CN111356237A - Method performed by user equipment and user equipment - Google Patents
Method performed by user equipment and user equipment Download PDFInfo
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- CN111356237A CN111356237A CN201811586098.8A CN201811586098A CN111356237A CN 111356237 A CN111356237 A CN 111356237A CN 201811586098 A CN201811586098 A CN 201811586098A CN 111356237 A CN111356237 A CN 111356237A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention provides a method executed by user equipment, which comprises the following steps: receiving uplink and downlink configuration information from a base station, wherein the uplink and downlink configuration information comprises reference subcarrier intervals, uplink time slot number information and/or a threshold value of an uplink time slot; and determining the available time slot resource number information of the edge connection according to the received uplink and downlink configuration information, and sending the edge connection uplink and downlink configuration information comprising the determined time slot resource number information, wherein the bit number of the determined time slot resource number information is less than or equal to the bit number of the uplink time slot number information.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method performed by a user equipment and a corresponding user equipment.
Background
In a conventional cellular network, all communications must pass through the base station. In contrast, D2D communication (Device-to-Device communication) refers to a communication method in which two user equipments directly communicate with each other without forwarding through a base station or a core network. The research topic on the realization of the near D2D communication service with LTE devices was approved at RAN #63 of 3rd Generation partnership project (3 GPP) in 2014 (see non-patent document 1). Functions introduced by LTE Release 12D2D include:
1) discovery function (Discovery) between adjacent devices in an LTE network coverage scenario;
2) a direct Broadcast communication (Broadcast) function between neighboring devices;
3) the higher layer supports Unicast (Unicast) and multicast (Groupcast) communication functions.
On the 3GPP RAN #66 congress of 12 months in 2014, the research project of enhanced LTE eD2D (enhanced D2D) was approved (see non-patent document 2). The main functions introduced by LTE Release 13eD2D include:
1) D2D discovery of no-network coverage scenarios and partial-network coverage scenarios;
2) priority handling mechanism for D2D communications.
Based on the design of the D2D communication mechanism, the V2X feasibility study topic based on D2D communication was approved at the RAN #68 time congress of 3GPP at 6 months 2015. V2X shows that Vehicle to evolution is expected to realize the interaction between Vehicle and all entity information that may affect the Vehicle, in order to reduce accident, slow down traffic jam, reduce environmental pollution and provide other information services.
V2X mainly contains 4 aspects:
1) V2V, Vehicle to Vehicle, i.e. Vehicle-to-Vehicle communication;
2) V2P, Vehicle to peer, i.e. the Vehicle sends a warning to pedestrians or non-motor vehicles;
3) V2N, Vehicle to Network, i.e. Vehicle connected mobile Network;
4) V2I, Vehicle to Infrastructure, i.e. the Vehicle communicates with road Infrastructure etc.
The 3GPP has divided the research and standardization work of V2X into 3 stages. The first phase was completed in 2016 and 9 months, focusing mainly on V2V, and was formulated based on LTE Release 12 and Release 13D 2D (also called Sidelink edge connection), i.e., proximity communication technology (see non-patent document 3). V2X stage 1 introduced a new D2D communication interface, called PC5 interface. The PC5 interface is mainly used to solve cellular internet of vehicles communication problems in high speed (up to 250 km/h) and high node density environments. The vehicles can interact with information such as position, speed and direction through the PC5 interface, i.e., the vehicles can communicate directly with each other through the PC5 interface. Compared with D2D near communication, the functions introduced by LTE Release 14V 2X mainly include:
1) higher density DMRS to support high speed scenarios;
2) introducing a sub-channel (sub-channel) to enhance a resource allocation mode;
3) a user equipment aware (sensing) mechanism with semi-persistent scheduling (semi-persistent) is introduced.
The second stage of the V2X research topic belongs to the LTE Release 15 research category (see non-patent document 4), and the introduced main characteristics include high-order 64QAM modulation, V2X carrier aggregation, short TTI, and feasibility research of transmit diversity.
At the 3GPP RAN #80 congress of 6 months in 2018, the corresponding third stage was approved based on the V2X feasibility study topic of 5G NR network technology (see non-patent document 5). The research project for this subject includes the design of the sildelink synchronization mechanism. At the 3GPP RAN1#94 conference of 8 months in 2018, the design of the NR V2X synchronization mechanism includes the following conclusions (see non-patent document 6):
the NR V2X synchronization mechanism includes at least the following:
1) designing a Sidelink synchronous signal;
2) PSBCH design and V2X MIB;
3) the method comprises a Sidelink synchronization source and a synchronization process, wherein the Sidelink synchronization source at least comprises GNSS, gNB and NR UE.
The scheme of the invention mainly aims at the design of NR V2X MIB. The specific invention scheme is a method for determining TDD configuration information in the Sidelink broadcast information.
Documents of the prior art
Non-patent document
Non-patent document 1: RP-140518, Work item deployment on LTE Device to Device deployment 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 WI propofol: support for V2V services basedon LTE Sidelink
Non-patent document 4: RP-170798, New WID on 3GPP V2X Phase 2
Non-patent document 5: RP-181480, New SID Proposal: study on NR V2X
Non-patent document 6: RAN1#94, Charrman notes, section 7.2.4.1.3
Disclosure of Invention
In order to solve at least part of the above problems, the present invention provides a method performed by a user equipment and a user equipment capable of efficiently performing uplink and downlink configuration in communication based on an edge connection.
According to the invention, there is provided a method performed by a user equipment, comprising: receiving uplink and downlink configuration information from a base station, wherein the uplink and downlink configuration information comprises reference subcarrier intervals, uplink time slot number information and/or a threshold value of an uplink time slot; and determining the available time slot resource number information of the edge connection according to the received uplink and downlink configuration information, and sending the edge connection uplink and downlink configuration information comprising the determined time slot resource number information, wherein the bit number of the determined time slot resource number information is less than or equal to the bit number of the uplink time slot number information.
Further, according to the present invention, there is provided a method performed by a user equipment, comprising: receiving uplink and downlink configuration information from a base station, wherein the uplink and downlink configuration information comprises reference subcarrier intervals and/or uplink time slot number information; and determining available time slot resource number information of edge connection according to the received uplink and downlink configuration information and a threshold value of an uplink time slot preconfigured in the preconfigured information of the user equipment, and sending the edge connection uplink and downlink configuration information including the determined time slot resource number information, wherein the bit number of the determined time slot resource number information is less than or equal to the bit number of the uplink time slot number information.
Further, according to the present invention, there is provided a method performed by a user equipment, comprising: receiving edge connection uplink and downlink configuration information from a sending user equipment different from the user equipment, wherein the edge connection uplink and downlink configuration information comprises an indicator for indicating at least one uplink and downlink configuration style; and determining a corresponding uplink and downlink configuration style from a list of at least one uplink and downlink configuration style preconfigured in the preconfigured information of the user equipment according to the indicator included in the received edge connection uplink and downlink configuration information.
Further, according to the present invention, there is provided a method performed by a user equipment, comprising: receiving edge connection uplink and downlink configuration information from a sending user equipment different from the user equipment, wherein the edge connection uplink and downlink configuration information comprises at least one uplink and downlink configuration style, and the uplink and downlink configuration style comprises: a configuration period and/or the number of edge connection resources or the number of uplink time slots in the configuration period; and determining the available resources of the edge connection according to the received uplink and downlink configuration information of the edge connection.
Further, according to the present invention, there is provided a method performed by a user equipment, comprising: receiving edge connection uplink and downlink configuration information from a sending user equipment different from the user equipment, wherein the edge connection uplink and downlink configuration information comprises at least one uplink and downlink configuration style, and the uplink and downlink configuration style comprises: a configuration period, and/or an offset value within at least one configuration period; and determining the available resources of the edge connection according to the received uplink and downlink configuration information of the edge connection.
Further, according to the present invention, there is provided a method performed by a user equipment, comprising: receiving edge connection system information from a sending user equipment different from the user equipment, wherein the edge connection system information comprises first indication information, second indication information, a reference subcarrier interval, a configuration period of a first uplink and downlink configuration pattern, a configuration period of a second uplink and downlink configuration pattern and/or a direct frame number; and determining an edge connection resource offset value or an edge connection resource time slot number of the first uplink and downlink configuration pattern and/or the second uplink and downlink configuration pattern 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, the configuration period of the second uplink and downlink configuration pattern, and/or the direct frame number included in the received edge connection system information.
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.
Further, according to the present invention, there is provided a method performed by a user equipment, comprising: receiving edge connection system information from a sending user equipment different from the user equipment, wherein the edge connection system information comprises first indication information, second indication information, a reference subcarrier interval, a configuration period of a first uplink and downlink configuration pattern, a configuration period of a second uplink and downlink configuration pattern, a direct frame number, third indication information and/or a number indication of an edge connection synchronization system information block, and the third indication information indicates an actually sent edge connection synchronization system information block; and determining an edge connection resource deviant value or an edge connection resource time slot number of the first uplink and downlink configuration pattern and/or the second uplink and downlink configuration pattern 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, 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 edge connection synchronization system information block included in the received edge connection system information.
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.
Furthermore, according to the present invention, there is provided a user equipment comprising: a processor; and a memory storing instructions, wherein the instructions, when executed by the processor, perform the method described above.
According to the above aspect of the present invention, uplink and downlink configuration can be efficiently performed in communication by edge connection.
Drawings
The above and other features of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which:
fig. 1 is a diagram schematically illustrating Rel-15NR TDD configuration information in the existing 3GPP standard specification.
Fig. 2 is a flowchart illustrating a method performed by a user equipment according to a first embodiment of the present invention.
Fig. 3 is a flow chart illustrating a method performed by a user equipment according to a second embodiment of the present invention.
Fig. 4 is a flowchart illustrating a method performed by a user equipment according to a third embodiment of the present invention.
Fig. 5 is a flowchart illustrating a method performed by a user equipment according to a fourth embodiment of the present invention.
Fig. 6 is a block diagram illustrating a user equipment UE to which the present invention relates.
Detailed Description
The invention is described in detail below with reference to the figures and the detailed description. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, for the sake of brevity, detailed descriptions of well-known technologies not directly related to the present invention are omitted to prevent confusion of understanding of the present invention.
Embodiments according to the present invention are described in detail below with a 5G mobile communication system and its subsequent evolution as an example application environment. However, it is to be noted 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, and the like.
Some terms to which the present invention relates will be described below, and the terms to which the present invention relates are defined herein, unless otherwise specified. The terms given in the invention may adopt different naming manners in LTE, LTE-Advanced Pro, NR and the following communication systems, but the unified terms adopted in the invention can be replaced by the terms adopted in the corresponding systems when being applied to the specific systems.
3 GPP: 3rd Generation partnershift Project, third Generation Partnership Project
LTE: long Term 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 (pdcch)
UE: user Equipment, User Equipment
eNB: evolved NodeB, evolved node B
And g NB: 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
CSI: channel State Indicator, Channel State Indicator
HARQ: hybrid Automatic Repeat Request (HARQ)
CSI-RS: CSI-Reference Signal, channel State measurement Reference Signal
CRS: cell Reference Signal, 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 connection
SCI: edge 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 connected Shared Channel
FDM: frequency Division Multiplexing, Frequency Division Multiplexing
RRC: radio Resource Control, Radio Resource Control
RSRP: reference Signal Receiving Power, Reference Signal Receiving Power
SRS: sounding Reference Signal
DMRS: demodulation Reference Signal
CRC: cyclic Redundancy Check (crc)
PSDCH: physical Sidelink Discovery Channel
PSBCH: physical Sidelink Broadcast Channel, Physical edge connected Broadcast Channel
SFI: slot Format Indication
TDD: time Division Duplexing
FDD: frequency Division Duplexing
SIB 1: system Information Block Type 1, System Information Block Type 1
SLSS: edge join synchronization Signal
PSSS: primary Sidelink Synchronization Signal, edge-connected Primary Synchronization Signal
SSSS: secondary Sidelink Synchronization Signal, edge-connected Secondary Synchronization Signal
PCI: physical Cell ID, Physical Cell identity
PSS: primary Synchronization Signal, Primary Synchronization Signal
SSS: secondary Synchronization Signal, Secondary Synchronization Signal
BWP: bandwidth Part, BandWidth fragment/portion
GNSS: global Navigation Satellite positioning System (GNSS)
The following is a description of the prior art associated with the inventive arrangements. Unless otherwise specified, the meanings of the same terms in the specific examples are the same as those in the prior art.
It is worth noting that V2X referred to in the present invention has the same meaning as sildelink. V2X herein may also represent sildelink; similarly, sildelink herein may also represent V2X, and is not specifically distinguished or limited hereinafter.
The uplink and downlink configuration information and the TDD configuration information related in the present invention have the same meaning. The uplink and downlink configuration information and the TDD configuration information in this document may be replaced equivalently. Similarly, the sidelink uplink and downlink configuration information and the sidelink TDD configuration information may be replaced by the same, and both of them have the same meaning.
The TDD configuration information and sidelink TDD configuration information involved in the embodiments of the present invention include at least one TDD configuration pattern. The TDD configuration pattern includes corresponding configuration information, such as a configuration period, a reference subcarrier interval, and the like.
In the description of the present invention, an uplink resource may refer to a sidelink resource, and the sidelink resource may represent an uplink resource. Similarly, the uplink slot resource corresponds to a sidelink slot resource, and the uplink symbol resource corresponds to a sidelink symbol resource.
Indication and determination method of NR TDD configuration information
The NR base station gNB configures the TDD configuration information of the cell level through TDD-UL-DL-ConfigCommon in SIB1, which includes:
reference subcarrier spacing μref；
The high-level parameters patterrnl (the information element is optional and represents TDD configuration style 1, the same below), which include the following high-level parameters:
■ configuration period P (ms);
■ number of downstream time slots dslotsThe downlink time slot only contains downlink OFDM symbols (which can be called DL-only time slot);
■ number of downlink OFDM symbols dsym；
■ number u of upstream time slotsslotsIn the uplink time slot, onlyAn uplink OFDM symbol (which may be referred to as a UL-only slot);
■ number u of uplink OFDM symbolssym。
The period of the configuration information is P ms, corresponding to continuous
And a time slot. Fig. 1 shows the detailed meaning of the various high-level parameters contained in pattern 1. In S time slots, d is firstslotsA downlink time slot uslotsThe uplink slots are located at the end of the S slots. dsymAfter a downlink OFDM symbol is located in a downlink time slot, usymOne uplink OFDM symbol is located before the uplink time slot, and the rest
Each OFDM symbol is an X symbol (X denotes a flexible symbol). The X symbol may be a downlink symbol, an uplink symbol, or a guard interval symbol between downlink and uplink in different application scenarios. Wherein, for normal CP (normal CP),
for extended cp (extended cp),
the TDD-UL-DL-ConfigCommon in SIB1 may contain a higher layer parameter pattern2 (this information element is Optional and indicates TDD configuration pattern2, the same below). The pattern2 and the pattern1 have the same configuration information (the parameters of the pattern2 include the periods P2, dslots，2，uslots，2，dsym，2，usym，2) The corresponding parameters are the same as the corresponding patternls. Reference subcarrier spacing murefIs the same as pattern1, so the reference subcarrier spacing μ is not repeatedly configured for pattern2ref. The period of the configuration information is P2ms, corresponding to continuous
And a time slot. In thatIn S2 time slots, d is firstslots，2A downlink time slot uslots，2The uplink time slots are located at the end of the S2 time slots. dsym，2After a downlink OFDM symbol is located in a downlink time slot, usym，2One uplink OFDM symbol is located before the uplink time slot, and the rest
Each OFDM symbol is an X symbol (X denotes a flexible symbol). The X symbol may be a downlink symbol, an uplink symbol, or a guard interval symbol between downlink and uplink in different application scenarios. Wherein, for normal CP (normal CP),
for extended cp (extended cp),
when the TDD-UL-DL-ConfigCommon includes both patterns 2, the TDD configuration information has a configuration period of (P + P2) ms, which includes the above-mentioned S and S2 time slots (S2 in time domain).
The periods P and P2 in the configuration information satisfy the following conditions:
1) p is a divisor of 20, i.e. P can be divided by 20, and the first time domain symbol of every 20/P periods is the first symbol of an even frame;
2) p + P2 is a divisor of 20, i.e., P + P2 is divisible by 20, while it is required that the first time domain symbol every 20/(P + P2) cycles is the first symbol of an even frame.
Preferable ranges 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, as represented by IE: dl-UL-Transmission permission-v 1530. When the base station configures dl-UL-Transmission permission-v 1530 in pattern1/2, the UE ignores the dl-UL-Transmission permission corresponding to pattern 1/2.
NR SSB
The cell search means a process in which the UE acquires cell time synchronization and frequency synchronization, and a process in which the UE acquires a cell ID (PCI, physical cell identity) of the cell. In Rel-15NR, the UE performs a cell search procedure by receiving a synchronization signal. The synchronization signals include a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).
In Rel-15NR, the PSS, SSS, PBCH together form an SS/PBCH block, referred to as SSB for short, i.e., a synchronization system information block. The PSS and SSS carry the PCI of a cell together, and the PBCH carries the Master Information Block (MIB) of the cell. Hereinafter, SSB is used to denote a synchronous system information block. The SSB occupies 4 consecutive symbols in the time domain and 240 consecutive subcarriers in the frequency domain. The specific embodiment of the present invention is only related to the time domain structure of the SSB, and therefore, the frequency domain resource and structure of the SSB are not described in detail.
SSB supports subcarrier spacing SCS 15kHz, 30kHz, 120kHz, 240 kHz. On the same segment of frequency domain resources (i.e. a certain continuous segment of 240 subcarriers), the base station periodically transmits SSBs, and all SSBs in each period are referred to as an SSB burst. The SSB bursts are all temporally centered within a window of 5ms duration (SSB 5ms window). In NR, the maximum SSB number in the SSB 5ms window is denoted as L, and the following requirements should be satisfied:
1) l is 4, carrier frequency is less than or equal to 3G
2) L is 8, 3G < carrier frequency is less than or equal to 6G
3) L is 64, carrier frequency >6G
All SSBs within the SSB 5ms window are numbered, for example, with carrier frequency >6G, with SSB numbers (ssbinder) of 0-63, which are carried by the PBCH (6 bits total).
TS38.213 defines a total of 5 SSB time domain mapping modes, which are denoted as Case a, B, C, D, and E. Numbering the first symbol of the first slot of the 5ms window as symbol 0(index ═ 0), where the 5 mapping manners specifically include:
1) case a (SSB SCS 15 kHz): the first symbol number of each SSB in the SSB burst is denoted as {2, 8} +14 x n; wherein if the carrier frequency is less than or equal to 3G, n is 0, 1; if 3G <
If the carrier frequency is less than or equal to 6G, n is 0, 1, 2, 3;
2) case B (SSB SCS ═ 30 kHz): the first symbol number of each SSB in the SSB burst is denoted as {4, 8, 16, 20} +28 x n; wherein if the carrier frequency is less than or equal to 3G, n is 0; if the carrier frequency is less than or equal to 6G and is less than or equal to 3G, n is 0 and 1;
3) case C (SSB SCS ═ 30 kHz): the first symbol number of each SSB in the SSB burst is denoted as {2, 8} +14 x n; wherein if the carrier frequency is less than or equal to 3G, n is 0, 1; if 3G <
If the carrier frequency is less than or equal to 6G, n is 0, 1, 2, 3;
4) case D (SSB SCS 120 kHz): the first symbol number of each SSB in the SSB burst is denoted as {4, 8, 16, 20} +28 x n; where, for a carrier frequency >6G, n is 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18;
5) case E (SSB SCS 240 kHz): the first symbol number of each SSB in the SSB burst is denoted as {8, 12, 16, 20, 32, 36, 40, 44} +56 x n; where, for carrier frequency >6G, n is 0, 1, 2, 3, 5, 6, 7, 8.
The above correspondence between SSB mapping and carrier frequency refers to the following table:
table 5.4.3.3-1: SS raster entries applicable per operating band (FR1)
Table 5.4.3.3-2: SS raster entries applicable per operating band (FR2)
FR1 and FR2 in the above table indicate two carrier Frequency ranges (Frequency Range), corresponding to the following:
table 5.1-1: definition of frequency ranges
| Frequency range designation | Corresponding frequency range |
| FR1 | 450MHz-6000MHz |
| FR2 | 24250MHz-52600MHz |
When the UE searches the cell, the corresponding SSB subcarrier spacing and the SSB mapping mode can be determined according to the carrier frequency of the UE. By receiving and decoding the PBCH, the UE can determine the SSB number and the half frame indication, and further determine the downlink timing relationship (DL timing) of the cell in an SSB mapping manner.
Indication that NR actually sends SSB
The NR base station gNB indicates the SSB actually sent in the SSB burst by SIB1 or SSB-positioninburst in ServingCellConfigCommon. The specific indication mode is as follows:
1) for L-4, the carrier frequency ≦ 3G, represented using a 4-bit bitmap, each bit corresponding to one SSB in the SSB burst. The bit setting 1 indicates that the base station sends a corresponding SSB; setting 0 to indicate that the base station does not send the corresponding SSB;
2) for L-8, 3G < carrier frequency ≦ 6G, an 8-bit bitmap representation is used, with each bit corresponding to one SSB in the SSB burst. The bit setting 1 indicates that the base station sends a corresponding SSB; setting 0 to indicate that the base station does not send the corresponding SSB;
3) for L-64, carrier frequency >6G, expressed in 8 bits (inoneegroup) +8 bits (groupPresence). Each bit of the group Presence is set to be 1 to indicate that the corresponding group exists, and set to be 0 to indicate that the corresponding group does not exist; each bit of the inoneegroup is set to be 1, which means that the base station sends a corresponding SSB in the group corresponding to the group Presence set to be 1 bit; setting 0 indicates that the base station does not send corresponding SSB in the group corresponding to the groupPresence setting 1 bit; all 8 SSBs in the group corresponding to the grouppinse setting 0bit indicate no SSB sent.
If any one or more symbols of the PUSCH, PUCCH and PRACH are overlapped with the symbols actually sent to the SSB, the UE does not send the PUSCH, PUCCH and PRACH; the UE does not send the SRS in the time slot where the SSB is actually sent; and the UE assumes that the symbols actually transmitting the SSB are not configured as uplink symbols in TDD-UL-DL-configuration common, and TDD-UL-DL-configuration determined.
Scenarios for Sidelink communications
1) Out-of-Coverage (Out-of-Coverage): neither UE performing the sildenk communication has network coverage (e.g., the UE does not detect any cells satisfying the "cell selection criteria" on the frequency on which the sildenk communication is desired).
2) Network Coverage (In-Coverage): both UEs conducting the sildenk communication have network coverage (e.g., the UE detects at least one cell that satisfies the "cell selection criteria" on the frequency on which the sildenk communication is desired).
3) Partial-network overlay (Partial-Coverage): one of the UEs performing the Sidelink communication has no network coverage, and the other UE has network coverage.
From the UE side, the UE has only two scenarios, namely, network coverage and non-network coverage. Partial 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 the design of its physical layer channel structure is also similar to LTE uplink.
In LTE, a Sidelink synchronization signal (SLSS) is defined for frequency and time synchronization between two UEs performing the Sidelink communication, and particularly, when at least one of the UEs has no network coverage, one UE acquires the SLSS synchronization signal transmitted by the other UE. The SLSS contains primary synchronization signals PSSS and secondary synchronization signals SSSS, which can carry SLSS ID, the same principle as PCI in LTE and NR cellular communications is carried by both primary synchronization signals (LTE/NR PSS) and secondary synchronization signals (LTE/NR SSS).
LTE sildelink also defines a PSBCH for broadcasting sildelink-related system information (system information), wherein,
1) the time-frequency resources used by the PSBCH occupy 72 subcarriers in the center of the sildelink carrier in the frequency domain and one subframe for the PSBCH in the time domain, but excluding the REs used for the DMRS reference signal and the SLSS synchronization signal.
2) The system information related to Sidelink transmitted on PSBCH can be MIB-SL-V2X (MasterInformationBlock-SL-V2X for the Master information Block of V2X), which includes:
■, the configuration of the transmission Bandwidth, expressed by the parameter sl-Bandwidth, takes values of {6, 15, 25, 50, 75, 100} RBs.
■ TDD UL/UL Configuration information, using 8 cases of parameter TDD-configSL. none indicates that the Sildelink carrier sending the MIB is FDD, 0 indicates TDD UL/DL Configuration 0, 1 indicates TDD UL/DL Configuration 1, and so on.
■ DFN (direct frame number) used for transmitting SLSS and PSBCH is represented by parameter direct FrameNumber, and the value is 0-1023.
■ DSFN (direct subframe number) used for transmitting SLSS and PSBCH is represented by parameter direct subframe number, and the value is 0-9.
■ has a network coverage mark indicating whether the UE transmitting the MIB-SL-V2X has LTE network coverage, when the usage parameter coverage is TRUE, the LTE network coverage is present, and when the usage parameter is FALSE, the LTE network coverage is absent.
Rel-14/15 LTE V2X UE sending V2X MIB
When a V2X UE has data to transmit, the UE needs to send a V2X MIB together. The method and the process for determining each domain in the V2X MIB by the V2X UE are as follows:
1> on the frequency domain resources for performing the Sidelink communication, if the V2X UE is a UE with network coverage, then:
2, the UE places the coverage in TRUE;
2, the UE receives SIB2 broadcasted by the selected cell on the frequency domain resource, wherein the SIB2 contains ul-Bandwidth, and the UE determines sl-Bandwidth according to the value of the ul-Bandwidth;
2> if the cell broadcast message SIB1 contains tdd-Config:
3> the UE sets subframe assignment sl as a corresponding field (subframe assignment in tdd-Config) of tdd-Config included in the selected cell broadcast SIB 1;
2> otherwise:
3, the UE sets subframe assignment SL as none;
1> otherwise, if there is no cell coverage on the frequency domain resources for the Sidelink communication and v2 x-interfreqlnfolist in SIB21 of RRCConnectionReconfiguration or serving cell or primary cell contains the above frequency domain resources, then:
2, the UE places the coverage in TRUE;
2, the UE sets sl-Bandwidth as a value of a corresponding domain in v2 x-InterFreqInfoList;
2> the UE sets subframe assignment sl as a value of a corresponding field in the pre-configuration information (for example, v2x-comm configuration general);
otherwise, if there is no cell coverage on the frequency domain resources where the Sidelink communication is conducted, and the UE selects GNSS as the synchronization source, and sync o fetal indicator3 is not included in SL-V2X-reconfiguration:
2, the UE places the coverage in TRUE;
2> the UE sets sl-Bandwidth and subframe assignment SL as values of corresponding domains in the pre-configuration information (for example, v2 x-CommReconfiguration general);
1> otherwise, if the UE selects a synchronization source UE:
2, the UE places coverage in FALSE;
2, the UE sets SL-Bandwidth and subframe assignment SL as the values of the corresponding domain of the received MasterInformationBlock-SL-V2X;
1> otherwise:
2, the UE places coverage in FALSE;
2> the UE sets sl-Bandwidth and subframe assignment SL as values of corresponding domains in the pre-configuration information (for example, v2 x-CommReconfiguration general);
and 1, the UE determines the values of directFrameNumber and directSubFrameNumber according to the sub-frame for transmitting SLSS.
Description of sidelink resource threshold value/resource offset value/resource slot number
1) Sildenk resource threshold: the sidelink resource threshold may also be referred to as a sidelink resource threshold. The specific meaning of the sidelink resource threshold value related in the embodiment of the present invention represents the minimum sidelink resource number in one configuration period, or represents the minimum uplink resource number in one configuration period, and the unit of the number is a time slot or a symbol, that is, if the threshold value is uthresThe number of sidelink resources in a period of actual configuration or the number of uplink resources in a configuration period is not less than a threshold value uthres。
2) Sildenk resource offset value: the sidelink resource offset value represents an offset (offset) of an available sidelink resource or uplink resource with respect to a starting point in one configuration period. The unit of the Sidelink resource offset value is a slot or a symbol. For example, when μ is 0 (subcarrier spacing is 15kHz), the configuration period P is 5 ms: if the unit of the offset value of the sidelink resource is a timeslot and the offset is 2, the offset of the starting point of the configuration period corresponding to 5ms of the resource or uplink resource available for the sidelink is 2, that is, it means that the resource available for the sidelink is the third slot to the fifth slot within the 5ms period.
3) Sildelink resource slot number: all the time slots in one configuration period P are numbered by taking the time slot as a unit, and the number of each time slot is called a sidelink resource time slot number. Again, take μ ═ 0 (subcarrier spacing of 15kHz), configuration period P ═ 5ms as an example: the slot numbers within 5ms are #0, #1, #2, #3, #4 in this order. If the timeslot number of the sidelink resource is 2, it indicates that the timeslot numbers 2 to 4 are sidelink available resources or uplink resources. It is worth noting that there is a one-to-one correspondence between sidelink resource offset values and sidelink resource slot numbers.
In the embodiment of the present invention, the UE determining the sidelink resource offset value or the sidelink resource timeslot number may also indicate that the UE determines the number of timeslots or symbols of sidelink available resources in the configuration period.
[ example one ]
Fig. 2 is a flowchart illustrating a method performed by a user equipment according to a first embodiment of the present invention.
As shown in fig. 2, in a first embodiment of the present invention, the steps performed by the user equipment include:
in step 201, the ue receives system information transmitted from the gNB, where the system information includes TDD configuration information (uplink and downlink configuration information). The TDD configuration information includes a reference subcarrier spacing murefAnd/or threshold value u of uplink time slot (Sidelink time slot resource)thres. The TDD configuration information includes an indication u of the number of uplink timeslotsslots(by using NBSBit representation).
In step 203, the ue determines the number of available timeslot resources of the Sidelink according to the received TDD configuration information, and sends the Sidelink communication system information including the determined number of timeslot resources, where the Sidelink communication system information includes the Sidelink TDD configuration information. The Sidelink TDD configuration information includes N bits. Specific embodiments of the ue determining the value of the N-bit configuration information (denoted by nrofSLResources) include, but are not limited to:
1) if it is satisfied with
Suppose that
The number u of uplink slotsslotsThe correspondence with nrofSLResources and the specific definition method of nrofSLResources, which indicates the number of timeslot resources actually available for Sidelink, is shown in table 1.
TABLE 1 method for determining N-bit configuration information values
Wherein ceil () represents a ceiling function; floor () represents the floor function.
Alternatively, the first and second electrodes may be,
if it is not
Then nroflsresources is 2N-1, nroflsresources is defined as (2)N-1)×M。
2) Otherwise, the number u of uplink time slotsslotsAnd the two are equivalent to nroflsresources in one-to-one correspondence, namely equal to each other.
Alternatively, the second specific embodiment is as follows:
1) if it is satisfied with
Suppose that
The number u of uplink slotsslotsThe correspondence with nrofSLResources and the specific definition method of nrofSLResources, which indicates the number of timeslot resources actually available for Sidelink, is shown in table 2.
TABLE 2 method for determining N bit configuration information values
Wherein ceil () represents a ceiling function; floor () represents the floor function.
Alternatively, the first and second electrodes may be,
if it is not
Then
The definition is (2)N-1)×M+uthres。
2) Otherwise, nroflsresources ═ uslots-uthresNroflsresources is equal to uslots。
Alternatively, the third embodiment is as follows:
1) if N < N is satisfiedBSSuppose that
The number u of uplink slotsslotsTable 3 shows the correspondence between nrofSLResources and the specific definition method of nrofSLResources, which indicates the number of slot resources actually available to Sidelink.
TABLE 3 method for determining N-bit configuration information values
Where floor () represents a floor function.
2) Otherwise, the number u of uplink time slotsslotsAnd the two are equivalent to nroflsresources in one-to-one correspondence, namely equal to each other.
Optionally, in step 201 of the first embodiment of the present invention, the threshold value of the uplink timeslot (Sidelink timeslot resource) may be preconfigured in the provisioning information of the ue. Alternatively, the threshold value is determined by a predefined.
[ example two ]
Fig. 3 is a flow chart illustrating a method performed by a user equipment according to a second embodiment 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, a transmitting user equipment transmits Sidelink TDD configuration information to a receiving user equipment. The Sidelink TDD configuration information includes an indication field (indicator). The indication field indicates a number of one or more TDD configuration patterns.
In step 303, according to the indicator included in the received Sidelink TDD configuration information from the transmitting user equipment, a corresponding TDD configuration pattern is selected from a list of one or more TDD configuration patterns in the pre-configuration information of the receiving user equipment. The list of TDD configuration patterns includes one or more TDD configuration patterns.
Optionally, in step 303, according to the indicator included in the received Sidelink TDD configuration information from the transmitting user equipment, a corresponding TDD configuration pattern is selected from one or more predefined TDD configuration patterns. Alternatively, the corresponding TDD configuration pattern is selected from a predefined list of TDD configuration patterns. The TDD configuration pattern list includes one or more TDD configuration patterns.
Optionally, another specific implementation manner of this embodiment is that the sending user equipment sends the Sidelink TDD configuration information. The Sidelink TDD configuration information includes one or more configuration patterns. The configuration pattern comprises a configuration period and/or the number of Sidelink resources or uplink time slots in the configuration period, and the number of the Sidelink resources takes the time slots or symbols as a unit; or, the configuration pattern includes a configuration period and/or an offset value within the configuration period; or, the configuration pattern includes a configuration period and offset values in two configuration periods, and resources between two offset values in a configuration period represent available resources of the Sidelink. Specifically, if the two offset values are respectively recorded as offset 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 # slot 2.
[ third example ]
Fig. 4 is a flowchart illustrating a method performed by a user equipment according to a third embodiment 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 the Sidelink system information (uplink and downlink configuration information) to the receiving user equipment. The sildelink system information includes first indication information, second indication information, a reference subcarrier spacing μ, a configuration period P of a first TDD configuration pattern, a configuration period P2 of a second TDD configuration pattern, and/or a Direct Frame Number (DFN).
The first indication information comprises a time slot number indication or a symbol number indication of a Silelink synchronization system information block (S-SSB), and is represented as N; alternatively, the second indication information includes a slot number indication or a symbol number indication of the Sidelink synchronization system information block (S-SSB), which is denoted as N.
In step 403, the receiving user equipment receives the sildenk system information, and determines a sildenk resource offset value or a sildenk resource timeslot number of the first TDD configuration pattern and/or the second TDD configuration pattern according to the first indication information, the second indication information, the reference subcarrier spacing, 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 frame number included in the sildenk system information. Specific methods include, but are not limited to, the following:
1) if the DFN is even, then:
2) if it is not
N represents the Sidelink resource offset value or the Sidelink resource timeslot number of the first TDD configuration pattern;
2) otherwise, N represents the Sidelink resource offset value or the Sidelink resource timeslot number of the second TDD configuration pattern;
1) if the DFN is odd, then:
2) if it is not
N represents the Sidelink resource offset value or the Sidelink resource timeslot number of the first TDD configuration pattern;
2) otherwise, N represents the Sidelink resource offset value or the Sidelink resource slot number of the second TDD configuration pattern.
Where mod () represents a remainder operation.
Optionally, in step 401 of the third embodiment of the present invention, another specific implementation is that the sending user equipment sends the Sidelink system information to the receiving user equipment. The sildelink system information includes an indication information, a reference subcarrier spacing μ, a configuration period P of the first TDD configuration pattern, a configuration period P2 of the second TDD configuration pattern, and/or a Direct Frame Number (DFN).
And according to the time domain resource of the sidelink system information and/or a predefined S-SSB mapping mode, the receiving user equipment determines the time slot number of the sidelink synchronization system information block, wherein the time slot number is represented as N.
Optionally, corresponding to optional step 401 in the third embodiment, in step 403 in the third embodiment of the present invention, another specific embodiment is that the receiving user equipment receives the Sidelink system information, and determines, 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 included in the Sidelink system information, a Sidelink resource offset value or a Sidelink resource timeslot number of the first TDD configuration pattern and/or the second TDD configuration pattern. Specific methods include, but are not limited to, the following schemes.
1) If the DFN is even, then:
2) if it is not
N represents the Sidelink resource offset value or the Sidelink resource timeslot number of the first TDD configuration pattern;
2) otherwise, N represents the Sidelink resource offset value or the Sidelink resource timeslot number of the second TDD configuration pattern;
1) if the DFN is odd, then:
2) if it is not
N represents the Sidelink resource offset value or the Sidelink resource timeslot number of the first TDD configuration pattern;
2) otherwise, N represents the Sidelink resource offset value or the Sidelink resource slot number of the second TDD configuration pattern.
Where mod () represents a remainder operation.
[ example four ]
Fig. 5 is a flowchart illustrating a method performed by a user equipment according to a fourth embodiment 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, a sending user equipment sends a Sidelink system information to a receiving user equipment. The sildelink 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), one indication information (third indication information), and/or a numbered indication of the S-SSB. The third indication information represents an indication that the S-SSB is actually transmitted.
The first indication information includes a slot number indication or a symbol number indication, denoted as N, of a Sidelink synchronization system information block (S-SSB). Alternatively, the second indication information includes a slot number indication or a symbol number indication of the Sidelink synchronization system information block (S-SSB), which is denoted as N.
In step 503, the receiving user equipment receives the sildelink system information. And the receiving user equipment determines the time slot number or symbol number N' of a specific S-SSB actually transmitted by the transmitting user equipment in the S-SSB period according to the third indication information and/or the number indication of the S-SSB and/or the N. Wherein the specific S-SSB may be the first S-SSB or the last S-SSB actually transmitted by the transmitting user equipment in the S-SSB period. The present invention is not particularly limited thereto.
In step 505, the receiving user equipment determines a sildenk resource offset value or a sildenk resource timeslot number of the first TDD configuration pattern and/or the second TDD configuration pattern 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, 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 included in the sildenk system information. The specific method is as follows:
1) if the DFN is even, then:
2) if it is not
N' represents the Sidelink resource offset value or the Sidelink resource timeslot number of the first TDD configuration pattern;
2) otherwise, N' represents the Sidelink resource offset value or the Sidelink resource timeslot number of the second TDD configuration pattern;
1) if the DFN is odd, then:
2) if it is not
N' represents the Sidelink resource offset value or the Sidelink resource timeslot number of the first TDD configuration pattern;
2) otherwise, N' represents the Sidelink resource offset value or the Sidelink resource slot number of the second TDD configuration pattern.
Where mod () represents a remainder operation.
Optionally, in step 501 of the fourth embodiment of the present invention, another specific implementation is that the sending user equipment sends the Sidelink system information to the receiving user equipment. The sildelink system information includes first indication information, a reference subcarrier spacing μ, a configuration period P of a first TDD configuration pattern, a configuration period P2 of a second TDD configuration pattern, a Direct Frame Number (DFN), another indication information (second indication information), and/or a numbered indication of an S-SSB. The second indication information represents an indication that the S-SSB is actually transmitted.
And 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 mode, the receiving user equipment determines the time slot number of the received sidelink synchronization system information block, which is represented as N.
Optionally, corresponding to the optional step 501 of the fourth embodiment, in step 503 of the fourth embodiment of the present invention, according to N, and/or the second indication information, and/or a predefined S-SSB mapping manner, the receiving user equipment determines a timeslot number or a symbol number N' of a specific S-SSB actually sent by the sending user equipment in an S-SSB period. Wherein the specific S-SSB may be the first S-SSB or the last S-SSB actually transmitted by the transmitting user equipment in the S-SSB period. The present invention is not particularly limited thereto.
Optionally, corresponding to optional step 501 and optional step 503 of the fourth embodiment, in step 505 of the fourth embodiment of the present invention, another specific implementation is that the receiving user equipment determines, according to 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 number indication of the S-SSB, and the N and/or N', a sildenk resource offset value or a sildenk resource timeslot number of the first TDD configuration pattern and/or the second TDD configuration pattern, where 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, and the second indication information are included in the sildenk system information. The specific method is as follows:
1) if the DFN is even, then:
2) if it is not
N' represents the Sidelink resource offset value or the Sidelink resource timeslot number of the first TDD configuration pattern;
2) otherwise, N' represents the Sidelink resource offset value or the Sidelink resource timeslot number of the second TDD configuration pattern;
1) if the DFN is odd, then:
2) if it is not
N' represents the Sidelink resource offset value or the Sidelink resource timeslot number of the first TDD configuration pattern;
2) otherwise, N' represents the Sidelink resource offset value or the Sidelink resource slot number of the second TDD configuration pattern.
Where mod () represents a remainder operation.
Fig. 6 is a block diagram showing a 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, or the like. The memory 602 may include, for example, volatile memory (e.g., random access memory RAM), a Hard Disk Drive (HDD), non-volatile memory (e.g., flash memory), or other memory, among others. The memory 602 has stored thereon program instructions. Which when executed by the processor 601 may perform the above-described method performed by the user equipment as described in detail herein.
The method of the invention and the apparatus involved have been described above in connection with preferred embodiments. It will be appreciated by those skilled in the art that the above illustrated approaches are exemplary only, and that the various embodiments described above can be combined with each other without conflict. The method of the present invention is not limited to the steps or sequence shown above. The network nodes and user equipment shown above may comprise further modules, e.g. modules that may be developed or developed in the future, which may be available to a base station, MME, or UE, etc. The various identifiers shown above are exemplary only and not limiting, and the invention is not limited to the specific information elements that are examples of these identifiers. Many variations and modifications may occur to those skilled in the art in light of the teachings of the illustrated embodiments.
It should be understood that the above-described embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware. For example, various components within the base station and the user equipment in the above embodiments may be implemented by various means, including but not limited to: analog circuit devices, Digital Signal Processing (DSP) circuits, programmable processors, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), programmable logic devices (CPLDs), and the like.
In this application, a "base station" may refer to a mobile communication data and control switching center with a large transmission power and a wide coverage area, and includes functions of resource allocation scheduling, data receiving and transmitting, and the like. "user equipment" may refer to a user mobile terminal, including, for example, a mobile phone, a notebook, etc., which may wirelessly communicate with a base station or a micro base station.
Furthermore, embodiments of the invention disclosed herein may be implemented on a computer program product. More specifically, the computer program product is one of the following: there is a computer readable medium having computer program logic encoded thereon that, when executed on a computing device, provides related operations for implementing the above-described aspects of the present invention. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in embodiments of the present invention. Such arrangements of the invention are typically provided as downloadable software images, shared databases, etc. arranged or encoded in software, code and/or other data structures on a computer readable medium such as an optical medium (e.g., CD-ROM), floppy or hard disk or other medium such as firmware or microcode on one or more ROM or RAM or PROM chips or in one or more modules. The software or firmware or such configurations may be installed on a computing device to cause one or more processors in the computing device to perform the techniques described in embodiments of the present invention.
Further, each functional block or respective feature of the base station device and the terminal device used in each of the above embodiments may be implemented or executed by a circuit, which is typically one or more integrated circuits. Circuitry designed to perform the various functions described in this specification may include a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC) or a general purpose integrated circuit, a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine. The general-purpose processor or each circuit described above may be configured by a digital circuit, or may be configured by a logic circuit. Further, when advanced technology capable of replacing the current integrated circuit is developed due to the advancement of semiconductor technology, the present invention can also use the integrated circuit obtained by the advanced technology.
Although the present invention has been described in conjunction with the preferred embodiments thereof, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention. Accordingly, the present invention should not be limited by the above-described embodiments, but should be defined by the appended claims and their equivalents.
Claims (10)
1. A method performed by a user equipment, comprising:
receiving uplink and downlink configuration information from a base station, wherein the uplink and downlink configuration information comprises reference subcarrier intervals, uplink time slot number information and/or a threshold value of an uplink time slot; and
determining the number information of the available time slot resources of the edge connection according to the received uplink and downlink configuration information, and sending the uplink and downlink configuration information of the edge connection including the determined number information of the time slot resources,
wherein the determined bit number of the time slot resource number information is less than or equal to the bit number of the uplink time slot number information.
2. A method performed by a user equipment, comprising:
receiving uplink and downlink configuration information from a base station, wherein the uplink and downlink configuration information comprises reference subcarrier intervals and/or uplink time slot number information; and
determining the available time slot resource number information of the edge connection according to the received uplink and downlink configuration information and the threshold value of the uplink time slot preconfigured in the preconfigured information of the user equipment, and sending the edge connection uplink and downlink configuration information including the determined time slot resource number information,
wherein the determined bit number of the time slot resource number information is less than or equal to the bit number of the uplink time slot number information.
3. A method performed by a user equipment, comprising:
receiving edge connection uplink and downlink configuration information from a sending user equipment different from the user equipment, wherein the edge connection uplink and downlink configuration information comprises an indicator for indicating at least one uplink and downlink configuration style; and
and determining a corresponding uplink and downlink configuration style from a list of at least one uplink and downlink configuration style preconfigured in the preconfigured information of the user equipment according to the indicator included in the received edge connection uplink and downlink configuration information.
4. A method performed by a user equipment, comprising:
receiving edge connection uplink and downlink configuration information from a sending user equipment different from the user equipment, wherein the edge connection uplink and downlink configuration information comprises at least one uplink and downlink configuration style, and the uplink and downlink configuration style comprises: a configuration period and/or the number of edge connection resources or the number of uplink time slots in the configuration period; and
and determining the available resources of the edge connection according to the received uplink and downlink configuration information of the edge connection.
5. A method performed by a user equipment, comprising:
receiving edge connection uplink and downlink configuration information from a sending user equipment different from the user equipment, wherein the edge connection uplink and downlink configuration information comprises at least one uplink and downlink configuration style, and the uplink and downlink configuration style comprises: a configuration period, and/or an offset value within at least one configuration period; and
and determining the available resources of the edge connection according to the received uplink and downlink configuration information of the edge connection.
6. A method performed by a user equipment, comprising:
receiving edge connection system information from a sending user equipment different from the user equipment, wherein the edge connection system information comprises first indication information, second indication information, a reference subcarrier interval, a configuration period of a first uplink and downlink configuration pattern, a configuration period of a second uplink and downlink configuration pattern and/or a direct frame number; and
determining an edge connection resource deviant or an edge connection resource time slot number of the first uplink and downlink configuration pattern and/or the second uplink and downlink configuration pattern 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, the configuration period of the second uplink and downlink configuration pattern, and/or the direct frame number included in the received edge connection system information.
7. The method of claim 6,
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 a user equipment, comprising:
receiving edge connection system information from a sending user equipment different from the user equipment, wherein the edge connection system information comprises first indication information, second indication information, a reference subcarrier interval, a configuration period of a first uplink and downlink configuration pattern, a configuration period of a second uplink and downlink configuration pattern, a direct frame number, third indication information and/or a number indication of an edge connection synchronization system information block, and the third indication information indicates an actually sent edge connection synchronization system information block; and
determining an edge connection resource deviant value or an edge connection resource time slot number of the first uplink and downlink configuration pattern and/or the second uplink and downlink configuration pattern 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, 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 edge connection synchronization system information block included in the received edge connection system information.
9. The method of claim 8,
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, comprising:
a processor; and
a memory having stored therein instructions that, when executed,
wherein the instructions, when executed by the processor, perform the method of any of claims 1-9.
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| WO2021203879A1 (en) * | 2020-04-08 | 2021-10-14 | 大唐移动通信设备有限公司 | Methods for sending and receiving time division duplex configuration indication information, apparatus, and terminal |
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| CN105451211B (en) * | 2014-09-25 | 2019-12-27 | 中兴通讯股份有限公司 | Method and apparatus for device-to-device communication |
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2018
- 2018-12-24 CN CN201811586098.8A patent/CN111356237A/en active Pending
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2019
- 2019-12-23 WO PCT/CN2019/127375 patent/WO2020135320A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210099988A1 (en) * | 2019-09-27 | 2021-04-01 | Qualcomm Incorporated | Time division duplex (tdd) slot format configuration indication for sidelink communications |
| US11659552B2 (en) * | 2019-09-27 | 2023-05-23 | Qualcomm Incorporated | Time division duplex (TDD) slot format configuration indication for sidelink communications |
| WO2021203879A1 (en) * | 2020-04-08 | 2021-10-14 | 大唐移动通信设备有限公司 | Methods for sending and receiving time division duplex configuration indication information, apparatus, and terminal |
| WO2022033568A1 (en) * | 2020-08-14 | 2022-02-17 | 中兴通讯股份有限公司 | Information indication method and apparatus, device, and storage medium |
| WO2022228271A1 (en) * | 2021-04-25 | 2022-11-03 | 维沃移动通信有限公司 | Synchronization resource configuration method and apparatus, user equipment, and storage medium |
| WO2023035170A1 (en) * | 2021-09-09 | 2023-03-16 | Zte Corporation | Methods, devices, and systems for determining synchronization signal raster |
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| WO2020135320A1 (en) | 2020-07-02 |
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