CN110972265B

CN110972265B - Resource determination method and device

Info

Publication number: CN110972265B
Application number: CN201811138628.2A
Authority: CN
Inventors: 王婷; 唐浩; 李新县; 唐臻飞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2022-01-14
Anticipated expiration: 2038-09-28
Also published as: CN110972265A; WO2020063130A1

Abstract

The application provides a resource determination method and device. The method comprises the following steps: the terminal receives configuration information, and the configuration information configures candidate sidelink resources; the terminal determines a target sidelink resource from the candidate sidelink resources according to the characteristic information of the activated bandwidth part BWP. Based on this scheme, the terminal may determine a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP. The target sidelink resource can be used as an activated sidelink resource for communication between terminals.

Description

Resource determination method and device

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a resource determination method and apparatus.

Background

Currently, in an application of terminal-to-terminal communication, a sidelink (sidelink) resource is introduced, that is, a terminal-to-terminal communication can be performed through the sidelink resource.

The network side may pre-configure a plurality of sidelink resources and configure the sidelink resources to the terminal, and the terminal may select one or more sidelink resources from the configured sidelink resources to perform transmission of information such as sidelink data.

However, no corresponding solution is provided for how to select the appropriate sidelink resource.

Disclosure of Invention

The application provides a resource determination method and device, which are used for selecting proper sidelink resources for a terminal.

In a first aspect, the present application provides a resource determining method, including: the terminal receives configuration information, and the configuration information configures candidate sidelink resources; the terminal determines a target sidelink resource from the candidate sidelink resources according to the characteristic information of the activated bandwidth part BWP. Based on this scheme, the terminal may determine a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP. The target sidelink resource can be used as an activated sidelink resource for communication between terminals. The terminal can determine the target side link resource through the activated BWP characteristic information, and the network side does not need to inform the terminal of the target side link resource through a special signaling, so the signaling overhead in the determination process of the side link resource can be reduced.

In one possible implementation, the characteristic information of the target sidelink resource is the same as that of the activated BWP, and the characteristic information includes at least one of subcarrier spacing, cyclic prefix CP, waveform, or frequency domain resource information.

In yet another possible implementation, the characteristic information includes frequency domain resource information, and the frequency domain resource information of the target sidelink resource is different from the frequency domain resource information of the activated BWP.

In yet another possible implementation manner, the terminal determines a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP and the synchronization source of the terminal, where the target sidelink resource corresponds to the synchronization source. Optionally, the terminal is configured with a corresponding relationship, and the corresponding relationship indicates that the target sidelink resource corresponds to the synchronization source.

In yet another possible implementation manner, the terminal determines a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP and the area identifier of the terminal, where the target sidelink resource corresponds to the area identifier. Optionally, the terminal is configured with a corresponding relationship, and the corresponding relationship indicates that the target sidelink resource corresponds to the area identifier.

In a possible implementation manner, the activated BWP in any of the above embodiments is an activated uplink BWP, an activated downlink BWP, an initially accessed uplink BWP, an initially accessed downlink BWP, a default uplink BWP, or a default downlink BWP.

In a second aspect, the present application provides a resource determining method, including: the access network equipment sends configuration information to the terminal, and the configuration information configures candidate side link resources; the access network equipment determines the target sidelink resources from the candidate sidelink resources according to the characteristic information of the activated bandwidth part BWP. Based on the scheme, the access network device may determine a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP. The target sidelink resource can be used as an activated sidelink resource for communication between terminals.

In yet another possible implementation manner, the access network device determines a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP and the synchronization source of the terminal, where the target sidelink resource corresponds to the synchronization source. Optionally, the access network device is configured with a corresponding relationship, and the corresponding relationship indicates that the target sidelink resource corresponds to the synchronization source.

In yet another possible implementation manner, the access network device determines a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP and the area identifier of the terminal, where the target sidelink resource corresponds to the area identifier. Optionally, the access network device is configured with a corresponding relationship, and the corresponding relationship indicates that the target sidelink resource corresponds to the area identifier.

In a third aspect, the present application provides a communication apparatus, where the communication apparatus has a function of implementing a terminal or an access network device in the foregoing method embodiment. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the communication device includes: a processor, a memory, a bus, and a communication interface; the memory stores computer-executable instructions, the processor is connected with the memory through the bus, and when the communication device runs, the processor executes the computer-executable instructions stored in the memory, so that the communication device executes the resource determination method in any one of the implementations of the first aspect to the second aspect, or the first aspect to the second aspect. For example, the communication device may be a terminal, an access network device, or the like.

In another possible design, the communication apparatus includes a processor coupled with a memory, the memory being configured to store a program, which when executed by the processor causes the communication apparatus to perform the resource determination method as in any of the implementations of the first aspect to the second aspect, or the first aspect to the second aspect.

In another possible design, the communication apparatus may also be a chip, such as a chip of a terminal or a chip in an access network device, where the chip includes a processing unit and optionally a storage unit, and the chip may be configured to execute the resource determination method in any implementation manner of the first aspect to the second aspect or any implementation manner of the first aspect to the second aspect.

In a fourth aspect, the present application provides a storage medium having stored thereon a computer program or instructions that, when executed, cause a computer to perform a resource determination method as in any of the implementations of the first to second aspects, or the first to second aspects, described above.

In a fifth aspect, the present application provides a computer program product. The computer program product comprises computer software instructions which are loadable by a processor for carrying out the procedures of the resource determination method of any of the above aspects.

In a sixth aspect, the present application provides a system, where the system includes the terminal in the first aspect or any implementation manner of the first aspect, and an access network device in the second aspect or any implementation manner of the second aspect.

Drawings

FIG. 1 is a schematic diagram of a possible network architecture provided herein;

fig. 2 is a schematic flowchart of a resource determination method provided in the present application;

FIG. 3 is a schematic view of an apparatus provided herein;

fig. 4 is a schematic diagram of a terminal provided in the present application;

fig. 5 is a schematic diagram of an access network device according to the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments. In the description of the present application, the term "plurality" means two or more unless otherwise specified.

The architecture and the service scenario described in the present application are for more clearly illustrating the technical solution of the present application, and do not constitute a limitation to the technical solution provided in the present application, and with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the present application is also applicable to similar technical problems.

As shown in fig. 1, which is a schematic diagram of a possible network architecture to which the present application is applied, the terminal 10 communicates with an access network device 20 through a wireless interface, and only one access network device and one terminal are shown for clarity.

The terminal is a device with a wireless transceiving function, and can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal, an Augmented Reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and may further include a User Equipment (UE), and the like. The terminal may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc. A terminal may also be referred to as a terminal device, User Equipment (UE), access terminal device, in-vehicle terminal, industrial control terminal, UE unit, UE station, mobile station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, or UE device, among others. The terminals may also be fixed or mobile. The embodiments of the present application do not limit this.

An access network device, which may also be referred to as a Radio Access Network (RAN) device, is a device that provides a terminal with a wireless communication function. Access network equipment includes, for example but not limited to: next generation base station (gndeb, gNB), evolved node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), home base station (e.g., home evolved node B, or home node B, HNB), Base Band Unit (BBU), transmission point (TRP), Transmission Point (TP), mobile switching center, etc. in 5G. The access network device may also be a wireless controller, a Central Unit (CU), and/or a Distributed Unit (DU) in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, and the like. The terminal may communicate with multiple access network devices of different technologies, for example, the terminal may communicate with an access network device supporting a Long Term Evolution (LTE) network, may communicate with an access network device supporting a 5G network, and may support dual connectivity with the access network device of the LTE network and the access network device of the 5G network. The embodiments of the present application are not limited.

The method is suitable for the scenes of homogeneous networks and heterogeneous networks, and meanwhile, the transmission point is not limited, and the method can be used for multi-point cooperative transmission between a macro base station and a macro base station, between a micro base station and a micro base station, and between the macro base station and the micro base station. The application is suitable for low-frequency scenes (sub 6G) and high-frequency scenes (more than 6G).

The access network equipment and the terminal can perform data transmission through air interface resources. The air interface resources may include time domain resources and frequency domain resources, which may also be referred to as time frequency resources. The frequency domain resources may be located in a frequency range, which may also be referred to as a band (band) or a frequency band, and the width of the frequency domain resources may be referred to as a Bandwidth (BW) of the frequency domain resources.

Some of the communication terms referred to in this application are explained below.

Frame structure parameter (numerology)

numerology includes subcarrier spacing and/or Cyclic Prefix (CP). I.e., different numerology, different subcarrier spacing, or different CP, or both subcarrier spacing and CP.

Illustratively, the subcarrier spacing may include 15kHZ, 30kHZ, 60kHZ, 120kHZ, etc., and the CP includes a Normal (Normal) CP and an Extended (Extended) CP, etc.

Optionally, the frame structure parameter may also be referred to as a parameter for short.

Resource grid

The time-frequency resource may be a resource grid including a time domain and a frequency domain, for example, the unit of the time-domain resource may be a symbol (symbol) and the unit of the frequency-domain resource may be a subcarrier (subcarrier). The smallest resource unit in the resource grid may be referred to as a Resource Element (RE), and one RE is determined by one subcarrier and one symbol. A Resource Block (RB) may include one or more subcarriers, such as 12 subcarriers, in the frequency domain. One slot may include one or more symbols in a time domain, such as 14 symbols (under a normal CP) or 12 symbols (under an extended cyclic prefix) in a New Radio (NR).

In NR, a resource grid may be defined for one frame structure parameter. For example:

the defined resource grid includes

Sub-carriers and

one OFDM symbol. Wherein the content of the first and second substances,

refers to the size of the resource grid, for example, may refer to the number of included RBs, where μ is the subcarrier spacing configuration, and subscript x is downlink or uplink. For example, a resource grid may include X2 RBs, with X2 being a positive integer. X2 RBs may be numbered sequentially for each RB from 0 to X2-1 based on the direction of frequency increase, resulting in a numbered value for each RB. In the embodiments of the present application, the term "number value" may also be referred to as "identification" or "index".

The number of subcarriers included in one resource block is, for example, 12 subcarriers.

The number of symbols included in one subframe is defined as the number of symbols included in the subcarrier spacing configuration μ. Subscript x is either down or up. Further, one subframe may include several slots (slots). In an exemplary manner, the first and second electrodes are,

is referred to as a subcarrierThe number of slots contained in one subframe is configured in the wave interval mu.

Refers to the number of symbols contained in a slot, and may be, for example, 14.

For one numerology and one carrier, a resource grid may be defined in the carrier, wherein a starting position of the resource grid in the carrier is

It can also be described that the starting position of the first subcarrier in the resource grid in the carrier is

The

May be indicated by higher layer signaling.

Data transmission (data transmission between access network equipment and terminal)

When the access network device and the terminal perform data transmission, the access network device may allocate, from the resource grid, frequency domain resources and/or time domain resources of a data CHannel (e.g., a Physical Downlink Shared CHannel (PDSCH) and a Physical Uplink Shared CHannel (PUSCH)) to the terminal through the control information. For example, the control information may indicate symbols and/or RBs to which the data channel is mapped, and the access network device and the terminal perform data transmission on the allocated time-frequency resources through the data channel.

The data transmission may include downlink data transmission and uplink data transmission, where the downlink data transmission (e.g., data carried by the PDSCH) may refer to the access network device sending data to the terminal, and the uplink data transmission (e.g., data carried by the PUSCH) may refer to the terminal sending data to the access network device. The data may be generalized data, such as user data, system information, broadcast information, or other information. Illustratively, the data is data carried on PDSCH.

Fourth, bandwidth part (BWP)

In a wireless communication system, BWP is a contiguous segment of frequency domain resources. The bandwidth part may also be referred to as a carrier bandwidth part (carrier BWP). The configuration of the carrier BWP includes a frequency start RB, a Bandwidth (BW), and a corresponding numerology for the bandwidth portion of the carrier. Wherein, the bandwidth may refer to the number of RBs included in the bandwidth part of the carrier. There is a limit to the maximum number of BWPs that the terminal can be configured, for example, the terminal can be configured with 4 BWPs in one serving cell. There is also a limit to the number of BWPs that the terminal can be activated simultaneously, for example, the number of BWPs that the terminal can be activated simultaneously is one. The terminal performs data transceiving on the activated BWP.

The BWP parameter configuration is introduced as follows: for an upstream BWP or a downstream BWP, the terminal may be configured with one or more of the following parameters:

subcarrier spacing, configured by higher layer parameters (e.g. subanticrierspace).

CP length, configured by higher layer parameters.

-indicating the first RB (starting RB) and the number of consecutive RBs in the BWP by a higher layer parameter (e.g. locationAndBandwidth), and determining the frequency domain position of the BWP in the carrier according to the starting position and the number of RBs.

Identification information, having a corresponding BWP identification for a BWP, indicated by the higher layer parameters BWP-Id.

A set of BWP Common configuration parameters and a set of BWP Dedicated configuration parameters, indicated by high layer parameters BWP-Common and BWP-Dedicated, respectively. The common configuration parameter refers to a parameter used by all BWPs, i.e. the common configuration parameter is the same for all BWPs. The dedicated configuration parameters may refer to parameters for one BWP configuration, and the dedicated configuration parameters of different BWPs may be different or the same, which is not limited in this application. Alternatively, the common configuration parameter may be broadcast through a system message, and each terminal may be the same, while the dedicated configuration parameter may be indicated by RRC signaling, and each terminal may be different.

Optionally, the BWP resource may include a sidelink (sidelink) BWP resource and a Uu air interface (the Uu air interface may be understood as a universal UE to network interface) BWP resource. The sidelinkBWP resource is used for communication between the terminal and the access network device, and the Uu air interface BWP resource is used for communication between the terminal and the access network device. The Uu air interface BWP may also be referred to as Uu BWP.

Five, sidelink (sidelink) transmission

The Sidelink is used for communication between terminals, and may include a Physical Sidelink Shared Channel (psch) and a Physical Sidelink Control Channel (PSCCH). The PSCCH is used for transmitting data, and the PSCCH is used for transmitting control information (such as Scheduling Assignment (SA) information).

Optionally, the sidelink communication may further include a Physical Sidelink Uplink Control Channel (PSUCCH). The physical sidelink uplink control channel may also be referred to simply as a sidelink uplink control channel. The sidelink uplink control channel is used for transmitting at least one of Channel State Information (CSI), hybrid automatic repeat request (HARQ) information, and the like. The HARQ information may include Acknowledgement (ACK) or Negative Acknowledgement (NACK).

The sidelink resources may include sidelink BWP resources, or include a sidelink resources pool, or include a sidelink BWP resource and a sidelink resources pool.

Optionally, for communication between the terminal and the terminal, the terminal may determine a resource pool (resource pool) for sidelink transmission, which specifically includes: a transmission resource pool (transmission resource pool) and a reception resource pool (reception resource pool)).

Optionally, the resource pool may include two parts, one part is a Scheduling Assignment (SA) resource used for transmitting Scheduling information, and the other part is a data (data) resource used for transmitting data. Thus, the transmit resource pool may include scheduling assignment resources and data resources, and the receive resource pool may also include scheduling assignment resources and data resources.

Optionally, there is a correspondence between the sidelink resource and the geographic area and the synchronization source.

Optionally, there is a corresponding relationship between the sidelink resource and the geographic area, and it can also be understood that the sidelink resource corresponds to the area identifier. Illustratively, a geographic area may be divided into a plurality of sub-geographic areas, each sub-geographic area being identified by an area identifier (ZoneID), and a sidelink resource may correspond to one or more area identifiers. The meaning of the region identifier corresponding to the sidelink resource may be understood that the sidelink resource may be used by the terminal located in the region corresponding to the region identifier, or the sidelink resource may be referred to the region identifier, or the sidelink resource may be used by the terminal in the region corresponding to the region identifier. For example, the configuration information of the sidelink resource may include a region identifier, and the corresponding relationship between the region identifier and the sidelink resource may be determined according to the configuration information.

Illustratively, the identification of the region corresponding to sidelink resource 1 is: ZoneID 1. For another example, the identifier of the region corresponding to sidelink resource 2 is: ZoneID 2. For another example, the identifier of the region corresponding to sidelink resource 3 is: ZoneID3 and ZoneID 4.

Optionally, there is a corresponding relationship between the sidelink resource and the synchronization source, which may also be understood as that the sidelink resource corresponds to the synchronization source. The meaning that the synchronization source corresponds to the sidelink resource may be understood as that the terminal may use the sidelink resource when the terminal performs synchronization by using the synchronization source, or may be understood as that the sidelink resource is for the terminal under the synchronization source, or may be understood as that the sidelink resource may be used by the terminal performing synchronization by using the synchronization source. Illustratively, the configuration information of the sidelink resource may include information of a synchronization source, and then the corresponding relationship between the synchronization source and the sidelink resource may be determined according to the configuration information.

Illustratively, there are 3 types of synchronization sources, such as a satellite, a base station, and a terminal, respectively. For each synchronization source, there is a corresponding synchronization mode, for example, if the synchronization source is a satellite, the synchronization mode is satellite synchronization, if the synchronization source is a base station, the synchronization mode is base station synchronization, and if the synchronization source is a terminal, the synchronization mode is terminal synchronization. A sidelink resource may correspond to one or more synchronization sources.

For example, when the synchronization source of the terminal is a satellite, the terminal performs time-frequency synchronization according to a signal transmitted by the satellite.

For another example, when the synchronization source of the terminal is the base station, the terminal performs time-frequency synchronization according to the signal transmitted by the base station.

For another example, when the synchronization source of a terminal is a terminal, the terminal performs time-frequency synchronization according to a signal transmitted by another terminal.

Illustratively, the synchronization source corresponding to sidelink resource 1 is: and (4) a satellite. For another example, the synchronization source corresponding to sidelink resource 2 is: and a base station. For another example, the synchronization source corresponding to sidelink resource 3 is: and (4) a terminal.

Optionally, there is a corresponding relationship between the sidelink resource and the geographic area and the synchronization source, and it can also be understood that the sidelink resource corresponds to the area identifier and the synchronization source.

Illustratively, the identification of the region corresponding to sidelink resource 1 is: ZoneiD1, ZoneiD2, ZoneiD3, the corresponding synchronization sources are: a base station and a terminal. For another example, the identifier of the region corresponding to sidelink resource 2 is: ZoneiD4, ZoneiD5, the corresponding synchronization source is: satellite, base station, terminal. For another example, the identifier of the region corresponding to sidelink resource 3 is: ZoneID6, the corresponding synchronization sources are: and a base station.

At present, an access network device side may configure multiple sidelink resources for a terminal, but how the terminal selects one sidelink resource from the configured multiple sidelink resources for sidelink transmission does not have a corresponding solution.

Based on the system architecture shown in fig. 1, the present application provides a resource determination method. As shown in fig. 2, the resource determining method provided by the present application enables a terminal to select a sidelink resource from a plurality of configured sidelink resources for sidelink transmission.

The method comprises the following steps:

step 201, the access network device sends configuration information to the terminal. Accordingly, the terminal may receive the configuration information.

The configuration information configures candidate sidelink resources.

That is, the access network device configures candidate sidelink resources for the terminal through the configuration information, where the candidate sidelink resources include multiple sidelink resources. The configured sidelink resources may include sidelink BWP resources, and/or a sidelink resource pool.

The candidate sidelink resource configured by the configuration information may be a sidelink resource for transmission, or may be a sidelink resource for reception. That is, the method of the present application may be used to configure sending sidelink resources, and may also be used to configure receiving sidelink resources.

Optionally, for the sending terminal, sending the sidelink resource may refer to a downlink sidelink resource, and receiving the sidelink resource may refer to an uplink sidelink resource.

Optionally, for the receiving terminal, the sending sidelink resource may refer to an uplink sidelink resource, and the receiving sidelink resource may refer to a downlink sidelink resource.

As an implementation manner, the access network device may configure the candidate sidelink resource for the terminal through system information (such as the system information block SIB21) or broadcast information.

As yet another implementation, the access network device may further configure the candidate sidelink resource through Radio Resource Control (RRC) signaling (such as common RRC signaling, dedicated RRC signaling, or the like).

As another implementation, the terminal may be preconfigured with candidate sidelink resources. It is to be understood that pre-configuration in this application may be understood as pre-configured, pre-defined, stored, pre-negotiated, cured, or pre-fired.

In step 202, the terminal determines a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP.

Here, the active BWP refers to an active BWP for Uu port communication, i.e., a BWP for communication between a terminal and an access network device. An active BWP may be understood as a BWP that the terminal is currently operating for communicating with the access network device. On the physical level, "activation" can be achieved, for example, by switching the radio frequency, or adjusting the filter tap coefficients. Such as activating BWP to turn on the rf of the corresponding BWP, or activating BWP to adjust the filter tap coefficients of the corresponding BWP, etc.

In a specific implementation, the activated BWP is an activated uplink BWP, or an activated downlink BWP, or an initially accessed uplink BWP, or an initially accessed downlink BWP, or a default uplink BWP, or a default downlink BWP.

The terminal may receive at least one of a downlink reference signal (including a downlink demodulation reference signal (DMRS)), a Channel state information reference signal (CSI-RS), a Physical Downlink Control Channel (PDCCH), a Physical downlink data Channel (PDSCH), a Physical Sidelink Shared Channel (psch), a Physical Sidelink Control Channel (PSCCH), a Physical Sidelink Discovery Channel (PSCCH), a Physical Sidelink Broadcast Channel (psccast bch), on the activated BWP. The terminal may further transmit at least one of an uplink reference signal (including an uplink DMRS), a Physical Uplink Control Channel (PUCCH), a Physical uplink data Channel (PUSCH), a Physical Sidelink Shared Channel (PSCCH), a Physical Sidelink Control Channel (PSCCH), a Physical Sidelink Discovery Channel (PSCCH), a Physical Sidelink Broadcast Channel (PSDCH), and a Physical Sidelink Broadcast Channel (PSBCH) on the activated bandwidth part.

After determining the target sidelink resource, the terminal may activate the target sidelink resource, or may understand that the terminal performs data transmission on the target sidelink resource. Or, the terminal switches to the target sidelink resource for data transmission.

The terminal may receive at least one of a downlink reference signal (including a downlink DMRS), a CSI-RS, a psch, a PSCCH, a PSDCH, a PSBCH, a PSUCCH on the activated sidelink resource. The terminal can also transmit at least one of an uplink reference signal (including uplink DMRS), PSUCCH, PSSCH, PSCCH, PSDCH, and PSBCH on the sidelink resource.

The characteristic information of the activated BWP may include, for example, at least one of subcarrier spacing, CP, waveform, or frequency domain resource information. Here, the frequency domain resource information is used to indicate a continuous or discrete segment of frequency resources, for example, the frequency resources indicated by the frequency domain resource information may be frequency bands, or frequencies.

Based on the above steps, the terminal may determine a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP. The target sidelink resource can be used as an activated sidelink resource for communication between terminals. The terminal can determine the target side link resource through the activated BWP characteristic information, and the network side does not need to inform the terminal of the target side link resource through a special signaling, so the signaling overhead in the determination process of the side link resource can be reduced.

Optionally, the method may further include the following steps:

in step 203, the access network device determines a target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP.

The method for determining the target side link resource by the access network equipment and the method for determining the target side link resource by the terminal can be the same, so that the target side link resource determined by the access network equipment and the target side link resource determined by the terminal are the same.

After determining the target sidelink resources, the terminal or the access network device may also determine resources for transmission from the target sidelink resources. If the target sidelink resource determined in the above steps is the sending sidelink resource, the sending sidelink resource can be used for the terminal to send information. If the target sidelink resource determined in the above step is a received sidelink resource, the received sidelink resource can be used for the terminal to receive information.

The following describes specific implementation manners of the step 202 with reference to different situations.

The first implementation method is that the feature information of the target sidelink resource is the same as the feature information of the activated BWP, where the feature information includes at least one of subcarrier spacing, CP, waveform, or frequency domain resource information.

Optionally, the feature information of the target sidelink resource is the same as that of the activated BWP, where the feature information is a subcarrier interval. For example, the terminal selects a sidelink resource having the same subcarrier spacing as the activated BWP from the candidate sidelink resources as the target sidelink resource. As an example, the terminal is configured with 4 Uu BWPs, the sub-carrier interval of the Uu BWP1 is 15kHz, the sub-carrier interval of the Uu BWP2 is 30kHz, the sub-carrier interval of the Uu BWP3 is 60kHz, and the sub-carrier interval of the Uu BWP 4 is 120 kHz. The terminal is configured with 4 candidate sidelink resources, the subcarrier interval of the sidelink resource 1 is 15kHz, the subcarrier interval of the sidelink resource 2 is 30kHz, the subcarrier interval of the sidelink resource 3 is 60kHz, and the subcarrier interval of the sidelink resource 4 is 120 kHz. And if the activated BWP of the Uu air interface is Uu BWP1, that is, the subcarrier interval of the Uu air interface is 15kHz, the terminal determines that the sidelink resource 1 is the target sidelink resource. If the active BWP of the Uu air interface is Uu BWP2, that is, the subcarrier interval of the Uu air interface is 30kHz, the terminal determines that the sidelink resource 2 is the target sidelink resource. Based on the mode, the processing complexity of the terminal can be reduced, and the terminal only needs to send or receive signals on resources of one subcarrier interval at one moment.

Optionally, the feature information of the target sidelink resource is the same as the feature information of the activated BWP, where the feature information is a waveform. For example, the terminal selects a sidelink resource having the same waveform as the activated BWP from the candidate sidelink resources as a target sidelink resource. As an example, the terminal configures 4 Uu air interfaces BWP, the waveform of the Uu BWP1 is a single carrier, the waveform of the Uu BWP2 is a single carrier, the waveform of the Uu BWP3 is a multi-carrier, and the waveform of the Uu BWP 4 is a multi-carrier. The terminal is configured with 4 candidate sidelink resources, the waveform of the sidelink resource 1 is a single carrier, the waveform of the sidelink resource 2 is a single carrier, the waveform of the sidelink resource 3 is a multi-carrier, and the waveform of the sidelink resource 4 is a multi-carrier. If the active BWP of the Uu air interface is Uu BWP1, that is, the waveform of the Uu air interface is a single carrier, the terminal determines that sidelink resource 1 and/or sidelink resource 2 is a target sidelink resource. If the active BWP of the Uu air interface is Uu BWP3, that is, the waveform of the Uu air interface is multicarrier, the terminal determines sidelink resource 3 and/or sidelink resource 4 as the target sidelink resource. Based on the mode, the terminal can reduce the processing complexity of the terminal, and the terminal only needs to transmit or receive signals of one waveform at one time.

Optionally, the feature information of the target sidelink resource is the same as the feature information of the activated BWP, where the feature information is frequency domain resource information. For example, the terminal selects a sidelink resource having the same frequency domain resource information as the activated BWP from the candidate sidelink resources as the target sidelink resource. As an example, the terminal is configured with 4 Uu air interfaces BWP, the frequency band of the Uu BWP1 is band1, the frequency band of the Uu BWP2 is band2, the frequency band of the Uu BWP3 is band3, and the frequency band of the Uu BWP 4 is band 4. The terminal is configured with 4 candidate sidelink resources, the frequency band of the sidelink resource 1 is band1, the frequency band of the sidelink resource 2 is band2, the frequency band of the sidelink resource 3 is band3, and the frequency band of the sidelink resource 4 is band 4. If the activated BWP of the Uu air interface is Uu BWP1, that is, the frequency band of the Uu air interface is band1, the terminal determines that the sidelink resource 1 is the target sidelink resource. If the activated BWP of the Uu air interface is Uu BWP2, that is, the frequency band of the Uu air interface is band2, the terminal determines that the sidelink resource 2 is the target sidelink resource. Based on the mode, the terminal can reduce the switching time of the central frequency point of the terminal, and reduce the processing complexity and the processing time delay. Terminals for a single transmission link (TX chain) may reduce complexity.

Optionally, the feature information of the target sidelink resource is the same as the feature information of the activated BWP, where the feature information is CP. For example, the terminal selects a sidelink resource having the same CP as the activated BWP from the candidate sidelink resources as the target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as that of the activated BWP, where the feature information is subcarrier spacing and CP. For example, the terminal selects a sidelink resource having the same subcarrier spacing and CP as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as the feature information of the active BWP, where the feature information is CP and waveform. For example, the terminal selects a sidelink resource having the same CP and waveform as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as that of the activated BWP, where the feature information is subcarrier spacing and waveform. For example, the terminal selects a sidelink resource having the same subcarrier spacing and waveform as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as the feature information of the activated BWP, where the feature information is subcarrier spacing and frequency domain resource information. For example, the terminal selects a sidelink resource having the same subcarrier spacing and frequency domain resource information as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as the feature information of the activated BWP, where the feature information is CP and frequency domain resource information. For example, the terminal selects a sidelink resource having the same CP and frequency domain resource information as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as the feature information of the activated BWP, where the feature information is waveform and frequency domain resource information. For example, the terminal selects a sidelink resource having the same waveform and frequency domain resource information as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as that of the activated BWP, where the feature information is subcarrier, CP and frequency domain resource information. For example, the terminal selects a sidelink resource having the same subcarrier, CP and frequency domain resource information as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as that of the activated BWP, where the feature information is subcarrier, waveform, and frequency domain resource information. For example, the terminal selects a sidelink resource having the same subcarrier, waveform, and frequency domain resource information as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as that of the activated BWP, where the feature information is subcarrier spacing, CP and waveform. For example, the terminal selects a sidelink resource having the same subcarrier spacing, CP, and waveform as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as that of the activated BWP, where the feature information is CP, waveform, and frequency domain resource information. For example, the terminal selects a sidelink resource having the same CP, waveform, and frequency domain resource information as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Optionally, the feature information of the target sidelink resource is the same as that of the activated BWP, where the feature information is subcarrier, CP, waveform, and frequency domain resource information. For example, the terminal selects a sidelink resource having the same subcarrier, CP, waveform, and frequency domain resource information as the activated BWP from the candidate sidelink resources as a target sidelink resource.

Therefore, in the first implementation method, the target sidelink resource determined by the terminal is one or more of candidate sidelink resources, and the determined target sidelink resource has the same characteristic information as the activated BWP, where the characteristic information may be one or more of subcarrier spacing, CP, waveform, or frequency domain resource information.

And in the second implementation method, the frequency domain resource information of the target sidelink resource is different from the frequency domain resource information of the activated BWP.

The terminal selects a sidelink resource having different frequency domain resource information from the activated BWP from the candidate sidelink resources as a target sidelink resource. Take frequency domain resource information as frequency band (band) as an example. As an example, the terminal is configured with 4 Uu air interfaces BWP, the frequency band of the Uu BWP1 is band1, the frequency band of the Uu BWP2 is band2, the frequency band of the Uu BWP3 is band3, and the frequency band of the Uu BWP 4 is band 4. The terminal is configured with 4 candidate sidelink resources, the frequency band of the sidelink resource 1 is band1, the frequency band of the sidelink resource 2 is band2, the frequency band of the sidelink resource 3 is band3, and the frequency band of the sidelink resource 4 is band 4. If the activated BWP of the Uu air interface is Uu BWP1, that is, the frequency band of the Uu air interface is band1, the terminal determines one or more of sidelink resource 2, sidelink resource 3, and sidelink resource 4 as the target sidelink resource. For example, sidelink resource 2 is determined as a target sidelink resource, sidelink resource 3 is determined as a target sidelink resource, sidelink resource 4 is determined as a target sidelink resource, sidelink resources 2 and3 are determined as target sidelink resources, sidelink resource 2 and4 are determined as target sidelink resources, or sidelink resource 3 and4 are determined as target sidelink resources. If the activated BWP of the Uu air interface is Uu BWP2, that is, the frequency band of the Uu air interface is band2, the terminal determines one or more of sidelink resource 1, sidelink resource 3, and sidelink resource 4 as the target sidelink resource. For example, sidelink resource 1 is determined as a target sidelink resource, sidelink resource 3 is determined as a target sidelink resource, sidelink resource 4 is determined as a target sidelink resource, sidelink resources 1 and3 are determined as target sidelink resources, sidelink resource 1 and4 are determined as target sidelink resources, or sidelink resource 3 and4 are determined as target sidelink resources. Based on the method, the frequency band of the target sidelink resource determined by the terminal is different from the BWP of the Uu air interface, the concurrence of uplink and sidelink can be realized, and resource conflict is avoided. The terminal aiming at the multiple transmission link (TX chain) can improve the throughput of data and simultaneously receive or transmit various data.

It should be noted that, for the second implementation method, only the frequency domain resource information of the target sidelink resource is defined to be different from the frequency domain resource information of the active BWP, and as to the relationship between the target sidelink resource and the other characteristic information of the active BWP, in an implementation manner, the definition may not be limited, and in another implementation manner, one or more of the subcarrier interval, CP, and waveform between the target sidelink resource and the active BWP may be defined to be the same, for example, the definition may define the subcarrier interval between the target sidelink resource and the active BWP to be the same, or the definition may define the waveform between the target sidelink resource and the active BWP to be the same, or the definition may define the CP between the target sidelink resource and the active BWP to be the same, or define the definition may define the subcarrier interval and waveform between the target sidelink resource and the active BWP to be the same, and so on.

As an alternative implementation, the step 202 may be replaced by the following implementation method.

And the terminal determines the target sidelink resource from the candidate sidelink resources according to the corresponding relation between the sidelink resource and the Uu BWP.

The corresponding relationship may be configured in advance at the terminal, or configured by the access network device through the physical layer information, or configured by the access network device through the configuration information of step 201.

In one implementation, sidelink resources may correspond one-to-one to Uu BWPs in increasing order of Identification (ID). For example, sidelink resource 1 corresponds to Uu BWP1, sidelink resource 2 corresponds to Uu BWP2, sidelink resource 3 corresponds to Uu BWP3, and so on.

In yet another implementation, multiple sidelink resources correspond to the same Uu BWP. For example, there are N sidelink resources, M Uu BWPs, N is an integer greater than 1, M is a positive integer, and N is greater than or equal to M. The N sidelink resources may be divided into M groups, corresponding to M Uu BWPs, respectively. The N sidelink resources are respectively 0- (N-1), and the corresponding relationship can be established as follows:

first set of sidelink resources:

corresponding to Uu BWP 1;

second set of sidelink resources:

corresponding to Uu BWP 2;

……

set M sidelink resources:

corresponding to Uu BWP M.

Alternatively, the correspondence relationship may also be established as follows:

first set of sidelink resources:

corresponding to Uu BWP 1;

second set of sidelink resources:

corresponding to Uu BWP 2;

……

set M sidelink resources:

corresponding to Uu BWP M.

first set of sidelink resources:

corresponding to Uu BWP 1;

second set of sidelink resources:

corresponding to Uu BWP 2;

……

set M sidelink resources:

corresponding to Uu BWP M.

It should be noted that, in the above formula

Is referred to asThe lower part is taken as the whole,

meaning rounding up. As an implementation, rounding up may also be understood as rounding down +1, and rounding down may also be understood as rounding up-1. It will be appreciated that rounding may not be done if the value to be rounded is itself an integer.

In another implementation, if N is smaller than M, N Uu BWPs may be selected from the M Uu BWPs, and then one sidelink resource corresponds to one Uu BWP. Alternatively, P Uu BWPs may be selected from the M Uu BWPs, where P is a positive integer smaller than N, and then the N sidelink resources may be divided into P groups according to the above method, where the P groups correspond to the P Uu BWPs.

Therefore, after the terminal acquires the corresponding relationship, one or more sidelink resources corresponding to the activated BWP are determined as the target sidelink resources according to the activated BWP and the corresponding relationship.

And the terminal determines the target sidelink resource from the candidate sidelink resources according to the synchronization source of the terminal and the corresponding relation between the sidelink resources and the synchronization source.

The synchronization sources for sidelink may include three types: satellites, base stations and terminals. Or may include other synchronization sources, which are not limited in this application. When the synchronization source is a Satellite, the corresponding synchronization mode is Satellite synchronization, the Satellite synchronization may be Global Navigation Satellite System (GNSS), when the synchronization source is a base station, the corresponding synchronization mode is base station synchronization, the base station synchronization may be gNB synchronization or eNB synchronization, and when the synchronization source is a terminal, the corresponding synchronization mode is terminal synchronization, and the terminal synchronization may be New Radio (NR) terminal synchronization or Long Term Evolution (LTE) terminal synchronization.

The corresponding relationship may be configured in advance at the terminal, or may also be configured by the access network device through the physical layer information, or may also be configured by the access network device through the configuration information of step 201.

In one implementation, the sidelink resource Identifiers (IDs) may be in one-to-one correspondence with the satellites, the base stations, and the terminals, respectively, in an increasing order. For example, sidelink resource 1 corresponds to a satellite, sidelink resource 2 corresponds to a base station, sidelink resource 3 corresponds to a terminal, sidelink resource 4 corresponds to a satellite, sidelink resource 5 corresponds to a base station, sidelink resource 6 corresponds to a terminal, and so on.

In yet another implementation, multiple sidelink resources correspond to the same synchronization source. For example, there are N sidelink resources, M synchronization sources, N is an integer greater than 1, M is a positive integer, and N is greater than or equal to M. The N sidelink resources may be divided into M groups, corresponding to M synchronization sources, respectively. The N sidelink resources are respectively 0- (N-1), and the corresponding relationship can be established as follows:

first set of sidelink resources:

corresponding to the synchronous source 1;

second set of sidelink resources:

corresponding to the synchronization source 2;

……

set M sidelink resources:

corresponding to the synchronization source M.

first set of sidelink resources:

corresponding to the synchronous source 1;

second set of sidelink resources:

corresponding to the synchronization source 2;

……

set M sidelink resources:

corresponding to the synchronization source M.

first set of sidelink resources:

corresponding to the synchronous source 1;

second set of sidelink resources:

corresponding to the synchronization source 2;

……

set M sidelink resources:

corresponding to the synchronization source.

It should be noted that, in the above formula

It is referred to as rounding down,

In another implementation, if N is less than M, N synchronization sources may be selected from M synchronization sources, and then one sidelink resource corresponds to one synchronization source. Or, P synchronization sources may be selected from M synchronization sources, where P is a positive integer smaller than N, and then the N sidelink resources are divided into P groups according to the above method, where the P groups correspond to the P synchronization sources, respectively.

In one implementation, the value of M is 3, that is, three synchronization sources are included, where the synchronization source 1 is a satellite, the synchronization source 2 is a base station, and the synchronization source 3 is a terminal.

Therefore, after the terminal acquires the corresponding relationship, one or more sidelink resources corresponding to the synchronization source of the terminal are determined as target sidelink resources according to the synchronization source of the terminal and the corresponding relationship. For example, sidelink resource 1 corresponds to a satellite, sidelink resource 2 corresponds to a base station, and sidelink resource 3 corresponds to a terminal. If the synchronization source where the terminal is located is a satellite, the terminal determines that the sidelink resource 1 is the target sidelink resource, so that the terminal can transmit or receive the sidelink signal in the sidelink resource 1. If the synchronization source where the terminal is located is the base station, the terminal determines that the sidelink resource 2 is the target sidelink resource, so the terminal can transmit or receive the sidelink signal in the sidelink resource 2. If the synchronization source where the terminal is located is the terminal, the terminal determines that the sidelink resource 3 is the target sidelink resource, so the terminal can transmit or receive the sidelink signal in the sidelink resource 3.

Based on the fourth implementation method, different sidelink resources are configured for different synchronization sources, which is beneficial to avoiding the probability and interference of resource conflict among users of different synchronization sources. Signaling for activation or deactivation of the sidelink resource can be avoided by determining the sidelink resource according to the synchronization source, that is, the sidelink resource is determined in an implicit manner.

And the terminal determines the target sidelink resource from the candidate sidelink resources according to the corresponding relation between the sidelink resources and the Zone identification (Zone ID).

In one implementation, sidelink resources may correspond one-to-one to region identifications in increasing order of Identification (ID). For example, sidelink resource 1 corresponds to region identifier 1, sidelink resource 2 corresponds to region identifier 2, sidelink resource 3 corresponds to region identifier 3, and so on.

In yet another implementation, multiple sidelink resources correspond to the same region identifier. For example, there are N sidelink resources, M zone identifiers, N is an integer greater than 1, M is a positive integer, and N is greater than or equal to M. The N sidelink resources may be divided into M groups, corresponding to M region identifiers, respectively. The N sidelink resources are respectively 0- (N-1), and the corresponding relationship can be established as follows:

first set of sidelink resources:

a corresponding area identifier 1;

second set of sidelink resources:

a corresponding area identifier 2;

……

set M sidelink resources:

the corresponding region identification M.

first set of sidelink resources:

a corresponding area identifier 1;

second set of sidelink resources:

a corresponding area identifier 2;

……

set M sidelink resources:

the corresponding region identification M.

first set of sidelink resources:

A corresponding area identifier 1;

second set of sidelink resources:

a corresponding area identifier 2;

……

set M sidelink resources:

the corresponding region identification M.

It should be noted that, in the above formula

It is referred to as rounding down,

refers to rounding up the symbol. As an implementation, rounding up may also be understood as rounding down +1, and rounding down may also be understood as rounding up-1. It will be appreciated that rounding may not be done if the value to be rounded is itself an integer.

In another implementation, if N is smaller than M, N region identifiers may be selected from the M region identifiers, and then one sidelink resource corresponds to one region identifier. Or, P region identifiers may be selected from M synchronization sources, where P is a positive integer smaller than N, and then the N sidelink resources are divided into P groups according to the above method, where the P groups correspond to the P region identifiers, respectively.

Therefore, after the terminal acquires the corresponding relationship, one or more sidelink resources corresponding to the area identifier of the terminal are determined as the target sidelink resources according to the area identifier of the terminal and the corresponding relationship.

Based on the fifth implementation method, the probability of resource conflict of the terminal can be reduced, and meanwhile, the overhead is reduced. Different sidelink resources are configured for different region identifiers, and the probability and interference of resource conflict among different users with region identifiers can be avoided. The sidelink resource is determined according to the area identifier of the terminal, which is helpful for avoiding signaling of activation or deactivation of the sidelink resource, namely, the sidelink resource is determined in an implicit mode.

The implementation method six is that any two or more implementation methods of the implementation method one, the implementation method two, the implementation method three, the implementation method four and the implementation method five are combined, and any combination mode does not include the implementation method one and the implementation method two at the same time.

For example, when the first implementation method and the third implementation method are combined, the first implementation method may be used to determine one or more sidelink resources from the candidate sidelink resources, if the determined sidelink resource is one, the sidelink resource is the target sidelink resource, and if the determined sidelink resources are multiple, the third implementation method may be used to further determine the target sidelink resource from the determined sidelink resources. Or, first, determining one or more sidelink resources from the candidate sidelink resources by using the third implementation method, where the sidelink resource is the target sidelink resource if the determined sidelink resource is one, and further determining the target sidelink resource from the determined sidelink resources by using the first implementation method if the determined sidelink resources are multiple.

For example, if the implementation method four is combined with the implementation method five, the implementation method four may be first used to determine one or more sidelink resources from the candidate sidelink resources, if the determined sidelink resource is one, the sidelink resource is the target sidelink resource, and if the determined sidelink resources are multiple, the implementation method five may be further used to determine the target sidelink resource from the determined sidelink resources. Or, first, one or more sidelink resources may be determined from the candidate sidelink resources by using the fifth implementation method, where the sidelink resource is the target sidelink resource if the determined sidelink resource is one, and the target sidelink resource is further determined from the determined sidelink resources by using the fourth implementation method if the determined sidelink resources are multiple.

For other implementation processes in which any two or more implementation methods of the first implementation method, the second implementation method, the third implementation method, the fourth implementation method and the fifth implementation method are combined, no description is given one by one.

Through the combination of multiple implementation methods, the method is helpful for determining the target sidelink resource which simultaneously meets multiple requirements, such as the requirement of simultaneously meeting a waveform, the requirement of a subcarrier interval, the requirement of a synchronization source and the like.

It should be noted that, for a specific implementation manner of step 203, reference may be made to the implementation method of the terminal side, and a repeated description is not made. And the method for determining the target sidelink resource by the access network equipment and the method for determining the sidelink resource by the terminal side can be kept consistent.

The Sidelink transmission mode may have two modes, for example, one mode is an assisted scheduling mode, for example, the mode may be an access network equipment assisted scheduling mode or a control terminal assisted scheduling mode; one is a terminal autonomous selection mode. It is understood that the two modes may have other names, and the embodiments of the present application are not limited thereto. In the first mode, the access network device or the control terminal may send downlink control information to the sending terminal, and the sending terminal performs sidelink transmission in a first resource in the target sidelink resources indicated in the downlink control information.

In the second mode, the terminal can sense the target sidelink resources and determine the first resource for sidelink transmission in the target sidelink resources. Sidelink transmission is performed in a first resource of the target sidelink resources.

The above "sensing" may be understood as that the terminal receives a signal on a sidelink resource in the target sidelink resource, and detects the signal energy of the signal. For example, the signal energy may refer to Reference Signal Received Power (RSRP) and/or Received Signal Strength Indicator (RSSI). A sidelink resource is considered to be a sidelink resource (i.e., the first resource described above) that can be used for transmitting sidelink signals if the signal energy on the perceived sidelink resource is less than (or less than or equal to) the perception threshold; a Sidelink resource is considered to be a Sidelink resource that cannot be used for transmission of Sidelink signals if the signal energy on the perceived Sidelink resource is greater than or equal to (or greater than) the perception threshold. The terminal can determine the first resource of sidelink transmission in the target sidelink resource by sensing the target sidelink resource.

As an implementation manner, based on sidelink transmission in the first mode, after the terminal and the access network device determine the target sidelink resource, the following may be further performed: the access network equipment or the control finger terminal sends downlink control information to a sending terminal, wherein the downlink control information is used for indicating a first resource which can be used for performing sidelink transmission in target sidelink resources of the sending terminal, and the sending terminal is a sender of sidelink data. And the transmitting terminal receives the downlink control information. And the sending terminal performs sidelink transmission in the first resource.

Further, for sidelink transmission, the sending terminal may also send sidelink control information to the receiving terminal.

As another implementation manner, after determining the target sidelink resource, the terminal may further perform: and the sending terminal sends sidelink control information, wherein the sidelink control information is used for indicating a first resource which can be used for performing sidelink transmission in target sidelink resources, and the sending terminal is a sender of sidelink data. And the transmitting terminal transmits sidelink data in the first resource. And the receiving terminal receives the sidelink control information, wherein the receiving terminal is a receiver of the sidelink data. And the receiving terminal receives sidelink data in the first resource.

In the case of using an integrated unit, fig. 3 shows a possible exemplary block diagram of the apparatus according to the embodiment of the present invention, where the apparatus 300 may exist in the form of software, hardware, software and hardware, and the embodiment of the present application is not limited thereto. The apparatus 300 may comprise: a processing unit 302 and a communication unit 303. As an implementation, the communication unit 303 may include a receiving unit and/or a transmitting unit. The processing unit 302 is used for controlling and managing the device 300. The communication unit 303 is used to support communication of the apparatus 300 with other network entities. The apparatus 300 may further comprise a storage unit 301 for storing program codes and data of the apparatus 300.

The processing unit 302 may be a processor or a controller, and may be, for example, a general-purpose Central Processing Unit (CPU), a general-purpose processor, a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the embodiment disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 303 may be a communication interface, a transceiver or a transceiver circuit, etc., wherein the communication interface is referred to as a generic term, and in a specific implementation, the communication interface may include a plurality of interfaces. The storage unit 301 may be a memory.

In the first application, the apparatus 300 may be an access network device in any of the above embodiments, and may also be a chip in the access network device. For example, when the apparatus 300 is an access network device, the processing unit 302 may be, for example, a processor, the communication unit may be, for example, a transceiver including radio frequency circuitry, and optionally the storage unit may be, for example, a memory. For example, when the apparatus 300 is a chip in an access network device, the processing unit 302 may be a processor, for example, and the communication unit may be an input/output interface, a pin, a circuit, or the like, for example. The processing unit 302 may execute a computer execution instruction stored in a storage unit, optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the access network device, such as a read-only memory (ROM) or another type of static storage device that may store static information and instructions, a Random Access Memory (RAM), and the like.

Specifically, when the communication unit 303 includes a transmitting unit and a receiving unit: a sending unit, configured to send configuration information to a terminal, where the configuration information configures candidate sidelink resources; a processing unit 302, configured to determine a target sidelink resource from the candidate sidelink resources according to the feature information of the activated bandwidth portion BWP.

In yet another possible implementation manner, the characteristic information includes frequency domain resource information, and the frequency domain resource information of the target sidelink resource is different from the frequency domain resource information of the activated BWP.

In yet another possible implementation manner, the processing unit 302 is specifically configured to determine the target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP and the synchronization source of the terminal, where the target sidelink resource corresponds to the synchronization source. Optionally, the terminal is configured with a corresponding relationship, where the corresponding relationship indicates that the target sidelink resource corresponds to the synchronization source.

In yet another possible implementation manner, the processing unit 302 is specifically configured to determine the target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP and the area identifier of the terminal, where the target sidelink resource corresponds to the area identifier. Optionally, the terminal is configured with a corresponding relationship, where the corresponding relationship indicates that the target sidelink resource corresponds to the area identifier.

In any of the above embodiments, the active BWP is an active upstream BWP, an active downstream BWP, an initially accessed upstream BWP, an initially accessed downstream BWP, a default upstream BWP, or a default downstream BWP.

In a second application, the apparatus 300 may be a terminal in any of the above embodiments, and may also be a chip in the terminal. For example, when the apparatus 300 may be a terminal, the processing unit 302 may be, for example, a processor, the communication unit may be, for example, a transceiver including a radio frequency circuit, and optionally the storage unit may be, for example, a memory. For example, when the apparatus 300 may be a chip in a terminal, the processing unit 302 may be, for example, a processor, and the communication unit may be, for example, an input/output interface, a pin, a circuit, or the like. Alternatively, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the terminal, such as a ROM or other types of static storage devices that can store static information and instructions, a RAM, and the like.

Specifically, when the communication unit 303 includes a transmitting unit and a receiving unit: a receiving unit, configured to receive configuration information, where the configuration information configures candidate sidelink resources; a processing unit 302, configured to determine a target sidelink resource from the candidate sidelink resources according to the feature information of the activated bandwidth portion BWP.

In one possible implementation, the characteristic information of the target sidelink resource is the same as the characteristic information of the activated BWP, and the characteristic information includes at least one of subcarrier spacing, CP, waveform, or frequency domain resource information.

When the apparatus shown in fig. 3 is a terminal or an access network device, reference may be made to the related description in the foregoing method embodiment for specific beneficial effects of the resource determination method that is used for execution, and details are not described here again.

Fig. 4 shows a simplified schematic diagram of a possible design structure of a terminal according to an embodiment of the present invention. The terminal 400 comprises a transmitter 401, a receiver 402 and a processor 403. The processor 403 may also be a controller, and is denoted as "controller/processor 403" in fig. 4. Optionally, the terminal 400 may further include a modem processor 405, where the modem processor 405 may include an encoder 406, a modulator 407, a decoder 408, and a demodulator 409.

In one example, the transmitter 401 conditions (e.g., converts to analog, filters, amplifies, and frequency upconverts, etc.) the output samples and generates an uplink signal, which is transmitted via an antenna to the access network equipment described in the embodiments above. On the downlink, the antenna receives the downlink signal transmitted by the access network device in the above embodiment. Receiver 402 conditions (e.g., filters, amplifies, downconverts, and digitizes, etc.) the received signal from the antenna and provides input samples. In modem processor 405, an encoder 406 receives traffic data and signaling messages to be sent on the uplink and processes (e.g., formats, encodes, and interleaves) the traffic data and signaling messages. A modulator 407 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. A demodulator 409 processes (e.g., demodulates) the input samples and provides symbol estimates. A decoder 408 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages for transmission to the terminal 400. The encoder 406, modulator 407, demodulator 409 and decoder 408 may be implemented by a combined modem processor 405. These elements are processed according to the radio access technology employed by the radio access network. It should be noted that, when the terminal 400 does not include the modem processor 405, the above-mentioned functions of the modem processor 405 can also be performed by the processor 403.

The processor 403 performs control management on the terminal 400, and is configured to execute the processing procedure performed by the terminal in the embodiment of the present invention. For example, the processor 403 is configured to execute a processing procedure related to the terminal in the resource determination method according to any embodiment of the present application and/or other procedures of the technical solutions described in the present application.

Further, the terminal 400 may also include a memory 404, the memory 404 for storing program codes and data for the terminal 400.

Fig. 5 is a schematic diagram illustrating a possible structure of an access network device according to an embodiment of the present invention. The access network apparatus 500 includes a processor 502 and a communication interface 504. The processor 502 may also be a controller, and is shown as "controller/processor 502" in fig. 5. The communication interface 504 is used to support the access network device to communicate with the terminal. Further, the access network apparatus 500 may further include a transmitter/receiver 501. The transmitter/receiver 501 is used to support radio communication between the access network device and the terminal in the above embodiments. The processor 502 may perform various functions for communicating with the terminal. In the uplink, an uplink signal from the terminal is received via an antenna, demodulated by the receiver 501 (e.g., high frequency signals are demodulated to baseband signals), and further processed by the processor 502 to recover traffic data and signaling information sent by the terminal. On the downlink, traffic data and signaling messages are processed by processor 502 and modulated (e.g., by modulating a baseband signal to a high frequency signal) by transmitter 501 to generate a downlink signal, which is transmitted via the antenna to the terminals. It should be noted that the above demodulation or modulation functions may also be performed by the processor 502.

For example, the processor 502 is further configured to execute a processing procedure related to the access network device in any resource determination method in the embodiment of the present application and/or other procedures of the technical solutions described in the present application.

Further, the access network apparatus 500 may further include a memory 503, the memory 503 being used to store program codes and data of the access network apparatus 500.

It will be appreciated that fig. 5 shows only a simplified design of the access network device 500. In practical applications, the access network device 500 may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all access network devices that may implement the embodiments of the present invention are within the scope of the embodiments of the present invention.

Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. mentioned in this application are only used for the convenience of description and are not used to limit the scope of the embodiments of this application, but also to indicate the sequence. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one" means one or more. At least two means two or more. "at least one," "any," or similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one (one ) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more available media integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The various illustrative logical units and circuits described in this application may be implemented or operated upon by design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in the embodiments herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be disposed in a terminal. In the alternative, the processor and the storage medium may reside in different components within the terminal.

These computer program 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.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include such modifications and variations.

Claims

1. A method for resource determination, comprising:

a terminal receives configuration information, and the configuration information configures candidate sidelink resources;

and the terminal determines a target sidelink resource from the candidate sidelink resources according to the characteristic information of the activated bandwidth part BWP.

2. The method of claim 1, wherein the characteristic information of the target sidelink resource is the same as the characteristic information of the activated BWP, the characteristic information including one or more of subcarrier spacing, cyclic prefix CP, waveform, or frequency domain resource information.

3. The method of claim 1, wherein the characteristic information includes frequency domain resource information, the frequency domain resource information of the target sidelink resource being different from the frequency domain resource information of the activated BWP.

4. Method according to any of claims 1 to 3, wherein said terminal determines said target sidelink resource from said candidate sidelink resources according to the feature information of the activated BWP and the synchronization source of said terminal, said target sidelink resource corresponding to said synchronization source.

5. The method of claim 4, wherein the terminal is configured with a correspondence indicating that the target sidelink resource corresponds to the synchronization source.

6. Method according to any of claims 1 to 3, wherein said terminal determines said target sidelink resource from said candidate sidelink resources according to the feature information of the activated BWP and the zone identity of said terminal, said target sidelink resource corresponding to said zone identity.

7. The method of claim 6, wherein the terminal is configured with a correspondence indicating that the target sidelink resource corresponds to the area identification.

8. The method according to any of claims 1 to 7, wherein the active BWP is an active upstream BWP, an active downstream BWP, an initially accessed upstream BWP, an initially accessed downstream BWP, a default upstream BWP, or a default downstream BWP.

9. An apparatus, comprising:

a receiving unit, configured to receive configuration information, where the configuration information configures candidate sidelink resources;

a processing unit, configured to determine a target sidelink resource from the candidate sidelink resources according to the feature information of the activated bandwidth part BWP.

10. The apparatus of claim 9, wherein the characteristic information of the target sidelink resource is the same as the characteristic information of the activated BWP, the characteristic information comprising one or more of subcarrier spacing, cyclic prefix CP, waveform, or frequency domain resource information.

11. The apparatus of claim 9, wherein the characteristic information comprises frequency domain resource information, the frequency domain resource information of the target sidelink resource being different from the frequency domain resource information of the activated BWP.

12. The apparatus according to any of the claims 9 to 11, wherein the processing unit is specifically configured to determine the target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP and a synchronization source of the apparatus, where the target sidelink resource corresponds to the synchronization source.

13. The apparatus of claim 12, wherein the apparatus is configured with a correspondence indicating that the target sidelink resource corresponds to the synchronization source.

14. The apparatus according to any of claims 9 to 11, wherein the processing unit is specifically configured to determine the target sidelink resource from the candidate sidelink resources according to the feature information of the activated BWP and a zone identifier of the apparatus, where the target sidelink resource corresponds to the zone identifier.

15. The apparatus of claim 14, wherein the apparatus is configured with a correspondence indicating that the target sidelink resource corresponds to the area identification.

16. The apparatus according to any of claims 9 to 15, wherein the active BWP is an active upstream BWP, an active downstream BWP, an initially accessed upstream BWP, an initially accessed downstream BWP, a default upstream BWP, or a default downstream BWP.

17. An apparatus, comprising: a processor coupled with a memory, the memory for storing a program that, when executed by the processor, causes an apparatus to perform the method of any of claims 1 to 8.

18. A storage medium having stored thereon a computer program or instructions, which when executed cause a computer to perform the method of any of claims 1 to 8.