WO2020192647A1 - 由用户设备执行的方法以及用户设备 - Google Patents
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- WO2020192647A1 WO2020192647A1 PCT/CN2020/080846 CN2020080846W WO2020192647A1 WO 2020192647 A1 WO2020192647 A1 WO 2020192647A1 CN 2020080846 W CN2020080846 W CN 2020080846W WO 2020192647 A1 WO2020192647 A1 WO 2020192647A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1864—ARQ related signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
- H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
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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
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
Definitions
- the present invention relates to the field of wireless communication technology, and in particular to methods executed by user equipment and corresponding user equipment.
- Non-Patent Document 1 a new research project on 5G technical standards (see Non-Patent Document 1) was approved.
- the purpose of this research project is to develop a new radio (New Radio: NR) access technology to meet all 5G application scenarios, requirements and deployment environments.
- NR mainly has three application scenarios: Enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (mMTC), and Ultra-Reliable and Low Latency Communications: URLLC) .
- eMBB Enhanced Mobile Broadband
- mMTC Massive Machine Type Communication
- URLLC Ultra-Reliable and Low Latency Communications
- the waveform supported by 5G in the downlink direction is CP-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing), and the waveforms supported in the uplink direction include CP-OFDM and DFT-s-OFDM (Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiplexing).
- Each waveform supports multiple combinations of subcarrier spacing (SCS) and cyclic prefix (CP) length. Sometimes, a given SCS or the combination of SCS and CP length is called a "numerology".
- SCS subcarrier spacing
- CP cyclic prefix
- the parameter set supported by 5G is shown in Table 1, which defines two CP types, "normal” and "extended”. Each SCS (indicated by ⁇ f, the unit is kHz) corresponds to a "SCS configuration" (indicated by ⁇ ).
- the length of a 5G radio frame (radio frame, or system frame, sometimes referred to as a frame, frame with a frame number ranging from 0 to 1023) is 10 milliseconds.
- Each frame contains 10 subframes with a length of 1 millisecond (subframe, the subframe number in the frame ranges from 0 to 9), and each subframe contains Slots (slot, the range of the slot number in the subframe is ), and each slot contains OFDM symbols.
- Table 2 shows the different SCS configurations with The value of. Obviously, the number of OFDM symbols in each subframe
- each frame is divided into two half-frames of the same size. The first half frame (half frame 0) contains subframes 0 to 4, and the second half frame (half frame 1) contains subframe 5. ⁇ 9.
- N 1 is related to the PDSCH processing capability of the UE.
- 5G defines two PDSCH processing capacity: PDSCH processing capacity and a processing capacity of 2 PDSCH, PDSCH processing capacity which corresponds to N 1 to determine the embodiment 1 in Table 3, corresponding to the PDSCH processing capacity N 2 is determined, see Embodiment 1 Table 4. among them,
- the "PDSCH decoding time" N 1 defined in Table 3 is also used as a time threshold related to PDSCH processing in other places.
- NT ,1 all represent the duration of N 1 symbols (in milliseconds), where N 1 corresponds to the PDSCH defined by UE processing capability 1 when additional PDSCH DM-RS is configured
- Decoding (or receiving) time where the "additional PDSCH DM-RS configured” can be considered equivalent to the DMRS-DownlinkConfig in any one of "dmrs-DownlinkForPDSCH-MappingTypeA and dmrs-DownlinkForPDSCH-MappingTypeB" in Table 3.
- Dmrs-AdditionalPosition is not equal to pos0, or the high-level parameter is not configured".
- the corresponding time for applying the uplink transmission timing adjustment starts from the start of the uplink time slot n+k+1, where among them,
- the higher layer may instruct the physical layer to transmit (or retransmit) the PRACH.
- UE transmission (or retransmission) of the PRACH time should be no later than the last symbol window N T, 1 + 0.75 ms after the last symbol of the received PDSCH or the N T, 1 +0.75 ms . among them,
- ⁇ determining N T, 1 corresponding to N 1 of SCS used when the PDSCH may be the SCS.
- the UE can assume the minimum time between the last symbol of the PDSCH carrying the RAR message (including RAR UL grant, RAR uplink grant) and the corresponding PUSCH transmission scheduled by the RAR uplink grant Equal to NT , 1 + NT , 2 + 0.75. among them,
- the SCS used when determining N 1 corresponding to NT, 1 and N 2 corresponding to NT, 2 may be the smaller of the SCS configured by the PDSCH and the PUSCH.
- the UE tries to detect that the DCI format 1_0 that scrambles the CRC with the TC-RNTI contains a UE conflict.
- the PDSCH of the contention resolution identity (at this time, it can also be said that the PDSCH carries Msg4).
- the UE After receiving the PDSCH, the UE transmits HARQ-ACK on the PUCCH on the valid uplink BWP where the PUSCH is located.
- the minimum time between the last symbol of the PDSCH and the first symbol of the PUCCH is equal to NT ,1 +0.75 milliseconds. among them,
- ⁇ determining N T, 1 corresponding to N 1 of SCS may be used when the receiver is in the RAR window PDSCH SCS.
- N T a value of 1, and N T
- V2X (Vehicle-to-everything) communication refers to the communication between a vehicle and any entity that may affect the vehicle.
- Typical V2X communication includes V2I (Vehicle-to-Infrastructure), V2N (Vehicle-to-network, vehicle-to-network), V2V (Vehicle-to-vehicle, vehicle-to-vehicle), V2P (Vehicle-to -Pedestrian, vehicle to pedestrian) etc.
- the 3GPP LTE standard supports V2V communication from Rel-14, and V2X communication from Rel-15.
- the interface between the UE and the UE used to realize D2D discovery and D2D communication is called PC5, and is also called “straight” or “sidelink” (SL) link at the physical layer. It distinguishes between uplink (UL) link and downlink (DL) link.
- 3GPP V2X phase 3 namely NR V2X
- NR V2X 3GPP V2X phase 3
- NR V2X research project a new research project on 3GPP NR V2X (see Non-Patent Document 3, hereinafter referred to as NR V2X research project, or V2X Phase 3 research project) was approved.
- One of the goals of the NR V2X research project is to study the design of a new SL interface based on 5G systems.
- the physical layer of the SL interface supports broadcast and groupcast in in-coverage, out-of-coverage and partial-coverage scenarios And unicast (unicast) transmission.
- NR V2X supports SL synchronization function.
- Related signals and channels include:
- ⁇ SL PSS Sidelink Primary Synchronization Signal, direct primary synchronization signal
- S-PSS S-PSS
- PSSS Primary Sidelink Synchronization Signal, primary direct synchronization signal
- ⁇ SL SSS Sidelink Secondary Synchronization Signal
- S-SSS S-SSS
- SSSS Secondary Sidelink Synchronization Signal, secondary direct synchronization signal
- ⁇ PSBCH Physical Sidelink Broadcast Channel, physical direct broadcast channel
- SL PSS, SL SSS, and PSBCH are organized into blocks on the time-frequency resource grid, called SL SSB (Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block), or S-SSB .
- the transmission bandwidth of the SL SSB is within the SL BWP (Sidelink Bandwidth Part) configured for the UE.
- SL PSS and/or SL SSS may carry SL SSID (Sidelink Synchronization Identity, or Sidelink Synchronization Signal Identity), and PSBCH may carry SL MIB (Sidelink Master Information Block).
- the synchronization source of NR V2X may include GNSS (Global Navigation Satellite System), gNB, eNB, and NR UE.
- GNSS Global Navigation Satellite System
- gNB Global Navigation Satellite System
- eNB eNode B
- NR UE NR UE.
- the priority definition of the synchronization source is shown in Table 5. Among them, the UE determines whether to use "GNSS-based synchronization” or "gNB/eNB-based synchronization" through (pre)configuration information.
- GNSS-based synchronization Synchronization based on gNB/eNB P0 GNSS gNB/eNB P1 All UEs directly synchronized to GNSS All UEs directly synchronized to gNB/eNB P2 All UEs indirectly synchronized to GNSS All UEs indirectly synchronized to gNB/eNB P3 Any other UE GNSS P4 N/A All UEs directly synchronized to GNSS P5 N/A All UEs indirectly synchronized to GNSS P6 N/A Any other UE
- an SL BWP (Sidelink Bandwidth Part) can be (pre-)configured on an NR V2X carrier.
- a coverage scenario there is only one valid (or activated) SL BWP on an NR V2X carrier.
- One SL BWP can be (pre-)configured with one or more resource pools (Resource Pool, which refers to a collection of time-frequency resources that can be used for SL transmission and/or reception).
- NR V2X The resource allocation methods of NR V2X can be classified as follows:
- ⁇ Mode 1 The base station schedules SL resources for SL transmission.
- Mode 2 The UE determines the SL resources for SL transmission (that is, the base station does not participate in the scheduling of SL resources). Mode 2 can be subdivided into the following situations:
- PDSCH processing capability 1 can also be referred to as UE processing capability 1.
- NR V2X Other channels involved in NR V2X include at least:
- ⁇ PSSCH Physical Sidelink Shared Channel, physical direct shared channel
- ⁇ PSCCH Physical Sidelink Control Channel, physical direct control channel
- ⁇ PSFCH Physical Sidelink Feedback Channel, physical direct feedback channel
- the UE schedules the transmission of data carried by the PSSCH through the SCI (Sidelink Control Information) carried by the PSCCH.
- SCI Servicelink Control Information
- SCI can include one or more of the following:
- Layer-1 Source ID (Layer-1 Source ID), or Physical Layer Source ID (Physical Layer Source ID).
- Layer-1 Destination ID (Layer-1 Destination ID), or Physical Layer Source ID.
- HARQ Process ID HARQ Process ID
- HARQ Process Number HARQ Process Number
- SL link design In NR V2X, the possible problems faced by SL link design include at least:
- the scrambling sequence between the SL channels sent by different UEs may conflict.
- ⁇ UE IDs determined by different UEs may conflict, resulting in failure to correctly identify the source and/or destination UE ID at the physical layer.
- Non-Patent Document 1 RP-160671, New SID Proposal: Study on New Radio Access Technology
- Non-Patent Document 2 RP-170855, New WID on New Radio Access Technology
- Non-Patent Document 3 RP-181429, New SID: Study on NR V2X
- one of the objectives of the present invention is to propose a method executed by a user equipment and a user equipment.
- the UE and the base station can Unambiguously determine the duration corresponding to the consistent PDSCH processing capability 1, so that the UE can adjust the uplink transmission timing in time, accurately determine the time to retransmit the random access preamble, and accurately determine the RAR uplink grant scheduling
- the time of PUSCH, or the transmission time of HARQ-ACK for the PDSCH including the UE conflict resolution identifier is accurately determined.
- a method executed by a user equipment includes: receiving a timing advance command in an uplink time slot n; and applying the uplink transmission timing according to the time when the timing advance command is received
- the adjusted time is determined as a step starting from the starting point of the uplink time slot n+k+1, where k is further determined according to the duration of N 1 symbols, and the value of N 1 corresponds to at least one of the following:
- the reference processing capability assumption holds When the physical downlink shared channel PDSCH processing capability 1 defines the PDSCH decoding time, the maximum PDSCH decoding time defined by the PDSCH processing capability 1, and the PDSCH processing capability 1 when the additional PDSCH demodulation reference signal DM-RS is configured The maximum PDSCH decoding time, the minimum PDSCH decoding time defined by PDSCH processing capability 1, and the minimum PDSCH decoding time defined by PDSCH processing capability 1 when additional PDSCH DM-RS is configured, where n, k, and N 1 are all
- the uplink time slot n is the last time slot of the uplink time slot that overlaps with one or more time slots for PDSCH reception.
- a method executed by a user equipment includes: the step of sending a random access preamble; and if the user equipment does not detect the random access in the random access response RAR window
- the radio network temporary identifier RA-RNTI scrambles the cyclic redundancy check CRC downlink control information DCI format 1_0, or the physical downlink share scheduled by the DCI format 1_0 is not received correctly in the RAR window
- the upper layer of the user equipment instructs the physical layer to retransmit the random access preamble, wherein the user equipment retransmits the random access preamble
- the time of is no later than the first time after the last symbol of the RAR window or the first time after the last symbol received by the PDSCH, the first time is determined according to the duration of N 1 symbols, N 1
- the value of corresponds to at least one of the following: the PDSCH
- a method executed by a user equipment including: receiving the RAR uplink grant contained in the random access response RAR message carried by the physical downlink shared channel PDSCH; and transmitting the received The step of the physical uplink shared channel PUSCH scheduled by the RAR uplink grant, wherein the minimum time between the last symbol received by the PDSCH and the first symbol transmitted by the PUSCH is based on the duration of N 1 symbols Time determination, the value of N 1 corresponds to at least one of the following: the PDSCH decoding time defined by the physical downlink shared channel PDSCH processing capability 1 when the reference processing capability assumption is established, the maximum PDSCH decoding time defined by the PDSCH processing capability 1, The maximum PDSCH decoding time defined by PDSCH processing capability 1 when additional PDSCH demodulation reference signal DM-RS is configured, the minimum PDSCH decoding time defined by PDSCH processing capability 1, and the PDSCH processing capability when additional PDSCH DM-RS is configured The minimum PDSCH decoding time defined by 1,
- a method executed by a user equipment includes: detecting that the DCI format 1_0 of the cyclic redundancy check CRC is scrambled with the temporary cell radio network temporary identification TC-RNTI, and receiving the DCI format 1_0 scheduling physical downlink shared channel PDSCH; and transmitting HARQ-ACK information for the PDSCH in the physical uplink control channel PUCCH, where the last symbol received by the PDSCH and the PUCCH transmitted
- the minimum time between the first symbol is determined according to the duration of N 1 symbols, and the value of N 1 corresponds to at least one of the following: defined by the physical downlink shared channel PDSCH processing capability 1 when the processing capability assumption holds PDSCH decoding time, the maximum PDSCH decoding time defined by PDSCH processing capability 1, the maximum PDSCH decoding time defined by PDSCH processing capability 1 when additional PDSCH demodulation reference signal DM-RS is configured, and the minimum PDSCH defined by PDSCH processing capability 1. Decoding time and the minimum
- the PDSCH includes a user equipment conflict resolution identifier
- the reference processing capability assumption includes one or more of the following:
- ⁇ DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeA is not configured
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeA is equal to "pos1"
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in dmrs-DownlinkForPDSCHMappingTypeA is equal to "pos3"
- ⁇ DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeB is not configured
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in dmrs-DownlinkForPDSCHMappingTypeB is equal to "pos1"
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeB is equal to "pos2"
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in dmrs-DownlinkForPDSCHMappingTypeB is equal to "pos3".
- the reference processing capability assumption includes one or more of the following:
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCH-MappingTypeA is configured as pos0;
- the dmrs-AdditionalPosition in the DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCH-MappingTypeB is configured as pos0.
- the reference processing capability hypothesis further includes one or more of the following:
- the PDSCH is scheduled by the downlink control information DCI format 1_0;
- ⁇ PDSCH is scheduled by DCI format 1_1;
- the user equipment is configured with PDSCH mapping type A;
- the user equipment is configured with PDSCH mapping type B;
- the demodulation reference signal DMRS of PDSCH is configured as a single symbol DM-RS
- the DMRS of PDSCH is configured as a dual-symbol DM-RS
- the duration l d in units of the number of symbols between the first orthogonal frequency division multiplexing OFDM symbol of the time slot where the PDSCH is located and the last OFDM symbol of the PDSCH is a value less than 13;
- the duration l d in units of the number of symbols between the first OFDM symbol of the PDSCH and the last OFDM symbol of the PDSCH is a value less than 13;
- a user equipment including: a processor; and a memory storing instructions; wherein the instructions execute the above-mentioned method when run by the processor.
- the UE and the base station can unambiguously determine the duration corresponding to the same PDSCH processing capability 1, so that the UE can perform uplink transmission in time Timing adjustment, accurately determining the time to retransmit the random access preamble, accurately determining the time of the PUSCH scheduled by the RAR uplink grant, or accurately determining the HARQ-ACK transmission time for the PDSCH containing the UE conflict resolution identifier.
- Fig. 1 is a flowchart showing a method executed by a user equipment according to the first embodiment of the present invention.
- Fig. 2 is a flowchart showing a method executed by a user equipment according to the second embodiment of the present invention.
- Fig. 3 is a flowchart showing a method executed by a user equipment according to the third embodiment of the present invention.
- Fig. 4 is a flowchart showing a method executed by a user equipment according to the fourth embodiment of the present invention.
- Fig. 5 is a flowchart showing a method executed by a user equipment according to the fifth embodiment of the present invention.
- Fig. 6 is a flowchart showing a method executed by a user equipment according to the sixth embodiment of the present invention.
- Fig. 7 is a block diagram schematically showing a user equipment involved in the present invention.
- 3GPP 3rd Generation Partnership Project
- the third generation partnership project the third generation partnership project
- BWP Bandwidth Part, Bandwidth Part
- CA Carrier Aggregation, carrier aggregation
- CP Cyclic Prefix, cyclic prefix
- CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing, Cyclic Prefix Orthogonal Frequency Division Multiplexing
- C-RNTI Cell RNTI, temporary identification of cell wireless network
- DFT-s-OFDM Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing, Discrete Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiplexing
- DL-SCH Downlink Shared Channel, downlink shared channel
- DM-RS Demodulation reference signal, demodulation reference signal
- eMBB Enhanced Mobile Broadband, enhanced mobile broadband communications
- HARQ-ACK HARQ Acknowledgement, hybrid automatic repeat request confirmation
- LCID Logical Channel ID, logical channel identifier
- LTE-A Long Term Evolution-Advanced, an upgraded version of long-term evolution technology
- MAC Medium Access Control, medium access control
- MAC CE MAC Control Element, MAC control element
- MCG Master Cell Group, primary cell group
- mMTC Massive Machine Type Communication, large-scale machine type communication
- NUL Normal Uplink, normal uplink
- OFDM Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing
- PDSCH Physical Downlink Shared Channel, physical downlink shared channel
- PRACH Physical Random Access Channel, physical random access channel
- PSBCH Physical Sidelink Broadcast Channel, physical direct broadcast channel
- PSCCH Physical Sidelink Control Channel, physical direct control channel
- PSFCH Physical Sidelink Feedback Channel, physical direct feedback channel
- PSSCH Physical Sidelink Shared Channel, physical direct shared channel
- PSS Primary Synchronization Signal, the primary synchronization signal
- PSSS Primary Sidelink Synchronization Signal, main straight line synchronization signal
- PTAG Primary Timing Advance Group, the main timing advance group
- PUSCH Physical uplink shared channel, physical uplink shared channel
- RAR Random Access Response, Random Access Response
- RB Resource Block, resource block
- Radio Network Temporary Identifier Radio Network Temporary Identifier, wireless network temporary identifier
- RRC Radio Resource Control, radio resource control
- SCG Secondary Cell Group, secondary cell group
- SCI Sidelink Control Information, direct control information
- SCS Subcarrier Spacing, subcarrier spacing
- SFN System Frame Number, system frame number
- SIB System Information Block, system information block
- SL BWP Sidelink Bandwidth Part, straight bandwidth segment
- SL PSS Sidelink Primary Synchronization Signal, direct main synchronization signal
- SL SSB Sidelink SS/PBCH block, direct synchronization signal/physical broadcast channel block
- SL SSS Sidelink Secondary Synchronization Signal, direct-travel secondary synchronization signal
- SpCell Special Cell, special cell
- SSB SS/PBCH block, synchronization signal/physical broadcast channel block
- SSS Secondary Synchronization Signal, secondary synchronization signal
- SSSS Secondary Sidelink Synchronization Signal, secondary direct synchronization signal
- Timing Advance Timing Advance
- TAG Timing Advanced Group, timing advance group
- TC-RNTI Temporary C-RNTI, temporary cell wireless network temporary identification
- TDD Time Division Duplexing, time division duplex
- UE User Equipment, user equipment
- V2I Vehicle-to-Infrastructure, vehicle to infrastructure
- V2N Vehicle-to-network, vehicle-to-network
- V2P Vehicle-to-Pedestrian, vehicle to pedestrian
- V2V Vehicle-to-vehicle, vehicle to vehicle
- V2X Vehicle-to-everything, vehicle to any entity
- the initial effective uplink BWP (initial active UL BWP) can also be referred to as the initial uplink BWP (initial UL BWP), which can be configured through the high-level parameter initialuplinkBWP, for example.
- the initial valid downlink BWP (initial active DL BWP) can also be called the initial downlink BWP (initial DL BWP), which can be configured through the high-level parameter initialDownlinkBWP, for example.
- Fig. 1 is a flowchart showing a method executed by a user equipment according to the first embodiment of the present invention.
- the steps performed by the user equipment UE include: step S101 and step S103.
- step S101 a timing advance command is received in the uplink time slot n. among them,
- the uplink time slot n may be the last time slot of the uplink time slot that overlaps with one or more time slots for PDSCH reception.
- the PDSCH may be a PDSCH that provides timing advance commands.
- T TA 0, where T TA is the value of uplink transmission timing adjustment, and the unit is seconds.
- the SCS used may be the minimum value of the SCS used by all uplink BWPs configured in all uplink carriers configured in the TAG indicated by the timing advance command.
- step S103 according to the time when the timing advance command is received, and/or other information related to the uplink transmission timing adjustment, the time for applying the uplink transmission timing adjustment is determined to start from the beginning of the time slot n+k+1 . among them,
- ⁇ N T, 1 represents the duration of N 1 symbols (in milliseconds).
- ⁇ N T, 2 represents the duration of N 2 symbols (in milliseconds), where N 2 can correspond to the PUSCH preparation time corresponding to PUSCH timing capability 1 (PUSCH timing capability 1). among them,
- PUSCH timing capability 1 may also be referred to as UE processing capability 1.
- ⁇ N TA, max refers to the maximum timing advance value (in milliseconds).
- the SCS used when determining N 1 and N 2 can be the smallest SCS in the following:
- the SCS used when determining N 1 and N 2 can also be defined in other ways.
- the SCS used when determining N TA and max can be the smallest SCS in the following:
- the SCS used when determining N TA and max can also be defined in other ways.
- all uplink BWPs configured in a given uplink carrier may or may not include the initial effective uplink BWP.
- all downlink BWPs configured in a given downlink carrier may include or may not include the initial valid downlink BWP.
- N 1 may correspond to the PDSCH decoding time (PDSCH decoding time) defined by the PDSCH processing capability 1 (PDSCH processing capability 1) when the reference processing capability assumption is established. ), it can also correspond to the maximum PDSCH decoding time defined by PDSCH processing capability 1, or it can correspond to the maximum PDSCH decoding time defined by PDSCH processing capability 1 when additional PDSCH DM-RS is configured, or it can correspond to the definition of PDSCH processing capability 1.
- the minimum PDSCH decoding time can also correspond to the minimum PDSCH decoding time defined by PDSCH processing capability 1 when additional PDSCH DM-RS is configured. among them,
- PDSCH processing capability 1 can also be referred to as UE processing capability 1.
- the PDSCH decoding time can also be called the PDSCH reception time.
- the PDSCH decoding time may be a PDSCH decoding time corresponding to a certain SCS (for example, 15 kHz, another example, 30 kHz, another example 60 kHz, another example, 120 kHz).
- SCS for example, 15 kHz, another example, 30 kHz, another example 60 kHz, another example, 120 kHz.
- the PDSCH decoding time may also be the PDSCH decoding time corresponding to all SCS.
- the maximum PDSCH decoding time defined by PDSCH processing capability 1 when additional PDSCH DM-RS is configured can be the maximum PDSCH decoding time defined by PDSCH processing capability 1 for all SCS when additional PDSCH DM-RS is configured. Maximum value.
- the reference processing capacity hypothesis can be one or more of the following (any combination of "and” or “or” when applicable):
- the UE is configured with additional PDSCH and DM-RS. For example, one or more of the following (in any combination of "and” or “or” when applicable):
- the high-level parameter dmrs-DownlinkForPDSCHMappingTypeA is not configured.
- ⁇ DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeA is not configured.
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeA is not "pos0".
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeA is equal to "pos1".
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeA is equal to "pos2".
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeA is equal to "pos3".
- the high-level parameter dmrs-DownlinkForPDSCHMappingTypeB is not configured.
- ⁇ DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeB is not configured.
- the dmrs-AdditionalPosition in the DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeB is not configured.
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in dmrs-DownlinkForPDSCHMappingTypeB is not "pos0".
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeB is equal to "pos1".
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCHMappingTypeB is equal to "pos2".
- dmrs-AdditionalPosition in DMRS-DownlinkConfig in dmrs-DownlinkForPDSCHMappingTypeB is equal to "pos3".
- the UE is not configured with additional PDSCH and DM-RS.
- additional PDSCH and DM-RS For example, one or more of the following (in any combination of "and” or “or” when applicable):
- the dmrs-AdditionalPosition in DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCH-MappingTypeA is configured as pos0.
- the dmrs-AdditionalPosition in the DMRS-DownlinkConfig in the high-level parameter dmrs-DownlinkForPDSCH-MappingTypeB is configured as pos0.
- ⁇ PDSCH is scheduled by DCI format 1_0.
- ⁇ PDSCH is scheduled by DCI format 1_1.
- the UE is configured with PDSCH mapping type A.
- the UE is configured with PDSCH mapping type B.
- the DMRS of PDSCH is configured as single-symbol DM-RS.
- the DMRS of PDSCH is configured as double-symbol DM-RS.
- the duration (in the number of symbols) l d between the first OFDM symbol of the time slot where the PDSCH is located and the last OFDM symbol of the PDSCH is a value less than 13.
- the duration (in the number of symbols) l d between the first OFDM symbol of the PDSCH and the last OFDM symbol of the PDSCH is a value less than 13.
- ⁇ Position l 1 11 of the second DM-RS symbol of PDSCH.
- the present invention provides a method to improve the definition of the reference processing capability assumption when determining the PDSCH processing capability 1, so that the UE and the base station can unambiguously determine the corresponding PDSCH processing capability 1 This allows the UE to adjust the uplink transmission timing in time, ensuring that the UE’s uplink transmission timing error is maintained within a reasonable range.
- Fig. 2 is a flowchart showing a method executed by a user equipment according to the second embodiment of the present invention.
- the steps performed by the user equipment UE include: step S201 and step S203.
- a random access preamble (random access preamble, sometimes also referred to as sending a physical random access channel, Physical Random Access Channel, PRACH) is sent.
- the transmission of the random access preamble can be triggered by a higher layer, can also be triggered by a PDCCH order (PDCCH order), or can be triggered by other methods.
- PDCCH order PDCCH order
- step S203 the DCI format 1_0 in which the CRC is scrambled with RA-RNTI is detected in the RAR (Random Access Response) window.
- RAR Random Access Response
- the UE detects the DCI format 1_0 and the corresponding PDSCH (that is, the PDSCH scheduled by the DCI format 1_0) in the RAR window, and the higher layer of the UE recognizes the PDSCH
- the RAPID Random Access Preamble Identity
- the transport block carried in the transport block. For example, if the RAPID is consistent with the index of the random access preamble sent by the UE in step S201, then the higher layer of the UE sends the physical The layer indicates the RAR uplink grant (UL grant) carried in the transport block.
- the UE may indicate the physical layer transmission (Or retransmission) random access preamble.
- the UE transmits the random access preamble should be no later than the time the RAR window, 1 + 0.75 ms after the last symbol of the received PDSCH or the N T, 1 millisecond +0.75 . among them,
- ⁇ N T, 1 represents the duration of N 1 symbols (in milliseconds).
- the method for determining the value of N 1 is the same as that of the first embodiment described above, so the detailed description is omitted.
- the present invention provides a method to improve the definition of the reference processing capability assumption when determining the PDSCH processing capability 1, so that the UE and the base station can unambiguously determine the corresponding PDSCH processing capability 1
- the duration of time allows the UE to accurately determine the time to retransmit the random access preamble, ensuring the correct completion of the random access process.
- Fig. 3 is a flowchart showing a method executed by a user equipment according to the third embodiment of the present invention.
- the steps performed by the user equipment UE include: step S301 and step S303.
- the RAR uplink authorization is received.
- the RAR uplink authorization may be included in a MAC RAR
- the MAC RAR may be included in a MAC PDU
- the MAC PDU may be carried by a PDSCH.
- the PDSCH carries a "RAR message" (RAR message), and the RAR message contains the RAR uplink grant.
- step S303 the PUSCH scheduled by the received RAR uplink grant is transmitted.
- the UE may assume that the minimum time between the last symbol of the PDSCH reception (PDSCH reception) and the first symbol of the PUSCH transmission is equal to NT , 1 + NT , 2 + 0.75.
- ⁇ N T, 1 represents the duration of N 1 symbols (in milliseconds).
- ⁇ N T, 2 represents the duration of N 2 symbols (in milliseconds), where N 2 corresponds to the PUSCH preparation time corresponding to PUSCH timing capability 1 (PUSCH timing capability 1). among them,
- PUSCH timing capability 1 can also be referred to as UE processing capability 1.
- the SCS used when determining N 1 and N 2 may be the smaller of the SCS configured by the PDSCH and the PUSCH, or the SCS determined in other ways.
- the method for determining the value of N 1 is the same as that of the first embodiment described above, so the detailed description is omitted.
- the present invention provides a method to improve the definition of the reference processing capability assumption when determining the PDSCH processing capability 1, so that the UE and the base station can unambiguously determine the corresponding PDSCH processing capability 1 This allows the UE to accurately determine the time of the PUSCH scheduled by the RAR uplink grant, which ensures the correct completion of the random access process.
- Fig. 4 is a flowchart showing a method executed by a user equipment according to the fourth embodiment of the present invention.
- the steps performed by the user equipment UE include: step S401 and step S403.
- step S401 the DCI format 1_0 with the CRC scrambled with TC-RNTI (Temporary C-RNTI) is detected, and the PDSCH scheduled by the DCI format 1_0 is received. among them,
- the PDSCH may include a UE contention resolution identity.
- the PDSCH can be used to respond to the PUSCH transmission scheduled by the RAR uplink grant.
- step S403 HARQ-ACK information is transmitted in the PUCCH. among them,
- the HARQ-ACK information may be used to respond to the PDSCH.
- the PUCCH and the PUSCH may be in the same effective uplink BWP.
- the minimum time between the last symbol received by the PDSCH and the first symbol transmitted by the PUCCH is equal to NT , 1 + 0.5 milliseconds. among them,
- ⁇ N T, 1 represents the duration of N 1 symbols (in milliseconds).
- the fourth embodiment of the present invention is only executed when the UE is not provided with a C-RNTI.
- the fourth embodiment of the present invention is only executed when the UE is not in the RRC_CONNECTED mode.
- the method for determining the value of N 1 is the same as that of the first embodiment described above, so the detailed description is omitted.
- the present invention provides a method to improve the definition of the reference processing capability assumption when determining the PDSCH processing capability 1, so that the UE and the base station can unambiguously determine the corresponding PDSCH processing capability 1 This allows the UE to accurately determine the transmission time of the HARQ-ACK for the PDSCH containing the UE conflict resolution identifier, ensuring the correct completion of the random access process.
- Fig. 5 is a flowchart showing a method executed by a user equipment according to the fifth embodiment of the present invention.
- the steps performed by the user equipment UE include: step S501 and step S503.
- step S501 the indication information related to the scrambling of the SL channel is obtained.
- the indication information related to the scrambling of the SL channel can come from predefined information, can also come from the pre-configuration information of the UE, can also come from the default configuration information of the UE, or can come from the base station (For example, gNB, or eNB), it can also come from other UEs, or a combination of the above methods.
- predefined information can also come from the pre-configuration information of the UE, can also come from the default configuration information of the UE, or can come from the base station (For example, gNB, or eNB), it can also come from other UEs, or a combination of the above methods.
- the indication information related to the scrambling of the SL channel may be included in an RRC message or a PC5RRC message (for example, MIB, or SIB, or SL MIB, or pre-configuration information, or default configuration information , Such as other RRC messages, and other PC5RRC messages), it can also be included in MAC CE, it can also be included in downlink control information (DCI), it can also be included in direct control information (SCI), or it can be A combination of the above methods.
- RRC message or a PC5RRC message for example, MIB, or SIB, or SL MIB, or pre-configuration information, or default configuration information .
- DCI downlink control information
- SCI direct control information
- the indication information related to the scrambling of the SL channel can pass through a protocol layer of the UE (for example, the RRC layer, the NAS layer, the V2X layer, the application layer, and the physical layer.
- a protocol layer of the UE for example, the RRC layer, the NAS layer, the V2X layer, the application layer, and the physical layer.
- RRC layer, or NAS Layers such as V2X layer, application layer, physical layer, MAC sublayer, RLC sublayer, PDCP sublayer, SDAP sublayer, and other protocol layers, where applicable Case
- the SL channel can be a channel related to SL synchronization, or a channel related to SL communication, or other channels transmitted on the SL carrier.
- the channel may be PSBCH, PSCCH, PSSCH, PSFCH, or other SL channels.
- the indication information related to the scrambling of the SL channel may include one or more of the following:
- ⁇ UE ID (denoted as ). among them,
- the UE ID may be a physical layer UE ID (or layer 1 UE ID, layer-1 UE ID), or a higher layer UE ID.
- the higher layer (or upper layer) may refer to a protocol layer or protocol sublayer above the physical layer (excluding the physical layer), for example, the MAC sublayer, the RLC sublayer, and the PDCP sublayer ,
- the SDAP sublayer another example is the RRC layer
- another example is the NAS layer
- another example is the V2X layer
- another example is the application layer.
- the UE ID may refer to the UE ID used by a specific protocol layer or protocol sublayer, or may refer to the UE ID used by multiple protocol layers or protocol sublayers.
- the UE ID may be a layer 2 UE ID, and the layer 2 UE ID may be used by one or more of the MAC sublayer, RLC sublayer, PDCP sublayer, and SDAP sublayer.
- the UE ID may be an integer.
- a 4-bit integer such as a 6-bit integer, an 8-bit integer, a 10-bit integer, a 12-bit integer, a 14-bit integer, and a 16-bit integer.
- 18-bit integer such as 20-bit integer, 22-bit integer, 24-bit integer, 26-bit integer, 28-bit integer, 30-bit integer, 32
- An integer of bits such as 34-bit integers, 36-bit integers, 38-bit integers, 40-bit integers, 42-bit integers, 44-bit integers, and 46-bits
- the integer of is like 48-bit integer, like 50-bit integer, like 52-bit integer, like 54-bit integer, like 56-bit integer, like 58-bit integer, like 60-bit Integers are like 62-bit integers or 64-bit integers.
- the UE ID may be a source UE ID used to identify a source (source) UE or a target UE ID used to identify a destination (destination) UE in SL transmission.
- the UE ID can be used to identify a UE or a group of UEs (including one or more UEs); when the UE ID is used to identify a group of UEs, it can also be used
- the UE ID is called a group ID (group ID) or a UE group ID (UE group ID).
- group ID group ID
- UE group ID UE group ID
- the source UE ID may be called a source group ID or a source UE group ID
- the target UE ID may be called Target group ID or target UE group ID.
- the UE ID when referring to the UE ID, it can refer to a part of the UE ID (such as 8 least significant bits, or 8 most significant bits, or 16 least significant bits, or 16 highest The integer corresponding to the valid bit) may also refer to the integer corresponding to all the bits of the UE ID.
- the UE ID may be configured for one or more of unicast, groupcast, and broadcast.
- the UE ID can be configured separately for one or more of PSBCH, PSCCH, PSSCH, and PSFCH.
- the UE ID can be based on different resource allocation modes used by the SL channel (for example, mode 1, that is, the base station schedules SL resources for the UE's SL transmission; another example is mode 2, that is, the UE determines to use
- mode 1 that is, the base station schedules SL resources for the UE's SL transmission
- mode 2 that is, the UE determines to use
- the SL resources of the SL transmission of the UE are configured respectively.
- ⁇ SL synchronization ID (sidelink synchronization identity, denoted as ).
- the SL synchronization ID may also be called SLSS ID, or SL-SSID, or V2X SSID.
- the SL synchronization ID may be an ID carried in the SL PSS and/or SL SSS.
- the value range set of the SL synchronization ID can be ⁇ 0, 1,..., 83 ⁇ , or ⁇ 0, 1,..., 167 ⁇ , or ⁇ 0, 1,...,251 ⁇ , it can also be ⁇ 0,1,...,335 ⁇ , it can be ⁇ 0,1,...,419 ⁇ , it can also be ⁇ 0,1,...
- ,503 ⁇ it can also be ⁇ 0,1,...,587 ⁇ , it can also be ⁇ 0,1,...,671 ⁇ , it can also be ⁇ 0,1,...,755 ⁇ , also It can be ⁇ 0,1,...,839 ⁇ , it can be ⁇ 0,1,...,923 ⁇ , it can be ⁇ 0,1,...,1007 ⁇ , it can also be ⁇ 0, 1,...,1091 ⁇ , can also be other integer sets.
- step S503 the scrambling sequence of the SL channel is determined according to the indication information related to the scrambling of the SL channel and/or other information.
- the scrambling sequence may be a pseudo-random sequence (pseudo-random sequence).
- pseudo-random sequence c(n) can be defined as follows:
- x 1 (n+31) (x 1 (n+3)+x 1 (n))mod 2
- x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod 2
- c init can be A function of A function of with A function of.
- c init can be defined in any of the following ways:
- M can be ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 ⁇
- N can be ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 , 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 ⁇ one of the values, "
- the fifth embodiment of the present invention uses a special scrambling ID when initializing the scrambling sequence of the SL channel, at least partially avoiding the conflict of the scrambling sequence between the SL channels sent by different UEs, thereby greatly The possible mutual interference between different SL channels is reduced.
- the use of a longer ID to scramble the SL channel also greatly reduces or even completely avoids the inability to correctly identify the source and/or destination UE at the physical layer due to potential collisions of short IDs (such as physical layer IDs). ID and other issues.
- Fig. 6 is a flowchart showing a method executed by a user equipment according to the sixth embodiment of the present invention.
- the steps performed by the user equipment UE include: step S601 and step S603.
- step S601 the indication information related to SL synchronization (synchronization) is obtained.
- the indication information related to SL synchronization can come from predefined information, or from pre-configuration information of the UE, or from the default configuration information of the UE, or from a base station (such as gNB , Another example is eNB), it can also come from other UEs, or a combination of the above methods.
- the indication information related to SL synchronization may be included in an RRC message or a PC5RRC message (for example, MIB, or SIB, or SL MIB, or preconfiguration information, or default configuration information, or Other RRC messages, such as other PC5RRC messages), can also be included in the MAC CE, can also be included in the downlink control information (DCI), can also be included in the direct control information (SCI), or in the above manner combination.
- DCI downlink control information
- SCI direct control information
- the indication information related to SL synchronization can pass through a protocol layer of the UE (for example, the RRC layer, the NAS layer, the V2X layer, the application layer, the physical layer, and the The MAC sub-layer, such as the RLC sub-layer, the PDCP sub-layer, the SDAP sub-layer, and the other protocol layers, if applicable, to another protocol layer (such as the RRC layer, or the NAS layer).
- a protocol layer of the UE for example, the RRC layer, the NAS layer, the V2X layer, the application layer, the physical layer, the MAC sublayer, the RLC sublayer, the PDCP sublayer, the SDAP sublayer, and the other protocol layers, where applicable) Instructions.
- the indication information related to SL synchronization may include one or more of the following:
- the SL synchronization mode can be classified according to the main synchronization source of the SL (synchronization source, also referred to as synchronization reference).
- the SL synchronization manner may include synchronization based on GNSS and synchronization based on gNB/eNB.
- the base station synchronizes to the GNSS information. among them,
- the base station can be a gNB, an eNB, or other base stations.
- the information that the base station synchronizes to the GNSS may indicate the information that one or more base stations synchronize to the GNSS.
- the information that each base station is synchronized to GNSS can be obtained from multiple base stations.
- the "information of base station synchronization to GNSS" may include one or more of the following:
- the base station is synchronized to GNSS. For example, the base station has been synchronized to GNSS, or the base station has directly synchronized to GNSS, or the base station has indirectly synchronized to GNSS, or the base station is not synchronized to GNSS.
- GNSS Global Positioning System
- GLONASS Globalbal Navigation Satellite System, Global Navigation Satellite System
- BeiDou Beidou Navigation Satellite System
- Galileo Galileo Navigation Satellite System
- QZSS Quadrature Navigation Satellite System
- whether the base station is synchronized to the GNSS can be implicitly determined according to the type of GNSS synchronized by the base station (for example, an empty GNSS type indicates that it is not synchronized to the GNSS).
- the offset between the SFN of the base station and the Direct Frame Number (DFN) on the SL link is also like the offset between the DFN on the SL link and the SFN of the base station.
- DFN Direct Frame Number
- the subframe may be a subframe numbered within the frame, or a globally numbered time slot (for example, all subframes within an SFN period are numbered).
- ⁇ Slot offset For example, the offset between the time slot of the base station and the time slot on the SL link, and the offset between the time slot on the SL link and the time slot of the base station.
- the time slot can be a time slot numbered in a subframe, a time slot numbered in a frame, or a globally numbered time slot (for example, the time slots in all SFNs in one SFN cycle are Numbering).
- the offset between the OFDM symbol of the base station and the OFDM symbol on the SL link is also like the offset between the OFDM symbol on the SL link and the OFDM symbol of the base station.
- the OFDM symbol may be an OFDM symbol numbered in a time slot, an OFDM symbol numbered in a subframe, an OFDM symbol numbered in a frame, or a globally numbered OFDM symbol (for example, Number all OFDM symbols in SFN within one SFN period).
- step S603 the corresponding relationship between the synchronization source and the priority is determined according to the indication information related to the SL synchronization and/or other information. For example, determining the synchronization source corresponding to each priority is another example of determining the priority corresponding to each synchronization source.
- the synchronization source may be a synchronization source that is actually detected, or may be a synchronization source that is not detected, or both.
- each priority can include one or more synchronization sources.
- the priority can be recorded as P0, P1, P2, P3, P4, P5, P6, ... from high to low.
- the corresponding relationship between the synchronization source and the priority may be related to the "information for the base station to synchronize to the GNSS".
- the corresponding base station can be used as a synchronization source (for example, priority is P0, and For example, the priority is P1, the priority is P2, the priority is P3, the priority is P4, the priority is P5, and the priority is P6).
- the priority of the base station can be equal to GNSS or less than GNSS; in addition, the priority of the base station can be greater than all UEs directly synchronized to GNSS, or equal to all UEs directly synchronized to GNSS, or less than All UEs directly synchronized to GNSS; in addition, the priority of the base station may be greater than all UEs that indirectly synchronized to GNSS, or equal to all UEs that indirectly synchronized to GNSS, or may be less than all UEs that indirectly synchronized to GNSS.
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all UEs directly synchronized to GNSS
- P2 corresponds to all UEs indirectly synchronized to GNSS
- P3 corresponds to any other UE.
- ⁇ P0 corresponds to GNSS and all gNB/eNB synchronized to GNSS
- P1 corresponds to all UEs directly synchronized to GNSS
- P2 corresponds to all UEs synchronized to GNSS indirectly
- P3 corresponds to any other UE.
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all gNB/eNBs synchronized to GNSS and all UEs directly synchronized to GNSS
- P2 corresponds to all UEs indirectly synchronized to GNSS
- P3 corresponds to any other UE.
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all gNB/eNBs synchronized to GNSS
- P2 corresponds to all UEs directly synchronized to GNSS
- P3 corresponds to all UEs synchronized to GNSS indirectly
- P4 corresponds to any other UE.
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all UEs that are directly synchronized to GNSS
- P2 corresponds to all gNB/eNBs that are synchronized to GNSS
- P3 corresponds to all UEs that are indirectly synchronized to GNSS
- P4 corresponds to any other UE.
- ⁇ P0 corresponds to GNSS and all gNB/eNB directly synchronized to GNSS
- P1 corresponds to all gNB/eNB indirectly synchronized to GNSS and all UEs directly synchronized to GNSS
- P2 corresponds to all UEs indirectly synchronized to GNSS
- P3 corresponds to any other UE .
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all gNB/eNB directly synchronized to GNSS and all UEs directly synchronized to GNSS
- P2 corresponds to all gNB/eNB indirectly synchronized to GNSS and all UEs indirectly synchronized to GNSS
- P3 corresponds to any other UE .
- ⁇ P0 corresponds to GNSS and all gNB/eNBs that are directly synchronized to GNSS
- P1 corresponds to all gNB/eNBs that are indirectly synchronized to GNSS
- P2 corresponds to all UEs that are directly synchronized to GNSS
- P3 corresponds to all UEs that are indirectly synchronized to GNSS
- P4 corresponds to any Other UEs.
- ⁇ P0 corresponds to GNSS and all gNB/eNBs that are directly synchronized to GNSS
- P1 corresponds to all UEs that are directly synchronized to GNSS
- P2 corresponds to all gNB/eNBs that are indirectly synchronized to GNSS
- P3 corresponds to all UEs that are indirectly synchronized to GNSS
- P4 corresponds to any Other UEs.
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all gNB/eNB directly synchronized to GNSS
- P2 corresponds to all gNB/eNB indirectly synchronized to GNSS and all UEs directly synchronized to GNSS
- P3 corresponds to all UEs indirectly synchronized to GNSS
- P4 corresponds to any Other UEs.
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all gNB/eNB directly synchronized to GNSS
- P2 corresponds to all gNB/eNB indirectly synchronized to GNSS
- P3 corresponds to all UEs directly synchronized to GNSS
- P4 corresponds to all UEs indirectly synchronized to GNSS
- P5 Correspond to any other UE.
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all gNB/eNBs that directly synchronize to GNSS
- P2 corresponds to all UEs that directly synchronize to GNSS
- P3 corresponds to all gNB/eNBs that indirectly synchronize to GNSS
- P4 corresponds to all UEs that indirectly synchronize to GNSS
- P5 Correspond to any other UE.
- ⁇ P0 corresponds to GNSS
- P1 corresponds to all UEs that directly synchronize to GNSS
- P2 corresponds to all gNB/eNBs that directly synchronize to GNSS
- P3 corresponds to all gNB/eNBs that indirectly synchronize to GNSS
- P4 corresponds to all UEs that indirectly synchronize to GNSS
- P5 Correspond to any other UE.
- ⁇ P0 corresponds to gNB/eNB
- P1 corresponds to all UEs directly synchronized to gNB/eNB
- P2 corresponds to all UEs indirectly synchronized to gNB/eNB
- P3 corresponds to GNSS
- P4 corresponds to all UEs directly synchronized to GNSS
- P5 corresponds to all indirect synchronization To GNSS UE
- P6 corresponds to any other UE.
- the probability that the UE selects the high priority synchronization source in such synchronization is greatly enhanced, and the The performance of SL synchronization in NR V2X.
- FIG. 7 is used to describe a user equipment that can execute the method executed by the user equipment described in detail above in the present invention as a modification.
- Fig. 7 is a block diagram showing a user equipment UE related to the present invention.
- the user equipment UE70 includes a processor 701 and a memory 702.
- the processor 701 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like.
- the memory 702 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 memories.
- the memory 702 stores program instructions. When the instruction is executed by the processor 701, it can execute the above-mentioned method executed by the user equipment described in detail in the present invention.
- the method and related equipment of the present invention 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 various embodiments described above can be combined with each other without conflict.
- the method of the present invention is not limited to the steps and sequence shown above.
- the network nodes and user equipment shown above may include more modules, for example, may also include modules that can be developed or developed in the future and can be used for base stations, MMEs, or UEs, and so on.
- the various identifiers shown above are only exemplary rather than restrictive, and the present invention is not limited to specific information elements as examples of these identifiers. Those skilled in the art can make many changes and modifications based on the teaching of the illustrated embodiment.
- the foregoing embodiments of the present invention can be implemented by software, hardware, or a combination of both software and hardware.
- the various components inside the base station and user equipment in the above embodiment 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.
- DSP digital signal processing
- ASIC application specific integrated circuit
- FPGA field programmable gate array
- CPLD programmable logic device
- base station may refer to a mobile communication data and control switching center with larger transmission power and wider coverage area, including functions such as resource allocation and scheduling, data reception and transmission.
- User equipment may refer to a user's mobile terminal, for example, including mobile phones, notebooks, and other terminal devices that can communicate with base stations or micro base stations wirelessly.
- the embodiments of the present invention disclosed herein can be implemented on a computer program product.
- the computer program product is a product that has a computer-readable medium on which computer program logic is encoded, and when executed on a computing device, the computer program logic provides related operations to implement The above technical scheme of the present invention.
- the computer program logic 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.
- This arrangement of the present 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 (such as CD-ROM), a floppy disk or a hard disk, or as one or more Firmware or microcode on a ROM or RAM or PROM chip, or downloadable software images, shared databases, etc. in one or more modules.
- Software or firmware or such a configuration can be installed on a computing device, so that one or more processors in the computing device can execute the technical solutions described in the embodiments of the present invention.
- each functional module or each feature of the base station device and the 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 the functions described in this specification can include general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC) or general-purpose integrated circuits, field programmable gate arrays (FPGA), or other Programming logic devices, discrete gates or transistor logic, or discrete hardware components, or any combination of the above devices.
- the 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.
- the present invention can also use integrated circuits obtained by using this advanced technology.
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Abstract
一种由用户设备执行的方法,包括:在上行时隙n接收定时提前命令的步骤;以及根据接收定时提前命令的时间,将应用上行传输定时调整的时间确定为从上行时隙n+k+1的起点开始的步骤,其中,k进一步根据N 1个符号的持续时间确定,N 1的值对应于以下至少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,n、k和N 1均为整数。
Description
本发明涉及无线通信技术领域,具体涉及由用户设备执行的方法以及相应的用户设备。
2016年3月,在第三代合作伙伴计划(3rd Generation Partnership Project:3GPP)RAN#71次全会上,一个关于5G技术标准的新的研究项目(参见非专利文献1)获得批准。该研究项目的目的是开发一个新的无线(New Radio:NR)接入技术以满足5G的所有应用场景、需求和部署环境。NR主要有三个应用场景:增强的移动宽带通信(Enhanced Mobile Broadband:eMBB)、大规模机器类通信(massive Machine Type Communication:mMTC)和超可靠低延迟通信(Ultra-Reliable and Low Latency Communications:URLLC)。2017年6月,在第三代合作伙伴计划(3rd Generation Partnership Project:3GPP)RAN#75次全会上,相应的5G NR的工作项目(参见非专利文献2)获得批准。
5G在下行方向支持的波形(waveform)是CP-OFDM(Cyclic Prefix Orthogonal Frequency Division Multiplexing,循环前缀正交频分复用),在上行方向支持的波形包括CP-OFDM和DFT-s-OFDM(Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing,离散傅里叶变换扩频正交频分复用)。每一种波形都支持多种子载波间隔(subcarrier spacing,SCS)和循环前缀(cyclic prefix,CP)长度的组合。有时候,将一个给定的SCS、或者SCS和CP长度的组合称为一个“参数集”(numerology)。5G支持的参数集如表1所示,其中定义了“正常”和“扩展”两种CP类型。每一个SCS(以Δf表示,单位是kHz)都对应一个“SCS配置”(以μ表示)。
表1 5G支持的参数集
| μ | Δf=2 μ·15[kHz] | 循环前缀(Cyclic prefix) |
| 0 | 15 | 正常(Normal) |
| 1 | 30 | 正常 |
| 2 | 60 | 正常,扩展(Extended) |
| 3 | 120 | 正常 |
| 4 | 240 | 正常 |
5G的基本时间单位为T
c=1/(Δf
max·N
f)秒,其中Δf
max=480·10
3赫兹,N
f=4096。常数κ=T
s/T
c=64,其中T
s是LTE的基本时间单位,T
s=1/(Δf
ref·N
f,ref)秒,Δf
ref=15·10
3赫兹,N
f,ref=2048。
在时域,5G的无线帧(radio frame,或者称为系统帧,system frame,有时简称为帧,frame,帧号范围为0~1023)的长度是10毫秒。每个帧包含10个1毫秒长度的子帧(subframe,在帧内的子帧号范围为0~9),每个子帧包含
个时隙(slot,在子帧内的时隙号范围为
),而每个时隙包含
个OFDM符号。表2显示了不同的SCS配置下的
和
的取值。显然,每个子帧内的OFDM符号的个数
另外,每个帧又分成两个同等大小的半帧(half-frame),其中前一个半帧(半帧0)包含子帧0~4,后一个半帧(半帧1)包含子帧5~9。
表2和SCS配置μ相关的时域参数
5G基站可以使用PDSCH进行下行数据的传输,而相应地UE可以使用上行的PUCCH发送对所述下行数据的HARQ-ACK。由于UE需要一定的时间对所接收的PDSCH进行解调和解码等操作,所述HARQ-ACK的起始发送时间不早于符号L
1,其中L
1是在所述PDSCH的最后一个符号 的末尾之后再经过T
proc,1=(N
1+d
1,1)(2048+144)·κ2
-μ·T
c后的下一个完整的上行符号(即所述上行符号的CP起始于所述PDSCH的最后一个符号的末尾之后再经过T
proc,1后)。
在上述关于T
proc,1的公式中,N
1的取值和UE的PDSCH处理能力有关。5G中定义了两种PDSCH处理能力:PDSCH处理能力1和PDSCH处理能力2,其中对应于PDSCH处理能力1的确定N
1的方式见表3,对应于PDSCH处理能力2的确定N
1的方式见表4。其中,
●若所述PDSCH使用PDSCH映射类型A,且PDSCH的DMRS配置为单符号(single-symbol)DM-RS,且高层参数dmrs-AdditionalPosition配置为pos1,且所述PDSCH所在的时隙的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的持续时间(记为l
d,单位为符号个数)等于13或者14,则所述PDSCH的第二个DM-RS符号的位置l
1可以等于11,也可以等于12,取决于其他系统配置参数。当l
1=12时,表3中的N
1,0=14。
●在所有其他情况下,N
1,0=13。
表3为PDSCH处理能力1定义的PDSCH处理时间
表4为PDSCH处理能力2定义的PDSCH处理时间
除了上面提到的用于定义针对PDSCH的HARQ-ACK的发送时间的门限外,表3中定义的“PDSCH解码时间”N
1还在其他地方中被用作与PDSCH处理有关的时间门限。例如,在下面四种情况中,N
T,1都表示N
1个符号的持续时间(单位为毫秒),其中N
1对应配置了额外的PDSCH DM-RS时的UE处理能力1所定义的PDSCH解码(或者说接收)时间,其中,所述“配置了额外的PDSCH DM-RS”可以认为等同于表3中“dmrs-DownlinkForPDSCH-MappingTypeA和dmrs-DownlinkForPDSCH-MappingTypeB的任意一个中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition都不等于pos0,或者所述高层参数未配置”。
◆确定N
T,1所对应的N
1时所使用的SCS是下面中最小的SCS:
○所述定时提前命令所指示的TAG中配置的所有上行载波中配置的所有上行BWP所使用的SCS。
○所述所有上行载波所对应的下行载波中配置的所有下行BWP所使用的SCS。
●在随机接入(random access)过程中,如果UE在发送了PRACH后,在RAR窗口中没有检测到CRC用RA-RNTI加扰的DCI格式1_0,或者在RAR窗口中没有正确接收到相应的PDSCH中的传输块,或者高层没有识别与来自UE的PRACH传输所关联的RAPID,则高层可以指示物理层传输(或者说重传)PRACH。此时,UE传输(或者说重传)PRACH的时间应该不迟于所述 窗口的最后一个符号后N
T,1+0.75毫秒或者所述PDSCH接收的最后一个符号后N
T,1+0.75毫秒。其中,
◆确定N
T,1所对应的N
1时所使用的SCS可以是所述PDSCH的SCS。
●在随机接入过程中,UE可以假设携带RAR消息(其中包含RAR UL grant,RAR上行授权)的PDSCH的最后一个符号和相应的由所述RAR上行授权所调度的PUSCH传输之间的最小时间等于N
T,1+N
T,2+0.75。其中,
◆确定N
T,1所对应的N
1和N
T,2所对应的N
2时所使用的SCS可以是所述PDSCH和所述PUSCH所配置的SCS中较小的一个。
●在UE未被提供C-RNTI时,在随机接入过程中,在传输RAR上行授权所调度的PUSCH后,UE尝试检测用TC-RNTI加扰CRC的DCI格式1_0所调度的包含了UE冲突解决标识(contention resolution identity)的PDSCH(此时又可以称所述PDSCH携带了Msg4)。在收到所述PDSCH后,UE在所述PUSCH所在的有效上行BWP上的PUCCH上传输HARQ-ACK。所述PDSCH的最后一个符号和所述PUCCH的第一个符号之间的最小时间等于N
T,1+0.75毫秒。其中,
◆确定N
T,1所对应的N
1时所使用的SCS可以是所述在RAR窗口中接收的PDSCH的SCS。
在现有的3GPP关于5G的标准规范中,和传输定时调整有关的机制至少存在如下问题:
●在确定应用上行传输定时调整的时间、重传PRACH的时间、传输由RAR上行授权所调度的PUSCH的时间、传输针对Msg4的PUCCH的时间时,需要确定配置了额外的PDSCH DM-RS时的N
T,1的值,而N
T,1的值又取决于表3中定义的“PDSCH解码时间”N
1的值,而在μ=0时,由于N
1的值(N
1,0)取决于PDSCH的第二个DM-RS符号的位置是否表示为l
1以及l
1的取值,所以现有的 3GPP关于5G的标准规范中的描述“N
T,1表示N
1个符号的持续时间,其中N
1对应配置了额外的PDSCH DM-RS时的UE处理能力1所定义的PDSCH解码时间”存在歧义,UE和基站无法据此唯一确定N
1的值。
另外,V2X(Vehicle-to-everything)通信是指车辆(vehicle)和任何可能影响车辆的实体之间的通信。典型的V2X通信包括V2I(Vehicle-to-Infrastructure,车辆到基础设施)、V2N(Vehicle-to-network,车辆到网络)、V2V(Vehicle-to-vehicle,车辆到车辆)、V2P(Vehicle-to-Pedestrian,车辆到行人)等。
3GPP的LTE标准中从Rel-14开始支持V2V通信,从Rel-15开始支持V2X通信。在3GPP标准规范中,用于实现D2D发现和D2D通信的UE和UE间的接口称为PC5,在物理层也称为“直行”或者说“侧行”(sidelink,简称SL)链路,用于区别上行(uplink,简称UL)链路和下行(downlink,简称DL)链路。
随着5G NR标准化工作的进行,以及3GPP识别出更多高级的V2X业务(eV2X业务)需求,3GPP V2X phase 3,即NR V2X开始提上日程。2018年6月,在3GPP RAN#80次全会上,一个关于3GPP NR V2X的新的研究项目(参见非专利文献3,下面简称NR V2X研究项目,或者V2X Phase 3研究项目)获得批准。NR V2X研究项目的目标之一就是研究新的基于5G系统的SL接口的设计。
在NR V2X中,SL接口的物理层支持在有覆盖(in-coverage)、无覆盖(out-of-coverage)和部分覆盖(partial-coverage)场景下进行广播(broadcast)、组播(groupcast)和单播(unicast)传输。
NR V2X支持SL同步功能。相关的信号和信道包括:
●SL PSS(Sidelink Primary Synchronization Signal,直行主同步信号),又称为S-PSS,或者PSSS(Primary Sidelink Synchronization Signal,主直行同步信号)。
●SL SSS(Sidelink Secondary Synchronization Signal,直行辅同步信号),又称为S-SSS,或者SSSS(Secondary Sidelink Synchronization Signal,辅直行同步信号)。
●PSBCH(Physical Sidelink Broadcast Channel,物理直行广播信道)。
在NR V2X中,SL PSS、SL SSS和PSBCH在时频资源格上组织成块状的形式,称为SL SSB(Sidelink SS/PBCH block,直行同步信号/物理广播信道块),或者S-SSB。SL SSB的传输带宽在给UE所配置的SL BWP(Sidelink Bandwidth Part,直行带宽片段)内。SL PSS和/或SL SSS可以携带SL SSID(Sidelink Synchronization Identity,直行同步标识,或者Sidelink Synchronization Signal Identity,直行同步信号标识),PSBCH可以携带SL MIB(Sidelink Master Information Block,直行主信息块)。
NR V2X的同步源(synchronization source,有时候又称为同步参考,synchronization reference)可以包括GNSS(Global navigation satellite system,全球导航卫星系统)、gNB、eNB和NR UE。同步源的优先级定义如表5所示。其中,UE通过(预)配置信息确定是使用“基于GNSS的同步”还是使用“基于gNB/eNB的同步”。
表5 NR V2X同步源优先级
| 优先级 | 基于GNSS的同步 | 基于gNB/eNB的同步 |
| P0 | GNSS | gNB/eNB |
| P1 | 所有直接同步到GNSS的UE | 所有直接同步到gNB/eNB的UE |
| P2 | 所有间接同步到GNSS的UE | 所有间接同步到gNB/eNB的UE |
| P3 | 任何其他UE | GNSS |
| P4 | N/A | 所有直接同步到GNSS的UE |
| P5 | N/A | 所有间接同步到GNSS的UE |
| P6 | N/A | 任何其他UE |
在无覆盖场景下,以及在RRC_IDLE状态下,一个NR V2X载波上可以(预)配置一个SL BWP(Sidelink Bandwidth Part)。在有覆盖场景下,一个NR V2X载波上只有一个有效的(或者说激活的)SL BWP。一个SL BWP上可以(预)配置一个或多个资源池(Resource Pool,指可以用于SL传输和/或接收的时频资源集合)。
NR V2X的资源分配方式可以分类如下:
●模式1:基站调度用于SL传输的SL资源。
●模式2:UE确定用于SL传输的SL资源(即基站不参与SL资源的调度)。模式2又可以细分为下面几种情况:
◆有时候,在上下文清楚的情况下,例如从上下文可以看出 是指和PDSCH处理有关的能力的情况下,PDSCH处理能力1也可以称为UE处理能力1。
在NR V2X中所涉及的其他信道至少包括:
●PSSCH(Physical Sidelink Shared Channel,物理直行共享信道)。
●PSCCH(Physical Sidelink Control Channel,物理直行控制信道)。
●PSFCH(Physical Sidelink Feedback Channel,物理直行反馈信道)。
在NR V2X中,UE通过PSCCH所携带的SCI(Sidelink Control Information,直行控制信息)调度PSSCH所携带的数据的传输。取决于所调度的是单播或者组播或者广播传输,以及是否需要HARQ反馈等因素,SCI中可以包含下面中的一项或多项:
●层1源标识符(Layer-1 Source ID),或者说物理层源标识符(Physical Layer Source ID)。
●层1目标标识符(Layer-1 Destination ID),或者说物理层目标标识符(Physical Layer Source ID)。
●HARQ进程标识(HARQ Process ID),或者说HARQ进程号(HARQ Process Number)。
●新数据标识(New Data Indicator,NDI)。
●冗余版本(Redundancy Version,RV)。
在NR V2X中,SL链路的设计可能面临的问题至少包括:
●不同UE发送的SL信道之间的加扰序列可能存在冲突。
●不同UE所确定UE ID(特别是短ID,如物理层ID)可能存在冲突,导致无法在物理层正确识别源和/或目的UE ID。
●在基于GNSS的SL同步中,即使基站已经同步到了GNSS,仍然无法作为UE的同步源,极大增加了UE选择低优先级同步源、甚至选择不到同步源的概率。
现有技术文献
非专利文献
非专利文献1:RP-160671,New SID Proposal:Study on New Radio Access Technology
非专利文献2:RP-170855,New WID on New Radio Access Technology
非专利文献3:RP-181429,New SID:Study on NR V2X
发明内容
为了解决上述问题中的至少一部分,本发明的目的之一是提出一种由用户设备执行的方法以及用户设备,通过改进在确定PDSCH处理能力1时参考处理能力假设的定义,使得UE和基站可以无歧义地确定一致的PDSCH处理能力1所对应的持续时间,从而使得UE可以及时地进行上行传输定时的调整、准确地确定重传随机接入前导的时间、准确地确定RAR上行授权所调度的PUSCH的时间、或者准确地确定针对包含了UE冲突解决标识的PDSCH的HARQ-ACK的发送时间。
为了实现上述目的,根据本发明,提出了一种由用户设备执行的方法,包括:在上行时隙n接收定时提前命令的步骤;以及根据接收所述定时提前命令的时间,将应用上行传输定时调整的时间确定为从上行时隙n+k+1的起点开始的步骤,其中,k进一步根据N
1个符号的持续时间确定,N
1的值对应于以下至少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,n、k和N
1均为整数。
优选地,所述上行时隙n是和进行PDSCH接收的一个或多个时隙重叠的上行时隙的最后一个时隙。
另外,根据本发明,提出了一种由用户设备执行的方法,包括:发送随机接入前导的步骤;以及若所述用户设备在所述随机接入响应RAR窗口内没有检测到用随机接入无线网络临时标识RA-RNTI加扰了循环冗余校验CRC的下行链路控制信息DCI格式1_0,或者在所述RAR窗口中 没有正确接收到所述DCI格式1_0所调度的物理下行链路共享信道PDSCH中的传输块,或者没有识别所述随机接入前导标识RAPID,则所述用户设备的高层指示物理层重传随机接入前导的步骤,其中,所述用户设备重传随机接入前导的时间不迟于所述RAR窗口的最后一个符号后的第一时间或者所述PDSCH接收的最后一个符号后的第一时间,所述第一时间根据N
1个符号的持续时间确定,N
1的值对应于以下至少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,N
1为整数。
此外,根据本发明,提出了一种由用户设备执行的方法,包括:接收物理下行链路共享信道PDSCH携带的随机接入响应RAR消息中包含的RAR上行授权的步骤;以及传输由接收到的所述RAR上行授权所调度的物理上行链路共享信道PUSCH的步骤,其中,所述PDSCH接收的最后一个符号和所述PUSCH传输的第一个符号之间的最小时间根据N
1个符号的持续时间确定,N
1的值对应于以下至少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,N
1为整数。
另外,根据本发明,提出了一种由用户设备执行的方法,包括:检测用临时小区无线网络临时标识TC-RNTI加扰了循环冗余校验CRC的DCI格式1_0,并接收所述DCI格式1_0调度的物理下行链路共享信道PDSCH的步骤;以及在物理上行链路控制信道PUCCH中传输针对所述PDSCH的HARQ-ACK信息,其中,所述PDSCH接收的最后一个符号和所述PUCCH传输的第一个符号之间的最小时间根据N
1个符号的持续时间确 定,N
1的值对应于以下至少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,N
1为整数。
优选地,所述PDSCH包含用户设备冲突解决标识
优选地,在用户设备配置了额外的PDSCH DM-RS的情况下,所述参考处理能力假设包括以下的一项或多项:
○高层参数dmrs-DownlinkForPDSCHMappingTypeA没有配置;
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig没有配置;
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition没有配置;
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值不是“pos0”;
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos1”;
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos2”;
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos3”;
○高层参数dmrs-DownlinkForPDSCHMappingTypeB没有 配置;
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig没有配置;
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition没有配置;
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值不是“pos0”;
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos1”;
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos2”;
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos3”。
优选地,在用户设备未配置额外的PDSCH DM-RS的情况下,所述参考处理能力假设包括以下的一项或多项:
○高层参数dmrs-DownlinkForPDSCH-MappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition配置为pos0;
○高层参数dmrs-DownlinkForPDSCH-MappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition配置为pos0。
优选地,所述参考处理能力假设还包括以下的一项或多项:
◆PDSCH由下行链路控制信息DCI格式1_0调度;
◆PDSCH由DCI格式1_1调度;
◆用户设备配置了PDSCH映射类型A;
◆用户设备配置了PDSCH映射类型B;
◆PDSCH的解调参考信号DMRS配置为单符号DM-RS;
◆PDSCH的DMRS配置为双符号DM-RS;
◆PDSCH所在时隙的第一个正交频分复用OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l
d是一个小于13的值;
◆PDSCH所在时隙的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l
d=13;
◆PDSCH所在时隙的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l
d=14;
◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l
d是一个小于13的值;
◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l
d=13;
◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l
d=14;
◆PDSCH的第二个DM-RS符号的位置l
1=11;
◆PDSCH的第二个DM-RS符号的位置l
1=12。
◆μ=0且UE配置了额外的PDSCH DM-RS时的PDSCH解码时间N
1,0=13。
◆μ=0且UE配置了额外的PDSCH DM-RS时的PDSCH解码时间N
1,0=14。
此外,根据本发明,提出了一种用户设备,包括:处理器;以及存储器,存储有指令;其中,所述指令在由所述处理器运行时执行以上所述的方法。
发明效果
根据本发明,通过改进在确定PDSCH处理能力1时参考处理能力假 设的定义,使得UE和基站可以无歧义地确定一致的PDSCH处理能力1所对应的持续时间,从而使得UE可以及时地进行上行传输定时的调整、准确地确定重传随机接入前导的时间、准确地确定RAR上行授权所调度的PUSCH的时间、或者准确地确定针对包含了UE冲突解决标识的PDSCH的HARQ-ACK的发送时间。
通过下文结合附图的详细描述,本发明的上述和其它特征将会变得更加明显,其中:
图1是示出了根据本发明的实施例一的由用户设备执行的方法的流程图。
图2是示出了根据本发明的实施例二的由用户设备执行的方法的流程图。
图3是示出了根据本发明的实施例三的由用户设备执行的方法的流程图。
图4是示出了根据本发明的实施例四的由用户设备执行的方法的流程图。
图5是示出了根据本发明的实施例五的由用户设备执行的方法的流程图。
图6是示出了根据本发明的实施例六的由用户设备执行的方法的流程图。
图7是示意性示出本发明所涉及的用户设备的框图。
下面结合附图和具体实施方式对本发明进行详细阐述。应当注意,本发明不应局限于下文所述的具体实施方式。另外,为了简便起见,省略了对与本发明没有直接关联的公知技术的详细描述,以防止对本发明的理解造成混淆。
下文以5G移动通信系统及其后续的演进版本作为示例应用环境,具体描述了根据本发明的多个实施方式。然而,需要指出的是,本发明不限 于以下实施方式,而是可适用于更多其它的无线通信系统,例如5G之后的通信系统以及5G之前的4G移动通信系统等。
下面描述本发明涉及的部分术语,如未特别说明,本发明涉及的术语采用此处定义。本发明给出的术语在LTE、LTE-Advanced、LTE-Advanced Pro、NR以及之后的通信系统中可能采用不同的命名方式,但本发明中采用统一的术语,在应用到具体的系统中时,可以替换为相应系统中采用的术语。
3GPP:3rd Generation Partnership Project,第三代合作伙伴计划
BWP:Bandwidth Part,带宽片段
CA:Carrier Aggregation,载波聚合
CP:Cyclic Prefix,循环前缀
CP-OFDM:Cyclic Prefix Orthogonal Frequency Division Multiplexing,循环前缀正交频分复用
C-RNTI:Cell RNTI,小区无线网络临时标识
DC:Dual Connectivity,双连接
DFT-s-OFDM:Discrete Fourier Transformation Spread Orthogonal Frequency Division Multiplexing,离散傅里叶变换扩频正交频分复用
DL:Downlink,下行
DL-SCH:Downlink Shared Channel,下行共享信道
DM-RS:Demodulation reference signal,解调参考信号
eMBB:Enhanced Mobile Broadband,增强的移动宽带通信
HARQ:Hybrid Automatic Repeat Request,混合自动重复请求
HARQ-ACK:HARQ Acknowledgement,混合自动重复请求确认
IE:Information Element,信息元素
LCID:Logical Channel ID,逻辑信道标识符
LTE-A:Long Term Evolution-Advanced,长期演进技术升级版
MAC:Medium Access Control,介质访问控制
MAC CE:MAC Control Element,MAC控制元素
MCG:Master Cell Group,主小区组
mMTC:massive Machine Type Communication,大规模机器类通信
NR:New Radio,新无线电
NUL:Normal Uplink,正常上行
OFDM:Orthogonal Frequency Division Multiplexing,正交频分复用
PBCH:Physical Broadcast Channel,物理广播信道
PDSCH:Physical Downlink Shared Channel,物理下行共享信道
PRACH:Physical Random Access Channel,物理随机接入信道
PSBCH:Physical Sidelink Broadcast Channel,物理直行广播信道
PSCCH:Physical Sidelink Control Channel,物理直行控制信道
PSFCH:Physical Sidelink Feedback Channel,物理直行反馈信道
PSSCH:Physical Sidelink Shared Channel,物理直行共享信道
PSS:Primary Synchronization Signal,主同步信号
PSSS:Primary Sidelink Synchronization Signal,主直行同步信号
PTAG:Primary Timing Advance Group,主定时提前组
PUSCH:Physical uplink shared channel,物理上行共享信道
RAR:Random Access Response,随机接入响应
RB:Resource Block,资源块
RE:Resource Element,资源元素
RNTI:Radio Network Temporary Identifier,无线网络临时标识
RRC:Radio Resource Control,无线资源控制
SCG:Secondary Cell Group,次小区组
SCI:Sidelink Control Information,直行控制信息
SCS:Subcarrier Spacing,子载波间隔
SFN:System Frame Number,系统帧号
SIB:System Information Block,系统信息块
SL:Sidelink,直行
SL BWP:Sidelink Bandwidth Part,直行带宽片段
SL PSS:Sidelink Primary Synchronization Signal,直行主同步信号
SL SSB:Sidelink SS/PBCH block,直行同步信号/物理广播信道块
SL SSS:Sidelink Secondary Synchronization Signal,直行辅同步信号
SpCell:Special Cell,特殊小区
SSB:SS/PBCH block,同步信号/物理广播信道块
SSS:Secondary Synchronization Signal,辅同步信号
SSSS:Secondary Sidelink Synchronization Signal,辅直行同步信号
STAG:Secondary Timing Advance Group,辅定时提前组
SUL:Supplementary Uplink,补充上行
TA:Timing Advance,定时提前
TAG:Timing Advanced Group,定时提前组
TC-RNTI:Temporary C-RNTI,临时小区无线网络临时标识
TDD:Time Division Duplexing,时分双工
UE:User Equipment,用户设备
UL:Uplink,上行
URLLC:Ultra-Reliable and Low Latency Communication,超可靠低延迟通信
V2I:Vehicle-to-Infrastructure,车辆到基础设施
V2N:Vehicle-to-network,车辆到网络
V2P:Vehicle-to-Pedestrian,车辆到行人
V2V:Vehicle-to-vehicle,车辆到车辆
V2X:Vehicle-to-everything,车辆到任何实体
如未特别说明,在本发明所有实施例和实施方式中:
●初始有效上行BWP(initial active UL BWP)也可以称为初始上行BWP(initial UL BWP),例如可以通过高层参数initialuplinkBWP进行配置。
●初始有效下行BWP(initial active DL BWP)也可以称为初始下行BWP(initial DL BWP),例如可以通过高层参数initialDownlinkBWP进行配置。
●μ表示子载波间隔配置。μ=0,1,2,3,4分别对应SCS=15kHz,30kHz,60kHz,120kHz,240kHz。
[实施例一]
下面,结合图1来说明本发明的实施例一的由用户设备执行的方法。
图1是示出了根据本发明的实施例一的由用户设备执行的方法的流程图。
如图1所示,在本发明的实施例一中,用户设备UE执行的步骤包括:步骤S101、步骤S103。
具体地,在步骤S101,在上行时隙n接收定时提前命令。其中,
●所述上行时隙n可以是和进行PDSCH接收的一个或多个时隙重叠的上行时隙的最后一个时隙。
●所述PDSCH可以是提供定时提前命令的PDSCH。
●在确定所述上行时隙n时,可以假设T
TA=0,其中,T
TA是上行传输定时调整的值,单位是秒。
●在确定所述上行时隙n时,所使用的SCS可以是所述定时提前命令所指示的TAG中配置的所有上行载波中配置的所有上行BWP所使用的SCS的最小值。
此外,在步骤S103,根据接收所述定时提前命令的时间,和/或其他与上行传输定时调整有关的信息,将应用上行传输定时调整的时间确定为从时隙n+k+1的起点开始。其中,
◆N
T,1表示N
1个符号的持续时间(单位为毫秒)。
◆N
T,2表示N
2个符号的持续时间(单位为毫秒),其中N
2可以对应PUSCH时序能力1(PUSCH timing capability 1)所对应的PUSCH准备时间(PUSCH preparation time)。其中,
○有时候,在上下文清楚的情况下,例如从上下文可以看出是指和PUSCH时序有关的能力的情况下,PUSCH时序能力1也可以称为UE处理能力1。
◆N
TA,max是指最大的定时提前值(单位为毫秒)。
◆在确定N
1和N
2时所使用的SCS可以是下面中最小的SCS:
○所述定时提前命令所指示的TAG中配置的所有上行载波中配置的所有上行BWP所使用的SCS。
○所述所有上行载波所对应的下行载波中配置的所有下行BWP所使用的SCS。
◆在确定N
1和N
2时所使用的SCS也可以按其他方式定义。
◆在确定N
TA,max时所使用的SCS可以是下面中最小的SCS:
○所述定时提前命令所指示的TAG中配置的所有上行载波中配置的所有上行BWP所使用的SCS。
◆所有已配置的初始上行BWP。
◆在确定N
TA,max时所使用的SCS也可以按其他方式定义。
可选地,在本发明的实施例一中,一个给定的上行载波中配置的“所有上行BWP”可以包含初始有效上行BWP,也可以不包含初始有效上行BWP。
可选地,在本发明的实施例一中,一个给定的下行载波中配置的“所有下行BWP”可以包含初始有效下行BWP,也可以不包含初始有效下行BWP。
在本实施例一中,N
1可以对应参考处理能力假设成立时的PDSCH处理能力1(PDSCH processing capability 1)所定义的PDSCH解码时间(PDSCH decoding time,也可以称为PDSCH处理时间,PDSCH processing time),也可以对应PDSCH处理能力1所定义的最大PDSCH解码时间,也可以对应配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间,也可以对应PDSCH处理能力1所定义的最小PDSCH解码时间,也可以对应配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间。其中,
●有时候,在上下文清楚的情况下,例如从上下文可以看出是指和PDSCH处理有关的能力的情况下,PDSCH处理能力1也可以称为UE处理能力1。
●有时候,在上下文清楚的情况下,PDSCH解码时间也可以称为 PDSCH接收时间。
●所述PDSCH解码时间可以是对应一个确定的SCS(例如15kHz,又如30kHz,又如60kHz,又如120kHz)的PDSCH解码时间。
●所述PDSCH解码时间也可以是对应所有SCS的PDSCH解码时间。例如,“配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间”可以是配置了额外的PDSCH DM-RS时PDSCH处理能力1针对所有SCS所定义的PDSCH解码时间中的最大值。
●参考处理能力假设可以是下面中的一项或多项(在适用的情况下按“与”或者“或”的方式任意组合):
◆UE配置了额外的PDSCH DM-RS。例如,下面中的一项或多项(在适用的情况下按“与”或者“或”的方式任意组合):
○高层参数dmrs-DownlinkForPDSCHMappingTypeA没有配置。
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig没有配置。
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition没有配置。
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值不是“pos0”。
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配 置的值等于“pos1”。
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos2”。
○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos3”。
○高层参数dmrs-DownlinkForPDSCHMappingTypeB没有配置。
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig没有配置。
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition没有配置。
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值不是“pos0”。
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos1”。
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos2”。
○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos3”。
◆UE未配置额外的PDSCH DM-RS。例如,下面中的一项或多项(在适用的情况下按“与”或者“或”的方式任意组合):
○高层参数dmrs-DownlinkForPDSCH-MappingTypeA中的 DMRS-DownlinkConfig中的dmrs-AdditionalPosition配置为pos0。
○高层参数dmrs-DownlinkForPDSCH-MappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition配置为pos0。
◆PDSCH由DCI格式1_0调度。
◆PDSCH由DCI格式1_1调度。
◆UE配置了PDSCH映射类型A。
◆UE配置了PDSCH映射类型B。
◆PDSCH的DMRS配置为单符号(single-symbol)DM-RS。
◆PDSCH的DMRS配置为双符号(double-symbol)DM-RS。
◆PDSCH所在时隙的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的持续时间(以符号个数为单位)l
d是一个小于13的值。
◆PDSCH所在时隙的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的持续时间(以符号个数为单位)l
d=13。
◆PDSCH所在时隙的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的持续时间(以符号个数为单位)l
d=14。
◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的持续时间(以符号个数为单位)l
d是一个小于13的值。
◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的持续时间(以符号个数为单位)l
d=13。
◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的持续时间(以符号个数为单位)l
d=14。
◆PDSCH的第二个DM-RS符号的位置l
1=11。
◆PDSCH的第二个DM-RS符号的位置l
1=12。
◆μ=0且UE配置了额外的PDSCH DM-RS时的PDSCH解 码时间N
1,0=13。
◆μ=0且UE配置了额外的PDSCH DM-RS时的PDSCH解码时间N
1,0=14。
这样,根据实施例一所述,本发明提供了一种方法,通过改进在确定PDSCH处理能力1时参考处理能力假设的定义,使得UE和基站可以无歧义地确定一致的PDSCH处理能力1所对应的持续时间,使得UE可以及时地进行上行传输定时的调整,保证了UE的上行传输定时误差维持在一个合理的范围内。
[实施例二]
下面,结合图2来说明本发明的实施例二的由用户设备执行的方法。
图2是示出了根据本发明的实施例二的由用户设备执行的方法的流程图。
如图2所示,在本发明的实施例二中,用户设备UE执行的步骤包括:步骤S201、步骤S203。
具体地,在步骤S201,发送随机接入前导(random access preamble,有时候也称为发送物理随机接入信道,Physical Random Access Channel,PRACH)。其中,所述随机接入前导的传输可以由高层触发,也可以由PDCCH命令(PDCCH order)触发,也可以由其他方式触发。
此外,在步骤S203,在RAR(Random Access Response,随机接入响应)窗口内检测用RA-RNTI加扰了CRC的DCI格式1_0。
可选地,若所述UE在所述RAR窗口内检测到所述DCI格式1_0,以及相应的PDSCH(即所述DCI格式1_0所调度的PDSCH),且所述UE的高层识别出所述PDSCH中携带的传输块中携带的RAPID(Random Access Preamble Identity,随机接入前导标识),例如所述RAPID与UE在步骤S201中发送的随机接入前导的索引一致,则所述UE的高层向物理层指示所述传输块中携带的RAR上行授权(UL grant)。
可选地,若所述UE在所述RAR窗口内没有检测到用RA-RNTI加扰了CRC的DCI格式1_0,或者在所述RAR窗口中没有正确接收到相应的PDSCH(即所述DCI格式1_0所调度的PDSCH)中的传输块,或者 没有识别所述RAPID(例如所述RAPID与UE在步骤S201中发送的随机接入前导的索引不一致),则所述UE的高层可以指示物理层传输(或者说重传)随机接入前导。此时,所述UE传输随机接入前导的时间应该不迟于所述RAR窗口的最后一个符号后N
T,1+0.75毫秒或者所述PDSCH接收的最后一个符号后N
T,1+0.75毫秒。其中,
●N
T,1表示N
1个符号的持续时间(单位为毫秒)。
在本实施例二中,N
1的值确定方式与以上描述的实施例一相同,因此省略其具体描述。
这样,根据实施例二所述,本发明提供了一种方法,通过改进在确定PDSCH处理能力1时参考处理能力假设的定义,使得UE和基站可以无歧义地确定一致的PDSCH处理能力1所对应的持续时间,使得UE可以准确地确定重传随机接入前导的时间,保证了随机接入过程的正确完成。
[实施例三]
下面,结合图3来说明本发明的实施例三的由用户设备执行的方法。
图3是示出了根据本发明的实施例三的由用户设备执行的方法的流程图。
如图3所示,在本发明的实施例三中,用户设备UE执行的步骤包括:步骤S301、步骤S303。
具体地,在步骤S301,接收RAR上行授权。其中,所述RAR上行授权可以包含在MAC RAR中,所述MAC RAR可以包含在一个MAC PDU中,所述MAC PDU可以由PDSCH携带。另外,有时候,在上下文清楚时,也可以认为所述PDSCH携带了一个“RAR消息”(RAR message),而RAR消息中包含了RAR上行授权。
此外,在步骤S303,传输由接收到的所述RAR上行授权所调度的PUSCH。其中,UE可以假设所述PDSCH接收(PDSCH reception)的最后一个符号和所述PUSCH传输的第一个符号之间的最小时间等于N
T,1+N
T,2+0.75。
●N
T,1表示N
1个符号的持续时间(单位为毫秒)。
●N
T,2表示N
2个符号的持续时间(单位为毫秒),其中N
2对应PUSCH时序能力1(PUSCH timing capability 1)所对应的PUSCH准备时间(PUSCH preparation time)。其中,
◆有时候,在上下文清楚的情况下,例如从上下文可以看出是指和PUSCH时序有关的能力的情况下,PUSCH时序能力1也可以称为UE处理能力1。
●在确定N
1和N
2时所使用的SCS可以是所述PDSCH和所述PUSCH所配置的SCS中较小的一个,也可以时按其他方式确定的SCS。
在本实施例三中,N
1的值确定方式与以上描述的实施例一相同,因此省略其具体描述。
这样,根据实施例三所述,本发明提供了一种方法,通过改进在确定PDSCH处理能力1时参考处理能力假设的定义,使得UE和基站可以无歧义地确定一致的PDSCH处理能力1所对应的持续时间,使得UE可以准确地确定RAR上行授权所调度的PUSCH的时间,保证了随机接入过程的正确完成。
[实施例四]
下面,结合图4来说明本发明的实施例四的由用户设备执行的方法。
图4是示出了根据本发明的实施例四的由用户设备执行的方法的流程图。
如图4所示,在本发明的实施例四中,用户设备UE执行的步骤包括:步骤S401、步骤S403。
具体地,在步骤S401,检测用TC-RNTI(Temporary C-RNTI,临时小区无线网络临时标识)加扰了CRC的DCI格式1_0,以及接收所述DCI格式1_0调度的PDSCH。其中,
●可选地,所述PDSCH可以包含UE冲突解决标识(contention resolution identity)。
●可选地,所述PDSCH可以用于回应RAR上行授权所调度的PUSCH传输。
此外,在步骤S403,在PUCCH中传输HARQ-ACK信息。其中,
●可选地,所述HARQ-ACK信息可以是用于回应所述PDSCH。
●可选地,所述PUCCH可以和所述PUSCH在同一个有效上行BWP内。
●所述PDSCH接收的最后一个符号和所述PUCCH传输的第一个符号之间的最小时间等于N
T,1+0.5毫秒。其中,
◆N
T,1表示N
1个符号的持续时间(单位为毫秒)。
可选地,本发明的实施例四只在UE未被提供C-RNTI时执行。
可选地,本发明的实施例四只在UE未处于RRC_CONNECTED模式时执行。
在本实施例四中,N
1的值确定方式与以上描述的实施例一相同,因此省略其具体描述。
这样,根据实施例四所述,本发明提供了一种方法,通过改进在确定PDSCH处理能力1时参考处理能力假设的定义,使得UE和基站可以无歧义地确定一致的PDSCH处理能力1所对应的持续时间,使得UE可以准确地确定针对包含了UE冲突解决标识的PDSCH的HARQ-ACK的发送时间,保证了随机接入过程的正确完成。
[实施例五]
下面,结合图5来说明本发明的实施例五的由用户设备执行的方法。
图5是示出了根据本发明的实施例五的由用户设备执行的方法的流程图。
如图5所示,在本发明的实施例五中,用户设备UE执行的步骤包括:步骤S501和步骤S503。
具体地,在步骤S501,获取与SL信道的加扰(scrambling)有关的指示信息。
其中,
●可选地,所述与SL信道的加扰有关的指示信息可以来自预定义信息,也可以来自所述UE的预配置信息,也可以来自所述UE的缺省配置信息,也可以来自基站(例如gNB,又如eNB),也可以来自其他UE,也可以是上述方式的组合。
●可选地,所述与SL信道的加扰有关的指示信息可以包含在RRC消息或者PC5RRC消息(例如MIB,又如SIB,又如SL MIB,又如预配置信息,又如缺省配置信息,又如其他RRC消息,又如其他PC5RRC消息)中,也可以包含在MAC CE中,也可以包含在下行控制信息(DCI)中,也可以包含在直行控制信息(SCI)中,也可以是上述方式的组合。
●可选地,所述与SL信道的加扰有关的指示信息可以通过所述UE的一个协议层(例如RRC层,又如NAS层,又如V2X层,又如应用层,又如物理层,又如MAC子层,又如RLC子层,又如PDCP子层,又如SDAP子层,又如其他协议层,在适用的情况下)向另一个协议层(例如RRC层,又如NAS层,又如V2X层,又如应用层,又如物理层,又如MAC子层,又如RLC子层,又如PDCP子层,又如SDAP子层,又如其他协议层,在适用的情况下)指示。
●所述SL信道可以是与SL同步有关的信道,也可以是与SL通信有关的信道,也可以是在SL载波上传输的其他信道。具体地,所述信道可以是PSBCH,也可以是PSCCH,也可以是PSSCH,也可以是PSFCH,也可以是其他SL信道。
●所述与SL信道的加扰有关的指示信息可以包含下面中的一项或多项:
○可选地,所述UE ID可以是物理层UE ID(或者说层1 UE ID,layer-1 UE ID),也可以是高层UE ID。可选地, 所述高层(higher layer,或者upper layer)可以指物理层以上(不包括物理层)的协议层或协议子层,例如MAC子层,又如RLC子层,又如PDCP子层,又如SDAP子层,又如RRC层,又如NAS层,又如V2X层,又如应用层。
○可选地,所述UE ID可以指一个具体的协议层或协议子层使用的UE ID,也可以指多个协议层或协议子层共同使用的UE ID。例如,所述UE ID可以是层2 UE ID,所述层2 UE ID可以被MAC子层、RLC子层、PDCP子层和SDAP子层中的一个或多个使用。
○可选地,所述UE ID可以是一个整数。例如4比特的整数,又如6比特的整数,又如8比特的整数,又如10比特的整数,又如12比特的整数,又如14比特的整数,又如16比特的整数,又如18比特的整数,又如20比特的整数,又如22比特的整数,又如24比特的整数,又如26比特的整数,又如28比特的整数,又如30比特的整数,又如32比特的整数,又如34比特的整数,又如36比特的整数,又如38比特的整数,又如40比特的整数,又如42比特的整数,又如44比特的整数,又如46比特的整数,又如48比特的整数,又如50比特的整数,又如52比特的整数,又如54比特的整数,又如56比特的整数,又如58比特的整数,又如60比特的整数,又如62比特的整数,又如64比特的整数。
○可选地,所述UE ID可以是在SL传输中用于标识源(source)UE的源UE ID或者用于标识目标(destination)UE的目标UE ID。
○可选地,所述UE ID可以用于标识一个UE,也可以用于标识一组UE(其中包含一个或多个UE);当所述UE ID用于标识一组UE时,也可以将所述UE ID称为 组ID(group ID)或UE组ID(UE group ID),相应地,所述源UE ID可以称为源组ID或源UE组ID,所述目标UE ID可以称为目标组ID或目标UE组ID。
○可选地,当提及所述UE ID时,既可以指所述UE ID的一部分比特(如8个最低有效位,或8个最高有效位,或16个最低有效位,或16个最高有效位)所对应的整数,也可以指所述UE ID的全部比特所对应的整数。
○可选地,所述UE ID可以针对单播(unicast)、组播(groupcast)和广播(broadcast)中的一个或多个分别进行配置。
○可选地,所述UE ID可以针对PSBCH、PSCCH、PSSCH和PSFCH中的一个或多个分别进行配置。
○可选地,所述UE ID可以针对所述SL信道所使用的不同资源分配模式(例如模式1,即基站调度用于UE的SL传输的SL资源;又如模式2,即UE确定用于UE的SL传输的SL资源)分别进行配置。
其中,
○可选地,所述SL同步ID又可以称为SLSS ID,或者SL-SSID,或者V2X SSID。
○可选地,所述SL同步ID可以是在SL PSS和/或SL SSS中携带的ID。
○可选地,所述SL同步ID的取值范围集合可以是{0,1,...,83},也可以是{0,1,...,167},也可以是{0,1,...,251},也可以是{0,1,...,335},也可以是{0,1,...,419},也可以是{0,1,...,503},也可以是{0,1,...,587},也可以是{0,1,...,671},也可以是{0,1,...,755},也可以是{0,1,...,839},也可以是{0,1,...,923},也可以是{0,1,...,1007},也可以是{0,1,...,1091},也可以 是其他整数集合。
此外,在步骤S503,根据所述与SL信道的加扰有关的指示信息,和/或其他信息,确定所述SL信道的加扰序列。
其中,
●所述加扰序列可以是一个伪随机序列(pseudo-random sequence)。
例如,所述伪随机序列c(n)可以定义如下:
c(n)=(x
1(n+N
c)+x
2(n+N
c))mod 2
x
1(n+31)=(x
1(n+3)+x
1(n))mod 2
x
2(n+31)=(x
2(n+3)+x
2(n+2)+x
2(n+1)+x
2(n))mod 2
其中,
◆N
C=1600。
◆x
1(n)初始化为x
1(0)=1,x
1(n)=0,n=1,2,...,30。
其中,M可以是{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31}中的一个值,N可以是{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31}中的一个值,“|”是比特或(bitwise OR)操作符。
这样,本发明的实施例五通过在进行SL信道的加扰序列的初始化时使用一个特殊的加扰ID,至少部分避免了不同UE发送的SL信道之间的加扰序列的冲突,从而极大减少了不同SL信道之间的可能存在的互相干扰。另外,使用一个较长的ID对SL信道进行加扰也极大减少、甚至完全避免了由于短ID(如物理层ID)的潜在冲突而导致的无法在物理层正确识别源和/或目的UE ID等问题。
[实施例六]
下面,结合图6来说明本发明的实施例六的由用户设备执行的方法。
图6是示出了根据本发明的实施例六的由用户设备执行的方法的流程图。
如图6所示,在本发明的实施例六中,用户设备UE执行的步骤包括:步骤S601和步骤S603。
具体地,在步骤S601,获取与SL同步(synchronization)有关的指示信息。
其中,
●可选地,所述与SL同步有关的指示信息可以来自预定义信息,也可以来自所述UE的预配置信息,也可以来自所述UE的缺省配置信息,也可以来自基站(例如gNB,又如eNB),也可以来自其他UE,也可以是上述方式的组合。
●可选地,所述与SL同步有关的指示信息可以包含在RRC消息或者PC5RRC消息(例如MIB,又如SIB,又如SL MIB,又如预配置信息,又如缺省配置信息,又如其他RRC消息,又如 其他PC5RRC消息)中,也可以包含在MAC CE中,也可以包含在下行控制信息(DCI)中,也可以包含在直行控制信息(SCI)中,也可以是上述方式的组合。
●可选地,所述与SL同步有关的指示信息可以通过所述UE的一个协议层(例如RRC层,又如NAS层,又如V2X层,又如应用层,又如物理层,又如MAC子层,又如RLC子层,又如PDCP子层,又如SDAP子层,又如其他协议层,在适用的情况下)向另一个协议层(例如RRC层,又如NAS层,又如V2X层,又如应用层,又如物理层,又如MAC子层,又如RLC子层,又如PDCP子层,又如SDAP子层,又如其他协议层,在适用的情况下)指示。
●可选地,所述与SL同步有关的指示信息可以包含下面中的一项或多项:
◆SL同步方式。其中,
○可选地,所述SL同步方式可以按照SL的主要的同步源(synchronization source,又可以称为同步参考,synchronization reference)进行分类。例如,所述SL同步方式可以包括基于GNSS的同步以及基于gNB/eNB的同步。
◆基站同步到GNSS的信息。其中,
○可选地,所述基站可以是gNB,也可以是eNB,也可以是其他基站。
○可选地,所述基站同步到GNSS的信息可以指示一个或多个基站同步到GNSS的信息。
○可选地,可以从多个基站分别获取其中每个所述基站同步到GNSS的信息。
例如,所述“基站同步到GNSS的信息”可以包含下面中的一项或多项:
○基站是否同步到GNSS。例如基站已同步到GNSS,又如基站已直接同步到GNSS,又如基站已间接同步到 GNSS,又如基站未同步到GNSS。
○基站所同步的GNSS的类型,例如GPS(Global Positioning System,全球定位系统),又如GLONASS(GLObal NAvigation Satellite System,全球导航卫星系统),又如BeiDou(北斗导航卫星系统),又如Galileo(伽利略导航卫星系统),又如QZSS(Quasi-Zenith Satellite System,准天顶卫星系统)。可选地,可以根据所述基站所同步的GNSS的类型隐式地确定基站是否同步到GNSS(例如通过一个空的GNSS类型指示未同步到GNSS)。
○帧号偏移。例如基站的SFN和SL链路上的DFN(Direct Frame Number)之间的偏移,又如SL链路上的DFN和基站的SFN之间的偏移。
○子帧偏移。例如基站的子帧和SL链路上的子帧之间的偏移。又如SL链路上的子帧和基站的子帧之间的偏移。其中,所述子帧可以是在帧内编号的子帧,也可以是全局编号的时隙(例如对一个SFN周期内所有SFN内的子帧进行编号)。
○时隙偏移。例如基站的时隙和SL链路上的时隙之间的偏移,又如SL链路上的时隙和基站的时隙之间的偏移。其中,所述时隙可以是在子帧内编号的时隙,也可以是在帧内编号的时隙,也可以是全局编号的时隙(例如对一个SFN周期内所有SFN内的时隙进行编号)。
○符号偏移。例如基站的OFDM符号和SL链路上的OFDM符号之间的偏移,又如SL链路上的OFDM符号和基站的OFDM符号之间的偏移。其中,所述OFDM符号可以是在时隙内编号的OFDM符号,也可以是在子帧内编号的OFDM符号,也可以是在帧内编号的OFDM符号,也可以是全局编号的OFDM符号(例如对一个SFN周期内所有SFN内的OFDM符号进行编 号)。
此外,在步骤S603,根据所述与SL同步有关的指示信息,和/或其他信息,确定同步源和优先级之间的对应关系。例如确定每个优先级所分别对应的同步源,又如确定每个同步源所分别对应的优先级。
其中,
●可选地,所述同步源可以是实际检测到的同步源,也可以是没有检测到的同步源,也可以两者都包括。
●可选地,每个优先级可以包括一种或多种同步源。
●可选地,所述优先级从高到低可以依次记为P0,P1,P2,P3,P4,P5,P6,……。
●可选地,所述同步源和优先级之间的对应关系可以与所述“基站同步到GNSS的信息”有关。例如,若所述“同步方式”指示基于GNSS的同步,且所述“基站同步到GNSS的信息”指示基站已同步到GNSS,则相应的基站可以作为一个同步源(例如优先级为P0,又如优先级为P1,又如优先级为P2,又如优先级为P3,又如优先级为P4,又如优先级为P5,又如优先级为P6)。此时,所述基站的优先级可以等于GNSS,也可以小于GNSS;另外,所述基站的优先级可以大于所有直接同步到GNSS的UE,也可以等于所有直接同步到GNSS的UE,也可以小于所有直接同步到GNSS的UE;另外,所述基站的优先级可以大于所有间接同步到GNSS的UE,也可以等于所有间接同步到GNSS的UE,也可以小于所有间接同步到GNSS的UE。
●可选地,若所述“同步方式”指示基于GNSS的同步,则应用下面中的任意一项:
◆P0对应GNSS,P1对应所有直接同步到GNSS的UE,P2对应所有间接同步到GNSS的UE,P3对应任何其他UE。
◆P0对应GNSS以及所有同步到GNSS的gNB/eNB,P1对应所有直接同步到GNSS的UE,P2对应所有间接同步到GNSS的UE,P3对应任何其他UE。
◆P0对应GNSS,P1对应所有同步到GNSS的gNB/eNB以 及所有直接同步到GNSS的UE,P2对应所有间接同步到GNSS的UE,P3对应任何其他UE。
◆P0对应GNSS,P1对应所有同步到GNSS的gNB/eNB,P2对应所有直接同步到GNSS的UE,P3对应所有间接同步到GNSS的UE,P4对应任何其他UE。
◆P0对应GNSS,P1对应所有直接同步到GNSS的UE,P2对应所有同步到GNSS的gNB/eNB,P3对应所有间接同步到GNSS的UE,P4对应任何其他UE。
◆P0对应GNSS以及所有直接同步到GNSS的gNB/eNB,P1对应所有间接同步到GNSS的gNB/eNB以及所有直接同步到GNSS的UE,P2对应所有间接同步到GNSS的UE,P3对应任何其他UE。
◆P0对应GNSS,P1对应所有直接同步到GNSS的gNB/eNB以及所有直接同步到GNSS的UE,P2对应所有间接同步到GNSS的gNB/eNB以及所有间接同步到GNSS的UE,P3对应任何其他UE。
◆P0对应GNSS以及所有直接同步到GNSS的gNB/eNB,P1对应所有间接同步到GNSS的gNB/eNB,P2对应所有直接同步到GNSS的UE,P3对应所有间接同步到GNSS的UE,P4对应任何其他UE。
◆P0对应GNSS以及所有直接同步到GNSS的gNB/eNB,P1对应所有直接同步到GNSS的UE,P2对应所有间接同步到GNSS的gNB/eNB,P3对应所有间接同步到GNSS的UE,P4对应任何其他UE。
◆P0对应GNSS,P1对应所有直接同步到GNSS的gNB/eNB,P2对应所有间接同步到GNSS的gNB/eNB以及所有直接同步到GNSS的UE,P3对应所有间接同步到GNSS的UE,P4对应任何其他UE。
◆P0对应GNSS,P1对应所有直接同步到GNSS的gNB/eNB,P2对应所有间接同步到GNSS的gNB/eNB,P3对应所有直 接同步到GNSS的UE,P4对应所有间接同步到GNSS的UE,P5对应任何其他UE。
◆P0对应GNSS,P1对应所有直接同步到GNSS的gNB/eNB,P2对应所有直接同步到GNSS的UE,P3对应所有间接同步到GNSS的gNB/eNB,P4对应所有间接同步到GNSS的UE,P5对应任何其他UE。
◆P0对应GNSS,P1对应所有直接同步到GNSS的UE,P2对应所有直接同步到GNSS的gNB/eNB,P3对应所有间接同步到GNSS的gNB/eNB,P4对应所有间接同步到GNSS的UE,P5对应任何其他UE。
●可选地,若所述“同步方式”指示基于gNB/eNB的同步,则应用下面中的任意一项:
◆P0对应gNB/eNB,P1对应所有直接同步到gNB/eNB的UE,P2对应所有间接同步到gNB/eNB的UE,P3对应GNSS,P4对应所有直接同步到GNSS的UE,P5对应所有间接同步到GNSS的UE,P6对应任何其他UE。
这样,本发明的实施例六通过在基站同步到GNSS时将其添加到基于GNSS的同步的同步源中,极大增强了在此类同步中UE选中高优先级的同步源的概率,改善了NR V2X中SL同步的性能。
[变形例]
下面,利用图7来说明作为一种变形例的可执行本发明上面所详细描述的用户设备执行的方法的用户设备。
图7是表示本发明所涉及的用户设备UE的框图。
如图7所示,该用户设备UE70包括处理器701和存储器702。处理器701例如可以包括微处理器、微控制器、嵌入式处理器等。存储器702例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器702上存储有程序指令。该指令在由处理器701运行时,可以执行本发 明详细描述的由用户设备执行的上述方法。
上文已经结合优选实施例对本发明的方法和涉及的设备进行了描述。本领域技术人员可以理解,上面示出的方法仅是示例性的,而且以上说明的各实施例在不发生矛盾的情况下能够相互组合。本发明的方法并不局限于上面示出的步骤和顺序。上面示出的网络节点和用户设备可以包括更多的模块,例如还可以包括可以开发的或者将来开发的可用于基站、MME、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的,本发明并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。
应该理解,本发明的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如,上述实施例中的基站和用户设备内部的各种组件可以通过多种器件来实现,这些器件包括但不限于:模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD),等等。
在本申请中,“基站”可以指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心,包括资源分配调度、数据接收发送等功能。“用户设备”可以指用户移动终端,例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。
此外,这里所公开的本发明的实施例可以在计算机程序产品上实现。更具体地,该计算机程序产品是如下的一种产品:具有计算机可读介质,计算机可读介质上编码有计算机程序逻辑,当在计算设备上执行时,该计算机程序逻辑提供相关的操作以实现本发明的上述技术方案。当在计算系统的至少一个处理器上执行时,计算机程序逻辑使得处理器执行本发明实施例所述的操作(方法)。本发明的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上,以使 得计算设备中的一个或多个处理器执行本发明实施例所描述的技术方案。
此外,上述每个实施例中所使用的基站设备和终端设备的每个功能模块或各个特征可以由电路实现或执行,所述电路通常为一个或多个集成电路。设计用于执行本说明书中所描述的各个功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)或通用集成电路、现场可编程门阵列(FPGA)或其他可编程逻辑器件、分立的门或晶体管逻辑、或分立的硬件组件、或以上器件的任意组合。通用处理器可以是微处理器,或者所述处理器可以是现有的处理器、控制器、微控制器或状态机。上述通用处理器或每个电路可以由数字电路配置,或者可以由逻辑电路配置。此外,当由于半导体技术的进步,出现了能够替代目前的集成电路的先进技术时,本发明也可以使用利用该先进技术得到的集成电路。
尽管以上已经结合本发明的优选实施例示出了本发明,但是本领域的技术人员将会理解,在不脱离本发明的精神和范围的情况下,可以对本发明进行各种修改、替换和改变。因此,本发明不应由上述实施例来限定,而应由所附权利要求及其等价物来限定。
Claims (10)
- 一种由用户设备执行的方法,包括:在上行时隙n接收定时提前命令的步骤;以及根据接收所述定时提前命令的时间,将应用上行传输定时调整的时间确定为从上行时隙n+k+1的起点开始的步骤,其中,k进一步根据N 1个符号的持续时间确定,N 1的值对应于以下至少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,n、k和N 1均为整数。
- 根据权利要求1所述的方法,其中,所述上行时隙n是和进行PDSCH接收的一个或多个时隙重叠的上行时隙的最后一个时隙。
- 一种由用户设备执行的方法,包括:发送随机接入前导的步骤;以及若所述用户设备在所述随机接入响应RAR窗口内没有检测到用随机接入无线网络临时标识RA-RNTI加扰了循环冗余校验CRC的下行链路控制信息DCI格式1_0,或者在所述RAR窗口中没有正确接收到所述DCI格式1_0所调度的物理下行链路共享信道PDSCH中的传输块,或者没有识别所述随机接入前导标识RAPID,则所述用户设备的高层指示物理层重传随机接入前导的步骤,其中,所述用户设备重传随机接入前导的时间不迟于所述RAR窗口的最后一个符号后的第一时间或者所述PDSCH接收的最后一个符号后的第一时间,所述第一时间根据N 1个符号的持续时间确定,N 1的值对应于以下至 少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,N 1为整数。
- 一种由用户设备执行的方法,包括:接收物理下行链路共享信道PDSCH携带的随机接入响应RAR消息中包含的RAR上行授权的步骤;以及传输由接收到的所述RAR上行授权所调度的物理上行链路共享信道PUSCH的步骤,其中,所述PDSCH接收的最后一个符号和所述PUSCH传输的第一个符号之间的最小时间根据N 1个符号的持续时间确定,N 1的值对应于以下至少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,N 1为整数。
- 一种由用户设备执行的方法,包括:检测用临时小区无线网络临时标识TC-RNTI加扰了循环冗余校验CRC的DCI格式1_0,并接收所述DCI格式1_0调度的物理下行链路共享信道PDSCH的步骤;以及在物理上行链路控制信道PUCCH中传输针对所述PDSCH的HARQ-ACK信息,其中,所述PDSCH接收的最后一个符号和所述PUCCH传输的第一个符号之间的最小时间根据N 1个符号的持续时间确定,N 1的值对应于以下至少一项:参考处理能力假设成立时的物理下行链路共享信道PDSCH 处理能力1所定义的PDSCH解码时间、PDSCH处理能力1所定义的最大PDSCH解码时间、配置了额外的PDSCH解调参考信号DM-RS时PDSCH处理能力1所定义的最大PDSCH解码时间、PDSCH处理能力1所定义的最小PDSCH解码时间、以及配置了额外的PDSCH DM-RS时PDSCH处理能力1所定义的最小PDSCH解码时间,其中,N 1为整数。
- 根据权利要求5所述的方法,其中,所述PDSCH包含用户设备冲突解决标识
- 根据权利要求1、3、4和5中的任一项所述的方法,其中,在用户设备配置了额外的PDSCH DM-RS的情况下,所述参考处理能力假设包括以下的一项或多项:○高层参数dmrs-DownlinkForPDSCHMappingTypeA没有配置;○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig没有配置;○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition没有配置;○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值不是“pos0”;○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos1”;○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos2”;○高层参数dmrs-DownlinkForPDSCHMappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos3”;○高层参数dmrs-DownlinkForPDSCHMappingTypeB没有配置;○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig没有配置;○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition没有配置;○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值不是“pos0”;○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos1”;○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos2”;○高层参数dmrs-DownlinkForPDSCHMappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition所配置的值等于“pos3”。
- 根据权利要求1、3、4和5中的任一项所述的方法,其中,在用户设备未配置额外的PDSCH DM-RS的情况下,所述参考处理能力假设包括以下的一项或多项:○高层参数dmrs-DownlinkForPDSCH-MappingTypeA中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition配置为pos0;○高层参数dmrs-DownlinkForPDSCH-MappingTypeB中的DMRS-DownlinkConfig中的dmrs-AdditionalPosition配置为pos0。
- 根据权利要求1、3、4和5中的任一项所述的方法,其中,所述参考处理能力假设还包括以下的一项或多项:◆PDSCH由下行链路控制信息DCI格式1_0调度;◆PDSCH由DCI格式1_1调度;◆用户设备配置了PDSCH映射类型A;◆用户设备配置了PDSCH映射类型B;◆PDSCH的解调参考信号DMRS配置为单符号DM-RS;◆PDSCH的DMRS配置为双符号DM-RS;◆PDSCH所在时隙的第一个正交频分复用OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l d是一个小于13的值;◆PDSCH所在时隙的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l d=13;◆PDSCH所在时隙的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l d=14;◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l d是一个小于13的值;◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l d=13;◆PDSCH的第一个OFDM符号和所述PDSCH的最后一个OFDM符号之间的以符号个数为单位的持续时间l d=14;◆PDSCH的第二个DM-RS符号的位置l 1=11;◆PDSCH的第二个DM-RS符号的位置l 1=12。◆μ=0且UE配置了额外的PDSCH DM-RS时的PDSCH解码时间N 1,0=13。◆μ=0且UE配置了额外的PDSCH DM-RS时的PDSCH解码时间N 1,0=14。
- 一种用户设备,包括:处理器;以及存储器,存储有指令;其中,所述指令在由所述处理器运行时执行根据权利要求1至9中的任一项所述的方法。
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| CN118714664A (zh) * | 2023-03-24 | 2024-09-27 | 夏普株式会社 | 由用户执行的方法以及用户设备 |
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| US20220191938A1 (en) | 2022-06-16 |
| US12058742B2 (en) | 2024-08-06 |
| CN111757510A (zh) | 2020-10-09 |
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