CN117255416A

CN117255416A - Data transmission method and terminal

Info

Publication number: CN117255416A
Application number: CN202211361060.7A
Authority: CN
Inventors: 黎建辉; 郑倩; 梁敬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-06-07
Filing date: 2022-11-01
Publication date: 2023-12-19

Abstract

The application discloses a data transmission method and a terminal, which belong to the technical field of communication, and the data transmission method in the embodiment of the application comprises the following steps: when there are a plurality of candidate receiving terminals or candidate receiving terminal groups in the transmitting terminal, the transmitting terminal selects a target receiving terminal or target receiving terminal group from the plurality of candidate receiving terminals or candidate receiving terminal groups according to the CAPC value of the MAC CE or the CAPC value of the logical channel corresponding to the candidate receiving terminal or the candidate receiving terminal group, and transmits data to the target receiving terminal or the target receiving terminal group.

Description

Data transmission method and terminal

Technical Field

The application belongs to the technical field of communication, and particularly relates to a data transmission method and a terminal.

Background

With the development of modern communication technology, an Unlicensed band (Unlicensed band) can be used as a supplement to an Licensed band (Licensed band) to help an operator to expand services, wherein data transmission can be directly performed between terminals on a physical layer under a side link (Sidelink in Unlicensed Spectrum, SL-U) scenario of the Unlicensed band. Currently, in a SL-U scenario, when there are multiple service data to be sent in a unicast or multicast manner in a sending terminal, the sending terminal needs to determine a receiving terminal or a receiving terminal group corresponding to each service data to be sent first, and after determining a receiving terminal or a receiving terminal group corresponding to each service data to be sent, an existing new air interface side link media access control element (NR Sidelink MAC) layer logical channel multiplexing technology is adopted to further determine to which receiving terminal or receiving terminal group the service data needs to be sent first.

In the related art, in the case of determining multiple candidate receiving terminals or candidate receiving terminal groups based on the NR sip MAC layer logical channel multiplexing technology, the transmitting terminal may not determine which candidate receiving terminal or candidate receiving terminal group the service data is finally transmitted to, which results in the service data being unable to be transmitted.

Disclosure of Invention

The embodiment of the application provides a data transmission method and a terminal, which can solve the problem that service data in a transmission terminal cannot be transmitted in a SL-U scene.

In a first aspect, a data transmission method is provided, applied to a transmitting terminal, and the method includes:

selecting a target receiving terminal or a target receiving terminal group from a plurality of candidate receiving terminals or candidate receiving terminal groups according to the CAPC value of the MAC CE or the CAPC value of the logic channel corresponding to the candidate receiving terminal or the candidate receiving terminal group when the plurality of candidate receiving terminals or the candidate receiving terminal groups exist in the transmitting terminal;

and sending data to the target receiving terminal or the target receiving terminal group.

In a second aspect, there is provided a data transmission apparatus applied to a transmission terminal, the apparatus comprising:

a selection module, configured to, when a transmitting terminal has a plurality of candidate receiving terminals or candidate receiving terminal groups, select a target receiving terminal or target receiving terminal group from the plurality of candidate receiving terminals or candidate receiving terminal groups according to a caps value of a MAC CE or a caps value of a logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group;

And the sending module is used for sending data to the target receiving terminal or the target receiving terminal group.

In a third aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a fourth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method according to the first aspect.

In a fifth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute programs or instructions for implementing the method according to the first aspect.

In a sixth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to carry out the steps of the method according to the first aspect.

In the embodiment of the present application, when there are multiple candidate receiving terminals or candidate receiving terminal groups in the transmitting terminal, the transmitting terminal may first select one target receiving terminal or target receiving terminal group from the multiple candidate receiving terminals or candidate receiving terminal groups according to the caps value of the MAC CE or the caps value of the logical channel corresponding to the candidate receiving terminal or the candidate receiving terminal group in the transmitting terminal; and then transmits the data to the target receiving terminal or the target receiving terminal group. Compared with the prior art, in the embodiment of the application, when the number of the candidate receiving terminals or the candidate receiving terminal groups is multiple, the sending terminal can further refer to the CAPC value of the MAC CE or the CAPC value of the logic channel corresponding to the candidate receiving terminal or the candidate receiving terminal group to select one target receiving terminal or the target receiving terminal group for data transmission, so that normal transmission of service data in the sending terminal can be ensured.

Drawings

Fig. 1 is a block diagram of a wireless communication system applicable in an embodiment of the present application.

Fig. 2 is a schematic diagram of uplink transmission, downlink transmission and sidelink transmission in the embodiment of the present application;

fig. 3 is a flowchart of a data transmission method in an embodiment of the present application;

fig. 4 is a block diagram of a data transmitting apparatus according to an embodiment of the present application;

fig. 5 is a block diagram of a communication device according to an embodiment of the present application;

fig. 6 is a schematic hardware structure of a terminal implementing various embodiments of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but these techniques may also be applied to applications other than NR system applications, such as 6th generation (6 g) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm Computer, a netbook, an Ultra-mobile personal Computer (Ultra-Mobile Personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented Reality (Augmented Reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (Personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is described by way of example, and the specific type of the base station is not limited.

In order to facilitate understanding of the data transmission method according to the embodiments of the present application, the following related art will be described:

1. new air interface (NewRadio in Unlicensed Spectrum, NR-U) channel access mechanism for unlicensed bands

To keep pace with NR deployments and maximize as much as possible unlicensed access based on NR, unlicensed bands may operate in the 5GHz, 37GHz and 60GHz bands. Since unlicensed bands are shared by multiple technologies (RATs), such as wireless communication technology (WiFi), radar, long term evolution-licensed assisted access (Long Term Evolution-license Assisted Access, LTE-LAA), etc., unlicensed bands need to meet certain rules when used to ensure that all devices can use the resources fairly, such as listen-before-talk (Listen Before Talk, LBT), maximum channel occupancy time (Maximum Channel Occupancy Time, MCOT), etc. That is, when the transmitting node needs to transmit information, it needs to make LBT first to perform power Detection (ED) on surrounding nodes, and when the detected power is lower than a threshold, it considers that the channel is empty (IDLE), and the transmitting node can transmit. Otherwise, the channel is considered as busy, and the transmission node cannot transmit. The transmission node may be a base station, a UE, a WiFi wireless Access Point (AP), or the like.

After the transmission node starts transmission, the occupied COT cannot exceed the MCOT. Furthermore, according to the rule of occupied bandwidth (Occupied Channel Bandwidth, OCB), on unlicensed bands, a transmitting node occupies at least 70% (i.e. 60 GHz) or 80% (i.e. 5 GHz) of the entire band at each transmission.

Among them, the types of LBT operations commonly used in NR-U can be classified into Type1, type2A, type B and Type2C. Type1 LBT is a channel interception mechanism based on back-off, and when a transmission node detects that a channel is busy, the transmission node performs back-off, and continues interception until the channel is empty; type2C is that the transmitting node does not make LBT, i.e., no LBT or immediately transmit (immediate transmission); type2A and Type2B LBT are one-time LBT (one-shot LBT), i.e. a node makes one LBT before transmission, if the channel is empty, it transmits, if the channel is busy, it does not transmit, and the difference between them is that: type2A makes LBT within 25us, which is suitable for shared channel occupation time (Channel Occupancy Time, COT), and the interval (gap) between two transmissions is 25us or more, while Type2B makes LBT within 16us, which is suitable for shared COT, and the gap between two transmissions is 16us or more.

In this embodiment of the present application, the transmitting terminal mainly performs Type1 LBT operation.

2. Sharing of COT

In the NR-U system, after the base station initiates COT, resources in the COT can be used for downlink transmission, and resources in the COT can be shared for UE for uplink transmission. When the resources in the COT are shared to perform uplink transmission for the UE, the channel access mode that the UE can use is Type 2A LBT,Type 2B LBT or Type 2C LBT.

After the UE initiates the COT using the Type1 LBT, resources in the COT may be used for uplink transmission, and resources in the COT may be shared to the base station for downlink transmission. In an NR-U system, the base station sharing the UE initiated COT includes two cases: one case is the COTs of the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) shared by the base stations for scheduling; another case is the COT of PUSCH where the base station shares a scheduling-free grant.

3. Regarding channel access priority types (Channel access priority class, CAPC)

The eNB/gNB/UE must determine a CAPC value before preempting the channel and look up a table based thereon to determine the window parameters for LBT operation for channel access. In the NR-U system, the value of the cap is p=1 to 4, where p=1 represents the highest priority, and the LBT window corresponding to the p=1 is shorter than other priorities, but the maximum occupied COT length is also correspondingly shorter, which represents a certain degree of fairness of preempting channels by different devices.

In the NR-U system, the cap value may be determined by predefined configuration, base station configuration, etc. according to the bearer division, and specifically, when the UE in the NR-U sends data to the base station, the cap value on which the UE depends for LBT operation may be configured by the base station because the UE is necessarily in a radio resource control Connected state (Radio Resource Control Connected, rrc_connected).

3. The side link (Sidelink in Unlicensed Spectrum, SL-U) channel access mechanism SL transmission for unlicensed bands, i.e. data transmission between UEs directly on the physical layer (as shown in fig. 2). LTE SL is broadcast-based communication and can be used to support basic security class communications for internet of vehicles (vehicle to everything, V2X), but is not applicable to other higher-level V2X services. While 5G NR systems support more advanced SL transmission designs, e.g., unicast, multicast, or multicast, etc., so that more comprehensive traffic types can be supported.

In R16, NR SL includes the following channels:

a physical side link control channel (Physical Sidelink Control Channel, PSCCH);

a physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH);

a physical sidelink broadcast channel (Physical Sidelink Broadcast Channel, PSBCH);

A physical sidelink feedback channel (Physical Sidelink Discovery Feedback Channel, PSFCH);

wherein, PSSCH uses sub-channel as unit to distribute resource, and uses continuous resource distribution mode in frequency domain; the time domain resource of the PSCCH is the number of symbols configured by a high layer, the frequency domain size is a parameter configured by the high layer, the frequency domain resource limit of the PSCCH is less than or equal to the size of one sub-channel, and the PSCCH is positioned in the range of the lowest sub-channel of the PSSCH.

4. Regarding quality of service flows (Quality of Service Flow, qoS flows), quality of service configurations (Quality of Service Profile, qoS Profile), side link radio bearers (Sidelink Radio Bearer, SLRB)

QoS Flow is the finest QoS differentiation granularity in a protocol data unit (Protocol Data Unit, PDU) session.

The QoS Profile is a file of configuration information for describing various parameters of the QoS Flow.

The SL UE in rrc_connected state may access the network and report the sidinkueinformation nr information to the base station when SL transmission (transmission) is required, where the information carries up to 32 SL UEs or multicast transmission resource requests, and each resource request includes a SL QoS Flow ID and a SL QoS Profile of up to 64 SL QoS flows. Accordingly, the base station may then indicate to the UE which SL QoS Flow IDs to map to each SLRB in the service data adaptation protocol (Service Data Adaption Protocol, SDAP) configuration of that SLRB in the SLRB configuration of the RRC reconfiguration message.

The SL UE in rrc_idle state may obtain the network-to-cell SLRB configuration information from the system information block (System Information Block, SIB) of its camping cell, each SLRB in the SLRB configuration information having some SL QoS flows mapped to the bearer and the SL QoS profiles of the SL QoS flows.

It is understood that, to distinguish from NR-U, the above SL UE, SL transmission, SL QoS Flow ID, SL QoS Profile, SLRB refer to UE, transmission, qoS Flow ID, qoS Profile, and radio bearer in the SL system in order.

Fifthly, regarding the quality of service identifier (PC 5QI, PQI) of the fifth generation mobile communication technology of PC5

PQI is abbreviated as PC5 5QI, where PC5 is abbreviated as communication link between terminals in SL-U scenario, and 5QI is abbreviated as 5G QoS Identifier.

The data transmission method provided by the embodiment of the application is described in detail below by some embodiments and application scenarios thereof with reference to the accompanying drawings.

Fig. 3 is a flowchart of a data transmission method in an embodiment of the present application, which is applied to a transmitting terminal, as shown in fig. 3, and the method may include the following steps: step 301, and step 302, wherein,

in step 301, in the case where there are a plurality of candidate receiving terminals or candidate receiving terminal groups in the transmitting terminal, a target receiving terminal or target receiving terminal group is selected from the plurality of candidate receiving terminals or candidate receiving terminal groups according to the cap value of the MAC CE or the cap value of the logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group.

In this embodiment of the present application, when a transmission manner of data to be transmitted in a transmitting terminal is unicast, the data to be transmitted corresponds to an ID of a single receiving terminal, and a main body that receives the data to be transmitted is the single receiving terminal. When the transmission mode of the data to be transmitted in the transmitting terminal is multicast, the data to be transmitted corresponds to the ID of the multicast, and the main body for receiving the data to be transmitted is all terminals in the multicast, namely the receiving terminal group.

In consideration of that the network configures a cap value for a MAC CE or a logical channel of a transmitting terminal, where the configured cap value may reflect, to a certain extent, a priority of data to be transmitted in the MAC CE or the logical channel, in this embodiment of the present application, when the number of candidate receiving terminals or candidate receiving terminal groups is multiple, one of the multiple candidate receiving terminals or candidate receiving terminal groups may be selected as a target receiving terminal or terminal group from among the multiple candidate receiving terminals or candidate receiving terminal groups by referring to the cap value of the MAC CE or the cap value of the logical channel of the transmitting terminal corresponding to the candidate receiving terminal or the candidate receiving terminal group.

In some embodiments, considering that the highest priority logical channel is representative, for example, the priority of the data to be transmitted in the highest priority logical channel is generally higher, the network generally configures the caps value of the highest priority logical channel when configuring the caps value for the logical channel of the transmitting terminal, and accordingly, the step 301 may include the following steps: the target receiving terminal or target receiving terminal group is selected from a plurality of candidate receiving terminals or candidate receiving terminal groups according to the CAPC value of the MAC CE or the CAPC value of the highest priority logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group.

Wherein, under the condition that the MAC CEs or the highest priority logic channels corresponding to the plurality of candidate receiving terminals or the candidate receiving terminal groups are configured or associated with CAPC values, and the configured or associated CAPC values are the same, any candidate receiving terminal or candidate receiving terminal group is selected from the plurality of candidate receiving terminals or candidate receiving terminal groups to be used as a target receiving terminal or target receiving terminal group;

under the condition that the MAC CEs or the highest priority logic channels corresponding to the multiple alternative receiving terminals or the alternative receiving terminal groups are configured or associated with CAPC values and the configured or associated CAPC values are different, the alternative receiving terminal or the alternative receiving terminal group corresponding to the CAPC value with the highest priority or the lowest priority is determined to be a target receiving terminal or a target receiving terminal group;

in the case that only one of the plurality of candidate receiving terminals or candidate receiving terminal groups has a cap value configured or associated with a MAC CE or highest priority logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group, the candidate receiving terminal or candidate receiving terminal group configured or associated with the cap value is determined as a target receiving terminal or target receiving terminal group.

That is, when the network configures or associates the caps for all the MAC CEs or the highest priority logical channels that need to transmit data to the candidate receiving terminal or the candidate receiving terminal group in the transmitting terminal, if the caps configured or associated by the MAC CEs or the highest priority logical channels are the same, the transmitting terminal decides which receiving terminal or the target receiving terminal group to select; if the CAPC values configured or associated with the MAC CE or the logic channel with the highest priority are not the same, the sending terminal selects the MAC CE or the logic channel with the highest priority from the MAC CE or the logic channel with the highest priority, and takes at least one alternative receiving terminal or alternative receiving terminal group to which the selected MAC CE or the logic channel with the highest priority belongs as a further alternative receiving terminal or alternative receiving terminal group; if only one of the further alternative receiving terminals or the alternative receiving terminal groups is available, the sending terminal selects the alternative receiving terminal or the alternative receiving terminal group as a target receiving terminal or a target receiving terminal group; if there are a plurality of the above-mentioned further alternative receiving terminals or alternative receiving terminal groups, the transmitting terminal decides which one of the target receiving terminals or target receiving terminal groups is selected.

When the network configures or associates a cap value for only one MAC CE or highest priority logical channel among the transmitting terminals that needs to transmit data to the candidate receiving terminal or candidate receiving terminal group, the transmitting terminal selects the candidate receiving terminal or candidate receiving terminal group as the target receiving terminal or target receiving terminal group.

When the network configures or associates the cap value for some MAC CEs or logical channels with highest priority, which need to send data to the candidate receiving terminal or the candidate receiving terminal group, in the transmitting terminal, the processing manner is similar to the foregoing two processing manners, and will not be repeated herein.

In the embodiment of the present application, various situations of the cap value of the MAC CE and the cap value of the highest priority logical channel in the transmitting terminal may be considered, and different policies are provided according to different situations to determine the target receiving terminal or the target receiving terminal, so that the applicable scenario is wider.

In step 302, data is transmitted to a target receiving terminal or a target group of receiving terminals.

As can be seen from the above-described embodiment, in this embodiment, in a case where there are a plurality of candidate receiving terminals or candidate receiving terminal groups in the transmitting terminal, the transmitting terminal may first select one target receiving terminal or target receiving terminal group from the plurality of candidate receiving terminals or candidate receiving terminal groups according to the cap value of the MAC CE or the cap value of the logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group in the transmitting terminal; and then transmits the data to the target receiving terminal or the target receiving terminal group. Compared with the prior art, in the embodiment of the application, when the number of the candidate receiving terminals or the candidate receiving terminal groups is multiple, the sending terminal can further refer to the CAPC value of the MAC CE or the CAPC value of the logic channel corresponding to the candidate receiving terminal or the candidate receiving terminal group to select one target receiving terminal or the target receiving terminal group for data transmission, so that normal transmission of service data in the sending terminal can be ensured.

In another embodiment provided in the present application, the data transmission method provided may further include the following steps before step 301 in the embodiment shown in fig. 3: the sending terminal performs LBT operation according to the first CAPC value;

accordingly, the step 301 may include the following steps:

and under the condition that the LBT operation successfully preempts the channel, selecting a target receiving terminal or a target receiving terminal group from a plurality of candidate receiving terminals or candidate receiving terminal groups, wherein the priority of the CAPC value of the MAC CE corresponding to the target receiving terminal or the target receiving terminal group or the priority of the CAPC value of the highest priority logic channel is higher than or equal to the priority of the first CAPC value.

It may be seen that, in this embodiment of the present application, the target receiving terminal or the target receiving terminal group may be selected with reference to the relationship between the priority of the cap value of the MAC CE corresponding to the candidate receiving terminal or the candidate receiving terminal group, the priority of the cap value of the highest priority logical channel, and the priority of the first cap value, so as to ensure that the data to be transmitted corresponding to the candidate receiving terminal or the candidate receiving terminal group with a higher priority is preferentially transmitted.

Considering that in the SL-U scenario, before data is sent between terminals, a channel needs to be preempted based on the LBT mode, and the data can be sent after the preemption is successful, and the LBT window parameter on which the LBT operation depends is affected by the CAPC, so that before the sending terminal sends the data to the target receiving terminal or the target receiving terminal group, the sending terminal needs to determine the CAPC value on which the LBT operation depends. At present, a method for determining a CAPC value in an NR-U scene is disclosed in the related art, but the method for determining the CAPC value in a SL-U scene is not provided, so that the terminal cannot execute LBT operation.

In order to solve the above problem, in another embodiment provided in the present application, the data transmission method provided may further include the following steps (not shown in the figure) before step 302 in the embodiment shown in fig. 3: step 303, wherein,

in step 303, the QoS feature parameters of the QoS Flow of the first service are matched with the QoS Profile in the corresponding relationship, and the caps value corresponding to the QoS Flow of the first service is determined according to the matching result, where the corresponding relationship is a corresponding relationship between the QoS Profile and caps value configured by the network or agreed by the protocol, and the QoS Profile includes the QoS feature parameters.

In this embodiment of the present application, the correspondence may include a first correspondence or a second correspondence, where the first correspondence is a correspondence between QoS Profile configured by a network and a caps value corresponding to SLRBs, and the second correspondence is a correspondence between QoS Profile configured by a network or agreed by a protocol and a default caps value. The SLRB includes a default SLRB and/or a dedicated SLRB, and as a possible implementation, the corresponding SLRB may be a default SLRB because, in the first correspondence, the network may configure a mapping of a certain non-standard PQI service to the default SLRB for transmission, or because, when the network does not configure the first correspondence of a certain non-standard PQI service, the non-standard PQI service may be mapped to the default SLRB for transmission. As another possible implementation, in the second correspondence, the default cap value may be a default cap value agreed by a network configuration or a protocol, or may be a cap value corresponding to a default SLRB.

In consideration of that when the terminals communicate with each other in the SL-U scenario, the transmitting terminal may be in an idle state of radio resource control, where the network does not allocate a radio bearer for the QoS Flow of the transmitting terminal in the idle state, the transmitting terminal may acquire the first corresponding relationship related to the SL-U by using the network side device, for example, may acquire the first corresponding relationship related to the SL-U by using a system message of a camping cell.

In this embodiment of the present application, the first service may be a non-standard PQI service or a standard PQI service. Considering that the cap value of standard PQI service can be determined by referring to 5QI in NR-U, it is preferable that the first service is a non-standard PQI service.

In the embodiment of the present application, qoS feature parameters include: resource Type, priority Level, packet delay budget Packet Delay Budget, packet error rate Packet Error Rate, average Window Window and maximum packet capacity Max Data Burst Volume.

In the embodiment of the application, for the terminal to send the service data in the SL-U scene, a cap value may be selected from the corresponding relationship configured by the network or agreed by the protocol according to the QoS feature parameter of the QoS Flow associated with the service data to be sent as the cap value relied on by the LBT operation, so that the determination of the cap value in the SL-U scene may be implemented, and the terminal is ensured to normally execute the LBT operation.

In still another embodiment provided in the present application, the correspondence is a first correspondence, where the first correspondence is a correspondence between QoS Profile configured by the network and a cap value of a corresponding SLRB; accordingly, the step 303 may include the following steps (not shown in the figure): step 3031, and step 3032, wherein,

in step 3031, when the QoS feature parameter of the QoS Flow of the first service matches the QoS Profile in the first correspondence, the cap value of the SLRB corresponding to the QoS Profile matched in the first correspondence is determined as the cap value corresponding to the QoS Flow of the first service.

In this embodiment of the present application, the matching of the QoS feature parameter of the QoS Flow of the first service and the QoS Profile in the first correspondence may include two cases: in the first case, the QoS feature parameter of the QoS Flow of the first service is identical to the QoS feature parameter of the QoS Profile in the first correspondence; in the second case, the QoS feature parameter of the QoS Flow of the first service and the QoS feature parameter of the QoS Profile in the first correspondence are not identical but have the highest similarity.

For the first case, if the QoS Profile completely identical to the QoS feature parameter of the QoS Flow of the first service exists in the first correspondence, determining that the QoS feature parameter of the QoS Flow of the first service matches the QoS Profile in the first correspondence, and determining that the same QoS Profile in the first correspondence is the matched QoS Profile in the first correspondence.

For the second case, if the QoS Profile which is identical to the QoS feature parameter of the QoS Flow of the first service does not exist in the first correspondence, determining the QoS Profile matched in the first correspondence according to the QoS Profile with the highest similarity to the QoS feature parameter of the QoS Flow of the first service in the first correspondence.

That is, according to the QoS feature parameters of the QoS Flow of the first service, the QoS Profile identical to the QoS feature parameters of the QoS Flow of the first service is searched from the first correspondence, if the identical QoS Profile can be searched, the SLRB corresponding to the identical QoS Profile is further searched, and the cap value of the SLRB corresponding to the identical QoS Profile is determined as the cap value corresponding to the QoS Flow of the first service.

If the identical QoS Profile cannot be found, the closest QoS Profile (i.e., the QoS Profile with the highest similarity) is found, and then the SLRB corresponding to the closest QoS Profile is further found, in some embodiments, the step 3031 may include the following steps:

if the number of QoS profiles with the highest similarity is one, determining a cap value of the SLRB corresponding to the QoS Profile with the highest similarity as a cap value corresponding to the QoS Flow of the first service;

And under the condition that the number of the QoS profiles with the highest similarity is a plurality of, selecting one target QoS Profile from the QoS profiles with the highest similarity, and determining the CAPC value of the SLRB corresponding to the target QoS Profile as the CAPC value corresponding to the QoS Flow of the first service, wherein the target QoS Profile is the QoS Profile corresponding to the SLRB with the highest or lowest priority in the QoS profiles with the highest similarity.

When searching is performed according to the similarity, only the similarity of one of the QoS feature parameters in the first correspondence may be compared, or the similarity of a plurality of QoS feature parameters in the first correspondence may be compared. If a plurality of QoS profiles are compared, the QoS profiles can be sequentially compared according to a certain sequence, and finally the target QoS Profile is selected.

In an example, when selecting the QoS Profile with the highest similarity in the first correspondence, only Packet Delay Budget may be compared, i.e. the QoS Profile closest to Packet Delay Budget is selected as the matching QoS Profile in the first correspondence.

In one example, when selecting the QoS Profile with the highest similarity in the first correspondence, a plurality of QoS feature parameters may be compared, for example Packet Delay Budget and priority, that is, the QoS Profile with the closest priority to Packet Delay Budget is selected as the QoS Profile matched in the first correspondence.

In one example, the QoS Profile of the first correspondence may include QoS feature parameters that are compared in the following order:

-cs ₁ ＝Resource Type；

-cs ₂ ＝Priority Level；

-cs ₃ ＝Packet Delay Budget；

-cs ₄ ＝Packet Error Rate；

-cs ₅ ＝Averaging Window；

-cs ₆ ＝Max Data Burst Volume；

for example, SLRBs in the first correspondence constitute a SLRB complete set S ₀ The sending terminal adopts the following method: first according to cs ₁ =resource Type, from S ₀ Searching the SLRB mapped by the QoS Profile which is the same as the Resource Type of the QoS Flow of the first service, and obtaining a SLRB subset S ₁ The method comprises the steps of carrying out a first treatment on the surface of the Subsequently, according to cs ₂ =priority Level, from S ₁ Searching SLRB mapped by the same QoS Profile as the PrioritiyLevel of the QoS Flow of the first service to obtain a SLRB subset S ₂ The method comprises the steps of carrying out a first treatment on the surface of the Similarly, when the terminal cannot follow the stepsWhen determining a new SLRB subset, i.e. the terminal cannot be in the last determined SLRB subset S _n Find cp of QoS Flow with first traffic _n+1 When SLRBs mapped by the same QoS Profile, the terminal selects a final SLRB subset S _n A SLRB is defined.

If S _n Only one SLRB exists, and the terminal uses the CAPC value configured by the SLRB to preempt the channel; if S _n If there is more than one SLRB, the terminal uses the cap value corresponding to the SLRB with the highest or lowest priority to preempt the channel, and the terminal may also determine which SLRB to use to preempt the channel.

In the embodiment of the present application, various situations that the QoS feature parameter of the first service matches the QoS Profile in the first correspondence may be considered, and different policies are provided according to different situations to determine the caps value on which the LBT operation depends, so that the applicable scenario is wider.

In step 3032, in the event that the QoS Profile in the QoS Flow of the first service and the QoS Profile in the first correspondence do not match, the cap value corresponding to the QoS Flow of the first service is set to a default cap value.

In this embodiment of the present application, the sending terminal may determine, according to a correspondence between a QoS Profile configured by a network or agreed by a protocol and a default cap value, a default cap value corresponding to a QoS feature parameter of a QoS Flow of a first service, and determine the default cap value as a cap value corresponding to the QoS Flow of the first service.

For example, the network may configure: when Priority level=p in QoS feature parameters ₂ When the terminal adopts cap=n ₂ The channel is preempted.

In the embodiment of the present application, various situations of matching and not matching the QoS Profile of the first service with the QoS Profile in the first corresponding relationship may be considered, and according to different situations, different policies are provided to determine the caps value on which the LBT operation depends, so that the applicable scenario is wider.

In still another embodiment provided in the present application, the data transmission method provided may further include the following steps before step 301 in the embodiment shown in fig. 3: the sending terminal performs LBT operation according to the first CAPC value;

if the presence of data of the second service corresponding to the target receiving terminal or the target receiving terminal group in the MAC CE or the logical channel is detected before the preempting channel by the LBT operation is successful or after the persistent LBT failure occurs by the LBT operation, and the MAC CE or the logical channel is configured or associated with a cap value, and the priority of the configured or associated cap value is higher than the priority of the first cap value, executing at least one of the following: interrupting the current LBT operation, performing a MAC layer logical channel multiplexing operation based on the data of the second service, and performing an LBT operation based on the MAC CE or logical channel configuration or associated cap value.

It can be seen that, in the embodiment of the present application, when performing LBT operation for other services, if the target receiving terminal or the target receiving terminal group has a second service with a higher priority to be sent, the second service with a higher priority is sent preferentially, so as to ensure that the service with a high priority can be sent in time.

In still another embodiment provided in the present application, the caps value on which the LBT operation depends may be determined according to the type of the data to be transmitted, and for the data with higher priority, the caps value with higher priority is given, and accordingly, the provided data transmission method may further include the following steps before step 301 in the embodiment shown in fig. 3:

The data to be transmitted in the transmitting terminal is the following type of data: in the case of PSFCH, PSBCH or S-SSB, the CAPC value of the SLRB used when the data transmission is to be sent is determined to be the CAPC value of the highest priority.

It can be seen that, in the embodiment of the present application, for some data with higher priority, the highest priority CAPC may be configured for the data, so as to improve the probability of success of channel preemption, and further improve the success rate of sending the data.

According to the data transmission method provided by the embodiment of the application, the execution body can be a data transmission device. In the embodiment of the present application, a data transmission device provided in the embodiment of the present application will be described by taking a data transmission method performed by the data transmission device as an example.

Next, a description will be given of a data transmission apparatus provided in an embodiment of the present application.

Fig. 4 is a block diagram of a data transmission device according to an embodiment of the present application, which is applied to a transmitting terminal, as shown in fig. 4, a data transmission device 400 may include: a selection module 401 and a transmission module 402, wherein,

a selection module 401, configured to, in a case where there are a plurality of candidate receiving terminals or candidate receiving terminal groups in the transmitting terminal, select a target receiving terminal or target receiving terminal group from the plurality of candidate receiving terminals or candidate receiving terminal groups according to a caps value of a MAC CE or a caps value of a logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group;

A sending module 402, configured to send data to the target receiving terminal or the target receiving terminal group.

Alternatively, as an embodiment, the selecting module 401 may include:

a selecting sub-module, configured to select a target receiving terminal or a target receiving terminal group from a plurality of candidate receiving terminals or candidate receiving terminal groups according to a caps value of a MAC CE or a caps value of a highest priority logical channel corresponding to the candidate receiving terminal or the candidate receiving terminal group, in a case where the transmitting terminal has the candidate receiving terminals or the candidate receiving terminal groups.

Alternatively, as an embodiment, the selecting sub-module may include:

a first determining unit, configured to select, when the MAC CEs or highest priority logical channels corresponding to the plurality of candidate receiving terminals or candidate receiving terminal groups each configure or associate a cap value, and the configured or associated cap values are the same, an arbitrary candidate receiving terminal or candidate receiving terminal group from the plurality of candidate receiving terminals or candidate receiving terminal groups as a target receiving terminal or target receiving terminal group;

a second determining unit, configured to determine, as a target receiving terminal or a target receiving terminal group, an alternative receiving terminal or an alternative receiving terminal group corresponding to a highest priority or lowest priority cap value, where the MAC CEs or highest priority logical channels corresponding to the plurality of alternative receiving terminals or alternative receiving terminal groups each configure or associate a cap value, and the configured or associated cap values are different;

a third determining unit, configured to determine, as the target receiving terminal or the target receiving terminal group, the candidate receiving terminal or the candidate receiving terminal group configured or associated with the cap value, in the case that only one candidate receiving terminal or the candidate receiving terminal group among the plurality of candidate receiving terminals or the candidate receiving terminal groups is configured or associated with the cap value by the MAC CE or the highest priority logical channel corresponding to the candidate receiving terminal or the candidate receiving terminal group.

Optionally, as an embodiment, the data sending apparatus 400 may further include:

the first determining module is configured to match a QoS feature parameter of a QoS Flow of a first service with a QoS Profile in a corresponding relationship, and determine a caps value corresponding to the QoS Flow of the first service according to a matching result, where the corresponding relationship is a corresponding relationship between a QoS Profile configured by a network or agreed by a protocol and the caps value, and the QoS Profile includes the QoS feature parameter.

Optionally, as an embodiment, the correspondence includes a first correspondence, where the first correspondence is a correspondence between QoS Profile configured by a network and a cap value of a corresponding SLRB;

the first determining module may include:

a first determining submodule, configured to determine, when a QoS feature parameter of a QoS Flow of the first service matches a QoS Profile in the first correspondence, a caps value of an SLRB corresponding to the QoS Profile matched in the first correspondence as a caps value corresponding to the QoS Flow of the first service;

a second determining sub-module, configured to set a cap value corresponding to the QoS Flow of the first service to a default cap value in a case where the QoS feature parameter of the QoS Flow of the first service and the QoS Profile in the first correspondence do not match.

Optionally, as an embodiment, the first determining module may further include:

a third determining submodule, configured to determine, when the QoS Profile completely identical to the QoS feature parameter of the QoS Flow of the first service exists in the first correspondence, the identical QoS Profile in the first correspondence as a QoS Profile matched in the first correspondence; or,

and a fourth determining submodule, configured to determine, when the QoS Profile completely identical to the QoS feature parameter of the QoS Flow of the first service does not exist in the first correspondence, a matched QoS Profile in the first correspondence according to the QoS Profile with the highest similarity to the QoS feature parameter of the QoS Flow of the first service in the first correspondence.

Optionally, as an embodiment, the first determining sub-module may include:

a fourth determining unit, configured to determine, when the number of QoS profiles with highest similarity is one, a caps value of an SLRB corresponding to the QoS Profile with highest similarity as a cap value corresponding to a QoS Flow of the first service;

a fifth determining unit, configured to select a target QoS Profile from a plurality of QoS profiles with highest similarity, and determine a caps value of an SLRB corresponding to the target QoS Profile as a caps value corresponding to a QoS Flow of the first service, where the target QoS Profile is a QoS Profile corresponding to an SLRB with highest or lowest priority among the QoS profiles with highest similarity.

the first monitoring module is used for performing LBT operation with a first CAPC value;

the selection submodule includes:

a sixth determining unit, configured to select a target receiving terminal or a target receiving terminal group from a plurality of the candidate receiving terminals or candidate receiving terminal groups, where a priority of a cap value of a MAC CE or a priority of a cap value of a highest priority logical channel corresponding to the target receiving terminal or target receiving terminal group is higher than or equal to a priority of the first cap value, in a case that the LBT operation successfully preempts a channel.

the second monitoring module is used for performing LBT operation with the first CAPC value;

a processing module, configured to execute at least one of the following if, before the LBT operation is successful in preempting a channel or after the LBT operation is continued in failure, it is detected that there is data of a second service corresponding to the target receiving terminal or the target receiving terminal group in a MAC CE or a logical channel, and the MAC CE or the logical channel is configured or associated with a cap value, and a priority of the configured or associated cap value is higher than a priority of the first cap value: interrupting the current LBT operation, performing a MAC layer logical channel multiplexing operation based on the data of the second service, and performing an LBT operation based on the MAC CE or logical channel configuration or associated CAPC value.

a second determining module, configured to determine, in the transmitting terminal, that data to be transmitted is data of the following type: in case of PSFCH, PSBCH or S-SSB, determining the CAPC value of the SLRB used in the data transmission to be sent as the CAPC value of the highest priority.

Optionally, as an embodiment, the first service is a non-standard PQI service.

The data transmitting device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The data transmitting device provided in this embodiment of the present application can implement each process implemented by the method embodiment of fig. 3, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Optionally, as shown in fig. 5, the embodiment of the present application further provides a communication device 500, including a processor 501 and a memory 502, where the memory 502 stores a program or an instruction that can be executed on the processor 501, for example, when the communication device 500 is a terminal, the program or the instruction is executed by the processor 501 to implement each step of the foregoing embodiment of the data transmission method, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

As shown in fig. 6, the terminal 600 includes, but is not limited to: at least some of the components of the radio frequency unit 601, the network module 602, the audio output unit 603, the input unit 604, the sensor 605, the display unit 606, the user input unit 607, the interface unit 608, the memory 609, and the processor 610, etc.

Those skilled in the art will appreciate that the terminal 600 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 610 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 6 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be understood that in the embodiment of the present application, the input unit 604 may include a graphics processing unit (Graphics Processing Unit, GPU) 6041 and a microphone 6042, and the graphics processor 6041 processes image data of still pictures or video obtained by an image capturing apparatus (such as a camera) in a video capturing mode or an image capturing mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts of a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 601 may transmit the downlink data to the processor 610 for processing; in addition, the radio frequency unit 601 may send uplink data to the network side device. Typically, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 609 may be used to store software programs or instructions and various data. The memory 609 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 609 may include volatile memory or nonvolatile memory, or the memory 609 may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (ProgrammableROM, PROM), an erasable programmable Read-only memory (ErasablePROM, EPROM), an electrically erasable programmable Read-only memory (ElectricallyEPROM, EEPROM), or a flash memory, among others. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1209 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 610 may include one or more processing units; optionally, the processor 610 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 610.

A processor 610, configured to, in a case where there are a plurality of candidate receiving terminals or candidate receiving terminal groups of a transmitting terminal, select a target receiving terminal or target receiving terminal group from the plurality of candidate receiving terminals or candidate receiving terminal groups according to a cap value of a MAC CE or a cap value of a logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group; and sending data to the target receiving terminal or the target receiving terminal group.

It can be seen that, in this embodiment of the present application, when the number of the candidate receiving terminals or the candidate receiving terminal groups is multiple, the transmitting terminal may further refer to the cap value of the MAC CE or the cap value of the logical channel corresponding to the candidate receiving terminal or the candidate receiving terminal group, to select one target receiving terminal or the target receiving terminal group from among them for performing data transmission, so that normal transmission of service data in the transmitting terminal may be ensured.

Optionally, as an embodiment, the processor 610 is further configured to select the target receiving terminal or the target receiving terminal group from a plurality of the candidate receiving terminals or the candidate receiving terminal groups according to a cap value of a MAC CE or a cap value of a highest priority logical channel corresponding to the candidate receiving terminal or the candidate receiving terminal group.

Optionally, as an embodiment, the processor 610 is further configured to, when MAC CEs or highest priority logical channels corresponding to the multiple candidate receiving terminals or candidate receiving terminal groups each configure or associate a cap value, and the configured or associated cap values are the same, select, by the sending terminal, an arbitrary candidate receiving terminal or candidate receiving terminal group from the multiple candidate receiving terminals or candidate receiving terminal groups as a target receiving terminal or target receiving terminal group;

under the condition that the MAC CEs or the highest priority logic channels corresponding to the multiple alternative receiving terminals or the alternative receiving terminal groups are configured or associated with CAPC values, and the configured or associated CAPC values are different, the sending terminal determines the alternative receiving terminal or the alternative receiving terminal group corresponding to the CAPC value with the highest priority or the lowest priority as a target receiving terminal or a target receiving terminal group;

In the case that only one candidate receiving terminal or candidate receiving terminal group in the plurality of candidate receiving terminals or candidate receiving terminal groups is configured or associated with a cap value by a MAC CE or a highest priority logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group, the transmitting terminal determines the candidate receiving terminal or candidate receiving terminal group configured or associated with the cap value as a target receiving terminal or target receiving terminal group.

Optionally, as an embodiment, the processor 610 is further configured to match, before sending data to the target receiving terminal or the target receiving terminal group, qoS feature parameters of the QoS Flow of the first service with QoS profiles in a corresponding relationship, and determine, according to a matching result, a cap value corresponding to the QoS Flow of the first service, where the corresponding relationship is a correspondence between a QoS Profile configured by a network or agreed by a protocol and a cap value, and the QoS Profile includes the QoS feature parameters.

the processor 610 is further configured to determine, when the QoS feature parameter of the QoS Flow of the first service matches the QoS Profile in the first correspondence, a cap value of the SLRB corresponding to the QoS Profile matched in the first correspondence as a cap value corresponding to the QoS Flow of the first service;

And setting a CAPC value corresponding to the QoS Flow of the first service as a default CAPC value in the case that the QoS characteristic parameter of the QoS Flow of the first service and the QoS Profile in the first corresponding relation are not matched.

Optionally, as an embodiment, the processor 610 is further configured to determine, when the QoS Profile that is identical to the QoS feature parameter of the QoS Flow of the first service exists in the first correspondence, the identical QoS Profile in the first correspondence as the matched QoS Profile in the first correspondence; or,

and under the condition that the QoS Profile which is completely the same as the QoS characteristic parameter of the QoS Flow of the first service does not exist in the first corresponding relation, determining the matched QoS Profile in the first corresponding relation according to the QoS Profile with the highest QoS characteristic parameter similarity with the QoS Flow of the first service in the first corresponding relation.

Optionally, as an embodiment, the processor 610 is further configured to determine, when the number of QoS profiles with highest similarity is one, a cap value of an SLRB corresponding to the QoS Profile with highest similarity as a cap value corresponding to a QoS Flow of the first service;

Optionally, as an embodiment, the processor 610 is further configured to perform an LBT operation with the first caps value; and under the condition that the LBT operation successfully preempts the channel, selecting a target receiving terminal or a target receiving terminal group from a plurality of candidate receiving terminals or candidate receiving terminal groups, wherein the priority of the CAPC value of the MAC CE corresponding to the target receiving terminal or the target receiving terminal group or the priority of the CAPC value of the highest priority logic channel is higher than or equal to the priority of the first CAPC value.

Optionally, as an embodiment, the processor 610 is further configured to perform an LBT operation with the first caps value; if the presence of data of the second service corresponding to the target receiving terminal or the target receiving terminal group in the MAC CE or the logic channel is detected before the channel preemption by the LBT operation succeeds or after the persistent LBT failure occurs by the LBT operation, and the MAC CE or the logic channel is configured or associated with a cap value, and the configured or associated cap value has a higher priority than the first cap value, executing at least one of the following: interrupting the current LBT operation, performing a MAC layer logical channel multiplexing operation based on the data of the second service, and performing an LBT operation based on the MAC CE or logical channel configuration or associated CAPC value.

Optionally, as an embodiment, the processor 610 is further configured to send, in the sending terminal, data of the following type: in case of PSFCH, PSBCH or S-SSB, determining the CAPC value of the SLRB used in the data transmission to be sent as the CAPC value of the highest priority.

Optionally, as an embodiment, the first service is a non-standard PQI service.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the processes of the foregoing data transmission method embodiment are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used for running a program or an instruction, implementing each process of the above data transmission method embodiment, and achieving the same technical effect, so as to avoid repetition, and no redundant description is provided herein.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the foregoing embodiments of the data transmission method, and the same technical effects are achieved, so that repetition is avoided, and details are not repeated herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A data transmission method, comprising:

in the case that a plurality of alternative receiving terminals or alternative receiving terminal groups exist in a sending terminal, the sending terminal selects a target receiving terminal or a target receiving terminal group from the plurality of alternative receiving terminals or alternative receiving terminal groups according to a channel access priority type CAPC value of a media access control element (MAC CE) or a CAPC value of a logic channel corresponding to the alternative receiving terminal or the alternative receiving terminal group;

the transmitting terminal transmits data to the target receiving terminal or the target receiving terminal group.

2. The method according to claim 1, wherein the transmitting terminal selects a target receiving terminal or a target receiving terminal group from a plurality of the candidate receiving terminals or candidate receiving terminal groups according to a channel access priority type cap value of a MAC CE or a cap value of a logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group, comprising:

the transmitting terminal selects a target receiving terminal or a target receiving terminal group from a plurality of candidate receiving terminals or candidate receiving terminal groups according to the CAPC value of the MAC CE or the CAPC value of the highest priority logic channel corresponding to the candidate receiving terminal or the candidate receiving terminal group.

3. The method according to claim 2, wherein the transmitting terminal selects a target receiving terminal or a target receiving terminal group from a plurality of the candidate receiving terminals or candidate receiving terminal groups according to a cap value of a MAC CE or a cap value of a highest priority logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group, comprising:

under the condition that the MAC CEs or the highest priority logic channels corresponding to the multiple candidate receiving terminals or the candidate receiving terminal groups are configured or associated with CAPC values, and the configured or associated CAPC values are the same, the sending terminal selects any candidate receiving terminal or candidate receiving terminal group from the multiple candidate receiving terminals or candidate receiving terminal groups as a target receiving terminal or target receiving terminal group;

In the case that only one candidate receiving terminal or candidate receiving terminal group in the plurality of candidate receiving terminals or candidate receiving terminal groups is configured or associated with a cap value by the MAC CE or highest priority logical channel corresponding to the candidate receiving terminal or candidate receiving terminal group, the transmitting terminal determines the candidate receiving terminal or candidate receiving terminal group configured or associated with the cap value as a target receiving terminal or target receiving terminal group.

4. The method of claim 1, wherein before the transmitting terminal transmits data to the target receiving terminal or target receiving terminal group, the method further comprises:

the sending terminal matches the QoS characteristic parameter of the QoS Flow of the first service with the QoS configuration QoS Profile in the corresponding relation, and determines the CAPC value corresponding to the QoS Flow of the first service according to the matching result, wherein the corresponding relation is the corresponding relation between the QoS Profile and the CAPC value configured by a network or agreed by a protocol, and the QoS Profile comprises the QoS characteristic parameter.

5. The method of claim 4, wherein the correspondence includes a first correspondence, the first correspondence being a correspondence of a network configured QoS Profile and a cap value of a corresponding side link radio bearer SLRB;

The sending terminal matches the QoS characteristic parameter of the QoS Flow of the first service with the QoS configuration QoS Profile in the corresponding relation, and determines the CAPC value corresponding to the QoS Flow of the first service according to the matching result, comprising:

when the QoS feature parameter of the QoS Flow of the first service matches the QoS Profile in the first correspondence, the sending terminal determines a cap value of the SLRB corresponding to the QoS Profile matched in the first correspondence as a cap value corresponding to the QoS Flow of the first service;

in the case that the QoS feature parameter of the QoS Flow of the first service and the QoS Profile in the first correspondence do not match, the transmitting terminal sets a cap value corresponding to the QoS Flow of the first service to a default cap value.

6. The method according to claim 5, wherein the transmitting terminal determines, in a case where the QoS feature parameter of the QoS Flow of the first service matches the QoS Profile in the first correspondence, a cap value of the SLRB corresponding to the QoS Profile matched in the first correspondence as a cap value corresponding to the QoS Flow of the first service, the method further comprising:

In the case that the first corresponding relation has the QoS Profile which is identical to the QoS characteristic parameter of the QoS Flow of the first service, the sending terminal determines the identical QoS Profile in the first corresponding relation as the matched QoS Profile in the first corresponding relation; or,

7. The method of claim 6, wherein the transmitting terminal determining the cap value of the SLRB corresponding to the QoS Profile matched in the first correspondence as the cap value corresponding to the QoS Flow of the first service comprises:

in the case that the number of QoS profiles with the highest similarity is one, the sending terminal determines the caps value of the SLRB corresponding to the QoS Profile with the highest similarity as the caps value corresponding to the QoS Flow of the first service;

and under the condition that the number of the QoS profiles with the highest similarity is a plurality of, the sending terminal selects one target QoS Profile from the QoS profiles with the highest similarity, and determines the CAPC value of the SLRB corresponding to the target QoS Profile as the CAPC value corresponding to the QoS Flow of the first service, wherein the target QoS Profile is the QoS Profile corresponding to the SLRB with the highest or lowest priority in the QoS profiles with the highest similarity.

8. The method according to claim 2, wherein the transmitting terminal selects a target receiving terminal or target group of receiving terminals from a plurality of the candidate receiving terminals or candidate groups of receiving terminals based on the cap value of the MAC CE or the cap value of the highest priority logical channel corresponding to the candidate receiving terminal or candidate group of receiving terminals, the method further comprising:

the sending terminal performs listen-before-send (LBT) operation by using a first CAPC value;

the transmitting terminal selects a target receiving terminal or a target receiving terminal group from a plurality of candidate receiving terminals or candidate receiving terminal groups according to the CAPC value of the MAC CE or the CAPC value of the highest priority logic channel corresponding to the candidate receiving terminal or the candidate receiving terminal group, and the method comprises the following steps:

and under the condition that the LBT operation successfully preempts the channel, the sending terminal selects a target receiving terminal or a target receiving terminal group from a plurality of candidate receiving terminals or candidate receiving terminal groups, wherein the priority of the CAPC value of the MAC CE corresponding to the target receiving terminal or the target receiving terminal group or the priority of the CAPC value of the highest priority logic channel is higher than or equal to the priority of the first CAPC value.

9. The method according to claim 1, wherein the transmitting terminal selects a target receiving terminal or a target group of receiving terminals from a plurality of the candidate receiving terminals or candidate groups of receiving terminals based on a channel access priority type cap value of a MAC CE or a cap value of a logical channel corresponding to the candidate receiving terminal or candidate group of receiving terminals, the method further comprising:

the sending terminal performs LBT operation with a first CAPC value;

if the transmitting terminal detects that there is data of a second service corresponding to the target receiving terminal or the target receiving terminal group in a MAC CE or a logical channel before the preempting of the channel by the LBT operation is successful or after the persistent LBT failure occurs by the LBT operation, and the MAC CE or the logical channel is configured or associated with a cap value, and the configured or associated cap value has a higher priority than the first cap value, the transmitting terminal executes at least one of the following: interrupting the current LBT operation, performing a MAC layer logical channel multiplexing operation based on the data of the second service, and performing an LBT operation based on the MAC CE or logical channel configuration or associated CAPC value.

10. The method of claim 1, wherein before the transmitting terminal determines the target receiving terminal or the target receiving terminal group, the method further comprises:

the data to be transmitted in the transmitting terminal are the following types of data: in the case of the physical sidelink feedback channel PSFCH, the physical sidelink broadcast channel PSBCH, or the sidelink synchronization signal block S-SSB, the transmitting terminal determines the cap value of the SLRB used when the data transmission is to be transmitted to be the cap value of the highest priority.

11. The method of claim 4, wherein the first service is a non-standard side link communication link fifth generation mobile communication technology quality of service identification, PQI, service.

12. A data transmission apparatus, comprising:

13. The apparatus of claim 12, wherein the selection module comprises:

14. The apparatus of claim 13, wherein the selection submodule comprises:

a first determining unit, configured to select, when MAC CEs or highest priority logical channels corresponding to the plurality of candidate receiving terminals or candidate receiving terminal groups are configured or associated with cap values, and the configured or associated cap values are the same, any candidate receiving terminal or candidate receiving terminal group from the plurality of candidate receiving terminals or candidate receiving terminal groups as a target receiving terminal or target receiving terminal group;

a second determining unit, configured to determine, as a target receiving terminal or a target receiving terminal group, an alternative receiving terminal or an alternative receiving terminal group corresponding to a highest priority or lowest priority cap value, where the MAC CEs or highest priority logical channels corresponding to the plurality of alternative receiving terminals or alternative receiving terminal groups are configured or associated with cap values, and the configured or associated cap values are different;

A third determining unit, configured to determine, as the target receiving terminal or the target receiving terminal group, the candidate receiving terminal or the candidate receiving terminal group configured or associated with the cap value, in the case where only one candidate receiving terminal or the candidate receiving terminal group among the plurality of candidate receiving terminals or the candidate receiving terminal groups is configured or associated with the cap value by the MAC CE or the highest priority logical channel corresponding to the candidate receiving terminal or the candidate receiving terminal group.

15. The apparatus of claim 12, wherein the apparatus further comprises:

16. The apparatus of claim 15, wherein the correspondence comprises a first correspondence, the first correspondence being a correspondence of QoS Profile configured by a network and caps values of corresponding SLRBs;

the first determining module includes:

17. The apparatus of claim 16, wherein the first determination module further comprises:

18. The apparatus of claim 17, wherein the first determination submodule comprises:

19. The apparatus of claim 13, wherein the apparatus further comprises:

the selection submodule includes:

20. The apparatus of claim 12, wherein the apparatus further comprises:

21. The apparatus of claim 12, wherein the apparatus further comprises:

22. The apparatus of claim 15, wherein the first service is a non-standard PQI service.

23. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the data transmission method of any one of claims 1 to 11.

24. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions which, when executed by a processor, implement the steps of the data transmission method according to any one of claims 1 to 11.