CN115885575A

CN115885575A - Wireless communication method and communication device

Info

Publication number: CN115885575A
Application number: CN202080103501.6A
Authority: CN
Inventors: 杜忠达; 石聪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2023-03-31
Also published as: WO2022104542A1

Abstract

The embodiment of the application provides a wireless communication method and a communication device, wherein the method comprises the following steps: the method comprises the steps that the terminal equipment determines that channel idle detection of a first lateral link fails, and starts a first timer corresponding to the first lateral link; during the operation period of the first timer, the terminal equipment determines that the number of times of channel idle detection failure of the first lateral link is greater than or equal to a first threshold; the terminal device sends first information to a network device, wherein the first information is used for indicating that the first lateral link has a radio link failure. The reliability of the lateral link communication of the terminal equipment on the unlicensed frequency band is expected to be improved.

Description

Wireless communication method and communication device

Technical Field

The present disclosure relates to communications technologies, and in particular, to a wireless communication method and a communication apparatus.

Background

In the field of communications, user Equipment (UE) can communicate directly through a direct communication interface, namely near-field-based service communication (interface) 5, pc5, in addition to a cellular communication interface, namely a UE-UTRAN (UE-UTRAN) interface, which may also be referred to as sidelink communication. The side link communication can work in an unlicensed frequency band, before the user equipment sends signals by using the unlicensed frequency band, channel idle detection needs to be carried out, and the user equipment can send signals on an idle channel under the condition that the channel is detected to be in an idle state. If a channel is detected as busy, the user equipment is unable to send a signal on the busy channel. So as to ensure the fairness and rationality of the resource utilization of the unauthorized frequency band. However, if the ue detects that the channel is continuously busy, the ue cannot communicate normally. How to improve the reliability of the lateral link communication in the unlicensed frequency band is a hot spot of current research.

Disclosure of Invention

The embodiment of the application provides a wireless communication method, aiming at improving the reliability of lateral link communication on an unauthorized frequency band.

In a first aspect, embodiments of the present application may provide a wireless communication method, which may be performed by a terminal device or a module (e.g., a chip) configured in (or used for) the terminal device, and the method includes:

the method comprises the steps that a terminal device determines that channel idle detection of a first lateral link fails, and starts a first timer corresponding to the first lateral link;

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

the terminal equipment sends first information to network equipment, and the first information is used for indicating that the first lateral link fails in a wireless link.

In a second aspect, embodiments of the present application may provide a wireless communication method, which may be performed by a network device or a module (e.g., a chip) configured in (or used for) the network device, and the method includes:

the network equipment receives first information from the terminal equipment, wherein the first information is used for indicating that the first lateral link has a radio link failure.

And the network equipment determines that the first lateral link of the terminal equipment has radio link failure according to the first information.

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

the processing unit is used for determining that channel idle detection of a first lateral link fails and starting a first timer corresponding to the first lateral link;

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

a transceiving unit, configured to send first information to a network device, where the first information is used to indicate that a radio link failure occurs in the first sidelink.

In a fourth aspect, an embodiment of the present application may provide a wireless communication apparatus, where the wireless communication apparatus is configured in a network device or the wireless communication apparatus is a network device, and the wireless communication apparatus includes:

the receiving and sending unit is used for receiving first information from the terminal equipment, and the first information is used for indicating that the first lateral link fails in a wireless link.

And the processing unit is used for determining that the first lateral link of the terminal equipment has a radio link failure according to the first information.

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

a processor, a memory, an interface to communicate with a network device;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the communication method as provided by any one of the first aspect.

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

a processor, a memory, an interface for communicating with a terminal device;

the memory stores computer execution instructions;

the processor executes computer-executable instructions stored by the memory, causing the processor to perform the communication method as provided by any one of the second aspects.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer executing instruction is stored, and when the computer executing instruction is executed by a processor, the computer executing instruction is used to implement the communication method according to any one of the first aspect.

In an eighth aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is configured to implement the communication method according to any one of the second aspects.

In a ninth aspect, the present application provides a program, which when executed by a processor, is configured to perform the communication method according to any one of the first aspect.

In a tenth aspect, embodiments of the present application further provide a program, which when executed by a processor, is configured to perform the communication method according to any one of the second aspect.

Alternatively, the processor may be a chip.

In an eleventh aspect, the present application provides a computer program product, which includes program instructions for implementing 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, which includes program instructions for implementing the communication method according to any one of the second aspects.

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

Further, the chip further comprises a storage module (e.g., a memory) for storing instructions, the processing module is configured to execute the instructions stored by the storage module, and execution of the instructions stored in the storage module causes the processing module to perform the communication method according to any one of the first aspect.

In a fourteenth aspect, an embodiment of the present application provides a chip, including: a processing module capable of performing the communication method according to any one of the second aspect is interfaced with a communication interface.

Further, the chip further includes a storage module (e.g., a memory) for storing instructions, the processing module is for executing the instructions stored by the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute the communication method according to any one of the second aspect.

Drawings

FIG. 1 is a schematic diagram of a communication system architecture suitable for use in the present application;

fig. 2 is a schematic flow chart of a wireless communication method provided by an embodiment of the present application;

fig. 3 is another schematic flow chart of a wireless communication method provided by an embodiment of the present application;

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

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

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

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

fig. 8 is a schematic configuration diagram of an example of a terminal device of the present application;

fig. 9 is a schematic configuration diagram of an example of a network device according to the present application.

Detailed Description

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

This application is trueThe technical solution of the embodiment can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD), a fifth generation (5 th generation,5 g) mobile communication system, or a future evolution communication system, such as a sixth generation (6 th generation,5 g) mobile communication system ^th generation, 6G) mobile communication systems, and the like.

The terminal device in the embodiments of the present application may be referred to as user equipment or UE, and includes an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which are not limited in this embodiment of the present application.

By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in an internet of things (IoT) system, where IoT is an important component of future information technology development, and a main technical feature of the present application is to connect an article with a network through a communication technology, so as to implement an intelligent network with interconnected human-computer and interconnected objects.

The network device in this embodiment may be a device for communicating with a terminal device, where the network device may be an evolved node b (eNB or eNodeB) in an LTE system, and may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, and a next generation base station (nodeB or gNB) in a 5G network, for example, a next generation base station (gNB) or a network device in a PLMN network that is evolved in the future, and the embodiment of the present application is not limited.

In the 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 of a control plane and a user plane, proximity service discovery, direct communication, and the like. The PC5 interface may be used for near field direct communication or direct communication between UEs, which may be referred to as PC5 communication, PC5 interface communication, or sidelink communication for short.

In this embodiment, the Uu interface may be an interface between the UE and the access network device. The access network device may be a base station in a UMTS, an evolved node B (eNodeB) or eNB in a 4G network, a next generation base station (gnnodeb or gNB) in a 5G network, or a base station in a subsequent evolved network, without limitation. When communication is performed between two or more UEs through an access network node, the communication may be referred to as Uu communication or Uu interface communication for short.

FIG. 1 is a schematic diagram of a system architecture. As shown in fig. 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, a device, or an apparatus for implementing a network access function based on a wireless communication technology may be referred to as a RAN node, where the RAN node is mainly used to provide an interface for a UE to wirelessly access a mobile network, manage wireless resources, provide access service for the UE, and further complete forwarding of a control signal and user data between the UE and a core network, for example, the RAN node may be a base station. For example, the radio access network used in the eNB in the 4G system and the radio access network used in the 5G system are next generation radio access networks (NG-RANs), that is, the gnbs.

3. Access and mobility management function (AMF): the method is mainly used for mobility management, access management and the like.

4. Session Management Function (SMF): the method is mainly used for session management, internet Protocol (IP) address allocation and management of the UE, selecting a termination point capable of managing a user plane function, policy control, or charging function interface, notifying downlink data, configuring routing information for the user plane function, and the like.

5. Policy Control Function (PCF): the unified policy framework is used for guiding network behaviors, providing policy rule information for control plane function network elements (such as AMF and SMF network elements) and the like.

6. Unified Data Management (UDM): for handling subscriber identity, access authentication, registration, mobility management, etc.

7. User Plane Function (UPF): for packet routing and forwarding, or quality of service (QoS) handling of user plane data, etc.

8. Application Function (AF): mainly supports interacting with the core network of the third generation partnership project (3 gpp) to provide services, such as influencing data routing decisions, policy control functions, or providing some services of a third party to the network side.

9. A network capability exposure function (NEF) connects a core network element and an external application server, and provides services such as authentication and data forwarding when the external application server initiates a service request to the core network.

10. Data Network (DN): for providing a network for transmitting data, e.g. an Internet network or the like.

11. Unified Data Repository (UDR): and the system is used for providing storage and retrieval for PCF strategies, storage and retrieval of open structured data, user information storage requested by application functions and the like.

After accessing the network, the UE may communicate with the network device through the Uu interface and obtain a network service. The UE may also communicate with other UEs via a PC5 interface for side-link communications (i.e., transmit signals to or receive signals from other terminal devices via the PC5 interface). For example, the UE1 and the UE2, the UE1 and the UE4, and the UE2 and the UE3 shown in fig. 1 may perform side link communication through a PC5 interface therebetween, and the side link communication between the two UEs may operate in an unlicensed frequency band.

Communication devices using unlicensed frequency bands need to follow the Listen Before Talk (LBT) principle. That is, before the communication device transmits a signal using the unlicensed frequency band, it needs to detect (or monitor) whether a channel transmitting the signal is idle, for example, it may detect whether energy of the unlicensed frequency band corresponding to the channel exceeds a preset threshold or the like. In the event that a channel is detected as idle, the communication device may transmit a signal on the idle channel; in the event that a channel is detected as busy, the communication device may not transmit a signal on the channel. The method avoids mutual interference caused by conflict with other signal resource utilization, and can ensure fairness and rationality of resource utilization of the unauthorized frequency band.

The UE may perform sidelink communication with other UEs over an unlicensed band allocated to the UE by the network device. However, if the UE detects the channel as being busy (e.g. the UE has a side link signal to send, and the UE1 detects the channel many times to determine that the channel is busy), this will make the UE1 unable to send out the signal all the time. Possibly resulting in the UE not being able to properly conduct side link communications.

The application provides a communication method, after UE detects that a channel of a side link is in a busy state, a timer is started. And the UE records the times that the UE continuously detects that the channel of the lateral link is in the busy state during the running period of the timer, and if the times that the UE detects that the channel of the lateral link is in the busy state is greater than or equal to a first threshold value during the running period of the timer, the UE determines that the radio link failure of the lateral link occurs. And the UE informs the network equipment of the lateral link with the radio link failure through the first information. Therefore, after the network equipment learns that the radio link failure occurs to the lateral link of the UE, network planning or resource reconfiguration and the like can be performed, and the situation that the UE cannot normally perform lateral link communication on an unauthorized frequency band is reduced. And the reliability of the lateral link communication of the UE on the unlicensed frequency band is improved. In addition, the power consumption of continuously carrying out channel idle detection when the UE cannot utilize the unlicensed frequency band to carry out side link communication can be reduced.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

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

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

s210, the UE determines that the channel idle detection of the first lateral link fails, and starts a first timer corresponding to the first lateral link.

The UE may perform side link communication in an unlicensed frequency band, perform channel idle detection before the UE sends a side link signal (for example, the UE detects whether a frequency band or a resource channel carrying the side link signal is idle), and if the channel is detected to be in an idle state, it may be referred to that this time channel idle detection of the UE is successful, or it may be referred to as that LBT is successful; if the channel is detected to be busy, the channel idle detection of the UE may be referred to as failure, or may be referred to as LBT failure.

If the UE needs to send a signal of the first lateral link, the UE performs channel idle detection on a channel of an unauthorized frequency band corresponding to the first lateral link, and if the channel idle detection fails, the UE starts a first timer corresponding to the first lateral link.

For example, as shown in fig. 3, in a case that the UE needs to transmit a signal of the first sidelink, a Physical (PHY) layer (e.g., a module or a device of the physical layer) of the UE may perform channel idle detection of the first sidelink, and in a case that the PHY layer determines that the channel idle detection fails, the physical layer of the UE transmits second information to a Medium Access Control (MAC) layer (e.g., a module or a device of the MAC layer) of the UE, where the second information is used to indicate that the channel idle detection of the first sidelink fails. After receiving the second information, the MAC layer determines that the channel idle detection of the first lateral link fails according to the second information, and starts a first timer. But the application is not limited thereto. 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 links, details may include, but are not limited to, the following embodiments.

In the first embodiment, one or more sidelinks of the UE correspond to one or more carriers, and a sidelink corresponding to the first carrier is a first sidelink. Wherein 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 signals of the lateral link through carriers of 3 unlicensed frequency bands (e.g., carrier a, carrier B, and carrier C). The 3 carriers correspond to one timer respectively, that is, the 3 carriers correspond to 3 timers one by one, for example, a timer a corresponds to a carrier a, a timer B corresponds to a carrier B, and a timer C corresponds to a carrier C. Before the carrier a sends a signal of the sidelink, the UE1 performs channel idle detection on a channel of the sidelink corresponding to the carrier a, and if the channel is detected to be in a busy state, that is, the channel idle detection fails, the UE1 starts a timer corresponding to the sidelink (that is, an example of the first sidelink), that is, the UE1 starts a timer a (that is, an example of the first timer) corresponding to the carrier a (that is, an example of the first carrier) corresponding to the sidelink. For example, before the carrier a sends a signal to the UE2, the UE1 fails to perform channel idle detection on a channel of a side link of the signal to be sent on the carrier a, and if the timer a corresponding to the carrier a is not started, the UE1 starts the timer a. Or before the carrier a sends the multicast or broadcast signal, the UE1 performs channel idle detection on the lateral link on the carrier a corresponding to the signal to be sent, and if the channel idle detection fails and the timer a corresponding to the carrier a is not started, the UE1 starts the timer a. That is, as long as the UE1 fails to detect the channel idle before transmitting the sidelink signal on the carrier a and the timer a is not started, the UE1 starts the timer a corresponding to the carrier a. If the UE1 fails to perform channel idle detection on the channel of the lateral link of the signal to be sent on the carrier B before the carrier B sends the signal of the lateral link, if the timer B is not started, the UE1 starts the timer B corresponding to the carrier B. If the UE1 fails to perform channel idle detection on the channel of the lateral link of the signal to be sent on the carrier C before the carrier C sends the signal of the lateral link, if the timer C is not started, the UE1 starts the timer C corresponding to the carrier C. But the application is not limited thereto.

According to the first embodiment, the channel states on different carriers may be different, the terminal device starts corresponding timers for the different carriers, counts the number of times of channel idle detection failures during the running period of the timers, and can more accurately determine the carrier with a continuously busy channel.

In an embodiment two, one or more lateral links of the UE correspond to one or more transmission modes, and a lateral link corresponding to a first transmission mode is a first lateral link, where one transmission mode of the one or more transmission modes corresponds to a timer, and the first timer is a timer corresponding to the first transmission mode.

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

and in a broadcast mode, the UE transmits a broadcast service signal in the broadcast mode, and other UEs interested in the broadcast service signal can receive and analyze the broadcast service signal.

And 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 analyze the broadcast service signal.

And in the unicast mode, the UE sends a unicast service signal to one other UE in the unicast mode, and only the other UE can receive and analyze the unicast service signal.

For example, UE1 includes 3 transmission modes of broadcast mode, multicast mode and unicast mode. Each of the 3 transmission modes corresponds to one timer, that is, the 3 transmission modes correspond to the 3 timers one by one. For example, the broadcast mode corresponds to a timer D, the multicast mode corresponds to a timer E, and the unicast mode corresponds to a timer F. Before sending a signal of a lateral link, the UE1 performs channel idle detection on a channel of the lateral link of the signal to be sent, and if the channel is detected to be in a busy state, that is, the channel idle detection fails, the UE1 starts a timer corresponding to the lateral link. If the signal of the lateral link is a broadcast service signal and the timer D corresponding to the broadcast mode (i.e. an example of the first transmission mode) is not started, the UE1 starts the timer D corresponding to the broadcast mode (i.e. an example of the first timer); if the signal of the lateral link is a multicast service signal (i.e. an example of the first transmission mode), and the timer E corresponding to the multicast mode is not started, the UE1 starts the timer E corresponding to the multicast mode (i.e. an example of the first transmission mode); if the signal of the lateral link is a unicast service signal (i.e. an example of the first transmission mode), and the timer E corresponding to the unicast mode is not started, the UE1 starts the timer E corresponding to the unicast mode (i.e. an example of the first transmission mode). But this application is not so. It should be noted that, before UE1 sends the unicast signal to UE2, channel idle detection fails, and if the timer E is not started, UE1 starts the timer E. Before UE1 sends unicast signal to UE3, channel idle detection fails, if timer E is not started, UE1 starts timer E. That is, UE1 starts timer E whenever channel idle detection fails and timer E is not started before unicast signal transmission to any UE 1.

As another example, the UE1 includes 3 transmission modes, e.g., a broadcast mode, a multicast mode, and a unicast mode. The broadcast mode and the multicast mode correspond to one timer (e.g., timer G), and the unicast mode corresponds to one timer (e.g., timer H). Before the UE1 sends the broadcast service signal or the multicast service signal, if the UE1 fails to detect the channel vacancy of the corresponding lateral link and the timer G is not started, the UE1 starts the timer G. Before UE1 sends unicast signals, if channel idle detection fails and timer H is not started, UE1 starts timer H. But the application is not limited thereto.

According to the second embodiment, the directions of the beams for transmitting signals in different transmission modes may be different, the terminal device starts corresponding timers for different transmission modes to perform channel idle detection, counts the number of times of channel idle detection failures during the running period of the timers, and can more accurately determine the occurrence of a continuously busy transmission mode or the beam direction.

In an embodiment three, one or more lateral links of the UE correspond to one or more target addresses, and a lateral link corresponding to a first target address is a first lateral link, where one target address of the one or more 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 in a sidelink. 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, the side link of the broadcast service signal corresponds to a layer 2 target address of the broadcast service; UE1 sends a multicast service signal, the side link of the multicast service signal corresponds to the layer 2 target address of the multicast service; UE1 transmits a unicast traffic signal corresponding to the layer 2 destination address of the UE receiving the unicast traffic signal. For example, UE1 sends a unicast traffic signal to UE2, which unicast traffic signal corresponds to the layer 2 target address of UE 2. UE1 sends a unicast traffic signal to UE3, the unicast traffic signal corresponding to the layer 2 destination address of UE 3.

One timer is corresponding to each of the target addresses of one or more side link signals of UE1, that is, the one or more target addresses of UE1 are in one-to-one correspondence with one or more timers. Before UE1 sends a signal of a lateral link corresponding to a target address, UE1 performs channel idle detection on a channel of the lateral link corresponding to the target address, and if the channel idle detection fails and a timer corresponding to the target address is not started, UE1 starts the timer corresponding to the target address. But the application is not limited thereto. It should be noted that, in this example, a target address corresponding to the sidelink is taken as an example for description, and the target address corresponding to the sidelink may also be another address, which is not limited in this application.

According to the third embodiment, the directions of the adopted beams may be different when the UE sends the signals of the lateral links corresponding to different target addresses, the terminal device starts corresponding timers for different target addresses to perform channel idle detection, and counts the number of times of channel idle detection failures during the running period of the timers, so as to more accurately determine the occurrence of the continuously busy transmission mode or the beam direction.

Optionally, the three embodiments may also be implemented in combination with each other, for example, in combination with the first embodiment and the second embodiment, one timer corresponding to each transmission mode on each carrier of the UE is used, and the first timer is a timer corresponding to the first transmission mode on the first carrier. For example, before the UE1 sends the broadcast signal on the carrier a, the UE1 performs channel idle detection on the sidelink corresponding to the broadcast mode on the carrier a, and if the channel idle detection fails and the timer J corresponding to the broadcast mode on the carrier a is not started, the UE starts the timer J. Before the UE1 sends the multicast signal on the carrier a, if the UE1 fails to detect the channel idle of the lateral link corresponding to the multicast mode on the carrier a and the timer K corresponding to the multicast mode on the carrier a is not started, the UE1 starts the timer K. Before UE1 sends a multicast signal on carrier B, if UE1 fails to detect channel idle of a lateral link corresponding to a multicast mode on carrier B and a timer L corresponding to the multicast mode on carrier B is not started, UE1 starts the timer L. But the application is not limited thereto.

For another example, in the first embodiment, in combination with the third embodiment, each target address of the signal on each carrier of the UE corresponds to one timer, and the first timer is a timer corresponding to the first target address on the first carrier. For example, before UE1 sends a signal of a lateral link to UE2 on carrier a, UE1 performs channel idle detection on a channel of the lateral link corresponding to a target address of UE2 on carrier a, and if channel idle detection fails and a timer corresponding to the target address of UE2 on carrier a is not started, UE1 starts the timer. Before the UE sends a signal of a lateral link to the UE2 on the carrier B, the UE1 performs channel idle detection on a channel of the lateral link corresponding to a target address of the UE2 on the carrier B, and if the channel idle detection fails and the timer corresponding to the target address of the UE2 on the carrier B, the UE1 starts the timer. But the application is not limited thereto.

In the present application, the signals transmitted by the UE include, but are not limited to, physical channels (e.g., physical lateral link shared channel (psch), physical lateral link control channel (PSCCH), etc.) and/or reference signals (channel state information-reference signals (CSI-RS), demodulation reference signals (DMRS), etc.).

S220, during the operation of the first timer, the UE determines that the number of times of channel idle detection failure of the first sidelink is greater than or equal to a first threshold.

In S210, the UE starts a first timer after detecting that a channel of the first sidelink is idle and busy. And when the UE runs in the first timer, the UE tries to perform channel idle detection on the first lateral link again, and records the frequency of channel idle detection failure of the UE on the first lateral link during the running of the first timer. If the first timer runs overtime and the number of times of channel idle detection failure of the UE on the first lateral link during the running period of the timer is less than or equal to a first threshold value, the UE resets the first timer (namely the first timer is restored to an initial state and stops running); if the UE successfully detects the channel idleness of the first lateral link during the operation of the first timer, the UE resets the first timer; and if the UE determines that the number of times of channel idle detection failure of the first lateral link is greater than or equal to a first threshold value during the operation of the first timer, the UE determines that the radio link failure occurs on the first lateral link.

It should be noted that, during the running of the timer, when the number of times of channel idle detection failure of the UE on the first sidelink is equal to the first threshold, it may be considered that no radio link failure occurs in the specific implementation. During the running of the timer, the UE considers that the radio link fails when the number of times of channel idle detection failure of the first lateral link is greater than a first threshold. Alternatively, the number of times that the UE fails to detect the channel idle of the first sidelink during the operation of the timer is equal to the first threshold, which may also be considered as a critical condition for the occurrence of radio link failure in the specific implementation. And when the number of times of channel idle detection failure of the first side link is less than a first threshold value during the running of the timer, the UE considers that no radio link failure occurs. The method can be implemented according to specific situations, and the application is not limited to the method.

According to the scheme, the terminal equipment determines that the radio link failure occurs on the first lateral link under the condition that the frequency of the channel idle detection failure of the first lateral link is determined to be greater than or equal to a first threshold value during the operation of the first timer. And the UE does not continue to carry out channel idle detection to try to access the channel, so that unnecessary power consumption of the terminal equipment can be saved.

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

For example, the initial value of the first counter is 0, the maximum count value is a first threshold value, the first counter is incremented by 1 each time the UE fails to detect the channel idle of the first sidelink during the operation period of the first timer, and if the first counter reaches the first threshold value, that is, reaches the maximum count value, the UE determines that the radio link failure occurs on the first sidelink during the operation period of the first timer. And if the first timer is overtime, the first counter stops counting, and the UE resets the first timer and the first counter. If the UE successfully detects the idle channel of the first lateral link during the operation of the first timer, the UE resets the first timer and the first counter. But the application is not limited thereto.

For another example, the initial value of the first counter is a maximum count value (i.e., a first threshold), during the operation of the first timer, after the UE fails to detect the channel idle of the first sidelink each time, the first counter is decremented by 1, if during the operation of the first timer, the count value of the first counter is decremented to 0, the UE determines that the radio link failure occurs on the first sidelink. But the application is not limited thereto.

Specific embodiments of S220 for the first to third embodiments in S210 may further include, but are not limited to, the following embodiments.

For the first embodiment, the first timer is specifically a timer corresponding to the first carrier, and during the operation of the first timer, the number of times of channel idle detection failures of the lateral link corresponding to the first carrier (i.e., the first lateral link) by the UE is greater than or equal to a first threshold, and the UE determines that a radio link failure occurs in the lateral link corresponding to the first carrier (i.e., the first lateral link).

For example, before the UE1 sends a signal to the UE2 on the carrier a, if the UE1 fails to detect the channel idle of the carrier a corresponding to the signal to be sent, the UE1 starts the timer a corresponding to the carrier a. During the running of the timer a, UE1 detects again that the channel used for sending signals to UE2 on carrier a is still in a busy state, the number of times that UE1 records that the channel idle detection on carrier a fails is increased by 1, and optionally, UE1 controls counter a corresponding to carrier a to be increased by 1 (the initial value of counter a is 0). Or, during the operation of the timer a, before the UE1 sends a signal to the UE3 on the carrier a, the channel idle detection fails, and the number of times that the UE1 records the channel idle detection failure on the carrier a increases by 1. That is, during the operation of the timer a, no matter which UE is sent a signal on the carrier a, the UE1 is a signal of the sidelink corresponding to the carrier a, the channel idle detection of the sidelink corresponding to the carrier a fails, the number of times of the channel idle detection failure of the sidelink corresponding to the carrier a increases by 1, or the counter a increases by 1. If the number of times of idle detection failure of the channel on the carrier a is greater than or equal to the first threshold value or the counter a reaches the first threshold value during the operation of the first timer, the UE1 determines that the radio link failure occurs on the lateral link corresponding to the carrier a. If the timer a is out of time and the number of times that the UE fails to detect the channel idle of the sidelink corresponding to the carrier a during the operation 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 counts by using the counter a, the UE1 also resets the counter a). If the channel idle detection of UE1 on carrier a is successful during the operation of timer a, UE1 resets the timer a (if UE1 counts with counter a, UE1 also resets counter a). But the application is not limited thereto.

It should be noted that, during the period of the timer a corresponding to the carrier a running, if the UE1 fails to detect the channel idle of the sidelink 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, the UE1 is directed to a timer corresponding to a single carrier of different carriers, and during the operation of the timer corresponding to the one carrier, if it is detected that the channel idle detection of the sidelink corresponding to the one carrier fails again, the UE1 records the number of times of the channel idle detection failure corresponding to the one carrier, or maintains a counter corresponding to the one carrier.

For the second embodiment, the first timer is specifically a timer corresponding to the first transmission mode, and during the operation of the first timer, the number of times of channel idle detection failures of the lateral link (i.e., the first lateral link) corresponding to the first transmission mode by the UE is greater than or equal to a first threshold, and the UE determines that a radio link failure occurs in the lateral link (i.e., the first lateral link) corresponding to the first transmission mode.

For example, UE1 includes 3 transmission modes of broadcast mode, multicast mode and unicast mode. Before sending a unicast signal of a lateral link to the UE2, the UE1 performs channel idle detection, and if the channel idle detection fails, the UE1 starts a timer F corresponding to a unicast mode. During the operation of the timer F, the UE1 records the number of channel idle detection failures of the lateral link corresponding to the unicast mode. For example, UE1 detects again that the channel transmitting the signal to UE2 is still in a busy state, and UE1 records that the number of times of channel idle detection failure of the sidelink corresponding to the unicast mode is increased by 1, and optionally, UE1 controls a counter F corresponding to the unicast mode to be increased by 1 (the initial value of counter F is 0). Or, during the operation of the timer F, before the UE1 sends the unicast signal to the UE3, the channel idle detection fails, and the number of times that the UE1 records the channel idle detection failure of the lateral link corresponding to the unicast mode is increased by 1. That is to say, during the operation of the timer F, no matter which UE1 fails to perform channel idle detection before sending the unicast signal to, the number of times of channel idle detection failures of the side link corresponding to the unicast mode is recorded to be increased by 1, or the counter F corresponding to the unicast mode is controlled to be increased by 1. If the number of times of channel idle detection failure of the lateral link corresponding to the unicast mode recorded by the UE1 is greater than or equal to the first threshold value during the operation of the timer F, or the counter F reaches the first threshold value, the UE1 determines that the lateral link corresponding to the unicast mode has a radio link failure. If the timer F is overtime and the number of times that the UE fails to detect the channel idleness of the lateral link corresponding to the unicast mode during the operation 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 counts by using the counter F, the UE1 also resets the counter F). If, during the operation of the timer F, the UE1 successfully detects the channel idleness of the sidelink corresponding to the unicast mode (for example, the channel idleness is successfully detected before the UE1 sends a signal to the UE 3), the UE1 resets the timer F (if the UE1 counts by using the counter F, the UE1 also resets the counter F). But the application is not limited thereto.

It should be noted that, the UE1 maintains a timer for the broadcast mode, the multicast mode, and the unicast mode, and separately counts channel idle detection failures occurring on the sidelink corresponding to each mode (or maintains a counter for each mode). The broadcast mode and the multicast mode are similar to the unicast mode, and for brevity, are not described in detail herein.

For the third embodiment, the first timer is specifically a timer corresponding to the first target address, during the running period of the first timer, the number of times of channel idle detection failure of the lateral link corresponding to the first target address (i.e., the first lateral link) by the UE is greater than or equal to a first threshold, and the UE determines that a radio link failure occurs in the lateral link corresponding to the first target address (i.e., the first lateral link).

For example, UE1 communicates with one or more UEs on a sidelink. Before UE1 sends a unicast signal to UE2, the channel idle detection fails, and UE1 starts a timer (e.g., timer R) corresponding to the layer 2 target address of UE 2. During the running period of the timer R, the UE1 detects that a channel transmitting a side link signal to the UE2 is in a busy state, or that the UE1 fails to detect the channel idle of the side link corresponding to the layer 2 target address of the UE2, and the number of times that the UE1 records the channel idle detection failure of the side link corresponding to the layer 2 target address of the 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 period of the timer, if the UE1 determines that the number of times of channel idle detection failure of the lateral link corresponding to the layer 2 target address of the UE2 is greater than or equal to a first threshold value, or the counter R reaches the first threshold value, the UE1 determines that the layer 2 target address of the UE2 corresponds to the lateral link and radio link failure occurs. The conditions for resetting the timer R are similar to the above examples and are not described again for brevity. But the application is not limited thereto.

It should be noted that, the UE1 respectively maintains a timer for different target addresses of the signal, and separately counts channel idle detection failures occurring in the lateral links corresponding to each target address (or respectively maintains a counter for each target address). The specific embodiments corresponding to other target addresses are similar to the specific embodiments corresponding to the target address of the UE2, and are not described herein again for brevity.

For the combination of the first embodiment and the second embodiment, the first timer may be specifically a timer corresponding to a first transmission mode on the first carrier, during the operation of the first timer, the UE determines that the number of times of channel idle detection failures of a sidelink (i.e., a first sidelink) corresponding to the first transmission mode on the first carrier is greater than or equal to a first threshold, and the UE determines that a radio link failure occurs in the sidelink (i.e., the first sidelink) corresponding to the first transmission mode on the first carrier.

For the first embodiment and the third embodiment, the first timer may be specifically a timer corresponding to a first target address on the first carrier, and during the operation of the first timer, the UE determines that the number of times of channel idle detection failures of a sidelink (i.e., a first sidelink) corresponding to the first target address on the first carrier is greater than or equal to a first threshold, and the UE determines that a radio link failure occurs in the sidelink (i.e., the first sidelink) corresponding to the first target address on the first carrier.

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 sidelink.

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

Optionally, the first information includes failure occurrence reason indication information indicating a reason for occurrence of a radio link failure. In S220, if the UE determines that the first sidelink has failed due to the number of channel idle detection failures reaching the first threshold (or reaching the maximum number of failures), the failure cause value indication information is used to indicate that the channel idle detection of the first sidelink has a continuous failure, or the failure cause indication information is used to indicate that the number of channel idle detection failures reaches the first threshold (or reaching the maximum number of failures).

Alternatively, the first information may be carried in a Radio Resource Control (RRC) message sent by the UE to the network device.

By way of example and not limitation, the RRC message may be sidelink UE information (which may be written as sidelinkue information, for example) or NR sidelink UE information (which may be written as sidelinkue information, for example).

Optionally, the first information may be carried in a radio access control (MAC) Control Element (CE) transmitted by the UE to the network device.

By way of example and not limitation, the MAC CE corresponds to a Logical Channel Identity (LCID) that identifies the MAC CE carrying the first information.

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

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

For example, the first information is carried in an RRC message sidelink ue information, where the sidelink ue information includes an information element (information element), the information element is used to indicate that a radio link failure occurs in a lateral link corresponding to the first carrier, the information element is first information, and the information element includes an identifier of the first carrier or an identifier of a cell corresponding to the first carrier. Optionally, the information element includes Failure reason indication information indicating that the Failure reason is channel idle detection persistent Failure (e.g. configurable LBT Failure). But this application is not so.

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

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

For example, the UE includes 3 transmission modes of a broadcast mode, a multicast mode, and a unicast mode, and the identification of the broadcast mode, the identification of the multicast mode, and the identification of the unicast mode may be "00", "01", and "10", respectively.

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

As another example, the first information is carried in a 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 for indicating the identification of the transmission mode. Optionally, other bits in the byte may be used as a reserved bit (denoted as R) as shown in fig. 4, or other bits in the byte are used to indicate other information, for example, a failure reason may be indicated, which is not limited in this application.

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 that the first embodiment is combined with the second embodiment. For example, the UE includes the identity of serving cell a corresponding to carrier a in the first information, and the first information also indicates the identity of the broadcast mode, e.g., "00". After receiving the first information, the network device may determine that the radio link failure occurs in the broadcast mode of the serving cell a of the UE or that the radio link failure occurs in the broadcast mode on the carrier a of the UE according to the identifier of the serving cell a and the identifier of the broadcast mode indicated by the first information. But the application is not limited thereto.

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, where the 1 byte includes 3 bits for indicating an identifier of a serving cell corresponding to a carrier, and 2 bits for indicating an identifier of a transmission mode, but the application is not limited thereto.

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

Optionally, the identification of the first target address may be one or more target address numbers signaled to the UE, and the number of the target address may be used as the identification of the target address. But the application is not limited thereto.

Alternatively, the target address may be a layer 2 target address, such as a layer 2 target address for broadcast services, a layer 2 target address for multicast services, or a layer 2 target address for unicast services UEs, etc.

In an example, the first information is carried in RRC signaling, for example, the first information is an information unit SL-FailureList in the SidelinkUEinformation. The SL-FailureList includes a layer 2 destination address, which is used to indicate that a radio link failure occurs in a lateral link corresponding to the layer 2 destination address. Optionally, the SL-FailureList may further include failure cause indication information, where the failure cause indication information may be used to indicate that the source of the radio link failure of the lateral link corresponding to the layer 2 target address is that channel idle detection continues to fail. But the application is not limited thereto.

In another example, the first information is carried in a MAC CE, for example, as shown in fig. 6, the destination address is a layer 2 destination address, and the layer 2 destination address includes 24 bits. The MAC CE carrying the first information includes

bytes

1, 2, and 3,3 bytes. Byte 1 of the 3 bytes comprises 1 to 8 bits of the target address, byte 2 comprises 9 to 16 bits of the target address, and byte 3 comprises 17 to 24 bits of the target address. Optionally, the MAC CE may further include a byte 4, and the byte 4 may include a bit for indicating a failure reason. But the application is not limited thereto.

Optionally, the first information further includes an identifier of a carrier or an identifier of a serving cell corresponding to the carrier, that is, in a case that the foregoing embodiment is combined with the third embodiment. For example, UE1 includes the identity of serving cell a corresponding to carrier a in the first information, and the first information also indicates the layer 2 target address of UE 2. After receiving the first information, the network device may determine that a radio link failure occurs in a lateral link between UE1 and UE2 in the serving cell a of UE1, or determine that a radio link failure occurs in a lateral link between UE1 and UE2 on the carrier a of the UE, according to the identifier of the serving cell a and the layer 2 target address of the UE2 indicated by the first information. But the application is not limited thereto.

For example, the first information is carried in a MAC CE, the MAC CE carrying the first information includes 2 bytes for indicating that a layer 2 destination address of a radio link failure occurs, and the MAC CE further includes 1 byte including a bit for indicating an identification of a serving cell, but the application is not limited thereto.

After receiving the first information from the UE in S230, the network device may determine that a radio link failure occurs in the first lateral link according to the first information. The network equipment can perform network planning or resource reconfiguration and the like, so that the situation that the UE cannot normally perform lateral link communication on an unauthorized frequency band is reduced. For example, the network device configures relatively idle unlicensed frequency band resources for the UE, so that the UE is used for communication of a lateral link, and the like. But the application is not limited thereto.

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

According to the scheme, the UE starts the timer corresponding to the lateral link under the condition that the channel idle detection of the channel of the lateral link fails, records the number of times of idle detection failure of the channel of the lateral link during the running period of the timer, and determines that the radio link failure of the lateral link occurs if the number of times of idle detection of the channel of the lateral link is greater than or equal to the first threshold value. The terminal equipment can be prevented from continuously trying to access the unauthorized frequency band, and unnecessary power consumption of the UE is reduced. The UE may notify the network device through the first information, so that the network device can know that the radio link failure occurs in the lateral link of the UE, perform network planning or resource reconfiguration, and reduce the situation that the UE cannot perform lateral link communication normally in an unlicensed frequency band. And the reliability of the UE side link communication is improved. The sidelink may be a sidelink corresponding to one or more of a carrier, a transmission mode, and a target address, and the UE may classify the sidelink, so that the UE can more accurately determine the sidelink in which the radio link failure occurs.

The method provided by the embodiment of the present application is described in detail above with reference to fig. 2 to 6. Hereinafter, the apparatus provided in the embodiment of the present application will be described in detail with reference to fig. 7 to 9.

Fig. 7 is a schematic block diagram of a communication device provided in an embodiment of the present application. As shown in fig. 7, the communication device 700 may include a processing unit 710 and a transceiving unit 720.

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

It should be understood that the communication apparatus 700 may correspond to a terminal device in the method 200 according to an embodiment of the present application, and the communication apparatus 700 may include a unit for executing the method executed by the terminal device in the method 200 in fig. 2. Also, the units and other operations and/or functions described above in the communication apparatus 700 are respectively for implementing the corresponding flows of the method 200 in fig. 2.

It should also be understood that, when the communication apparatus 700 is a chip configured in (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 unit 710 in the communication apparatus 700 may be a processor in the chip.

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

It should be understood that the specific processes of the units for executing the corresponding steps are already described in detail in the above method embodiments, and therefore, for brevity, detailed descriptions thereof are omitted.

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 by a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 810 in the terminal device 800 shown in fig. 8, the processing unit 710 in the communication apparatus 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. 8, and the processing unit 710 in the communication apparatus 700 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 embodiment, for example, or a chip configured (or used) in the network device.

It should be understood that the communication apparatus 700 may correspond to a network device in the method 200 according to the embodiment of the present application, and the communication apparatus 700 may include a unit for performing the method performed by the network device in the method 200 in fig. 2. Also, the units and other operations and/or functions in the communication device 700 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 in (or used in) a network device, the transceiver unit in the communication apparatus 700 is an input/output interface or circuit in the chip, and the processing unit 710 in the communication apparatus 700 can be a processor in the chip.

Optionally, the communication apparatus 700 may further include a storage unit 730, which may be configured 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 is a memory that may correspond to the network device 900 shown in fig. 9.

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

Fig. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present application. The terminal device 800 can be applied to the system shown in fig. 1, and performs the functions of the terminal device in the above method embodiment. As shown, the terminal device 800 includes a processor 820 and a transceiver 810. Optionally, the terminal device 800 further comprises a memory. The processor 820, the transceiver 810 and the memory can communicate with each other via the internal connection path to transmit control and/or data signals, the memory is used for storing a computer program, and the processor 820 is used for executing the computer program in the memory to control the transceiver 810 to transmit and receive signals.

The processor 820 and the memory may be combined into a processing device, and the processor 820 is configured to execute the program codes stored in the memory to realize the functions. In particular implementations, the memory may also be integrated with the processor 820 or separate from the processor 820. The processor 820 may correspond to the processing unit in fig. 7.

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

It should be understood that terminal device 800 shown in fig. 8 is capable of implementing various processes involving the terminal device in the method 200 embodiment of fig. 2. The operations and/or functions of the modules in the terminal device 800 are respectively for implementing the corresponding flows in the above method embodiments. Reference may be made specifically to the description of the above method embodiments, and a detailed description is appropriately omitted herein to avoid redundancy.

The processor 820 may be used to perform the actions described in the previous method embodiments that are implemented internally by the terminal device, and the transceiver 810 may be used to perform the actions described in the previous method embodiments that the terminal device transmits to or receives from the network device. Please refer to the description of the previous embodiment of the method, which is not repeated herein.

Optionally, the terminal device 800 may further include a power supply for supplying power to various devices or circuits in the terminal device.

In addition, in order to improve the functions of the terminal device, the terminal device 800 may further include one or more of an input unit, a display unit, an audio circuit, a camera, a sensor, and the like, and the audio circuit may further include a speaker, a microphone, and the like.

Fig. 9 is a schematic structural diagram of a network device provided in this embodiment, where the network device 900 may be applied to the system shown in fig. 1, and executes 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 comprises a memory. The processor 920, the transceiver 910 and the memory can communicate with each other via the internal connection path to transmit control and/or data signals, the memory is used for storing a computer program, and the processor 920 is used for executing the computer program in the memory to control the transceiver 910 to transmit and receive signals.

It should be appreciated that the network device 900 shown in fig. 9 is capable of implementing the various processes involving the network device in the method 200 in fig. 2. The operations and/or functions of the modules in the network device 900 are respectively for implementing the corresponding flows in the above method embodiments. Reference may be made specifically to the description of the above method embodiments, and a detailed description is omitted here where appropriate to avoid repetition.

It should be understood that the network device 900 shown in fig. 9 is only one possible architecture of a network device and should not constitute any limitation to the present application. The method provided by the application can be applied to network equipment with other architectures. E.g. network devices containing CUs, DUs and AAUs, etc. The present application is not limited to the specific architecture of the network device.

The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform the method of any of the method embodiments described above.

It is to be understood that the processing means described above may be one or more chips. For example, the processing device may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to complete the steps of the method. To avoid repetition, it is not described in detail here.

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

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

The method provided by the embodiment of the present application, the present application further provides a computer program product, where the computer program product includes: computer program code which, when executed by one or more processors, causes an apparatus comprising the processor to perform the method in the above described embodiments.

According to the method provided by the embodiment of the present application, the present application also provides a computer-readable storage medium storing program code, which, when executed by one or more processors, causes an apparatus including the processors to perform the method in the above-described embodiment.

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

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

In the above Specific implementation of the terminal device and the network device, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor, or in a combination of the hardware and software modules in the processor.

All or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The aforementioned program may be stored in a readable memory. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disk, and any combination thereof.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

A method of wireless communication, comprising:

the method comprises the steps that the terminal equipment determines that channel idle detection of a first lateral link fails, and starts a first timer corresponding to the first lateral link;

during the operation period of the first timer, the terminal equipment determines that the number of times of channel idle detection failure of the first lateral link is greater than or equal to a first threshold;

and the terminal equipment sends first information to network equipment, wherein the first information is used for indicating that the first lateral link has a radio link failure.
The method of claim 1, wherein the channel idle detection failure comprises a channel being detected as busy.
The method according to claim 1 or 2, wherein the first information comprises failure cause indication information, and the failure cause indication information is used for indicating that the channel idle detection of the first sidelink continuously fails.
The method according to any of claims 1 to 3, wherein one or more sidelink of the terminal device corresponds to one or more carriers, wherein the sidelink corresponding to a first carrier is the first sidelink, wherein one of the one or more carriers corresponds to a timer, and wherein the first timer is the timer corresponding to the first carrier.
The method of 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 of claims 1 to 5, wherein one or more side links of the terminal device correspond to one or more transmission modes, wherein a side link corresponding to a first transmission mode is the first side link, wherein one transmission mode of the one or more transmission modes corresponds to a timer, and wherein the first timer is the timer corresponding to the first transmission mode.
The method of 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, characterized in that the first information comprises an identification of the first transmission mode.
The method according to any one of claims 1 to 8, wherein one or more side links of the terminal device correspond to one or more target addresses, the first side link is a side link corresponding to a first target address, one target address of 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 of claim 9, wherein the first information comprises the first target address or an identification of the first target address.
Method according to any of claims 1 to 10, wherein the method is specifically performed by a radio access control, MAC, layer of a terminal device.
The method of claim 11, wherein the determining, by the terminal device, that the channel idle detection of the first sidelink failed comprises:

the MAC layer of the terminal equipment receives second information sent by a physical layer of the terminal equipment, wherein the second information is used for indicating that the channel idle detection of the first lateral link fails;

and the MAC layer of the terminal equipment determines that the channel idle detection of the first lateral link fails according to the second information.
The method according to any of claims 1 to 12, wherein the first information is carried in a radio access control element, MAC CE, or in 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 sidelink has failed, the method further comprises:

the terminal equipment starts a counter corresponding to the first lateral link, wherein the counter is used for recording the number of times of channel idle detection failure of the first lateral link during the running period of the timer; and (c) a second step of,

the method for determining that the number of times of channel idle detection failure of the first lateral link is greater than or equal to a first threshold value by the terminal device includes:

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

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

the method comprises the steps that network equipment receives first information from terminal equipment, wherein the first information is used for indicating a first lateral link to generate radio link failure;

and the network equipment determines that the first lateral link of the terminal equipment has radio link failure according to the first information.
The method of claim 15, wherein the first information comprises failure cause indication information indicating that channel idle detection of the first lateral link has continuously failed.
The method according to claim 15 or 16, wherein the first information further includes an identifier of a first carrier or an identifier of a cell corresponding to the first carrier, and wherein the method further comprises:

and the network equipment determines that radio link failure occurs in the lateral link corresponding to the first carrier in one or more lateral links of the terminal equipment according to the identifier of the first carrier or the identifier of the cell corresponding to the first carrier.
The method according to any of claims 15 to 17, wherein the first information further comprises an identification of a first transmission mode, and wherein the method further comprises:

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

and the network equipment determines that the radio link failure occurs in the lateral link corresponding to the first target address in one or more lateral links of the terminal equipment according to the first target address or the identifier of the first target address.
The method according to any of claims 15 to 20, wherein the first information is carried in a radio access control element, MAC CE, or in a radio resource control, RRC, message.
A communications apparatus, comprising:

the processing unit is used for determining that the channel idle detection of a first lateral link fails and starting a first timer corresponding to the first lateral link;

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

a transceiving unit, configured to send first information to a network device, where the first information is used to indicate that a radio link failure occurs in the first sidelink.
The apparatus of claim 22, wherein the channel idle detection failure comprises a channel being detected as busy.
The apparatus according to claim 22 or 23, wherein the first information comprises failure cause indication information, and the failure cause indication information is used for indicating that channel idle detection of the first sidelink continuously fails.
The apparatus of claim 22 or 24, wherein one or more sidelink of the communication apparatus corresponds to one or more carriers, wherein a sidelink corresponding to a first carrier is the first sidelink, wherein one carrier of the one or more carriers corresponds to a timer, and wherein the first timer is the timer corresponding to the first carrier.
The apparatus of claim 25, wherein the first information further comprises an identification of the first carrier or an identification of a cell corresponding to the first carrier.
The apparatus according to any of claims 22 to 26, wherein one or more lateral links of the communication apparatus correspond to one or more transmission modes, wherein a lateral link corresponding to a first transmission mode is the first lateral link, wherein one transmission mode of the one or more transmission modes corresponds to a timer, and wherein the first timer is the timer corresponding to the first transmission mode.
The apparatus of 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 comprises an identification of the first transmission mode.
The apparatus according to any one of claims 22 to 29, wherein one or more lateral links of the communication apparatus correspond to one or more target addresses, wherein the first lateral link is a lateral link corresponding to a first target address, wherein one target address of the one or more target addresses corresponds to a timer, and wherein 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 identification of the first target address.
The apparatus according to any of claims 22 to 31, wherein the processing unit is configured to implement the functionality of a radio access control, MAC, layer.
The apparatus of claim 32,

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

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

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

wherein the maximum count value is equal to the first threshold value.
A communications apparatus, comprising:

the terminal equipment comprises a transceiving unit, a receiving unit and a sending unit, wherein the transceiving unit is used for receiving first information from the terminal equipment, and the first information is used for indicating a first lateral link to generate radio link failure;

and the processing unit is used for determining that the first lateral link of the terminal equipment has a radio link failure according to the first information.
The apparatus of claim 36, wherein the first information comprises failure cause indication information indicating that channel idle detection of the first lateral link has continuously failed.
The apparatus according to claim 36 or 37, wherein the first information further comprises an identification of a first carrier or an identification of a cell corresponding to the first carrier, and,

the processing unit is further configured to determine that, in one or more lateral links of the terminal device, a radio link failure occurs in a lateral link corresponding to the first carrier according to the identifier of the first carrier or the identifier of the cell corresponding to the first carrier.
The apparatus according to any of claims 36 to 38, wherein the first information further comprises an identification of a first transmission mode, and,

the processing unit is further configured to determine, according to the identifier of the first transmission mode, that a radio link failure occurs in a lateral link corresponding to the first transmission mode among one or more lateral links of the terminal device.
The apparatus of 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 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 determine, according to the first target address or the identifier of the first target address, that a radio link failure occurs in a lateral link corresponding to the first target address among one or more lateral links of the terminal device.
The apparatus according to any of claims 36 to 41, wherein the first information is carried in a radio Access control element, MAC CE, or in a radio resource control, RRC, message.
A terminal device, comprising:

a processor, a memory, an interface for communicating with a terminal device;

the memory stores computer execution instructions;

the processor executing computer-executable instructions stored by the memory causes the processor to perform the communication method of any of claims 1 to 14.
A network device, comprising:

a processor, a memory, an interface for communicating with a terminal device;

the memory stores computer execution instructions;

the processor executing the computer executable instructions stored by the memory causes the processor to perform the communication method of any one of claims 15 to 21.
A computer-readable storage medium comprising a computer program which, when executed by one or more processors, causes an apparatus comprising the processors to perform the method of any one of claims 1 to 21.
A computer program product, the computer program product comprising: computer program, which, when executed, causes a computer to perform the method of any one of claims 1 to 21.
A chip comprising at least one processor and a communication interface;

the communication interface is used for receiving signals input into the chip or signals output from the chip, and the processor is communicated with the communication interface and used for realizing the method according to any one of claims 1 to 21 through logic circuits or executing code instructions.