WO2020135320A1 - Method executed by user equipment, and user equipment - Google Patents

Abstract

Disclosed is a method executed by a user equipment. The method comprises: receiving uplink and downlink configuration information from a base station, wherein the uplink and downlink configuration information comprises a reference sub-carrier spacing, uplink time slot quantity information, and/or a threshold value of an uplink time slot; and determining, according to the received uplink and downlink configuration information, time slot resource quantity information available to a sidelink, and sending the sidelink uplink and downlink configuration information comprising the determined time slot resource quantity information, wherein the number of bits of the determined time slot resource quantity information is less than or equal to the number of bits of the uplink time slot quantity information.

Description

Method performed by user equipment and user equipment Technical field

The present invention relates to the technical field of wireless communication, and in particular, to a method executed by user equipment and a corresponding user equipment.

Background technique

In a traditional cellular network, all communications must go through the base station. The difference is that D2D communication (Device-to-Device communication) refers to a communication method that is directly performed between two user equipments without being forwarded by a base station or a core network. At the RAN#63 plenary meeting of the 3rd Generation Partnership Project (3GPP) in March 2014, the research topic on using LTE equipment to achieve near-D2D communication services was approved (see Non-Patent Document 1). The functions introduced by LTE Release 12 D2D include:

1) Discovery function between neighboring devices in the LTE network coverage scenario;

2) Direct broadcast communication (Broadcast) function between adjacent devices;

3) The upper layer supports unicast (Unicast) and multicast (Groupcast) communication functions.

At the 3GPP RAN#66 plenary meeting in December 2014, the enhanced LTE eD2D (enhanced D2D) research project was approved (see Non-Patent Document 2). The main functions introduced by LTE Release 13 eD2D include:

1) D2D discovery without network coverage scenarios and some network coverage scenarios;

2) Priority handling mechanism for D2D communication.

Based on the design of the D2D communication mechanism, in June 2015, the 3GPP RAN#68 plenary meeting approved the V2X feasibility study subject based on D2D communication. V2X expresses Vehicle to everything, hoping to realize the interaction between the vehicle and all physical information that may affect the vehicle, the purpose is to reduce accidents, alleviate traffic congestion, reduce environmental pollution and provide other information services. V2X mainly includes 4 aspects:

1) V2V, Vehicle to Vehicle, ie vehicle-to-vehicle communication;

2) V2P, Vehicle to Pedestrian, that is, the vehicle sends a warning to pedestrians or non-motor vehicles;

3) V2N, Vehicle to Network, that is, the vehicle is connected to the mobile network;

4) V2I, Vehicle to Infrastructure, that is, communication between vehicles and road infrastructure.

3GPP divides the research and standardization of V2X into three stages. The first phase was completed in September 2016, mainly focusing on V2V, based on LTE Release 12 and Release 13 D2D (also known as Sidelink edge connection), that is, the development of proximity communication technology (see Non-Patent Document 3). V2X stage 1 introduces a new D2D communication interface, called PC5 interface. The PC5 interface is mainly used to solve the problem of cellular vehicle networking communication in high-speed (up to 250 km/h) and high node density environments. Vehicles can exchange information such as position, speed, and direction through the PC5 interface, that is, vehicles can communicate directly through the PC5 interface. Compared with D2D proximity communication, the functions introduced by LTE Release 14 V2X mainly include:

1) Higher density DMRS to support high-speed scenarios;

2) Introduce sub-channel (sub-channel) to enhance resource allocation;

3) Introduce a semi-persistent user equipment sensing mechanism.

The second phase of the V2X research topic belongs to the LTE Release 15 research category (see Non-Patent Document 4). The main features introduced include high-order 64QAM modulation, V2X carrier aggregation, short TTI, and the feasibility study of transmit diversity.

At the 3GPP RAN#80 plenary meeting in June 2018, the corresponding third-stage V2X feasibility study project based on 5G NR network technology (see Non-Patent Document 5) was approved. The research plan for this subject includes the design of the Sidelink synchronization mechanism. At the 3GPP RAN1#94 meeting in August 2018, the design of the NR V2X synchronization mechanism included the following conclusions (see Non-Patent Document 6):

The NR V2X synchronization mechanism contains at least the following:

1) Design of Sidelink synchronization signal;

2) PSBCH design and V2X MIB;

3) Sidelink synchronization source and synchronization process, where Sidelink synchronization source contains at least GNSS, gNB, NR UE.

The solution of the present invention is mainly aimed at the design of NR V2X MIB. A specific invention solution is a method for determining TDD configuration information in Sidelink broadcast information.

Existing technical literature

Non-patent literature

Non-Patent Document 1: RP-140518, Work itemproposal LTE Device to Device Proximity Services

Non-Patent Document 2: RP-142311, Work Item Proposal for Enhanced LTE Device to Device Proximity Services

Non-Patent Document 3: RP-152293, New WIproposal: Support for V2V services based on LTE Sidelink

Non-Patent Document 4: RP-170798, New WID on 3GPP V2X Phase 2

Non-patent literature 5: RP-181480, New SID Proposal: Study NR V2X

Non-Patent Literature 6: RAN1#94, Chair notes, section 7.2.4.1.3

Summary of the invention

In order to solve at least part of the above problems, the present invention provides a method performed by a user equipment and user equipment, which can effectively perform uplink and downlink configuration in communication based on edge connection.

According to the present invention, a method performed by a user equipment is proposed, including: receiving uplink and downlink configuration information from a base station, where the uplink and downlink configuration information includes reference subcarrier spacing, uplink timeslot number information, and/or uplink timeslot information Threshold value; and determining the number of timeslot resources available for the edge connection according to the received uplink and downlink configuration information, and sending the edge connection uplink and downlink configuration information including the determined number of timeslot resource information, wherein the determined The number of bits of the time slot resource number information is less than or equal to the number of bits of the uplink time slot number information.

In addition, according to the present invention, a method performed by a user equipment is proposed, including: receiving uplink and downlink configuration information from a base station, the uplink and downlink configuration information including reference subcarrier spacing, and/or uplink slot number information; and according to The received uplink and downlink configuration information and the threshold value of the uplink time slot pre-configured in the pre-configuration information of the user equipment determine the information of the number of time slot resources available for the edge connection, and send the information including the determined time The edge of the slot resource number information is connected to the uplink and downlink configuration information, wherein the determined bit number of the slot resource number information is less than or equal to the bit number of the uplink slot number information.

In addition, according to the present invention, a method performed by a user equipment is proposed, including: receiving edge connection uplink and downlink configuration information from a transmitting user equipment different from the user equipment, the edge connection uplink and downlink configuration information including an indication An indicator of at least one uplink and downlink configuration pattern; and at least one uplink and downlink preconfigured from the preconfiguration information of the user equipment according to the indicator included in the received uplink and downlink configuration information of the edge connection The list of configuration styles determines the corresponding upstream and downstream configuration styles.

In addition, according to the present invention, a method performed by a user equipment is proposed, including: receiving edge connection uplink and downlink configuration information from a transmitting user equipment different from the user equipment, the edge connection uplink and downlink configuration information including at least one An uplink and downlink configuration pattern, where the uplink and downlink configuration pattern includes: a configuration period, and/or the number of edge connection resources or the number of uplink time slots in the configuration period; and determining an edge connection according to the received uplink and downlink configuration information of the edge connection Available resources.

In addition, according to the present invention, a method performed by a user equipment is proposed, including: receiving edge connection uplink and downlink configuration information from a transmitting user equipment different from the user equipment, the edge connection uplink and downlink configuration information including at least one An uplink and downlink configuration pattern. The uplink and downlink configuration pattern includes: a configuration period, and/or an offset value in at least one configuration period; and determining available resources for the edge connection according to the received uplink and downlink configuration information of the edge connection.

In addition, according to the present invention, a method performed by a user equipment is proposed, including: receiving edge connection system information from a sending user equipment different from the user equipment, the edge connection system information including first indication information and second Indication information, reference subcarrier interval, configuration period of the first uplink and downlink configuration pattern, configuration period of the second uplink and downlink configuration pattern, and/or direct frame number; and according to the received information included in the edge connection system information The first indication information, the second indication information, the reference subcarrier interval, the configuration period of the first uplink and downlink configuration pattern, the configuration period of the second uplink and downlink configuration pattern, and/or the direct The frame number determines the edge connection resource offset value or edge connection resource slot number of the first uplink and downlink configuration pattern and/or the second uplink and downlink configuration pattern.

Preferably, the first indication information or the second indication information includes a slot number indication or a symbol number indication of an edge connection synchronization system information block.

In addition, according to the present invention, a method performed by a user equipment is proposed, including: receiving edge connection system information from a sending user equipment different from the user equipment, the edge connection system information including first indication information and second Indication information, reference subcarrier interval, configuration period of the first uplink and downlink configuration pattern, configuration period of the second uplink and downlink configuration pattern, direct frame number, third indication information, and/or number indication of the edge connection synchronization system information block, Wherein, the third indication information indicates an actually sent edge connection synchronization system information block; and the first indication information, the second indication information, and the reference included according to the received edge connection system information Subcarrier interval, the configuration period of the first uplink and downlink configuration pattern, the configuration period of the second uplink and downlink configuration pattern, the direct frame number, the third indication information, and/or the edge connection synchronization system The number indication of the information block determines the edge connection resource offset value or edge connection resource slot number of the first uplink and downlink configuration pattern and/or the second uplink and downlink configuration pattern.

Preferably, the first indication information or the second indication information includes a slot number indication or a symbol number indication of an edge connection synchronization system information block.

In addition, according to the present invention, there is proposed a user equipment, including: a processor; and a memory, storing instructions, wherein the instructions execute the above method when executed by the processor.

According to the above-mentioned solution of the present invention, uplink and downlink configurations can be efficiently performed in communication based on edge connection.

BRIEF DESCRIPTION

The above and other features of the present invention will become more apparent through the following detailed description in conjunction with the drawings, in which:

FIG. 1 is a schematic diagram showing Rel-15 NR TDD configuration information in the existing 3GPP standard specification.

2 is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present invention.

3 is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present invention.

4 is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present invention.

FIG. 5 is a flowchart showing a method performed by a user equipment according to Embodiment 4 of the present invention.

6 is a block diagram showing user equipment UE according to the present invention.

detailed description

The present invention will be described in detail below with reference to the drawings and specific embodiments. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, for the sake of simplicity, a detailed description of well-known technologies that are not directly related to the present invention is omitted to prevent confusion in understanding the present invention.

The following uses the 5G mobile communication system and its subsequent evolution as an example application environment, and specifically describes multiple embodiments according to the present invention. However, it should be pointed out that the present invention is not limited to the following embodiments, but is applicable to more other wireless communication systems, such as a communication system after 5G and a 4G mobile communication system before 5G.

The following describes some terms related to the present invention. Unless otherwise specified, the terms related to the present invention are defined here. The terminology given by the present invention may adopt different naming methods in LTE, LTE-Advanced, LTE-Advanced Pro, NR and later communication systems, but the unified terminology adopted in the present invention, when applied to a specific system, It can be replaced with the terminology used in the corresponding system.

3GPP: 3rd Generation Partnership Project, Third Generation Partnership Project

LTE: LongTerm Evolution, long-term evolution technology

NR: New Radio, new wireless, new air interface

PDCCH: Physical Downlink Control Channel, physical downlink control channel

DCI: Downlink Control Information, downlink control information

PDSCH: Physical Downlink Shared Channel, physical downlink shared channel

UE: User Equipment, user equipment

eNB: evolved NodeB, evolved base station

gNB: NR base station

TTI: Transmission Time Interval, transmission time interval

OFDM: Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing

C-RNTI: Cell Radio Network Temporary Identifier, the temporary identifier of the cell wireless network

CSI: Channel State Indicator, channel state indicator

HARQ: Hybrid Automatic Request, hybrid automatic repeat request

CSI-RS: CSI-ReferenceSignal, channel state measurement reference signal

CRS: Cell Reference, cell-level reference signal

PUCCH: Physical Uplink Control Channel, physical uplink control channel

PUSCH: Physical Uplink Shared Channel, physical uplink shared channel

UL-SCH: Uplink Shared Channel, uplink shared channel

Sidelink: edge link

SCI: Sidelink Control Information, edge connection control information

PSCCH: Physical Sidelink Control Channel, physical edge connection control channel

MCS: Modulation and Coding Scheme, modulation and coding scheme

PRB: Physical Resource Block, physical resource block

PSSCH: Physical Sidelink Shared Channel, physical edge connection shared channel

FDM: Frequency Division Multiplexing, frequency division multiplexing

RRC: Radio Resource Control, radio resource control

RSRP: Reference Signal Receiving Power, reference signal received power

SRS: SoundingReferenceSignal, detection reference signal

DMRS: Demodulation Reference Signal, demodulation reference signal

CRC: Cyclic Redundancy Check, cyclic redundancy check

PSDCH: Physical Sidelink Discovery Channel, physical edge connection discovery channel

PSBCH: Physical Sidelink Broadcast Channel, physical edge connection broadcast channel

SFI: Slot Format Indication, time slot format indication

TDD: Time Division Duplexing, time division duplex

FDD: Frequency Division Duplexing, frequency division duplex

SIB1: System Information Block Type 1, system information block type 1

SLSS: Sidelink synchronization Signal, edge connection synchronization signal

PSSS: Primary, Sidelink, Synchronization, Signal, edge-connected primary synchronization signal

SSSS: Secondary, Sidelink, Synchronization, Signal, edge connection secondary synchronization signal

PCI: Physical Cell ID, physical cell ID

PSS: Primary Synchronization Signal, the main synchronization signal

SSS: Secondary Synchronization Signal, secondary synchronization signal

BWP: BandWidthPart, bandwidth segment/part

GNSS: Global Navigation System, Global Navigation Satellite Positioning System

The following is a description of the prior art associated with the solution of the present invention. Unless otherwise specified, the same terms in the specific embodiments have the same meanings as in the prior art.

It is worth noting that V2X and Sidelink involved in the present invention have the same meaning. V2X in the text can also mean Sidelink; similarly, Sidelink in the text can also mean V2X, and no specific distinction or limitation will be made in the following text.

The uplink and downlink configuration information and the TDD configuration information involved in the present invention have the same meaning. The uplink and downlink configuration information and the TDD configuration information in this article can be replaced equally. Similarly, sidelink uplink and downlink configuration information and sidelink TDD configuration information can be replaced identically, and the meanings of the two are the same.

The TDD configuration information and the sidelink TDD configuration information involved in the embodiments of the present invention include at least one TDD configuration pattern. The TDD configuration pattern contains corresponding configuration information, such as configuration period and reference subcarrier interval.

In the specification of the present invention, the uplink resource may refer to a sidelink resource, and the sidelink resource may represent an uplink resource. Similarly, uplink time slot resources correspond to sidelink time slot resources, and uplink symbol resources correspond to sidelink symbol resources.

NR TDD configuration information indication and determination method

The NR base station gNB configures cell-level TDD configuration information through TDD-UL-DL-ConfigCommon in SIB1, which includes:

·Reference subcarrier spacing μ _ref ;

· High-level parameter patternl (this information element is mandatory and represents TDD configuration pattern 1, the same below), which includes the following high-level parameters:

■Configuration period P(ms);

■ The number of downlink time slots d _slots , the downlink time slots only contain downlink OFDM symbols (may be called DL-only time slots);

■Number of downlink OFDM symbols d _sym ;

■Number of uplink time slots u _slots , the uplink time slots only contain uplink OFDM symbols (may be called UL-only time slots);

■Number of uplink OFDM symbols u _sym .

The period of the above configuration information is Pms, corresponding to continuous

Time slots. FIG. 1 shows the specific meaning of each high-level parameter included in pattern1. Among S time slots, the first are d _slots and downlink slots, and u _slots and upstream slots are located at the end of S slots. d _sym downlink OFDM symbols are located after the downlink time slot, u _sym uplink OFDM symbols are located before the uplink time slot, and the remaining

Each OFDM symbol is an X symbol (X represents a flexible symbol). The X symbol may be a downlink symbol or an uplink symbol in different application scenarios, or as a guard interval symbol between downlink and uplink. Among them, for normal CP (Normal CP),

For Extended CP (Extended CP),

The TDD-UL-DL-ConfigCommon in SIB1 may contain a high-level parameter pattern2 (this information element is Optional, indicating TDD configuration pattern 2, the same below). The configuration information of pattern2 and pattern1 has the same form (the parameters of pattern2 include: period P2, d _{slots, 2} , u _{slots, 2} , d _{sym, 2} , u _{sym, 2} ), and the meanings of the corresponding parameters are the same as the corresponding parameters of pattern1. The reference subcarrier spacing μ _{ref is the} same as pattern1, so the reference subcarrier spacing μ _ref will not be repeatedly configured for pattern2. The period of the above configuration information is P2 ms, corresponding to continuous

Time slots. Among S2 time slots, first are d _{slots, 2} downlink slots, u _{slots, and 2} uplink slots are located at the end of S2 slots. d _{sym, 2} downlink OFDM symbols are located after the downlink time slot, u _{sym, 2} uplink OFDM symbols are located before the uplink time slot, and the rest

Each OFDM symbol is an X symbol (X represents a flexible symbol). The X symbol may be a downlink symbol or an uplink symbol in different application scenarios, or as a guard interval symbol between downlink and uplink. Among them, for normal CP (Normal CP),

For Extended CP (Extended CP),

When the TDD-UL-DL-ConfigCommon contains both pattern1 and pattern2, the configuration period of the TDD configuration information is (P+P2) ms, including the above S and S2 time slots (first in the time domain is S, followed by S2 ).

The periods P and P2 in the above configuration information must meet the following conditions:

1) P is a divisor of 20, that is, P is divisible by 20, and the first time-domain symbol of every 20/P periods must be the first symbol of an even frame;

2) P+P2 is a divisor of 20, that is, P+P2 is divisible by 20, and the first time-domain symbol of every 20/(P+P2) cycles must be the first symbol of an even frame.

The possible values of P and P2 include {0.5, 0.625, 1, 1.25, 2, 2.5, 5, 10} ms. The values of P and P2 also include 3ms and 4ms, which is represented by IE: dl-UL-TransmissionPeriodicity-v1530. When the base station configures dl-UL-TransmissionPeriodicity-v1530 in pattern1/2, the UE ignores the dl-UL-TransmissionPeriodicity corresponding to pattern1/2.

NRSSB

The cell search indicates the process of the UE acquiring cell time synchronization and frequency synchronization, and the process of the UE acquiring the cell ID (PCI, physical cell identification) of the cell. In Rel-15NR, the UE performs the cell search process by receiving the synchronization signal. The synchronization signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS).

In Rel-15NR, PSS, SSS, and PBCH together form an SS/PBCH block, or SSB for short, which is a synchronous system information block. PSS and SSS jointly carry the PCI of the cell, and PBCH carries the master information block (Master Information Block, MIB) of the cell. In the following text of the present invention, SSB is used to represent the synchronization system information block. The SSB occupies 4 consecutive symbols in the time domain and 240 consecutive subcarriers in the frequency domain. The specific implementation of the present invention is only related to the time domain structure of the SSB, so the frequency domain resources and structure of the SSB will not be described in detail.

SSB supports subcarrier spacing SCS=15kHz, 30kHz, 120kHz, 240kHz. On the same segment of frequency domain resources (that is, a continuous segment of 240 subcarriers), the base station periodically sends SSBs, and all SSBs in each cycle are called an SSB burst. The SSB burst time domain is all concentrated in a 5ms window (SSB 5ms window). In NR, the maximum number of SSBs in the 5 ms window of SSB is recorded as L, and the following requirements must be met:

1) L = 4, carrier frequency ≤ 3G

2) L = 8, 3G <carrier frequency ≤ 6G

3) L=64, carrier frequency>6G

Number all SSBs within the 5ms window of the SSB, taking the carrier frequency> 6G as an example, the SSB number (SSB index) is 0-63, and the SSB number (a total of 6 bits) is carried by the PBCH.

TS38.213 defines a total of five SSB mapping methods in the time domain, which are expressed as Case A, B, C, D, and E, respectively. The first symbol of the first time slot of the 5ms window is numbered as symbol 0 (index=0), and the five mapping methods are specifically:

1) Case A (SSB SCS = 15kHz): The first symbol number of each SSB in the SSB burst is expressed as {2, 8} + 14*n; where, if the carrier frequency ≤ 3G, n = 0, 1; 3G <carrier frequency ≤ 6G, then n = 0, 1, 2, 3;

2) Case B (SSB SCS = 30kHz): The first symbol number of each SSB in the SSB burst is expressed as {4, 8, 16, 20} + 28*n; where, if the carrier frequency ≤ 3G, n = 0 ; If 3G <carrier frequency ≤ 6G, then n = 0, 1;

3) Case C (SSB SCS = 30kHz): The first symbol number of each SSB in the SSB burst is expressed as {2, 8} + 14*n; where, if the carrier frequency ≤ 3G, n = 0, 1; 3G <carrier frequency ≤ 6G, then n = 0, 1, 2, 3;

4) Case D (SSB SCS = 120kHz): The first symbol number of each SSB in the SSB burst is expressed as {4, 8, 16, 20} + 28*n; where for carrier frequency> 6G, n = 0 , 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18;

5) Case E (SSB SCS = 240kHz): The first symbol number of each SSB in the SSB burst is expressed as {8, 12, 16, 20, 32, 36, 40, 44} +56*n; where, for the carrier Frequency>6G, then n=0,1,2,3,5,6,7,8.

For the correspondence between the SSB mapping method and the carrier frequency in the above, refer to the following table:

Table 5.4.3.3-1: SS grid entries (FR1) applicable for each operating band

Table 5.4.3.3-2: SS grid entries (FR2) applicable for each operating band

In the above table, FR1 and FR2 represent two carrier frequency ranges (Frequency), corresponding to the following:

Table 5.1-1: Definition of frequency range

Frequency range specification	Corresponding frequency range
FR1	450MHz-6000MHz
FR2	24250MHz-52600MHz

When the UE performs a cell search, it can determine the corresponding SSB subcarrier spacing and SSB mapping method according to the carrier frequency where it is located. By receiving and decoding the PBCH, the UE can determine the SSB number and field indication, and then determine the downlink timing relationship (DL timing) of the cell through the SSB mapping method.

NR actually sends an SSB indication

The NR base station gNB indicates the SSB actually sent in the SSB burst through SIB1 or ssb-PositionsInBurst in ServingCellConfigCommon. The specific instructions are as follows:

1) For L = 4, carrier frequency ≤ 3G, represented by a 4-bit bitmap, each bit corresponds to an SSB in the SSB burst. Setting this bit to 1 indicates that the base station has sent the corresponding SSB; setting 0 indicates that the base station has not sent the corresponding SSB;

2) For L = 8, 3G <carrier frequency ≤ 6G, using an 8-bit bitmap representation, each bit corresponds to an SSB in the SSB burst. Setting this bit to 1 indicates that the base station has sent the corresponding SSB; setting 0 indicates that the base station has not sent the corresponding SSB;

3) For L=64 and carrier frequency>6G, 8 bits (inOneGroup)+8 bits (groupPresence) are used. Each bit of groupPresence is set to 1 indicates that the corresponding group exists, and a 0 is set to indicate that the corresponding group does not exist; each bit of inOneGroup is set to 1 indicates that the base station sent the corresponding SSB in the group corresponding to the groupPresence set to 1 bit; set to 0 indicates that the base station did not send GroupPresence is set to 1 bit corresponding to the corresponding SSB in the group; groupPresence is set to 0 bit corresponding to all 8 SSBs in the group indicates that no SSB is sent.

If any one or more symbols of PUSCH, PUCCH, and PRACH coincide with the symbols of the actual SSB, the UE will not send PUSCH, PUCCH, and PRACH; the UE will not send SRS in the time slot where the SSB is actually sent; and the UE It is assumed that the symbol that actually transmits the SSB will not be configured as an uplink symbol in TDD-UL-DL-ConfigurationCommon and TDD-UL-DL-ConfigDedicated.

Sidelink communication scenarios

1) Out-of-Coverage: No two UEs performing Sidelink communication have network coverage (for example, the UE cannot detect any cell that satisfies the "Cell Selection Criteria" at a frequency requiring Sidelink communication).

2) With network coverage (In-Coverage): Both UEs that perform Sidelink communication have network coverage (for example, the UE detects at least one cell that meets the "cell selection criteria" on the frequency that needs Sidelink communication).

3) Partial-Coverage: One UE that performs Sidelink communication has no network coverage, and the other UE has network coverage.

From the UE side, the UE has only two scenarios: no network coverage and network coverage. Part of the network coverage is described from the connection of UEs on both sides of the Sidelink communication.

Rel-14/15 LTE V2X SLSS/PSBCH and V2X MIB

LTE Sidelink uses LTE uplink resources, and its physical layer channel structure design is similar to LTE uplink.

Sidelink synchronization signal (SLSS) is defined in LTE Sidelink, which is used for frequency and time synchronization between two UEs performing Sidelink communication, especially when at least one of the UEs does not have network coverage, one UE acquires another UE The SLSS synchronization signal sent. SLSS contains primary synchronization signal PSSS and secondary synchronization signal SSSS. PSSS and SSSS can carry SLSS ID. In cellular communication with LTE and NR, PCI is carried by primary synchronization signal (LTE/NR PSS) and secondary synchronization signal (LTE/NR SSS) The principle is the same.

LTE Sidelink also defines the PSBCH, which is used to broadcast Sidelink-related system information (system information), where,

1) The time-frequency resources used by the PSBCH occupy 72 subcarriers in the center of the Sidelink carrier in the frequency domain and one subframe for the PSBCH in the time domain, but exclude the REs used for the DMRS reference signal and the above-mentioned SLSS synchronization signal .

2) Sidelink related system information transmitted on PSBCH can be MIB-SL-V2X (MasterInformationBlock-SL-V2X, the main information block for V2X), which includes:

■ The configuration of transmission bandwidth, expressed by the parameter sl-Bandwidth, the value is {6, 15, 25, 50, 75, 100} RBs.

■ TDD upstream and downstream configuration information, using the parameter tdd-ConfigSL. There are 8 situations in tdd-ConfigSL. None means that the Sidelink carrier sending the MIB is FDD, 0 means TDD UL/DL Configuration 0, 1 means TDD UL/DL Configuration 1, and so on.

■ The DFN (direct frame number) used to transmit SLSS and PSBCH is expressed by the parameter directFrameNumber, and the value ranges from 0 to 1023.

■ The DSFN (direct subframe number) used to transmit SLSS and PSBCH is expressed by the parameter directSubframeNumber, and the value ranges from 0 to 9.

■ There is a network coverage flag indicating whether the UE transmitting the MIB-SL-V2X has LTE network coverage, using the parameter inCoverage. When the value is TRUE, it indicates that there is LTE network coverage; when the value is FALSE, it indicates that there is no LTE network coverage.

Rel-14/15 LTE V2X UE sends V2X MIB

When the V2X UE has data to transmit, the UE needs to send the V2X MIB together. The method and process for the V2X UE to determine each domain in the V2X MIB are as follows:

1> On the frequency domain resource for Sidelink communication, if the V2X UE is a UE with network coverage, then:

2> The above UE sets inCoverage to TRUE;

2> The UE receives the SIB2 broadcasted by the selected cell on the frequency domain resource. The SIB2 contains ul-Bandwidth, and the UE determines the sl-Bandwidth according to the value of ul-Bandwidth;

2> If the cell broadcast message SIB1 contains tdd-Config, then:

3> The UE sets the subframeAssignmentSL as the corresponding field of the tdd-Config contained in the selected cell broadcast SIB1 (subframeAssignment in tdd-Config);

2> Otherwise:

3> The above UE sets subframeAssignmentSL to none;

1> Otherwise, if there is no cell coverage on the frequency domain resources for Sidelink communication, and v2x-InterFreqInfoList in RIBConnectionReconfiguration or SIB21 of the serving cell or the primary cell contains the above frequency domain resources, then:

2> The above UE sets inCoverage to TRUE;

2> The above-mentioned UE sets sl-Bandwidth to the value of the corresponding field in v2x-InterFreqInfoList;

2> The above-mentioned UE sets subframeAssignmentSL as the value of the corresponding field in the preconfiguration information (for example, v2x-CommPreconfigGeneral);

1> Otherwise, if there is no cell coverage on the frequency domain resources for Sidelink communication, and the UE selects GNSS as the synchronization source, and SL-V2X-Preconfiguration does not include syncOffsetIndicator3, then:

2> The above UE sets inCoverage to TRUE;

2> The above-mentioned UE sets sl-Bandwidth and subframeAssignmentSL as the values of the corresponding fields in the preconfiguration information (for example, v2x-CommPreconfigGeneral);

1> Otherwise, if the UE selects the synchronization source UE, then:

2> The above UE puts inCoverage in FALSE;

2> The above-mentioned UE sets sl-Bandwidth and subframeAssignmentSL as the values of the corresponding fields of the received MasterInformationBlock-SL-V2X;

1> Otherwise:

2> The above UE puts inCoverage in FALSE;

2> The above-mentioned UE sets sl-Bandwidth and subframeAssignmentSL as the values of the corresponding fields in the preconfiguration information (for example, v2x-CommPreconfigGeneral);

1> The UE determines the values of directFrameNumber and directSubframeNumber according to the subframes transmitting SLSS.

Explanation of sidelink resource threshold value/resource offset value/resource slot number

1) Sidelink resource threshold: the sidelink resource threshold can also be called the sidelink resource threshold. The specific meaning of the sidelink resource threshold involved in the embodiments of the present invention means the minimum number of sidelink resources in a configuration period, or the minimum number of uplink resources in a configuration period, and the unit of the number is a time slot or a symbol, that is, If the threshold is u _thres, the number of uplink resource within a number of resources within the period sidelink actual configuration or a configuration cycle is not less than the threshold u _thres.

2) Sidelink resource offset value: the sidelink resource offset value represents the offset (offset) of available sidelink resources or uplink resources relative to the starting point within a configuration period. The unit of Sidelink resource offset value is time slot or symbol. Take μ=0 (the subcarrier interval is 15kHz) and the configuration period P=5ms as an example: if the unit of the sidelink resource offset value is a time slot and the offset is 2, the available resources or uplink resources of the sidelink correspond to the 5ms configuration The starting offset of the cycle is 2, which means that in the 5ms cycle, the available resources of the sidelink are the third slot to the fifth slot.

3) Sidelink resource time slot numbers: All time slots within a configuration period P are numbered in time slot units. The number of each time slot is called a sidelink resource time slot number. Still taking μ=0 (the subcarrier interval is 15 kHz) and the configuration period P=5ms as an example: the slot numbers within 5ms are #0, #1, #2, #3, #4 in sequence. If the time slot number of the sidelink resource is 2, it means that the time slot number 2 to the time slot number 4 are available resources or uplink resources of the sidelink. It is worth noting that there is a one-to-one correspondence between the sidelink resource offset value and the sidelink resource slot number.

In the embodiment of the present invention, the UE determining the sidelink resource offset value or the sidelink resource slot number may also indicate that the UE has determined the number of time slots or symbols of sidelink available resources in the configuration period.

[Example 1]

2 is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present invention.

As shown in FIG. 2, in the first embodiment of the present invention, the steps performed by the user equipment include:

In step 201, the user equipment receives system information sent from gNB, and the system information includes TDD configuration information (uplink and downlink configuration information). The door TDD configuration information includes a reference subcarrier spacing μ _ref, and / or uplink timeslot (Sidelink slot resource) limits u _thres. The TDD configuration information includes an indication of the number of uplink slots u _slots (represented by N _BS bits).

In step 203, the user equipment determines the number of available time slot resources of Sidelink according to the received TDD configuration information, and sends Sidelink communication system information including the determined number of time slot resources. The Sidelink communication system information includes Sidelink TDD configuration information. The Sidelink TDD configuration information includes N bits. Specific implementation manners of the user equipment determining the value of the N-bit configuration information (represented by nrofSLResources) include but are not limited to:

1) If satisfied

Suppose

Then the number of uplink slots u _slots corresponds to the specific interpretation method of nrofSLResources and nrofSLResources as shown in Table 1. The specific interpretation method of nrofSLResources represents the actual number of available slot resources of Sidelink.

Table 1. Method for determining the value of N-bit configuration information

Among them, ceil() means rounding up function; floor() means rounding down function.

or,

in case

Then nrofSLResources=2 ^N -1, nrofSLResources is interpreted as (2 ^N -1)×M.

2) Otherwise, the number of upstream slots u _slots is equivalent to nrofSLResources, that is, they are equal.

Or, the second specific implementation is as follows:

1) If satisfied

Suppose

The corresponding way of the number of uplink time slots u _slots and nrofSLResources and the specific interpretation method of nrofSLResources is shown in Table 2. The specific interpretation method of nrofSLResources represents the number of available time slot resources of Sidelink.

Table 2. Methods for determining the value of N-bit configuration information

Among them, ceil() means rounding up function; floor() means rounding down function.

or,

in case

Then nrofSLResources=2 ^N -1, nrofSLResources is interpreted as (2 ^N -1)×M+u _thres .

2) _{Otherwise, nrofSLResources = u slots -u thres,} nrofSLResources interpretation equals u _slots.

Or, the third specific implementation is as follows:

1) If N <N _BS is satisfied, assume

The corresponding way of the number of uplink slots u _slots and nrofSLResources and the specific interpretation method of nrofSLResources is shown in Table 3. The specific interpretation method of nrofSLResources represents the number of available time slot resources of Sidelink.

Table 3. Methods for determining the value of N-bit configuration information

Among them, floor () represents the rounding function.

2) Otherwise, the number of upstream slots u _slots is equivalent to nrofSLResources, that is, they are equal.

Optionally, in step 201 of Embodiment 1 of the present invention, the threshold of the uplink time slot (Sidelink time slot resource) may be pre-configured in the pre-configuration information of the user equipment. Or, the threshold value is determined through a predefined definition.

[Example 2]

3 is a flowchart illustrating a method performed by a user equipment according to Embodiment 2 of the present invention.

As shown in FIG. 3, in the second embodiment of the present invention, the steps performed by the user equipment include:

In step 301, the sending user equipment sends Sidelink TDD configuration information to the receiving user equipment. The Sidelink TDD configuration information includes an indicator field (indicator). The indication field indicates the number of one or more TDD configuration patterns.

In step 303, according to the indicator included in the Sidelink TDD configuration information received from the sending user equipment, the corresponding TDD is selected from the list of one or more TDD configuration patterns in the pre-configuration information of the receiving user equipment Configuration style. The list of TDD configuration styles includes one or more TDD configuration styles.

Optionally, in step 303, according to the indicator included in the Sidelink TDD configuration information received from the sending user equipment, a corresponding TDD configuration pattern is selected from one or more predefined TDD configuration patterns. Or, select the corresponding TDD configuration style from the list of predefined TDD configuration styles. The TDD configuration style list includes one or more TDD configuration styles.

Optionally, another specific implementation manner of this embodiment is that the sending user equipment sends Sidelink TDD configuration information. The Sidelink TDD configuration information includes one or more configuration styles. The configuration pattern includes the configuration period and/or the number of Sidelink resources or the number of uplink time slots in the configuration period, and the number of Sidelink resources is in units of time slots or symbols; or, the configuration pattern includes the configuration period and/or the configuration period Or, the configuration pattern includes a configuration period and an offset value within two configuration periods, and the resources between the two offset values within the configuration period represent available resources of Sidelink. Specifically, if the two offset values are offset1 and offset2, and the unit of the offset value is slot, if the slot number starts from #0 in the configuration period, it means that the sidelink resource is slot#offset1 to slot#slot2.

[Embodiment 3]

4 is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present invention.

As shown in FIG. 4, in the third embodiment of the present invention, the steps performed by the user equipment include:

In step 401, the sending user equipment sends Sidelink system information (uplink and downlink configuration information) to the receiving user equipment. The Sidelink system information includes first indication information, second indication information, reference subcarrier spacing μ, configuration period P of the first TDD configuration pattern, configuration period P2 of the second TDD configuration pattern, and/or direct frame number (DFN ).

The first indication information includes a time slot number indication of a Sidelink synchronization system information block (S-SSB), or a symbol number indication, expressed as N; or, the second indication information includes a sidelink synchronization system information block (S-SSB) ) The slot number indication, or symbol number indication, is denoted as N.

In step 403, the receiving user equipment receives the Sidelink system information, and according to the first indication information, the second indication information, the reference subcarrier interval, and the first uplink and downlink included in the Sidelink system information The configuration period of the configuration pattern, the configuration period of the second uplink and downlink configuration pattern, and/or the direct frame number to determine the Sidelink resource offset value of the first TDD configuration pattern and/or the second TDD configuration pattern, or Sidelink resource slot number. Specific methods include the following, but not limited to the following methods:

1) If the DFN is even, then:

2) If mod(N/2 ^μ , P+P2)≤P, then N represents the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern;

2) Otherwise, N represents the Sidelink resource offset value or Sidelink resource slot number of the second TDD configuration pattern;

1) If DFN is odd, then:

2) If

N represents the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern;

2) Otherwise, N represents the Sidelink resource offset value or Sidelink resource slot number of the second TDD configuration pattern.

Among them, mod () said to find the remainder operation.

Optionally, in step 401 of Embodiment 3 of the present invention, another specific implementation manner is that the sending user equipment sends Sidelink system information to the receiving user equipment. The Sidelink system information includes indication information, reference subcarrier spacing μ, configuration period P of the first TDD configuration pattern, configuration period P2 of the second TDD configuration pattern, and/or direct frame number (DFN).

According to the time domain resources of the sidelink system information and/or the predefined S-SSB mapping mode, the receiving user equipment determines the time slot number of the sidelink synchronization system information block, which is represented as N.

Optionally, corresponding to the optional step 401 of the foregoing third embodiment, and step 403 of the third embodiment of the present invention, another specific implementation manner is that the receiving user equipment receives the Sidelink system information and includes the Sidelink system information according to The indication information, the reference subcarrier interval, the configuration period of the first uplink and downlink configuration pattern, the configuration period of the second uplink and downlink configuration pattern, the direct frame number, and/or the N Determine the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern and/or the second TDD configuration pattern. Specific methods include the following schemes, but are not limited to the following schemes.

1) If the DFN is even, then:

2) If mod(N/2 ^μ , P+P2)≤P, then N represents the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern;

2) Otherwise, N represents the Sidelink resource offset value or Sidelink resource slot number of the second TDD configuration pattern;

1) If DFN is odd, then:

2) If

N represents the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern;

2) Otherwise, N represents the Sidelink resource offset value or Sidelink resource slot number of the second TDD configuration pattern.

Among them, mod () said to find the remainder operation.

[Embodiment 4]

5 is a flowchart illustrating a method performed by a user equipment according to Embodiment 4 of the present invention.

As shown in FIG. 5, in the fourth embodiment of the present invention, the steps performed by the user equipment include:

In step 501, the sending user equipment sends Sidelink system information to the receiving user equipment. The Sidelink system information includes first indication information, second indication information, reference subcarrier spacing μ, configuration period P of the first TDD configuration pattern, configuration period P2 of the second TDD configuration pattern, direct frame number (DFN), a Indication information (third indication information), and/or S-SSB number indication. The third instruction information indicates an instruction to actually send the S-SSB.

The first indication information includes a time slot number indication of the Sidelink synchronization system information block (S-SSB), or a symbol number indication, which is represented as N. Alternatively, the second indication information includes a time slot number indication of the Sidelink synchronization system information block (S-SSB), or a symbol number indication, which is represented as N.

In step 503, the receiving user equipment receives the Sidelink system information. The receiving user equipment determines, according to the third indication information, and/or the S-SSB number indication, and/or N, a specific S-SSB that the sending user equipment actually sends during the S-SSB period Slot number or symbol number N'. Wherein, the specific S-SSB may be the first S-SSB actually sent by the sending user equipment in the S-SSB period, or the last S-SSB. The present invention does not specifically limit this.

In step 505, receive user equipment according to the first indication information, the second indication information, the reference subcarrier interval, the configuration period of the first uplink and downlink configuration pattern included in the sidelink system information, the The configuration period of the second uplink and downlink configuration pattern, the direct frame number, the third indication information, and/or the number indication of the S-SSB determine the first TDD configuration pattern and/or the second TDD configuration Sidelink resource offset value of the style or Sidelink resource slot number. The specific method is as follows:

1) If the DFN is even, then:

2) If mod(N′/2 ^μ , P+P2)≤P, then N′ represents the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern;

2) Otherwise, N’ represents the Sidelink resource offset value or Sidelink resource slot number of the second TDD configuration pattern;

1) If DFN is odd, then:

2) If

Then N'represents the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern;

2) Otherwise, N'represents the Sidelink resource offset value or Sidelink resource slot number of the second TDD configuration pattern.

Among them, mod () said to find the remainder operation.

Optionally, in step 501 of Embodiment 4 of the present invention, another specific implementation manner is that the sending user equipment sends Sidelink system information to the receiving user equipment. The Sidelink system information includes first indication information, reference subcarrier interval μ, configuration period P of the first TDD configuration pattern, configuration period P2 of the second TDD configuration pattern, direct frame number (DFN), and another indication information ( Second indication information), and/or S-SSB number indication. The second instruction information indicates an instruction to actually send the S-SSB.

According to the time domain resource of the sidelink system information, and/or the number indication of the S-SSB, and/or a predefined S-SSB mapping method, the receiving user equipment determines the received sidelink synchronization system information The time slot number of the block, denoted as N.

Optionally, corresponding to the optional step 501 of the foregoing embodiment four, and step 503 of the fourth embodiment of the present invention, another specific implementation manner is based on N, and/or the second indication information, and/or In the defined S-SSB mapping manner, the receiving user equipment determines the time slot number or symbol number N'of a specific S-SSB actually sent by the sending user equipment in the S-SSB period. Wherein, the specific S-SSB may be the first S-SSB actually sent by the sending user equipment in the S-SSB period, or the last S-SSB. The present invention does not specifically limit this.

Optionally, corresponding to the optional step 501 and the optional step 503 of the above-mentioned Embodiment 4, step 505 of Embodiment 4 of the present invention, another specific implementation manner is to receive all the information included in the user equipment according to the sidelink system information. The first indication information, the reference subcarrier interval, the configuration period of the first uplink and downlink configuration pattern, the configuration period of the second uplink and downlink configuration pattern, the direct frame number, the second indication information, The S-SSB number indication, the N, and/or the N'determine the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern and/or the second TDD configuration pattern. The specific method is as follows:

1) If the DFN is even, then:

2) If mod(N′/2 ^μ , P+P2)≤P, then N′ represents the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern;

2) Otherwise, N’ represents the Sidelink resource offset value or Sidelink resource slot number of the second TDD configuration pattern;

1) If DFN is odd, then:

2) If

Then N'represents the Sidelink resource offset value or Sidelink resource slot number of the first TDD configuration pattern;

2) Otherwise, N'represents the Sidelink resource offset value or Sidelink resource slot number of the second TDD configuration pattern.

Among them, mod () said to find the remainder operation.

6 is a block diagram showing user equipment UE according to the present invention. As shown in FIG. 6, the user equipment UE60 includes a processor 601 and a memory 602. The processor 601 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like. The memory 602 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory. The memory 602 stores program instructions. When the instruction is executed by the processor 601, it may execute the above-mentioned method executed by the user equipment described in detail in the present invention.

The method of the present invention and related equipment have been described above in conjunction with preferred embodiments. Those skilled in the art can understand that the methods shown above are only exemplary, and the embodiments described above can be combined with each other without conflict. The method of the present invention is not limited to the steps and order shown above. The network node and the user equipment shown above may include more modules, for example, they may also include modules that can be developed or developed in the future and can be used for base stations, MMEs, or UEs. The various identifications shown above are only exemplary and not limiting, and the present invention is not limited to specific cells as examples of these identifications. Those skilled in the art can make many changes and modifications based on the teachings of the illustrated embodiments.

It should be understood that the above-mentioned embodiments of the present invention may be implemented by software, hardware, or a combination of both software and hardware. For example, the various components inside the base station and the user equipment in the above embodiments can be implemented by a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processing Device, application specific integrated circuit (ASIC), field programmable gate array (FPGA), programmable logic device (CPLD), etc.

In this application, "base station" may refer to a mobile communication data and control switching center with a large transmission power and a wide coverage area, including functions such as resource allocation scheduling, data reception and transmission, and the like. "User equipment" may refer to user mobile terminals, including, for example, mobile phones, notebooks, and other terminal devices that can communicate wirelessly with base stations or micro base stations.

Furthermore, the embodiments of the invention disclosed herein can be implemented on a computer program product. More specifically, the computer program product is a product having a computer readable medium encoded with computer program logic, and when executed on a computing device, the computer program logic provides related operations to achieve The above technical solution of the present invention. When executed on at least one processor of the computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention. Such an arrangement of the invention is typically provided as software, code and/or other data structures arranged or encoded on a computer-readable medium such as an optical medium (eg CD-ROM), floppy disk or hard disk, or such as one or more Firmware or microcode on ROM or RAM or PROM chips or other media, or downloadable software images in one or more modules, shared databases, etc. Software or firmware or such a configuration may be installed on the computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.

In addition, each functional module or each feature of the base station device and terminal device used in each of the foregoing embodiments may be implemented or executed by a circuit, and the circuit is usually one or more integrated circuits. Circuits designed to perform various functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs) or general-purpose integrated circuits, field programmable gate arrays (FPGAs), or other Programming logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above devices. A general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine. The above-mentioned general-purpose processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit. In addition, when advanced technologies that can replace current integrated circuits appear due to advances in semiconductor technology, the present invention can also use integrated circuits obtained using the advanced technologies.

Although the present invention has been shown in conjunction with the preferred embodiments of the present invention, those skilled in the art will understand that various modifications, substitutions, and changes can be made to the present invention without departing from the spirit and scope of the present invention. Therefore, the present invention should not be limited by the above-mentioned embodiments, but should be defined by the appended claims and their equivalents.

Claims (10)

1. A method performed by user equipment, including:

   Receiving uplink and downlink configuration information from the base station, the uplink and downlink configuration information including reference subcarrier interval, uplink timeslot number information, and/or uplink timeslot threshold; and

   Determine the number of timeslot resources available for the edge connection according to the received uplink and downlink configuration information, and send the uplink and downlink configuration information of the edge connection including the determined number of timeslot resources,

   Wherein, the determined bit number of the timeslot resource number information is less than or equal to the bit number of the uplink timeslot number information.
2. A method performed by user equipment, including:

   Receiving uplink and downlink configuration information from the base station, the uplink and downlink configuration information including reference subcarrier interval and/or uplink slot number information; and

   Determine the number of available slot resources for the edge connection according to the received uplink and downlink configuration information and the threshold value of the uplink time slot pre-configured in the pre-configuration information of the user equipment, and send the information including the determined Edge connection uplink and downlink configuration information of the number of timeslot resources,

   Wherein, the determined bit number of the timeslot resource number information is less than or equal to the bit number of the uplink timeslot number information.
3. A method performed by user equipment, including:

   Receiving edge connection uplink and downlink configuration information from a transmitting user equipment different from the user equipment, the edge connection uplink and downlink configuration information including an indicator for indicating at least one uplink and downlink configuration style; and

   Determine the corresponding uplink and downlink configuration style from the list of at least one uplink and downlink configuration style pre-configured in the pre-configuration information of the user equipment according to the indicator included in the received uplink and downlink configuration information of the edge connection .
4. A method performed by user equipment, including:

   Receiving uplink and downlink configuration information of an edge connection from a transmitting user equipment different from the user equipment, the uplink and downlink configuration information of the edge connection includes at least one uplink and downlink configuration style, and the uplink and downlink configuration style includes: a configuration period, and/or The number of edge connection resources or the number of upstream time slots in the configuration period; and

   According to the received uplink and downlink configuration information of the edge connection, determine the available resources of the edge connection.
5. A method performed by user equipment, including:

   Receiving uplink and downlink configuration information of an edge connection from a transmitting user equipment different from the user equipment, the uplink and downlink configuration information of the edge connection includes at least one uplink and downlink configuration style, and the uplink and downlink configuration style includes: a configuration period, and/or Offset value during at least one configuration period; and

   According to the received uplink and downlink configuration information of the edge connection, determine the available resources of the edge connection.
6. A method performed by user equipment, including:

   Receiving edge connection system information from a sending user equipment different from the user equipment, the edge connection system information including first indication information, second indication information, reference subcarrier spacing, configuration period of the first uplink and downlink configuration pattern, and The configuration cycle and/or direct frame number of the two uplink and downlink configuration patterns; and

   According to the first indication information, the second indication information, the reference subcarrier interval, the configuration period of the first uplink and downlink configuration pattern included in the received edge connection system information, the second The configuration period of the uplink and downlink configuration patterns, and/or the direct frame number, determining the edge connection resource offset value or edge connection resource slot of the first uplink and downlink configuration pattern and/or the second uplink and downlink configuration pattern Numbering.
7. The method of claim 6, wherein:

   The first indication information or the second indication information includes a slot number indication or a symbol number indication of an edge connection synchronization system information block.
8. A method performed by user equipment, including:

   Receiving edge connection system information from a sending user equipment different from the user equipment, the edge connection system information including first indication information, second indication information, reference subcarrier spacing, configuration period of the first uplink and downlink configuration pattern, and Second uplink and downlink configuration pattern configuration period, direct frame number, third indication information, and/or number indication of the edge connection synchronization system information block, wherein the third indication information indicates the edge connection synchronization system information block actually sent; as well as

   According to the first indication information, the second indication information, the reference subcarrier interval, the configuration period of the first uplink and downlink configuration pattern included in the received edge connection system information, the second The configuration period of the uplink and downlink configuration patterns, the direct frame number, the third indication information, and/or the number indication of the edge connection synchronization system information block, to determine the first uplink and downlink configuration pattern and/or the Edge connection resource offset value or edge connection resource slot number of the second uplink and downlink configuration pattern.
9. The method of claim 8, wherein:

   The first indication information or the second indication information includes a slot number indication or a symbol number indication of an edge connection synchronization system information block.
10. A user equipment, including:

    Processor; and

    Memory, storing instructions,

    Wherein, when the instruction is executed by the processor, the method according to any one of claims 1-9 is executed.

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