Sl service transmission processing method and apparatus, terminal, and storage medium

Abstract

The application discloses a SL service transmission processing method and device, a terminal and a storage medium, and belongs to the technical field of communication. The SL service transmission processing method provided by the application comprises the following steps: a terminal determines at least one carrier according to transmission information corresponding to a SL service; and the terminal determines a candidate carrier according to available carriers in the at least one carrier; wherein the at least one carrier comprises a first carrier and / or a second carrier, the first carrier is a SL carrier in an unlicensed frequency band, and the second carrier is a SL carrier in a licensed frequency band.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and in particular relates to an SL service transmission processing method, apparatus, terminal and storage medium. Background Technology

[0002] With the development of communication technology, the introduction of unlicensed frequency band communication is discussed in sidelink (SL) systems. After introducing unlicensed frequency band communication, various communication scenarios may arise, such as communication scenarios with only unlicensed frequency band carriers, and communication scenarios where unlicensed frequency band carriers and licensed frequency bands coexist. How to select candidate carriers after introducing unlicensed frequency band communication becomes a pressing problem to be solved. Summary of the Invention

[0003] This application provides an SL service transmission processing method, apparatus, terminal, and storage medium, which can determine the selection of candidate carriers after introducing unlicensed frequency band communication, so that the terminal can communicate on a suitable carrier.

[0004] Firstly, a method for processing SL service transmission is provided, including:

[0005] The terminal determines at least one carrier based on the transmission information corresponding to the SL service;

[0006] The terminal determines a candidate carrier based on the available carriers among the at least one carrier;

[0007] Wherein, the at least one carrier includes a first carrier and / or a second carrier, wherein the first carrier is an SL carrier in an unlicensed frequency band and the second carrier is an SL carrier in a licensed frequency band.

[0008] Secondly, an SL service transmission processing apparatus is provided, characterized in that it includes:

[0009] The first determining module is used to determine at least one carrier based on the transmission information corresponding to the SL service.

[0010] The second determining module is used to determine candidate carriers based on available carriers among the at least one carrier;

[0011] Wherein, the at least one carrier includes a first carrier and / or a second carrier, wherein the first carrier is an SL carrier in an unlicensed frequency band and the second carrier is an SL carrier in a licensed frequency band.

[0012] Thirdly, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method described in the first aspect.

[0013] Fourthly, a terminal is provided, including a processor and a communication interface, wherein...

[0014] The processor is configured to determine at least one carrier based on the transmission information corresponding to the SL service; and to determine candidate carriers based on the available carriers among the at least one carrier; wherein the at least one carrier includes a first carrier and / or a second carrier, the first carrier being an SL carrier in an unlicensed frequency band, and the second carrier being an SL carrier in a licensed frequency band.

[0015] Fifthly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0016] In a sixth aspect, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the steps of the method described in the first aspect.

[0017] In a seventh aspect, a computer program / program product is provided, the computer program / program product being stored in a non-transient storage medium, the computer program / program product being executed by at least one processor to implement the method as described in the first aspect.

[0018] This application embodiment determines at least one carrier based on the transmission information corresponding to the SL service by a terminal; the terminal then determines candidate carriers based on available carriers among the at least one carrier; wherein the at least one carrier includes a first carrier and / or a second carrier, the first carrier being an SL carrier in an unlicensed frequency band, and the second carrier being an SL carrier in a licensed frequency band. Thus, by clearly defining the beam selection mechanism for SL carriers in unlicensed and licensed frequency bands, the terminal can communicate on appropriate carriers, ensuring communication performance. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a network system that can be applied to the embodiments of this application;

[0020] Figure 2 This is a flowchart of an SL service transmission processing method provided in an embodiment of this application;

[0021] Figure 3 This is a structural diagram of an SL service transmission processing apparatus provided in an embodiment of this application;

[0022] Figure 4 This is a structural diagram of a communication device provided in an embodiment of this application;

[0023] Figure 5This is a structural diagram of a terminal provided in an embodiment of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used in the systems and radio technologies mentioned above, as well as in other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description. These technologies can also be applied to applications beyond NR systems, such as 6th Generation (6G) communication systems.

[0027] Figure 1 This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home device (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, game consoles, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. The network-side device 12 can be a base station or core network equipment. The base station can be referred to as Node B, Evolved Node B, Access Point, Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), B Node, Evolved B Node (eNB), Home B Node, Home Evolved B Node, WLAN Access Point, WiFi Node, Transmitting Receiving Point (TRP), or any other suitable term in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that this application embodiment only uses a base station in an NR system as an example, but does not limit the specific type of base station.

[0028] For ease of understanding, the following describes some aspects of the embodiments of this application:

[0029] I. Introduction to SL

[0030] The LTE system supports SL, which is used for direct data transmission between terminals without going through network-side equipment. The SL link interface is also known as the PC5 interface.

[0031] The LTE sidelink is designed for specific public safety applications (such as emergency communications in disaster areas like fire scenes or earthquakes) or vehicle-to-everything (V2X) communications. V2X communications include various services, such as basic safety communications, advanced (autonomous) driving, platooning, and sensor extensions. Because the LTE sidelink only supports broadcast communications, it is primarily used for basic safety communications. Advanced V2X services with stringent Quality of Service (QoS) requirements regarding latency and reliability will be supported through the NR sidelink.

[0032] 5G NR systems can operate on frequency bands above 6GHz that LTE does not support, allowing for greater bandwidth. Currently, NR sidelink transmission supports broadcast, multicast, and unicast transmission. Unicast, as the name suggests, is a one-to-one transmission. Multicast is a one-to-many transmission. Broadcast is also a one-to-many transmission, but it does not have the concept of UEs belonging to the same group.

[0033] Compared to LTE / NR Sidelink broadcast communication, NR Sidelink unicast and multicast communication introduces support for the physical layer Hybrid Automatic Repeat reQuest (HARQ) feedback mechanism.

[0034] II. Resource Allocation Model

[0035] Sidelink UE resource allocation modes are divided into two categories:

[0036] 1. Base station scheduling mode (Mode 1): The base station schedules SL resources for UE to use for SL transmission. This is controlled by the network-side equipment (base station) and resources are allocated to each UE.

[0037] 2. Terminal Autonomous Mode (Mode 2): Terminal determination, that is, the base station does not schedule SL resources configured by the base station / network side equipment or SL transmission resources within the pre-configured SL resources, and each terminal autonomously selects resources.

[0038] III. Unlicensed NR bands

[0039] In future communication systems, unlicensed bands can supplement licensed bands to help operators expand service capacity. To maintain consistency with NR deployments and maximize NR-based unlicensed access, unlicensed bands can operate in the 5GHz, 37GHz, and 60GHz bands. Because unlicensed bands are shared by various radio access technologies (RATs), such as WiFi, radar, and LTE-Licensed-Assisted Access (LTE-LAA), in some countries or regions, their use must comply with regulations to ensure fair access for all devices. These regulations may include rules such as Listen Before Talk (LBT) and Maximum Channel Occupancy Time (MCOT).

[0040] IV. LBT

[0041] Before transmitting a signal, a transmitter operating in an unlicensed frequency band needs to monitor whether the band (which can be identified by the center frequency and bandwidth) is occupied. If it is not occupied, the transmitter can transmit the signal in that band.

[0042] The SL service transmission processing method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0043] Please see Figure 2 , Figure 2 This is a flowchart of an SL service transmission processing method provided in an embodiment of this application, such as... Figure 2 As shown, it includes the following steps:

[0044] Step 201: The terminal determines at least one carrier based on the transmission information corresponding to the SL service;

[0045] In this embodiment of the application, the aforementioned SL service can be understood as a service to be transmitted. For example, if an SL service arrives at the upper layer of the UE, and the upper layer provides transmission information corresponding to the SL service, then at least one carrier can be determined based on the transmission information provided by the upper layer. The upper layer can be referred to as "upper layers," for example, the layer above the access layer is collectively referred to as the upper layer.

[0046] It should be understood that the above-mentioned SL service can be understood as a new SL service or as a retransmitted SL service.

[0047] Step 202: The terminal determines a candidate carrier based on the available carriers among the at least one carrier;

[0048] Wherein, the at least one carrier includes a first carrier and / or a second carrier, wherein the first carrier is an SL carrier in an unlicensed frequency band and the second carrier is an SL carrier in a licensed frequency band.

[0049] In this embodiment, the aforementioned unlicensed frequency band can be understood as an unlicensed spectrum, also known as a shared frequency band. It refers to a short-range wireless transmission frequency band similar to Wi-Fi. The aforementioned first carrier may also include or be replaced by an intelligent transportation spectrum.

[0050] This application embodiment determines at least one carrier based on the transmission information corresponding to the SL service by a terminal; the terminal then determines candidate carriers based on available carriers among the at least one carrier; wherein the at least one carrier includes a first carrier and / or a second carrier, the first carrier being an SL carrier in an unlicensed frequency band, and the second carrier being an SL carrier in a licensed frequency band. Thus, by clearly defining the beam selection mechanism for SL carriers in unlicensed and licensed frequency bands, the terminal can communicate on appropriate carriers, ensuring communication performance.

[0051] Optionally, in some embodiments, the transmission information includes at least one of a carrier list and a transmission mode.

[0052] In this embodiment, the carrier list may include at least one carrier frequency point, and the transmission mode may be understood or replaced by transmission type or transmission format. The transmission mode may include at least one of sidelink transmission in licensed frequency bands and sidelink transmission in unlicensed frequency bands.

[0053] Optionally, the transmission mode satisfies at least one of the following:

[0054] Different transmission modes are carried through the transmit profile (TX profile) provided by the upper layer of the terminal;

[0055] Different transmission modes are associated with at least one carrier frequency.

[0056] Different transmission modes are associated with at least one service type;

[0057] Different transmission modes are associated with at least one application identifier;

[0058] Different transmission modes are associated with at least one Destination L2 ID;

[0059] Different transmission modes are associated with at least one set of quality of service parameters.

[0060] In this application, the association of different transmission modes with at least one carrier frequency point can be understood to include at least one of the following association relationships:

[0061] A transmission mode is associated with a frequency carrier.

[0062] A transmission mode is associated with at least two frequency carriers;

[0063] At least two transmission modes are associated with a single frequency carrier.

[0064] Furthermore, the relationship between transmission mode and service type, application identifier, destination layer 2 identifier and quality of service parameters is similar to the relationship between transmission mode and carrier frequency point mentioned above. For details, please refer to the description of the relationship between transmission mode and carrier frequency point, which will not be repeated here.

[0065] It should be understood that service type or application identifier are higher-layer concepts. SL services are distinguished at the higher layer through different service types or application identifiers. Destination Layer 2 identifier is an access layer concept, and SL services are characterized at the access layer through different Destination L2 IDs. The aforementioned quality of service parameters can include one or more dimensions of QoS parameters such as latency, reliability, and priority. In other words, quality of service parameters can be a single-dimensional QoS parameter or a combination of multiple-dimensional QoS parameters.

[0066] It should be noted that the aforementioned available carriers can be some or all of the carriers in at least one carrier. For example, available carriers may include at least one of the following: N1 first carriers and N2 second carriers. The methods for determining candidate carriers differ in different scenarios, which will be explained in detail below.

[0067] In some embodiments, when the available carriers are N1 first carriers, the terminal determines the candidate carrier based on the available carriers among the at least one carrier by:

[0068] The terminal determines the target threshold;

[0069] The terminal determines the first carrier among the N1 first carriers whose channel occupancy time is greater than or equal to the target threshold as a candidate carrier;

[0070] Where N1 is a positive integer.

[0071] Optionally, in this embodiment of the application, the terminal determining the target threshold includes:

[0072] The terminal acquires at least one channel occupancy time threshold (COT_Thres), and each channel occupancy time threshold corresponds to at least one SL logical channel priority value;

[0073] The terminal determines the channel occupancy time threshold corresponding to the SL logical channel priority value of the target logical channel as the target threshold, and the target logical channel is determined by the SL logical channel corresponding to the SL service.

[0074] It should be understood that the aforementioned channel occupancy time threshold can be configured or pre-configured by the control node, and may include different thresholds such as 2ms and 8ms. A larger SL logical channel priority value indicates a higher priority, and a smaller SL logical channel priority value indicates a lower priority. The control node can be a network-side device or a terminal, without further limitations.

[0075] Optionally, in some embodiments, when the available carriers are N1 first carriers, the terminal determines the candidate carrier based on the available carriers among the at least one carrier by:

[0076] The terminal determines the target threshold;

[0077] The terminal identifies the first carrier among the N1 first carriers whose Listen-After-Speak (LBT) success rate is greater than or equal to the target threshold as a candidate carrier.

[0078] Where N1 is a positive integer.

[0079] It should be understood that the success rate of LBT is calculated as (the number of successful LBTs divided by the total number of LBTs); furthermore, the calculation time window can be limited, for example, from the current moment back to 1 second in the past; or from the first LBT to the current moment, etc.

[0080] Optionally, in this embodiment of the application, the terminal determining the target threshold includes:

[0081] The terminal acquires at least one LBT threshold, and each LBT threshold corresponds to at least one SL logical channel priority value;

[0082] The terminal determines the LBT threshold corresponding to the SL logical channel priority value of the target logical channel as the target threshold, and the target logical channel is determined by the SL logical channel corresponding to the SL service.

[0083] It should be noted that, in some embodiments, the target logical channel satisfies any one of the following:

[0084] The target logical channel is the SL logical channel with the highest SL logical channel priority among all SL logical channels corresponding to the SL service;

[0085] The target logical channel is the SL logical channel with the highest priority among the M SL logical channels, where M is a positive integer, and the M SL logical channels are the SL logical channels used only for unlicensed frequency bands among all the SL logical channels corresponding to the SL service.

[0086] It should be understood that in this embodiment, the target logical channel being the SL logical channel with the highest priority among all SL logical channels corresponding to the SL service can be interpreted as: the determination of the target logical channel is not based on SL logical channel restriction information. The statement that the target logical channel is the SL logical channel with the highest priority among M SL logical channels can be interpreted as: the determination of the target logical channel is based on SL logical channel restriction information. This SL logical channel restriction information can be configured or pre-configured by the control node.

[0087] Furthermore, in some embodiments, the method further includes:

[0088] The terminal determines the type of SL logical channel based on the target configuration information configured or pre-configured by the control node. The type of SL logical channel includes at least one of SL logical channels used only for unlicensed frequency bands and SL logical channels used only for licensed frequency bands.

[0089] Among them, "only for unlicensed frequency bands" can be represented as "SL-U only", and "only for licensed frequency bands" can be represented as "SLonly".

[0090] Optionally, in some embodiments, the available carrier is a carrier included in the SL resources configured or pre-configured by the control node among the at least one carrier.

[0091] In this embodiment of the application, if at least some or all of the first carriers of at least one first carrier are included in the configured or pre-configured SL resources, then the included portion or all of the first carriers are determined to be at least one usable first carrier, i.e., N1 first carriers. If at least some or all of the second carriers of at least one second carrier are included in the configured or pre-configured SL resources, then the included portion or all of the second carriers are determined to be at least one usable second carrier, i.e., N2 second carriers.

[0092] Optionally, when the available carriers include N1 first carriers and N2 second carriers, the terminal determines the candidate carriers based on the available carriers among the at least one carrier, including at least one of the following:

[0093] If the terminal does not support the simultaneous operation of the first carrier and the second carrier, the terminal determines the candidate carrier according to a preset rule;

[0094] In a terminal that supports the simultaneous operation of the first carrier and the second carrier, the terminal determines the N1 first carriers and the N2 second carriers as candidate carriers;

[0095] Where N1 and N2 are both positive integers.

[0096] In this embodiment of the application, whether the terminal supports or does not support the simultaneous operation of the first carrier and the second carrier can be understood as whether the terminal's capability supports the simultaneous operation of the first carrier and the second carrier, or whether the control node determines whether it supports the simultaneous operation of the first carrier and the second carrier based on the communication scenario, or whether the control node instructs the terminal whether it supports the simultaneous operation of the first carrier and the second carrier.

[0097] It should be understood that when the available carriers only include N2 second carriers, candidate carriers can be determined by referring to relevant technologies, which will not be elaborated here.

[0098] Optionally, in some embodiments, the preset rule includes at least one of the following:

[0099] Rule 1: Based on the indication information sent by the control node, determine the candidate carrier to be selected based on the N1 first carriers or the N2 second carriers;

[0100] Rule 2: If the protocol stipulates that the first carrier or the second carrier is preferred, the candidate carrier is selected based on the target object. If the first carrier is preferred, the target object is the N1 first carriers. If the second carrier is preferred, the target object is the N2 second carriers.

[0101] Rule 3: If the measurement results of all the first carriers in the N1 first carriers do not meet the first measurement condition, then a candidate carrier is selected based on the N2 second carriers.

[0102] Rule 4: If the priority of the first logical channel in the SL logical channel corresponding to the SL service is higher than or equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, then candidate carriers are selected based on the N1 first carriers.

[0103] Rule 5: If the measurement result of the first target carrier is greater than or equal to the first preset value and the measurement result of the second target carrier is less than or equal to the second preset value, then a candidate carrier is selected based on the N1 first carriers; otherwise, a candidate carrier is selected based on the N2 second carriers.

[0104] Rule 6: If the measurement results of all the N2 second carriers do not meet the second measurement condition, a candidate carrier is selected based on the N1 first carriers.

[0105] Rule 7: If the priority of the first logical channel in the SL logical channel corresponding to the SL service is higher than or equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, then candidate carriers are selected based on the N2 second carriers.

[0106] Rule 8: If the measurement result of the first target carrier is less than or equal to the third preset value and the measurement result of the second target carrier is greater than or equal to the fourth preset value, a candidate carrier is selected based on the N2 second carriers; otherwise, a candidate carrier is selected based on the N1 first carriers.

[0107] Wherein, the first target carrier is the carrier with the best measurement result among the N1 first carriers, the second target carrier is the carrier with the best measurement result among the N2 second carriers, the first logical channel is the logical channel with the highest priority among all logical channels used only in unlicensed frequency bands, and the second logical channel is the logical channel with the highest priority among all logical channels used only in licensed frequency bands.

[0108] In this embodiment, the measurement results typically include measurement results of one or more dimensions, such as Channel Busy Rate (CBR) and Sidelink Reference Signal Received Power (SL-RSRP). Ideally, the measurement results should be understood as the best result for a particular dimension; for example, for CBR, a smaller CBR value is better; and for SL-RSRP, a larger SL-RSRP value is better.

[0109] Regarding rule 1, if the indication information specifies a first carrier, then N1 first carriers can be included as candidate carriers. If the indication information specifies a second carrier, then N2 second carriers can be included as candidate carriers.

[0110] Regarding rule 2, it can be understood that the target object always takes precedence. For example, if the protocol specifies that the first carrier takes precedence, then N1 first carriers can be included as candidate carriers; if the protocol specifies that the second carrier takes precedence, then N1 second carriers can be included as candidate carriers.

[0111] Optionally, if both rules 4 and 7 exist, for the case where the priority of the first logical channel in the SL logical channel corresponding to the SL service is equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, candidate carriers can be selected based on the N1 first carriers or the N2 second carriers. That is, only one of rules 4 and 7 retains the case where they are equal.

[0112] It should be noted that rules 1 to 8 above only specify whether to prioritize selecting candidate carriers based on the first carrier or the second carrier. Furthermore, after determining whether to select candidate carriers based on the first or second carrier, the specific method for selecting candidate carriers can be set according to actual needs. For example, in some embodiments, the preset rules also include at least one of the following:

[0113] If candidate carriers are selected based on the N1 first carriers, then if the measurement result of at least one of the N1 first carriers satisfies the first measurement condition, the first carrier whose measurement result satisfies the first measurement condition is determined as a candidate carrier.

[0114] If a candidate carrier is selected based on the N2 second carriers, then if the measurement result of at least one of the N2 first carriers satisfies the second measurement condition, the second carrier whose measurement result satisfies the second measurement condition is determined as a candidate carrier.

[0115] In this embodiment, the first measurement condition can be understood as the measurement result of the first carrier being greater than or less than a certain preset threshold, and the second measurement condition can be understood as the measurement result of the second carrier being greater than or less than a certain preset threshold. Specifically, the size of the preset threshold can be set according to actual conditions, and is not further limited here. By selecting the first carrier that meets the first measurement condition or the second carrier that meets the second measurement condition as the candidate carrier, the reliability of transmission can be improved.

[0116] Optionally, when the terminal supports simultaneous operation of the first carrier and the second carrier, and the first resource authorized on the first carrier overlaps with the second resource authorized on the second carrier in the time domain, the transmission behavior of the terminal satisfies any one of the following:

[0117] The first resource takes priority, or the second resource takes priority;

[0118] The first resource priority or the second resource priority is determined based on the SL logical channel priority of at least one third logical channel and the SL logical channel priority of at least one fourth logical channel.

[0119] Wherein, the at least one third logical channel includes the SL logical channel in the SL service that is used only for unlicensed frequency bands; the at least one fourth logical channel includes the SL logical channel in the SL service that is used only for licensed frequency bands.

[0120] Optionally, determining the first resource priority or the second resource priority based on the SL logical channel priority of at least one third logical channel and the SL logical channel priority of at least one fourth logical channel includes at least one of the following:

[0121] The first resource takes precedence when the highest SL logical channel priority of the at least one third logical channel is higher than or equal to the highest SL logical channel priority of the at least one fourth logical channel.

[0122] The second resource takes precedence when the highest SL logical channel priority of the at least one fourth logical channel is higher than or equal to the highest SL logical channel priority of the at least one third logical channel.

[0123] Optionally, when the highest SL logical channel priority of the at least one fourth logical channel is equal to the highest SL logical channel priority of the at least one third logical channel, it can be either a first resource priority or a second resource priority. That is, when both of the above are included, determining the first resource priority or the second resource priority based on the SL logical channel priority of the at least one third logical channel and the SL logical channel priority of the at least one fourth logical channel includes:

[0124] The first resource takes precedence when the highest SL logical channel priority of the at least one third logical channel is higher than or equal to the highest SL logical channel priority of the at least one fourth logical channel.

[0125] The second resource takes precedence when the highest SL logical channel priority of the at least one fourth logical channel is higher than the highest SL logical channel priority of the at least one third logical channel.

[0126] Alternatively, determining the first resource priority or the second resource priority based on the SL logical channel priority of at least one third logical channel and the SL logical channel priority of at least one fourth logical channel includes:

[0127] When the highest SL logical channel priority of the at least one third logical channel is higher than the highest SL logical channel priority of the at least one fourth logical channel, the first resource takes precedence.

[0128] The second resource takes precedence when the highest SL logical channel priority of the at least one fourth logical channel is higher than or equal to the highest SL logical channel priority of the at least one third logical channel.

[0129] Optionally, the transmission behavior of the terminal also satisfies at least one of the following:

[0130] In the case of priority for the first resource, a first operation is performed, the first operation including at least one of the following: selecting the at least one third logical channel to perform a logical channel priority (LCP) procedure; discarding the second resource;

[0131] In the case of second resource priority, a second operation is performed, the second operation including at least one of the following: selecting the at least one fourth logical channel to perform a logical channel priority LCP procedure, and discarding the first resource.

[0132] In this embodiment of the application, selecting at least one third logical channel to perform the LCP procedure can be understood as: selecting at least one third logical channel to multiplex and transmit SL Media Access Control (MAC) Protocol Data Unit (PDU); selecting at least one third logical channel to perform the LCP procedure can be understood as: selecting at least one fourth logical channel to multiplex and transmit SL MAC PDU.

[0133] Optionally, in some embodiments, if the resource allocation mode of the terminal is a terminal autonomous selection mode, the transmission behavior of the terminal also satisfies:

[0134] If the first resource is discarded, a reselection of the first resource is triggered;

[0135] If the second resource is discarded, a second resource reselection is triggered.

[0136] In this embodiment of the application, the reliability of transmission can be improved by triggering the reselection of the corresponding resources after discarding them.

[0137] To better understand this application, the following detailed explanations are provided with specific examples.

[0138] Example 1: Multi-carrier scenario with only at least one first carrier.

[0139] Step 1: An SL service arrives at the UE's upper layer, and the upper layer provides the corresponding transmission information for the SL service. This transmission information includes at least one of the following:

[0140] A carrier list, wherein the carrier list includes at least one carrier frequency point;

[0141] Transmission mode, also known as transmission type or transmission format.

[0142] The transmission mode includes at least one of the following: side-link transmission in licensed frequency bands (also known as SL-U mode) and side-link transmission in unlicensed frequency bands (also known as SL mode).

[0143] Optionally, different transmission modes satisfy at least one of the following:

[0144] Different transmission modes are carried through the transmit profile (TX profile) provided by the upper layer of the terminal;

[0145] Different transmission modes are associated with at least one carrier frequency.

[0146] Different transmission modes are associated with at least one service type;

[0147] Different transmission modes are associated with at least one application identifier;

[0148] Different transmission modes are associated with at least one destination layer 2 identifier;

[0149] Different transmission modes are associated with at least one set of quality of service parameters.

[0150] Step 2: If the transmission information in Step 1 determines that there is "at least one first carrier", and some or all of the first carriers of "at least one first carrier" are included in the SL resources configured or pre-configured by the base station, then the included part or all of the first carriers are determined as "at least one available first carrier".

[0151] Alternatively, the terminal may determine the candidate carrier according to at least one of the following rules:

[0152] Rule A: Combining A-1 and A-2, the UE determines a unique COT_Thres(k). If the COT of any of the "at least one available first carriers" is greater than or equal to COT_Thres(k), then the corresponding carrier is included in the candidate carriers.

[0153] A-1: The UE obtains one or more COT_Thres(1,2,3,...k,...N) configured or pre-configured by the base station, where each COT_Thres(k) is associated with one or more SL logical channel priority values ​​Priority(1,2,3,...j,...8).

[0154] A-2: The UE determines the highest SL logical channel priority value using one of the following methods:

[0155] The highest priority value is selected from all SL logical channels corresponding to the SL service.

[0156] The UE obtains the SL logical channel restriction information configured or pre-configured by the base station. Based on all SL logical channels corresponding to the SL service, it first selects the logical channels whose SL logical channel restriction is "SL-U only," and takes the highest priority value among them. In a special case, assuming that 0 logical channels are selected with the SL logical channel restriction "SL-U only," it means that "at least one available first carrier" cannot become a candidate carrier.

[0157] Rule B: Combining B-1, B-2, and B-3, the UE determines a unique LBT_Thres(k). If the LBT measurement result of any of the "at least one available first carriers" is greater than or equal to LBT_Thres(k), then the corresponding carrier is included in the candidate carriers.

[0158] B-1: The UE obtains one or more LBT_Thres (1,2,3,...k,...N) configured or pre-configured by the base station, where each LBT_Thres(k) is associated with one or more SL logical channel priority values ​​Priority (1,2,3,...j,...8).

[0159] B-2: The success rate of LBT is calculated as (the number of successful LBTs divided by the total number of LBTs); furthermore, the calculation time window can be limited, such as going back 1 second from the current moment; or from the first LBT to the current moment, etc.

[0160] B-3: The UE determines the highest SL logical channel priority value using one of the following methods:

[0161] The highest priority value is selected from all SL logical channels corresponding to the SL service.

[0162] The UE obtains the SL logical channel restriction information configured or pre-configured by the base station. Based on all SL logical channels corresponding to the SL service, it first selects the logical channels whose SL logical channel restriction is "SL-U only," and takes the highest priority value among them. In a special case, assuming that 0 logical channels are selected with the SL logical channel restriction "SL-U only," it means that "at least one available first carrier" cannot become a candidate carrier.

[0163] Example 2: A multi-carrier scenario in which at least one first carrier and at least one second carrier coexist.

[0164] Step 1: An SL service arrives at the UE's upper layer, and the upper layer provides the corresponding transmission information for the SL service. This transmission information includes at least one of the following:

[0165] A carrier list, wherein the carrier list includes at least one carrier frequency point;

[0166] Transmission mode, also known as transmission type or transmission format.

[0167] The transmission mode includes at least one of the following: side-link transmission in licensed frequency bands (also known as SL-U mode) and side-link transmission in unlicensed frequency bands (also known as SL mode).

[0168] Optionally, different transmission modes satisfy at least one of the following:

[0169] Different transmission modes are carried through the transmit profile (TX profile) provided by the upper layer of the terminal;

[0170] Different transmission modes are associated with at least one carrier frequency.

[0171] Different transmission modes are associated with at least one service type;

[0172] Different transmission modes are associated with at least one application identifier;

[0173] Different transmission modes are associated with at least one destination layer 2 identifier;

[0174] Different transmission modes are associated with at least one set of quality of service parameters.

[0175] Step 2: If the transmission information in Step 1 determines that "at least one first carrier and at least one second carrier" are involved, then the following situations exist:

[0176] Case 1: If only the condition "at least one first carrier" is met, and some or all of the first carriers are included in the SL resources configured or pre-configured by the base station, then the included some or all of the first carriers are determined as "at least one available first carrier". In this case, the method for determining the candidate carrier can refer to the above embodiment 1, and will not be repeated again.

[0177] Case 2: If only the condition "at least one second carrier" is met, and some or all of the second carriers are included in the base station configuration or pre-configured SL resources, then the included some or all of the second carriers are determined as "at least one available second carrier". In this case, the method for determining the candidate carrier can refer to the existing relevant mechanisms, and will not be repeated here.

[0178] Case 3: If two conditions are met: some or all of the fighting carriers of "at least one first carrier" are included in the SL resources configured or pre-configured by the base station, and some or all of the second carriers of "at least one second carrier" are included in the SL resources configured or pre-configured by the base station, then the included some or all of the first carriers and the second carriers are determined as "at least one first carrier and at least one second carrier available".

[0179] For scenario 3, assuming that the first and second carriers inside the terminal are not allowed to operate simultaneously, then the candidate carriers will continue to be determined according to at least one of the following rules:

[0180] Rule C: The control node is configured or pre-configured to operate in SL-U mode or SL mode. If the indication is SL-U mode, then "at least one first carrier" can be included as a candidate carrier; if the indication is SL mode, then "at least one second carrier" can be included as a candidate carrier.

[0181] Rule D: Always prioritize the first carrier or always prioritize the second carrier. If priority is given to the first carrier, then "at least one first carrier" may be included as a candidate carrier; if priority is given to the second carrier, then "at least one second carrier" may be included as a candidate carrier.

[0182] Rule E: Under certain conditions, the first carrier is given priority, including at least one of the following:

[0183] Rule E-1: If the measurement result of any of the first carriers in "at least one available first carrier" meets the threshold condition (using rule A or B), then the corresponding carrier is included in the candidate carriers; only when all the first carriers in "at least one available first carrier" do not meet the threshold condition (using rule A or B) is "at least one available second carrier" included in the candidate carriers.

[0184] Rule E-2: The UE obtains the SL logical channel restriction information configured or pre-configured by the base station. Based on the logical channel restriction information, if the highest priority of all logical channels in the SL service to be transmitted that are restricted to "SL-U only" is higher than or equal to the highest priority of all logical channels in the SL service to be transmitted that are restricted to "SL only", then "at least one first carrier" can be included as a candidate carrier.

[0185] Rule E-3: Select carrier 1 with the best measurement result from "at least one available SL-U carrier" and carrier 2 with the best measurement result from "at least one available second carrier"; if the measurement result of carrier 1 is greater than the preset threshold 1 and carrier 2 is less than the preset threshold 2, then the first carrier is given priority; otherwise, the second carrier is given priority.

[0186] Rule F: Under certain conditions, the second carrier shall be given priority, including at least one of the following:

[0187] Rule F-1: If the measurement result of one of the second carriers in "at least one available second carrier" meets the threshold condition (existing measurement, such as CBR, SL-RSRP), then the corresponding carrier is included in the candidate carrier; only when all the second carrier measurements in "at least one available second carrier" do not meet the threshold condition (using rule A or B), then "at least one first carrier" is included in the candidate carrier.

[0188] Rule F-2: The UE obtains the SL logical channel restriction information configured or pre-configured by the base station. Based on the logical channel restriction information, if the highest priority of all logical channels in the SL service to be transmitted that are restricted to "SL only" is higher than or equal to the highest priority of all logical channels in the SL service to be transmitted that are restricted to "SL-U only", then "at least one second carrier" can be included as a candidate carrier.

[0189] Rule F-3: Select carrier 1 with the best measurement result among "at least one available first carrier" and carrier 2 with the best measurement result among "at least one available second carrier"; if the measurement result of carrier 1 is less than the preset threshold 1 and carrier 2 is greater than the preset threshold 2, then the second carrier is given priority; otherwise, the first carrier is given priority.

[0190] For scenario 3, assuming that the first and second carriers within the UE can operate simultaneously, define a mechanism for resolving SL-U and SL resource conflicts and a mechanism for prioritizing SL MAC PDU transmission, including at least one of the following:

[0191] Rule G: The licensed resources of the first carrier (hereinafter referred to as the first resource) or the licensed resources of the second carrier (hereinafter referred to as the second resource) are always given priority.

[0192] Rule G-1: Always prioritize the first resource and use it for SL MAC PDUs multiplexed through at least one logical channel associated with "SL-U type", discard the second resource, and trigger SL mode 2 resource reselection if the UE is operating in SL mode 2.

[0193] Rule G-2: Always prioritize the second resource and use it for SL MAC PDUs transmitted via multiplexing of at least one logical channel associated with the "SL type", discarding the first resource.

[0194] Rule H: The transmission behavior is determined based on the comparison result between the priority of at least one logical channel associated with "SL-U type" and the priority of at least one logical channel associated with "SL type" in the SL service to be transmitted.

[0195] Rule H-1: If the highest priority in at least one logical channel associated with "SL-U type" in the SL service to be transmitted is higher than or equal to the highest priority in at least one logical channel associated with "SL type" in the SL service to be transmitted, then the first resource is given priority and used for the SL MAC PDU multiplexed in at least one logical channel associated with "SL-U type", and the second resource is discarded; if the UE is working in SL mode 2, then resource reselection is triggered.

[0196] Rule H-2: If the highest priority in at least one logical channel associated with "SL type" in the SL service to be transmitted is higher than or equal to the highest priority in at least one logical channel associated with "SL-U type" in the SL service to be transmitted, then the second resource is given priority and used for multiplexing the SL MAC PDU transmitted in at least one logical channel associated with "SL type", and the first resource is discarded; if the UE is working in SL mode 2, then resource reselection is triggered.

[0197] Optionally, at least one logical channel associated with "SL-U type" can be understood as a logical channel associated with an unlicensed frequency band, or as a logical channel used only for unlicensed frequency bands; at least one logical channel associated with "SL type" can be understood as a logical channel associated with a licensed frequency band, or as a logical channel used only for licensed frequency bands.

[0198] It should be noted that the SL service transmission processing method provided in this application embodiment can be executed by an SL service transmission processing device, or by a control module within the SL service transmission processing device for executing the SL service transmission processing method. This application embodiment uses the execution of the SL service transmission processing method by an SL service transmission processing device as an example to illustrate the SL service transmission processing device provided in this application embodiment.

[0199] Please see Figure 3 , Figure 3 This is a structural diagram of an SL service transmission processing apparatus provided in an embodiment of this application, as shown below. Figure 3 As shown, the SL service transmission processing device 300 includes:

[0200] The first determining module 301 is used to determine at least one carrier based on the transmission information corresponding to the SL service.

[0201] The second determining module 302 is used to determine a candidate carrier based on the available carriers among the at least one carrier;

[0202] Wherein, the at least one carrier includes a first carrier and / or a second carrier, wherein the first carrier is an SL carrier in an unlicensed frequency band and the second carrier is an SL carrier in a licensed frequency band.

[0203] Optionally, the transmission information includes at least one of a carrier list and a transmission mode.

[0204] Optionally, the transmission mode includes at least one of the side-link transmission mode of unlicensed frequency bands and the side-link transmission mode of licensed frequency bands.

[0205] Optionally, the transmission mode satisfies at least one of the following:

[0206] Different transmission modes are carried through the transmission configuration provided by the upper layer of the terminal;

[0207] Different transmission modes are associated with at least one carrier frequency.

[0208] Different transmission modes are associated with at least one service type;

[0209] Different transmission modes are associated with at least one application identifier;

[0210] Different transmission modes are associated with at least one destination layer 2 identifier;

[0211] Different transmission modes are associated with at least one set of quality of service parameters.

[0212] Optionally, when the available carriers are N1 first carriers, the second determining module 302 is specifically used for:

[0213] Determine the target threshold;

[0214] The first carrier among the N1 first carriers whose channel occupancy time is greater than or equal to the target threshold is determined as a candidate carrier;

[0215] Where N1 is a positive integer.

[0216] Optionally, the second determining module 302 is specifically used for:

[0217] Obtain at least one channel occupancy time threshold, and each channel occupancy time threshold corresponds to at least one SL logical channel priority value;

[0218] The target threshold is determined by the channel occupancy time threshold corresponding to the SL logical channel priority value of the target logical channel, and the target logical channel is determined by the SL logical channel corresponding to the SL service.

[0219] Optionally, when the available carriers are N1 first carriers, the second determining module is specifically used for:

[0220] Determine the target threshold;

[0221] The first carrier among the N1 first carriers whose Listen-After-Speak (LBT) success rate is greater than or equal to the target threshold is determined as a candidate carrier;

[0222] Where N1 is a positive integer.

[0223] Optionally, the second determining module 302 is specifically used for:

[0224] Obtain at least one LBT threshold, and each LBT threshold corresponds to at least one SL logical channel priority value;

[0225] The LBT threshold corresponding to the SL logical channel priority value of the target logical channel is determined as the target threshold, and the target logical channel is determined by the SL logical channel corresponding to the SL service.

[0226] Optionally, the target logical channel satisfies any one of the following:

[0227] The target logical channel is the SL logical channel with the highest SL logical channel priority among all SL logical channels corresponding to the SL service;

[0228] The target logical channel is the SL logical channel with the highest priority among the M SL logical channels, where M is a positive integer, and the M SL logical channels are the SL logical channels used only for unlicensed frequency bands among all the SL logical channels corresponding to the SL service.

[0229] Optionally, the second determining module 302 is further configured to: determine the type of SL logical channel based on the control node configuration or pre-configured target configuration information, wherein the type of SL logical channel includes at least one of SL logical channels used only for unlicensed frequency bands and SL logical channels used only for licensed frequency bands.

[0230] Optionally, the available carrier is a carrier included in the SL resources configured or pre-configured by the control node among the at least one carrier.

[0231] Optionally, when the available carriers include N1 first carriers and N2 second carriers, the second determining module 302 is specifically configured to perform at least one of the following:

[0232] If the terminal does not support the simultaneous operation of the first carrier and the second carrier, the candidate carrier is determined according to a preset rule;

[0233] When the terminal supports the simultaneous operation of the first carrier and the second carrier, the N1 first carriers and the N2 second carriers are determined as candidate carriers;

[0234] Where N1 and N2 are both positive integers.

[0235] Optionally, the preset rules include at least one of the following:

[0236] Based on the indication information sent by the control node, a candidate carrier is selected based on the N1 first carriers or the N2 second carriers;

[0237] The protocol stipulates that if the first carrier or the second carrier is given priority, the candidate carrier is selected based on the target object. If the first carrier is given priority, the target object is the N1 first carriers. If the second carrier is given priority, the target object is the N2 second carriers.

[0238] If the measurement results of all the first carriers in the N1 first carriers do not meet the first measurement condition, then candidate carriers are selected based on the N2 second carriers.

[0239] If the priority of the first logical channel in the SL logical channel corresponding to the SL service is higher than or equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, then candidate carriers are selected based on the N1 first carriers.

[0240] If the measurement result of the first target carrier is greater than or equal to the first preset value and the measurement result of the second target carrier is less than or equal to the second preset value, then a candidate carrier is selected based on the N1 first carriers; otherwise, a candidate carrier is selected based on the N2 second carriers.

[0241] If the measurement results of all the N2 second carriers do not meet the second measurement condition, then a candidate carrier is selected based on the N1 first carriers.

[0242] If the priority of the first logical channel in the SL logical channel corresponding to the SL service is higher than or equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, then candidate carriers are selected based on the N2 second carriers.

[0243] If the measurement result of the first target carrier is less than or equal to the third preset value and the measurement result of the second target carrier is greater than or equal to the fourth preset value, a candidate carrier is selected based on the N2 second carriers; otherwise, a candidate carrier is selected based on the N1 first carriers.

[0244] Wherein, the first target carrier is the carrier with the best measurement result among the N1 first carriers, the second target carrier is the carrier with the best measurement result among the N2 second carriers, the first logical channel is the logical channel with the highest priority among all logical channels used only in unlicensed frequency bands, and the second logical channel is the logical channel with the highest priority among all logical channels used only in licensed frequency bands.

[0245] Optionally, the preset rule further includes at least one of the following:

[0246] If candidate carriers are selected based on the N1 first carriers, then if the measurement result of at least one of the N1 first carriers satisfies the first measurement condition, the first carrier whose measurement result satisfies the first measurement condition is determined as a candidate carrier.

[0247] If a candidate carrier is selected based on the N2 second carriers, then if the measurement result of at least one of the N2 first carriers satisfies the second measurement condition, the second carrier whose measurement result satisfies the second measurement condition is determined as a candidate carrier.

[0248] Optionally, when the terminal supports simultaneous operation of the first carrier and the second carrier, and the first resource authorized on the first carrier overlaps with the second resource authorized on the second carrier in the time domain, the transmission behavior of the terminal satisfies any one of the following:

[0249] The first resource takes priority, or the second resource takes priority;

[0250] The first resource priority or the second resource priority is determined based on the SL logical channel priority of at least one third logical channel and the SL logical channel priority of at least one fourth logical channel.

[0251] Wherein, the at least one third logical channel includes the SL logical channel in the SL service that is used only for unlicensed frequency bands; the at least one fourth logical channel includes the SL logical channel in the SL service that is used only for licensed frequency bands.

[0252] Optionally, determining the first resource priority or the second resource priority based on the SL logical channel priority of at least one third logical channel and the SL logical channel priority of at least one fourth logical channel includes at least one of the following:

[0253] The first resource takes precedence when the highest SL logical channel priority of the at least one third logical channel is higher than or equal to the highest SL logical channel priority of the at least one fourth logical channel.

[0254] The second resource takes precedence when the highest SL logical channel priority of the at least one fourth logical channel is higher than or equal to the highest SL logical channel priority of the at least one third logical channel.

[0255] Optionally, the transmission behavior of the terminal also satisfies at least one of the following:

[0256] In the case of priority of the first resource, a first operation is performed, the first operation including at least one of the following: selecting the at least one third logical channel to perform a logical channel priority LCP procedure; discarding the second resource;

[0257] In the case of second resource priority, a second operation is performed, the second operation including at least one of the following: selecting the at least one fourth logical channel to perform a logical channel priority LCP procedure, and discarding the first resource.

[0258] Optionally, if the resource allocation mode of the terminal is a terminal autonomous selection mode, the transmission behavior of the terminal also satisfies:

[0259] If the first resource is discarded, a reselection of the first resource is triggered;

[0260] If the second resource is discarded, a second resource reselection is triggered.

[0261] The SL service transmission processing device provided in this application embodiment can achieve... Figure 2 To avoid repetition, the various processes in the method embodiments will not be described again here.

[0262] The SL service transmission processing device in this application embodiment can be a device, a device with an operating system, or an electronic device, or it can be a component, integrated circuit, or chip in a terminal. The device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0263] Optional, such as Figure 4 As shown, this application embodiment also provides a communication device 400, including a processor 401, a memory 402, and a program or instructions stored in the memory 402 and executable on the processor 401. When the program or instructions are executed by the processor 401, they implement the various processes of the above-described SL service transmission processing method embodiment and achieve the same technical effect, which will not be repeated here.

[0264] This application embodiment also provides a terminal, including a processor and a communication interface. The processor is configured to: determine at least one carrier based on transmission information corresponding to an SL service; and determine candidate carriers based on available carriers among the at least one carrier. The at least one carrier includes a first carrier and / or a second carrier, wherein the first carrier is an SL carrier in an unlicensed frequency band, and the second carrier is an SL carrier in a licensed frequency band. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effects. Specifically, Figure 5 A schematic diagram of the hardware structure of a terminal to implement the various embodiments of this application.

[0265] The terminal 500 includes, but is not limited to, at least some of the following components: radio frequency unit 501, network module 502, audio output unit 503, input unit 504, sensor 505, display unit 506, user input unit 507, interface unit 508, memory 509, and processor 510.

[0266] Those skilled in the art will understand that the terminal 500 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 510 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 5 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0267] It should be understood that, in this embodiment, the input unit 504 may include a graphics processing unit (GPU) and a microphone. The GPU processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 506 may include a display panel, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 507 includes a touch panel and other input devices. The touch panel is also called a touch screen. The touch panel may include a touch detection device and a touch controller. Other input devices may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0268] In this embodiment, the radio frequency unit 501 receives downlink data from the network-side device and processes it for the processor 510; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0269] Memory 509 can be used to store software programs or instructions and various data. Memory 109 may mainly include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback function, image playback function, etc.). In addition, memory 509 may include high-speed random access memory and non-transient memory. The non-transient memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-transient solid-state storage device.

[0270] Processor 510 may include one or more processing units; optionally, processor 510 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 510.

[0271] The processor 510 is configured to: determine at least one carrier based on the transmission information corresponding to the SL service; determine candidate carriers based on the available carriers among the at least one carrier; wherein the at least one carrier includes a first carrier and / or a second carrier, the first carrier being an SL carrier in an unlicensed frequency band, and the second carrier being an SL carrier in a licensed frequency band.

[0272] The terminal provided in this application embodiment can achieve... Figure 2 To avoid repetition, the various processes in the embodiments of the SL service transmission processing method shown will not be described again here.

[0273] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described SL service transmission processing method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0274] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0275] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described SL service transmission processing method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0276] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0277] This application embodiment also provides a program product, which is stored in a non-transient storage medium. The program product is executed by at least one processor to implement the various processes of the above-described SL service transmission processing method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0278] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0279] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or base station, etc.) to execute the methods described in the various embodiments of this application.

[0280] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for processing side-link SL service transmission, characterized in that, include: The terminal determines at least one carrier based on the transmission information corresponding to the SL service; The terminal determines a candidate carrier based on the available carriers among the at least one carrier; Wherein, the at least one carrier includes a first carrier and / or a second carrier, wherein the first carrier is an SL carrier in an unlicensed frequency band, and the second carrier is an SL carrier in a licensed frequency band; Wherein, when there are N1 available carriers, the terminal determines candidate carriers based on available carriers among the at least one carrier, including: the terminal determines a first target threshold; the terminal determines the first carriers among the N1 first carriers whose channel occupancy time is greater than or equal to the first target threshold as candidate carriers; wherein, N1 is a positive integer; the terminal determines the first target threshold, including: the terminal obtains at least one channel occupancy time threshold, each channel occupancy time threshold corresponding to at least one SL logical channel priority value; the terminal determines the channel occupancy time threshold corresponding to the SL logical channel priority value of the target logical channel as the first target threshold, wherein the target logical channel is determined by the SL logical channel corresponding to the SL service; Alternatively, when the available carriers are N1 first carriers, the terminal determines candidate carriers based on the available carriers among the at least one carrier, including: the terminal determines a second target threshold; the terminal determines the first carriers among the N1 first carriers whose Listen-Before-Speak (LBT) success rate is greater than or equal to the second target threshold as candidate carriers; where N1 is a positive integer; the terminal determines the second target threshold, including: the terminal acquires at least one LBT threshold, each LBT threshold corresponding to at least one SL logical channel priority value; the terminal determines the LBT threshold corresponding to the SL logical channel priority value of the target logical channel as the second target threshold, where the target logical channel is determined by the SL logical channel corresponding to the SL service; Alternatively, when the available carriers include N1 first carriers and N2 second carriers, the terminal determines candidate carriers based on the available carriers among the at least one carrier, including at least one of the following: when the terminal does not support simultaneous operation of the first carrier and the second carrier, the terminal determines the candidate carriers according to a preset rule; when the terminal supports simultaneous operation of the first carrier and the second carrier, the terminal determines the N1 first carriers and the N2 second carriers as candidate carriers; wherein N1 and N2 are both positive integers; the preset rule includes at least one of the following: determining the candidate carriers based on the N1 first carriers or the N2 second carriers according to the indication information sent by the control node. N2 second carriers are selected as candidate carriers; if the protocol stipulates priority for the first carrier or the second carrier, candidate carriers are selected based on the target object. If the first carrier is prioritized, the target object is the N1 first carriers; if the second carrier is prioritized, the target object is the N2 second carriers. If the measurement results of all the first carriers in the N1 first carriers do not meet the first measurement condition, candidate carriers are selected based on the N2 second carriers. If the priority of the first logical channel in the SL logical channel corresponding to the SL service is higher than or equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, candidate carriers are selected based on the N2 second carriers. One first carrier is used to select candidate carriers; if the measurement result of the first target carrier is greater than or equal to a first preset value and the measurement result of the second target carrier is less than or equal to a second preset value, then candidate carriers are selected based on the N1 first carriers; otherwise, candidate carriers are selected based on the N2 second carriers; if the measurement results of all the N2 second carriers do not meet the second measurement condition, then candidate carriers are selected based on the N1 first carriers; if the priority of the first logical channel in the SL logical channel corresponding to the SL service is higher than or equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, then candidate carriers are selected based on the N2 first carriers. N2 second carriers are used to select candidate carriers; if the measurement result of the first target carrier is less than or equal to a third preset value and the measurement result of the second target carrier is greater than or equal to a fourth preset value, candidate carriers are selected based on the N2 second carriers; otherwise, candidate carriers are selected based on the N1 first carriers; wherein, the first target carrier is the carrier with the best measurement result among the N1 first carriers, the second target carrier is the carrier with the best measurement result among the N2 second carriers, the first logical channel is the logical channel with the highest priority among all logical channels used only in unlicensed frequency bands, and the second logical channel is the logical channel with the highest priority among all logical channels used only in licensed frequency bands.

2. The method according to claim 1, characterized in that, The transmission information includes at least one of a carrier list and a transmission mode.

3. The method according to claim 2, characterized in that, The transmission mode includes at least one of the side-link transmission mode of unlicensed frequency bands and the side-link transmission mode of licensed frequency bands.

4. The method according to claim 2, characterized in that, The transmission mode satisfies at least one of the following: Different transmission modes are carried through the transmission configuration provided by the upper layer of the terminal; Different transmission modes are associated with at least one carrier frequency. Different transmission modes are associated with at least one service type; Different transmission modes are associated with at least one application identifier; Different transmission modes are associated with at least one destination layer 2 identifier; Different transmission modes are associated with at least one set of quality of service parameters.

5. The method according to claim 1, characterized in that, The target logical channel satisfies any one of the following: The target logical channel is the SL logical channel with the highest SL logical channel priority among all SL logical channels corresponding to the SL service; The target logical channel is the SL logical channel with the highest priority among the M SL logical channels, where M is a positive integer, and the M SL logical channels are the SL logical channels used only for unlicensed frequency bands among all the SL logical channels corresponding to the SL service.

6. The method according to claim 5, characterized in that, The method further includes: The terminal determines the type of SL logical channel based on the target configuration information configured or pre-configured by the control node. The type of SL logical channel includes at least one of SL logical channels used only for unlicensed frequency bands and SL logical channels used only for licensed frequency bands.

7. The method according to claim 1, characterized in that, The available carrier is a carrier that is included in the SL resources configured or pre-configured by the control node among the at least one carrier.

8. The method according to claim 1, characterized in that, The preset rules also include at least one of the following: If candidate carriers are selected based on the N1 first carriers, then if the measurement result of at least one of the N1 first carriers satisfies the first measurement condition, the first carrier whose measurement result satisfies the first measurement condition is determined as a candidate carrier. If a candidate carrier is selected based on the N2 second carriers, then if the measurement result of at least one of the N2 first carriers satisfies the second measurement condition, the second carrier whose measurement result satisfies the second measurement condition is determined as a candidate carrier.

9. The method according to claim 1, characterized in that, When the terminal supports simultaneous operation of the first carrier and the second carrier, and the first resource authorized on the first carrier overlaps with the second resource authorized on the second carrier in the time domain, the transmission behavior of the terminal satisfies any of the following: The first resource takes priority, or the second resource takes priority; The first resource priority or the second resource priority is determined based on the SL logical channel priority of at least one third logical channel and the SL logical channel priority of at least one fourth logical channel. Wherein, the at least one third logical channel includes the SL logical channel in the SL service that is used only for unlicensed frequency bands; the at least one fourth logical channel includes the SL logical channel in the SL service that is used only for licensed frequency bands.

10. The method according to claim 9, characterized in that, Determining the first resource priority or the second resource priority based on the SL logical channel priority of at least one third logical channel and the SL logical channel priority of at least one fourth logical channel includes at least one of the following: The first resource takes precedence when the highest SL logical channel priority of the at least one third logical channel is higher than or equal to the highest SL logical channel priority of the at least one fourth logical channel. The second resource takes precedence when the highest SL logical channel priority of the at least one fourth logical channel is higher than or equal to the highest SL logical channel priority of the at least one third logical channel.

11. The method according to claim 9, characterized in that, The terminal's transmission behavior also satisfies at least one of the following: In the case of prioritizing the first resource, a first operation is performed, the first operation including at least one of the following: selecting the at least one third logical channel to perform a logical channel-priority LCP procedure; Discard the second resource; In the case of second resource priority, a second operation is performed, the second operation including at least one of the following: selecting the at least one fourth logical channel to perform a logical channel priority LCP procedure, and discarding the first resource.

12. The method according to claim 11, characterized in that, If the resource allocation mode of the terminal is the terminal autonomous selection mode, the transmission behavior of the terminal also satisfies: If the first resource is discarded, a reselection of the first resource is triggered; If the second resource is discarded, a second resource reselection is triggered.

13. A side-link SL service transmission processing apparatus, characterized in that, include: The first determining module is used to determine at least one carrier based on the transmission information corresponding to the SL service. The second determining module is used to determine candidate carriers based on available carriers among the at least one carrier; Wherein, the at least one carrier includes a first carrier and / or a second carrier, wherein the first carrier is an SL carrier in an unlicensed frequency band, and the second carrier is an SL carrier in a licensed frequency band; Wherein, when the available carriers are N1 first carriers, the second determining module is specifically used to: determine a first target threshold; determine the first carriers among the N1 first carriers whose channel occupancy time is greater than or equal to the first target threshold as candidate carriers; wherein, N1 is a positive integer; determining the first target threshold includes: obtaining at least one channel occupancy time threshold, each channel occupancy time threshold corresponding to at least one SL logical channel priority value; determining the channel occupancy time threshold corresponding to the SL logical channel priority value of the target logical channel as the first target threshold, wherein the target logical channel is determined by the SL logical channel corresponding to the SL service; Alternatively, when the available carriers are N1 first carriers, the second determining module is specifically used to: determine a second target threshold; determine the first carriers among the N1 first carriers whose Listen-Before-Speak (LBT) success rate is greater than or equal to the second target threshold as candidate carriers; wherein, N1 is a positive integer; determining the second target threshold includes: obtaining at least one LBT threshold, each LBT threshold corresponding to at least one SL logical channel priority value; determining the LBT threshold corresponding to the SL logical channel priority value of the target logical channel as the second target threshold, wherein the target logical channel is determined by the SL logical channel corresponding to the SL service; Alternatively, when the available carriers include N1 first carriers and N2 second carriers, the second determining module is specifically configured to perform at least one of the following: if the terminal does not support simultaneous operation of the first carriers and the second carriers, determine the candidate carriers according to a preset rule; if the terminal supports simultaneous operation of the first carriers and the second carriers, determine the N1 first carriers and the N2 second carriers as candidate carriers; wherein N1 and N2 are both positive integers; the preset rule includes at least one of the following: determining the selection of candidate carriers based on the N1 first carriers or the N2 second carriers according to the indication information sent by the control node; protocol preference. If the first carrier or the second carrier is selected first, candidate carriers are selected based on the target object. If the first carrier is prioritized, the target object is the N1 first carriers. If the second carrier is prioritized, the target object is the N2 second carriers. If the measurement results of all the first carriers in the N1 first carriers do not meet the first measurement condition, candidate carriers are selected based on the N2 second carriers. If the priority of the first logical channel in the SL logical channel corresponding to the SL service is higher than or equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, candidate carriers are selected based on the N1 first carriers. If the measurement result of the first target carrier is greater than or equal to a first preset value, and the measurement result of the second target carrier is less than or equal to a second preset value, a candidate carrier is selected based on the N1 first carriers; otherwise, a candidate carrier is selected based on the N2 second carriers. If the measurement results of all the N2 second carriers do not meet the second measurement condition, a candidate carrier is selected based on the N1 first carriers. If the priority of the first logical channel in the SL logical channel corresponding to the SL service is higher than or equal to the priority of the second logical channel in the SL logical channel corresponding to the SL service, a candidate carrier is selected based on the N2 second carriers. Candidate carriers are selected; if the measurement result of the first target carrier is less than or equal to a third preset value and the measurement result of the second target carrier is greater than or equal to a fourth preset value, candidate carriers are selected based on the N2 second carriers; otherwise, candidate carriers are selected based on the N1 first carriers; wherein, the first target carrier is the carrier with the best measurement result among the N1 first carriers, the second target carrier is the carrier with the best measurement result among the N2 second carriers, the first logical channel is the logical channel with the highest priority among all logical channels used only in unlicensed frequency bands, and the second logical channel is the logical channel with the highest priority among all logical channels used only in licensed frequency bands.

14. The apparatus according to claim 13, characterized in that, The transmission information includes at least one of a carrier list and a transmission mode.

15. The apparatus according to claim 14, characterized in that, The transmission mode satisfies at least one of the following: Different transmission modes are carried through the transmission configuration provided by the upper layer of the terminal; Different transmission modes are associated with at least one carrier frequency. Different transmission modes are associated with at least one service type; Different transmission modes are associated with at least one application identifier; Different transmission modes are associated with at least one destination layer 2 identifier; Different transmission modes are associated with at least one quality of service parameter.

16. A terminal, characterized in that, include: A memory, a processor, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the SL service transmission processing method as described in any one of claims 1 to 12.

17. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions, which, when executed by a processor, implement the steps of the SL service transmission processing method as described in any one of claims 1 to 12.

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