Method, apparatus, communication device, and storage medium for determining target terminal

Abstract

The present invention provides a method, an apparatus, a communication device, and a storage medium for determining a target terminal, the method including a step (201) in which a transmitting terminal selects a target terminal that satisfies at least a carrier aggregation transmission condition for a sidelink (SL) grant. If the carrier aggregation transmission condition is satisfied, the target terminal can receive data via a carrier associated with the SL grant, thereby reducing packet loss and improving the reliability of data communication.

Description

[Technical Field]

[0001] The present disclosure relates to the field of communications technology, and in particular, but not exclusively, to a method, apparatus, communication device, and storage medium for determining a target terminal. [Background technology]

[0002] To support direct communication between user equipment (UEs), the sidelink communication method has been introduced, and the interface between UEs is PC-5. Depending on the correspondence between the transmitting terminal and the target terminal, the sidelink supports three transmission methods: unicast, multicast, and broadcast. There are two ways to allocate transmission resources for sidelink communication: one is dynamic scheduling by the network (Mode 1), and the other is autonomous selection by the UE from a resource pool broadcast by the network (Mode 2). Dynamic scheduling means that the network dynamically allocates sidelink transmission resources to the UE based on the UE's buffered data reports, while autonomous selection means that the UE randomly selects transmission resources from a resource pool broadcast by the network or preconfigured by the network. Summary of the Invention [Problem to be solved by the invention]

[0003] Embodiments of the present disclosure disclose a method, an apparatus, a communication device, and a storage medium for determining a target terminal. [Means for solving the problem]

[0004] According to a first aspect of the present disclosure, there is provided a method for determining a target terminal executed by a transmitting terminal, the method comprising: The method includes selecting a target terminal that satisfies at least a carrier aggregation transmission condition for a sidelink (SL) grant.

[0005] In one embodiment, the carrier aggregation transmission conditions include: The target terminal is associated with unicast, and the target terminal supports data reception on a carrier associated with the SL grant.

[0006] In one embodiment, the carrier aggregation transmission conditions include: The target terminal is associated with multicast and / or groupcast, and transmission attributes associated with the target terminal include supporting the carrier aggregation transmission.

[0007] In one embodiment, the carrier aggregation transmission conditions include: the target terminal is associated with a multicast and / or a groupcast, and the target terminal does not have an associated transmission attribute, and the target terminal satisfies a first transmission condition and / or a second transmission condition; The first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal, and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one Medium Access Control Element (MAC CE) with the highest priority among the logical channels and Medium Access Control Element (MAC CE) that satisfy the third transmission condition, and / or has at least one logical channel with the highest priority.

[0008] In one embodiment, the third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit a medium access control service data unit (MAC SDU) with a configured grant type 1; If a list of authorized use grants is configured, said list includes a configuration grant identifier associated with said SL grant; and If there are no Physical Sidelink Feedback Channel (PSFCH) resources associated with the SL grant, then a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is disabled.

[0009] In one embodiment, the step of selecting a target terminal that satisfies at least a carrier aggregation transmission condition includes: selecting the target terminal that satisfies a carrier aggregation transmission condition and also satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

[0010] In one embodiment, the third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit MAC SDUs with a configured grant type 1; If a list of authorized use grants is configured, said list includes a configuration grant identifier associated with said SL grant; and If there is no PSFCH resource associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is disabled.

[0011] In one embodiment, the method comprises: The method further includes discarding the SL grant in response to failure to select the target terminal that satisfies a carrier aggregation transmission condition and also satisfies a first transmission condition and / or a second transmission condition.

[0012] In one embodiment, the step of selecting a target terminal that satisfies at least a carrier aggregation transmission condition includes: A logical channel prioritization (LCP) processing process includes selecting the target terminal that meets at least the carrier aggregation transmission requirements.

[0013] According to a second aspect of the present disclosure, there is provided an apparatus for determining a target terminal to be located at a transmitting terminal, the apparatus comprising: The method comprises: providing a processing module configured to select target terminals that meet at least carrier aggregation transmission conditions for a sidelink (SL) grant;

[0014] In one embodiment, the carrier aggregation transmission conditions include: The target terminal is associated with unicast, and the target terminal supports data reception on a carrier associated with the SL grant. In one embodiment, the carrier aggregation transmission conditions include: The target terminal is associated with multicast and / or groupcast, and transmission attributes associated with the target terminal include supporting the carrier aggregation transmission.

[0015] In one embodiment, the carrier aggregation transmission conditions include: the target terminal is associated with a multicast and / or a groupcast, and the target terminal does not have an associated transmission attribute, and the target terminal satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

[0016] In one embodiment, the third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit a medium access control service data unit (MAC SDU) with a configured grant type 1; If a list of authorized use grants is configured, said list includes a configuration grant identifier associated with said SL grant; and If there are no physical sidelink feedback channel (PSFCH) resources associated with the SL grant, a hybrid automatic repeat request (HARQ) attribute associated with the logical channel is disabled.

[0017] In one embodiment, the processing module further comprises: configured to select the target terminal that satisfies a carrier aggregation transmission condition and also satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

[0018] In one embodiment, the third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit a MAC SDU with a configured grant type 1; If a list of authorized use grants is configured, said list includes a configuration grant identifier associated with said SL grant; and If there is no PSFCH resource associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is disabled.

[0019] In one embodiment, the processing module further comprises: The SL grant is discarded in response to failure to select the target terminal that satisfies a carrier aggregation transmission condition and also satisfies the first transmission condition and / or the second transmission condition.

[0020] In one embodiment, the processing module further comprises: A logical channel priority (LCP) processing process is configured to select the target terminal that satisfies at least the carrier aggregation transmission condition.

[0021] According to a third aspect of the present disclosure, there is provided a communication device, the communication device comprising: a processor, and a memory for storing instructions executable by said processor; The processor, when executing the executable instructions, implements the method for determining a target terminal according to the first aspect.

[0022] According to a fourth aspect of the present disclosure, there is provided a computer storage medium, the computer storage medium storing a computer-executable program, which, when executed by a processor, realizes the method for determining a target terminal according to the first aspect.

[0023] In an embodiment of the present invention, the transmitting terminal selects a target terminal that satisfies at least a carrier aggregation transmission condition for the sidelink (SL) grant, and if the carrier aggregation transmission condition is satisfied, the target terminal can receive data via the carrier associated with the SL grant, thereby reducing packet loss and improving the reliability of data communication.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the embodiments of the present disclosure. [Brief explanation of the drawings]

[0025] [Figure 1] FIG. 1 is a schematic diagram showing the structure of a wireless communication system. [Figure 2] FIG. 2 is a flowchart illustrating a method for determining a target terminal according to an exemplary embodiment. [Figure 3] FIG. 3 is a flowchart illustrating a method for determining a target terminal according to an exemplary embodiment. [Figure 4] FIG. 4 is a flowchart illustrating a method for determining a target terminal according to an exemplary embodiment. [Figure 5] FIG. 5 is a block diagram illustrating an apparatus for determining a target terminal according to an exemplary embodiment. [Figure 6] FIG. 6 is a block diagram of a UE according to an exemplary embodiment. [Figure 7] FIG. 7 is a block diagram of a base station according to an exemplary embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0026] Illustrative examples are described in detail below, examples of which are illustrated in the drawings. When the following description refers to the drawings, the same numerals in different drawings represent the same or similar elements unless otherwise specified. The embodiments described in the following illustrative examples do not represent all embodiments consistent with embodiments of the present disclosure. On the contrary, they are merely examples of apparatus and methods consistent with some aspects of embodiments of the present disclosure, as detailed in the appended claims.

[0027] The terms used in the embodiments of the present disclosure are merely for the purpose of describing particular embodiments and are not intended to limit the embodiments of the present disclosure. As used in the embodiments of the present disclosure and in the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and / or" as used herein means to include any and all possible combinations of one or more of the associated listed items.

[0028] It should be understood that, although terms such as "first," "second," and "third" may be used to describe various pieces of information in the embodiments of the present disclosure, these terms 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 may be referred to as "second information," and similarly, second information may be referred to as "first information" without departing from the scope of the embodiments of the present disclosure. Depending on the context, the word "if" used herein may be interpreted as "when," "at," or "depending on," or "depending on the decision."

[0029] 1, a schematic diagram of the structure of a wireless communication system according to an embodiment of the present disclosure is shown. As shown in FIG. 1, the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include multiple user equipments 110 and multiple base stations 120.

[0030] Here, user equipment 110 may be equipment that provides voice and / or data connectivity to a user. User equipment 110 can communicate with one or more core networks via a Radio Access Network (RAN). User equipment 110 may be an Internet of Things user device, such as a sensor device, a mobile phone (or "cellular" phone), or a computer with Internet of Things user equipment, and may be, for example, a fixed, portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted device. For example, user equipment 110 may be a station (STA), subscriber unit, subscriber station, mobile station, mobile, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment. Alternatively, user equipment 110 may be an unmanned air vehicle device. Alternatively, user equipment 110 may be an in-vehicle device such as a drive computer with wireless communication capabilities, or a wireless user equipment externally connected to a drive computer, or user equipment 110 may be roadside equipment such as a street light, traffic light, or another roadside equipment with wireless communication capabilities.

[0031] The base station 120 may be a network side device in a wireless communication system. Here, the wireless communication system may be the 4th generation mobile communication (4G) system, also called a Long Term Evolution (LTE) system. Alternatively, the wireless communication system may be a 5G system, also called a New Radio system or a 5G NR system. Alternatively, the wireless communication system may be a system that is a next-generation system of the 5G system. Here, an access network in the 5G system may be called a New Generation-Radio Access Network (NG-RAN).

[0032] Here, the base station 120 may be an evolved base station (eNB) used in a 4G system. Alternatively, the base station 120 may be a base station (gNB) using a centralized-distributed architecture in a 5G system. When the base station 120 uses a centralized-distributed architecture, it typically includes a central unit (CU) and at least two distributed units (DUs). The centralized unit is provided with protocol stacks for a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, and a Medium Access Control (MAC) layer. The distributed units are provided with a protocol stack for a physical (PHY) layer. The embodiments of the present disclosure do not limit the specific implementation of the base station 120.

[0033] A wireless connection can be established between the base station 120 and the user equipment 110 via a wireless air interface. In different embodiments, the wireless air interface can be a wireless air interface based on a fourth generation mobile communication network technology (4G) standard, or a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface can be a new air interface, or a wireless air interface based on a 5G next-generation mobile communication network technology standard.

[0034] In some embodiments, an end-to-end (E2E) connection may be established between user equipment 110, such as in vehicle-to-everything (V2X) scenarios, vehicle-to-vehicle (V2V) scenarios, vehicle-to-infrastructure (V2I) scenarios, and vehicle-to-pedestrian (V2P) scenarios.

[0035] Here, the user equipment may be considered as a terminal equipment in the following embodiments.

[0036] In some embodiments, the wireless communication system may further include a network management device 130 .

[0037] The multiple base stations 120 are respectively connected to a network management device 130. Here, the network management device 130 may be a core network device in a wireless communication system, for example, the network management device 130 may be a mobility management entity (MME) in an evolved packet core network (EPC). Alternatively, the network management device may be another core network device, such as a serving gateway (SGW), a public data network gateway (PGW), a policy and charging rules function (PCRF), or a home subscriber server (HSS). The implementation form of the network management device 130 is not limited to the embodiments of the present disclosure.

[0038] In order to facilitate the understanding of those skilled in the art, the embodiments of the present disclosure enumerate several embodiments to clearly explain the technical solutions of the embodiments of the present disclosure. Of course, those skilled in the art can understand that the several embodiments provided by the embodiments of the present disclosure can be implemented alone, can be implemented in combination with the methods of other embodiments in the embodiments of the present disclosure, and can be implemented alone or in combination with some methods in other related technologies, and the embodiments of the present disclosure are not limited thereto.

[0039] The two resource allocation methods, network dynamic scheduling and UE autonomous selection, can be configured by the network side through RRC signaling. The transmitting terminal transmits sidelink control information (SCI) on the physical sidelink control channel (PSCCH) and the second-stage SCI on the physical sidelink shared channel (PSSCH). The SCI includes the resource location of the transmission data and source and destination identifiers. After receiving the SCI, the target terminal determines whether to receive the corresponding data and which process it corresponds to based on the source UE and destination UE identifiers contained therein. In unicast connections, each UE corresponds to one destination identifier. In multicast, each UE belongs to one or more groups, and each group corresponds to one destination identifier. In broadcast, all UEs correspond to at least one destination identifier. For HARQ-enabled data packets, the target terminal performs HARQ-ACK feedback for the PSSCH on the Physical Sidelink Feedback Channel (PSFCH). PSFCH resources are configured at the granularity of a resource pool. Depending on the network implementation, some resource pools are configured with PSFCH resources and some are not. Resource pools without PSFCH resources cannot transmit HARQ-enabled data packets.

[0040] The MAC layer multiplexing function of the transmitting terminal loads data from multiple logical channels onto one transmission channel. That is, multiple MAC SDUs are multiplexed into one MAC PDU and transmitted over the physical layer channel. When there is data to be transmitted on multiple logical channels and the total amount of data exceeds the currently allowed transmission capacity, the problem of which logical channel should be given priority for transmission arises, which is called logical channel prioritization.

[0041] Each logical channel has a logical channel scheduling priority, which can be set by the network. The network sets the priority for connected UEs through dedicated signaling and for idle UEs through broadcasting. The network sets the priority for logical channels based on the QoS of the data transmitted by the logical channels. When a terminal obtains a scheduling opportunity, i.e., obtains resources for sidelink data transmission, the UE first selects a target UE and selects the UE corresponding to the sidelink logical channel with the highest priority as the target UE. The UE can then independently determine the service priority for each sidelink logical channel according to the status of each channel.

[0042] Carrier aggregation is a key technology for LTE-Advanced (LTE-A). Increasing the system transmission bandwidth is one of the most straightforward ways to meet the requirements for single-user peak rate and system capacity improvement. Therefore, the LTE-A system introduces a technology to increase transmission bandwidth, namely, carrier aggregation (CA). CA technology can aggregate multiple carriers (Component Carriers, CCs) to effectively improve uplink and downlink transmission speeds.

[0043] LTE V2X already supports sidelink carrier aggregation technology, and due to transmission and reception capability limitations, a terminal may only be able to receive sidelink services on one or a few carriers. LTE V2X does not introduce any enhancements to carrier selection / reselection to address terminal reception capability limitations. This is because LTE V2X only supports broadcast services and relies on high-level implementations to determine which services are of interest and receive data only on the carriers associated with those services.

[0044] In addition to broadcast and multicast services, the NR sidelink also supports unicast services. In the case of unicast services, if the transmission carrier supported by the transmitting terminal and the receiving carrier supported by the target terminal do not completely match, data packet loss may occur. If the carriers supported by the transmitting terminal and the carriers supported by the target terminal do not overlap at all, the transmitting terminal and the target terminal cannot perform unicast communication.

[0045] Therefore, how to coordinate between the transmitting terminal and the target terminal so that the transmitting terminal and the target terminal can improve the success rate of carrier aggregation transmission and reduce data packet loss has become an issue that needs to be resolved urgently.

[0046] As shown in FIG. 2 , an embodiment of the present disclosure provides a method for determining a target terminal, which is performed by a transmitting terminal, and the method includes: It includes step 201 of selecting a target terminal that satisfies at least a carrier aggregation transmission condition for the SL grant.

[0047] Here, the SL grant includes, but is not limited to, an SL grant associated with any aggregated carrier transmission in a carrier aggregation transmission scenario.

[0048] In one possible implementation, an SL grant may be associated with one carrier.

[0049] The transmitting terminal can select a target terminal based on the SL grant and perform SL-based carrier aggregation transmission with the target terminal.

[0050] Here, the target terminal may be the destination of the data transmission, and may be characterized by a destination address.

[0051] The carrier aggregation transmission condition may be determined based on at least one of a carrier associated with the SL grant, a carrier transmission capability of the target terminal, a transmission attribute associated with the target terminal, and the like.

[0052] If the carrier aggregation transmission conditions are met, the target terminal can receive data via the carrier associated with the SL grant, thereby reducing packet loss and improving the reliability of data communication.

[0053] In one embodiment, the step of selecting a target terminal that satisfies at least a carrier aggregation transmission condition includes: A logical channel priority (LCP) processing process includes selecting the target terminal that meets at least the carrier aggregation transmission requirements.

[0054] During the LCP process, the MAC layer multiplexing function of the transmitting terminal can load data from multiple logical channels onto a single transmission channel based on the logical channel priority. That is, multiple MAC SDUs are multiplexed into a single MAC PDU and transmitted over a physical layer channel. The transmitting terminal can determine the target terminal during this process.

[0055] In one possible implementation, selecting target terminals that satisfy at least the carrier aggregation transmission condition includes selecting target terminals that satisfy at least the carrier aggregation transmission condition to perform carrier aggregation transmission.

[0056] In one possible implementation, satisfying the carrier aggregation transmission condition is one of multiple conditions for the transmitting terminal to select a target terminal, and the target terminal must also satisfy other conditions, such as, for example, if SL DRX is applicable to the target terminal, the duration of the SL grant is within the activation period of the target terminal.

[0057] As shown in FIG. 3 , an embodiment of the present disclosure provides a method for determining a target terminal, which is performed by a transmitting terminal, and the method includes: The method includes a step 301 of selecting the target terminal that satisfies a carrier aggregation transmission condition and satisfies a first transmission condition and / or a second transmission condition.

[0058] The first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal.

[0059] The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

[0060] In the first transmission condition, when the transmitting terminal obtains an SL grant, if the target terminal is configured with SL DRX, the transmitting terminal must select a target terminal that is within the SL activation period.

[0061] In one possible implementation, if the target terminal is not configured with SL DRX, the first transmission condition may be ignored.

[0062] In the second transmission condition, when the transmitting terminal obtains the SL grant, the transmitting terminal may select a target terminal having at least one of the highest priority MAC CE and / or highest priority logical channel among the logical channels and MAC control elements (if any) that satisfy the third transmission condition.

[0063] In one possible implementation, the target terminal must simultaneously satisfy the carrier aggregation transmission condition, the first transmission condition, and the second transmission condition.

[0064] In one possible implementation, the target terminal must simultaneously satisfy the carrier aggregation transmission condition and the second transmission condition.

[0065] Exemplarily, if the target terminal is not configured with SL DRX, that is, if the target terminal is always in a channel monitoring state, the target terminal can only satisfy the carrier aggregation transmission condition and the second transmission condition.

[0066] In one embodiment, the third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit a MAC SDU with a configured grant type 1; If a list of authorized use grants is configured, said list includes a configuration grant identifier associated with said SL grant; and If there is no PSFCH resource associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is disabled.

[0067] SBj represents the number of tokens currently available in the token bucket maintained by the jth logical channel corresponding to a target terminal.

[0068] Resources related to configuration grant type 1 are resources that a network device such as a base station configures for a terminal for an SL grant through an instruction such as RRC signaling, and once this resource configuration is activated, the terminal can directly use this resource without any additional activation (such as activation via PDCCH / DCI).

[0069] The resources associated with the configuration grant type 2 are a resource pool defined by a network device such as a base station through instructions such as RRC signaling, and must be activated or deactivated by a physical downlink control channel (PDCCH). The terminal can use these resources only after activation.

[0070] In one possible implementation, whether MAC SDUs of a logical channel are allowed to be transmitted with configured grant type 1 may be determined through the field sl-ConfiguredGrantType1Allowed. For example, if the value of sl-ConfiguredGrantType1Allowed is true, it may be determined that MAC SDUs of a logical channel are allowed to be transmitted with configured grant type 1.

[0071] In one possible implementation, the list of allowed configuration grants may be represented by sl-AllowedCG-List. If the list of allowed configuration grants is configured, the list of allowed configuration grants must include the configuration grant identifier associated with the SL grant.

[0072] The target terminal must provide HARQ-ACK feedback for PSSCH resources on the PSFCH. If there are no PSFCH resources associated with the SL grant, the hybrid automatic repeat request (HARQ) attribute associated with the logical channel must be disabled.

[0073] In one embodiment, the carrier aggregation transmission conditions include: The target terminal is associated with unicast, and the target terminal supports data reception on a carrier associated with the SL grant.

[0074] If the target terminal is associated with unicast, the transmitting terminal may select the target terminal depending on whether data reception is supported on the carrier associated with the SL grant.

[0075] In one possible implementation, the target terminal may indicate its reception capabilities for the carrier associated with the SL grant through capability indication information.

[0076] In one possible implementation, the target terminal can transmit capability indication information to at least one of the transmitting terminal and the network side (including the core network and / or the base station). The transmitting terminal can acquire and receive the capability indication information from the target terminal or can acquire and receive the capability indication information from the network side.

[0077] In one possible implementation, if the target terminal is associated with unicast, supports data reception on the carrier associated with the SL grant, and satisfies the first transmission condition and / or the second transmission condition, the transmitting terminal can determine the target terminal as the target terminal corresponding to the SL grant. The first transmission condition and the second transmission condition are as described above and will not be described in detail here.

[0078] In one embodiment, the carrier aggregation transmission conditions include: The target terminal is associated with multicast and / or groupcast, and transmission attributes associated with the target terminal include supporting the carrier aggregation transmission.

[0079] If the target terminal is associated with multicast and / or groupcast, the transmitting terminal can select the target terminal through the transmission profile (Tx Profile).

[0080] In one possible implementation, the Tx Profile may carry compatibility indication information indicating whether the terminal device is compatible with carrier aggregation transmission. If the transmission attributes associated with the target terminal support carrier aggregation transmission, it means that the transmission attributes associated with the target terminal are compatible with carrier aggregation.

[0081] In one possible implementation, the Tx Profile may further indicate the version (release) of the terminal device, etc.

[0082] In one possible implementation, the Tx Profile may be associated with an identifier of the target terminal, such as a Destination ID.

[0083] In one possible implementation, if a target terminal is associated with multicast and / or groupcast, and a transmission attribute associated with the target terminal supports the carrier aggregation transmission, and satisfies a first transmission condition and / or a second transmission condition, the transmitting terminal can determine the target terminal as a target terminal corresponding to the SL grant. The first transmission condition and the second transmission condition are as described above and will not be described in detail here.

[0084] In one embodiment, the carrier aggregation transmission conditions include: the target terminal is associated with a multicast and / or a groupcast, and the target terminal does not have an associated transmission attribute, and the target terminal satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

[0085] If the target terminal is associated with a multicast and / or groupcast and the target terminal does not have a transmission profile, the transmitting terminal can select the target terminal according to the first transmission condition and / or the second transmission condition.

[0086] In the first transmission condition, when the transmitting terminal obtains an SL grant, if the target terminal is configured with SL DRX, the transmitting terminal must select a target terminal that is within the SL activation period.

[0087] In one possible implementation, if the target terminal is not configured with SL DRX, the first transmission condition may be ignored.

[0088] In the second transmission condition, when the transmitting terminal obtains the SL grant, the transmitting terminal may select a target terminal having at least one of the highest priority MAC CE and / or highest priority logical channel among the logical channels and MAC control elements (if any) that satisfy the third transmission condition.

[0089] In one possible implementation, the target terminal must simultaneously satisfy the first and second transmission conditions.

[0090] In one possible implementation, the target terminal must meet a second transmission condition.

[0091] Exemplarily, if the target terminal is not configured with SL DRX, that is, if the target terminal is always in a channel monitoring state, the target terminal can only satisfy the second transmission condition.

[0092] In one embodiment, the third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit a MAC SDU with a configured grant type 1; If a list of authorized use grants is configured, said list includes a configuration grant identifier associated with said SL grant; and If there is no PSFCH resource associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is disabled.

[0093] SBj represents the number of tokens currently available in the token bucket maintained by the jth logical channel corresponding to a target terminal.

[0094] Resources related to configuration grant type 1 are resources that a network device such as a base station configures for a terminal for an SL grant through an instruction such as RRC signaling, and once this resource configuration is activated, the terminal can directly use this resource without any additional activation (such as activation via PDCCH / DCI).

[0095] The resources associated with the configuration grant type 2 are a resource pool defined by a network device such as a base station through instructions such as RRC signaling, and must be activated or deactivated by a physical downlink control channel (PDCCH). The terminal can use these resources only after activation.

[0096] In one possible implementation, whether MAC SDUs of the logical channel are allowed to be transmitted with configured grant type 1 may be determined through a field sl-ConfiguredGrantType1Allowed. For example, if the value of sl-ConfiguredGrantType1Allowed is true, it may be determined that MAC SDUs of the logical channel are allowed to be transmitted with configured grant type 1.

[0097] In one possible implementation, the list of allowed configuration grants may be represented by sl-AllowedCG-List. If the list of allowed configuration grants is configured, the list of allowed configuration grants must include the configuration grant identifier associated with the SL grant.

[0098] The target terminal must provide HARQ-ACK feedback for PSSCH resources on the PSFCH. If there are no PSFCH resources associated with the SL grant, the hybrid automatic repeat request (HARQ) attribute associated with the logical channel must be disabled.

[0099] As shown in FIG. 4 , an embodiment of the present disclosure provides a method for determining a target terminal, which is performed by a transmitting terminal, and the method includes: The method further includes step 401 of discarding the SL grant in response to failure to select the target terminal that satisfies the carrier aggregation transmission condition and the first transmission condition and / or the second transmission condition.

[0100] None of the target terminals associated with the unicast support reception on the carrier associated with the sidelink grant; The Tx profile associated with the target terminal associated with the multicast and / or broadcast is not compatible with carrier aggregation; and The target terminal associated with the multicast and / or broadcast does not have a Tx profile and does not satisfy the first transmission condition and / or the second transmission condition; If all of the above are satisfied, it can be determined that the transmitting terminal has not selected the target terminal for the SL grant.

[0101] For an SL grant, if the transmitting terminal fails to select a target terminal, the transmitting terminal may ignore this SL grant.

[0102] To further illustrate embodiments of the present disclosure, specific examples are provided below.

[0103] During the LCP process, the transmitting terminal shall consider the receiving capabilities of the target terminal on the carrier associated with the sidelink grant when selecting the target terminal / address, which may include at least one of the following:

[0104] Scheme 1 (Carrier Aggregation Transmission Conditions): The target terminal / address selected by the transmitting terminal during the LCP process must support reception on the carrier associated with the sidelink grant.

[0105] Illustratively, the transmitting terminal determines the target terminal / address by simultaneously satisfying the following three conditions: condition 1 (carrier aggregation transmission condition), condition 2 (first transmission condition), and / or condition 3 (second transmission condition).

[0106] Condition 1 (Carrier Aggregation Transmission Condition): The target terminal / address supports reception on the carrier associated with the sidelink grant. a) The target terminal / address is associated with unicast only and determines whether the target terminal / address supports reception on the carrier associated with the sidelink grant.

[0107] Condition 2 (first transmission condition): If SL DRX is applicable to a target terminal / address, the sidelink grant is within the activation period of the target terminal / address.

[0108] Condition 3 (second transmission condition): The target terminal / address is: a) There is SL data to transmit; b) SBj exists in any logical channel and SBj>0; c) if the sidelink grant is of configured grant type 1, a sl-configuredGrantType1Allowed associated with the logical channel is set to allow transmitting MAC SDUs of the logical channel with configured grant type 1; d) if a list of authorized configuration grants is configured, said list includes a configuration grant identifier associated with said sidelink grant; e) if there are no PSFCH resources associated with the sidelink grant, the HARQ attribute of the logical channel is HARQ-disabled; Among all logical channels and MAC CEs that satisfy the condition, there is at least one MAC CE or logical channel with the highest priority.

[0109] Method 2: The Tx profile associated with the target terminal / address selected by the transmitting terminal during the LCP process is compatible with carrier aggregation.

[0110] Example: The transmitting terminal determines the target terminal / address by simultaneously satisfying the following three conditions: condition 1 (carrier aggregation transmission condition), condition 2 (first transmission condition), and / or condition 3 (second transmission condition).

[0111] Condition 1 (carrier aggregation transmission condition): The Tx profile associated with the target terminal / address branch is compatible with carrier aggregation. a) The target terminal / address is associated with multicast or broadcast only, the target terminal / address has an associated Tx profile, and the Tx profile is used to indicate whether it is compatible with carrier aggregation; determine whether the Tx profile associated with the target terminal / address is compatible with carrier aggregation. b) The target terminal / address is associated with multicast or broadcast only, the target terminal / address does not have an associated Tx profile, the Tx profile is used to indicate whether it is compatible with carrier aggregation, and only determines whether the target terminal / address satisfies condition 2 (first transmission condition) and / or condition 3 (second transmission condition).

[0112] Condition 2 (first transmission condition): If SL DRX is applicable to a target terminal / address, the sidelink grant is within the activation period of the target terminal / address.

[0113] Condition 3 (second transmission condition): The target terminal / address is: a) There is SL data to transmit; b) SBj exists in any logical channel and SBj>0; c) if the sidelink grant is of configured grant type 1, a sl-configuredGrantType1Allowed associated with the logical channel is set to allow transmitting MAC SDUs of the logical channel with configured grant type 1; d) if a list of authorized configuration grants is configured, said list includes a configuration grant identifier associated with said sidelink grant; e) if there is no PSFCH resource associated with the sidelink grant, the HARQ attribute of the logical channel is HARQ-disabled; Among all logical channels and MAC CEs that satisfy the condition, there is at least one MAC CE or logical channel with the highest priority.

[0114] Method 3: If none of the target terminals / addresses associated with the unicast transmission support reception on the carrier associated with the sidelink grant and the Tx profile associated with the target terminals / addresses associated with the multicast / broadcast transmission is not compatible with carrier aggregation, the transmitting terminal ignores the sidelink grant.

[0115] As shown in FIG. 5 , an embodiment of the present disclosure provides an apparatus 100 for determining a target terminal located at a transmitting terminal, the apparatus including: The method comprises a processing module 110 configured to select target terminals that meet at least carrier aggregation transmission conditions for a sidelink (SL) grant.

[0116] In one embodiment, the carrier aggregation transmission conditions include: The target terminal is associated with unicast, and the target terminal supports data reception on a carrier associated with the SL grant.

[0117] In one embodiment, the carrier aggregation transmission conditions include: The target terminal is associated with multicast and / or groupcast, and transmission attributes associated with the target terminal include supporting the carrier aggregation transmission.

[0118] In one embodiment, the carrier aggregation transmission conditions include: the target terminal is associated with a multicast and / or a groupcast, and the target terminal does not have an associated transmission attribute, and the target terminal satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

[0119] In one embodiment, the third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit a medium access control service data unit (MAC SDU) with a configured grant type 1; If a list of authorized use grants is configured, said list includes a configuration grant identifier associated with said SL grant; and If there are no physical sidelink feedback channel (PSFCH) resources associated with the SL grant, a hybrid automatic repeat request (HARQ) attribute associated with the logical channel is disabled.

[0120] In one embodiment, the processing module 110 specifically includes: configured to select the target terminal that satisfies a carrier aggregation transmission condition and also satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

[0121] In one embodiment, the third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit MAC SDUs with a configured grant type 1; If a list of authorized use grants is configured, said list includes a configuration grant identifier associated with said SL grant; and If there is no PSFCH resource associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is disabled.

[0122] In one embodiment, the processing module 110 further comprises: The SL grant is discarded in response to failure to select the target terminal that satisfies a carrier aggregation transmission condition and also satisfies the first transmission condition and / or the second transmission condition.

[0123] In one embodiment, the processing module 110 specifically includes: A logical channel priority (LCP) processing process is configured to select the target terminal that satisfies at least the carrier aggregation transmission condition.

[0124] An embodiment of the present disclosure provides a communication device, the communication device comprising: a processor, and a memory for storing instructions executable by a processor; The processor, when executing the executable instructions, is configured to implement the method for determining a target terminal described in any embodiment of the present disclosure.

[0125] In one embodiment, the communication device includes, but is not limited to, at least one of a UE and a network device, such as a core network device or an access network device, where the access network device may include a base station, and the core network may include an AMF and an SMF.

[0126] The processor may include various types of storage media that are non-transitory computer storage media capable of retaining stored information even after the user equipment loses power.

[0127] The processor may be connected to the memory via a bus or the like and used to read an executable program stored in the memory, such as at least one of the methods shown in FIGS.

[0128] An embodiment of the present disclosure further provides a computer storage medium storing a computer-executable program, which, when executed by a processor, realizes the method for determining a target terminal according to any embodiment of the present disclosure, such as at least one of the methods illustrated in FIGS.

[0129] Regarding the devices or storage media in the above embodiments, the specific manner in which each module performs an operation is described in detail in the embodiments relating to the method, and will not be described in detail here.

[0130] 6 is a block diagram illustrating a user equipment 3000 according to an exemplary embodiment. For example, the user equipment 3000 may be a mobile phone, a computer, a digital broadcast user equipment, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0131] As shown in FIG. 6 , the user equipment 3000 may include one or more of a processing component 3002, a memory 3004, a power component 3006, a multimedia component 3008, an audio component 3010, an input / output (I / O) interface 3012, a sensor component 3014, and a communication component 3016.

[0132] The processing component 3002 generally controls the overall operation of the user device 3000, such as operations related to display, phone calls, data communications, camera operation, and recording operations. The processing component 3002 may include one or more processors 3020 that execute instructions to complete all or some of the steps of the above methods. Furthermore, the processing component 3002 may include one or more modules to facilitate interaction between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate interaction between the multimedia component 3008 and the processing component 3002.

[0133] Memory 3004 is configured to store various types of data to support operation on user equipment 3000. Examples of this data include instructions for any applications or methods to operate on user equipment 3000, contact data, phone book data, messages, pictures, videos, etc. Memory 3004 may be implemented by any type of volatile or non-volatile storage device, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk, or a combination thereof.

[0134] Power component 3006 provides power to the various components of user equipment 3000. Power component 3006 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for user equipment 3000.

[0135] The multimedia component 3008 includes a screen that provides an output interface between the user device 3000 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors for detecting touches, slides, and gestures on the touch panel. The touch sensors can detect not only the boundaries of a touch or slide motion but also the duration and pressure associated with the touch or slide motion. In some embodiments, the multimedia component 3008 includes one front camera and / or one rear camera. When the user device 3000 is in an operating mode, such as a photo mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera may have a fixed optical lens system or may have a focal length and optical zoom capability.

[0136] The audio component 3010 is configured to output and / or input audio signals. For example, the audio component 3010 may include a microphone (MIC) configured to receive external audio signals when the user equipment 3000 is in an operational mode such as a phone call mode, a recording mode, or a voice recognition mode. The received audio signals may be further stored in the memory 3004 or transmitted via the communication component 3016. In some embodiments, the audio component 3010 further includes a speaker for outputting audio signals.

[0137] The I / O interface 812 provides an interface between the processing component 3002 and a peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0138] The sensor component 3014 includes one or more sensors and is used to provide various status assessments to the user device 3000. For example, the sensor component 3014 can detect the on / off state of the user device 3000 and the relative positioning of components, such as the display and keypad of the user device 3000. The sensor component 3014 can also detect changes in the position of the user device 3000 or one of the components of the user device 3000, the presence or absence of contact between the user and the user device 3000, the orientation or acceleration / deceleration of the user device 3000, and temperature changes of the user device 3000. The sensor component 3014 can include a proximity sensor configured to detect the presence of a nearby object in the absence of physical contact. The sensor component 3014 may further include an optical sensor, such as a CMOS or CCD image sensor for use in imaging applications. In some embodiments, the sensor component 3014 may further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0139] The communication component 3016 is configured to facilitate wired or wireless communication between the user equipment 3000 and other devices. The user equipment 3000 can access a wireless network based on a communication standard, such as WiFi, 4G, or 5G, or a combination thereof. In one exemplary embodiment, the communication component 3016 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 3016 further includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0140] In an exemplary embodiment, the user equipment 3000 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements and configured to perform the above methods.

[0141] In an exemplary embodiment, a non-transitory computer-readable storage medium containing instructions, such as a memory 3004 containing instructions, is further provided, which can be executed by the processor 3020 of the user equipment 3000 to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0142] As shown in FIG. 7, one embodiment of the present disclosure illustrates the structure of a base station. For example, base station 900 may be provided as a network-side device. Referring to FIG. 7, base station 900 includes a processing component 922 further including one or more processors, and memory resources represented by memory 932 for storing instructions executable by processing component 922, such as application programs. The application programs stored in memory 932 may include one or more modules, each corresponding to a set of instructions. Furthermore, processing component 922 is configured to execute instructions to perform any of the above-described methods applied to the base station.

[0143] The base station 900 may further include a power component 926 configured to perform power management of the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to a network, and an input / output (I / O) interface 958. The base station 900 may operate based on an operating system stored in the memory 932, such as Windows Server®, Mac OS X®, Unix®, Linux®, FreeBSD®, etc.

[0144] Other embodiments of the present invention will be readily apparent to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any modifications, uses, or adaptations of the present invention that follow the general principles of the present invention and include common general knowledge or ordinary technical means in the art that are not disclosed in this disclosure. It is to be understood that the specification and examples are exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0145] It should be understood, however, that the present invention is not limited to the exact construction described above and illustrated in the drawings, and various modifications and changes can be made thereto without departing from the scope thereof, which is limited only by the appended claims.

Claims

1. 1. A method for determining a target terminal executed by a transmitting terminal, comprising: Selecting a target terminal that satisfies at least a carrier aggregation transmission condition for a side link (SL) grant.

10. A method for determining a target terminal, comprising:

2. The carrier aggregation transmission conditions include: The target terminal is associated with a unicast carrier, and the target terminal supports data reception on a carrier associated with the SL grant.

2. The method of claim 1 .

3. The carrier aggregation transmission conditions include: The target terminal is associated with multicast and / or groupcast, and transmission attributes associated with the target terminal include supporting the carrier aggregation transmission.

2. The method of claim 1 .

4. The carrier aggregation transmission conditions include: The target terminal is associated with a multicast and / or a groupcast, and the target terminal does not have an associated transmission attribute, and the target terminal satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

2. The method of claim 1 .

5. The third transmission condition includes: There is SL data to transmit, There is a number SBj of tokens available for any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit medium access control service data units (MAC SDUs) with configured grant type 1; If a list of authorized configuration grants is configured, the list includes a configuration grant identifier associated with the SL grant; and If there are no Physical Sidelink Feedback Channel (PSFCH) resources associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is disabled.

5. The method of claim 4.

6. The step of selecting a target terminal that satisfies at least a carrier aggregation transmission condition includes: selecting the target terminal that satisfies a carrier aggregation transmission condition and also satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition. The method according to any one of claims 1 to 3.

7. The third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit MAC SDUs with configured grant type 1; If a list of authorized configuration grants is configured, the list includes a configuration grant identifier associated with the SL grant; and If there is no PSFCH resource associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is invalid.

7. The method of claim 6.

8. The method further includes discarding the SL grant in response to failure to select the target terminal that satisfies a carrier aggregation transmission condition and also satisfies a first transmission condition and / or a second transmission condition.

7. The method of claim 6.

9. The step of selecting a target terminal that satisfies at least a carrier aggregation transmission condition includes: In a logical channel priority (LCP) processing process, the target terminal that satisfies at least the carrier aggregation transmission condition is selected. The method according to any one of claims 1 to 5.

10. An apparatus for determining a target terminal to be located at a transmitting terminal, comprising: a processing module configured to select target terminals that meet at least carrier aggregation transmission conditions for a side link (SL) grant; 10. An apparatus for determining a target terminal, comprising:

11. The carrier aggregation transmission conditions include: The target terminal is associated with a unicast, and the target terminal supports data reception on a carrier associated with the SL grant.

11. The device of claim 10.

12. The carrier aggregation transmission conditions include: The target terminal is associated with multicast and / or groupcast, and transmission attributes associated with the target terminal include supporting the carrier aggregation transmission.

11. The device of claim 10.

13. The carrier aggregation transmission conditions include: The target terminal is associated with a multicast and / or a groupcast, and the target terminal does not have an associated transmission attribute, and the target terminal satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

11. The device of claim 10.

14. The third transmission condition includes: There is SL data to transmit, There is a number SBj of tokens available for any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit medium access control service data units (MAC SDUs) with configured grant type 1; If a list of authorized configuration grants is configured, the list includes a configuration grant identifier associated with the SL grant; and If there are no Physical Sidelink Feedback Channel (PSFCH) resources associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is disabled.

14. The device of claim 13.

15. The processing module further comprises: configured to select the target terminal that satisfies a carrier aggregation transmission condition and also satisfies a first transmission condition and / or a second transmission condition; the first transmission condition includes that the SL discontinuous reception (DRX) is applicable to the target terminal and the duration of the SL grant is within an activation period of the target terminal; The second transmission condition includes that the target terminal has at least one MAC CE with the highest priority and / or has at least one logical channel with the highest priority among the logical channels and medium access control elements (MAC CEs) that satisfy a third transmission condition.

13. The device according to any one of claims 10 to 12.

16. The third transmission condition includes: There is SL data to transmit, SBj exists in any of the logical channels, and SBj is greater than 0; If the SL grant is a configured grant type 1, the logical channel is configured to be allowed to transmit MAC SDUs with configured grant type 1; a list of authorized configuration grants is configured, said list including a configuration grant identifier associated with said SL grant; and If there is no PSFCH resource associated with the SL grant, a Hybrid Automatic Repeat Request (HARQ) attribute associated with the logical channel is invalid.

16. The device of claim 15.

17. The processing module further comprises: and discarding the SL grant in response to failure to select the target terminal that satisfies a carrier aggregation transmission condition and also satisfies a first transmission condition and / or a second transmission condition.

16. The device of claim 15.

18. The processing module further comprises: In a logical channel priority (LCP) processing process, the target terminal is configured to select the target terminal that satisfies at least the carrier aggregation transmission condition.

15. Apparatus according to any one of claims 10 to 14.

19. 1. A communication device, comprising: a processor, and a memory for storing instructions executable by said processor; The processor, when executing the executable instructions, is configured to implement the method for determining a target terminal according to any one of claims 1 to 9. A communication device characterized by:

20. 1. A computer storage medium, comprising: A computer-executable program is stored, and when the executable program is executed by a processor, the method for determining a target terminal according to any one of claims 1 to 9 is realized. A computer storage medium comprising:

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