METHOD AND APPARATUS FOR DETERMINING SIDELINK DISCONTINUOUS RECEPTION SETTING

Abstract

[Solution] A method and an apparatus for determining a sidelink discontinuous reception setting, applicable to systems such as Internet of Vehicles, V2X, and V2V, includes determining a sidelink discontinuous reception (SL DRX) setting method in response to a received serving cell message. By determining which SL DRX setting method to use based on the serving cell message, sidelink communication between user equipments can be guaranteed, and device power consumption can be saved and resource waste can be avoided when the user equipment performs sidelink communication.

Description

[Technical Field]

[0001] The present application relates to the field of communication technologies, and in particular to a method and apparatus for determining a sidelink discontinuous reception configuration. [Background technology]

[0002] In the related art, communication between user equipments can be performed via a sidelink (SL). The sidelink includes a physical sidelink control channel (PSCCH) and a physical sidelink share channel (PSSCH). Sidelink control information (SCI) in the PSCCH can indicate information required for receiving the PSSCH, such as PSSCH channel resources and transmission parameters. The PSSCH carries data for sidelink communication.

[0003] Sidelink Discontinuous Reception (DRX) is introduced to reduce device power consumption when user equipment performs sidelink communication. The receiving user equipment monitors the PSCCH channel only during its active time to achieve the energy-saving objective. The transmitting user equipment transmits sidelink data only during the receiving user equipment's active time to avoid data loss. Summary of the Invention [Problem to be solved by the invention]

[0004] The embodiments of the present application provide a method and apparatus for determining a sidelink discontinuous reception configuration, which can be applied to Internet of Vehicles (IEVs) such as vehicle-to-everything (V2X) communications, long term evolution-vehicle (LTE-V) communications, and vehicle-to-vehicle (V2V) communications, as well as to fields such as smart driving and smart internet-connected vehicles. Determining the sidelink discontinuous reception configuration can ensure sidelink communications between user devices, while also reducing device power consumption and avoiding resource waste when the user devices perform sidelink communications. [Means for solving the problem]

[0005] According to a first aspect, an embodiment of the present application provides a method for determining a sidelink discontinuous reception (SL DRX) configuration, the method being applied to a user equipment, the method comprising: determining a sidelink discontinuous reception (SL DRX) configuration scheme in response to a received serving cell message.

[0006] In this technical solution, the SL DRX configuration method to be used is determined based on the serving cell message, thereby ensuring sidelink communication between user equipments, while saving device power consumption and avoiding resource waste when the user equipments perform sidelink communication.

[0007] In one implementation, the method further includes a step of determining to use a first SL DRX configuration scheme in response to a SL DRX indication being present in the serving cell message, or a step of determining to use a second SL DRX configuration scheme in response to a SL DRX indication being absent in the serving cell message.

[0008] In one possible implementation, the absence of the SL DRX indication in the serving cell message includes the serving cell not supporting carrying system information for SL DRX configuration, or the absence of SL DRX configuration in the system information for carrying sidelink configuration transmitted from the serving cell.

[0009] In one possible implementation, the SL DRX indication is one of an indication of SL DRX configuration for broadcast and multicast, an indication of configuration for SL DRX, and an indication to support a Sidelink DRX mechanism.

[0010] In one implementation, the method further includes reporting the received assistance information sent from the far-end user equipment in response to the user equipment being in a connected state and a first SL DRX configuration method being used.

[0011] In one implementation, the method further includes a step of reporting the received SL DRX configuration transmitted from the user equipment of the opposite end in response to the user equipment being in a connected state, a first SL DRX configuration method being used, and the user equipment accepting the SL DRX configuration transmitted from the user equipment of the opposite end.

[0012] In one implementation, the method further includes a step of not reporting the assistance information and / or SL DRX configuration sent from the user equipment of the opposite end in response to the user equipment being in a connected state and a second SL DRX configuration method being used.

[0013] In one implementation, the method further includes a step of not sending an SL DRX configuration to the user equipment at the other end in response to the user equipment being in a connected state, a second SL DRX configuration method being used, and a sidelink transmission method between the user equipment and the user equipment at the other end being unicast.

[0014] In one implementation, the method includes: the user equipment is in a connected state; a second SL DRX configuration mode is used; the sidelink transmission mode between the user equipment and a remote user equipment is unicast; and As a resource selection method The method further includes determining an SL DRX configuration in response to using the autonomous selection method, and sending the determined SL DRX configuration to the user equipment of the remote end.

[0015] In one implementation, the method includes: the user equipment is in a connected state; a second SL DRX configuration mode is used; the sidelink transmission mode between the user equipment and a remote user equipment is unicast; and As a resource selection method The method further includes the step of not sending a SL DRX configuration to the user equipment of the far end in response to using the dynamic scheduling method.

[0016] In one implementation, the method further includes a step in which, in response to the user equipment being in an idle state or an inactive state, a second SL DRX setting method being used, and a sidelink transmission method between the user equipment and a remote user equipment being unicast, the user equipment determines an SL DRX setting and sends the SL DRX setting to the remote user equipment.

[0017] In one implementation, the method further includes a step of not sending an SL DRX configuration to the user equipment at the other end in response to the user equipment being in an idle state or an inactive state, a second SL DRX configuration method being used, and a sidelink transmission method between the user equipment and the user equipment at the other end being unicast.

[0018] In one implementation, the method further includes a step of releasing the configured unicast SL DRX in response to the user equipment being in an idle state or an inactive state, the user equipment moving from a serving cell in which a first SL DRX configuration scheme is used to a serving cell in which a second SL DRX configuration scheme is used, and unicast SL DRX being configured on the user equipment.

[0019] In one implementation, the method further includes a step of releasing the configured unicast SL DRX in response to the user equipment moving from an offline state to a serving cell in which a second SL DRX configuration method is used and unicast SL DRX being configured on the user equipment.

[0020] In one implementation, the method further includes a step of rejecting the received SL DRX configuration and sending a rejection instruction to the user equipment at the other end in response to the second SL DRX configuration method being used and the sidelink transmission method between the user equipment and the user equipment at the other end being unicast.

[0021] In one implementation, the method further includes a step of, in response to the second SL DRX setting method being used and the sidelink transmission method between the user equipment and the user equipment at the opposite end being unicast, the user equipment deciding whether to accept or reject the received SL DRX setting and sending an acceptance instruction or a rejection instruction to the user equipment at the opposite end.

[0022] In one implementation, the method further includes a step of using a pre-configured SL DRX setting in response to the second SL DRX setting method being used and the sidelink transmission method between the user equipment and the user equipment at the opposite end being broadcast or multicast.

[0023] In one implementation, the method further includes a step of not using SL DRX in response to the second SL DRX setting method being used and the sidelink transmission method between the user equipment and the user equipment at the opposite end being broadcast or multicast.

[0024] In one possible implementation, not using SL DRX comprises not activating the DRX function during reception of Sidelink transmissions.

[0025] According to a second aspect, an embodiment of the present application provides a method for determining another sidelink discontinuous reception configuration, the method being applied to a serving cell device, the method including the step of transmitting a serving cell message to a user equipment, wherein the serving cell message includes an SL DRX indication or the SL DRX indication is absent from the serving cell message, wherein the absence of the SL DRX indication from the serving cell message includes that the serving cell does not support carrying system information for SL DRX configuration or that SL DRX configuration is absent from the system information for carrying sidelink configuration transmitted from the serving cell.

[0026] According to a third aspect, an embodiment of the present application provides a communication device that realizes some or all of the functions of the user equipment in the method according to the first aspect. For example, the functions of the communication device may include some or all of the functions of the embodiments of the present application, or may independently implement any of the embodiments of the present application. The functions may be realized by hardware, or may be realized by hardware executing corresponding software. The hardware or software may include one or more units or modules corresponding to the above functions.

[0027] In one implementation, the configuration of a communication device may include a transceiver module and a processing module configured to support the communication device in performing corresponding functions in the above-described methods. The transceiver module is used to support communication between the communication device and other devices. The communication device may further include a storage module coupled to the transceiver module and the processing module for storing computer programs and data required by the communication device.

[0028] As an example, the processing module may be a processor, the transmitting and receiving module may be a transceiver or a communication interface, and the storage module may be a memory.

[0029] According to a fourth aspect, an embodiment of the present application provides another communication device that implements part or all of the functions of the serving cell device in the method according to the second aspect. For example, the functions of the communication device may include part or all of the functions of the embodiments of the present application, or may include a function that independently implements any of the embodiments of the present application. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software may include one or more units or modules corresponding to the above functions.

[0030] In one implementation, the configuration of a communication device may include a transceiver module and a processing module configured to support the communication device in performing corresponding functions in the above-described methods. The transceiver module is used to support communication between the communication device and other devices. The communication device may further include a storage module coupled to the transceiver module and the processing module for storing computer programs and data required by the communication device.

[0031] As an example, the processing module may be a processor, the transmitting and receiving module may be a transceiver or a communication interface, and the storage module may be a memory.

[0032] According to a fifth aspect, an embodiment of the present application provides a communication device, the communication device including a processor, the processor executing the method according to the first aspect when calling a computer program in a memory.

[0033] According to a sixth aspect, an embodiment of the present application provides a communication device, the communication device including a processor, the processor executing the method according to the second aspect when calling a computer program in a memory.

[0034] According to a seventh aspect, an embodiment of the present application provides a communication device, the communication device including a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory to cause the communication device to perform the method according to the first aspect.

[0035] According to an eighth aspect, an embodiment of the present application provides a communication device, the communication device including a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory to cause the communication device to perform the method according to the second aspect.

[0036] According to a ninth aspect, an embodiment of the present application provides a communication device, the device including a processor and an interface circuit, the interface circuit receiving and transmitting code instructions to the processor, and the processor executing the code instructions to cause the device to perform the method according to the first aspect.

[0037] According to a tenth aspect, an embodiment of the present application provides a communication device, the device including a processor and an interface circuit, the interface circuit receiving and transmitting code instructions to the processor, and the processor executing the code instructions to cause the device to perform the method according to the second aspect.

[0038] According to an eleventh aspect, an embodiment of the present application provides a communication system, the system comprising a communication device according to the third aspect and a communication device according to the fourth aspect, or the system comprising a communication device according to the fifth aspect and a communication device according to the sixth aspect, or the system comprising a communication device according to the seventh aspect and a communication device according to the eighth aspect, or the system comprising a communication device according to the ninth aspect and a communication device according to the tenth aspect.

[0039] According to a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for use by the terminal device, the instructions, when executed, causing the terminal device to perform the method of the first aspect.

[0040] According to a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions for use by the network device, the instructions, when executed, causing the network device to perform the method according to the second aspect.

[0041] According to a fourteenth aspect, the present application further provides a computer program product comprising a computer program which, when executed on a computer, causes the computer to carry out the method according to the first aspect above.

[0042] According to a fifteenth aspect, the present application further provides a computer program product comprising a computer program which, when executed on a computer, causes the computer to perform the method according to the second aspect above.

[0043] According to a sixteenth aspect, the present application provides a computer program which, when executed on a computer, causes the computer to carry out the method according to the first aspect above.

[0044] According to a seventeenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to carry out the method according to the second aspect above. [Brief explanation of the drawings]

[0045] In order to more clearly describe the technical solutions in the embodiments or background art of the present disclosure, the following describes the drawings that need to be used in the embodiments or background art of the present disclosure. [Figure 1] 1 is a flowchart of a method for determining a sidelink discontinuous reception configuration provided by an embodiment of the present application; [Figure 2] 10 is a flowchart of a method for determining another sidelink discontinuous reception configuration provided by an embodiment of the present application; [Figure 3] 10 is a flowchart of another method for determining a sidelink discontinuous reception configuration provided by an embodiment of the present application; [Figure 4] 10 is a flowchart of another method for determining a sidelink discontinuous reception configuration provided by an embodiment of the present application; [Figure 5] 1 is a schematic configuration diagram of a communication device provided by an embodiment of the present application; [Figure 6] FIG. 1 is a schematic diagram of another communication device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0046] The following detailed description of the embodiments of the present application is provided in the accompanying drawings, in which the same or similar reference numerals throughout the drawings denote the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and are intended to explain the present application and should not be construed as limiting the present application. In the description of the present application, unless otherwise specified, " / " means "or." For example, A / B can represent A or B. The "and / or" in the text simply describes the relationship between related objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0047] The terms used in the embodiments of the present disclosure are for the purpose of describing particular embodiments and are not intended to limit the embodiments of the present disclosure. Unless the context clearly dictates otherwise, the singular forms "a," "an," and "the" used in the embodiments of the present disclosure and the appended claims also include the plural forms.

[0048] It should be understood that, although various pieces of information may be described using terms such as first, second, and third in the embodiments of the present disclosure, these pieces of information should not be limited to these terms. These terms are used only to distinguish between pieces of information of the same type. For example, first information could also be referred to as second information, and similarly, second information could also be referred to as first information, without departing from the scope of the embodiments of the present disclosure. Depending on the context, the term "when" as used herein can be interpreted as "when," "when," or "responsive to determining."

[0049]

[0023] The following detailed description of the embodiments of the present disclosure will be given, and examples of the embodiments are shown in the drawings. Here, the same or similar reference numerals throughout the drawings indicate the same or similar elements. The embodiments described below with reference to the accompanying drawings are illustrative and are intended to explain the present disclosure, but cannot be understood as limiting the present disclosure.

[0050] To support direct communication between user equipments, a sidelink communication method is introduced, and the interface between user equipments is a PC-5 (sidelink communication) interface. Based on the correspondence relationship between the sending user equipment and the receiving user equipment, sidelink supports three transmission methods: unicast, multicast, and broadcast.

[0051] When a user equipment in a connected state performs sidelink communication, it needs to send a Sidelink UE Information (sidelink communication terminal information) message to a serving cell device (e.g., a base station), which contains sidelink transmission resource request information. This information is a list, and each element in the list is the sidelink transmission characteristics of a target user equipment, including the sidelink identifier of the target user equipment, the corresponding transmission method (including unicast, multicast, and broadcast), QoS (Quality of Service), and the target transmission frequency.

[0052] There are two transmission resource allocation methods for sidelink communication: one is dynamic scheduling by the network, and the other is autonomous selection by user equipment from a resource pool broadcast by the network. Here, dynamic scheduling refers to the network dynamically allocating sidelink transmission resources to user equipment based on the cache data report of the user equipment, while autonomous selection refers to the user equipment randomly selecting transmission resources from the resource pool broadcast by the network or a pre-configured resource pool. The resource pool for dynamic scheduling and the resource pool for autonomous selection are separate, and dynamic scheduling allocates resources collectively by the base station, thereby using a rational algorithm to avoid collisions between different user equipment.

[0053] The base station transmits the Sidelink configuration via a broadcast message SIB 12. The user equipment determines whether the base station supports communication with the user equipment based on whether the base station supports SIB 12.

[0054] On the Uu interface, network devices can configure user equipment for Discontinuous Reception (DRX) to save power consumption. Therefore, Sidelink DRX was introduced in R17. The receiving user equipment monitors the physical sidelink control channel (PSCCH) only during its active time to achieve the energy-saving goal. The transmitting user equipment transmits Sidelink data only during the receiving user equipment's active time to avoid data loss. The active time includes the execution periods of the wake-up timer, inactivity timer, and retransmission timer.

[0055] In the case of broadcast and multicast, the Sidelink DRX period, wake-up timer, and inactivity timer are determined based on QoS, and the correspondence can be obtained by pre-setting or broadcasting by the base station.

[0056] The unicast SL DRX is sent by the sending user equipment to the receiving user equipment, and the receiving user equipment can send assistance information including the advised SL DRX configuration to the sending user equipment.

[0057] If the transmitting user equipment is offline or in a disconnected state, the SL DRX configuration is determined by the transmitting user equipment. If the transmitting user equipment is in a connected state, the SL DRX configuration is determined by the base station of the transmitting user equipment, sent to the transmitting user equipment via an RRC (Radio Resource Control) message, and then forwarded by the transmitting user equipment to the receiving user equipment.

[0058] When the receiving user equipment is in a connected state, it reports the received SL DRX setting to the base station. The base station can save power by adjusting Uu (cellular network communication interface) DRX so that SL DRX and Uu DRX overlap as much as possible.

[0059] When the transmitting user equipment is in a connected state, it reports the received assistance information to the base station, and the base station determines the SL DRX configuration based on the assistance information.

[0060] However, since a base station may support Sidelink but not Sidelink DRX, how to ensure Sidelink communication between user equipments has become an urgent problem to be solved.

[0061] The embodiments of the present application provide a method and apparatus for determining a sidelink discontinuous reception configuration, which can be applied to Internet of Vehicles (IEVs) such as vehicle-to-everything (V2X) communications, long term evolution-vehicle (LTE-V) communications, and vehicle-to-vehicle (V2V) communications, as well as to fields such as smart driving and smart internet-connected vehicles. Determining the sidelink discontinuous reception configuration can ensure sidelink communications between user devices, while also reducing device power consumption and avoiding resource waste when the user devices perform sidelink communications.

[0062] 1 is a flowchart of a method for determining a sidelink discontinuous reception configuration provided by an embodiment of the present application, which can be performed by a user equipment.

[0063] Here, the user equipment in the embodiments of the present application refers to a user-side entity that receives or transmits signals, such as a mobile phone. The user equipment can also be called a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The user equipment may be an automobile with a communication function, a smart car, a mobile phone, a wearable device, a tablet, a personal computer with a wireless transmission / reception function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, etc. The embodiments of the present application do not limit the specific technology and device configuration adopted by the user equipment.

[0064] For example, as shown in FIG. 1, the method for determining a sidelink discontinuous reception configuration may include, but is not limited to, the following step 101:

[0065] In step 101, a sidelink discontinuous reception (SL DRX) configuration scheme is determined in response to a received serving cell message.

[0066] In the present embodiment, the serving cell may support the Sidelink mechanism but not the Sidelink DRX (also referred to as SL DRX) mechanism. If the user equipment is covered by a serving cell that supports Sidelink but does not support SL DRX, the user equipment can determine which SL DRX configuration method to use based on the received serving cell message, i.e., it needs to determine the operation of the user equipment.

[0067] In one implementation, it can be determined whether the serving cell of the user equipment supports SL DRX configuration based on whether an SL DRX indication is present (carry) in a serving cell message transmitted from the serving cell. For example, if an SL DRX indication is present in the serving cell message transmitted from the serving cell, it can be determined that the serving cell of the user equipment supports SL DRX configuration, i.e., it can be determined to use a first SL DRX configuration scheme. For example, if an SL DRX indication is not present in the serving cell message transmitted from the serving cell, it can be determined that the serving cell of the user equipment does not support SL DRX configuration, i.e., it can be determined to use a second SL DRX configuration scheme.

[0068] In an alternative implementation, the SL DRX indication may be an indication of SL DRX configuration for broadcast and multicast, or an indication of configuration for SL DRX, or an indication to support Sidelink DRX.

[0069] In an embodiment of the present application, the serving cell message may be a system message, or the message may be an RRC reconfiguration message. In one implementation, if the indication does not exist in the system message sent from the serving cell, it is determined that the serving cell does not support Sidelink DRX, and the serving cell does not support the system message SIB12, or the serving cell supports SIB12 but after the user equipment acquires SIB12, it finds that there is no SL DRX configuration for broadcast and multicast or no configuration for SL DRX in SIB12, and the user equipment needs to determine which SL DRX configuration method to use, i.e., it needs to determine the operation of the user equipment.

[0070] By implementing the embodiments of the present application, the SL DRX configuration method to be used is determined based on the serving cell message, thereby ensuring sidelink communication between user equipments, while saving device power consumption when the user equipments perform sidelink communication, and avoiding resource waste.

[0071] In some embodiments of the present application, whether the serving cell of the user equipment supports SL DRX configuration can be determined based on whether an SL DRX indication is present in a serving cell message transmitted from the serving cell. Figure 2 is a flowchart of another method for determining a SL DRX configuration provided by an embodiment of the present application. The method for determining a SL DRX configuration can be performed by the user equipment. For example, as shown in Figure 2, the method for determining a SL DRX configuration can include, but is not limited to, the following steps 201-202:

[0072] In step 201, a sidelink discontinuous reception (SL DRX) configuration scheme is determined in response to a received serving cell message.

[0073] In the embodiments of the present application, step 201 can be realized in any of the methods in the embodiments of the present application, and the embodiments of the present application are not limited thereto, and the description thereof will be omitted.

[0074] In step 202, in response to the presence of a SL DRX indication in the serving cell message, it is determined to use a first SL DRX configuration scheme.

[0075] Alternatively, if it is determined that an SL DRX indication exists in the serving cell message, it may determine that the serving cell of the user equipment supports SL DRX configuration, and use the first SL DRX configuration manner.

[0076] In the embodiment of the present application, the SL DRX instruction is one of the following 1) to 3): 1) SL DRX configuration instructions for broadcast and multicast; 2) Setting instructions for SL DRX, 3) Instructions to support Sidelink DRX mechanism.

[0077] In the embodiments of the present application, the presence of an SL DRX indication in the serving cell message can be understood to mean that the serving cell supports carrying system information for SL DRX configuration. For example, when the user equipment receives a message indicating that the serving cell supports carrying system information for SL DRX configuration, the user equipment can determine that the serving cell supports SL DRX configuration and determine to use the first SL DRX configuration scheme. For example, when the serving cell message received by the user equipment and transmitted from the serving cell includes an indication of SL DRX configuration for broadcast or multicast, the user equipment can determine to use the first SL DRX configuration scheme. For example, when the serving cell message received by the user equipment and transmitted from the serving cell includes an indication of supporting a Sidelink DRX mechanism, the user equipment can determine to use the first SL DRX configuration scheme.

[0078] By implementing the embodiments of the present application, the SL DRX configuration method is determined based on the serving cell message transmitted from the serving cell, and the operation of the user equipment is determined based on the SL DRX configuration method, thereby ensuring sidelink communication between user equipments, saving device power consumption when the user equipments perform sidelink communication, and avoiding resource waste.

[0079] In some embodiments of the present application, for example, as shown in FIG. 3, the method for determining a sidelink discontinuous reception configuration may include, but is not limited to, the following steps 301-302.

[0080] In step 301, a sidelink discontinuous reception (SL DRX) configuration scheme is determined in response to a received serving cell message.

[0081] In the embodiments of the present application, step 301 can be realized in any of the methods in the embodiments of the present application, and the embodiments of the present application are not limited thereto, and the description thereof will be omitted.

[0082] In step 302, in response to the absence of a SL DRX indication in the serving cell message, it is determined to use a second SL DRX configuration scheme.

[0083] Alternatively, if it is determined that the SL DRX indication is not present in the serving cell message sent from the serving cell, the user equipment can determine that the serving cell does not support SL DRX configuration, i.e., can use the second SL DRX configuration method.

[0084] Here, the second SL DRX configuration method is different from the first SL DRX configuration method, and can be understood as an SL DRX configuration method used by user equipment when the serving cell does not support the Sidelink DRX mechanism.

[0085] In an embodiment of the present application, the absence of an SL DRX indication in the serving cell message may include the fact that the serving cell does not support carrying system information for SL DRX configuration, or the fact that the SL DRX configuration is not present in the system information for carrying sidelink configuration transmitted from the serving cell. For example, if a serving cell message received by user equipment from a serving cell indicates that the serving cell does not support carrying system information for SL DRX configuration, the user equipment may determine that the serving cell does not support SL DRX configuration and may decide to use a second SL DRX configuration scheme. For example, if a serving cell message received by user equipment from a serving cell indicates system information indicating sidelink configuration but the system message does not include SL DRX configuration, the user equipment may determine that the serving cell does not support SL DRX configuration and may decide to use a second SL DRX configuration scheme. That is, if the serving cell message transmitted from the serving cell does not support carrying system information (e.g., SIB12) for SL DRX configuration, or if the serving cell message transmitted from the serving cell is system information (e.g., SIB12) in which sidelink configuration exists, but the user equipment finds that the system information (e.g., SIB12) does not contain SL DRX configuration after acquiring the system information, the user equipment determines that the serving cell does not support SL DRX configuration, and the user equipment can determine the operation of the user equipment using a second SL DRX configuration method.

[0086] In one implementation, the setting for the SL DRX is one of the following 1) to 3): 1) SL DRX configuration instructions for broadcast and multicast; 2) Setting instructions for SL DRX, 3) Instructions to support Sidelink DRX mechanism.

[0087] For example, it can be determined whether the serving cell supports SL DRX configuration or not based on whether an SL DRX indication is present in a serving cell message transmitted from the serving cell. For example, taking the SL DRX indication as an indication of SL DRX configuration for broadcast and multicast as an example, if the indication of SL DRX configuration for broadcast and multicast is present in the serving cell message transmitted from the serving cell, it can be determined that the serving cell supports SL DRX configuration and that the user equipment uses a first SL DRX configuration scheme, and if the indication of SL DRX configuration for broadcast and multicast is not present in the serving cell message transmitted from the serving cell, it can be determined that the serving cell does not support SL DRX configuration and that the user equipment uses a second SL DRX configuration scheme. For example, taking the SL DRX indication as an indication of configuration for SL DRX as an example, if a configuration indication for SL DRX is present in the message sent from the serving cell, it can be determined that the serving cell supports SL DRX configuration and the user equipment can be determined to use the first SL DRX configuration method, and if a configuration indication for SL DRX is not present in the message sent from the serving cell, it can be determined that the serving cell does not support SL DRX configuration and the user equipment can be determined to use the second SL DRX configuration method.For example, taking the SL DRX instruction as an instruction to support the Sidelink DRX mechanism as an example, if there is an instruction to support the Sidelink DRX mechanism in the message sent from the serving cell, it can be determined that the serving cell supports SL DRX configuration and the user equipment can be determined to use the first SL DRX configuration method; if there is no instruction to support the Sidelink DRX mechanism in the message sent from the serving cell, it can be determined that the serving cell does not support SL DRX configuration and the user equipment can be determined to use the second SL DRX configuration method.

[0088] By implementing the embodiments of the present application, the SL DRX configuration method is determined based on the serving cell message transmitted from the serving cell, and the operation of the user equipment is determined based on the SL DRX configuration method, thereby ensuring sidelink communication between user equipments, saving device power consumption when the user equipments perform sidelink communication, and avoiding resource waste.

[0089] Whether the SL DRX configuration is determined by the user equipment or the serving cell depends on the current connection state of the user equipment. For example, when the transmitting UE is offline or in a disconnected state, the SL DRX configuration is determined by the transmitting UE. When the transmitting UE is in a connected state, the SL DRX configuration is determined by the serving cell (e.g., a base station) of the transmitting UE, transmitted to the transmitting UE via an RRC message, and then forwarded by the transmitting UE to the receiving UE. Hereinafter, with reference to several embodiments, how to determine the operation of the user equipment after determining the SL DRX configuration method when the user equipment is in different states will be described.

[0090] In some embodiments of the present application, in response to the user equipment being in a connected state and the first SL DRX configuration method being used, the assistance information transmitted from the user equipment of the opposite end is reported.

[0091] In this embodiment, the assistance information may include, but is not limited to, the SL DRX configuration of the user equipment of the remote end, which may include, but is not limited to, a DRX cycle, an offset, a timer duration, etc.

[0092] For example, assuming that the user equipment is a transmitting UE, and the user equipment at the other end is a receiving UE, when the transmitting UE is in a connected state, if the serving cell supports the Sidelink DRX mechanism, i.e., if an SL DRX indication is present in the serving cell message received by the transmitting UE, the transmitting UE determines to use the first SL DRX configuration method, and reports the assistance information received from the receiving UE to the serving cell, where the assistance information includes the advised SL DRX configuration (e.g., the SL DRX configuration preferred by the receiving UE). The serving cell can determine the SL DRX configuration based on the assistance information and transmit the SL DRX configuration determined by the serving cell to the transmitting UE via an RRC message. The transmitting UE ensures sidelink communication between the user equipment and the user equipment by forwarding the SL DRX configuration determined by the serving cell to the receiving UE.

[0093] In some embodiments of the present application, when the user equipment is in a connected state, a first SL DRX setting method is used, and the user equipment accepts the SL DRX setting transmitted from the user equipment at the other end, the user equipment reports the received SL DRX setting transmitted from the user equipment at the other end.

[0094] For example, assuming that the user equipment is a receiving UE, if the user equipment at the other end is a transmitting UE and the receiving UE is in a connected state, and the serving cell supports a Sidelink DRX mechanism, i.e., if an SL DRX indication is present in the serving cell message received by the receiving UE, when the receiving UE accepts the received SL DRX configuration transmitted from the transmitting UE, the receiving UE reports the received SL DRX configuration (e.g., DRX cycle, offset, timer length, etc.) transmitted from the transmitting UE, i.e., the receiving UE reports the received SL DRX configuration transmitted from the transmitting UE to the serving cell. The serving cell can achieve power saving by adjusting the Uu DRX so that the SL DRX and Uu DRX overlap as much as possible.

[0095] In some embodiments of the present application, in response to the user equipment being in a connected state and the second SL DRX configuration method being used, the assistance information and / or SL DRX configuration received from the user equipment of the opposite end is not reported.

[0096] For example, assuming that the user equipment is a receiving UE, when the user equipment at the opposite end is a transmitting UE and the receiving UE is in a connected state, if the serving cell does not support the Sidelink DRX mechanism, i.e., there is no SL DRX indication in the serving cell message received by the receiving UE, the behavior of the receiving UE may be, for example, not to report the SL DRX setting sent from the received transmitting UE, i.e., when the receiving UE receives the SL DRX setting sent from the transmitting UE, it does not report the SL DRX setting sent from the transmitting UE to the serving cell.

[0097] Also, for example, assuming that the user equipment is a transmitting UE, if the user equipment at the opposite end is a receiving UE and the transmitting UE is in a connected state, if the serving cell does not support the Sidelink DRX mechanism, i.e., there is no SL DRX indication in the serving cell message received by the transmitting UE, the operation of the transmitting UE may be, for example, when receiving assistance information transmitted from the receiving UE, not to report the assistance information transmitted from the receiving UE to the serving cell.

[0098] In some embodiments of the present application, in response to the user equipment being in a connected state, the second SL DRX setting method being used, and the sidelink transmission method between the user equipment and the user equipment at the other end being unicast, the SL DRX setting is not sent to the user equipment at the other end.

[0099] For example, assuming that the user equipment is a transmitting UE, if the user equipment at the opposite end is a receiving UE, and the transmitting UE is in a connected state, if the serving cell does not support the Sidelink DRX mechanism, i.e., the serving cell message received by the transmitting UE does not include an SL DRX indication, and the Sidelink transmission method between the transmitting UE and the receiving UE is unicast, the operation of the transmitting UE may be, for example, the transmitting UE not to send the SL DRX configuration to the receiving UE.

[0100] In some embodiments of the present application, the user equipment is in a connected state, the second SL DRX configuration mode is used, the sidelink transmission mode between the user equipment and the opposite end user equipment is unicast, and As a resource selection method In response to using the autonomous selection method, the user equipment determines an SL DRX configuration and sends the SL DRX configuration to the user equipment at the far end.

[0101] For example, assuming that the user equipment is a transmitting UE, the user equipment at the other end is a receiving UE, and when the transmitting UE is in a connected state, if the serving cell does not support a Sidelink DRX mechanism, that is, there is no SL DRX indication in the serving cell message received by the transmitting UE, then for the unicast transmission method, As a resource transmission method When an autonomous selection method is used, i.e., the transmitting UE can autonomously randomly select transmission resources from a resource pool broadcasted by the network or a pre-configured resource pool, the transmitting UE can determine an SL DRX configuration and send the SL DRX configuration to the receiving UE, thereby ensuring sidelink communication between user equipments.

[0102] In some embodiments of the present application, the user equipment is in a connected state, the second SL DRX configuration mode is used, the sidelink transmission mode between the user equipment and the opposite end user equipment is unicast, and As a resource transmission method In response to using the dynamic scheduling method, no SL DRX configuration is sent to the user equipment at the far end.

[0103] For example, assuming that the user equipment is a transmitting UE, the user equipment at the other end is a receiving UE, and when the transmitting UE is in a connected state, if the serving cell does not support a Sidelink DRX mechanism, that is, there is no SL DRX indication in the serving cell message received by the transmitting UE, then for the unicast transmission method, As a resource transmission method When using the dynamic scheduling method, the dynamic scheduling means that the serving cell dynamically allocates sidelink transmission resources to the transmitting UE based on the cache data report of the transmitting UE. Since the serving cell does not support the Sidelink DRX mechanism, the transmitting UE does not send the SL DRX configuration to the receiving UE.

[0104] In some embodiments of the present application, in response to the user equipment being in an idle state or an inactive state, the second SL DRX setting method being used, and the sidelink transmission method between the user equipment and the user equipment at the opposite end being unicast, the user equipment determines an SL DRX setting and sends the SL DRX setting to the user equipment at the opposite end.

[0105] For example, assuming that the user equipment is a transmitting UE, and the user equipment at the other end is a receiving UE, when the transmitting UE is in an idle state or an inactive state, if the serving cell does not support the Sidelink DRX mechanism, i.e., there is no SL DRX indication in the serving cell message received by the transmitting UE, then, for a unicast transmission method, the operation of the transmitting UE may be, for example, the transmitting UE determines an SL DRX configuration and sends the SL DRX configuration to the receiving UE, thereby ensuring sidelink communication between the user equipments.

[0106] In some embodiments of the present application, in response to the user equipment being in an idle state or an inactive state, the second SL DRX setting method being used, and the sidelink transmission method between the user equipment and the user equipment at the other end being unicast, the SL DRX setting is not sent to the user equipment at the other end.

[0107] For example, assuming that the user equipment is a transmitting UE, if the user equipment at the opposite end is a receiving UE, and the transmitting UE is in an idle state or an inactive state, if the serving cell does not support the Sidelink DRX mechanism, i.e., there is no SL DRX indication in the serving cell message received by the transmitting UE, for the unicast transmission method, the operation of the transmitting UE may be, for example, not to send the SL DRX configuration to the receiving UE.

[0108] In some embodiments of the present application, when the user equipment is in an idle state or an inactive state, the user equipment moves from a serving cell in which a first SL DRX configuration method is used to a serving cell in which a second SL DRX configuration method is used, and unicast SL DRX is configured on the user equipment, the configured unicast SL DRX is released in response to the user equipment being configured.

[0109] Here, in the embodiment of the present application, the movement may include any one of cell selection, cell reselection, link reestablishment, and switching.

[0110] For example, when a user equipment is in an idle state or an inactive state, if the user equipment moves from a serving cell that supports sidelink DRX to a cell that does not support sidelink DRX, i.e., from a serving cell that uses a first SL DRX configuration method to a serving cell that uses a second SL DRX configuration method, for a unicast-connected user equipment with SL DRX configured, the user equipment can secure sidelink communication with the user equipment at the other end by releasing the configured unicast SL DRX.

[0111] In some embodiments of the present application, in response to the user equipment moving from an offline state to a serving cell in which a second SL DRX configuration method is used and the unicast SL DRX being configured on the user equipment, the configured unicast SL DRX is released.

[0112] For example, when a user equipment moves from an offline state to a cell that does not support sidelink DRX, i.e., moves from an offline state to a serving cell that uses the second SL DRX configuration method, for a unicast-connected user equipment with SL DRX configured, the user equipment can secure sidelink communication with the user equipment at the other end by releasing the configured unicast SL DRX.

[0113] In some embodiments of the present application, in response to the second SL DRX setting method being used and the sidelink transmission method between the user equipment and the user equipment at the opposite end being unicast, the received SL DRX setting is rejected and a rejection instruction is sent to the user equipment at the opposite end.

[0114] For example, when the user equipment is a receiving UE, the user equipment at the other end is a transmitting UE, and the serving cell does not support the Sidelink DRX mechanism, i.e., the serving cell message received by the receiving UE does not include an SL DRX instruction, and the Sidelink transmission method between the receiving UE and the transmitting UE is unicast, the receiving UE rejects the received SL DRX configuration and sends a reject instruction to the transmitting UE.

[0115] In some embodiments of the present application, in response to the second SL DRX setting method being used and the sidelink transmission method between the user equipment and the user equipment at the opposite end being unicast, the device decides to accept or reject the received SL DRX setting and sends an acceptance instruction or a rejection instruction to the user equipment at the opposite end.

[0116] For example, when the user equipment is a receiving UE, the user equipment at the other end is a transmitting UE, and the serving cell does not support the Sidelink DRX mechanism, i.e., the serving cell message received by the receiving UE does not include an SL DRX instruction, and the Sidelink transmission method between the receiving UE and the transmitting UE is unicast, the receiving UE autonomously decides whether to accept or reject the received SL DRX configuration and sends an accept instruction or a reject instruction to the transmitting UE. For example, the receiving UE autonomously decides to accept the received SL DRX configuration, and the receiving UE sends an accept instruction to the transmitting UE; or, for example, the receiving UE autonomously decides to reject the received SL DRX configuration, and the receiving UE sends a reject instruction to the transmitting UE.

[0117] In some embodiments of the present application, a second SL DRX setting method is used, and a pre-configured SL DRX setting is used in response to the sidelink transmission method between the user equipment and the user equipment at the opposite end being broadcast or multicast.

[0118] For example, if the serving cell does not support the Sidelink DRX mechanism, i.e., there is no SL DRX indication in the serving cell message received by the user equipment, the second SL DRX configuration method must be used, and the Sidelink transmission method between the user equipment and the user equipment at the opposite end must be broadcast or multicast, and the user equipment can use the pre-configured SL DRX configuration.

[0119] In some embodiments of the present application, the second SL DRX configuration method is used, and in response to the sidelink transmission method between the user equipment and the remote user equipment being broadcast or multicast, the SL DRX is not used, where in the embodiments of the present application, not using the SL DRX includes not activating the DRX function during reception of the sidelink transmission.

[0120] For example, if the serving cell does not support the Sidelink DRX mechanism, i.e., the serving cell message received by the user equipment does not include an SL DRX indication, and the Sidelink transmission method between the user equipment and the user equipment at the opposite end is broadcast or multicast, the user equipment can use SL DRX, for example, it does not need to activate the DRX function while receiving the Sidelink transmission.

[0121] As a result, the embodiments of the present application determine which SL DRX configuration method to use based on the serving cell message, thereby determining the operation of user equipment that supports Sidelink DRX, ensuring sidelink communication between user equipments, and reducing device power consumption and avoiding resource waste when user equipments perform sidelink communication.

[0122] The above embodiment describes an implementation of the method for determining a SL DNR configuration from the user equipment side according to the embodiment of the present application. The embodiment of the present application further provides another method for determining a SL DNR configuration, and the following describes an implementation of the method for determining a SL DNR configuration from the serving cell device side. Figure 4 is a flowchart of another method for determining a SL DNR configuration according to the embodiment of the present application. The method for determining a SL DNR configuration according to the embodiment of the present application can be performed by the serving cell device.

[0123] Note that the serving cell device in the embodiments of the present application may be a network device, which is a network entity for transmitting or receiving signals. For example, the network device may be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present application do not limit the specific technology and device form adopted by the network device. The network device provided by the embodiments of the present application may be composed of a central unit (CU) and distributed units (DUs), where the CU may be referred to as a control unit. The CU-DU structure allows the protocol layers of a network device, for example, a base station, to be separated, with some protocol layer functions being centrally controlled by the CU and some or all of the remaining protocol layer functions being distributed to the DUs, and the DUs being centrally controlled by the CU.

[0124] For example, as shown in FIG. 4, the method for determining a sidelink discontinuous reception configuration may include, but is not limited to, the following step 401:

[0125] In step 401, a serving cell message is sent to the user equipment.

[0126] Here, in an embodiment of the present application, an SL DRX indication is present in the serving cell message, or an SL DRX indication is not present in the serving cell message. In one implementation, the absence of an SL DRX indication in the serving cell message includes that the serving cell does not support carrying system information for SL DRX configuration, or that an SL DRX configuration is not present in the system information for carrying sidelink configuration sent from the serving cell.

[0127] In the embodiment of the present application, the SL DRX instruction is one of the following 1) to 3): 1) SL DRX configuration instructions for broadcast and multicast; 2) Setting instructions for SL DRX, 3) Instructions to support Sidelink DRX mechanism.

[0128] For example, it can be determined whether the serving cell supports SL DRX configuration or not based on whether an SL DRX indication is present in a serving cell message transmitted from the serving cell. For example, taking the SL DRX indication as an indication of SL DRX configuration for broadcast and multicast as an example, if the indication of SL DRX configuration for broadcast and multicast is present in the serving cell message transmitted from the serving cell, it can be determined that the serving cell supports SL DRX configuration and that the user equipment uses a first SL DRX configuration scheme, and if the indication of SL DRX configuration for broadcast and multicast is not present in the serving cell message transmitted from the serving cell, it can be determined that the serving cell does not support SL DRX configuration and that the user equipment uses a second SL DRX configuration scheme. For example, taking the SL DRX indication as an indication of configuration for SL DRX as an example, if a configuration indication for SL DRX is present in the message sent from the serving cell, it can be determined that the serving cell supports SL DRX configuration and the user equipment can be determined to use the first SL DRX configuration method, and if a configuration indication for SL DRX is not present in the message sent from the serving cell, it can be determined that the serving cell does not support SL DRX configuration and the user equipment can be determined to use the second SL DRX configuration method.For example, assuming that the SL DRX indication is an indication to support the Sidelink DRX mechanism, if the message transmitted from the serving cell contains an indication to support the Sidelink DRX mechanism, the serving cell may determine that it supports the SL DRX configuration and the user equipment may determine to use the first SL DRX configuration scheme. If the message transmitted from the serving cell does not contain an indication to support the Sidelink DRX mechanism, the serving cell may determine that it does not support the SL DRX configuration and the user equipment may determine to use the second SL DRX configuration scheme. If it is determined that the serving cell supports or does not support the SL DRX configuration, the operation of the user equipment may be determined based on the status of the user equipment and the serving cell. For an implementation of determining the operation of the user equipment, refer to the implementation of the method for determining sidelink discontinuous reception configuration described above on the user equipment side, and description thereof will be omitted here.

[0129] By implementing the embodiments of the present application, the SL DRX configuration method is determined based on the serving cell message sent from the serving cell, and the operation of the user equipment is determined based on the SL DRX configuration method, thereby ensuring sidelink communication between user equipments, reducing device power consumption when the user equipments perform sidelink communication, and avoiding resource waste.

[0130] In the above embodiments provided by the present disclosure, the methods provided by the embodiments of the present disclosure are described from the perspective of user equipment and a serving cell device, respectively. To realize each function in the methods provided by the above embodiments of the present disclosure, the user equipment and the serving cell device may include a hardware structure and a software module, and each function is realized in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some functions of each function can be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module.

[0131] 5 is a schematic configuration diagram of a communication device 50 provided by an embodiment of the present application. The communication device 50 shown in FIG. 5 may include a transceiver module 501 and a processing module 502. The transceiver module 501 may include a transmitting module and / or a receiving module, where the transmitting module realizes a transmitting function and the receiving module realizes a receiving function, and the transceiver module 501 may realize a transmitting function and / or a receiving function.

[0132] The communication device 50 may be user equipment, a device within the user equipment, or a device usable in conjunction with the user equipment, or the communication device 50 may be a serving cell device, a device within the serving cell device, or a device usable in conjunction with the serving cell device.

[0133] When the communication device 50 is user equipment: In an embodiment of the present application, the processing module 502 determines a sidelink discontinuous reception (SL DRX) configuration scheme in response to a received serving cell message.

[0134] In one implementation, the processing module 502 further determines to use a first SL DRX configuration scheme in response to the presence of an SL DRX indication in the serving cell message, or determines to use a second SL DRX configuration scheme in response to the absence of an SL DRX indication in the serving cell message.

[0135] In one possible implementation, the absence of the serving cell message in the serving cell message includes that the serving cell does not support carrying system information for SL DRX configuration, or that SL DRX configuration is not present in the system information for carrying sidelink configuration transmitted from the serving cell.

[0136] In one possible implementation, the SL DRX indication is one of an indication of SL DRX configuration for broadcast and multicast, an indication of configuration for SL DRX, and an indication to support a Sidelink DRX mechanism.

[0137] In one implementation, the transceiver module 501 reports the received assistance information sent from the far-end user equipment in response to the user equipment being in a connected state and the first SL DRX configuration method being used.

[0138] In one implementation, the transceiver module 501 reports the received SL DRX configuration transmitted from the user equipment of the opposite end in response to the user equipment being in a connected state, the first SL DRX configuration method being used, and the user equipment accepting the SL DRX configuration transmitted from the user equipment of the opposite end.

[0139] In one implementation, the transceiver module 501 further does not report the assistance information and / or SL DRX configuration sent from the user equipment of the opposite end received in response to the user equipment being in a connected state and the second SL DRX configuration method being used.

[0140] In one implementation, the transceiver module 501 further does not send the SL DRX configuration to the user equipment at the other end in response to the user equipment being in a connected state, the second SL DRX configuration method being used, and the sidelink transmission method between the user equipment and the user equipment at the other end being unicast.

[0141] In one implementation, the processing module 502 further performs the following: when the user equipment is in a connected state, a second SL DRX configuration mode is used, the sidelink transmission mode between the user equipment and the opposite end user equipment is unicast, and As a resource transmission method In response to using the autonomous selection method, the transceiver module 501 determines the SL DRX configuration, and further transmits the determined SL DRX configuration to the user equipment at the other end.

[0142] In one implementation, the transceiver module 501 further selects whether the user equipment is in a connected state, the second SL DRX configuration mode is used, the sidelink transmission mode between the user equipment and the remote user equipment is unicast, and the user equipment As a resource transmission method In response to using the dynamic scheduling method, no SL DRX configuration is sent to the user equipment at the far end.

[0143] In one implementation, the processing module 502 further determines an SL DRX setting in response to the user equipment being in an idle state or an inactive state, the second SL DRX setting method being used, and the sidelink transmission method between the user equipment and the user equipment at the other end being unicast, and the transceiver module 501 further transmits the determined SL DRX setting to the user equipment at the other end.

[0144] In one implementation, the transceiver module 501 further does not send the SL DRX configuration to the user equipment at the other end in response to the user equipment being in an idle state or an inactive state, the second SL DRX configuration method being used, and the sidelink transmission method between the user equipment and the user equipment at the other end being unicast.

[0145] In one implementation, the processing module 502 further releases the configured unicast SL DRX in response to the user equipment being in an idle state or an inactive state, the user equipment moving from a serving cell using a first SL DRX configuration scheme to a serving cell using a second SL DRX configuration scheme, and the unicast SL DRX being configured on the user equipment.

[0146] In one implementation, the processing module 502 further releases the configured unicast SL DRX in response to the user equipment moving from an offline state to a serving cell in which a second SL DRX configuration scheme is used and the unicast SL DRX being configured on the user equipment.

[0147] In one implementation, the processing module 502 further rejects the received SL DRX setting in response to the second SL DRX setting method being used and the sidelink transmission method between the user equipment and the user equipment at the opposite end being unicast, and the transceiver module 501 further sends a rejection instruction to the user equipment at the opposite end.

[0148] In one implementation, the processing module 502 further determines to accept or reject the received SL DRX setting in response to the second SL DRX setting method being used and the sidelink transmission method between the user equipment and the user equipment at the opposite end being unicast, and the transceiver module 501 further sends an acceptance instruction or a rejection instruction to the user equipment at the opposite end.

[0149] In one implementation, the processing module 502 further uses the pre-configured SL DRX setting in response to the second SL DRX setting method being used and the sidelink transmission method between the user equipment and the user equipment at the opposite end being broadcast or multicast.

[0150] In one implementation, the processing module 502 further not uses SL DRX in response to the second SL DRX configuration method being used and the sidelink transmission method between the user equipment and the far-end user equipment being broadcast or multicast. In an alternative embodiment, not using SL DRX includes not activating the DRX function during reception of the sidelink transmission.

[0151] When the communication device 50 is a serving cell device: In an embodiment of the present application, the transceiver module 501 sends a serving cell message to a user equipment, and an SL DRX indication exists in the serving cell message, or an SL DRX indication is not included in the serving cell message, where the absence of an SL DRX indication in the serving cell message includes that the serving cell does not support carrying system information for SL DRX configuration, or that an SL DRX configuration does not exist in the system information for carrying sidelink configuration sent from the serving cell.

[0152] Regarding the apparatus in the above-described embodiment, the specific method by which each module performs an operation is described in detail in the embodiment relating to the method, but will not be described in detail here.

[0153] Referring to Fig. 6, Fig. 6 is a schematic structural diagram of another communication device 60 provided by an embodiment of the present application. The communication device 60 may be a serving cell device, a user equipment, a chip, a chip system, a processor, etc. that assists the serving cell device to realize the above method, or a chip, a chip system, a processor, etc. that assists the user equipment to realize the above method. This device can be used to realize the method described in the above method embodiment, and specific reference can be made to the description of the above method embodiment.

[0154] The communication device 60 may include one or more processors 601. The processor 601 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor can process communication protocols and communication data, and the central processing unit may be used to control the communication device (e.g., a network side device, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute computer programs, and process data of the computer programs.

[0155] Optionally, the communication device 60 may further include one or more memories 602, in which computer programs 604 may be stored, and the processor 601 executes the computer programs 604 so that the communication device performs the methods described in the above method embodiments. Optionally, data may be stored in the memory 602. The communication device 60 and the memory 602 may be configured separately or integrated together.

[0156] Optionally, the communication device 60 may further include a transceiver 605 and an antenna 606. The transceiver 605 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to realize a transmitting and receiving function. The transceiver 605 may include a receiver and a transmitter, and the receiver may be referred to as a receiver or a receiving circuit, etc., and is used to realize a receiving function, and the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is used to realize a transmitting function.

[0157] Optionally, the communication device 60 may further include one or more interface circuits 607. The interface circuits 607 are used to receive and transmit code instructions to the processor 601. The processor 601 executes the code instructions so that the communication device 60 performs the methods described in the above method embodiments.

[0158] When the communication device 60 is user equipment: the processor 601 executes step 101 in FIG. 1, executes steps 201 and 202 in FIG. 2, and executes steps 301 and 302 in FIG.

[0159] When the communication device 60 is a serving cell device: the transceiver 605 performs step 401 in FIG.

[0160] In one implementation, the processor 601 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used to read and write code / data, or the transceiver circuit, interface, or interface circuit may be used to transmit or receive signals.

[0161] In one implementation, the processor 601 can store a computer program 603, which executes on the processor 601, thereby enabling the communication device 60 to perform the methods described in the above method embodiments. The computer program 603 can be fixed to the processor 601, in which case the processor 601 can be implemented by hardware.

[0162] In one implementation, the communication device 60 can include circuitry capable of performing the transmit, receive, or communication functions of the method embodiments described above. The processors and transceivers described in this disclosure can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processors and transceivers can be fabricated using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide semiconductor (nMOS), p-type metal oxide semiconductor (PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0163] The communication device described in the above embodiments may be a network device or a terminal device (e.g., a terminal device in the method embodiments described above), but the scope of the communication device in the description of this disclosure is not limited thereto, and the structure of the communication device may not be limited by FIG. 12. The communication device may be an independent device or part of a larger device. For example, the communication device may be any of the following (1) to (6): (1) An independent integrated circuit IC or chip, or a chip system or subsystem. (2) A set having one or more ICs, optionally the set of ICs may include a memory element for storing data, computer programs. (3) ASIC, such as a modem. (4) Modules that can be embedded within other devices. (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handhelds, mobile units, in-vehicle devices, network-side devices, cloud devices, artificial intelligence devices, etc. (6)Others.

[0164] As will be appreciated by those skilled in the art, the various illustrative logical blocks and steps described in the embodiments of the present disclosure can be realized by electronic hardware, computer software, or a combination of both. Whether such functions are realized by hardware or software is determined by specific applications and overall system design requirements. Those skilled in the art can realize the above functions using various methods for each specific type of application, but such realization should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

[0165] An embodiment of the present disclosure further provides a system for determining a sidelink discontinuous reception configuration, the system including a communication device that is designated as user equipment and a communication device that is designated as a serving cell device in the embodiment of FIG. 5 described above, or the system including a communication device that is designated as user equipment and a communication device that is designated as a serving cell device in the embodiment of FIG. 6 described above.

[0166] The present disclosure further provides a computer-readable storage medium having instructions stored thereon, which, when executed by a computer, implement the functionality of any one of the method embodiments above.

[0167] The present disclosure further provides a computer program product, which, when executed by a computer, implements the functionality of any one of the above method embodiments.

[0168] In the above embodiments, all or part of the implementation may be implemented in software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the implementation may be in the form of a computer program product. The computer program product includes one or more computer programs. When loaded and executed on a computer, the computer programs generate all or part of the flows or functions described in the embodiments of the present disclosure. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer program may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, radio, microwave, etc.) methods. The computer-readable storage medium may be any available medium accessible by a computer, or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid state drives (SSDs)).

[0169] At least one in the present disclosure can also be described as one or more, and more can be two, three, four or more, and the present disclosure is not limited thereto. In the embodiments of the present disclosure, for one technical feature, technical features in the type of technical feature are distinguished by "first," "second," "third," "A," "B," "C," and "D," etc., and there is no order of precedence or chronology between the technical features described as "first," "second," "third," "A," "B," "C," and "D."

[0170] The correspondences shown in each table in the present disclosure may be set or predefined. The values ​​of the information in each table are merely examples and can be set as other values, and the present disclosure is not limited thereto. When setting the correspondences between information and each parameter, not all of the correspondences shown in each table need to be set. For example, in the tables of the present disclosure, the correspondences shown by certain rows may not be set. As another example, appropriate transformations such as splitting and merging can be performed based on the above tables. The names of the parameters shown in the titles of the above tables may be other names understandable to the communication device, and the values ​​and display methods of the parameters may be other values ​​and display methods understandable to the communication device. When implemented, the above tables may also use other data structures, such as arrays, queues, containers, stacks, linear tables, pointers, link tables, trees, diagrams, structures, classes, heaps, hash lists, or hash tables.

[0171] Predefined in this disclosure can be understood as defined, predefined, stored, prestored, prenegotiated, pre-set, hardened, or pre-baked.

[0172] Those skilled in the art will recognize that the units and algorithm steps of each example described in the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether a function is implemented in hardware or software is determined by the specific application and design constraints of the technical solution. Those skilled in the art may realize the described functions using different methods for each specific application, but such realization should not be considered beyond the scope of the present disclosure.

[0173] As will be apparent to those skilled in the art, for convenience and brevity of description, the specific operating processes of the above-described systems, devices and units may refer to the corresponding processes in the above-described method embodiments, and the description thereof will be omitted here.

[0174] As described above, the present disclosure only covers specific embodiments, but the scope of protection of the present disclosure is not limited thereto, and those skilled in the art can easily imagine that modifications or replacements within the technical scope disclosed in the present disclosure should fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be determined based on the scope of protection of the claims.

Claims

1. 1. A method for determining a sidelink discontinuous reception configuration, the method being applied to a user equipment, the method comprising: determining a sidelink discontinuous reception (SL DRX) configuration scheme based on the received serving cell message; determining to use a first SL DRX configuration method if an SL DRX indication exists in the serving cell message, where the presence of the SL DRX indication in the serving cell message indicates that the serving cell supports SL DRX configuration; The method comprises: When the user equipment is in a connected state, the Sidelink transmission mode between the user equipment and the user equipment of the opposite end is unicast, and the resource selection mode of the user equipment is autonomous selection mode, the user equipment determines an SL DRX setting and sends the SL DRX setting to the user equipment of the opposite end; or When the user equipment is in an idle state or an inactive state and a Sidelink transmission mode between the user equipment and the opposite end user equipment is unicast, the user equipment determines an SL DRX setting and sends the SL DRX setting to the opposite end user equipment; further comprising:

1. A method for determining a sidelink discontinuous reception configuration, comprising:

2. The absence of SL DRX indication in the serving cell message indicates that the serving cell does not support the SL DRX configuration.

2. The method for determining a sidelink discontinuous reception configuration according to claim 1 .

3. The SL DRX instruction is Indicating SL DRX settings for broadcast and multicast; A configuration instruction for SL DRX; an indication that the Sidelink DRX mechanism is supported; 2. The method for determining a sidelink discontinuous reception configuration according to claim 1 .

4. When the user equipment is in a connected state and a first SL DRX configuration manner is used, the method further includes reporting the received assistance information sent from the far-end user equipment to a network device; 2. The method for determining a sidelink discontinuous reception configuration according to claim 1 .

5. When the user equipment is in a connected state, a first SL DRX setting method is used, and the user equipment accepts the received SL DRX setting sent from the user equipment of the opposite end, the method further includes reporting the received SL DRX setting sent from the user equipment of the opposite end to a network device; 2. The method for determining a sidelink discontinuous reception configuration according to claim 1 .

6. The method comprises: If the SL DRX indication is not present in the serving cell message, determining to use a second SL DRX configuration method; The absence of the SL DRX indication in the serving cell message indicates that: the serving cell does not provide system information to convey SL DRX configuration; Or, the system information for conveying the sidelink configuration transmitted from the serving cell does not include an SL DRX configuration.

2. The method for determining a sidelink discontinuous reception configuration according to claim 1 .

7. When the user equipment is in a connected state and the second SL DRX configuration manner is used, the method further includes not reporting the assistance information and / or SL DRX configuration sent from the user equipment of the opposite end.

7. The method for determining a sidelink discontinuous reception configuration according to claim 6 .

8. 1. A method for determining a sidelink discontinuous reception configuration, the method being applied to a network device, the method comprising:

8. The method according to claim 1, further comprising the step of: transmitting a serving cell message to a user equipment that performs the method according to claim 1, wherein the serving cell message is used by the user equipment to determine a sidelink discontinuous reception (SL DRX) configuration scheme, and the presence of an SL DRX indication in the serving cell message instructs the user equipment to use a first SL DRX configuration scheme, and the presence of the SL DRX indication in the serving cell message indicates that the serving cell supports SL DRX configuration.

1. A method for determining a sidelink discontinuous reception configuration, comprising:

9. The absence of the SL DRX indication in the serving cell message indicates that the serving cell does not support the SL DRX configuration.

9. The method for determining a sidelink discontinuous reception configuration according to claim 8.

10. The SL DRX instruction is Indicating SL DRX settings for broadcast and multicast; A configuration instruction for SL DRX; an indication that the Sidelink DRX mechanism is supported; 9. The method for determining a sidelink discontinuous reception configuration according to claim 8.

11. The method comprises: receiving assistance information transmitted from the user equipment, wherein the assistance information is reported by the user equipment to the network device when the user equipment is in a connected state and a first SL DRX configuration manner is used, and the assistance information is transmitted from a remote user equipment to the user equipment; 9. The method for determining a sidelink discontinuous reception configuration according to claim 8.

12. The method comprises: receiving an SL DRX setting sent from the user equipment, the SL DRX setting being sent from a remote user equipment to the user equipment, and the SL DRX setting being reported by the user equipment to the network device when the user equipment is in a connected state and a first SL DRX setting method is used; 9. The method for determining a sidelink discontinuous reception configuration according to claim 8.

13. The absence of the SL DRX indication in the serving cell message instructs the user equipment to use a second SL DRX configuration manner; The absence of the SL DRX indication in the serving cell message indicates that: the serving cell does not provide system information to convey SL DRX configuration; Or, the system information for conveying the sidelink configuration transmitted from the serving cell does not include an SL DRX configuration.

9. The method for determining a sidelink discontinuous reception configuration according to claim 8.

14. A user equipment comprising: a processing module; the processing module: determining a sidelink discontinuous reception (SL DRX) configuration scheme based on the received serving cell message; If an SL DRX indication exists in the serving cell message, determine to use a first SL DRX configuration method, and the presence of the SL DRX indication in the serving cell message indicates that the serving cell supports SL DRX configuration; The processing module further comprises: When the user equipment is in a connected state, the Sidelink transmission mode between the user equipment and the user equipment of the opposite end is unicast, and the resource selection mode of the user equipment is autonomous selection mode, determine an SL DRX configuration and send the SL DRX configuration to the user equipment of the opposite end; or When the user equipment is in an idle state or an inactive state and a Sidelink transmission mode between the user equipment and the opposite end user equipment is unicast, determine an SL DRX setting and send the SL DRX setting to the opposite end user equipment; 1. A user equipment characterized by:

15. 1. A network device, comprising:

15. The apparatus according to claim 14, further comprising: a transceiver module for transmitting a serving cell message to a user equipment, the serving cell message being used by the user equipment to determine a sidelink discontinuous reception (SL DRX) configuration scheme; the presence of an SL DRX indication in the serving cell message instructing the user equipment to use a first SL DRX configuration scheme; and the presence of the SL DRX indication in the serving cell message indicating that a serving cell supports SL DRX configuration. A network device comprising:

16. A communication device, a processor and a memory, a computer program stored in the memory, and the processor executes the computer program stored in the memory to cause the device to perform the method according to any one of claims 1 to 7; A communication device comprising:

17. A communication device, a processor and a memory, A computer program is stored in the memory, and the processor executes the computer program stored in the memory to cause the device to perform the method according to any one of claims 8 to 13. A communication device comprising:

18. A computer-readable storage medium having stored thereon instructions which, when executed, effect the method of any one of claims 1 to 7. A computer-readable storage medium comprising:

19. A computer-readable storage medium having stored thereon instructions which, when executed, effect the method of any one of claims 8 to 13. A computer-readable storage medium comprising:

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