Lateral link carrier indication method, terminal, base station and storage medium

Abstract

The invention provides a sidelink carrier indication method, a terminal, a base station and a storage medium, and the method comprises the steps that the terminal sends first sidelink carrier unavailability related information to the base station when monitoring that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available. According to the invention, the base station can timely know that the sidelink carrier wave of the terminal is unavailable, the sidelink communication sending resource which is allocated to the terminal and is on the unavailable carrier wave can be released, and the resource can be saved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a sidelink carrier indication method, a terminal, a base station and a storage medium. Background Art

[0002] In order to improve the near-field communication rate, multiple carriers can be used simultaneously when terminals perform unicast near-field communication. When multiple carriers (sidelink carriers) are used simultaneously for communication between terminals, if the terminal detects that the number of times that the sidelink HARQ (Hybrid Automatic Repeat Request) feedback is not received continuously on a certain carrier reaches the maximum value (i.e., this carrier is in an unavailable state), and the number of times that the sidelink HARQ feedback is not received continuously on other carriers does not reach the maximum value (i.e., other carriers are in an available state), since other carriers are available, the terminal will not determine that the sidelink radio link has failed, will not release the connection between the terminals, and will not report the sidelink radio link failure to the base station; in this case, the base station cannot know that a certain carrier of the multi-carrier communication between terminals is unavailable, and the base station will not be able to correctly schedule resources for the unicast near-field communication between terminals. Summary of the invention

[0003] In view of this, a technical problem to be solved by the present invention is to provide a sidelink carrier indication method, a terminal, a base station and a storage medium.

[0004] According to a first aspect of the present disclosure, a sidelink carrier indication method is provided, which is applied to a terminal, and the method comprises: when it is monitored that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, sending information related to the unavailability of the first sidelink carrier to a base station.

[0005] Optionally, a configured sidelink grant corresponding to the first sidelink carrier is deactivated or released.

[0006] Optionally, receive side link authorization deactivation indication information sent by the base station; and clear the configured side link authorization information corresponding to the first side link carrier according to the side link authorization deactivation indication information; or, receive side link carrier release indication information sent by the base station; and clear the configured side link authorization information corresponding to the first side link carrier and release the corresponding configuration according to the side link carrier release indication information.

[0007] Optionally, the receiving the sidelink authorization deactivation indication information sent by the base station includes: receiving L1 signaling sent by the base station and carrying the sidelink authorization deactivation indication information; or receiving RRC signaling sent by the base station and carrying the sidelink carrier release information.

[0008] Optionally, sending the first sidelink carrier unavailable related information to the base station includes: sending a SidelinkUEInformationNR message or MACCE carrying the first sidelink carrier unavailable related information to the base station.

[0009] Optionally, the information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

[0010] Optionally, information related to unavailability of the second sidelink carrier is sent to the peer terminal.

[0011] Optionally, sending the second side link carrier unavailability related information to the peer terminal includes: sending a second message carrying the second side link carrier unavailability related information to the peer terminal; wherein the second message includes: at least one of: PC5 RRC message, PC5-S message, and discovery message.

[0012] Optionally, the information related to the unavailability of the second sidelink carrier includes at least one of: sidelink carrier unavailability indication information, carrier information of the first sidelink carrier, and frequency information of the first sidelink carrier.

[0013] According to a second aspect of the present disclosure, a sidelink carrier indication method is provided, which is applied to a base station, and the method comprises: receiving information related to unavailability of a first sidelink carrier sent by a terminal; wherein the terminal sends information related to unavailability of the first sidelink carrier when monitoring that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available.

[0014] Optionally, sidelink authorization deactivation indication information or sidelink carrier release information is sent to the terminal; wherein, the terminal clears the configured sidelink authorization information corresponding to the first sidelink carrier according to the sidelink authorization deactivation indication information; or, the terminal clears the configured sidelink authorization information corresponding to the first sidelink carrier and releases the corresponding configuration according to the sidelink carrier release indication information.

[0015] Optionally, the sending the sidelink grant deactivation indication information to the terminal includes: sending L1 signaling carrying the sidelink grant deactivation indication information or RRC signaling carrying the sidelink carrier release information to the terminal.

[0016] Optionally, the information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

[0017] According to a third aspect of the present disclosure, a terminal is provided, comprising: a carrier status sending module, for sending information related to unavailability of a first sidelink carrier to a base station when it is monitored that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available.

[0018] Optionally, the sidelink processing module is used to deactivate or release the configured sidelink authorization corresponding to the first sidelink carrier.

[0019] Optionally, the indication information receiving module is used to receive side link authorization deactivation indication information or side link carrier release information sent by the base station; the side link processing module is used to clear the configured side link authorization information corresponding to the first side link carrier according to the side link authorization deactivation indication information; or, according to the side link carrier release indication information, clear the configured side link authorization information corresponding to the first side link carrier and release the corresponding configuration.

[0020] Optionally, the indication information receiving module is used to receive L1 signaling sent by the base station and carrying the sidelink authorization deactivation indication information, or to receive RRC signaling sent by the base station and carrying the sidelink carrier release information.

[0021] Optionally, the carrier status sending module is used to send a SidelinkUEInformationNR message or MAC CE carrying information related to the unavailability of the first sidelink carrier to the base station.

[0022] Optionally, the information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

[0023] Optionally, the carrier status sending module is used to send information related to unavailability of the second sidelink carrier to the peer terminal.

[0024] Optionally, the carrier status sending module is used to send a second message carrying information related to the unavailability of the second sidelink carrier to the peer terminal; wherein the second message includes: at least one of: a PC5 RRC message, a PC5-S message, and a discovery message.

[0025] Optionally, the information related to the unavailability of the second sidelink carrier includes at least one of: sidelink carrier unavailability indication information and frequency information of the first sidelink carrier.

[0026] According to a fourth aspect of the present disclosure, a terminal is provided, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to execute the method as described above based on instructions stored in the memory.

[0027] According to a fifth aspect of the present disclosure, a base station is provided, comprising: a carrier status receiving module, used to receive information related to unavailability of a first sidelink carrier sent by a terminal; wherein the terminal sends information related to unavailability of the first sidelink carrier when monitoring that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available.

[0028] Optionally, the indication information sending module is used to send side link authorization deactivation indication information or side link carrier release information to the terminal; wherein, the terminal clears the configured side link authorization information corresponding to the first side link carrier according to the side link authorization deactivation indication information; or, the terminal clears the configured side link authorization corresponding to the first side link carrier and releases the corresponding configuration according to the side link carrier release indication information.

[0029] Optionally, the indication information sending module is used to send L1 signaling carrying the sidelink grant deactivation indication information or RRC signaling carrying the sidelink carrier release information to the terminal.

[0030] Optionally, the information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

[0031] According to a sixth aspect of the present disclosure, a base station is provided, comprising: a memory; and a processor coupled to the memory, wherein the processor is configured to execute the method as described above based on instructions stored in the memory.

[0032] According to a seventh aspect of the present disclosure, a communication system is provided, comprising: the terminal as described above, and the base station as described above.

[0033] According to an eighth aspect of the present disclosure, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the instructions are executed by a processor as described above.

[0034] The sidelink carrier indication method, terminal, base station and storage medium disclosed in the present invention can enable the base station to promptly learn that the sidelink carrier of the terminal is unavailable, and can release the sidelink communication sending resources allocated to the terminal on the unavailable carrier. The released resources can be allocated to other terminals in need, thereby saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] By describing the embodiments of the present disclosure in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present disclosure will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the present disclosure and do not constitute a limitation of the present disclosure. The above and other purposes and advantages of the present disclosure will be further described below in conjunction with specific embodiments and with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding technical features or components will be represented by the same or corresponding figure marks.

[0036] Figure 1 It is a flowchart of an embodiment of a sidelink carrier indication method according to the present disclosure;

[0037] Figure 2 A schematic diagram of a process of clearing a sidelink authorization in an embodiment of a sidelink carrier indication method according to the present disclosure;

[0038] Figure 3 A schematic diagram of an application scenario of the sidelink carrier indication method disclosed in the present invention;

[0039] Figure 4 is a flow chart of another embodiment of a sidelink carrier indication method according to the present disclosure;

[0040] Figure 5 A schematic diagram of a process of communicating with a peer terminal in one embodiment of a sidelink carrier indication method according to the present disclosure;

[0041] Figure 6 It is a flowchart of another embodiment of the sidelink carrier indication method according to the present disclosure;

[0042] Figure 7 is a schematic diagram of modules of an embodiment of a terminal according to the present disclosure;

[0043] Figure 8 is a module diagram of another embodiment of a terminal according to the present disclosure;

[0044] Fig. 9 is a schematic diagram of modules of a base station according to an embodiment of the present disclosure;

[0045] Fig.10 A schematic diagram of modules of another embodiment of a base station according to the present disclosure. DETAILED DESCRIPTION

[0046] Exemplary embodiments of the present disclosure will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the embodiments are described in the specification. However, it should be understood that many implementation-specific settings must be made in the process of implementing the embodiments in order to achieve the specific goals of the developer, for example, to meet those restrictions related to the device and the service, and these restrictions may vary depending on the implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this disclosure.

[0047] It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

[0048] Those skilled in the art can understand that the terms "first" and "second" in the embodiments of the present disclosure are only used to distinguish different steps, devices or modules, etc., and neither represent any specific technical meaning nor indicate the necessary logical order between them.

[0049] It should also be understood that in the embodiments of the present disclosure, “plurality” may refer to two or more than two, and “at least one” may refer to one, two, or more than two.

[0050] It should also be understood that any component, data or structure mentioned in the embodiments of the present disclosure can generally be understood as one or more, unless explicitly limited or otherwise indicated in the context.

[0051] In addition, the term "and / or" in the present disclosure is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present disclosure generally indicates that the associated objects before and after are in an "or" relationship.

[0052] It should also be understood that the description of the various embodiments in the present disclosure focuses on the differences between the various embodiments, and the same or similar aspects thereof can be referenced to each other, and for the sake of brevity, they will not be described one by one.

[0053] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0054] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0055] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0056] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0057] In addition, in order to avoid obscuring the present disclosure due to unnecessary details, only the processing steps and / or device structures closely related to at least the scheme according to the present disclosure are shown in the drawings, and other details that are not closely related to the present disclosure are omitted. It should also be noted that similar reference numerals and letters in the drawings indicate similar items, and therefore once an item is defined in one drawing, it does not need to be discussed again for subsequent drawings.

[0058] Among the related technologies known to the inventors, near-field communication solves the problem of insufficient coverage of mobile communications in certain scenarios. Users can connect to other users' terminals through wifi or other wireless technologies, and connect to the Internet through the mobile communication network of other users' terminals. There are two modes of allocation of near-field communication resources for terminals: the terminal selects the required resources from the network configuration or pre-configured resource pool for communication; the base station selects near-field communication resources for the terminal, and the terminal performs near-field communication according to the scheduling of the base station. The base station can dynamically schedule or semi-statically schedule the resources used for near-field communication between terminals.

[0059] When terminals communicate with each other in unicast near-field communication, a single carrier can be used. When the number of times that the sidelink HARQ feedback is not received continuously on the carrier reaches the upper limit, the terminal determines that the sidelink radio link is unavailable, releases the RRC connection between the terminals, and reports to the base station that the sidelink radio link has failed. With the development of near-field communication technology, in order to improve the near-field communication rate, terminals can use multiple carriers simultaneously when communicating with each other in unicast near-field communication.

[0060] When multiple carriers (sidelink carriers) are used for communication between terminals at the same time, if the terminal detects that the number of times that the sidelink HARQ feedback is not received continuously on a certain carrier reaches the upper limit (that is, this carrier is in an unavailable state), and the number of times that the sidelink HARQ feedback is not received continuously on other carriers does not reach the upper limit (that is, other carriers are available), then because other carriers are available, the terminal will not determine that the sidelink radio link has failed, and will not release the connection between the terminals, nor will it report the sidelink radio link failure to the base station. In this case, the base station cannot know that a carrier of the multi-carrier communication between terminals is unavailable, and will not correctly schedule resources for the unicast near-field communication between terminals.

[0061] For example, the channel conditions of the same sidelink carrier may be different for terminals in different geographical locations. If the base station (semi-statically) schedules periodic sidelink communication resources for the terminal before a sidelink carrier becomes unavailable, and after the sidelink carrier becomes unavailable, the base station is not aware that the sidelink carrier is no longer available, then the sidelink communication resources reserved for the terminal are wasted.

[0062] Figure 1 FIG. 1 is a flow chart of an embodiment of a sidelink carrier indication method according to the present disclosure, which is applied to a terminal, such as Figure 1 As shown:

[0063] Step 101: The terminal monitors the sidelink carrier.

[0064] In one embodiment, the terminal is a sidelink multi-carrier terminal, and the terminal may be a mobile phone, a tablet computer, a vehicle networking terminal, etc. A sidelink (SL) is a communication link that communicates directly between two or more terminals, and data does not need to pass through an access network device or other devices. A sidelink carrier is a carrier configured for a sidelink according to a sidelink authorization, and a terminal and another terminal (peer terminal) may simultaneously use multiple sidelink carriers for data communication, and the terminal monitors multiple sidelink carriers.

[0065] Step 102: When it is monitored that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, the terminal sends information related to unavailability of the first sidelink carrier to the base station.

[0066] In one embodiment, the terminal may use a variety of methods to determine whether the sidelink carrier is unavailable. For example, data transmission may be performed between the terminal and the peer terminal via the first sidelink carrier and the second sidelink carrier. If, on one or more first sidelink carriers, the terminal detects that the number of times it has not received PSFCH (Physical Sidelink Feedback Channel) signaling at the PSFCH (Physical Sidelink Feedback Channel) reception timing (i.e., the number of consecutive HARQ DTX (Discontinuous Transmission)) reaches a maximum value (e.g., a maximum value of 4, 5, etc.), the terminal determines that the first sidelink carrier is unavailable, i.e., the first sidelink carrier is in an unavailable state.

[0067] If on one or more second sidelink carriers, the terminal detects that the number of times it has not received PSFCH signaling at the PSFCH reception opportunity (i.e., the number of consecutive HARQ DTXs) ​​has not reached the maximum value, then the terminal determines that the second sidelink carrier is available, that is, the second sidelink carrier is in an available state. The terminal sends a first message carrying information related to the unavailability of the first sidelink carrier to the base station, and the first message includes SidelinkUEInformationNR messages, MAC (MediaAccess Control, through the media access control layer) CE (Control Element, control unit) and other messages.

[0068] The base station can promptly learn that one or more sidelink carriers (first sidelink carriers) of the terminal are unavailable based on the information related to the unavailability of the first sidelink carrier, deactivate or release the sidelink communication transmission resources allocated to the terminal on the unavailable sidelink carrier, and after the resources are released by the terminal, the base station can allocate the resources to other terminals in need, thereby avoiding resource waste. After the resources are deactivated, they can be activated again according to demand.

[0069] The information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, frequency information of the first sidelink carrier, etc. The first sidelink carrier unavailability indication information is used to indicate that the number of consecutive HARQ DTXs on a specific sidelink carrier has reached a maximum value; the base station can determine that one or more sidelink carriers of the terminal are unavailable based on the sidelink carrier unavailability indication information.

[0070] The destination identifier corresponding to the first side link carrier refers to the destination identifier corresponding to the maximum number of consecutive HARQ DTXs, and the destination identifier can be a variety of identifiers, such as the MAC address of the peer terminal, layer 2ID, etc.; the base station can determine that one or more side link carriers corresponding to the destination identifier are unavailable based on the destination identifier corresponding to the first side link carrier.

[0071] The frequency information of the first sidelink carrier may be a frequency index of the first sidelink carrier, a carrier index, etc.; the base station may determine, based on the frequency information of the first sidelink carrier, that the sidelink carrier corresponding to the frequency information of the first sidelink carrier is unavailable.

[0072] Figure 2 FIG. 1 is a flow chart of clearing a sidelink authorization in an embodiment of a sidelink carrier indication method according to the present disclosure, as shown in FIG. Figure 2 As shown:

[0073] Step 201: The terminal receives sidelink grant deactivation indication information sent by a base station.

[0074] In one embodiment, the terminal receives a message such as a DCI (Downlink Control Information) message sent by a base station and carrying sidelink authorization deactivation indication information. The sidelink authorization deactivation indication information can be a variety of information, which is used to instruct the terminal to clear the configured sidelink authorization information corresponding to the first sidelink carrier.

[0075] The terminal may also receive the sidelink carrier release indication information sent by the base station. The base station may use RRC (Radio Resource Control, radio resource control) signaling and the like to carry the sidelink carrier release indication information.

[0076] Step 202: The terminal clears the configured sidelink grant information corresponding to the first sidelink carrier according to the sidelink grant deactivation indication information.

[0077] In one embodiment, the sidelink grant deactivation indication information may include frequency information of the first sidelink carrier and other information. The sidelink grant is used to indicate the communication resources of the first sidelink carrier, and may include communication resources such as time-frequency resources for the first sidelink carrier configured by the base station for the terminal.

[0078] The terminal deactivates the configured sidelink authorization corresponding to the first sidelink carrier according to the sidelink authorization deactivation indication information. For example, the terminal clears the authorization information (sidelink authorization information) for communication resources such as time-frequency resources, and the terminal retains the configuration information for communication resources such as time-frequency resources corresponding to the first sidelink carrier. When the sidelink authorization is activated again, the terminal generates authorization information (sidelink authorization information) for communication resources such as time-frequency resources according to the configuration information for communication resources such as time-frequency resources.

[0079] When receiving the sidelink carrier release indication information sent by the base station, the terminal releases the configured sidelink authorization corresponding to the first sidelink carrier according to the sidelink carrier release indication information. The terminal can clear the configured sidelink authorization corresponding to the first sidelink carrier and release the corresponding configuration, which is the configuration of communication resources such as time-frequency resources corresponding to the first sidelink carrier.

[0080] For example, the terminal clears the authorization information (sidelink authorization information) for communication resources such as time-frequency resources based on the sidelink carrier release indication information. At the same time, the terminal clears the configuration information of communication resources such as time-frequency resources corresponding to the first sidelink carrier, and releases the configured time-frequency resources and other communication resources corresponding to the first sidelink carrier, that is, releases the configuration corresponding to the sidelink authorization.

[0081] The terminal may deactivate and release the configured sidelink authorization corresponding to the first sidelink carrier when receiving the sidelink authorization deactivation indication information and the sidelink carrier release indication information sent by the base station; the terminal may also deactivate and release the configured sidelink authorization corresponding to the first sidelink carrier when not receiving the sidelink authorization deactivation indication information and the sidelink carrier release indication information sent by the base station. Existing deactivation and release methods may be used.

[0082] For example, after or before the terminal sends information related to the unavailability of the first sidelink carrier to the base station, the terminal deactivates the configured sidelink authorization corresponding to the first sidelink carrier without receiving sidelink authorization deactivation indication information sent by the base station.

[0083] In one embodiment, Figure 3As shown, terminal 32 and terminal 33 are sidelink multi-carrier terminals, and terminal 32 and terminal 33 (peer terminal) use two sidelink carriers for communication at the same time, and the two sidelink carriers are near-field communication carrier 1 and near-field communication carrier 2. Terminal 32 monitors near-field communication carrier 1 and near-field communication carrier 2. When terminal 32 monitors that near-field communication carrier 1 (first sidelink carrier) is unavailable and near-field communication carrier 2 (second sidelink carrier) is available, terminal 32 sends information related to the unavailability of the first sidelink carrier to base station 31.

[0084] In one embodiment, the carriers used for data transmission between the terminal and the peer terminal include a first sidelink carrier and a second sidelink carrier. The terminal sends information related to the unavailability of the second sidelink carrier to the peer terminal, so that the peer terminal determines whether to monitor the first sidelink carrier based on the information related to the unavailability of the second sidelink carrier.

[0085] The terminal sends a second message carrying information related to unavailability of the second sidelink carrier to the peer terminal, where the second message includes a PC5 (PC5 interface is a terminal-to-terminal direct communication interface) RRC message, a PC5-S message, a discovery message, etc. The information related to unavailability of the second sidelink carrier includes at least one of: sidelink carrier unavailability indication information, frequency information of the first sidelink carrier, and the like.

[0086] Figure 4 FIG. 1 is a flow chart of another embodiment of the sidelink carrier indication method according to the present disclosure, as shown in FIG. Figure 4 As shown:

[0087] Step 401, the MAC entity determines that the sidelink carrier is unavailable. For a specific destination (peer terminal), when the MAC entity of the sidelink multi-carrier terminal monitors that the number of times the MAC entity fails to receive PSFCH signaling at the PSFCH reception opportunity (i.e., the number of consecutive HARQ DTXs) ​​reaches a maximum value on a certain sidelink carrier (first sidelink carrier), the terminal (MAC entity) determines that the sidelink carrier is unavailable.

[0088] On other sidelink carriers (second sidelink carriers), when the MAC entity monitors that the number of times it has not received PSFCH signaling at the PSFCH reception opportunity (the number of consecutive HARQ DTXs) ​​has not reached the maximum value, the terminal (MAC entity) determines that other sidelink carriers are available.

[0089] Step 402, the MAC entity indicates to the upper layer of the terminal that the sidelink carrier is unavailable. The MAC entity indicates to the upper layer of the terminal that a certain sidelink carrier (the first sidelink carrier) is unavailable, that is, for this specific carrier, the number of consecutive HARQ DTXs has reached a maximum value. The upper layer of the terminal may be an RRC layer, a PC5 signaling layer, a short distance service layer, or a V2X layer, etc.

[0090] Step 403: Send information related to the unavailability of the first sidelink carrier. The terminal sends information related to the unavailability of the first sidelink carrier to the base station, and the information related to the unavailability of the first sidelink carrier includes: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

[0091] Step 404: Send deactivation indication information or sidelink carrier release indication information. The base station sends L1 signaling carrying sidelink grant deactivation indication information to the terminal, instructing the terminal to deactivate the configured sidelink grant corresponding to the unavailable sidelink carrier (the first sidelink carrier); or, the base station sends RRC signaling carrying sidelink carrier release indication information to the terminal, instructing the terminal to release the configured sidelink grant corresponding to the unavailable sidelink carrier.

[0092] Step 405: Deactivate or release the sidelink grant. The terminal deactivates or releases the configured sidelink grant corresponding to the unavailable sidelink carrier (the first sidelink carrier) according to the sidelink grant deactivation indication information, and the terminal no longer attempts to send data on the resources indicated by the sidelink grant.

[0093] The terminal sends information related to the unavailability of the second sidelink carrier to the peer terminal; if the peer terminal does not conduct near-area communication with other terminals except the terminal on this unavailable sidelink carrier (first sidelink carrier), the peer terminal no longer monitors the sidelink control information on this unavailable sidelink carrier (first sidelink carrier).

[0094] Figure 5 FIG. 1 is a flow chart of communicating with a peer terminal in one embodiment of a sidelink carrier indication method according to the present disclosure, as shown in FIG. Figure 5 As shown:

[0095] Step 501, the MAC entity determines that the sidelink carrier is unavailable. For a specific destination (peer terminal), when the MAC entity of the sidelink multi-carrier terminal monitors that the number of times the MAC entity fails to receive PSFCH signaling at the PSFCH reception timing (i.e., the number of consecutive HARQ DTXs) ​​reaches a maximum value on a certain sidelink carrier (first sidelink carrier), the terminal (MAC entity) determines that the sidelink carrier is unavailable.

[0096] On other sidelink carriers (second sidelink carriers), when the MAC entity monitors that the number of times it has not received PSFCH signaling at the PSFCH reception opportunity (the number of consecutive HARQ DTXs) ​​has not reached the maximum value, the terminal (MAC entity) determines that other sidelink carriers are available.

[0097] In step 502, the MAC entity indicates to the upper layer of the terminal that the sidelink carrier is unavailable. The MAC entity indicates to the upper layer of the terminal that a certain sidelink carrier (first sidelink carrier) is unavailable, that is, the number of consecutive HARQ DTXs for this specific carrier has reached the maximum value; the upper layer of the terminal may be an RRC layer, a PC5 signaling layer, a short-range service layer, or a V2X layer, etc. The MAC entity may also send the frequency information of this sidelink carrier (first sidelink carrier) and the related destination identifier to the upper layer of the terminal; the frequency information may be a frequency index, ARFCN (Absolute Radio Frequency Channel Number) or a carrier index, etc.

[0098] Step 503, sending information related to the unavailability of the second sidelink carrier. The terminal sends information related to the unavailability of the second sidelink carrier to the peer terminal; the information related to the unavailability of the second sidelink carrier includes: sidelink carrier unavailability indication information and frequency information of the sidelink carrier (first sidelink carrier). The terminal can send information related to the unavailability of the second sidelink carrier via a PC5 RRC message, a PC5-S message, a discovery message, or the like.

[0099] Step 504, stop monitoring the sidelink control information. If the peer terminal does not communicate with other terminals except the terminal on the unavailable sidelink carrier (the first sidelink carrier), the peer terminal no longer monitors the sidelink control information on the unavailable sidelink carrier (the first sidelink carrier).

[0100] Figure 6 FIG. 1 is a flow chart of another embodiment of the sidelink carrier indication method according to the present disclosure, as shown in FIG. Figure 6 As shown:

[0101] Step 601: A base station receives information related to unavailability of a first sidelink carrier sent by a terminal. When the terminal detects that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, the terminal sends information related to unavailability of the first sidelink carrier.

[0102] In one embodiment, the base station sends a sidelink authorization deactivation indication message or a sidelink carrier release message to the terminal. The terminal deactivates the configured sidelink authorization corresponding to the first sidelink carrier according to the sidelink authorization deactivation indication message, or the terminal releases the configured sidelink authorization corresponding to the first sidelink carrier according to the sidelink carrier release indication message.

[0103] In the sidelink carrier indication method in the above embodiment, when the terminal monitors that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, the terminal sends information related to the unavailability of the first sidelink carrier to the base station, so that the base station can promptly know that the sidelink carrier of the terminal is unavailable, and can release the sidelink communication sending resources allocated to the terminal on this unavailable carrier. The released resources can be allocated to other terminals in need, which can save resources; the peer terminal conducting near-area communication with the terminal can promptly know that the sidelink carrier is unavailable, and will no longer monitor the sidelink control information on this unavailable carrier subsequently, which can save terminal power.

[0104] In one embodiment, Figure 7 As shown, the present disclosure provides a terminal 70, including a carrier status sending module 71. When the carrier status sending module 71 monitors that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, the first sidelink carrier unavailability related information is sent to a base station.

[0105] In one embodiment, the carrier status sending module 71 sends a first message carrying information related to unavailability of the first sidelink carrier to the base station, where the first message includes: a SidelinkUEInformationNR message, a MAC CE message, and the like.

[0106] The terminal 70 includes an indication information receiving module 72 and a sidelink processing module 73. The indication information receiving module 72 receives sidelink authorization deactivation indication information or sidelink carrier release information sent by the base station; the sidelink processing module 73 deactivates the configured sidelink authorization information corresponding to the first sidelink carrier according to the sidelink authorization deactivation indication information.

[0107] In one embodiment, the indication information receiving module 72 is used to receive L1 signaling sent by the base station and carrying the sidelink grant deactivation indication information, or receive RRC signaling sent by the base station and carrying the sidelink carrier release information. The sidelink processing module 73 deactivates or releases the configured sidelink grant corresponding to the first sidelink carrier.

[0108] In one embodiment, the carrier status sending module 71 sends the second sidelink carrier unavailability related information to the peer terminal, so that the peer terminal determines whether to monitor the first sidelink carrier based on the second sidelink carrier unavailability related information.

[0109] For example, the carrier status sending module 71 sends a second message carrying information related to unavailability of the second sidelink carrier to the peer terminal, where the second message includes a PC5 RRC message, a PC5-S message, a discovery message, and the like.

[0110] In one embodiment, Figure 8 As shown, the terminal may include a memory 75, a processor 76, a communication interface 77 and a bus 78. The memory 75 is used to store instructions, the processor 76 is coupled to the memory 75, and the processor 76 is configured to execute the above-mentioned sidelink carrier indication method performed by the terminal based on the instructions stored in the memory 75.

[0111] The memory 75 may be a high-speed RAM memory, a non-volatile memory, etc., and the memory 75 may also be a memory array. The memory 75 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules. The processor 76 may be a central processing unit CPU, or an application specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the sidelink carrier indication method performed by the terminal of the present disclosure.

[0112] In one embodiment, Fig. 9 As shown, the present disclosure provides a base station 80, including: a carrier state receiving module 81, the carrier state receiving module 81 receives the first sidelink carrier unavailable related information sent by the terminal. When the terminal monitors that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, the terminal sends the first sidelink carrier unavailable related information.

[0113] The base station 80 includes an indication information sending module 82, which sends a sidelink authorization deactivation indication message or a sidelink carrier release message to the terminal. The terminal clears the configured sidelink authorization information corresponding to the first sidelink carrier according to the sidelink authorization deactivation indication message, or the terminal clears the configured sidelink authorization corresponding to the first sidelink carrier and releases the corresponding configuration according to the sidelink carrier release indication message. For example, the indication information sending module 82 sends an L1 signaling carrying the sidelink authorization deactivation indication message or an RRC signaling carrying the sidelink carrier release information to the terminal.

[0114] In one embodiment, Fig.10 As shown, the base station may include a memory 83, a processor 84, a communication interface 85 and a bus 86. The memory 83 is used to store instructions, the processor 84 is coupled to the memory 83, and the processor 84 is configured to execute the above-mentioned sidelink carrier indication method performed by the base station based on the instructions stored in the memory 83.

[0115] The memory 83 may be a high-speed RAM memory, a non-volatile memory, etc., and the memory 83 may also be a memory array. The memory 83 may also be divided into blocks, and the blocks may be combined into virtual volumes according to certain rules. The processor 84 may be a central processing unit CPU, or an application specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the sidelink carrier indication method performed by the terminal of the present disclosure.

[0116] In one embodiment, the present disclosure provides a communication system, including: a terminal as in any of the above embodiments, a base station as in any of the above embodiments. The communication system may be a 5G system, a 6G system, etc.

[0117] In one embodiment, the present disclosure provides a computer-readable storage medium storing computer instructions, which implement the method in any of the above embodiments when the instructions are executed by a processor.

[0118] Computer readable storage media can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive enumeration) of readable storage media can include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0119] The embodiments of the present disclosure may also be a computer program product, which includes computer program instructions. When the computer program instructions are executed by a processor, the processor executes the steps of the method according to various embodiments of the present disclosure described in the above “Exemplary Method” section of this specification.

[0120] The sidelink carrier indication method, terminal, base station and storage medium in the above-mentioned embodiments, when the terminal monitors that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, the terminal sends information related to the unavailability of the first sidelink carrier to the base station, so that the base station can promptly know that the sidelink carrier of the terminal is unavailable, and can release the sidelink communication sending resources allocated to the terminal on this unavailable carrier. The released resources can be allocated to other terminals in need, which can save resources; the peer terminal conducting near-area communication with the terminal can promptly know that the sidelink carrier is unavailable, and will no longer monitor the sidelink control information on this unavailable carrier subsequently, which can save terminal power and improve the user experience.

[0121] The basic principles of the present disclosure are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present disclosure are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present disclosure. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, and are not limitations. The above details do not limit the present disclosure to the necessity of adopting the above specific details to be implemented.

[0122] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0123] The block diagrams of the devices, apparatuses, equipment, and systems involved in this disclosure are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including," "comprising," "having," and the like are open words, referring to "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or," and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0124] It should also be noted that in the apparatus, device and method of the present disclosure, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present disclosure.

[0125] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0126] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, it will be appreciated by those skilled in the art that the above embodiments are merely illustrative and do not limit the scope of the present disclosure. It will be appreciated by those skilled in the art that the above embodiments may be combined, modified or replaced without departing from the scope and essence of the present disclosure.

Claims

1. A sidelink carrier indication method, applied to a terminal, the method comprising: In case that it is monitored that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, information related to unavailability of the first sidelink carrier is sent to the base station.

2. The method of claim 1, further comprising: Deactivate or release the configured sidelink grant corresponding to the first sidelink carrier.

3. The method of claim 2, further comprising: Receiving sidelink authorization deactivation indication information sent by the base station; clearing, according to the sidelink authorization deactivation indication information, the configured sidelink authorization information corresponding to the first sidelink carrier; Alternatively, receiving side link carrier release indication information sent by the base station; and according to the side link carrier release indication information, clearing the configured side link authorization information corresponding to the first side link carrier and releasing the corresponding configuration.

4. The method of claim 3, wherein: The receiving the sidelink grant deactivation indication information sent by the base station includes: receiving L1 signaling sent by the base station and carrying the sidelink grant deactivation indication information; or, Receive RRC signaling sent by the base station and carrying the sidelink carrier release information.

5. The method of claim 1, wherein: The sending of information related to unavailability of the first sidelink carrier to the base station includes: Send a SidelinkUEInformationNR message or a MAC CE carrying information related to the unavailability of the first sidelink carrier to the base station.

6. The method according to any one of claims 1 to 5, wherein: The information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

7. The method of claim 1, further comprising: The second sidelink carrier unavailability related information is sent to the peer terminal.

8. The method of claim 7, wherein: The sending of the second sidelink carrier unavailability related information to the peer terminal includes: A second message carrying information related to unavailability of the second sidelink carrier is sent to the peer terminal; wherein the second message includes at least one of a PC5 RRC message, a PC5-S message, and a discovery message.

9. The method according to claim 7 or 8, wherein: The second sidelink carrier unavailability related information includes: at least one of sidelink carrier unavailability indication information and frequency information of the first sidelink carrier.

10. A sidelink carrier indication method, applied to a base station, the method comprising: Receiving information related to unavailability of the first sidelink carrier sent by the terminal; Wherein, when the terminal monitors that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available, the terminal sends information related to unavailability of the first sidelink carrier.

11. The method of claim 10, further comprising: Sending sidelink authorization deactivation indication information or sidelink carrier release information to the terminal; The terminal clears the configured side link authorization corresponding to the first side link carrier according to the side link authorization deactivation indication information; or, the terminal clears the configured side link authorization information corresponding to the first side link carrier and releases the corresponding configuration according to the side link carrier release indication information.

12. The method of claim 11, wherein: The sending of the sidelink authorization deactivation indication information to the terminal includes: An L1 signaling carrying the sidelink grant deactivation indication information, or an RRC signaling carrying the sidelink carrier release information is sent to the terminal.

13. The method according to any one of claims 10 to 12, wherein: The information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

14. A terminal, comprising: The carrier status sending module is used to send information related to the unavailability of the first sidelink carrier to the base station when it is monitored that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available.

15. The terminal according to claim 14, further comprising: The sidelink processing module is used to deactivate or release the configured sidelink authorization corresponding to the first sidelink carrier.

16. The terminal according to claim 15, further comprising: An indication information receiving module, used to receive sidelink authorization deactivation indication information or sidelink carrier release information sent by the base station; The sidelink processing module is used to clear the configured sidelink authorization corresponding to the first sidelink carrier according to the sidelink authorization deactivation indication information; or, to clear the configured sidelink authorization information corresponding to the first sidelink carrier and release the corresponding configuration according to the sidelink carrier release indication information.

17. The terminal according to claim 16, wherein: The indication information receiving module is used to receive L1 signaling sent by the base station and carrying the sidelink authorization deactivation indication information, or to receive RRC signaling sent by the base station and carrying the sidelink carrier release information.

18. The terminal according to claim 14, wherein: The carrier status sending module is used to send a SidelinkUEInformationNR message or MAC CE carrying information related to the unavailability of the first sidelink carrier to the base station.

19. The terminal according to any one of claims 14 to 18, wherein: The information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

20. The terminal according to claim 14, wherein: The carrier status sending module is used to send the second sidelink carrier unavailability related information to the peer terminal.

21. The terminal according to claim 20, wherein: The carrier status sending module is used to send a second message carrying information related to the unavailability of the second sidelink carrier to the peer terminal; wherein the second message includes: at least one of: a PC5 RRC message, a PC5-S message, and a discovery message.

22. The terminal according to claim 20 or 21, wherein: The second sidelink carrier unavailability related information includes: at least one of sidelink carrier unavailability indication information and frequency information of the first sidelink carrier.

23. A terminal, comprising: Memory; and a processor coupled to the memory, wherein the processor is configured to execute the method according to any one of claims 1 to 9 based on instructions stored in the memory.

24. A base station, comprising: A carrier status receiving module is used to receive information related to the unavailability of a first sidelink carrier sent by a terminal; wherein the terminal sends information related to the unavailability of the first sidelink carrier when it monitors that at least one first sidelink carrier is unavailable and at least one second sidelink carrier is available.

25. The base station of claim 24, further comprising: An indication information sending module, used to send sidelink authorization deactivation indication information or sidelink carrier release information to the terminal; The terminal clears the configured side link authorization corresponding to the first side link carrier according to the side link authorization deactivation indication information; or, the terminal clears the configured side link authorization information corresponding to the first side link carrier and releases the corresponding configuration according to the side link carrier release indication information.

26. The base station according to claim 25, wherein: The indication information sending module is used to send L1 signaling carrying the sidelink grant deactivation indication information or RRC signaling carrying the sidelink carrier release information to the terminal.

27. The method according to any one of claims 24 to 26, wherein: The information related to the unavailability of the first sidelink carrier includes at least one of: sidelink carrier unavailability indication information, a destination identifier corresponding to the first sidelink carrier, and frequency information of the first sidelink carrier.

28. A base station, comprising: Memory; and a processor coupled to the memory, the processor being configured to execute the method according to any one of claims 10 to 13 based on instructions stored in the memory.

29. A communication system comprising: The terminal according to any one of claims 14 to 23, and the base station according to any one of claims 24 to 28.

30. A computer-readable storage medium storing computer instructions, wherein the instructions are executed by a processor to perform the method according to any one of claims 1 to 13.

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