. 7 is merely an exemplary description, and the apparatus can be used to perform the method described in the foregoing embodiment, and details of the foregoing description of the method embodiment may be referred to herein and will not be repeated herein.

Fig. 8 is a schematic block diagram of a communication device 800 of an embodiment of the present application. The communication device 800 may be a network device or a chip. The communication device 800 may be used to perform the operations performed by the first communication device in the method embodiment illustrated in fig. 3 described above.

When the communication apparatus 800 is a network device (the first communication apparatus or the second communication apparatus is a network device), for example, a base station. Fig. 8 shows a simplified schematic of a base station architecture. The base station includes 810, 820 and 830. The 810 part is mainly used for baseband processing, control of the base station and the like; section 810 is typically a control center of the base station, and may be generally referred to as a processor, for controlling the base station to perform the processing operations on the network device side in the above-described method embodiment. Section 820 is mainly used for storing computer program code and data. The 830 part is mainly used for receiving and transmitting radio frequency signals and converting radio frequency signals and baseband signals; section 830 may be generally referred to as a transceiver module, transceiver circuitry, or transceiver, etc. The transceiver module of section 830, which may also be referred to as a transceiver or transceiver, includes an antenna 833 and radio frequency circuitry (not shown) that is primarily used for radio frequency processing. Alternatively, the means for implementing the receiving function in section 830 may be regarded as a receiver and the means for implementing the transmitting function as a transmitter, i.e. section 830 includes a receiver 832 and a transmitter 831. The receiver may also be referred to as a receiving module, receiver, or receiving circuit, etc., and the transmitter may be referred to as a transmitting module, transmitter, or transmitting circuit, etc.

Portions 810 and 820 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used for reading and executing the program in the memory to realize the baseband processing function and control of the base station. If there are multiple boards, the boards can be interconnected to enhance processing power. As an alternative implementation manner, the multiple boards may share one or more processors, or the multiple boards may share one or more memories, or the multiple boards may share one or more processors at the same time.

For example, in one implementation, the transceiver module of portion 830 is configured to perform the transceiver-related process performed by the network device in the embodiment shown in fig. 3. The processor of section 810 is configured to perform processes related to the processing performed by the network device in the embodiment shown in fig. 3.

In another implementation, the processor of portion 810 is configured to perform the processing related procedures performed by the communication device in the embodiment illustrated in fig. 3.

In another implementation, the transceiver module of portion 830 is configured to perform the transceiver-related process performed by the communication device in the embodiment shown in fig. 3.

It should be understood that fig. 8 is only an example and not a limitation, and that the above-described network devices including processors, memories, and transceivers may not rely on the structures shown in fig. 5-7.

When the communication device 800 is a chip, the chip includes a transceiver, a memory, and a processor. Wherein, the transceiver can be an input-output circuit and a communication interface; the processor is an integrated processor, or microprocessor, or integrated circuit on the chip. The sending operation of the network device in the above method embodiment may be understood as the output of the chip, and the receiving operation of the network device in the above method embodiment may be understood as the input of the chip.

Fig. 9 is a schematic block diagram of a communication device 900 of an embodiment of the present application. The communication device 900 may be a terminal equipment, a processor of a terminal equipment, or a chip. The communication apparatus 900 may be configured to perform the operations performed by the terminal device or the communication device in the above-described method embodiments.

Fig. 9 shows a simplified schematic structure of a terminal device when the communication apparatus 900 is a terminal device (the first communication apparatus or the second communication apparatus is a terminal device). As shown in fig. 9, the terminal device includes a processor, a memory, and a transceiver. The memory may store computer program code, and the transceiver includes a transmitter 931, a receiver 932, radio frequency circuitry (not shown), an antenna 933, and input and output devices (not shown).

The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. An input/output device. For example, touch screens, display screens, keyboards, etc. are mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory, processor, and transceiver are shown in fig. 9, and in an actual end device product, one or more processors and one or more memories may be present. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the application, the antenna and the radio frequency circuit with the receiving and transmitting functions can be regarded as a receiving and transmitting module of the terminal equipment, and the processor with the processing function can be regarded as a processing module of the terminal equipment.

As shown in fig. 9, the terminal device includes a processor 910, a memory 920, and a transceiver 930. Processor 910 may also be referred to as a processing unit, processing board, processing module, processing device, etc., and transceiver 930 may also be referred to as a transceiver unit, transceiver, transceiving device, etc.

Alternatively, the means for implementing the receiving function in the transceiver 930 may be regarded as a receiving module, and the means for implementing the transmitting function in the transceiver 930 may be regarded as a transmitting module, i.e. the transceiver 930 includes a receiver and a transmitter. The transceiver may also be referred to as a transceiver, transceiver module, transceiver circuitry, or the like. The receiver may also be sometimes referred to as a receiver, a receiving module, a receiving circuit, or the like. The transmitter may also sometimes be referred to as a transmitter, a transmitting module, or a transmitting circuit, etc.

For example, in one implementation, the processor 910 is configured to perform processing actions on the terminal device side in the embodiment shown in fig. 3, and the transceiver 930 is configured to perform transceiving actions on the terminal device side in fig. 3.

For example, in one implementation, the processor 910 is configured to perform processing actions on the terminal device side in the embodiment shown in fig. 3, and the transceiver 930 is configured to perform transceiving actions on the terminal device side in fig. 3.

It should be understood that fig. 9 is only an example and not a limitation, and the above-described terminal device including the transceiver module and the processing module may not depend on the structures shown in fig. 5 to 7.

When the communication device 900 is a chip, the chip includes a processor, a memory, and a transceiver. Wherein the transceiver may be an input-output circuit or a communication interface; the processor may be an integrated processing module or microprocessor or an integrated circuit on the chip. The sending operation of the terminal device in the above method embodiment may be understood as the output of the chip, and the receiving operation of the terminal device in the above method embodiment may be understood as the input of the chip.

The application also provides a chip comprising a processor for calling from a memory and executing instructions stored in said memory, so that a communication device on which said chip is mounted performs the methods of the examples above.

The present application also provides another chip, comprising: the input interface, the output interface and the processor are connected through an internal connection path, and the processor is used for executing codes in the memory, and when the codes are executed, the processor is used for executing the methods in the examples. Optionally, the chip further comprises a memory for storing a computer program or code.

The application also provides a processor, coupled to the memory, for performing the methods and functions of any of the embodiments described above in relation to a network device or a terminal device.

In another embodiment of the application a computer program product is provided comprising instructions which, when run on a computer, implement the method of the previous embodiment.

The application also provides a computer program which, when run in a computer, implements the method of the preceding embodiments.

In another embodiment of the application a computer readable storage medium is provided, which stores a computer program which, when executed by a computer, implements the method according to the previous embodiment.

In describing embodiments of the present application, unless otherwise indicated, "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.

In addition, in order to facilitate the clear description of the technical solution of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ. Meanwhile, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations or explanations.

Any embodiment or design described herein as "exemplary" or "for example" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion that may be readily understood.

In the description of the embodiments of the present application, unless otherwise indicated, "/" means that the objects associated in tandem are in a "or" relationship, e.g., A/B may represent A or B; the "and/or" in the present application is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application.

Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present application, the sequence number of each process does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It is appreciated that reference throughout this specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application.

Thus, the various embodiments are not necessarily all referring to the same embodiment throughout the specification. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

It should be understood that, in various embodiments of the present application, the sequence number of each process does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

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 solution. 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 application.

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

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of elements is merely a logical functional division, and there may be additional divisions of actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed.

Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 embodiments of the present application may be embodied in essence or a part contributing to the prior art or a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.

The foregoing is merely a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the embodiment of the present application, and the changes or substitutions are covered by the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims (27)

1. A side-link feedback method, comprising:

The second communication device transmits a physical side uplink shared channel PSSCH to the first communication device;

The second communication device determines the number of discontinuous transmission DTX in at least two timing periods, one DTX indicating a failure of receiving one feedback information, one feedback information being carried on one physical side uplink feedback channel PSFCH, the PSSCH corresponding to at least two PSFCH, a first timing period of the at least two timing periods including at least one PSFCH of the at least two PSFCH, the number of DTX in the first timing period being less than the number of PSFCH included in the first timing period;

the second communication device determines whether a wireless link between the second communication device and the first communication device is in a failed state according to the number of DTX in the at least two timing periods.

2. The method of claim 1, wherein the second communication device determining whether the wireless link is in a failed state based on the number of DTX's in the at least two timing periods comprises:

when the number of DTX's in the at least two timing periods is equal to a number threshold, the second communication device terminates timing;

The second communication device determines that the radio link is in a failed state.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

The second communication device sends first indication information to the first communication device, the first indication information being used to indicate a resource location of each PSFCH of the at least two PSFCH.

4. A method according to any one of claims 1 to 3, wherein the time interval between time domain positions of any two adjacent PSFCH of the at least two PSFCH is greater than or equal to a time interval threshold.

5. A method according to any one of claims 1 to 3, further comprising:

the second communication device sends second indication information to the first communication device, wherein the second indication information comprises a time interval threshold;

the time interval between the time domain locations of any two adjacent PSFCH of the at least two PSFCH is greater than or equal to the time interval threshold.

6. The method according to any one of claims 1 to 5, further comprising:

The second communication device sends third indication information to the first communication device, wherein the third indication information is used for indicating the maximum time interval between the PSSCH and PSFCH corresponding to the PSSCH.

7. A side-link feedback method, comprising:

The first communication device receives a physical side uplink shared channel PSSCH from the second communication device;

The first communication device sends feedback information to the second communication device on each of at least two physical side uplink feedback channels PSFCH corresponding to the PSSCH PSFCH, and a time interval between time domain positions of any two adjacent PSFCH of the at least two PSFCH is greater than or equal to a time interval threshold.

8. The method of claim 7, wherein the method further comprises:

the first communication device configures a resource location of each PSFCH of the at least two PSFCH according to the time interval threshold.

9. The method of claim 7, wherein the method further comprises:

The first communication device receives first indication information from the second communication device, the first indication information being used to indicate a resource location of each of the at least two PSFCH, PSFCH.

10. The method according to any one of claims 7 to 9, further comprising:

the first communication device receives second indication information from the second communication device, where the second indication information is used to indicate a maximum time interval between the PSSCH and PSFCH corresponding to the PSSCH.

11. A communication device, comprising:

a transceiving unit configured to transmit a physical side uplink shared channel PSSCH to a first communication device;

A processing unit, configured to determine a number of DTX's for discontinuous transmission in at least two timing periods, where one DTX indicates a failure of receiving one feedback information, and one feedback information is carried on one physical side uplink feedback channel PSFCH, where the PSSCH corresponds to at least two PSFCH, a first timing period of the at least two timing periods includes at least one PSFCH of the at least two PSFCH, and the number of DTX's in the first timing period is less than the number of PSFCH included in the first timing period;

The processing unit is further configured to determine whether a radio link between the first communication device and the communication device is in a failed state according to the number of DTX's in the at least two timing periods.

12. The apparatus of claim 11, wherein the processing unit is further configured to:

terminating the timing when the number of DTX in the at least two timing periods is equal to a number threshold;

and determining that the wireless link is in a failure state.

13. The device according to claim 11 or 12, wherein,

The transceiver unit is further configured to send first indication information to the first communication device, where the first indication information is used to indicate a resource location of each of the at least two PSFCH and PSFCH.

14. The device according to any one of claims 11 to 13, wherein,

The time interval between the time domain locations of any two adjacent PSFCH of the at least two PSFCH is greater than or equal to the time interval threshold.

15. The device according to any one of claims 11 to 13, wherein,

The transceiver unit is further configured to send second indication information to the first communication device, where the second indication information includes a time interval threshold;

the time interval between the time domain locations of any two adjacent PSFCH of the at least two PSFCH is greater than or equal to the time interval threshold.

16. The device according to any one of claims 11 to 15, wherein,

The transceiver unit is further configured to send third indication information to the first communication device, where the third indication information is used to indicate a maximum time interval between the PSSCH and PSFCH corresponding to the PSSCH.

17. A communication device, comprising:

A transceiving unit for receiving a physical side uplink shared channel PSSCH from the second communication device;

The transceiver unit is further configured to send feedback information to the second communication device at each of at least two physical side uplink feedback channels PSFCH corresponding to the PSSCH, where a time interval between time domain positions of any two adjacent PSFCH in the at least two PSFCH is greater than or equal to a time interval threshold.

18. The apparatus of claim 17, further comprising a processing unit,

The processing unit is configured to configure a resource location of each PSFCH of the at least two PSFCH according to the time interval threshold.

19. The apparatus of claim 18, wherein the device comprises a plurality of sensors,

The transceiver unit is further configured to receive first indication information from the second communication device, where the first indication information is used to indicate a resource location of each of the at least two PSFCH and PSFCH.

20. The device according to any one of claims 17 to 19, wherein,

The transceiver unit is further configured to receive second indication information from the second communication device, where the second indication information is used to indicate a maximum time interval between the PSSCH and PSFCH corresponding to the PSSCH.

21. A communication device comprising a processor for causing the communication device to perform the method of any one of claims 1 to 10 by executing a computer program or instructions, or by logic circuitry.

22. The communication apparatus according to claim 21, further comprising a memory for storing the computer program or instructions.

23. A communication device according to claim 21 or 22, further comprising a communication interface for inputting and/or outputting signals.

24. A communication device comprising logic circuitry for inputting and/or outputting signals and an input-output interface for performing the method of any of claims 1 to 10.

25. A computer-readable storage medium, comprising a computer program or instructions which, when run on a computer, cause the method of any one of claims 1 to 10 to be performed.

26. A computer program product comprising instructions which, when run on a computer, cause the method of any one of claims 1 to 10 to be performed.

27. A computer program, characterized in that it, when run on a computer, causes the method of any one of claims 1 to 10 to be performed.