CN119383658A

CN119383658A - Data transmission method, device and equipment

Info

Publication number: CN119383658A
Application number: CN202310930090.3A
Authority: CN
Inventors: 张惠英; 徐昊
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2025-01-28

Abstract

The application provides a data transmission method, a device and equipment, wherein the data transmission method comprises the steps of sending first information corresponding to at least one first logic channel group LCG to network equipment, wherein the first LCG is LCG of a non-network configured through link SL, the SL is associated with a destination layer 2 identifier or a destination layer 2 index, and the first information comprises priority and/or quality of service QoS information. The scheme can support the network equipment to accurately acquire the first information so as to accurately allocate resources based on the first information later, realize Sidelink resource scheduling of a non-network configured logic channel, and well solve the problem that Sidelink resource scheduling cannot be accurately realized in the prior art.

Description

Data transmission method, device and equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, and device.

Background

The existing link (SL) resource allocation mechanism in the SL communication is divided into two types, i.e., a network scheduling mode 1 and a UE autonomous selection mode 2. The mode 1 refers to that the base station configures SL transmission parameters for a transmitting User Equipment or terminal (UE), and requests SL resources to the base station through a through link buffer status report (sidelink buffer status report, SL-BSR) when the UE has SL data to transmit, and the base station schedules the SL transmission resources for the UE based on information contained in the SL-BSR. Mode 2 is that the UE selects SL transmission resources according to the sensing result from the SL transmission resource pool configured by the pre-configuration or system information block (System Information Block, SIB) configuration or the base station through dedicated signaling.

Supporting terminal-to-terminal (U2U) relay is now discussed. For U2Urelay, even if all participating UEs are on the network, U2U relay that does not require network participation should be supported. Further, the network participates in the U2U relay, or may only participate in the SL resource allocation, but does not participate in the U2Urelay connection establishment and transmission process. The establishment and configuration of the U2U relay connection are performed by the UE participating in the U2U relay, wherein the UE in the connection state of the network can schedule SL resources by the network in a mode 1 for transmitting the U2U relay service. For this scenario, since the configuration of the end-to-end radio bearer of the U2U relay and the transmission channel per hop are both UE generated, not base station configured, the base station lacks information to schedule SL resources.

Therefore, the prior art has the problems that Sidelink resource scheduling cannot be accurately realized.

Disclosure of Invention

The application aims to provide a data transmission method, a data transmission device and data transmission equipment, which are used for solving the problem that Sidelink resource scheduling cannot be accurately realized in the prior art.

In order to solve the above technical problems, an embodiment of the present application provides a data transmission method, applied to a first terminal, including:

Transmitting first information corresponding to at least one first logical channel group LCG to network equipment;

the first LCG is the LCG of a direct link SL of non-network configuration, wherein the SL is associated with a destination layer 2 identifier or a destination layer 2 index;

The first information comprises priority and/or quality of service QoS information.

Optionally, the first terminal is a source terminal, a relay terminal or a target terminal in a terminal-to-terminal relay link.

Optionally, the method further comprises:

Receiving resource scheduling information sent by the network equipment;

And carrying out data transmission according to the resource scheduling information.

Optionally, the method further comprises:

Under the condition that first data corresponding to a target LCG exist to be transmitted, according to the first information, a SL buffer status report corresponding to the first data is sent to the network equipment;

the receiving the resource scheduling information sent by the network device includes:

receiving resource scheduling information sent by the network equipment according to the first information and the SL buffer status report;

The data transmission according to the resource scheduling information comprises the following steps:

and carrying out transmission of the first data according to the resource scheduling information.

Optionally, the non-network configured through link SL includes an SL configured by the first terminal, or an SL configured by the other terminal for the first terminal.

Optionally, the sending, to the network device, first information corresponding to at least one first logical channel group LCG includes:

And sending first information corresponding to at least one first logical channel group LCG to the network equipment through Radio Resource Control (RRC) signaling or a Media Access Control (MAC) CE.

The embodiment of the application also provides a data transmission method which is applied to the network equipment and comprises the following steps:

Receiving first information corresponding to at least one first logical channel group LCG;

the first information includes priority and/or QoS information.

Optionally, the method further comprises:

According to the first information, carrying out SL resource scheduling to obtain resource scheduling information;

and sending the resource scheduling information to the first terminal.

Optionally, the performing SL resource scheduling according to the first information to obtain resource scheduling information includes:

carrying out SL resource scheduling according to the priority in the first information to obtain resource scheduling information;

Or determining priority according to QoS information in the first information, and carrying out SL resource scheduling according to the priority to obtain resource scheduling information.

Optionally, the method further comprises:

Receiving a SL buffer status report corresponding to first data sent by the terminal, wherein the first data is data corresponding to a target LCG, and the target LCG is a first LCG contained in the SL buffer status report;

And carrying out SL resource scheduling according to the first information to obtain resource scheduling information, wherein the method comprises the following steps:

and carrying out SL resource scheduling according to the first information and the SL buffer status report to obtain resource scheduling information.

Optionally, the receiving the first information corresponding to the at least one first logical channel group LCG includes:

and receiving first information corresponding to at least one first LCG carried by the RRC signaling or the MAC CE.

The embodiment of the application also provides a data transmission device, which is a first terminal and comprises a memory, a transceiver and a processor:

The system comprises a memory for storing a computer program, a transceiver for receiving and transmitting data under the control of the processor, and a processor for reading the computer program in the memory and performing the following operations:

Transmitting, by the transceiver, first information corresponding to at least one first logical channel group LCG to a network device;

Optionally, the operations further include:

receiving, by the transceiver, resource scheduling information sent by the network device;

Optionally, the operations further include:

Under the condition that first data corresponding to a target LCG exist to be transmitted, according to the first information, sending an SL buffer status report corresponding to the first data to the network equipment through the transceiver;

The embodiment of the application also provides a data transmission device, which is a network device and comprises a memory, a transceiver and a processor:

receiving, by the transceiver, first information corresponding to at least one first logical channel group LCG;

the first information includes priority and/or QoS information.

Optionally, the operations further include:

And transmitting the resource scheduling information to the first terminal through the transceiver.

Optionally, the operations further include:

receiving, by the transceiver, an SL cache status report corresponding to first data sent by the terminal, where the first data is data corresponding to a target LCG, and the target LCG is a first LCG included in the SL cache status report;

The embodiment of the application also provides a data transmission device, which is applied to the first terminal and comprises:

a first sending unit, configured to send first information corresponding to at least one first logical channel group LCG to a network device;

Optionally, the method further comprises:

A first receiving unit, configured to receive resource scheduling information sent by the network device;

And the first transmission unit is used for carrying out data transmission according to the resource scheduling information.

Optionally, the method further comprises:

The second sending unit is used for sending a SL buffer status report corresponding to first data to the network equipment according to the first information when the first data corresponding to a target LCG exists to be transmitted;

The embodiment of the application also provides a data transmission device, which is applied to the network equipment and comprises:

The second receiving unit is used for receiving first information corresponding to at least one first logic channel group LCG;

the first information includes priority and/or QoS information.

Optionally, the method further comprises:

the first processing unit is used for carrying out SL resource scheduling according to the first information to obtain resource scheduling information;

and the third sending unit is used for sending the resource scheduling information to the first terminal.

Optionally, the method further comprises:

the system comprises a terminal, a third receiving unit, a first receiving unit and a second receiving unit, wherein the terminal is used for receiving a SL buffer status report corresponding to first data sent by the terminal, the first data is data corresponding to a target LCG, and the target LCG is a first LCG contained in the SL buffer status report;

The embodiment of the application also provides a non-transitory readable storage medium storing a computer program for causing a processor to execute the method of the first terminal side or the network device side.

The technical scheme of the application has the following beneficial effects:

In the scheme, the data transmission method sends first information corresponding to at least one first logic channel group LCG to the network equipment, wherein the first LCG is LCG of a non-network configured through link SL, the SL is associated with a destination layer 2 identifier or a destination layer 2 index, the first information comprises priority and/or quality of service QoS information, the network equipment can be supported to accurately acquire the first information so as to accurately allocate resources based on the first information later, sidelink resource scheduling of the non-network configured logic channel is achieved, and the problem that Sidelink resource scheduling cannot be accurately supported in the prior art is well solved.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system architecture according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a direct communication architecture according to an embodiment of the present application;

fig. 3 is a schematic diagram of a terminal-to-network relay scheme according to an embodiment of the present application;

fig. 4 is a schematic diagram of a terminal-to-terminal relay scheme according to an embodiment of the present application;

fig. 5 is a schematic flow chart of a data transmission method according to an embodiment of the application;

fig. 6 is a second schematic flow chart of a data transmission method according to an embodiment of the application;

Fig. 7 is a schematic flow chart of a specific implementation of a data transmission method according to an embodiment of the present application;

fig. 8 is a diagram illustrating a SL configuration information format according to an embodiment of the present application;

fig. 9 is a second diagram of a SL configuration information format according to an embodiment of the present application;

Fig. 10 is a schematic diagram of a data transmission device according to an embodiment of the present application;

fig. 11 is a schematic diagram of a data transmission device according to a second embodiment of the present application;

Fig. 12 is a schematic diagram of a data transmission device according to an embodiment of the application;

Fig. 13 is a schematic diagram of a data transmission device according to an embodiment of the application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the embodiment of the application, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, A and/or B, and can mean that A exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in embodiments of the present application means two or more, and other adjectives are similar.

The technical scheme provided by the embodiment of the application can be applied to various systems, especially a 5G system. For example, applicable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (GENERAL PACKET Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR) systems, and the like. Terminal devices and network devices are included in these various systems. Core network parts may also be included in the system, such as Evolved packet system (Evolved PACKET SYSTEM, EPS), 5G system (5 GS), etc.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. A wireless communication system includes a terminal device (also referred to as a terminal) and a network device.

The terminal device according to the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as Personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal DIGITAL ASSISTANT, PDA) and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (ACCESS TERMINAL), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be configured to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an internet protocol (Internet Protocol, IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (the next Generation Node B, gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiment of the present application. In some network structures, the network devices may include centralized unit (centralized unit, CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may be made between the network device and the terminal device, each using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

The following first describes what the scheme provided by the embodiment of the present application relates to.

(1) Direct communication;

direct communication refers to the manner in which nearby terminals may communicate data over a direct communication link (also known as a pass-through link, sidelink) within a close range. The wireless interface corresponding to Sidelink link is called direct communication interface, also called Sidelink interface or PC5 interface. The direct communication architecture may be as shown in fig. 2, and Sidelink discovery and/or communication may be performed using the architecture shown in fig. 2.

(2)UE Relay;

Based on SL discovery and communication technology, the UE can perform data transmission with the network or other UEs in a Relay mode. SL relay is largely divided into two types, UE-to-Network (U2N) relay and terminal-to-UE (U2U) relay:

1)UE-to-Network Relay;

The manner in which a UE communicates with a Network through a Relay UE is referred to as a UE-to-Network Relay, as shown in fig. 3. In order to communicate with the network, UE2 outside the network coverage uses UE1 as a Relay node and forwards its own uplink and downlink signals via UE 1. Wherein, communication between UE1 and UE2 is realized through SL communication, and communication between UE1 and network is realized through cellular communication.

2)UE-to-UE Relay;

The manner in which the UE discovers and/or communicates with the target UE through the Relay UE is called UE-to-UE Relay, as shown in fig. 4, in which, in order to communicate with UE3 that is not in its direct communication range, UE2 may forward its own information through UE1, where data transmission is implemented through SL communication between UE1 and UE2 and between UE1 and UE 3.

Based on the above, the embodiment of the application provides a data transmission method, a device and equipment, which are used for solving the problem that the prior art cannot support accurate realization of Sidelink resource scheduling. The method, the device and the equipment are based on the same application conception, and because the principle of solving the problems by the method, the device and the equipment is similar, the implementation of the method, the device and the equipment can be mutually referred, and the repeated parts are not repeated.

The data transmission method provided by the embodiment of the application is applied to the first terminal, as shown in fig. 5, and comprises the following steps:

step 51, first information corresponding to at least one first logical channel group LCG is sent to the network device, wherein the first LCG is an LCG of a non-network configured through link SL, the SL is associated with a destination layer 2 identifier or a destination layer 2 index, and the first information includes priority and/or quality of service QoS information.

The first information may be understood as priority related information, but is not limited thereto.

The data transmission method provided by the embodiment of the application comprises the steps of sending first information corresponding to at least one first logic channel group LCG to network equipment, wherein the first LCG is LCG of a non-network configured direct link SL, the SL is associated with a destination layer 2 identifier or a destination layer 2 index, the first information comprises priority and/or quality of service QoS information, the network equipment can be supported to accurately acquire the first information so as to accurately allocate resources based on the first information, sidelink resource scheduling of a non-network configured logic channel is realized, and the problem that Sidelink resource scheduling cannot be accurately supported in the prior art is well solved.

The first terminal is a source terminal, a relay terminal or a target terminal in a terminal-to-terminal relay link.

This may support Sidelink resource scheduling for non-network configured logical channels for a variety of terminals.

Further, the data transmission method further comprises the steps of receiving resource scheduling information sent by the network equipment, and carrying out data transmission according to the resource scheduling information.

This may support the first terminal to transmit data based on Sidelink resource scheduling for logical channels that are not network configured.

The data transmission method further comprises the steps of sending a SL buffer status report corresponding to first data to the network equipment according to the first information when the first data corresponding to a target LCG exist to be transmitted, wherein the target LCG is the first LCG to which the first data belongs, receiving resource scheduling information sent by the network equipment, including receiving the resource scheduling information sent by the network equipment according to the first information and the SL buffer status report, and transmitting data according to the resource scheduling information, including transmitting the first data according to the resource scheduling information.

This allows for accurate data transmission based on Sidelink resource scheduling for non-network configured logical channels. The target index in the SL buffer status report is set to a destination layer 2 identifier or a destination layer 2 index corresponding to the receiving terminal of the first data, and the LCG identifier in the SL buffer status report is set to an LCG identifier corresponding to the target LCG, but not limited to this.

The direct link SL of the non-network configuration comprises the SL of the first terminal configuration or the SL of the other terminals configured for the first terminal.

This makes it possible to define a pass-through link SL that is not network configured.

In the embodiment of the application, the sending of the first information corresponding to the at least one first logical channel group LCG to the network equipment comprises sending the first information corresponding to the at least one first logical channel group LCG to the network equipment through a Radio Resource Control (RRC) signaling or a Media Access Control (MAC) CE.

This allows accurate transmission of the first information.

The embodiment of the application also provides a data transmission method, which is applied to the network equipment, as shown in fig. 6, and comprises the following steps:

Step 61, receiving first information corresponding to at least one first logic channel group LCG, wherein the first LCG is an LCG of a through link SL of a non-network configuration, the SL is associated with a destination layer 2 identifier or a destination layer 2 index, and the first information includes priority and/or QoS information.

The data transmission method provided by the embodiment of the application receives the first information corresponding to at least one first logic channel group LCG, wherein the first LCG is the LCG of a non-network configured through link SL, the SL is associated with a destination layer 2 identifier or a destination layer 2 index, the first information comprises priority and/or QoS information, the first information can be accurately obtained by network equipment, so that resource allocation can be accurately carried out based on the first information later, sidelink resource scheduling of the non-network configured logic channel is realized, and the problem that Sidelink resource scheduling cannot be supported accurately in the prior art is well solved.

Further, the data transmission method further comprises the steps of carrying out SL resource scheduling according to the first information to obtain resource scheduling information, and sending the resource scheduling information to the first terminal.

In the embodiment of the application, SL resource scheduling is carried out according to the first information to obtain resource scheduling information, wherein the method comprises the steps of carrying out SL resource scheduling according to the priority in the first information to obtain resource scheduling information, or determining the priority according to QoS information in the first information, and carrying out SL resource scheduling according to the priority to obtain resource scheduling information.

This way the resource scheduling information can be obtained in multiple ways.

Further, the data transmission method further comprises the steps of receiving a SL buffer status report corresponding to first data sent by the terminal, wherein the first data is data corresponding to a target LCG, the target LCG is the first LCG contained in the SL buffer status report, and carrying out SL resource scheduling according to the first information to obtain resource scheduling information, and carrying out SL resource scheduling according to the first information and the SL buffer status report to obtain resource scheduling information.

Thus, the resource scheduling information can be accurately obtained.

In the embodiment of the application, the receiving of the first information corresponding to the at least one first logical channel group LCG comprises receiving the first information corresponding to the at least one first LCG carried by RRC signaling or MAC CE.

This allows accurate transmission of the first information.

The following illustrates the data transmission method provided by the embodiment of the present application, where the network device takes the base station as an example.

Aiming at the technical problems, the embodiment of the application provides a data transmission method, in particular to a U2U relay data transmission method for network scheduling, which can realize Sidelink resource scheduling of a base station to a logical channel configured by a non-base station through information interaction between UE and the base station. The scheme mainly relates to that a UE (corresponding to the first terminal) sends a priority and/or quality of service (Quality of Service, qoS) profile (file; corresponding to the QoS information) corresponding to a logic channel group of a non-network configured SL link (the link is based on a destination L (layer) 2ID (identification) or L2 index)) to a base station (corresponding to the transmission of at least one first logic channel group LCG to network equipment) through Uu signaling, wherein the first LCG is the LCG of a non-network configured direct link SL, the SL is associated with a destination layer 2 identification or a destination layer 2 index, and the first information comprises priority and/or quality of service QoS information. When the UE has a logic channel SL data transmission of a corresponding destination address, the UE generates SL-BSR to request SL resources (corresponding to the condition that the first data corresponding to the target LCG exists to be transmitted according to the first information) from a base station by using the parameters (namely the priority and/or QoSprofile (file)) reported before, sends a SL buffer status report corresponding to the first data to the network equipment according to the first information, receives resource scheduling information sent by the network equipment according to the first information and the SL buffer status report, and sends the SL buffer status report by using the SL resources scheduled by the base station (corresponding to the transmission of the first data according to the resource scheduling information).

The information sent by the UE to the base station may be understood as mainly notifying the base station of configuration information of a link in communication between the UE and the target UE (for example, priority or QoS file corresponding to LCG ID, L2 ID or L2 index (used to identify the target link (SL link not configured by the network)), but not limited to this, specifically:

1. The configuration of the SL link of the non-network configuration includes the configuration generated by the UE itself or the SL configuration configured by other UEs (the through link SL corresponding to the above-described non-network configuration includes the SL configured by the first terminal or the SL configured by other terminals for the first terminal). Such as the configuration in which a relay UE in the U2U relay transmits to a source or target remote UE.

2. The UE may use radio resource Control (Radio Resource Control, RRC) signaling (for example, sidelinkUEInformation NR (direct communication link terminal information new air interface) message or UEAssistanceInformation (terminal auxiliary information) message) to carry UE configuration information, or may report the configuration information through a medium access Control Element (MAC (Medium Access Control) Control Element, MAC CE), and send first information corresponding to at least one first logical channel group LCG to the network device corresponding to the foregoing RRC signaling or MAC CE.

The present embodiment is specifically exemplified below.

Example one is that the source remote UE of U2U relay uses mode 1 resources;

As shown in fig. 7, the present example includes the steps of:

Step 1,1a, source remote UE needs to communicate SL with target remote UE, source remote UE initiates SL discovery procedure, where the target remote UE information is carried and support U2Urelay (to indicate that operations for the discovery can support transit). The Relay UE forwards the SL discovery message of the source remote UE. And the target remote UE replies after receiving the SL discovery message of the source remote UE.

2,2A, selecting a relay UE based on the discovery information interaction process of the 1,1a by the source remote UE or the target remote UE, and respectively establishing SL unicast connection with the selected relay UE.

And 3, respectively establishing End-to-End (E2E) U2U relay connection between the source remote UE and the target remote UE through SL unicast connection with the relay UE.

And 4, the source remote UE sends the end-to-end service related information (such as E2E QoS) to the relay UE through the SL unicast connection with the relay UE.

Step 5 the relay UE splits the end-to-end QoS into 2 hop transmissions (i.e., E2E QoS split). Wherein split represents split.

Step 6, the relay UE sends QoS profile and/or configuration information (corresponding to SL configuration in the figure) of each hop to the source remote UE and the target remote UE.

Step 7, if the QoS profile of the split is carried in step 6, the source remote UE may generate end-to-end SLRB (SL radio bearer) and the (radio link control Radio Link Control, RLC) channel configuration between itself and the relay UE for carrying E2E SLRB. The source remote UE is a network-connected UE, and the source remote UE sends SL configuration information to the base station gNB, where the SL configuration information may include the following information:

l2 ID (or L2 index) of the relay UE;

LCG (logical channel group) ID1 (the identity corresponds to logical channel identity LCID1 and/or 2 (SCCH (SL control channel) bearing end-to-end SL SRB (signaling bearing))), priority 1;

Home LCID 2 (the identity corresponds to LCID3 (STCH (SL traffic channel) bearing end-to-end SL DRB (data bearer))), priority 2;

home LCG ID3 (the identity corresponds to LCID4 (STCH bearer end-to-end SL DRB)), priority 3.

Step 8, assuming that when the source remote UE has LCID3 data to send to the target remote UE, the source remote UE generates a SL-BSR and sends to the base station, wherein Destination Index (target index) is set to L2 index of the relay UE, and LCG ID is set to 2.

And 9, after receiving the SL-BSR, the base station can determine that the priority of the requested service is 2 according to the information reported by the source remote UE in the step 7, and based on the priority, the SL scheduling is performed through downlink control information (Downlink Control Information, DCI).

And 10, after receiving the scheduling of the base station, the source remote UE transmits data (namely, performs SL transmission) by using the scheduled SL resources.

And step 11, the relay UE transmits the data of the source remote UE to the target remote UE.

Example two

The basic procedure is the same as example 1 (specifically, steps 1-6 are the same as example 1), the different steps are steps 7-9 (reporting ID and priority in example one, reporting ID but not priority in example two), specifically, the present example includes the following steps:

Step 7, if the QoS profile of the split is carried in step 6, the source remote UE may generate end-to-end SLRB (SL radio bearer) and a radio link control (Radio Link Control, RLC) channel configuration between the source remote UE and the relay UE for carrying E2E SLRB. The source remote UE is a network-connected UE, and the source remote UE sends SL configuration information to the base station gNB, where the SL configuration information may include the following information:

l2 ID (or L2 index) of the relay UE;

LCG ID1, a logical channel group corresponding to a control channel, no QoS;

LCG ID2, split QoS profile is SL PQI1 (corresponding to the QoS information described above), where SL PQI represents a through link QoS indicator, i.e., an indication ID of QoS, for indicating a parameter configuration of QoS;

LCG ID3, split QoS profile is SL PQI2.

Step 8, assuming that when the source remote UE has LCG ID3 data to send to the target remote UE, the source remote UE generates a SL-BSR and sends to the base station, wherein Destination Index is set to L2 index of the relay UE, and LCG ID is set to 3.

And 9, after receiving the SL-BSR, the base station can obtain SL PQI2 according to the information reported in the step 7 by the source remote UE, determine the priority based on the SL PQI2, and schedule SL resources for the source remote UE through DCI based on the priority.

Thirdly, the UE sends an example of SL configuration information format to the base station through the MAC CE;

the exemplary scheme may specifically be shown in fig. 8, where each priority occupies a 3-bit position, where the number of LCG IDs is used to indicate that one destination Index i contains several LCG IDs. For example, the number of LCG ID in destination Index 1 is 3, which only contains 3 combinations of LCG IDs and priority, and the deficient part can be complemented with R by byte alignment, as shown in fig. 9.

In this description, the UE reports the relationship between the LCG ID and the priority, and of course, the UE may also report the corresponding relationship between the LCG ID and the QoS profile (the base station may determine the priority according to the QoS file) by using the MAC CE, which is similar to reporting the "relationship between the LCG ID and the priority", but replaces the priority with the QoS profile, where the number of bits occupied by each QoS profile is M, which is not described herein.

The scheme provided by the embodiment of the application comprises that the UE sends the priority and/or QoS profile corresponding to the LCG ID of the target ID (corresponding to the SL link (namely the target L2 ID or L2 index)) to the base station, and when data is to be sent, the UE generates a SL-BSR based on the information and sends the SL-BSR to the base station, and the base station schedules the SL resources of the UE based on the received configuration and the SL-BSR.

In summary, the scheme provides a method for scheduling SL resources by a base station based on information reported by UE, and Sidelink resource scheduling of a logical channel configured by the base station to a non-base station can be realized through information interaction between the UE and the base station.

The embodiment of the application also provides a data transmission device, which is a first terminal, as shown in fig. 10, and includes a memory 101, a transceiver 102, and a processor 103:

A memory 101 for storing a computer program, a transceiver 102 for transceiving data under the control of the processor 103, and a processor 103 for reading the computer program in the memory 101 and performing the following operations:

transmitting, by the transceiver 102, first information corresponding to at least one first logical channel group LCG to a network device;

The data transmission equipment provided by the embodiment of the application sends the first information corresponding to at least one first logic channel group LCG to the network equipment, wherein the first LCG is the LCG of the direct link SL of the non-network configuration, the SL is associated with the destination layer 2 identifier or the destination layer 2 index, the first information comprises priority and/or service quality QoS information, the network equipment can be supported to accurately acquire the first information so as to accurately allocate resources based on the first information, sidelink resource scheduling of the logic channel of the non-network configuration is realized, and the problem that Sidelink resource scheduling cannot be accurately supported in the prior art is well solved.

Specifically, the transceiver 102 is configured to receive and transmit data under the control of the processor 103.

Wherein in fig. 10, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 103 and various circuits of memory represented by memory 101, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 102 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc. The user interface 104 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 103 is responsible for managing the bus architecture and general processing, and the memory 101 may store data used by the processor 103 in performing operations.

Alternatively, the processor 103 may be a central processing unit (Central Processing Unit, CPU), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), or complex Programmable logic device (Complex Programmable Logic Device, CPLD), and the processor may also employ a multi-core architecture.

The processor is operable to perform any of the methods provided by embodiments of the present application in accordance with the obtained executable instructions by invoking a computer program stored in a memory. The processor and the memory may also be physically separate.

Further, the operation further comprises the steps of receiving resource scheduling information sent by the network equipment through the transceiver, and carrying out data transmission according to the resource scheduling information.

In the embodiment of the application, the operation further comprises the steps of sending a SL buffer status report corresponding to first data to the network equipment through the transceiver according to the first information when the first data corresponding to the target LCG exists to be transmitted, wherein the target LCG is the first LCG to which the first data belongs, receiving resource scheduling information sent by the network equipment and comprising the step of receiving the resource scheduling information sent by the network equipment according to the first information and the SL buffer status report, and carrying out data transmission according to the resource scheduling information and comprising the step of carrying out transmission of the first data according to the resource scheduling information.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented in the first terminal side method embodiment, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

The embodiment of the present application further provides a data transmission device, where the data transmission device is a network device, as shown in fig. 11, and includes a memory 111, a transceiver 112, and a processor 113:

a memory 111 for storing a computer program, a transceiver 112 for transceiving data under the control of the processor 113, and a processor 113 for reading the computer program in the memory 111 and performing the following operations:

receiving, by the transceiver 112, first information corresponding to at least one first logical channel group LCG;

the first information includes priority and/or QoS information.

The data transmission equipment provided by the embodiment of the application receives the first information corresponding to at least one first logic channel group LCG, wherein the first LCG is the LCG of a non-network configured through link SL, the SL is associated with a destination layer 2 identifier or a destination layer 2 index, the first information comprises priority and/or QoS information, the first information can be accurately obtained by the network equipment, so that the subsequent accurate resource allocation based on the first information can be realized, the Sidelink resource scheduling of the non-network configured logic channel is realized, and the problem that Sidelink resource scheduling cannot be supported accurately in the prior art is well solved.

Specifically, the transceiver 112 is configured to receive and transmit data under the control of the processor 113.

Wherein in fig. 11, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 113 and various circuits of memory represented by memory 111, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 112 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 113 is responsible for managing the bus architecture and general processing, and the memory 111 may store data used by the processor 113 in performing operations.

The processor 113 may be a central processing unit (Central Processing Unit, CPU), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), or complex Programmable logic device (Complex Programmable Logic Device, CPLD), and may also employ a multi-core architecture.

Further, the operation further comprises carrying out SL resource scheduling according to the first information to obtain resource scheduling information, and sending the resource scheduling information to the first terminal through the transceiver.

Further, the method further comprises the steps of receiving, through the transceiver, a SL buffer status report corresponding to first data sent by the terminal, wherein the first data is data corresponding to a target LCG, the target LCG is the first LCG contained in the SL buffer status report, and performing SL resource scheduling according to the first information to obtain resource scheduling information, and performing SL resource scheduling according to the first information and the SL buffer status report to obtain resource scheduling information.

It should be noted that, the above device provided in this embodiment of the present application can implement all the method steps implemented in the method embodiment on the network device side, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

The embodiment of the application also provides a data transmission device, which is applied to the first terminal, as shown in fig. 12, and comprises:

A first sending unit 121, configured to send first information corresponding to at least one first logical channel group LCG to a network device;

The data transmission device provided by the embodiment of the application sends the first information corresponding to at least one first logic channel group LCG to the network equipment, wherein the first LCG is the LCG of the direct link SL of the non-network configuration, the SL is associated with the destination layer 2 identifier or the destination layer 2 index, the first information comprises priority and/or service quality QoS information, the network equipment can be supported to accurately acquire the first information so as to accurately allocate resources based on the first information, sidelink resource scheduling of the logic channel of the non-network configuration is realized, and the problem that Sidelink resource scheduling cannot be accurately supported in the prior art is well solved.

Further, the data transmission device further comprises a first receiving unit for receiving the resource scheduling information sent by the network device, and a first transmission unit for performing data transmission according to the resource scheduling information.

The data transmission device further comprises a second sending unit, a second sending unit and a second sending unit, wherein the second sending unit is used for sending an SL buffer status report corresponding to first data to the network equipment according to the first information when the first data corresponding to a target LCG exist to be transmitted, the target LCG is the first LCG to which the first data belongs, the receiving unit is used for receiving resource scheduling information sent by the network equipment and comprises receiving the resource scheduling information sent by the network equipment according to the first information and the SL buffer status report, and the data transmission is carried out according to the resource scheduling information and comprises the step of transmitting the first data according to the resource scheduling information.

The embodiment of the application also provides a data transmission device, which is applied to network equipment, as shown in fig. 13, and comprises:

a second receiving unit 131, configured to receive first information corresponding to at least one first logical channel group LCG;

the first information includes priority and/or QoS information.

The data transmission device provided by the embodiment of the application receives the first information corresponding to at least one first logic channel group LCG, wherein the first LCG is the LCG of a non-network configured through link SL, the SL is associated with a destination layer 2 identifier or a destination layer 2 index, the first information comprises priority and/or QoS information, the first information can be accurately obtained by network equipment, so that resource allocation can be accurately carried out based on the first information later, sidelink resource scheduling of a non-network configured logic channel is realized, and the problem that Sidelink resource scheduling cannot be supported accurately in the prior art is well solved.

Further, the data transmission device further comprises a first processing unit, a third sending unit and a second sending unit, wherein the first processing unit is used for carrying out SL resource scheduling according to the first information to obtain resource scheduling information, and the third sending unit is used for sending the resource scheduling information to the first terminal.

The data transmission device further comprises a third receiving unit, a third receiving unit and a resource scheduling unit, wherein the third receiving unit is used for receiving SL buffer status reports corresponding to first data sent by the terminal, the first data is data corresponding to target LCG, the target LCG is first LCG contained in the SL buffer status reports, the SL resource scheduling is carried out according to the first information to obtain resource scheduling information, and the resource scheduling information is obtained by carrying out SL resource scheduling according to the first information and the SL buffer status reports.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. The storage medium includes a U disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

The Non-transitory readable storage medium may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memories (e.g., floppy disks, hard disks, magnetic tapes, magneto-Optical disks (MOs), etc.), optical memories (e.g., compact discs, CDs), digital video discs (Digital Video Disc, DVDs), blu-ray discs (BDs), high-definition discs (VERSATILE DISC, HVD), etc.), and semiconductor memories (e.g., ROMs, erasable programmable read-Only memories (EPROM), charged erasable programmable read-Only memories (ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY, EEPROMs), nonvolatile memories (NAND-volatile Memory Device FLASH), solid state disks (Solid STATE DRIVES, SSD)), etc.

The embodiments of the method on the first terminal side or the network device side are applicable to the embodiments of the non-transitory readable storage medium, and the same technical effects can be achieved.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A data transmission method applied to a first terminal, comprising:

2. The data transmission method according to claim 1, wherein the first terminal is a source terminal, a relay terminal or a target terminal in a terminal-to-terminal relay link.

3. The data transmission method according to claim 1, further comprising:

Receiving resource scheduling information sent by the network equipment;

4. A data transmission method according to claim 3, further comprising:

5. The data transmission method according to claim 1, wherein the non-network configured through link SL includes a SL configured by the first terminal or a SL configured by other terminals for the first terminal.

6. The method according to claim 1, wherein the sending, to the network device, first information corresponding to at least one first logical channel group LCG includes:

7. A data transmission method applied to a network device, comprising:

the first information includes priority and/or QoS information.

8. The data transmission method according to claim 7, further comprising:

and sending the resource scheduling information to the first terminal.

9. The data transmission method of claim 8, wherein the first terminal is a source terminal, a relay terminal, or a target terminal in a terminal-to-terminal relay link.

10. The method for data transmission according to claim 8, wherein said performing SL resource scheduling according to the first information to obtain resource scheduling information includes:

11. The data transmission method according to claim 8, further comprising:

12. The data transmission method according to claim 8, wherein the non-network configured through link SL includes a SL configured by the first terminal or a SL configured by other terminals for the first terminal.

13. The method according to claim 7, wherein receiving the first information corresponding to the at least one first logical channel group LCG includes:

14. A data transmission device, the data transmission device being a first terminal, comprising a memory, a transceiver, and a processor:

15. The data transmission device of claim 14, wherein the first terminal is a source terminal, a relay terminal, or a target terminal in a terminal-to-terminal relay link.

16. The data transmission apparatus of claim 14, wherein the operations further comprise:

17. The data transmission apparatus of claim 16, wherein the operations further comprise:

18. The data transmission device of claim 14, wherein the non-network configured pass-through link SL comprises a SL configured for the first terminal or a SL configured for the first terminal by other terminals.

19. The data transmission device according to claim 14, wherein the sending, to the network device, first information corresponding to the at least one first logical channel group LCG includes:

20. A data transmission device, the data transmission device being a network device, comprising a memory, a transceiver, and a processor:

the first information includes priority and/or QoS information.

21. The data transmission apparatus of claim 20, wherein the operations further comprise:

22. The data transmission device of claim 21, wherein the first terminal is a source terminal, a relay terminal, or a target terminal in a terminal-to-terminal relay link.

23. The data transmission device of claim 21, wherein the performing SL resource scheduling according to the first information to obtain resource scheduling information includes:

24. The data transmission apparatus of claim 21, wherein the operations further comprise:

25. The data transmission device of claim 21, wherein the non-network configured pass-through link SL comprises a SL configured for the first terminal or a SL configured for the first terminal by other terminals.

26. The data transmission device of claim 20, wherein the receiving the first information corresponding to the at least one first logical channel group LCG includes:

27. A data transmission apparatus applied to a first terminal, comprising:

28. A data transmission apparatus for use in a network device, comprising:

the first information includes priority and/or QoS information.

29. A non-transitory readable storage medium storing a computer program for causing a processor to perform the method of any one of claims 1 to 13.