WO2022104542A1

WO2022104542A1 - Wireless communication method and communication apparatus

Info

Publication number: WO2022104542A1
Application number: PCT/CN2020/129451
Authority: WO
Inventors: 杜忠达; 石聪
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2022-05-27
Also published as: CN115885575A8; CN115885575A

Abstract

Provided are a wireless communication method and communication apparatus. The method comprises: a terminal device determining channel vacancy detection failures of a first sidelink, and starting a first timer corresponding to the first sidelink; during the operation of the first timer, the terminal device determining that the number of channel vacancy detection failures of the first sidelink is greater than or equal to a first threshold value; and the terminal device sending first information to a network device, wherein the first information is used for indicating that a wireless link failure occurs in the first sidelink. The present application is expected to improve the reliability of sidelink communication of a terminal device on an unlicensed frequency band.

Description

Wireless communication method and communication device

technical field

The embodiments of the present application relate to communication technologies, and in particular, to a wireless communication method and a communication device.

Background technique

In the field of communications, user equipment (UE) can communicate through a cellular communication interface, namely, a user equipment-Universal Mobile Telecommunications Terrestrial Access Network (UE-UTRAN, Uu) interface, as well as through a direct-connected communication interface, That is, near-field-based service communication (interface) 5 (proximity-based service communication (interface) 5, PC5) directly communicates between user equipment, which may be called sidelink communication. The side link communication can work in the unlicensed frequency band. Before the user equipment uses the unlicensed frequency band to send signals, it needs to perform channel idle detection. When the channel is detected as an idle state, the user equipment can transmit on the idle channel. Signal. If the channel is detected to be busy, the user equipment cannot transmit on the busy channel. In order to ensure the fairness and rationality of unlicensed frequency band resource utilization. However, if the user equipment detects that the channel is continuously busy, the user equipment cannot communicate normally. How to improve the reliability of side link communication in unlicensed frequency bands is a hot research topic at present.

SUMMARY OF THE INVENTION

The embodiment of the present application provides a wireless communication method, so as to improve the reliability of side link communication in an unlicensed frequency band.

In a first aspect, an embodiment of the present application may provide a wireless communication method. The method may be executed by a terminal device or executed by a module (such as a chip) configured (or used in) the terminal device, and the method includes:

The terminal device determines that the channel idle detection of the first side link fails, and starts a first timer corresponding to the first side link;

During the running of the first timer, the terminal device determines that the number of times that the channel idle detection of the first lateral link fails is greater than or equal to a first threshold;

The terminal device sends first information to the network device, where the first information is used to indicate that a radio link failure occurs on the first lateral link.

In a second aspect, the embodiments of the present application may provide a wireless communication method. The method may be executed by a network device or executed by a module (eg, a chip) configured (or used for) the network device, and the method includes:

The network device receives first information from the terminal device, where the first information is used to indicate that a radio link failure occurs on the first lateral link.

The network device determines, according to the first information, that a radio link failure occurs in the first lateral link of the terminal device.

In a third aspect, an embodiment of the present application may provide a wireless communication device, where the communication device is configured in a terminal device or the communication device is a terminal device, including:

a processing unit, configured to determine that the channel idle detection of the first lateral link fails, and start a first timer corresponding to the first lateral link;

The processing unit is further configured to determine, during the running of the first timer, that the number of times that the channel idle detection of the first lateral link fails to be detected is greater than or equal to a first threshold;

A transceiver unit, configured to send first information to a network device, where the first information is used to indicate that a radio link failure occurs on the first lateral link.

In a fourth aspect, an embodiment of the present application can provide a wireless communication device, the communication device is configured in a network device or the communication device is a network device, including:

The transceiver unit is configured to receive first information from the terminal device, where the first information is used to indicate that a radio link failure occurs on the first lateral link.

A processing unit, configured to determine, according to the first information, that a radio link failure occurs in the first lateral link of the terminal device.

In a fifth aspect, the embodiments of the present application may further provide a terminal device, including:

processors, memories, interfaces for communicating with network devices;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method as provided in any one of the first aspects.

In a sixth aspect, the embodiments of the present application may further provide a network device, including:

Processor, memory, interface for communication with terminal equipment;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method as provided in any one of the second aspects.

In a seventh aspect, embodiments of the present application provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement any of the methods described in the first aspect. A method of communication as described.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement any of the methods described in the second aspect. A method of communication as described.

In a ninth aspect, an embodiment of the present application provides a program for executing the communication method according to any one of the first aspect when the program is executed by a processor.

In a tenth aspect, an embodiment of the present application further provides a program for executing the communication method according to any one of the second aspect when the program is executed by a processor.

Optionally, the above-mentioned processor may be a chip.

In an eleventh aspect, an embodiment of the present application provides a computer program product, including program instructions, where the program instructions are used to implement the communication method according to any one of the first aspect.

In a twelfth aspect, an embodiment of the present application provides a computer program product, including program instructions, where the program instructions are used to implement the communication method described in any one of the second aspect.

In a thirteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the communication method according to any one of the first aspects.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the first step. The communication method of any one of the aspects.

In a fourteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, where the processing module can execute the communication method according to any one of the second aspects.

Further, the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to perform the second aspect The communication method of any one.

Description of drawings

1 is a schematic diagram of a communication system architecture suitable for the application;

FIG. 2 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application;

FIG. 3 is another schematic flowchart of the wireless communication method provided by an embodiment of the present application;

Fig. 4 is a schematic diagram of the first information provided by the embodiment of the present application;

Fig. 5 is another schematic diagram of the first information provided by the embodiment of the present application;

6 is another schematic diagram of the first information provided by an embodiment of the present application;

7 is a schematic block diagram of an example of a communication device of the present application;

8 is a schematic structural diagram of an example of a terminal device of the present application;

FIG. 9 is a schematic structural diagram of an example of a network device of the present application.

Detailed ways

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

The technical solutions of the embodiments of the present 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) system , TDD), fifth generation (5th generation, 5G) mobile communication system or future evolution communication system, such as sixth generation ( ^6th generation, 6G) mobile communication system and so on.

The terminal equipment in the embodiments of the present application may be referred to as user equipment, UE, and the terminal equipment includes an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, user agent, or user device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or in the future evolution of the public land mobile network (PLMN) equipment, etc., which are not limited in this embodiment of the present application.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, in the embodiments of the present application, the terminal device may also be a terminal device in an Internet of Things (IoT) system. IoT is an important part of the future development of information technology, and its main technical feature is that items pass through communication technology Connect with the network, so as to realize the intelligent network of human-machine interconnection and interconnection of things.

The network device in this embodiment of the present application may be a device for communicating with terminal devices, and the network device may be an evolved base station (evolutional nodeB, eNB or eNodeB) in an LTE system, or a cloud radio access network (cloud radio access network). network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, and a next generation node base station (gNodeB or gNB) in a 5G network, such as a next generation base station Network equipment in a gNB or a PLMN network to be evolved in the future, etc., are not limited in the embodiments of the present application.

In this embodiment of the present application, the PC5 interface may be a reference point between two UEs, and may be used to complete signaling and data transmission, proximity service discovery, direct communication, etc. on the control plane and the user plane. The PC5 interface may be used for short-range direct communication or direct connection communication between UEs, which may be referred to as PC5 communication, PC5 interface communication or side link communication for short.

In this embodiment of the present application, the Uu interface may be an interface between a UE and an access network device. Wherein, the access network equipment may be a base station in UMTS, an evolved base station (evolutional node B, eNodeB or eNB) in a 4G network, a next generation base station (next generation node base station, gNodeB or gNB) in a 5G network, or the base station in the subsequent evolution network, without limitation. When two or more UEs communicate through an access network node, the communication may be referred to as Uu communication or Uu interface communication for short.

Figure 1 is a schematic diagram of a system architecture. As shown in Figure 1, the system framework may include the following network elements:

1. Terminal equipment, such as UE1-UE4 in FIG. 1 .

2. Radio access network (RAN) node: A module, device or device that implements access network functions based on wireless communication technology can be called a RAN node. The RAN node is mainly used to provide UE wireless access to the mobile network. The interface can manage radio resources, provide access services for the UE, and then complete the forwarding of control signals and user data between the UE and the core network. For example, the RAN node can be a base station. For example, the eNB in the 4G system and the radio access network used in the 5G system are the next generation radio access network (NG-RAN), that is, gNB and so on.

3. Access and mobility management function (AMF): mainly used for mobility management and access management.

4. Session management function (SMF): mainly used for session management, UE's internet protocol (IP) address allocation and management, selection of manageable user plane functions, policy control, or charging function interfaces and downlink data notification, configure routing information for user plane functions, etc.

5. Policy control function (PCF): A unified policy framework for guiding network behavior, providing policy rule information for control plane functional network elements (such as AMF, SMF network elements, etc.).

6. Unified data management (UDM): used to handle user identification, access authentication, registration, or mobility management.

7. User plane function (UPF): used for packet routing and forwarding, or quality of service (QoS) processing of user plane data.

8. Application function (AF): mainly supports interaction with the 3rd generation partnership project (3GPP) core network to provide services, such as influencing data routing decisions, policy control functions, or providing services to the network side Provide some services of third parties.

9. Network exposure function (NEF), which connects core network elements and external application servers, and provides services such as authentication and data forwarding when external application servers initiate service requests to the core network.

10. Data network (DN): A network used to provide data transmission, such as the Internet network.

11. Unified data repository (UDR): It is used to provide storage and retrieval for PCF policies, storage and retrieval of open structured data, and user information storage for application function requests.

Wherein, after the UE accesses the network, it can communicate with the network device through the Uu interface and obtain network services. The UE can also perform side-link communication with other UEs through the PC5 interface (ie, send signals to or receive signals from other terminal devices through the PC5 interface). For example, UE1 and UE2, UE1 and UE4, and UE2 and UE3 shown in FIG. 1 can perform side link communication through the mutual PC5 interface, and the side link communication between the two UEs can work in non- Licensed frequency bands.

Communication equipment using unlicensed frequency bands needs to follow the listen before talk (LBT) principle. That is, before a communication device transmits a signal using an unlicensed frequency band, it needs to detect (or monitor) whether the channel for sending the signal is idle, for example, whether the energy of the unlicensed frequency band corresponding to the channel exceeds a preset threshold. In the case that the channel is detected to be in an idle state, the communication device may transmit a signal on the idle channel; if the channel is detected to be busy, the communication device may not transmit a signal on the channel. In order to avoid mutual interference with other signal resource utilization conflicts, it can ensure the fairness and rationality of unlicensed frequency band resource utilization.

The UE may perform side link communication with other UEs on an unlicensed frequency band allocated for the UE by the network device. However, if the UE detects that the channel is continuously busy (for example, the UE has side link signals to send, and UE1 detects the channel multiple times and determines that the channel is busy), UE1 will be unable to send the signal all the time. It may cause the UE to fail to perform side link communication normally.

The present application provides a communication method. After detecting that the channel of the side link is in a busy state, the UE starts a timer. During the running of the timer, the UE records the number of times that the UE continuously detects that the channel of the side link is in a busy state. threshold, the UE determines that the radio link failure of the side link occurs. The UE notifies the network device of the occurrence of the side link of the radio link failure through the first information. In this way, the network device can perform network planning or resource reconfiguration after learning that the side link of the UE fails in the radio link, so as to reduce the situation that the UE cannot normally perform side link communication in the unlicensed frequency band. Improves the reliability of UE side link communication in unlicensed frequency bands. In addition, it is also possible to reduce the power consumption for the UE to continuously perform channel idle detection when the unlicensed frequency band cannot be used for side link communication.

In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application. Some examples, but not all examples. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

It should be noted that the terms "first", "second", "A", "B", etc. in the description, claims and the above-mentioned drawings of the embodiments of the present application are used to distinguish similar objects, and do not necessarily Used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the application described herein, for example, can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

FIG. 2 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application. As shown in Figure 2, the method includes:

S210, the UE determines that the channel idle detection of the first side link fails, and starts a first timer corresponding to the first side link.

The UE may perform side link communication in the unlicensed frequency band, and the UE performs channel idle detection before sending the side link signal (for example, the UE detects whether the channel of the frequency band or resource carrying the side link signal is idle). If the channel is detected to be in an idle state, it can be called the UE's current channel idle detection is successful, or it can be called LBT success; if the channel is detected as a busy state, it can be called the UE's current channel idle detection failure, or it can be called LBT. fail.

If the UE needs to send the signal of the first side link, the UE performs channel idle detection on the channel of the unlicensed frequency band corresponding to the first side link. If the channel idle detection fails, the UE starts the channel corresponding to the first side link. first timer.

For example, as shown in FIG. 3 , when the UE needs to send a signal of the first side link, a physical (PHY) layer of the UE (eg, a module or device of the physical layer, etc.) can perform the first side link When the PHY layer determines that the channel idle detection fails, the physical layer of the UE sends the first message to the medium access control (MAC) layer of the UE (for example, a module or device of the MAC layer, etc.) Second information, the second information is used to indicate that the channel idle detection of the first side link fails. After receiving the second information, the MAC layer determines that the channel idle detection of the first side link fails according to the second information, and the MAC layer starts a first timer. However, the present application is not limited to this. It should be understood that S210 may also be executed by other modules, components or other protocol layers of the UE, which is not limited in this application.

Depending on the classification of the lateral link, the specific implementation may include but not be limited to the following embodiments.

In Embodiment 1, one or more side links of the UE correspond to one or more carriers, and the side link corresponding to the first carrier is the first side link. One of the one or more carriers corresponds to a timer, and the first timer is specifically a timer corresponding to the first carrier.

For example, UE1 may transmit the signal of the side link through three unlicensed frequency bands (eg, carrier A, carrier B, and carrier C). The three carriers correspond to one timer respectively, that is, the three carriers correspond to the three timers one-to-one. For example, carrier A corresponds to timer A, carrier B corresponds to timer B, and carrier C corresponds to timer C. Before UE1 sends the signal of the side link on carrier A, the UE performs channel idle detection on the channel of the side link corresponding to carrier A. If the channel is detected as being in a busy state, that is, the channel idle detection fails, UE1 starts the side link. The timer corresponding to the channel (ie, an example of the first side link), that is, UE1 starts the timer A (ie, the first carrier) corresponding to the carrier A corresponding to the side link (ie, an example of the first carrier). an example of a timer). For example, before the carrier A sends a signal to UE2, UE1 fails to perform channel idle detection on the channel of the side link of the to-be-sent signal on carrier A. If the timer A corresponding to carrier A is not started, UE1 starts the timer. A. Or, before the carrier A sends the multicast or broadcast signal, UE1 performs channel idle detection on the side link on the carrier A corresponding to the signal to be sent. If the channel idle detection fails and the timer A corresponding to the carrier A is not started, the UE1 Start the timer A. That is to say, as long as the channel idle detection fails before the UE1 transmits the signal of the side link on the carrier A, and the timer A is not started, the UE1 starts the timer A corresponding to the carrier A. If UE1 fails to perform channel idle detection on the channel of the side link of the to-be-sent signal on carrier B before sending the signal of the side link on carrier B, if timer B is not started, UE1 starts the timing corresponding to carrier B device B. If UE1 fails to perform channel idle detection on the channel of the side link of the signal to be sent on carrier C before sending the signal of the side link on carrier C, if timer C is not started, UE1 starts the timing corresponding to carrier C device C. However, the present application is not limited to this.

According to the first embodiment, the channel states on different carriers may be different, and the terminal device starts corresponding timers for different carriers, and counts the number of channel idle detection failures during the running of the timer, so as to more accurately determine that the channel is continuously busy. carrier.

Embodiment 2, one or more side links of the UE correspond to one or more transmission modes, and the side link corresponding to the first transmission mode is the first side link, wherein the one or more One transmission mode among the multiple transmission modes corresponds to a timer, and the first timer is a timer corresponding to the first transmission mode.

Optionally, the transmission mode of the UE may include but is not limited to:

In the broadcast mode, the UE sends a broadcast service signal in the broadcast mode, and other UEs interested in the broadcast service signal can receive and parse the broadcast service signal.

In the multicast mode, the UE sends a multicast service signal to a group of other UEs in the multicast mode, and the other UEs in the group can receive and parse the broadcast service signal.

In the unicast mode, the UE sends a unicast service signal to another UE in the unicast mode, and only the other UE can receive and parse the unicast service signal.

For example, UE1 includes three transmission modes: broadcast mode, multicast mode and unicast mode. Each of the three transmission modes corresponds to a timer, that is, the three transmission modes are in one-to-one correspondence with the three timers. For example, the broadcast mode corresponds to timer D, the multicast mode corresponds to timer E, and the unicast mode corresponds to timer F. Before sending the signal of the side link, UE1 performs channel idle detection on the channel of the side link to which the signal is to be sent. If the channel is detected to be in a busy state, that is, the channel idle detection fails, and UE1 starts the corresponding channel of the side link. 's timer. If the signal of the side link is a broadcast service signal, and the timer D corresponding to the broadcast mode (ie, an example of the first transmission mode) is not started, the UE1 starts the timer D corresponding to the broadcast mode (ie, the first timer An example); if the signal of the side link is a multicast service signal (that is, an example of the first transmission mode), and the timer E corresponding to the multicast mode is not started, UE1 starts the timer E corresponding to the multicast mode (that is, an example of the first transmission mode); if the signal of the side link is a unicast service signal (that is, an example of the first transmission mode), and the timer E corresponding to the unicast mode is not started, UE1 starts a unicast service signal. Timer E corresponding to the broadcast mode (that is, an example of the first transmission mode). But this application does not do so. It should be noted that, before UE1 sends a unicast signal to UE2, the channel idle detection fails, and if timer E is not started, UE1 starts the timer E. Before UE1 sends a unicast signal to UE3, the channel idle detection fails. If timer E is not started, UE1 starts the timer E. That is to say, no matter which UE the UE1 sends the unicast signal to, as long as the channel idle detection fails before sending the unicast signal and the timer E is not started, the UE1 starts the timer E.

For another example, UE1 includes 3 transmission modes, such as broadcast mode, multicast mode and unicast mode. The broadcast mode and the multicast mode correspond to a timer (eg, timer G), and the unicast mode corresponds to a timer (eg, timer H). Before the UE1 sends the broadcast service signal or the multicast service signal, if the UE1 fails to detect the channel idleness of the corresponding side link and the timer G is not started, the UE1 starts the timer G. Before the UE1 sends the unicast signal, if the channel idle detection fails and the timer H is not started, the UE1 starts the timer H. However, the present application is not limited to this.

According to the second embodiment, the directions of the beams for transmitting signals may be different in different transmission modes. The terminal device starts corresponding timers for different transmission modes to perform channel idle detection, and counts the number of channel idle detection failures during the running of the timer. More accurate determination of the presence of persistently busy transmission patterns or beam directions.

Embodiment 3, one or more lateral links of the UE correspond to one or more target addresses, and the lateral link corresponding to the first target address is the first lateral link, wherein the one or more One of the target addresses corresponds to a timer, and the first timer is a timer corresponding to the first carrier.

For example, UE1 may communicate with one or more UEs on the side link. When UE1 sends a signal of a side link, the side link corresponds to a target address. For example, UE1 sends a broadcast service signal, and the side link of the broadcast service signal corresponds to the layer 2 target address of the broadcast service. Corresponding; UE1 sends a multicast service signal, and the side link of the multicast service signal corresponds to the layer 2 target address of the multicast service; UE1 sends a unicast service signal, and the unicast service signal is related to receiving the unicast service signal. corresponds to the layer 2 target address of the UE that broadcasts the service signal. For example, UE1 sends a unicast service signal to UE2, and the unicast service signal corresponds to the layer 2 target address of UE2. UE1 sends a unicast service signal to UE3, and the unicast service signal corresponds to the layer 2 target address of UE3.

Each of the target addresses of the one or more side link signals of the UE1 corresponds to a timer, that is, the one or more target addresses of the UE1 are in one-to-one correspondence with one or more timers. Before UE1 sends a signal of the side link corresponding to the target address, UE1 performs channel idle detection on the channel of the side link corresponding to the target address. If the channel idle detection fails and the timer corresponding to the target address is not started , UE1 starts the timer corresponding to the target address. However, the present application is not limited to this. It should be noted that, in this example, the target address corresponding to the side link is a layer 2 target address for illustration, and the target address corresponding to the side link may also be other addresses, which is not limited in this application.

According to the third embodiment, the direction of the beam used by the UE to transmit the signals of the side links corresponding to different target addresses may be different. By counting the number of channel idle detection failures, the continuous busy transmission mode or beam direction can be more accurately determined.

Optionally, the above three embodiments can also be implemented in combination with each other. For example, the first embodiment is combined with the second embodiment, and there is a timer corresponding to each transmission mode on each carrier of the UE, and the first timer is the first timer. A timer corresponding to the first transmission mode on a carrier. For example, before UE1 sends a broadcast signal on carrier A, UE1 performs channel idle detection on the side link corresponding to the broadcast mode on carrier A. If the channel idle detection fails, and the timer J corresponding to the broadcast mode on carrier A fails Start, the UE starts the timer J. Before UE1 sends a multicast signal on carrier A, if UE1 fails to detect the idle channel of the side link corresponding to the multicast mode on carrier A, and the timer K corresponding to the multicast mode on carrier A is not started, UE1 starts the timer K. Before UE1 sends a multicast signal on carrier B, if UE1 fails to detect the idle channel of the side link corresponding to the multicast mode on carrier B, and the timer L corresponding to the multicast mode on carrier B is not started, UE1 The timer L is started. However, the present application is not limited to this.

For another example, Embodiment 1 is combined with Embodiment 3. Each target address of a signal on each carrier of the UE corresponds to a timer, and the first timer is a timer corresponding to the first target address on the first carrier. . For example, before UE1 sends a side link signal to UE2 on carrier A, UE1 performs channel idle detection on the channel of the side link corresponding to the target address of UE2 on carrier A. If the timer corresponding to the target address of UE2 on A is not started, UE1 starts the timer. Before the UE sends the side link signal to UE2 on carrier B, UE1 performs channel idle detection on the channel of the side link corresponding to the target address of UE2 on carrier B. The timer corresponding to the target address of UE2, UE1 starts the timer. However, the present application is not limited to this.

It should be noted that in this application, the signals sent by the UE include but are not limited to physical channels (for example, physical sidelink shared channel (PSSCH), physical sidelink control channel (physical sidelink control channel) channel, PSCCH), etc.) and/or reference signals (channel state information-reference signal (CSI-RS), demodulation reference signal (demodulation reference signal, DMRS), etc.).

S220. During the running period of the first timer, the UE determines that the number of times that the channel idle detection of the first lateral link fails is greater than or equal to a first threshold.

In S210, the UE starts a first timer after detecting that the channel of the first side link is idle and is in a busy state. During the running of the first timer, the UE attempts to perform channel idle detection on the first side link again, and records the number of times that the UE fails to detect the idle channel of the first side link during the running of the first timer. . If the running of the first timer times out and the number of times that the UE fails to detect channel idleness on the first side link during the running of the timer is less than or equal to the first threshold, the UE resets the first timer (that is, the first timer is resumed). is the initial state and stops running); if the UE successfully detects the channel idleness of the first side link during the running of the first timer, the UE resets the first timer; if during the running of the first timer, the UE determines The number of times of channel idle detection failures on the first side link is greater than or equal to the first threshold, and the UE determines that a radio link failure occurs on the first side link.

It should be noted that, during the running of the timer, when the number of times that the UE fails to detect channel idleness on the first side link is equal to the first threshold, it may be considered that no radio link failure has occurred in specific implementation. During the running of the timer, the UE considers that the radio link fails only when the number of times that the channel idle detection of the first lateral link fails is greater than the first threshold. Alternatively, during the running of the timer, the situation that the number of times that the UE fails to detect the channel idleness of the first side link equal to the first threshold may also be regarded as a critical condition for radio link failure in specific implementation. During the running of the timer, when the number of times of failure of channel idle detection on the first side link is less than the first threshold, the UE considers that no radio link failure has occurred. It may be determined according to the specific implementation situation, which is not limited in this application.

According to this solution, during the running of the first timer, the terminal device determines that a radio link failure occurs in the first lateral link when the number of times of channel idle detection failures on the first lateral link is greater than or equal to the first threshold. . However, the UE does not continue to perform channel idle detection to try to access the channel, which can save unnecessary power consumption of the terminal device.

Optionally, after detecting that the idle channel of the first side link is in a busy state, the UE further starts a first counter corresponding to the first side link, where the first counter is used to record the number of times that the channel idle detection fails.

For example, the initial value of the first counter is 0, and the maximum count value is the first threshold value. During the running of the first timer, the first counter is incremented by 1 every time the UE fails to detect the idle channel of the first lateral link. , if during the running period of the first timer, the first counter reaches the first threshold, that is, the maximum count value, the UE determines that a radio link failure occurs in the first lateral link. If the first timer times out, the first counter stops counting, and the UE resets the first timer and the first counter. If the UE successfully detects that the channel of the first side link is idle during the running of the first timer, the UE resets the first timer and the first counter. However, the present application is not limited to this.

For another example, the initial value of the first counter is the maximum count value (that is, the first threshold value). During the running of the first timer, each time the UE fails to detect the idle channel of the first side link, the first counter is decremented. 1. If the count value of the first counter decreases to 0 during the running of the first timer, the UE determines that a radio link failure occurs on the first lateral link. However, the present application is not limited to this.

For the first to third embodiments in the foregoing S210, specific implementations of S220 may also include, but are not limited to, the following implementations.

For the above-mentioned first embodiment, the first timer is specifically a timer corresponding to the first carrier. During the running of the first timer, the UE monitors the side link corresponding to the first carrier (ie the first side link). ) of the channel idle detection failure times is greater than or equal to the first threshold, and the UE determines that a radio link failure occurs on the side link (ie, the first side link) corresponding to the first carrier.

For example, before UE1 sends a signal to UE2 on carrier A, UE1 fails to detect the idle channel of carrier A corresponding to the signal to be sent, and then UE1 starts timer A corresponding to carrier A. During the running of this timer A, UE1 detects again that the channel used for sending signals to UE2 on carrier A is still in a busy state, and UE1 records the number of times that the channel idle detection fails on carrier A is increased by 1. Optionally, UE1 controls carrier A. The corresponding counter A is incremented by 1 (the initial value of the counter A is 0). Alternatively, during the running of the timer A, the UE1 fails to detect the channel idleness before the carrier A sends a signal to the UE3, and the UE1 records that the number of times of the failure of the channel idleness detection on the carrier A is increased by one. That is to say, during the operation of timer A, no matter which UE UE1 sends on carrier A, it is the signal of the side link corresponding to carrier A, and the channel idle detection of the side link corresponding to carrier A fails, The number of times of channel idle detection failures on the side link corresponding to carrier A is incremented by 1, or the counter A is incremented by 1. If during the running of the first timer, UE1 determines that the number of channel idle detection failures on carrier A is greater than or equal to the first threshold, or if counter A reaches the first threshold, UE1 determines that a radio link failure occurs on the side link corresponding to carrier A . If the timer A times out, and the number of times that the UE fails to detect the channel idleness of the side link corresponding to the carrier A during the running of the timer A is less than or equal to the first threshold (or the count value of the counter A is less than or equal to the first threshold) , the UE1 resets the timer A (if the UE1 uses the counter A for counting, the UE1 also resets the counter A). If the UE1 successfully detects that the channel is idle on the carrier A during the running of the timer A, the UE1 resets the timer A (if the UE1 uses the counter A for counting, the UE1 also resets the counter A). However, the present application is not limited to this.

It should be noted that, during the operation of the timer A corresponding to the carrier A, if the UE1 fails to detect the channel idleness of the side link corresponding to the carrier B, and the timer B corresponding to the carrier B is not started, the UE1 starts the timer B. . That is to say, UE1 has a timer corresponding to a single carrier for different carriers, and during the running period of the timer corresponding to one carrier, if it detects the failure of the channel idle detection of the side link corresponding to the carrier again, UE1 records the The number of times the channel corresponding to the carrier fails to detect the idleness, or maintain the counter corresponding to the carrier.

For the above-mentioned Embodiment 2, the first timer is specifically a timer corresponding to the first transmission mode. During the running of the first timer, the UE monitors the lateral link corresponding to the first transmission mode (that is, the first lateral link). The number of times of channel idle detection failures of the link) is greater than or equal to the first threshold, and the UE determines that a radio link failure occurs on the lateral link (ie, the first lateral link) corresponding to the first transmission mode.

For example, UE1 includes three transmission modes: broadcast mode, multicast mode and unicast mode. Before the UE1 sends the unicast signal of the side link to the UE2, the channel idle detection is performed. If the channel idle detection fails, the UE1 starts a timer F corresponding to the unicast mode. During the running period of the timer F, the UE1 records the number of times of channel idle detection failures of the side link corresponding to the unicast mode. For example, UE1 detects again that the channel sending signals to UE2 is still in a busy state, and UE1 records the number of failures in channel idle detection of the side link corresponding to the unicast mode, increasing by 1. Optionally, UE1 controls the counter F corresponding to the unicast mode. Increment 1 (the initial value of counter F is 0). Alternatively, during the running of timer F, before UE1 sends a unicast signal to UE3, the channel idle detection fails, and UE1 records that the number of channel idle detection failures of the side link corresponding to the unicast mode is increased by one. That is to say, during the running of the timer F, no matter which UE the UE1 fails to perform the channel idle detection before sending the unicast signal to which UE1, the number of channel idle detection failures of the side link corresponding to the unicast mode is recorded to increase by 1, or both The counter F corresponding to the control unicast mode is incremented by 1. If, during the running of timer F, the number of channel idle detection failures of the side link corresponding to the unicast mode recorded by UE1 is greater than or equal to the first threshold, or the counter F reaches the first threshold, UE1 determines the side link corresponding to the unicast mode. A radio link failure has occurred to the link. If the timer F times out, and the number of times that the UE fails to detect the channel idleness of the side link corresponding to the unicast mode during the running of the timer F is less than or equal to the first threshold (or the count value of the counter F is less than or equal to the first threshold) ), the UE1 resets the timer F (if the UE1 uses the counter F for counting, the UE1 also resets the counter F). If during the running of timer F, UE1 successfully detects the channel idleness of the side link corresponding to the unicast mode (for example, the channel idleness detection is successful before UE1 sends a signal to UE3), UE1 resets the timer F (if UE1 adopts the counter F counts, and UE1 also resets the counter F). However, the present application is not limited to this.

It should be noted that UE1 maintains a timer for broadcast mode, multicast mode and unicast mode, and separately counts the failure of channel idle detection on the side link corresponding to each mode (or maintains a counter for each mode). . The specific implementations of the broadcast mode and the multicast mode are similar to those of the unicast mode, and are not repeated here for brevity.

For the third embodiment above, the first timer is specifically a timer corresponding to the first target address. During the running period of the first timer, the UE records the lateral link (that is, the first lateral link) corresponding to the first target address. The number of channel idle detection failures of the link) is greater than or equal to the first threshold, and the UE determines that a radio link failure occurs on the lateral link (ie, the first lateral link) corresponding to the first target address.

For example, UE1 communicates with one or more UEs on the side link. Before UE1 sends a unicast signal to UE2, the channel idle detection fails, and UE1 starts a timer (eg, timer R) corresponding to the layer 2 target address of the UE2. During the running of the timer R, UE1 detects that the channel sending the side link signal to UE2 is in a busy state. The number of channel idle detection failures of the side link corresponding to the layer 2 target address of UE2 is increased by 1. Or, UE1 controls the counter R corresponding to the layer 2 target address of UE2 to increase by 1. During the running of the timer, if UE1 determines that the number of channel idle detection failures on the side link corresponding to the layer 2 target address of UE2 is greater than or equal to the first threshold, or the counter R reaches the first threshold, UE1 determines the layer of UE2. 2. The target address corresponds to a radio link failure on the side link. The conditions for resetting the timer R are similar to the above examples, and are not repeated for brevity. However, the present application is not limited to this.

It should be noted that UE1 maintains a timer for different target addresses of the signal, and separately counts channel idle detection failures on the side links corresponding to each target address (or maintains a counter for each target address). The specific implementation manners corresponding to other target addresses are similar to the specific implementation manners corresponding to the target address of the UE2, and are not repeated here for brevity.

For the case where the first embodiment is combined with the second embodiment, the first timer may be specifically a timer corresponding to the first transmission mode on the first carrier. During the running of the first timer, the UE determines that the first The number of channel idle detection failures of the side link corresponding to the first transmission mode (ie, the first side link) is greater than or equal to the first threshold, and the UE determines the side chain corresponding to the first transmission mode on the first carrier. A radio link failure occurs on the path (ie, the first lateral link).

For the case where the first embodiment is combined with the third embodiment, the first timer may be specifically a timer corresponding to the first target address on the first carrier. During the running of the first timer, the UE determines that the first The number of channel idle detection failures of the side link corresponding to the first target address of the first target address (ie, the first side link) is greater than or equal to the first threshold, and the UE determines the side chain corresponding to the first target address on the first carrier. A radio link failure occurs on the path (ie, the first lateral link).

S230, the UE sends first information to the network device, where the first information is used to indicate that a radio link failure occurs on the first side link.

In S220, the UE determines that during the running of the first timer, the number of times of channel idle detection failures on the first side link is greater than or equal to a first threshold, and the UE determines that a radio link failure occurs on the first side link. The UE may send the first information to notify the network device that a radio link failure occurs on the first side link.

Optionally, the first information includes failure cause indication information, where the failure cause indication information is used to indicate the cause of the radio link failure. When the UE determines in S220 that the first lateral link fails because the number of channel idle detection failures reaches the first threshold (or reaches the maximum number of failures), the failure cause value indication information is used to indicate the first lateral link The channel idle detection of the link continues to fail, or the failure cause indication information is used to indicate that the number of channel idle detection failures reaches the first threshold (or reaches the maximum number of failures).

Optionally, the first information may be carried in a radio resource control (radio resource control, RRC) message sent by the UE to the network device.

As an example and not limitation, the RRC message may be side link UE information (for example, it may be written as SidelinkUEinformation) or NR side link UE information (for example, it may be written as SidelinkUEinformationNR).

Optionally, the first information may be carried in a radio access control (media access control, MAC) control element (control element, CE) sent by the UE to the network device.

As an example and not limitation, the MAC CE corresponds to a logical channel identification (logic channel identify, LCID), and the LCID is used to identify the MAC CE that carries the first information.

For the first to third embodiments in the above S210, the S230 may include but not limited to the following embodiments.

For the first embodiment above, the first information is specifically used to indicate that a radio link failure occurs on the lateral link corresponding to the first carrier. The first information includes the identifier of the first carrier, or the first information includes the identifier of the cell corresponding to the first carrier.

For example, the first information is carried in the RRC message SidelinkUEinformation, where the SidelinkUEinformation includes an information element, the information element is used to indicate that a radio link failure occurs on the side link corresponding to the first carrier, and the information element is the first information, and the information element includes the identifier of the first carrier or the identifier of the cell corresponding to the first carrier. Optionally, the information unit includes failure cause indication information, indicating that the failure cause is continuous failure of channel idle detection (for example, it can be written as Consistent LBT Failure). But this application does not do so.

As an example and not limitation, the information element may be a side link failure list information element in SidelinkUEinformation, for example, the side link failure list information element may be written as SL-FailureList.

For the second embodiment above, the first information is specifically used to indicate that a radio link failure occurs on the lateral link corresponding to the first transmission mode. The first information includes the identifier of the first transmission mode.

For example, the UE includes three transmission modes: broadcast mode, multicast mode and unicast mode. The identifier of broadcast mode, the identifier of multicast mode and the identifier of unicast mode can be "00", "01" and "10" respectively.

In one example, the first information is carried in an RRC message. For example, SidelinkUEinformation includes an information element, the information element indicating "00" indicates that a radio link failure occurs in broadcast mode, the information element indicating "01" indicates that a radio link failure occurs in multicast mode, and the information element indicating "10" indicates that The unicast mode fails, but the present application is not limited to this.

Another example, the first information is carried in the MAC CE. For example, as shown in FIG. 4 , the MAC CE carrying the first information includes one byte, and 2 bits in the one byte are used to indicate the identification of the transmission mode. Optionally, other bits in this byte can be reserved bits (represented as R) as shown in FIG. 4 , or other bits in this byte can be used to indicate other information, for example, can indicate failure reasons, etc. The application is not limited.

Optionally, the first information further includes an identifier of a carrier, or an identifier of a serving cell corresponding to the carrier, that is, for the case where the first embodiment is combined with the second embodiment. For example, the UE includes the identifier of the serving cell A corresponding to the carrier A in the first information, and the first information also indicates the identifier of the broadcast mode, such as "00". After receiving the first information, the network device can determine that a radio link failure has occurred in the broadcast mode of the serving cell A of the UE according to the identity of the serving cell A and the identity of the broadcast mode indicated by the first information, or determine the carrier A of the UE. Radio link failure occurred in broadcast mode on . However, the present application is not limited to this.

For example, the first information is carried in a MAC CE. For example, as shown in FIG. 5 , the MAC CE carrying the first information includes 1 byte, and the 1 byte includes 3 bits used to indicate the information of the serving cell corresponding to the carrier. identifier, 2 bits are used to indicate the identifier of the transmission mode, but the present application is not limited to this.

For the third embodiment above, the first information is specifically used to indicate that a radio link failure occurs on the lateral link corresponding to the first target address. The first information includes the first target address or the identifier of the first target address.

Optionally, the identifier of the first target address may be one or more target address numbers for sending signals to the UE, and the number of the target address may be used as the identifier of the target address. However, the present application is not limited to this.

Optionally, the target address may be a layer 2 target address, such as a layer 2 target address of a broadcast service, a layer 2 target address of a multicast service, or a layer 2 target address of a UE of a unicast service, and the like.

In an example, the first information is carried in RRC signaling, for example, the first information is an information element SL-FailureList in SidelinkUEinformation. The SL-FailureList includes a layer 2 target address, which is used to indicate that a radio link failure occurs on the side link corresponding to the layer 2 target address. Optionally, the SL-FailureList may also include failure cause indication information, and the failure cause indication information may be used to indicate that the radio link failure of the side link corresponding to the layer 2 target address is originally a continuous failure of channel idle detection. . However, the present application is not limited to this.

In another example, the first information is carried in the MAC CE. For example, as shown in FIG. 6 , the target address is a layer 2 target address, and the layer 2 target address includes 24 bits. The MAC CE carrying the first information includes byte 1, byte 2 and

byte

3, 3 bytes. Byte 1 of the 3 bytes includes bits 1 to 8 of the target address, byte 2 includes bits 9 to 16 of the target address, and byte 3 includes bits 17 to 24 of the target address. Optionally, the MAC CE may also include a byte 4, and the byte 4 may include a bit for indicating the cause of the failure. However, the present application is not limited to this.

Optionally, the first information further includes an identifier of a carrier, or an identifier of a serving cell corresponding to the carrier, that is, for the case where the first embodiment is combined with the third embodiment. For example, the UE1 includes the identifier of the serving cell A corresponding to the carrier A in the first information, and the first information also indicates the layer 2 target address of the UE2. After the network device receives the first information, according to the identity of the serving cell A indicated by the first information and the layer 2 target address of the UE2, it can be determined that the side link between the UE1 and the UE2 in the serving cell A of the UE1 is wireless. The link fails, or it is determined that a radio link failure occurs in the side link between UE1 and UE2 on carrier A of the UE. However, the present application is not limited to this.

For example, the first information is carried in a MAC CE, the MAC CE carrying the first information includes 2 bytes for indicating a layer 2 target address where a radio link failure occurs, and the MAC CE further includes 1 byte, The byte includes bits used to indicate the identity of the serving cell, but the present application is not limited thereto.

After receiving the first information from the UE in S230, the network device may determine, according to the first information, that a radio link failure occurs in the first lateral link. The network device can perform network planning or resource reconfiguration, etc., to reduce the situation that the UE cannot normally perform side link communication on the unlicensed frequency band. For example, the network device configures relatively idle unlicensed frequency band resources for the UE for the UE to use for side link communication and the like. However, the present application is not limited to this.

It should be noted that, in this application, the communication between the network device and the UE may be in a licensed frequency band or an unlicensed frequency band, which is not limited in this application.

According to the above solution, when the UE fails to detect the channel idleness of the channel of the side link, it starts the timer corresponding to the side link, and records the failure of the idle detection of the side link channel during the running of the timer. If the number of times of channel idle detection of the side link is greater than or equal to the first threshold, the UE determines that a radio link failure occurs on the side link. The terminal equipment can be prevented from continuing to try to access the unlicensed frequency band, and unnecessary power consumption of the UE can be reduced. The UE can notify the network device through the first information, so that the network device can know that the side link of the UE has a radio link failure, so as to perform network planning or resource reconfiguration, etc., which can reduce the failure of the UE to perform normally in the unlicensed frequency band. The case of side link communication. Improve the reliability of UE side link communication. The side link may be a side link corresponding to one or more of a carrier, a transmission mode and a target address, and the UE may classify the side link so that the UE can more accurately determine Lateral link where radio link failure occurred.

In the above, the methods provided by the embodiments of the present application are described in detail with reference to FIG. 2 to FIG. 6 . Hereinafter, the device provided by the embodiment of the present application will be described in detail with reference to FIG. 7 to FIG. 9 .

FIG. 7 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application. As shown in FIG. 7 , the communication apparatus 700 may include a processing unit 710 and a transceiver unit 720 .

In a possible design, the communication apparatus 700 may correspond to the terminal device in the above method embodiment, that is, the UE, or a chip configured (or used) in the terminal device.

It should be understood that the communication apparatus 700 may correspond to the terminal device in the method 200 according to the embodiment of the present application, and the communication apparatus 700 may include a unit for executing the method performed by the terminal device in the method 200 in FIG. 2 . Moreover, each unit in the communication apparatus 700 and the other operations and/or functions mentioned above are respectively for realizing the corresponding flow of the method 200 in FIG. 2 .

It should also be understood that when the communication apparatus 700 is a chip configured (or used in) a terminal device, the transceiver unit 720 in the communication apparatus 700 may be an input/output interface or circuit of the chip, and the processing in the communication apparatus 700 Unit 710 may be a processor in a chip.

Optionally, the communication apparatus 700 may further include a processing unit 710, and the processing unit 710 may be configured to process instructions or data to implement corresponding operations.

Optionally, the communication device 700 may further include a storage unit 730, the storage unit 730 may be used to store instructions or data, and the processing unit 710 may execute the instructions or data stored in the storage unit, so as to enable the communication device to implement corresponding operations , the transceiver unit 720 in the communication apparatus 700 in the communication apparatus 700 may correspond to the transceiver 810 in the terminal equipment 800 shown in FIG. 8 , and the storage unit 730 may correspond to the terminal equipment 800 shown in FIG. 8 . in the memory.

It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

It should also be understood that when the communication apparatus 700 is a terminal device, the transceiver unit 720 in the communication apparatus 700 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the terminal shown in FIG. 8 . The transceiver 810 in the device 800, the processing unit 710 in the communication device 700 may be implemented by at least one processor, for example, may correspond to the processor 820 in the terminal device 800 shown in FIG. The processing unit 710 may be implemented by at least one logic circuit.

In another possible design, the communication apparatus 700 may correspond to the network device in the above method embodiments, for example, or a chip configured (or used in) the network device.

It should be understood that the communication apparatus 700 may correspond to the network device in the method 200 according to the embodiment of the present application, and the communication apparatus 700 may include a unit for executing the method performed by the network device in the method 200 in FIG. 2 . Moreover, each unit in the communication apparatus 700 and the other operations and/or functions mentioned above are respectively for realizing the corresponding flow of the method 200 in FIG. 2 .

It should also be understood that when the communication device 700 is a chip configured (or used in) a network device, the transceiver unit in the communication device 700 is an input/output interface or circuit in the chip, and the processing unit in the communication device 700 710 may be a processor in a chip.

Optionally, the communication apparatus 700 may further include a storage unit 730, which may be used to store instructions or data, and the processing unit may execute the instructions or data stored in the storage unit 730 to enable the communication apparatus to implement corresponding operations. The storage unit 730 in the communication apparatus 700 may correspond to the memory in the network device 900 shown in FIG. 9 .

It should also be understood that when the communication apparatus 700 is a network device, the transceiver unit 720 in the communication apparatus 700 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the network shown in FIG. 9 . The transceiver 910 in the device 900, the processing unit 710 in the communication device 700 may be implemented by at least one processor, for example, may correspond to the processor 920 in the network device 900 shown in FIG. The processing unit 710 may be implemented by at least one logic circuit.

FIG. 8 is a schematic structural diagram of a terminal device 800 provided by an embodiment of the present application. The terminal device 800 can be applied to the system as shown in FIG. 1 to perform the functions of the terminal device in the foregoing method embodiments. As shown, the terminal device 800 includes a processor 820 and a transceiver 810 . Optionally, the terminal device 800 further includes a memory. The processor 820, the transceiver 810 and the memory can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store computer programs, and the processor 820 is used to execute the computer in the memory. program to control the transceiver 810 to send and receive signals.

The above-mentioned processor 820 and the memory can be combined into a processing device, and the processor 820 is configured to execute the program codes stored in the memory to realize the above-mentioned functions. During specific implementation, the memory can also be integrated in the processor 820 or be independent of the processor 820 . The processor 820 may correspond to the processing unit in FIG. 7 .

The transceiver 810 described above may correspond to the transceiver unit in FIG. 7 . The transceiver 810 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used for receiving signals, and the transmitter is used for transmitting signals.

It should be understood that the terminal device 800 shown in FIG. 8 can implement various processes involving the terminal device in the embodiment of the method 200 in FIG. 2 . The operations and/or functions of each module in the terminal device 800 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

The above-mentioned processor 820 may be used to perform the actions described in the foregoing method embodiments that are implemented internally by the terminal device, and the transceiver 810 may be used to perform the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action. For details, please refer to the descriptions in the foregoing method embodiments, which will not be repeated here.

Optionally, the above-mentioned terminal device 800 may further include a power supply 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 800 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 also include a speaker, a microphone, etc. Wait.

FIG. 9 is a schematic structural diagram of a network device provided by an embodiment of the present application. The network device 900 may be applied to the system shown in FIG. 1 to perform the functions of the network device in the foregoing method embodiments. As shown, the terminal device 900 includes a processor 920 and a transceiver 910 . Optionally, the network device 900 further includes a memory. The processor 920, the transceiver 910 and the memory can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store computer programs, and the processor 920 is used to execute the computer in the memory. program to control the transceiver 910 to send and receive signals.

It should be understood that the network device 900 shown in FIG. 9 can implement various processes involving the network device in the method 200 in FIG. 2 . The operations and/or functions of each module in the network device 900 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

It should be understood that the network device 900 shown in FIG. 9 is only a possible architecture of the network device, and should not constitute any limitation to the present application. The methods provided in this application may be applicable to network devices of other architectures. For example, network equipment including CU, DU, and AAU, etc. This application does not limit the specific architecture of the network device.

An embodiment of the present application further provides a processing apparatus, including a processor and an interface, where the processor is configured to execute the method in any of the foregoing method embodiments.

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

In the implementation process, each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

It should be noted that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The aforementioned processors may be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components . The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be 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 random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

For the method provided by the embodiment of the present application, the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is executed by one or more processors, makes the device including the processor The method in the above embodiment is performed.

According to the methods provided by the embodiments of the present application, the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores program codes, and when the program codes are executed by one or more processors, the processing includes the processing The device of the controller executes the method in the above-mentioned embodiment.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the aforementioned one or more network devices. The system may further include one or more of the aforementioned terminal devices.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules may be combined or integrated into Another system, or some features can be ignored, or not implemented. On the other hand, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of modules may be in electrical, mechanical or other forms.

In the specific implementation of the above-mentioned terminal equipment and network equipment, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, referred to as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, referred to as: DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as: ASIC) and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps in combination with the method disclosed in the present application can be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

All or part of the steps for implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a readable memory. When the program is executed, the steps including the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (English: read-only memory, abbreviated as: ROM), RAM, flash memory, hard disk, Solid state drive, magnetic tape (English: magnetic tape), floppy disk (English: floppy disk), optical disc (English: optical disc) and any combination thereof.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

A wireless communication method, comprising:

The terminal device determines that the channel idle detection of the first side link fails, and starts a first timer corresponding to the first side link;

During the running of the first timer, the terminal device determines that the number of times that the channel idle detection of the first lateral link fails is greater than or equal to a first threshold;

The terminal device sends first information to the network device, where the first information is used to indicate that a radio link failure occurs on the first lateral link.
The method according to claim 1, wherein the channel idle detection failure comprises that the channel is detected as being in a busy state.
The method according to claim 1 or 2, wherein the first information includes failure cause indication information, and the failure cause indication information is used to indicate that the channel idle detection of the first side link continues to fail.
The method according to any one of claims 1 to 3, wherein one or more side links of the terminal equipment correspond to one or more carriers, and the side links corresponding to the first carrier The path is the first side link, one of the one or more carriers corresponds to a timer, and the first timer is a timer corresponding to the first carrier.
The method according to claim 4, wherein the first information further comprises an identifier of the first carrier or an identifier of a cell corresponding to the first carrier.
The method according to any one of claims 1 to 5, wherein one or more side links of the terminal device correspond to one or more transmission modes, and the one or more transmission modes corresponding to the first transmission mode The side link is the first side link, one of the one or more transmission modes corresponds to a timer, and the first timer is the timing corresponding to the first transmission mode device.
The method according to claim 6, wherein the first transmission mode comprises one or more of a broadcast transmission mode, a multicast transmission mode or a unicast transmission mode.
The method according to claim 6 or 7, wherein the first information includes an identifier of the first transmission mode.
The method according to any one of claims 1 to 8, wherein one or more lateral links of the terminal device correspond to one or more target addresses, and the first lateral link is a side link corresponding to the first target address, one target address in the one or more target addresses corresponds to a timer, and the first timer is a timer corresponding to the first target address.
The method according to claim 9, wherein the first information comprises the first target address or an identifier of the first target address.
The method according to any one of claims 1 to 10, wherein the method is specifically executed by a radio access control MAC layer of the terminal device.
The method according to claim 11, wherein the terminal device determining that the channel idle detection of the first side link fails, comprising:

The MAC layer of the terminal device receives second information sent by the physical layer of the terminal device, where the second information is used to indicate that the channel idle detection of the first side link fails;

The MAC layer of the terminal device determines that the channel idle detection of the first side link has failed according to the second information.
The method according to any one of claims 1 to 12, wherein the first information is carried in a radio access control control element MAC CE or a radio resource control RRC message.
The method according to any one of claims 1 to 13, wherein after the terminal device determines that the channel idle detection of the first side link fails, the method further comprises:

The terminal device starts a counter corresponding to the first lateral link, where the counter is used to record the number of times that the channel idle detection of the first lateral link fails during the running of the timer; and,

The terminal device determines that the number of times that the channel idle detection of the first lateral link fails is greater than or equal to a first threshold, including:

The terminal device determines that the counter reaches the maximum count value of the counter,

Wherein, the maximum count value is equal to the first threshold.
A wireless communication method, comprising:

The network device receives first information from the terminal device, where the first information is used to indicate that a radio link failure occurs on the first lateral link;

The network device determines, according to the first information, that a radio link failure occurs in the first lateral link of the terminal device.
The method according to claim 15, wherein the first information includes failure cause indication information, and the failure cause indication information is used to indicate that the channel idle detection of the first side link continues to fail.
The method according to claim 15 or 16, wherein the first information further comprises an identifier of a first carrier or an identifier of a cell corresponding to the first carrier, and the method further comprises:

The network device determines, according to the identifier of the first carrier or the identifier of the cell corresponding to the first carrier, the side corresponding to the first carrier in one or more side links of the terminal device. A radio link failure has occurred to the link.
The method according to any one of claims 15 to 17, wherein the first information further includes an identifier of the first transmission mode, and the method further includes:

The network device determines, according to the identifier of the first transmission mode, that in one or more lateral links of the terminal device, a radio link failure occurs in the lateral links corresponding to the first transmission mode.
The method according to claim 18, wherein the first transmission mode comprises one or more of a broadcast transmission mode, a multicast transmission mode or a unicast transmission mode.
The method according to any one of claims 15 to 19, wherein the first information comprises a first target address or an identification of the first target address, and the method further comprises:

The network device determines, according to the first target address or the identifier of the first target address, among one or more side links of the terminal device, a side link corresponding to the first target address A wireless link failure has occurred on the road.
The method according to any one of claims 15 to 20, wherein the first information is carried in a radio access control control element MAC CE or a radio resource control RRC message.
A communication device, characterized in that it includes:

a processing unit, configured to determine that the channel idle detection of the first lateral link fails, and start a first timer corresponding to the first lateral link;

The processing unit is further configured to determine, during the running of the first timer, that the number of times that the channel idle detection of the first lateral link fails to be detected is greater than or equal to a first threshold;

A transceiver unit, configured to send first information to a network device, where the first information is used to indicate that a radio link failure occurs on the first lateral link.
The apparatus according to claim 22, wherein the failure of the channel idle detection comprises that the channel is detected as being in a busy state.
The apparatus according to claim 22 or 23, wherein the first information includes failure cause indication information, and the failure cause indication information is used to indicate that the channel idle detection of the first side link continues to fail.
The device according to claim 22 or 24, wherein one or more side links of the communication device correspond to one or more carriers, and the side link corresponding to the first carrier is the For the first side link, one of the one or more carriers corresponds to a timer, and the first timer is a timer corresponding to the first carrier.
The apparatus according to claim 25, wherein the first information further comprises an identifier of the first carrier or an identifier of a cell corresponding to the first carrier.
The device according to any one of claims 22 to 26, wherein one or more side links of the communication device correspond to one or more transmission modes, and the one or more transmission modes corresponding to the first transmission mode The side link is the first side link, one of the one or more transmission modes corresponds to a timer, and the first timer is the timing corresponding to the first transmission mode device.
The apparatus according to claim 27, wherein the first transmission mode comprises one or more of a broadcast transmission mode, a multicast transmission mode or a unicast transmission mode.
The apparatus according to claim 27 or 28, wherein the first information includes an identifier of the first transmission mode.
The device according to any one of claims 22 to 29, wherein one or more lateral links of the communication device correspond to one or more target addresses, and the first lateral link is a side link corresponding to the first target address, one target address in the one or more target addresses corresponds to a timer, and the first timer is a timer corresponding to the first target address.
The apparatus of claim 30, wherein the first information comprises the first target address or an identifier of the first target address.
The apparatus according to any one of claims 22 to 31, wherein the processing unit is specifically configured to implement a function of a radio access control MAC layer.
The apparatus of claim 32, wherein

The processing unit is further configured to receive second information sent from the physical layer of the communication device, where the second information is used to indicate that the channel idle detection of the first side link fails;

The processing unit is specifically configured to determine, according to the second information, that the channel idle detection of the first side link fails.
The apparatus according to any one of claims 22 to 33, wherein the first information is carried in a radio access control control element MAC CE or a radio resource control RRC message.
The apparatus according to any one of claims 22 to 34, wherein after the processing unit determines that the channel idle detection of the first lateral link fails, the processing unit is further configured to start the first side link a counter corresponding to the side link, where the counter is used to record the number of times that the channel idle detection of the first side link fails during the running of the timer; and,

The processing unit is specifically configured to determine that the counter reaches the maximum count value of the counter,

Wherein, the maximum count value is equal to the first threshold.
A communication device, characterized in that it includes:

a transceiver unit, configured to receive first information from the terminal device, where the first information is used to indicate that a radio link failure occurs on the first lateral link;

A processing unit, configured to determine, according to the first information, that a radio link failure occurs in the first lateral link of the terminal device.
The apparatus according to claim 36, wherein the first information includes failure cause indication information, and the failure cause indication information is used to indicate that the channel idle detection of the first side link continues to fail.
The apparatus according to claim 36 or 37, wherein the first information further comprises an identifier of a first carrier or an identifier of a cell corresponding to the first carrier, and,

The processing unit is further configured to determine, according to the identifier of the first carrier or the identifier of the cell corresponding to the first carrier, the one or more side links of the terminal device, which are related to the first carrier. A radio link failure occurs on the corresponding side link.
The apparatus according to any one of claims 36 to 38, wherein the first information further includes an identification of the first transmission mode, and,

The processing unit is further configured to determine, according to the identifier of the first transmission mode, in one or more lateral links of the terminal device, a wireless link occurs in the lateral link corresponding to the first transmission mode fail.
The apparatus according to claim 39, wherein the first transmission mode comprises one or more of a broadcast transmission mode, a multicast transmission mode or a unicast transmission mode.
The apparatus according to any one of claims 36 to 40, wherein the first information comprises a first target address or an identification of the first target address, and,

The processing unit is further configured to, according to the first target address or the identifier of the first target address, determine, in one or more lateral links of the terminal device, the one corresponding to the first target address. A radio link failure occurred on the side link.
The apparatus according to any one of claims 36 to 41, wherein the first information is carried in a radio access control control element MAC CE or a radio resource control RRC message.
A terminal device, characterized in that it includes:

Processor, memory, interface for communication with terminal equipment;

the memory stores computer-executable instructions;

The processor executes computer-implemented instructions stored in the memory, causing the processor to perform the communication method of any one of claims 1 to 14.
A network device, characterized in that it includes:

Processor, memory, interface for communication with terminal equipment;

the memory stores computer-executable instructions;

The processor executes computer-implemented instructions stored in the memory, causing the processor to perform the communication method of any one of claims 15-21.
A computer-readable storage medium, characterized by comprising a computer program that, when executed by one or more processors, causes an apparatus comprising the processors to perform the method described in any one of claims 1 to 21 method.
A computer program product, characterized in that the computer program product comprises: a computer program, which, when the computer program is executed, causes a computer to execute the method according to any one of claims 1 to 21 .
A chip, characterized in that it includes at least one processor and a communication interface;

The communication interface is used to receive signals input to the chip or signals output from the chip, and the processor communicates with the communication interface and executes code instructions for implementing as in claims 1 to 21 by means of logic circuits or executing code instructions. The method of any one.