CN116368756A - Method and apparatus for wireless communication - Google Patents

Abstract

The application provides a method and a device for wireless communication. The method comprises the following steps: determining that a first process meets a first condition, wherein the first process is used for transmitting first sidestream data; stopping a first timer, wherein the first timer is used for indicating the minimum duration for which retransmission is expected to be received, or the first timer is used for indicating the duration for keeping awakening; the first condition is that the first process is unoccupied, or the first side line data is successfully decoded, or feedback information of the first side line data is sent, or positive determination information ACK is received, or positive determination information ACK is sent, or negative determination information NACK is not received. The technical scheme can reduce the influence of HARQ process management on the service and improve the user experience.

Description

Method and apparatus for wireless communication Technical Field

The present application relates to the field of communications, and more particularly, to a method and apparatus for wireless communications.

Background

In order to improve communication quality, in a communication technology such as internet of vehicles (vehicle to everything, V2X), communication devices (for example, vehicles) may communicate with each other by using a Sidelink (SL), and in a communication mode based on the sidelink technology, a hybrid automatic repeat request (hybrid automatic repeat request, HARQ) feedback is supported, and data is transmitted by combining a stop-and-wait protocol (stop-and-wait protocol).

With the development of communication technology, the requirements on the reliability and quality of communication are higher and higher, and when the device supporting the HARQ feedback manages the HARQ process, the service is affected, so that the activation time of data transmission or unnecessary monitoring time is generated, and the ever-increasing communication requirement cannot be met.

Therefore, it is desirable to provide a technique capable of reducing the influence of HARQ process management on the service and improving the user experience.

Disclosure of Invention

The application provides a wireless communication method and device, which can reduce the influence of HARQ process management on service and improve user experience.

In a first aspect, a method of wireless communication is provided, comprising: determining that a first process meets a first condition, wherein the first process is used for transmitting first sidestream data; stopping a first timer, wherein the first timer is used for indicating the minimum duration for which retransmission is expected to be received, or the first timer is used for indicating the duration for keeping awakening; the first condition is that the first process is unoccupied, or the first side line data is successfully decoded, or feedback information of the first side line data is sent, or positive determination information ACK is received, or positive determination information ACK is sent, or negative determination information NACK is not received.

According to the scheme, the first process is determined to meet the first condition, and when the first condition is met, the first timer is stopped, so that the working state of the first timer can be controlled, the additional monitoring time caused by the continuous timing of the first timer is avoided, and the energy consumption is reduced.

Wherein the "first process" can be understood as: a first side uplink SL procedure.

"the first process is unoccupied" can be understood as: the first process is in an unoccupied state.

Alternatively, the wireless communication method may be performed by a receiving-side terminal device or a transmitting-side terminal device.

With reference to the first aspect, in a possible implementation manner, the method further includes: determining that the first process meets a second condition, wherein the second condition is that second sidestream data is received through the first process; the stopping the first timer includes: determining that the first condition and the second condition are satisfied, and stopping the first timer.

According to the scheme, the first process is determined to meet the first condition, so that the working state of the first timer can be controlled, the additional monitoring time caused by the continuous timing of the first timer is avoided, the energy consumption is reduced, and the influence of the operation of the first timer on the activation time of the second sidestream data is further avoided.

Where "receiving the second sidestream data" may be understood as receiving the second sidestream data after the first condition is met.

With reference to the first aspect, in a possible implementation manner, the method further includes: and starting or restarting the first timer according to the configuration information corresponding to the second sidestream data.

With reference to the first aspect, in a possible implementation manner, the method further includes: and configuring configuration information of the second sidestream data according to the first signaling.

Optionally, the configuration information may be discontinuously received configuration information corresponding to the second sidestream data.

Alternatively, the first signaling may be radio resource control RRC signaling.

With reference to the first aspect, in a possible implementation manner, the method further includes: the first process meets a third condition, and the first process is determined to be unoccupied; wherein the third condition is that the first side data is successfully decoded; or the third condition is that the first side row data decoding fails and the first side row data is received on a second process.

With reference to the first aspect, in a possible implementation manner, the first process corresponds to one or more first timers, the first timers are associated with the first process, or the first timers are associated with the first process and first information, and the first information includes at least one of the following: source identity, destination identity, communication type, hybrid automatic repeat and response HARQ attribute.

With reference to the first aspect, in one possible implementation manner, the first timer is a round trip transmission time RTT timer or a retransmission timer.

Optionally, the first timer may also be other timers that implement a minimum duration indicating that a retransmission is desired to be received.

Alternatively, the first timer may be other timers that implement a duration indicating the stay awake.

With reference to the first aspect, in a possible implementation manner, the method further includes starting the first timer before stopping the first timer.

With reference to the first aspect, in a possible implementation manner, the starting the first timer includes: and determining that the first side data transmission fails, and starting the first timer.

With reference to the first aspect, in one possible implementation manner, the method determines that the first side data transmission fails includes: receiving negative acknowledgement information NACK; or transmitting negative determination information NACK to the network device; or the first feedback information is not received.

In a second aspect, there is provided a method of wireless communication, the method comprising: determining that a fourth process meets a fourth condition, wherein the fourth process is used for transmitting fourth sidestream data; determining that the fourth process is unoccupied; the fourth condition is that the fourth side line data transmission is completed, and a fourth timer is not running, where the fourth timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake.

According to the scheme, the fourth process is determined to be unoccupied by determining that the fourth process meets the fourth condition, and after the fourth process is determined to be unoccupied, the fourth process is distributed to be used for transmitting other sidestream data, so that the influence on the activation time of other sidestream data is avoided, and in addition, the fourth process is determined to be unoccupied, so that the additional monitoring time can be avoided, and the energy consumption is reduced.

With reference to the second aspect, in a possible implementation manner, the fourth condition is that the fourth side line data transmission is completed, and the method includes: the fourth side line data is successfully decoded; or receiving new transmission data, wherein the new transmission data and the fourth side line data correspond to the same transmission information, and the transmission information is used for identifying the new transmission data.

With reference to the second aspect, in a possible implementation manner, the fourth condition is that the fourth side line data transmission is completed, and the method further includes: receiving positive determination information ACK; or transmitting positive determination information ACK; or no negative determination information NACK is received.

With reference to the second aspect, in a possible implementation manner, the fourth timer is not running, and the method includes: the fourth timer times out; or the fourth timer is in a stopped state.

Optionally, the fourth timer is instructed to stop when the stopped state is the fourth timer is in an operating state.

In a third aspect, a wireless communication method is provided, the method comprising: determining that a first process meets a first condition, wherein the first process is used for transmitting first sidestream data; stopping a first timer, wherein the first timer is used for indicating the minimum duration for which retransmission is expected to be received, or the first timer is used for indicating the duration for keeping awakening; the first condition is that feedback information of the first side line data is sent, positive determination information ACK is received, positive determination information ACK is sent, or negative determination information NACK is not received.

According to the scheme, the first process is determined to meet the first condition, and the first timer is stopped, so that the additional monitoring time of the receiving side terminal equipment can be avoided, and the energy consumption is reduced.

With reference to the third aspect, in a possible implementation manner, the method further includes starting the first timer before stopping the first timer.

With reference to the third aspect, in one possible implementation manner, the starting the first timer includes: and determining that the first side data transmission fails, and starting the first timer.

With reference to the third aspect, in one possible implementation manner, the determining that the first side data transmission fails includes: receiving negative acknowledgement information NACK; or transmitting negative determination information NACK to the network device; or the first feedback information is not received.

In a fourth aspect, there is provided a wireless communication method, the method comprising: determining that a fourth process meets a fourth condition, wherein the fourth process is used for transmitting fourth sidestream data; determining that the fourth process is unoccupied; the fourth condition is that the fourth side line data transmission is completed, and a fourth timer is not running, where the fourth timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake.

With reference to the fourth aspect, in a possible implementation manner, the fourth condition is that the fourth side line data transmission is completed, and the method further includes: receiving positive determination information ACK; or transmitting positive determination information ACK; or no negative determination information NACK is received.

With reference to the fourth aspect, in a possible implementation manner, the fourth timer is not running, and the method includes: the fourth timer times out; or the fourth timer is in a stopped state.

In a fifth aspect, there is provided a communication apparatus comprising: the system comprises a receiving and transmitting unit and a processing unit, wherein the processing unit is used for determining that a first process meets a first condition and is used for transmitting first sidestream data; the processing unit is further configured to stop a first timer, where the first timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake; the first condition is that the first process is unoccupied, or the first side line data is successfully decoded, or feedback information of the first side line data is sent, or positive determination information ACK is received, or positive determination information ACK is sent, or negative determination information NACK is not received.

With reference to the fifth aspect, in a possible implementation manner, the apparatus further includes: the processing unit is further configured to determine that the first process meets a second condition, where the second condition is that second sidestream data is received through the first process; the processing unit is further configured to stop the first timer, and includes: the processing unit is further configured to determine to stop the first timer when the first condition and the second condition are satisfied.

With reference to the fifth aspect, in a possible implementation manner, the apparatus further includes: the processing unit is further configured to start or restart the first timer according to configuration information corresponding to the second sidestream data.

With reference to the fifth aspect, in a possible implementation manner, the apparatus further includes: the processing unit is further configured to configure configuration information of the second sidestream data according to the first signaling.

With reference to the fifth aspect, in a possible implementation manner, the apparatus further includes: the processing unit is further configured to determine that the first process is unoccupied when the first process meets a third condition; wherein the third condition is that the first side data is successfully decoded; or the third condition is that the decoding of the first side line data fails, and the receiving and transmitting unit receives the first side line data on a second process.

With reference to the fifth aspect, in a possible implementation manner, the first process corresponds to one or more first timers, the first timers are associated with the first process, or the first timers are associated with the first process and first information, and the first information includes at least one of the following: source identity, destination identity, communication type, hybrid automatic repeat and response HARQ attribute.

With reference to the fifth aspect, in a possible implementation manner, the first timer is a round trip transmission time RTT timer or a retransmission timer.

With reference to the fifth aspect, in a possible implementation manner, the apparatus further includes, before stopping the first timer, the processing unit is further configured to start the first timer.

With reference to the fifth aspect, in a possible implementation manner, the starting the first timer includes: the processing unit determines that the first side data transmission fails, and the processing unit starts the first timer.

With reference to the fifth aspect, in a possible implementation manner, the determining, by the processing unit, that the first side data transmission fails includes: the processing unit determines that negative acknowledgement information NACK is received; or the processing unit determines to send negative determination information NACK to the network device; or the processing unit determines that first feedback information is not received, the first feedback information being associated with the first side uplink data.

In a sixth aspect, there is provided a communication apparatus, the apparatus comprising: the processing unit is used for determining that a fourth process meets a fourth condition, and the fourth process is used for transmitting fourth sidestream data; the processing unit is further configured to determine that the fourth process is unoccupied; the fourth condition is that the processing unit determines that the fourth sidestream data transmission is completed, and a fourth timer is not running, where the fourth timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake.

With reference to the sixth aspect, in a possible implementation manner, the determining, by the processing unit, that the fourth side line data transmission is completed includes: the processing unit determines that the fourth sidestream data is successfully decoded; or the processing unit determines that new transmission data is received, the new transmission data and the fourth side line data correspond to the same transmission information, and the transmission information is used for identifying the new transmission data.

With reference to the sixth aspect, in a possible implementation manner, the determining, by the fourth condition, that the fourth side line data transmission is completed for the processing unit includes: the processing unit determines that positive determination information ACK is received; or the processing unit determines to send positive determination information ACK; or the processing unit determines that no negative determination information NACK is received.

With reference to the sixth aspect, in a possible implementation manner, the fourth timer is not running, and the apparatus includes: the fourth timer times out; or the fourth timer is in a stopped state.

A seventh aspect provides a communication device comprising means or units for performing the method of the first aspect or any of the possible implementations of the first aspect or the second aspect or means or units for performing the method of the second aspect or any of the possible implementations of the second aspect. The module or unit may be a hardware circuit, or may be software, or may be implemented by combining a hardware circuit with software.

In an eighth aspect, a communication device is provided, comprising means or units for performing the method in any of the possible implementations of the third aspect and the third aspect, or means or units for performing the method in any of the possible implementations of the fourth aspect and the fourth aspect. The module or unit may be a hardware circuit, or may be software, or may be implemented by combining a hardware circuit with software.

A ninth aspect provides a communications apparatus comprising a processor and a memory, the memory storing a program or instructions for invoking the program or instructions from the memory and executing the program or instructions to cause the apparatus to perform the method of or the method of any of the possible implementations of the first aspect or the second aspect.

Optionally, the apparatus further comprises a transceiver.

Optionally, the processor is coupled with the memory.

In a tenth aspect, there is provided a communications device comprising a processor and a memory, the memory storing a program or instructions for invoking and executing the program or instructions from the memory, causing the device to perform or to implement the method of any one of the possible implementations of the third aspect and the fourth aspect.

Optionally, the apparatus further comprises a transceiver.

Optionally, the processor is coupled with the memory.

In an eleventh aspect, there is provided a communication apparatus, the apparatus comprising: at least one processor and a communication interface for information interaction by the apparatus with other apparatuses, which when executed in the at least one processor causes the apparatus to perform the method of or the method of any of the possible implementations of the first aspect or the second aspect.

Alternatively, the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.

Optionally, the apparatus further comprises a memory, the memory being configured to store instructions and data, the processor, when executing the instructions stored in the memory, may implement the method described in the first aspect or any of the possible implementations of the first aspect, or perform the method in the second aspect or any of the possible implementations of the second aspect.

In a twelfth aspect, there is provided an apparatus comprising: at least one processor and a communication interface for the apparatus to interact with other apparatuses, the program instructions, when executed in the at least one processor, cause the apparatus to perform or to implement the method of any one of the possible implementations of the third aspect and the fourth aspect described above.

Alternatively, the communication interface may be a transceiver, circuit, bus, module, pin, or other type of communication interface.

Optionally, the apparatus further comprises a memory for storing instructions and data, the processor, when executing the instructions stored in the memory, may implement the method in any one of the possible implementations of the third aspect and the third aspect, or implement the method in any one of the possible implementations of the fourth aspect and the fourth aspect.

A thirteenth aspect provides a computer readable storage medium having a computer program stored therein, which when run on a computer causes the computer to perform the method of or the method of any of the possible implementations of the first aspect or the second aspect.

A fourteenth aspect provides a computer readable storage medium having stored therein a computer program which when run on a computer causes the computer to perform, or for carrying out, the method of the third aspect and any one of the possible implementations of the fourth aspect.

A fifteenth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of or the method of any of the possible implementations of the first aspect or the second aspect described above.

In a sixteenth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform or be used to implement the method of any one of the possible implementations of the third aspect and the fourth aspect described above.

A seventeenth aspect provides a communication system comprising the communication device described in the fifth, seventh, ninth or eleventh aspect and the communication device described in the sixth, eighth, tenth or twelfth aspect.

Drawings

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

Fig. 2 is a schematic diagram of a dynamic association form assignment SL process.

Fig. 3 is a schematic diagram of the operation of the retransmission timer.

Fig. 4 is a schematic diagram of a process of managing timers at a receiving end in the prior art.

Fig. 5 is a schematic diagram of a process of managing timers at a receiving end in the prior art.

Fig. 6 is a schematic diagram of a process of managing timers at a receiving end in the prior art.

Fig. 7 is a schematic diagram of a process of managing timers at a receiving end in the prior art.

Fig. 8 is a schematic diagram of a process of managing timers at a receiving end in the prior art.

Fig. 9 is a schematic flow chart of a method of wireless communication provided in an embodiment of the present application.

Fig. 10 is a schematic diagram of a receiving side management timer procedure in the method for wireless communication according to the embodiment of the present application.

Fig. 11 is a schematic diagram of a receiving side management timer procedure in the method for wireless communication according to the embodiment of the present application.

Fig. 12 is a schematic diagram of a receiving side management timer procedure in the method of wireless communication provided in the embodiment of the present application.

Fig. 13 is a schematic diagram of a receiving side management timer procedure in the method of wireless communication provided in the embodiment of the present application.

Fig. 14 is a schematic flow chart diagram of a method of wireless communication provided by an embodiment of the present application.

Fig. 15 is a schematic diagram of a receiving side management timer procedure in the method of wireless communication provided in the embodiment of the present application.

Fig. 16 is a schematic diagram of a receiving side management timer procedure in the method of wireless communication provided in the embodiment of the present application.

Fig. 17 is a schematic diagram of a receiving side management timer procedure in the method of wireless communication provided in the embodiment of the present application.

Fig. 18 is a schematic diagram of a receiving side management timer procedure in the method of wireless communication provided in the embodiment of the present application.

Fig. 19 is a schematic flow chart diagram of a method of wireless communication provided by an embodiment of the present application.

Fig. 20 is a schematic flow chart of another method of wireless communication provided by an embodiment of the present application.

Fig. 21 is a schematic flow chart of a method of yet another wireless communication provided by an embodiment of the present application.

Fig. 22 is a schematic diagram of a communication device according to an embodiment of the present application.

Fig. 23 is a schematic diagram of a communication device according to an embodiment of the present application.

Fig. 24 is a schematic diagram of a terminal device provided in an embodiment of the present application.

Detailed Description

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

The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), future fifth generation (5th generation,5G) system, or New Radio (NR), etc.

Fig. 1 shows a schematic diagram of a wireless communication system 100 according to an embodiment of the present application.

The wireless communication system according to the embodiments of the present application may include at least two terminal devices, such as terminal devices 102, 103, 104, 105, 106, 107, 108 in the communication system 100 shown in fig. 1. The wireless communication system according to the embodiments of the present application may further include at least one network device, such as network device 101 in wireless communication system 100 shown in fig. 1. A Sidelink (SL) may be established between the at least two terminal devices, for example, a sidelink may be established between terminal device 104 and terminal devices 106, 107, 108 in fig. 1, and further, for example, a sidelink may be established between terminal device 103 and terminal devices 105 and 106 in fig. 1, respectively, and communication may be directly performed between the terminal devices that establish the sidelink. Wherein one terminal device may establish a sidelink with one or more terminal devices, such as terminal device 104 in fig. 1, with multiple devices. In the wireless communication system, the terminal device may also establish a wireless connection with the network device to perform data communication, and the terminal devices 102 and 104 shown in fig. 1 respectively establish wireless links with the network device 101. The terminal device in the wireless communication system may not establish a wireless link with a network device, such as terminal device 103 shown in fig. 1, and may also establish a wireless link with a plurality of terminal devices, such as terminal device 103 in fig. 1, with terminal devices 105 and 106, respectively. It should be understood that the above-described wireless communication system is merely an illustrative example, and the present application is not limited thereto.

The terminal device may be a device providing voice/data connectivity to a user, e.g., a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals are: a mobile phone, tablet, laptop, palmtop, mobile internet device (mobile internet device, MID), wearable device, virtual Reality (VR) device, augmented reality (augmented reality, AR) device, wireless terminal in industrial control (industrial control), wireless terminal in unmanned (self driving), wireless terminal in teleoperation (remote medical surgery), wireless terminal in smart grid (smart grid), wireless terminal in transportation security (transportation safety), wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), cellular phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, public or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in future 5G network or evolving land communication device (public land mobile network), and the like, without limiting the examples of this.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiment of the application, the terminal device may also be a terminal device in an internet of things (internet of things, ioT) system, and the IoT is an important component of future information technology development, and the main technical characteristic of the terminal device is that the article is connected with a network through a communication technology, so that an intelligent network for man-machine interconnection and internet of things interconnection is realized.

In the embodiment of the application, the IOT technology can achieve mass connection, deep coverage and terminal power saving through a narrowband NB technology, for example. For example, the NB may include one Resource Block (RB), i.e., the NB has a bandwidth of only 180KB. To achieve massive access, the terminal needs to be discrete in access, and according to the communication method of the embodiment of the application, the problem of congestion of the massive terminals in the IOT technology when the terminals access the network through the NB can be effectively solved.

In addition, the network device in the embodiments of the present application may be a device for communicating with a terminal device, where the network device may also be referred to as an access network device or a radio access network device, for example, the network device may be an evolved NodeB (eNB or eNodeB) in an LTE system, may also be a wireless controller in a cloud wireless access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, a vehicle device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, etc., may be an Access Point (AP) in a WLAN, and may be a gNB in a new radio system (NR) the embodiments of the present application are not limited.

In addition, in the embodiment of the present application, the network device is a device in the RAN, or a RAN node that accesses the terminal device to the wireless network. For example, by way of illustration and not limitation, as network devices, one may cite: a gNB, a transmission and reception point (transmission reception point, TRP), an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or a wireless fidelity (wireless fidelity, wifi) Access Point (AP), etc. In one network architecture, the network devices may include Centralized Unit (CU) nodes, or Distributed Unit (DU) nodes, or RAN devices including CU nodes and DU nodes, or RAN devices including control plane CU nodes (CU-CP nodes) and user plane CU nodes (CU-UP nodes) and DU nodes.

The network device provides services for a cell, and the terminal device communicates with the network device through transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell, where the cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (metro cells), micro cells (micro cells), pico cells (pico cells), femto cells (femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

In addition, the carrier wave in the LTE system or the 5G system may have multiple cells operating in the same frequency at the same time, and in some special scenarios, the carrier wave may be considered to be identical to the concept of the cell. For example, in the scenario of carrier aggregation (carrier aggregation, CA), when configuring a secondary carrier for a UE, the carrier index of the secondary carrier and the Cell identity (Cell identification, cell ID) of the secondary Cell operating on the secondary carrier are carried at the same time, in which case the concept of the carrier and the Cell may be considered to be equivalent, such as that the terminal device accesses one carrier and accesses one Cell to be equivalent.

The communication system of the present application may also be adapted for internet of vehicles (vehicle to everything, V2X) technology, i.e. the terminal device of the present application may also be a car, e.g. a smart car or an autopilot car.

"X" in V2X represents a different communication target, and V2X may include, but is not limited to: automobile-to-automobile (vehicle to vehicle, V2V), automobile-to-road marking (vehicle to infrastructure, V2I), automobile-to-network (vehicle to network, V2N), and automobile-to-pedestrian (vehicle to pedestrian, V2P).

In V2X, the network device may configure a "zone" for the UE. Wherein the area may also be referred to as a geographic area. When the area is configured, the world will be divided into a number of areas, which are defined by reference points, length, width. When the UE determines a region Identifier (ID), the UE performs the remaining operations using the length, the width, the number of regions over the length, the number of regions over the width, and the reference point of the region. The information may be configured by the network device.

The V2X service may be provided in two ways: namely, a PC5 interface-based system and a Uu interface-based system. Wherein the PC5 interface is an interface defined on a direct link (sidelink) basis, with which communication transmission can be directly performed between communication devices, such as automobiles. The PC5 interface may be used under out of coverage (OOC) and In Coverage (IC), but only authorized communication devices may use the PC5 interface for transmission.

In V2X communication, a User Equipment (UE) and a UE may communicate by using a Sidelink (SL) method. In a communication manner based on the Sidelink technology, resource allocation on the Sidelink supports two modes, namely a scheduling mode (which may be referred to as a mode 1) and a UE autonomous resource selection mode (which may be referred to as a mode 2):

wherein the scheduling mode requires the UE to be in a radio resource control (radio resource control, RRC) connected state. In the scheduling procedure, the UE first makes a resource request to a network device (e.g., eNB), which then allocates control and data resources on the V2X direct link. By way of example and not limitation, in the present application, scheduling in the scheduling mode may include semi-persistent scheduling (SPS). Specifically, when the UE in the connection state of V2X communication transmits data on the sidelink, the UE needs to first send a buffer status report (buffer status report, BSR) to the base station (or the network device) to report the amount of sidelink data that needs to be transmitted currently, so that the base station allocates a sidelink resource of an appropriate size according to the amount of data. And triggering a scheduling request (scheduling request, SR) when the UE does not report the uplink resource of the BSR. And under the condition that the UE configures the SR resources, the UE sends an SR request message to the base station through the SR resources to request the base station to allocate uplink resources for sending the BSR. After receiving the SR request message, the base station allocates uplink transmission authorization for the UE according to the scheduling result, and is used for the UE to send the BSR request.

In addition, in the UE autonomous resource selection mode, the UE selects transmission resources itself and autonomously adjusts the transmission formats of control and data on the V2X through link. Specifically, i.e., when a UE conducting sidelink communications needs to transmit data on the sidelink, the UE may select resources in a pool of resources configured or pre-configured by the base station for data transmission on the sidelink. The resource pool configured by the base station can be configured through system information, or can be configured through dedicated signaling after receiving a request of the user equipment for side uplink communication, or can be configured in a pre-configured manner.

For example, if the UE is configured with a mapping relationship of "zone" to "transmission resource", the UE selects a corresponding resource pool according to the zone in which it is located. Wherein a resource pool may also be referred to as a set or group of resources, a resource pool may comprise one or more resources, e.g., V2X resources. And, the resource pool may be pre-configured by the access device for the UE. In addition, when selecting resources in the resource pool, the UE uses a monitoring (sensing) function, and "monitoring" may also be referred to as measurement or detection. Based on the result of the sending, the UE performs resource selection and reserves a plurality of resources.

In this application, the resource pool may refer to resources for control information and data transmission of side chains (sidelink).

Optionally, the resources in the resource pool include at least one of time domain resources, frequency domain resources, and time-frequency domain resources.

For example, the resource may include a Resource Block (RB) RB.

For another example, in V2X, a resource may include a subchannel formed of a plurality of RBs in succession, where the subchannel may be the smallest unit of scheduling/data transmission on a side chain (sidelink).

In this application, to assist the access device in configuring V2X through link resources, the UE may report location information to the access device, and this reporting may use existing periodic measurement reporting signaling and procedures.

In the present application, the V2X resources (or, the resource pool) may include a common (common) type resource pool, a special (advanced) type resource pool, and a dedicated (polarized) type resource pool.

Further, when the UE performs V2X communication in one of the two resource selection modes described above, the network device may configure the terminal device to perform the other resource selection mode. For example, in LTE V2X, the UE can only be configured to execute one of two voluntary selection modes, if the UE previously works in the scheduling mode, since the sidelink communication needs to be performed and there is data to be transmitted, the sidelink BSR is triggered, and no uplink resource of the BSR is reported at this time, so that the SR is triggered, and in a suspended state, if all suspended SRs are triggered by the sidelink BSR, all suspended SRs are canceled if the UE working in the scheduling mode is reconfigured to work in the autonomous mode. For another example, in NR V2X, a UE may be configured to support both a scheduling mode and an autonomous mode.

In New Radio (NR) uplink communications, PUSCH transmission is divided into two types: uplink based on dynamic grant (grant) and uplink without dynamic grant.

For uplink transmission based on dynamic grant, i.e. the gNB schedules Dynamic Grant (DG) to the UE. The UE sends a buffer status report (buffer status report, BSR) to the base station requesting the base station to schedule uplink resources. If no uplink resource of the BSR is reported at this time, the terminal needs to trigger a scheduling request (scheduling request, SR). After receiving the scheduling request of the UE, the base station transmits downlink control information (downlink control information, DCI) to the UE, and indicates time-frequency resource information of the UL grant in the DCI. That is, the UE needs to monitor DCI on the PDCCH to acquire the UL grant.

Concepts related to the embodiments of the present application are described below:

A. stop-wait protocol

A stop-and-wait protocol (stop-and-wait protocol) may be applied to transmit data in a hybrid automatic repeat request (hybrid automatic repeat request, HARQ) HARQ process. In the stop-and-wait protocol, the transmitting side terminal device transmits a Transport Block (TB) to the receiving side terminal device and waits for acknowledgement information. The reception side terminal device acknowledges the transport block TB, for example, by 1-bit positive acknowledgement information (ACK) or negative acknowledgement information (NACK).

A plurality of parallel stop-and-wait protocols: when one HARQ process is waiting for acknowledgement information, the transmitting-side terminal device may continue transmitting data using another HARQ process. The plurality of HARQ processes together form a HARQ entity (HARQ entity), and the HARQ entity combines with a stop-and-wait protocol, so that continuous transmission of data can be simultaneously allowed.

One UE maintains HARQ entities on each carrier. Each HARQ entity corresponds to a limited HARQ process. Each HARQ process corresponds to an independent HARQ buffer (buffer) at the receiving end, and is configured to perform soft combining on the received data.

In the NR V2X communication system, unicast and multicast support HARQ feedback, i.e. the receiving side terminal device feeds back for each side uplink SL transmission sent by the sending side terminal device. For example, the receiving side terminal equipment successfully receives the TB sent by the sending side terminal equipment, and feeds back ACK; for another example, the receiving side terminal device does not successfully receive the TB and feeds back NACK. Note that the HARQ entity for SL transmission is independent from the HARQ entity for uplink UL transmission.

Each terminal device corresponds to one or more HARQ entities. It should be noted that, one HARQ process can only process one TB in one transmission time interval (transport time interval, TTI), one HARQ process corresponds to one TB, and each HARQ process has an independent HARQ buffer at the receiving end to perform soft combining on the received data. Each HARQ process corresponds to a HARQ process identification (process ID). The retransmission resource corresponds to the HARQ process identifier, and corresponding retransmission data is sent on the retransmission resource corresponding to the HARQ process identifier.

B. Side-uplink HARQ

In the present application, in the NR V2X system, one UE (terminal device) corresponds to one or more MAC entities. The MAC entity of each transmitting-side terminal device maintains one or more HARQ entities for communication with the network device, and one or more HARQ entities for communication with other terminal devices (e.g., receiving-side terminal devices). Wherein a plurality of SL processes are maintained corresponding to HARQ entities communicating with other UEs.

In performing the side-link service, the terminal device #b (i.e., an example of the transmitting-side terminal device, for example, the terminal device 104 in fig. 1) determines a SL process for transmitting the transport block TB from among the transmitting-side-link SL processes. Alternatively, the terminal device #b may determine the SL process according to its operation mode.

For example, terminal device #b operates in mode1 (i.e., when the transmitting side terminal device transmits buffered SL data, requests SL resources from the network device):

step 1: the method comprises the steps that a terminal device #B receives downlink control information DCI sent by a network device, and acquires HARQ ID in the DCI, wherein the DCI is used for scheduling side downlink SL resources of the network device;

step 2: determining a SL process for processing the resource in the SL process of the terminal equipment #B, and associating the selected SL process with the HARQ ID in the DCI;

Step 3: terminal device #b carries the determined identification ID of the SL process in sidestream control information SCI and transmits it to terminal device #a via sidestream link.

Terminal device #a:

step 1: the terminal device #A receives lateral control information SCI sent by the terminal device #B, and judges that the data to be transmitted is new transmission data or retransmission data;

step 2: in the case where the data to be transmitted is new transmission data, the terminal device #a allocates a SL process to receive the data corresponding to the SCI, and associates the SL process with the SCI (e.g., information such as ID).

The SL process is an unoccupied SL process. Specifically, the terminal device #a associates the SL process ID indicated in the received SCI with the determined SL process ID.

Step 3: the received data (transport block) is decoded.

And under the condition that the decoding is successful, determining the SL process corresponding to the terminal equipment #A as unoccupied.

The SL process identifier carried in the SCI is determined by the transmitting terminal device. The receiving side terminal device may receive SL transmissions of a plurality of transmitting side terminal devices, different transmitting side terminal devices may indicate the same SL process Identification (ID) in corresponding SCIs, and the receiving side terminal device may be allocated in a dynamic association form for receiving the SL process. Fig. 2 is a schematic diagram of a dynamic association form distribution SL process according to an embodiment of the present application.

C.HARQ timer

The dynamic resource extension DRX configuration includes a configuration parameter of a timer DRX-HARQ-RTT-TimerDL (or UL), where the configuration parameter is configured per DL HARQ process or per UL HARQ process, and related to retransmission, and indicates a shortest waiting time period required for the UE before receiving a desired downlink retransmission schedule (or before sending desired uplink retransmission data). For DL (UL), a Round Trip Time (RTT) timer may be understood as the processing time of the base station, during which the terminal device determines no retransmission schedule. Under the condition that the wake-up condition is not met, the terminal equipment is in a sleep state; in case the RTT timer expires, the base station process is completed, and it may be necessary to schedule DL retransmission, and the terminal device starts drx-retransmission timer DL to return to the awake state to monitor for retransmission scheduling.

For example, fig. 3 shows a schematic diagram of the operation manner of the retransmission timer provided in the embodiment of the present application. As shown in fig. 3, in the downlink, the timer operates as follows:

starting: for a certain HARQ process, the UE receives a Media Access Control (MAC) Protocol Data Unit (PDU) on a DL SPS, or the UE receives a PDCCH indicating DL allocation, and starts the timer at the first symbol after sending DL feedback;

Stopping: protocol undefined piece;

timeout: for a certain HARQ process, if the RTT timer is overtime and the UE does not successfully decode data, the drx-retransmission timer DL is started.

Fig. 4 to 8 show schematic diagrams of possible methods of managing timers in the prior art. As shown in fig. 4 to 8, the method shows a possible implementation method of the reception-side terminal device processing timer.

Fig. 4 is a schematic diagram showing a procedure of managing timers at a receiving end in the related art. The method shown in fig. 4 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a. The method comprises the following implementation steps:

step 1: terminal device #a receives transport block TB1 and allocates SL process #a1 for receiving the TB1.

Step 2: the terminal device #a determines the SL process #a1 as unoccupied.

It should be understood that, when the terminal device #a determines that the SL process #a1 is unoccupied, new transmission data for the same transmission information #a1 may be received for the terminal device #a, and optionally, the terminal device #a allocation process #a2 receives the new transmission data, where the transmission information #a1 at least includes one or more of the following: source identification, destination identification, communication type, hybrid automatic repeat and response (HARQ) attribute, HARQ process ID, sidelink process ID.

The method of determining that the received data is newly transmitted data will be described by taking transmission information transmitted via a PSCCH channel as an example, i.e., carried in SCI. SCI1 received by terminal device #a includes { HARQ process 1,SRC ID1,DST ID1, unicast mode, ndi=1 }, where the initial value of NDI is 1, the transmitting device identified by src ID1 is terminal 1, the receiving device identified by dst ID1 is terminal 2, and the receiving device receives SCI1 for the first time, which means that SCI1 schedules data newly transmitted from terminal 1 to terminal 2 through HARQ process 1 in unicast mode; if the subsequent receiving device receives sci1= { HARQ process 1,SRC ID1,DST ID1, unicast mode, ndi=0 } for the second time, wherein except for the change of the value of NDI, HARQ process 1,SRC ID1,DST ID1, the value of unicast mode is unchanged, that is, only NDI value is turned over, it means that SCI1 schedules data newly transmitted to terminal 2 by HARQ process 1 in unicast mode; if the subsequent receiving device receives SCI 1= { HARQ process 1,SRC ID1,DST ID1, unicast mode, ndi=0 }, HARQ process 1,SRC ID1,DST ID1, unicast mode and NDI value are unchanged, which means that SCI1 schedules data retransmitted by terminal 1 to terminal 2 through HARQ process 1 in unicast mode.

Step 3: the terminal device #a starts or restarts the RTT timer corresponding to the SL process #a1 based on the DRX configuration information 1 corresponding to the TB1, to the feedback information FB corresponding to the TB1 of the terminal device #b (i.e., an example of the transmitting terminal device).

After the timer RTT1 times out, the timer stops automatically; and starts a retransmission timer to bring the terminal device into an awake state for listening to the retransmission data and/or other side-link transmissions.

Alternatively, after the SL process #a1 is determined to be unoccupied, the terminal device #a1 may allocate the SL process #a1 to receive data. It will be appreciated that starting the retransmission timer to listen for side-uplink transmissions will increase the activation time and increase the power consumption after the SL process #a1 is determined to be unoccupied.

Fig. 5 shows a schematic diagram of a process of managing timers at a receiving end in the prior art. The method shown in fig. 5 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a. The method comprises the following implementation steps:

step 1: terminal device #a decodes transport block TB1 received on SL process #b1.

Step 2: the terminal device #a determines that the SL process #b1 is unoccupied.

Step 3: the terminal device #a starts or restarts the RTT timer corresponding to the SL process #b1 to the feedback information FB1 corresponding to the TB1 of the terminal device #b (i.e., an example of the transmitting terminal device) according to the DRX configuration information 1 corresponding to the TB1.

Optionally, the timer RTT1 is associated with the SL process #b1.

Step 4: terminal device #a receives transport block TB3 transmitted by terminal device #b through SL process #b1.

Alternatively, the moment when the terminal device #a receives the TB3 may be located within a timing interval corresponding to RTT1, as shown in fig. 5.

Alternatively, the moment when the terminal device #a receives TB3 may also be located between the timing intervals of the retransmission timer. This application is not limited thereto.

Alternatively, after the SL process #b1 is determined to be unoccupied, the terminal device #a may allocate the SL process #b1 to receive the new transmission data. It will be appreciated that starting the retransmission timer to listen for side-uplink transmissions will increase the activation time and increase the power consumption after the SL process #b1 is determined to be unoccupied.

It should be noted that fig. 5 shows a case where one timer is associated with one process, for example, RTT1 and SL process #b1.

Alternatively, one process may also correspond to a plurality of timers. As shown in fig. 6, fig. 6 shows a schematic diagram of a process of managing timers at a receiving end in the prior art, where a SL process #c1 may correspond to RTT1 and RTT2. Specifically, the RTT1 may be associated with a SL process #c1 and information #c1, and RTT2 may be associated with a SL process #c1 and information #c2, the information #c1 corresponds to a TB1 for indicating a transmission characteristic of the TB1, the information #c2 corresponds to a TB3 for indicating a transmission characteristic of the TB1, wherein the information #c1 and the information #c2 may be at least one of the following: the source identifier, the destination identifier, the communication type, the HARQ attribute, the HARQ process ID, the sidelink process ID, and the information #c1 and the information #c2 are different.

Optionally, the SL process #c1 may correspond to RTT1 and RTT2, the terminal device #a sends feedback information FB3 corresponding to TB3, and may configure an RTT2 timing duration according to DRX configuration information DRX2 corresponding to TB3 and start the RTT2. It can be appreciated that, after the terminal device #a determines that the SL process #c1 is unoccupied, starting the timer RTT1 when the feedback signal FB1 of the TB1 is sent, the timer RTT1 times out, and starting the retransmission timer to monitor the side uplink transmission increases the activation time and increases the power consumption.

Fig. 7 is a schematic diagram showing a procedure of managing timers at a receiving end in the related art. The method shown in fig. 5 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a. The method comprises the following implementation steps:

step 1: terminal device #a decodes transport block TB1 received on SL process #d1.

Step 2: the terminal device #a determines that the TB1 decoding is successful, and determines the SL process #b1 as unoccupied.

Step 3: the terminal device #a transmits a feedback signal FB1 corresponding to the TB1 to the terminal device #b (i.e., an example of the transmitting terminal device), and starts an RTT timer corresponding to the SL process #d1 according to the DRX configuration information DRX1 corresponding to the TB1.

Optionally, the timer RTT is associated with the SL process #b1.

Step 4: terminal apparatus #a receives transport block TB2 transmitted by terminal apparatus #b through SL process #d1.

Step 5: terminal device #a transmits feedback signal FB2 corresponding to the TB2 to terminal device #b.

Alternatively, the moment when the terminal device #a receives the TB3 may be located within a timing interval corresponding to the RTT timer, as shown in fig. 7.

Alternatively, the moment when the terminal device #a receives TB3 may also be located between the timing intervals of the retransmission timer. This application is not limited thereto.

It should be noted that, the time domain location of the receiving TB2 may not be located in the timer interval of the RTT timer or the retransmission timer, which is not limited in this application. This application is not limited thereto.

Alternatively, after the SL process #b1 is determined to be unoccupied, the terminal device #a may allocate the SL process #d1 to receive the new transmission data.

Fig. 7 shows a case where one timer is associated with one process.

Alternatively, one process may also correspond to a plurality of timers. As shown in fig. 8, fig. 8 is a schematic diagram showing a procedure of managing timers at a receiving end in the related art. In fig. 8, one process corresponds to a plurality of timers, which are similar to the case where the SL process #c1 shown in fig. 6 may correspond to RTT1 and RTT2, and detailed descriptions thereof are omitted for avoiding redundant description.

Fig. 9 shows a schematic flow chart of a method 200 of wireless communication provided in an embodiment of the present application. The method 200 shown in fig. 9 may be applied to a side-downlink hybrid automatic repeat request process, and the method 200 may be performed by a receiving-side terminal device in fig. 1, for example, by the terminal device 106, 107 or 108 in fig. 1, and the receiving-side terminal device is denoted by a terminal device #a for convenience of description. As shown in the method 200 of fig. 9, the terminal device #a can control the working state of the first timer by determining that the first process meets the first condition, thereby avoiding additional listening time caused by the continuous timing of the first timer and reducing energy consumption. The method 200 includes:

s210, the terminal device #A determines that a first process satisfies a first condition, wherein the first process is used for transmitting first sidestream data;

alternatively, the side row data may be a transport block TB.

Alternatively, the condition #1 (i.e., an example of the first condition) is that the first process is unoccupied (buffered).

The first process may be a side-link SL hybrid automatic repeat response HARQ process. For example, the first process is a HARQ process for PC5 communication.

It should be noted that, if the first process is unoccupied, it may be understood that the first process is in an unoccupied state, or if the first process is unoccupied, it may be understood that the first process is released, or the first process is in an idle state, or the terminal device #a allows the first process to be used for receiving other transmissions, for example, the terminal device #a releases the first process.

Optionally, the terminal device #a determines that the third condition is satisfied, and determines that the first process is unoccupied.

For example, condition #3 (i.e., an example of the third condition) may decode the data #a (i.e., an example of the first side line data) successfully. It should be noted that, after the terminal device #a successfully decodes the data #a, the first process is determined as unoccupied;

for another example, the condition #3 may also be that the decoding of the data #a fails, and new transmission data #b having the same information identification is received. The information identity may include a source identity (SRC ID), a destination identity (DST ID), a HARQ attribute, and a communication type (cast type), which may also be referred to as a traffic type, which may be a unicast, multicast or broadcast type, and optionally the terminal device #a allocates a second procedure for receiving the newly transmitted data #b. A new transmission or retransmission of data may be represented by the information identification and NDI information. For example, the terminal device #a receives the sidestream control information SCI transmitted from the terminal device #b, reads and determines the information identification and NDI information contained in the SCI. Determining whether the terminal equipment #A receives the same information, comparing whether the NDI information in the SCI corresponding to the identification information received for the first time and the NDI information in the SCI corresponding to the identification information received for the second time are the same under the condition that the same information is received for the same information, and determining that the data is retransmission data under the condition that the NDI information is the same for the two times; and under the condition that the NDI information is different for two times (namely NDI value overturn and toggle), determining the data as new transmission data. It should be noted that, when the data #a is received at the second process, it is understood that the data #a has an association relationship with the second process.

Optionally, the condition #1 may also be successful in decoding the data #a.

Optionally, the condition #1 may also be to allocate the first process for receiving a new transport TB.

Alternatively, the condition #1 may also be feedback information associated with the transmission data #a.

The feedback information may determine to send a positive acknowledgement information ACK or not to send a negative acknowledgement information NACK for the terminal device #a (in this embodiment #a is the receiving UE). The feedback information may correspond to two different static feedback modes, the first mode being to send ACK/NACK, e.g. to correctly receive data, to send ACK information, and to incorrectly receive data to send NACK information. The second mode is to send only NACKs, e.g., no NACKs are sent for correctly received data, and NACKs are sent for incorrectly received data. It will be appreciated that the feedback information corresponds to this second static feedback mode in the case that no NACK is sent.

S220, the terminal device #a stops the first timer for indicating the minimum duration for which the retransmission is expected to be received, or the first timer for indicating the duration for which the wakeup is maintained.

It should be noted that, the duration of the first timer for indicating to keep awake may also be understood as:

Alternatively, the first process may correspond to one or more first timers, the first timers being associated with the first process, or the first timers being associated with the first process and first information, the first information comprising at least one of: source identification, destination identification, communication type, hybrid automatic repeat request (HARQ) attribute, sidelink process ID, and HARQ process ID.

For example, the first process corresponds to a first timer associated with the first process. It is understood that associating the first timer with the first process may be understood that the first timer has a one-to-one correspondence with the first process. Specifically, for example, the process #a (i.e., an example of the first process) corresponds to the RRT timer #a (i.e., an example of the first timer), and the timing duration of the RRT timer #a may be switched according to different DRX configurations. If the process #a is associated with the pair1 at the time T1, the length of the RRT timer #a is the timing length of the RRT timer #a provided in the DRX configuration corresponding to the pair 1; at time T2, the receiving side terminal device allocates a procedure #a for receiving the side uplink transmission of the pair2 (i.e., the procedure #a is associated with the pair 2), and the RTT timer of the procedure #a has a length of a timing length provided in the DRX configuration corresponding to the pair 2.

For another example, the first process corresponds to a plurality of first timers, the first timers being associated with the first process and the first information. Specifically, for example, the process #b (i.e., an example of the first process) corresponds to a plurality of RTT timers (i.e., a plurality of first timers, such as RTT #b1, RTT #b2 … …). The process #b associates different RTT timers for each of the DRX configurations provided by the pair, respectively. If the process #b is associated with the pair1 at the time T1, the length of the timer is the timing length of RTT #b1 provided in the DRX configuration corresponding to the pair 1; at time T2, the receiving side terminal device allocates the process #b for receiving the side uplink transmission of the pair2, and associates a timer RTT #b2 for the process #b, where the timing length is the length of RTT #b2 provided in the DRX configuration corresponding to the pair2.

It should be appreciated that the above-described pair may be identified by a set of source and destination identifications, the pair corresponding to a set of source and destination identifications, e.g., { destination identification 1, source identification 1} for identifying pair1, { destination identification 2, source identification 2} for identifying pair2; or the pair may be identified by a side-link identifier (link identifier), e.g. side-link identifier 1 for identifying pair1 and side-link identifier 2 for identifying pair2; or the pair corresponds to a set of transmitting and receiving devices, for example, transmitting device 1 and receiving device 1 may be referred to as pair1, and transmitting device 1 and receiving device 2 may be referred to as pair2. The transmitting device and the receiving device may be terminal devices, network devices, etc., which are not limited herein.

Optionally, the first timer is a round trip transmission time RTT timer or a retransmission timer (Retransmission Timer). It is understood that the terminal device #a stops the first timer, and it is understood that the RTT timer is stopped or the retransmission timer is stopped. It should be appreciated that in other embodiments, other timers may be used for the first timer to perform the functions of the first timer described above.

Optionally, the condition #1 is that the first process is not occupied, and before step S210, the method 200 may further include:

and receiving the first side line data or sending first feedback information of the first side line data, and starting or restarting the first timer.

Specifically, for example, the first timer may be started after the terminal device #a receives the physical side uplink control channel PSCCH or the physical side uplink shared channel PSSCH transmitted by the terminal device #b (i.e., an example of the transmitting side terminal device). If, after receiving the sidestream control information SCI sent by the terminal device #b, the terminal device #a receives the PSSCH sent by the terminal device #b according to the SCI; the terminal device #a receives the PSSCH and starts the first timer. Or, after receiving the sidestream control information SCI sent by the terminal device #b, the terminal device #a starts the first timer.

For another example, the first timer may be started after the physical sidelink feedback channel PSFCH sent by the terminal device #a to the terminal device #b. If, after receiving the sidestream control information SCI sent by the terminal device #b, the terminal device #a receives the PSSCH sent by the terminal device #b according to the SCI; after receiving the PSSCH, the terminal device #A transmits the PSFCH to the terminal device #B according to the decoding result, and starts or restarts the first timer.

Optionally, the first feedback information is feedback information corresponding to the first side line data, for example, the first feedback information may be transmitted on a physical side line feedback channel PSFCH.

Fig. 10 to 13 are schematic diagrams illustrating a method for managing timers according to an embodiment of the present application. As shown in fig. 10 to 13, the method shows a possible implementation method of the processing of the timer by the receiving side terminal device, and the method shown in fig. 10 to 13 is used for processing the timer after the data transmission block TB is processed.

Fig. 10 is a schematic diagram illustrating a procedure of a receiving side management timer in the method for wireless communication according to the embodiment of the present application. The method shown in fig. 10 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a.

It should be noted that, in the embodiments of the present application, the steps involved are not strictly time-constrained, in some embodiments, the steps described below may be performed in time sequence, and in other embodiments, the steps may be performed synchronously, which is not limited in the embodiments of the present application.

Step 1: the terminal device #a decodes the transport block TB1 received by the SL process #1, and starts the RTT timer according to the configuration information DRX1 corresponding to the TB 1.

Alternatively, the terminal device #a may start a corresponding RTT timer upon receiving TB 1.

Step 2: the terminal device #a determines that the SL process #1 is unoccupied, and stops the RTT timer or the retransmission timer.

It should be understood that, when the terminal device #a determines that the SL process #1 is unoccupied, new transmission data for the same information #1 may be received for the terminal device #a, and optionally, the terminal device #a allocates the SL process #2 to receive the new transmission data, where the transmission information #1 at least includes one or more of the following: source identification, destination identification, communication type, hybrid automatic repeat request (HARQ) attribute, HARQ process ID, sidelink process ID

In one possible scenario, when the terminal device #a determines that the SL process #1 is unoccupied, the RTT timer may have timed out, and the retransmission timer is started after the RTT is timed out, where the RTT timer is not running and the retransmission timer is running, and the retransmission timer is stopped.

Step 3: terminal device #a transmits feedback information fb#1 corresponding to the TB1 to terminal device #b.

It should be understood that the feedback information fb#1 is feedback information that the terminal device #a transmits to the terminal device #b corresponding to the TB1, and the feedback may be positive acknowledgement information ACK or negative acknowledgement information NACK, or no ACK or NACK is transmitted. It should also be appreciated that the two feedback signals correspond to different static feedback modes.

Step 4: the terminal device #A distributes the SL process #1 to receive new transmission data TB3, starts or restarts the RTT timer according to the DRX configuration information DRX2 of the TB3, and/or transmits feedback information FB3 corresponding to the TB 3.

It should be noted that, in fig. 10, the timing duration of the RTT timer shown in fig. 10 is only a schematic example, and the hatched portion in fig. 10 indicates the duration corresponding to the stop RTT timer of the SL process #1 after the SL process #1 is unoccupied, where the corresponding RTT timer corresponds to one RTT timer.

It should be noted that, the steps 1 to 4 have no time sequence, and the execution sequence may be exchanged at will. For example, after the terminal device #a transmits feedback information fb#1 corresponding to the TB1 to the terminal device #b, the SL process #1 is determined to be unoccupied, and then the RTT timer or the retransmission timer is stopped.

For another example, fig. 10 illustrates only a case where the RTT timer is started when the TB1 is received, but the present application is not limited thereto.

It should be noted that, in fig. 10, the time of receiving TB3 may be within a time range after the RTT timing is timed out, or the time of receiving TB3 may be within a timing time range of the RTT. The present application is not limited thereto.

Fig. 11 is a schematic diagram illustrating a procedure of a receiving side management timer in the method of wireless communication according to the embodiment of the present application. The method shown in fig. 11 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a.

Step 1: terminal device #A receives transport block TB1 through SL process #1, and starts RTT timer according to configuration information DRX1 corresponding to TB 1.

Alternatively, the terminal device #a may start a corresponding RTT timer upon receiving TB 1.

Step 2: the terminal device #a determines that the TB1 decoding is successful, determines the SL process #1 as unoccupied, and stops the RTT timer.

Optionally, step 2 may further be that the terminal device #a determines that the TB1 decoding is successful, and stops the RTT timer.

Optionally, in step 2, the terminal device #a may send feedback information corresponding to the TB1, and stop the RTT timer. The feedback information may be sending a positive acknowledgement information ACK or not sending a negative acknowledgement information NACK.

Step 3: optionally, the terminal device #a transmits feedback information fb#1 corresponding to the TB1 to the terminal device #b.

Step 4: optionally, the terminal device #a allocates the SL process #1 to receive the new transmission data TB3, starts the RTT timer according to the configuration information DRX2 of the TB3, and transmits feedback information FB3 corresponding to the TB 3.

Note that, the reception time of TB3 shown in fig. 11 is within the RTT timer timing time range, and for example, only starting the RTT timer when TB1 is received is shown in fig. 11, but the present application is not limited thereto.

It should be noted that, in fig. 11, the decoding success and decoding failure correspond to the execution steps in fig. 10, and the manner of starting the RTT timer in fig. 11 and fig. 10 is the same, and the detailed description thereof is omitted for avoiding redundant description.

It should be noted that, the steps 1 to 4 have no time sequence, and the execution sequence may be exchanged at will. For example, after the terminal device #a transmits feedback information fb#1 corresponding to the TB1 to the terminal device #b, the SL process #1 is determined to be unoccupied, and then the RTT timer or the retransmission timer is stopped.

Optionally, the terminal device #a determines that the TB1 decoding is successful, and does not start the RTT timer. Or, the terminal device #a determines that the TB1 decoding fails, and starts an RTT timer. For example, when the terminal device #a determines that decoding fails, the RTT timer is started, or when negative feedback information NACK corresponding to TB1 is transmitted, and negative feedback information NACK corresponding to TB1 is generated, the RTT timer is started.

Fig. 12 is a schematic diagram illustrating a procedure of a receiving side management timer in the method of wireless communication according to the embodiment of the present application. The method shown in fig. 12 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a.

Step 1: terminal device #a receives transport block TB1 through SL process #3, and starts RTT timer according to configuration information DRX1 corresponding to TB 1.

Alternatively, the terminal device #a may start a corresponding RTT timer upon receiving TB 1.

Step 2: the terminal device #a determines that the SL process #3 is unoccupied, and stops the RTT timer.

In one possible scenario, when the terminal device #a determines that the SL process #1 is unoccupied, the RTT timer may have timed out, and the retransmission timer is started after the RTT is timed out, where the RTT timer is not running and the retransmission timer is running, and the retransmission timer is stopped.

Step 3: optionally, the terminal device #a transmits feedback information fb#1 corresponding to the TB1 to the terminal device #b.

It should be understood that the feedback information fb#1 is feedback information that the terminal device #a transmits to the terminal device #b corresponding to the TB1, and the feedback may be positive acknowledgement information ACK or negative acknowledgement information NACK, or no ACK or NACK is transmitted. It should also be appreciated that the two feedback signals correspond to different static feedback modes.

Step 4: the terminal device #A distributes the SL process #3 to receive the new transmission data TB3, starts the RTT timer according to the configuration information DRX2 of the TB3, and transmits the feedback information FB3 corresponding to the TB 3.

Optionally, this RTT1 is associated with SL process #3 and information #31, and RTT2 is associated with SL process #3 and information # 32. The information #31 and the information #32 may be at least one of a source identification (SRC ID), a destination identification (DST ID), a communication type, or a hybrid automatic repeat request (HARQ) attribute, a HARQ process ID, a sidelink process ID, and the information #31 and the information #32 may be different. For example, information #31 may correspond to { SRC ID 1, DST ID 1}, and information #32 may correspond to { SRC ID 2, DST ID 2}.

Note that, in fig. 12, the timing duration of the RTT timer shown in fig. 10 is only a schematic example, and the hatched portion in fig. 10 indicates the duration corresponding to the stop RTT timer of the SL process #1 after the SL process #1 is not occupied, where the two RTT timers (i.e., the first process corresponds to one example of the plurality of first timers) correspond to the SL process # 3.

For another example, fig. 10 illustrates only a case where the RTT timer is started when the TB1 is received, but the present application is not limited thereto.

It should be noted that, in fig. 10, the time of receiving TB3 may be within the time range occupied by the RTT timing timeout, or the time of receiving TB3 may be within the timing time range of the RTT. The present application is not limited thereto.

Fig. 13 is a schematic diagram illustrating a procedure of a receiving side management timer in the method of wireless communication according to the embodiment of the present application. The method shown in fig. 13 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a.

Step 1: terminal device #a receives transport block TB1 through SL process # 4.

The RTT1 is associated with SL process #4 and information # 41.

Step 2: terminal device #a determines that the SL process #4 is unoccupied.

It should also be noted that this RTT2 correlates with SL process #4 and information # 42. The information #41 and the information #42 may be different.

Step 3: terminal device #a transmits feedback information fb#1 corresponding to the TB1 to terminal device #b.

Step 4: the terminal device #a allocates the SL process #4 to receive the new transmission data TB3, starts the RTT timer (i.e., RTT 2) according to the configuration information DRX2 of the TB3, and transmits feedback information FB3 corresponding to the TB 3.

In step 2, it is understood that the SL process #4 is determined to be unoccupied, and that the SL process #4 and the information #41 have no association, or the terminal device #a releases the association between the SL process 4 and the information 41. The timer RTT1 is not started after the TB1 decoding fails.

It should be understood that the above-described embodiments are illustrative only and the present application is not limited thereto.

Fig. 14 shows a schematic flow chart of a wireless communication method 300 provided by an embodiment of the present application. The method 300 shown in fig. 10 may be applied to the system shown in fig. 1, and the method 200 may be performed by the receiving-side terminal device in fig. 1, for example, by the terminal device 106, 107 or 108 in fig. 1, and the receiving-side terminal device is denoted by a terminal device #a for convenience of description. As shown in the method 300 of fig. 14, the terminal device #a can control the working state of the first timer by determining that the first process meets the first condition, thereby avoiding the extra listening time caused by the continuous timing of the first timer, reducing the energy consumption, and further avoiding the influence of the operation of the first timer on the activation time of the second sidestream data.

The method 300 includes:

s310, the terminal device #A determines that a first process satisfies a first condition, and the first process is used for transmitting first sidestream data;

alternatively, the first condition may be that the first process is unoccupied;

optionally, the first condition may be that the first side data is successfully decoded;

optionally, the first condition may be sending feedback information of the first sidestream data.

It should be noted that, the step S310 and the step S210 have the same execution steps, and detailed descriptions thereof are omitted for avoiding redundant description.

S320, the terminal device #A determines that the first process meets a second condition, wherein the second condition is that the first process receives second sidestream data;

alternatively, the second side row data may be transport block tb#2.

It should be noted that, the terminal device #a may determine that the sidelink HARQ process is in an unoccupied state (or is unoccupied), the terminal device #a may allocate the unoccupied process for transmitting the second sidelink data, for example, the terminal device #a may allocate the first process to receive the second sidelink data. It will be appreciated that after a process is determined to be unoccupied, the process will not perform a retransmission process for the associated transport block TB before it is determined to be unoccupied. Or the terminal device #a does not process the transport block TB associated with the process before being determined to be unoccupied.

S330, the terminal device #a stops the first timer for indicating the minimum duration for which the retransmission is expected to be received, or for indicating the duration for which the wakeup is maintained.

Alternatively, the terminal device #a determines that the first process satisfies the first condition and the second condition, and stops the first timer.

Optionally, the method 300 may further include:

and the terminal device #A starts or restarts the first timer according to the configuration information corresponding to the second sidestream data.

Alternatively, the configuration information may be DRX configuration information.

Optionally, the terminal device #a configures configuration information of the second sidestream data according to the first signaling. The first signaling may be RRC signaling. Specifically, for example, the RRC layer of the terminal device #a instructs the MAC to configure DRX configuration information of the ID pair corresponding to the second sidestream data. This step may be performed as a separate scheme from the other steps, or may be performed as a scheme in combination with any other step.

It should be noted that, the execution of step S330 and step S220 is similar, and detailed descriptions thereof are omitted here to avoid redundancy. For example, the first process in step S330 may correspond to one first timer, and for another example, the first process in step S330 may correspond to a plurality of first timers.

Fig. 15 to 18 are schematic diagrams illustrating a procedure of a receiving side management timer in the method of wireless communication provided in the embodiment of the present application. As shown in fig. 15 to 18, the method shows a further possible implementation of the processing of the timer by the receiving side terminal device, and the method shown in fig. 10 to 13 is used for processing the timer when new transmission data (TB) is received on the side uplink process.

Fig. 15 is a schematic diagram illustrating a procedure of a receiving side management timer in the method of wireless communication according to the embodiment of the present application. The method shown in fig. 15 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a (e.g., terminal device 107).

Step 1: terminal device #a receives transport block TB1 through SL process #1, and starts RTT timer according to configuration information DRX1 corresponding to TB 1.

Alternatively, the terminal device #a may start a corresponding RTT timer upon receiving TB 1.

Step 2: terminal device #a determines that the SL process #1 is unoccupied.

It should be understood that, when the terminal device #a determines that the SL process #1 is unoccupied, new transmission data for the same information #1 may be received for the terminal device #a, and optionally, the terminal device #a allocates the SL process #2 to receive the new transmission data, where the transmission information #1 at least includes one or more of the following: source identification, destination identification, communication type, hybrid automatic repeat and response (HARQ) attribute, HARQ process ID, sidelink process ID.

Step 3: optionally, the terminal device #a transmits the feedback signal fb#1 corresponding to the TB1 to the terminal device #b through the SL process #1.

It should be understood that the feedback signal fb#1 is a feedback signal that the terminal device #a transmits to the terminal device #b corresponding to the TB1, and the feedback may be positive acknowledgement information ACK or negative acknowledgement information NACK or no ACK or NACK is transmitted. It should also be appreciated that the two feedback signals correspond to different static feedback modes.

Step 4: the terminal device #A allocates the SL process #1 to receive new transmission data TB3, stops the running RTT timer, and starts the RTT timer according to configuration information DRX2 of the TB 3.

Note that, in fig. 15, the time of receiving TB3 by the SL process #5 may be within the RTT timing time range, or the time of receiving TB3 may be outside the RTT timing time range, for example, the time of receiving TB3 may also be within the running time range of the retransmission timer. Fig. 15 only schematically shows the timing time range of the RTT timer, and the present application is not limited thereto. For example, a retransmission timer may also be included in the schematic diagram shown in fig. 15.

In one possible scenario, when the terminal device #a determines that the SL process #1 is unoccupied, the RTT timer may have timed out, and the retransmission timer is started after the RTT is timed out, where the RTT timer is not running and the retransmission timer is running, and the retransmission timer is stopped.

Optionally, in the case that the RTT timer is running (i.e. the RRT timer is running according to the configuration of the configuration information DRX 1), receiving a new transport TB through the SL process #5, and restarting the RTT timer according to the RTT configuration of the DRX corresponding to the new transport data (i.e. TB 3);

Optionally, in the case that the retransmission timer is running (i.e. the RTT timing is timeout, the retransmission timer is started), receiving a new TB through the SL process #5, and stopping the retransmission timer, and restarting the RTT timer according to the RTT configuration of the DRX corresponding to the new data (i.e. TB 3);

optionally, the running timer (RTT timer or retransmission timer) is stopped upon receiving a new TB through the SL process # 5.

Step 5: optionally, feedback information FB3 corresponding to the TB3 is sent.

It should be noted that, in fig. 15, the SL process #5 corresponds to one RTT timer (i.e., the first process corresponds to one first timer), and the timing duration of the RTT timer shown in fig. 15 is only a schematic example.

It should be noted that, the above steps 1 to 5 have no time sequence, and the execution sequence may be exchanged at will.

For another example, fig. 15 illustrates only a case where the RTT timer is started when TB1 is received, but the present application is not limited thereto.

Fig. 15 shows a case where the TB1 decoding fails and the transport block is received through the SL process, but the present application is not limited thereto, and for example, fig. 15 may also correspond to a case where the TB1 decoding is successful, or start the RTT timer after transmitting the feedback signal of the transport block TB. It should be noted that, the method of process management as shown in fig. 16 may be illustrated by the method that the TB1 is successfully decoded and the RTT timer is started after the feedback information of the transport block TB is transmitted.

The schematic diagram of the receiving-side management timer procedure in the method of wireless communication provided in the embodiment of the present application as shown in fig. 16 may be applied to the receiving-side terminal device in fig. 1, for example, executed by the terminal device #a (e.g., the terminal device 107).

In the method shown in fig. 16, optionally, in a case where the RTT timer or the retransmission timer is running (i.e., the RRT timer or the retransmission timer is running according to the configuration of the configuration information DRX 1), a new TB is received through the SL process #6, the RRT timer is stopped, and the RTT timer is started according to the RTT configuration of the DRX corresponding to the new data (i.e., TB 3).

Fig. 17 is a schematic diagram illustrating a procedure of a receiving side management timer in the method of wireless communication according to the embodiment of the present application. The method shown in fig. 17 may be performed by the receiving-side terminal device in fig. 1, such as by terminal device #a (e.g., terminal device 107).

Step 1: terminal device #a receives transport block TB1 through SL process #7, and starts RTT timer (RTT 1) according to configuration information DRX1 corresponding to TB 1.

Alternatively, the terminal device #a may start a corresponding RTT timer upon receiving TB 1.

Step 2: terminal device #a determines that the SL process #1 is unoccupied.

It should be understood that, when the terminal device #a determines that the SL process #7 is unoccupied, new transmission data for the same information #1 may be received for the terminal device #a, and optionally, the terminal device #a allocates the SL process #2 to receive the new transmission data, where the transmission information #1 at least includes one or more of the following: source identification, destination identification, communication type, hybrid automatic repeat and response (HARQ) attribute, HARQ process ID, sidelink process ID.

Step 3: terminal device #a transmits feedback signal fb#1 corresponding to the TB1 to terminal device #b.

It should be understood that the feedback signal fb#1 is a feedback signal that the terminal device #a transmits to the terminal device #b corresponding to the TB1, and the feedback may be positive acknowledgement information ACK or negative acknowledgement information NACK or no ACK or NACK is transmitted. It should also be appreciated that the two feedback signals correspond to different static feedback modes.

Step 4: the terminal device #a allocates the SL process #7 to receive the new transmission data TB3, stops the retransmission timer, and starts the RTT2 timer according to the DRX configuration information DRX2 of the TB 3.

Alternatively, terminal device #a allocates the SL process #7 to receive new transmission data TB3, stops the retransmission timer,

fig. 17 shows only a timing range of the RTT timer schematically, and the present application is not limited thereto. For example, a retransmission timer may also be included in the schematic diagram shown in fig. 17.

Optionally, in the case that the RTT timer is running (i.e. the RRT timer is running according to the configuration of the configuration information DRX 1), a new transport TB is received by the SL process #7, and the timer RTT1 is stopped;

alternatively, in case a retransmission timer is running (i.e. the RTT timing times out, the retransmission timer is started), a new transmission TB is received through the SL process #7, and the retransmission timer is stopped.

Step 5: and sending feedback information FB3 corresponding to the TB 3.

In fig. 17, the SL process #7 corresponds to two RTT timers (i.e., the first process corresponds to one example of the plurality of first timers), and the timing duration of the RTT timers shown in fig. 17 is only a schematic example.

It should be noted that, the above steps 1 to 5 have no time sequence, and the execution sequence may be exchanged at will.

For another example, fig. 17 only illustrates a case where the RTT timer is started when TB1 is received, but the present application is not limited thereto.

Fig. 17 shows a case where the TB1 decoding fails and the transport block is received through the SL process #7, but the present application is not limited thereto, and for example, fig. 17 may also correspond to starting the RTT timer after the feedback signal of the transport block TB1 is transmitted. It should be noted that, starting the RTT timer after the feedback signal of the transport block TB1 is transmitted may be as shown in a schematic diagram of a process management method shown in fig. 18.

The schematic diagram of the receiving-side management timer procedure in the method of wireless communication provided in the embodiment of the present application as shown in fig. 18 may be applied to the receiving-side terminal device in fig. 1, for example, executed by the terminal device #a (e.g., the terminal device 107).

In the method shown in fig. 18, optionally, in case the timer RTT1 is running (i.e. the RRT timer is running according to the configuration of the configuration information DRX 1), a new transmission TB2 is received by the SL process #8, and the timer (RRT 1 or retransmission timer # 1) is stopped.

The stop RTT timer or the retransmission timer shown in fig. 17 is a timer (RTT 1 or retransmission timer) associated with SL process #7 and information #71 before release of SL process # 7; the stop RTT timer or retransmission timer shown in fig. 18 is a timer (RTT 1 or retransmission timer) associated with SL process #8 and information #81 before release of SL process # 8.

Fig. 19 shows a schematic flow chart of a method 400 of wireless communication provided by an embodiment of the present application. The method 400 shown in fig. 19 may be applied to a side-downlink hybrid automatic repeat request process, and the method 400 may be performed by a receiving-side terminal device in fig. 1, for example, by the terminal device 106, 107 or 108 in fig. 1, and the receiving-side terminal device is denoted by a terminal device #a for convenience of description. As shown in the method 400 of fig. 19, when the terminal device #a determines that the fourth process satisfies the fourth condition, by determining that the fourth process is in the unoccupied state, the influence on the activation time of other sidestream data when the fourth process is allocated for transmitting other sidestream data when the fourth process successfully decodes the sidestream data can be avoided, and in addition, by determining that the fourth process is unoccupied, additional listening time can be avoided, and energy consumption can be reduced. The method 400 includes:

S410, the terminal equipment determines that a fourth process meets a fourth condition, wherein the fourth process is used for transmitting fourth sidestream data;

alternatively, the fourth condition may be that the fourth side line data is successfully decoded and a fourth timer is timed out, where the fourth timer is used to time the fourth process.

After the fourth timer times out, the fourth timer is stopped at a fixed time.

Optionally, the fourth timer is associated with the fourth process, or the fourth timer is associated with the fourth process and fourth information. The association of the fourth timer with the fourth process may be understood as a one-to-one correspondence of the fourth timer with the fourth process, and the association of the fourth timer with the fourth process and the fourth information may be understood as a correspondence of the fourth timer with a plurality of timers.

S420, determining that the fourth process is unoccupied;

alternatively, the fourth process being unoccupied may be understood as the fourth process being in an unoccupied state. The fourth process being unoccupied may also be understood as the fourth process not being associated with a timer, or the fourth process not being associated with a timer or fourth information, the fourth information may comprise at least one of: source identity, destination identity, communication type, hybrid automatic repeat and response HARQ attribute.

S430, receiving fifth side line data through the fourth process.

Alternatively, the fifth side line data may be new transmission data, for example, the fifth side line data may be TB2, and the fourth side line data may be TB1.

Optionally, the fifth side line data has a different pair of information than the fourth side line data.

Fig. 20 shows a schematic flow chart of another method 500 of wireless communication provided by an embodiment of the present application. The method 500 shown in fig. 20 may be applied to a side-uplink hybrid automatic repeat request process, and the method 500 may be performed by a transmitting side terminal device in fig. 1, for example, by the terminal device 104 in fig. 1, and is denoted by a terminal device #c (i.e., an example of a transmitting side terminal device) for convenience of description. As shown in the method 500 of fig. 20, when the sixth process satisfies the condition of successful data transmission, the sixth timer is stopped or not started, so that the influence of the continuous timing of the sixth timer on the service transmission of the sixth process after the successful data transmission can be avoided. The method 500 includes:

s510, the terminal device #C determines that the sixth process meets a sixth condition, wherein the sixth condition is used for transmitting sixth side line data, and the sixth condition is that the transmission of the sixth side line data is completed;

Optionally, the sixth condition may be that first acknowledgement information is sent to the network device on a first physical uplink control channel PUCCH; for example, a positive acknowledgement information ACK is sent on the first PUCCH.

Optionally, the sixth condition may be that the first acknowledgement information of the terminal device #d (i.e., an example of the receiving terminal device) is received at the first physical side feedback channel PSFCH, and the first acknowledgement information may be positive acknowledgement information ACK;

optionally, the sixth condition may be that no negative acknowledgement information NACK is received;

optionally, the sixth condition may be further that the first physical sidelink shared channel PSSCH is transmitted on the sixth process.

S520, stopping or not starting a sixth timer, where the sixth timer is used to indicate a minimum duration for which retransmission resources are expected to be received, or the first timer is used to indicate a duration for keeping awake.

The method further comprises the step that the terminal equipment #C determines that the data transmission of the sixth side line fails, and then a sixth timer is started or restarted. Illustratively, determining that the sixth-side row data transmission failed may include: a side-uplink negative feedback NACK is received, or no ACK or NACK is received. Reference may be made to the above embodiments for specific methods, and details are not repeated.

Fig. 21 shows a schematic flow chart of a method 600 of yet another wireless communication provided by an embodiment of the present application. The method 600 shown in fig. 21 may be applied to a side-uplink hybrid automatic repeat request process, and the method 600 may be performed by a transmitting side terminal device in fig. 1, for example, by the terminal device 104 in fig. 1, and is denoted by a terminal device #c (i.e., an example of a transmitting side terminal device) for convenience of description. As shown in the method 600 of fig. 21, when the terminal device #c determines that the seventh process satisfies the seventh condition, by determining that the seventh process is in the unoccupied state, when the seventh process is being allocated for transmitting the eighth side line data, the seventh timer can be prevented from continuing to run under the configuration information corresponding to the seventh side line data and affecting the timing of the eighth side line data. The method 600 includes:

s610, the terminal device #C determines that a seventh process meets a seventh condition, wherein the seventh process is used for transmitting seventh side line data, and the seventh process corresponds to a seventh timer;

optionally, the seventh condition may be that the seventh timer is not running, the seventh timer is used to instruct the network device to schedule the listening time of the seventh process, or indicate a minimum duration in which retransmission resources are expected to be received, or the first timer is used to indicate a duration in which wakeup is kept.

Illustratively, the seventh timer not running may be understood as the seventh timer being in a stopped state, e.g., the terminal device #c may stop the fourth timer running in some cases. For example, when the terminal device #c receives a new transmission schedule for the same HARQ ID, optionally, the terminal device #c allocates a seventh process receiving process to the new transmission resource, the terminal device #c stops the four timers; or, the terminal device #A confirms that the seventh side data transmission is successful, and stops the seventh timer; or, if the terminal device #c preempts the seventh process for processing other side uplink resources, the terminal device stops the seventh timer; alternatively, if the seventh timer times out, the seventh timer is stopped.

S620, determining that the seventh process is unoccupied;

s630, transmitting eighth side line data through the seventh process, wherein the eighth side line data is different from the seventh side line data corresponding transmission information.

Method embodiments of the present application are described in detail above in connection with fig. 1-21, and apparatus embodiments of the present application are described in detail below in connection with fig. 22-24. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen in the preceding method embodiments.

Fig. 22 is a schematic diagram of a communication apparatus provided in an embodiment of the present application, and the communication apparatus 700 of fig. 22 may be the above-mentioned terminal device, for example, may be a specific example of the terminal devices 104, 107, 108 shown in fig. 1. The communication device 700 may be used to implement the steps performed by a terminal device, such as the method of fig. 9 or 14, as described above, and may also be used to implement the embodiments shown in fig. 10-13. To avoid redundancy, the description is not repeated.

The communication apparatus 700 shown in fig. 22 includes a determination unit 710, a stop unit 720.

A determining unit 710, configured to determine that a first process meets a first condition, where the first process is used to transmit first sidestream data.

A stopping unit 720, configured to stop a first timer, where the first timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake.

The first condition is that the first process is unoccupied, or the first side line data is successfully decoded, or feedback information of the first side line data is sent, or positive determination information ACK is received, or positive determination information ACK is sent, or negative determination information NACK is not received.

Optionally, the determining unit 710 is further configured to determine that the first process meets a second condition, where the second condition is that second sidestream data is received by the first process.

The stopping unit 720 is specifically configured to determine that the first condition and the second condition are satisfied, and stop the first timer.

Optionally, the communication device further includes a starting unit, where the starting unit is configured to start or restart the first timer according to configuration information corresponding to the second sidestream data.

Optionally, the communication device includes a configuration unit, where the configuration unit is configured to configure configuration information of the second sidestream data according to the first signaling.

Optionally, the determining unit is further configured to determine that the first process meets a third condition, and the first process is unoccupied.

Wherein the third condition is that the first side data is successfully decoded; or the third condition is that the first side row data decoding fails and the first side row data is received on a second process.

Optionally, the first process corresponds to one or more first timers, the first timers are associated with the first process, or the first timers are associated with the first process and first information, and the first information includes at least one of the following: source identification, destination identification, communication type, hybrid automatic repeat and response (HARQ) attribute, HARQ process ID, sidelink process ID.

Optionally, the first timer is a round trip transmission time RTT timer or a retransmission timer.

Optionally, the communication device comprises a starting unit for starting the first timer before stopping the first timer.

Optionally, the starting unit is specifically configured to determine that the first side data transmission fails, and start the first timer.

Optionally, determining that the first side data transmission fails includes: receiving negative acknowledgement information NACK; or alternatively

Transmitting negative determination information NACK to the network device; or the first feedback information is not received.

Fig. 23 is a schematic diagram of a communication apparatus provided in an embodiment of the present application, and the communication apparatus 800 of fig. 23 may be the above-mentioned terminal device, for example, may be a specific example of the terminal devices 104, 107, 108 shown in fig. 1. The communication apparatus 800 may be used to implement the steps performed by a terminal device, such as the method of fig. 19, above. To avoid redundancy, the description is not repeated.

The communication apparatus 800 shown in fig. 23 includes a determination unit 810.

A determining unit 810, configured to determine that a fourth process meets a fourth condition, where the fourth process is used to transmit fourth side line data.

The determining unit 810 is further configured to determine that the fourth process is unoccupied.

The fourth condition is that the fourth side line data transmission is completed, and a fourth timer is not running, where the fourth timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake.

Optionally, the fourth condition is that the fourth sidestream data transmission is completed, including: the fourth side line data is successfully decoded; or receiving new transmission data, wherein the new transmission data and the fourth side line data correspond to the same transmission information, and the transmission information is used for identifying the new transmission data.

Optionally, the fourth condition is that the fourth sidestream data transmission is completed, including: receiving positive determination information ACK; or transmitting positive determination information ACK; or no negative determination information NACK is received.

Optionally, the fourth timer is not running, including: the fourth timer times out; or the fourth timer is in a stopped state.

Fig. 24 is a schematic structural diagram of a terminal device 900 provided in an embodiment of the present application. The terminal device 900 may be applied to the system shown in fig. 1, and perform the functions of the terminal device in the above method embodiment. As shown, the terminal device 900 includes a processor 920 and a transceiver 910. Optionally, the terminal device 900 further comprises a memory 930. Illustratively, the processor 920, the transceiver 910 and the memory 930 may communicate with each other via an internal connection path to transfer control and/or data signals, the memory storing a computer program, and the processor 920 executing the computer program in the memory 930 to control the transceiver 910 to transceive signals. Optionally, the terminal device 900 may include a bus system 940, and information may be transferred between the transceiver 910, the processor 920, and the memory 930 via the bus system 940.

The processor 920 and the memory 930 may be combined into one processing device, where the processor 920 is configured to execute the program code stored in the memory 930 to implement the functions. In particular, the memory may also be integrated within the processor 920 or separate from the processor 920.

The transceiver 910 may include a receiver (or receiver, receiving circuitry) and a transmitter (or transmitter, transmitting circuitry). Illustratively, the receiver is configured to receive a signal and the transmitter is configured to transmit a signal.

It should be understood that the terminal device 900 shown in fig. 24 is capable of implementing the various processes related to the terminal device in the method embodiments shown in fig. 9, 14, 19, 20 or 21. The operations and/or functions of the respective modules in the terminal device 900 are respectively for implementing the corresponding flows in the above-described method embodiment. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.

The above-described processor 920 may be used to perform the actions described in the previous method embodiments as being implemented internally by the terminal device, while the transceiver 910 may be used to perform the actions described in the previous method embodiments as being transmitted to or received from the network device by the terminal device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.

Optionally, the terminal device 900 may further include a power source for providing power to various devices or circuits in the terminal device.

In addition, in order to make the functions of the terminal device more complete, the terminal device 900 may further include one or more of an input unit, a display unit, an audio circuit, a camera, a sensor, etc., and the audio circuit may further include a speaker, a microphone, etc.

The embodiment of the application also provides a processing device, which comprises a processor and a memory. The processor is configured to read the instructions stored in the memory and to receive signals via the receiver and to transmit signals via the transmitter to perform the method of any of the method embodiments described above.

It should be understood that the processing means described above may be one or more chips. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. By way of example, the non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the application, the application further provides a computer program product, which comprises: computer program code which, when executed by one or more processors, causes an apparatus comprising the processor to perform the method of the embodiments shown in fig. 9, 14, 19, 20 or 21.

According to the method provided by the embodiment of the application, the application further provides a computer readable storage medium storing program code, which when executed by one or more processors, causes an apparatus comprising the processor to perform the method in the embodiment shown in fig. 9, 14, 19, 20 or 21.

According to the method provided by the embodiment of the application, the application further provides a system, which comprises one or more terminal devices.

The network device in the above-mentioned respective apparatus embodiments corresponds entirely to the network device or the terminal device in the terminal device and method embodiments, the respective steps are performed by respective modules or units, for example, the steps of receiving or transmitting in the method embodiments are performed by the communication unit (transceiver), and other steps than transmitting and receiving may be performed by the processing unit (processor). Reference may be made to corresponding method embodiments for the function of a specific unit. The processor may be one or more, for example.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The network device in the above-mentioned respective apparatus embodiments corresponds entirely to the network device or the terminal device in the terminal device and method embodiments, the respective steps are performed by respective modules or units, for example, the steps of receiving or transmitting in the method embodiments are performed by the communication unit (transceiver), and other steps than transmitting and receiving may be performed by the processing unit (processor). Reference may be made to corresponding method embodiments for the function of a specific unit. Wherein the processor may be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between 2 or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

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.

The terms "rear" and "time" in the present application are not strictly limited to the time points.

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 in this 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 the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units 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 on 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 each embodiment 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.

In the above-described embodiments, the functions of the respective functional units may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (program) are loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in 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 described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope 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 present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (31)

1. A method of wireless communication, the method comprising:

   determining that a first process meets a first condition, wherein the first process is used for transmitting first sidestream data;

   stopping a first timer, wherein the first timer is used for indicating the minimum duration for which retransmission is expected to be received, or the first timer is used for indicating the duration for keeping awakening;

   the first condition is that the first process is unoccupied, or the first side line data is successfully decoded, or feedback information of the first side line data is sent, or positive determination information ACK is received, or positive determination information ACK is sent, or negative determination information NACK is not received.
2. The method according to claim 1, wherein the method further comprises:

   determining that the first process meets a second condition, wherein the second condition is that second sidestream data is received through the first process;

   the stopping the first timer includes:

   determining that the first condition and the second condition are satisfied, and stopping the first timer.
3. The method according to claim 2, wherein the method further comprises:

   and starting or restarting the first timer according to the configuration information corresponding to the second sidestream data.
4. A method according to claim 3, characterized in that the method further comprises:

   and configuring configuration information of the second sidestream data according to the first signaling.
5. The method according to any one of claims 1 to 4, further comprising:

   the first process meets a third condition, and the first process is determined to be unoccupied;

   wherein the third condition is that the first side data is successfully decoded; or (b)

   The third condition is that the first side row data decoding fails and the first side row data is received on a second process.
6. The method of any one of claims 1 to 5, wherein the first process corresponds to one or more first timers, the first timers being associated with the first process or the first timers being associated with the first process and first information, the first information comprising at least one of: source identity, destination identity, communication type, hybrid automatic repeat and response HARQ attribute.
7. The method according to any of claims 1 to 6, wherein the first timer is a round trip transmission time, RTT, timer or a retransmission timer.
8. The method of any one of claims 1 to 7, further comprising starting the first timer before stopping the first timer.
9. The method of any one of claims 1 to 8, wherein the starting the first timer comprises:

   determining that the first side data transmission fails,

   and starting the first timer.
10. The method according to any one of claims 1 to 9, wherein determining that the first side data transmission failed, the method comprising:

    receiving negative acknowledgement information NACK; or alternatively

    Transmitting negative determination information NACK to the network device; or alternatively

    First feedback information is not received, the first feedback information being associated with the first side uplink data.
11. A method of wireless communication, the method comprising:

    determining that a fourth process meets a fourth condition, wherein the fourth process is used for transmitting fourth sidestream data;

    determining that the fourth process is unoccupied;

    the fourth condition is that the fourth side line data transmission is completed, and a fourth timer is not running, where the fourth timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake.
12. The method of claim 11, wherein the fourth condition is that the fourth side-row data transmission is complete, the method comprising:

    The fourth side line data is successfully decoded; or alternatively

    And receiving new transmission data, wherein the new transmission data and the fourth side line data correspond to the same transmission information, and the transmission information is used for identifying the new transmission data.
13. The method of claim 12, wherein the fourth condition is that the fourth side-row data transmission is complete, the method further comprising:

    receiving positive determination information ACK; or alternatively

    Transmitting positive determination information ACK; or alternatively

    No negative determination information NACK is received.
14. The method according to any one of claims 11 to 13, wherein the fourth timer is not running, the method comprising:

    the fourth timer times out; or alternatively

    The fourth timer is in a stopped state.
15. A communication device, comprising: a receiving and transmitting unit and a processing unit,

    the processing unit is used for determining that a first process meets a first condition, and the first process is used for transmitting first sidestream data;

    the processing unit is further configured to stop a first timer, where the first timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake;

    The first condition is that the first process is unoccupied, or the first side line data is successfully decoded, or feedback information of the first side line data is sent, or positive determination information ACK is received, or positive determination information ACK is sent, or negative determination information NACK is not received.
16. The apparatus of claim 15, wherein the apparatus further comprises:

    the processing unit is further configured to determine that the first process meets a second condition, where the second condition is that second sidestream data is received through the first process;

    the processing unit is further configured to stop the first timer, and includes:

    the processing unit is further configured to determine to stop the first timer when the first condition and the second condition are satisfied.
17. The apparatus of claim 16, wherein the apparatus further comprises:

    the processing unit is further configured to start or restart the first timer according to configuration information corresponding to the second sidestream data.
18. The apparatus of claim 17, wherein the apparatus further comprises:

    the processing unit is further configured to configure configuration information of the second sidestream data according to the first signaling.
19. The apparatus according to any one of claims 15 to 18, further comprising:

    the processing unit is further configured to determine that the first process is unoccupied when the first process meets a third condition;

    wherein the third condition is that the first side data is successfully decoded; or (b)

    The third condition is that the first sidestream data decoding fails, and the transceiver unit receives the first sidestream data on a second process.
20. The apparatus of any of claims 15-19, wherein the first process corresponds to one or more first timers, the first timers being associated with the first process or the first timers being associated with the first process and first information, the first information comprising at least one of: source identity, destination identity, communication type, hybrid automatic repeat and response HARQ attribute.
21. The apparatus according to any of claims 15 to 20, wherein the first timer is a round trip transmission time, RTT, timer or a retransmission timer.
22. The apparatus according to any one of claims 15 to 21, further comprising, before stopping the first timer, the processing unit further configured to start the first timer.
23. The apparatus of any one of claims 15 to 22, wherein the starting the first timer comprises:

    the processing unit determines that the first side data transmission failed,

    the processing unit starts the first timer.
24. The apparatus according to any one of claims 15 to 23, wherein the processing unit determining that the first side data transmission failed comprises:

    the processing unit determines that negative acknowledgement information NACK is received; or alternatively

    The processing unit determines to send negative determination information NACK to the network device; or alternatively

    The processing unit determines that first feedback information is not received, the first feedback information being associated with the first side uplink data.
25. An apparatus for wireless communication, the apparatus comprising: a processing unit and a receiving and transmitting unit,

    the processing unit is used for determining that a fourth process meets a fourth condition, and the fourth process is used for transmitting fourth sidestream data;

    the processing unit is further configured to determine that the fourth process is unoccupied;

    the fourth condition is that the processing unit determines that the fourth sidestream data transmission is completed, and a fourth timer is not running, where the fourth timer is used to indicate a minimum duration for which retransmission is expected to be received, or the first timer is used to indicate a duration for keeping awake.
26. The apparatus of claim 25, wherein the fourth condition determines that the fourth sidestream data transmission is complete for the processing unit, comprising:

    the processing unit determines that the fourth sidestream data is successfully decoded; or alternatively

    The processing unit determines that new transmission data is received, the new transmission data and the fourth side line data correspond to the same transmission information, and the transmission information is used for identifying the new transmission data.
27. The apparatus of claim 26, wherein the fourth condition determines that a fourth sidestream data transmission is complete for the processing unit, comprising:

    the processing unit determines that positive determination information ACK is received; or alternatively

    The processing unit determines to send positive determination information ACK; or alternatively

    The processing unit determines that no negative determination information NACK is received.
28. The apparatus according to any one of claims 25 to 27, wherein the fourth timer is not running, the apparatus comprising:

    the fourth timer times out; or alternatively

    The fourth timer is in a stopped state.
29. A communications apparatus comprising at least one processor coupled to a memory for storing programs or instructions;

    The at least one processor is configured to execute the program or instructions to cause the apparatus to implement the method of any one of claims 1 to 10 or to implement the method of any one of claims 11 to 14.
30. A computer readable storage medium comprising a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 14.
31. A communication system comprising the apparatus of claim 29.

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