WO2023185688A1 - Procédé exécuté par un équipement utilisateur, et équipement utilisateur - Google Patents

Procédé exécuté par un équipement utilisateur, et équipement utilisateur Download PDF

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Publication number
WO2023185688A1
WO2023185688A1 PCT/CN2023/083807 CN2023083807W WO2023185688A1 WO 2023185688 A1 WO2023185688 A1 WO 2023185688A1 CN 2023083807 W CN2023083807 W CN 2023083807W WO 2023185688 A1 WO2023185688 A1 WO 2023185688A1
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Prior art keywords
user equipment
resource
listening
time slot
reserve
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PCT/CN2023/083807
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English (en)
Chinese (zh)
Inventor
赵毅男
罗超
刘仁茂
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夏普株式会社
赵毅男
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Publication of WO2023185688A1 publication Critical patent/WO2023185688A1/fr

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies

Definitions

  • the present invention relates to the field of wireless communication technology, and specifically to methods executed by user equipment and corresponding user equipment.
  • D2D communication (Device-to-Device communication, direct communication between devices) refers to a direct communication method between two user devices without forwarding by a base station or core network.
  • 3GPP 3rd Generation Partnership Project
  • the upper layer supports unicast (Unicast) and multicast (Groupcast) communication functions.
  • LTE Release 13 eD2D The main features introduced in LTE Release 13 eD2D include:
  • V2X Vehicle to everything and hopes to realize information interaction between vehicles and all entities that may affect the vehicle. The purpose is to reduce accidents, slow down traffic congestion, reduce environmental pollution and provide other information services.
  • V2X application scenarios mainly include four aspects:
  • V2P Vehicle to Pedestrian, that is, vehicles send warnings to pedestrians or non-motorized vehicles
  • V2N Vehicle to Network, that is, vehicles connected to mobile networks
  • V2I Vehicle to Infrastructure, that is, communication between vehicles and road infrastructure.
  • V2X stage 1 introduces a new D2D communication interface called the PC5 interface.
  • the PC5 interface is mainly used to solve cellular vehicle networking communication problems in high-speed (up to 250 km/h) and high-node density environments. Vehicles can interact with information such as position, speed and direction through the PC5 interface, that is, vehicles can communicate directly through the PC5 interface.
  • the functions introduced by LTE Release 14 V2X mainly include:
  • the second phase of the V2X research topic falls under the LTE Release 15 research category (see Non-Patent Document 4).
  • the main features introduced include high-order 64QAM modulation, V2X carrier aggregation, short TTI transmission, and also includes feasibility studies on transmit diversity.
  • resource allocation mode 2 (resource allocation mode 2) based on user equipment sensing (sensing) is supported, also known as transmission mode 2.
  • resource allocation mode 2 the physical layer of the user equipment senses the transmission resources in the resource pool and reports the set of available transmission resources to the upper layer. After obtaining the report from the physical layer, the upper layer selects resources for sidelink communication transmission.
  • NR sidelink enhancement The enhancement of sideline communication includes the following two aspects:
  • Standardize the resource allocation method to reduce the power consumption (power saving) of side-link communication user equipment including but not limited to: resource allocation method based on partial sensing (partial sensing), a resource allocation method based on random resource selection;
  • the physical layer of the user equipment senses the transmission resources in the resource pool, indicating that the user equipment excludes them based on the received indication information in the SCI sent by other user equipment. ) resources in the candidate resource set that overlap with the resources indicated by the above indication information, and resources that are not excluded in the candidate resource set are reported to the higher layer.
  • the solution of this patent mainly includes a method for sideline communication user equipment to determine listening (sensing) time slots in a resource allocation method based on partial sensing.
  • Non-patent document 1 RP-140518, Work item proposal on LTE Device to Device Proximity Services
  • Non-patent document 2 RP-142311, Work Item Proposal for Enhanced LTE Device to Device Proximity Services
  • Non-patent document 3 RP-152293, New WI proposal: Support for V2V services based on LTE sidelink
  • Non-patent document 4 RP-170798, New WID on 3GPP V2X Phase 2
  • Non-patent document 5 RP-181480, New SID Proposal: Study on NR V2X
  • Non-patent literature 6 RP-202846, WID revision: NR sidelink enhancement
  • the present invention provides a method executed by user equipment and user equipment.
  • the method performed by user equipment includes: a higher layer requests or triggers the user equipment to determine a resource subset for PSSCH/PSCCH transmission, wherein, The higher layer selects side-link communication resources for the PSSCH/PSCCH transmission in the resource subset; the user equipment determines a set of candidate time slots; and the user equipment determines a set of listening time slots.
  • the user equipment performs period-based partial sensing when at least the following conditions are met.
  • Condition 1 The high layer configures the resource allocation mode of the user equipment to be based on The partially aware resource allocation method; and/or condition two: the resource pool is configured or pre-configured to periodically reserve resources for another transport block; and/or condition three: the resource pool is configured or pre-configured.
  • the configured resource allocation method includes a resource allocation method based on the partial sensing.
  • the way in which the user equipment determines the set of candidate time slots depends on the implementation of the user equipment.
  • the user equipment listening time slot set in the case where the user equipment performs the period-based partial sensing, the user equipment listening time slot set is in, Indicates any time slot in the candidate time slot set.
  • P reserve when a listening cycle list is configured in the resource pool, P reserve corresponds to the cycle or non-zero cycle in the listening cycle list; otherwise, P reserve corresponds to All periods or all non-zero periods in the resource reservation period list configured in the resource pool, for k, if no additional periodic monitoring time slots are configured or pre-configured, then means corresponding to a given P reserve , at time the most recent periodic listening slot; otherwise, means corresponding to a given P reserve , at time The most recent periodic listening slot before and the previous periodic listening slot before the most recent periodic listening slot, where, Represents the first time slot in the time domain in the candidate time slot set, represents the first processing delay, Indicates the second processing delay.
  • the user equipment listening time slot set is That middle, Represents any time slot in the candidate time slot set, Among them, T′ max represents the number of time slots belonging to the resource pool within 10240ms.
  • P reserve when the listening cycle list is configured in the resource pool, P reserve corresponds to the cycle or non-zero cycle in the listening cycle list. ; Otherwise, P reserve corresponds to all periods or all non-zero periods in the resource reservation period list configured in the resource pool.
  • a user equipment includes: a processor; and a memory storing instructions; wherein the instructions execute the method of the first aspect when executed by the processor.
  • the set of monitoring time slots determined by the user equipment does not include the set of candidate time slots, so as to avoid the loss of the time slot due to half-duplex restrictions.
  • the set cannot become a candidate time slot set, which improves the reliability of sidelink communication.
  • Figure 1 is a schematic diagram showing LTE V2X UE side-link communication.
  • FIG. 2 is a schematic diagram showing the resource allocation method of LTE V2X.
  • FIG. 3 is a schematic diagram showing the basic process of the method executed by the user equipment in the first and second embodiments of the invention.
  • Figure 4 is a block diagram illustrating user equipment according to an embodiment of the present invention.
  • the following uses the 5G mobile communication system and its subsequent evolved versions as an example application environment to specifically describe multiple embodiments according to the present invention.
  • the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as communication systems after 5G and 4G mobile communication systems before 5G.
  • 3GPP 3rd Generation Partnership Project, third generation partner program
  • LTE Long Term Evolution, long-term evolution technology
  • PDCCH Physical Downlink Control Channel, physical downlink control channel
  • DCI Downlink Control Information, downlink control information
  • PDSCH Physical Downlink Shared Channel, physical downlink shared channel
  • UE User Equipment, user equipment
  • eNB evolved NodeB, evolved base station
  • gNB NR base station
  • TTI Transmission Time Interval, transmission time interval
  • OFDM Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing
  • CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing with cyclic prefix
  • C-RNTI Cell Radio Network Temporary Identifier, residential wireless network temporary identifier
  • CSI Channel State Information, channel state information
  • CSI-RS Channel State Information Reference Signal, channel state information reference signal
  • CRS Cell Reference Signal, cell-specific reference signal
  • PUCCH Physical Uplink Control Channel, physical uplink control channel
  • PUSCH Physical Uplink Shared Channel, physical uplink shared channel
  • UL-SCH Uplink Shared Channel, uplink shared channel
  • SCI Sidelink Control Information, side communication control information
  • PSCCH Physical Sidelink Control Channel, physical sidelink communication control channel
  • MCS Modulation and Coding Scheme, modulation coding scheme
  • RB Resource Block, resource block
  • CRB Common Resource Block, public resource block
  • CP Cyclic Prefix, cyclic prefix
  • PRB Physical Resource Block, physical resource block
  • PSSCH Physical Sidelink Shared Channel, physical sidelink communication shared channel
  • FDM Frequency Division Multiplexing, frequency division multiplexing
  • RRC Radio Resource Control, wireless resource control
  • RSRP Reference Signal Receiving Power, reference signal receiving power
  • SRS Sounding Reference Signal, detection reference signal
  • DMRS Demodulation Reference Signal, demodulation reference signal
  • CRC Cyclic Redundancy Check, cyclic redundancy check
  • PSDCH Physical Sidelink Discovery Channel, physical sidelink communication discovery channel
  • PSBCH Physical Sidelink Broadcast Channel, physical sidelink communication broadcast channel
  • TDD Time Division Duplexing, time division duplexing
  • FDD Frequency Division Duplexing, frequency division duplexing
  • SIB1 System Information Block Type 1, system information block type 1
  • SLSS Sidelink synchronization Signal, side communication synchronization signal
  • PSSS Primary Sidelink Synchronization Signal, side communication main synchronization signal
  • SSSS Secondary Sidelink Synchronization Signal, side communication auxiliary synchronization signal
  • PCI Physical Cell ID, physical cell identification
  • PSS Primary Synchronization Signal, main synchronization signal
  • SSS Secondary Synchronization Signal, auxiliary synchronization signal
  • BWP BandWidth Part, bandwidth fragment/part
  • GNSS Global Navigation Satellite System, Global Navigation Satellite Positioning System
  • SFN System Frame Number, system (wireless) frame number
  • DFN Direct Frame Number, direct frame number
  • SSB Synchronization Signal Block, synchronization system information block
  • EN-DC EUTRA-NR Dual Connection, LTE-NR dual connection
  • MCG Master Cell Group, main cell group
  • SCG Secondary Cell Group, secondary cell group
  • PCell Primary Cell, main cell
  • SCell Secondary Cell, auxiliary cell
  • PSFCH Physical Sidelink Feedback Channel, physical sidelink communication feedback channel
  • SPS Semi-Persistant Scheduling, semi-static scheduling
  • PT-RS Phase-Tracking Reference Signals, phase tracking reference signal
  • CB Code Block, coding block/code block
  • QPSK Quadrature Phase Shift Keying, quadrature phase shift keying
  • 16/64/256 QAM 16/64/256 Quadrature Amplitude Modulation, quadrature amplitude modulation
  • AGC Auto Gain Control, automatic gain control
  • TDRA Time Domain Resource Assignment, time domain resource allocation indication (domain)
  • FDRA Frequency Domain Resource Assignment, frequency domain resource allocation indication (domain)
  • ARFCN Absolute Radio Frequency Channel Number, absolute radio frequency channel number
  • SC-FDMA Single Carrier-Frequency Division Multiple Access, single carrier-frequency division multiplexing multiple access
  • MAC Medium Access Control, media access control layer
  • V2X and sidelink mentioned in the specification of the present invention have the same meaning.
  • V2X in this article can also represent sidelink; similarly, sidelink in this article can also represent V2X, and no specific distinction or limitation will be made in the following article.
  • the resource allocation method of V2X (sidelink) communication and the transmission mode of V2X (sidelink) communication in the specification of the present invention can be equivalently replaced.
  • the resource allocation method mentioned in the specification may represent a transmission mode, and the transmission mode involved may represent a resource allocation method.
  • transmission mode 1 represents the transmission mode (resource allocation method) based on base station scheduling
  • transmission mode 2 represents the transmission mode (resource allocation method) based on user equipment sensing and resource selection.
  • the PSCCH in the specification of the present invention is used to carry SCI.
  • the description of the invention relates to
  • the PSSCH corresponding to the received PSCCH, or corresponding, or related, or scheduled PSSCH all have the same meaning, and they all represent associated PSSCH or corresponding PSSCH.
  • the PSSCH corresponding, corresponding, or related SCI (including first-level SCI and second-level SCI) mentioned in the specification all have the same meaning, and they all mean associated SCI or corresponding SCI.
  • the first level SCI is called 1st stage SCI or SCI format 1-A, which is transmitted in PSCCH;
  • the second level SCI is called 2nd stage SCI or SCI format 2-A (or, SCI format 2-B) , transmitted in the corresponding PSSCH resources.
  • the parameter set numerology includes two meanings: subcarrier spacing and cyclic prefix CP length.
  • Table 4.2-1 shows the supported transmission parameter set, as follows shown.
  • each time slot contains 14 OFDM symbols; for Extended CP, each time slot contains 12 OFDM symbols.
  • NR and LTE have the same definition of subframe, which means 1ms.
  • subframe For the subcarrier spacing configuration ⁇ , the slot number within 1 subframe (1ms) can be expressed as Range is 0 arrive The slot number within a system frame (frame, duration 10ms) can be expressed as The range is 0 to in, and The definitions under different subcarrier spacing ⁇ are shown in the following table.
  • Table 4.3.2-1 The number of symbols contained in each slot, the number of slots contained in each system frame, and the number of slots contained in each subframe during normal CP
  • Table 4.3.2-2 The number of symbols contained in each slot, the number of slots contained in each system frame, and the number of slots contained in each subframe when extending CP (60kHz)
  • the number SFN of a system frame ranges from 0 to 1023.
  • the concept of direct system frame number DFN is introduced in sideline communication, and the number range is also 0 to 1023.
  • the above description of the relationship between system frames and numerology can also be applied to direct system frames, for example, the duration of a direct system frame Also equal to 10ms, for a subcarrier spacing of 15kHz, a direct system frame consists of 10 slots, etc.
  • DFN is applied to timing on sidelink carriers.
  • LTE only supports 15kHz subcarrier spacing.
  • LTE supports extended CP and normal CP.
  • the subframe duration is 1ms and contains two slots, each slot duration is 0.5ms.
  • each subframe contains 14 OFDM symbols, and each slot in the subframe contains 7 OFDM symbols; for extended CP, each subframe contains 12 OFDM symbols, and each slot in the subframe contains 6 OFDM symbols.
  • the resource block RB is defined in the frequency domain as A continuous subcarrier, for example, for a subcarrier spacing of 15kHz, RB is 180kHz in the frequency domain.
  • the resource unit RE represents one subcarrier in the frequency domain and one OFDM symbol in the time domain.
  • Both UEs performing sidelink communication have network coverage (for example, the UE detects at least one cell that satisfies the "cell selection criterion" on the frequency that requires sidelink communication, Indicates that the UE has network coverage).
  • Partial-Coverage sidelink communication One of the UEs performing sidelink communication has no network coverage, and the other UE has network coverage.
  • the UE From the UE side, the UE has only two scenarios: no network coverage and one with network coverage. Part of the network coverage is described from the perspective of sidelink communication.
  • FIG. 1 is a schematic diagram showing LTE V2X UE side-link communication.
  • UE1 sends sidelink communication control information (SCI format 1) to UE2, which is carried by the physical layer channel PSCCH.
  • SCI format 1 contains PSSCH scheduling information, such as PSSCH frequency domain resources, etc.
  • UE1 sends sidelink communication data to UE2, which is carried by the physical layer channel PSSCH.
  • the PSCCH and the corresponding PSSCH adopt frequency division multiplexing, that is, the PSCCH and the corresponding PSSCH are located in the same subframe in the time domain and located in different RBs in the frequency domain.
  • a transport block TB may contain only one initial transmission, or one initial transmission and one blind retransmission. (blind retransmission, indicating retransmission not based on HARQ feedback).
  • PSCCH occupies one subframe in the time domain and two consecutive RBs in the frequency domain.
  • the scrambling sequence is initialized with a predefined value of 510.
  • PSCCH can carry SCI format 1, where SCI format 1 at least contains the frequency domain resource information of PSSCH. For example, for the frequency domain resource indication field, SCI format 1 indicates the starting sub-channel number and the number of consecutive sub-channels of the PSSCH corresponding to the PSCCH.
  • PSSCH occupies one subframe in the time domain, and uses frequency division multiplexing (FDM) with the corresponding PSCCH.
  • PSSCH occupies one or more consecutive sub-channels in the frequency domain.
  • Sub-channel represents n subCHsize consecutive RBs in the frequency domain.
  • n subCHsize is configured by RRC parameters, the starting sub-channel and the number of consecutive sub-channels. Indicated by the frequency domain resource indication field of SCI format 1.
  • FIG. 2 shows two resource allocation methods of LTE V2X, which are respectively called resource allocation based on base station scheduling (Transmission Mode 3) and resource allocation based on UE sensing (Transmission Mode 4).
  • transmission mode 3 of LTE V2X corresponds to transmission mode 1 in NR V2X, which is a transmission mode based on base station scheduling
  • transmission mode 4 of LTE V2X corresponds to transmission mode 2 in NR V2X, which is based on UE perception. transmission mode.
  • the base station can configure the resource allocation method of the UE through UE-level dedicated RRC signaling (dedicated RRC signaling) SL-V2X-ConfigDedicated, or the transmission mode of the UE. ,Specifically:
  • Resource allocation method based on base station scheduling means that the frequency domain resources used in sidelink side communication come from the scheduling of the base station.
  • Transmission mode 3 includes two scheduling methods, namely dynamic scheduling and semi-static scheduling (SPS).
  • DCI format 5A includes the frequency domain resources of PSSCH, and the CRC of the PDCCH or EPDCCH carrying DCI format 5A is scrambled by SL-V-RNTI.
  • SPS semi-static scheduling the base station configures one or more (up to 8) configurations through IE: SPS-ConfigSL-r14 Each configured scheduling grant contains a scheduling grant number (index) and the resource period of the scheduling grant.
  • the UL grant (DCI format 5A) includes frequency domain resources of the PSSCH, as well as indication information (3 bits) of the scheduling grant number and indication information of SPS activation (activate) or release (release, or deactivation).
  • indication information (3 bits) of the scheduling grant number and indication information of SPS activation (activate) or release (release, or deactivation).
  • the CRC of PDCCH or EPDCCH carrying DCI format 5A is scrambled by SL-SPS-V-RNTI.
  • the RRC signaling SL-V2X-ConfigDedicated when the RRC signaling SL-V2X-ConfigDedicated is set to scheduled-r14, it means that the UE is configured in a transmission mode based on base station scheduling.
  • the base station configures SL-V-RNTI or SL-SPS-V-RNTI through RRC signaling, and uses PDCCH or EPDCCH (DCI format 5A).
  • the CRC is scrambled with SL-V-RNTI or scrambled with SL-SPS-V-RNTI.
  • the above-mentioned uplink scheduling grant UL grant at least contains the scheduling information of PSSCH frequency domain resources in sidelink communication.
  • the UE When the UE successfully monitors the PDCCH or EPDCCH scrambled by SL-V-RNTI or SL-SPS-V-RNTI, it will use the PSSCH frequency domain resource indication field in the uplink scheduling grant UL grant (DCI format 5A) as the PSCCH Indication information of frequency domain resources of PSSCH in (SCI format 1), and send PSCCH (SCI format 1) and corresponding PSSCH.
  • DCI format 5A the PSSCH frequency domain resource indication field in the uplink scheduling grant UL grant
  • the UE receives SL-SPS-V-RNTI scrambled DCI format 5A on downlink subframe n. If DCI format 5A contains SPS activation indication information, the UE determines the frequency domain resources of PSSCH based on the indication information in DCI format 5A, and determines the time domain resources of PSSCH (PSSCH transmission subframe) based on information such as subframe n.
  • Resource allocation method based on UE sensing means that the resources used for sidelink communication are based on the UE's sensing process of the candidate available resource set.
  • the resource allocation method based on UE sensing means that the resources used for sidelink communication are based on the UE's sensing process of the candidate available resource set.
  • the RRC signaling SL-V2X-ConfigDedicated is set to ue-Selected-r14, it means that the UE is configured in a transmission mode based on UE sensing.
  • the base station configures the available transmission resource pool, and the UE determines the sidelink transmission resources of PSSCH in the transmission resource pool (resource pool) according to certain rules (see the LTE V2X UE sensing process section for detailed process description). , and send PSCCH(SCI format 1) and the corresponding PSSCH.
  • the resources sent and received by the UE belong to the resource pool.
  • the base station schedules transmission resources for the sidelink UE in the resource pool, or for the transmission mode based on UE sensing in sidelink communication, the UE determines the transmission resources in the resource pool.
  • the sidelink communication user equipment selects candidate resources within a time window, and determines the reserved resources according to the reserved resources indicated by the PSCCH sent by other user equipments in the monitoring time slot. There are overlapping candidate resources, and these overlapping candidate resources are excluded.
  • the physical layer reports the set of candidate resources that have not been excluded to the MAC layer, and the MAC layer selects transmission resources for PSSCH/PSCCH.
  • the set of transmission resources selected by the MAC layer is called a selected sidelink grant.
  • the sensing-based resource allocation method means that the set of time slots monitored by the user equipment is a continuous time slot in the sensing window.
  • the resource allocation method based on partial sensing includes two parts, namely periodic-based partial sensing (PBPS) and continuous time slot-based partial sensing (contiguous partial sensing).
  • PBPS periodic-based partial sensing
  • CPS continuous time slot-based partial sensing
  • the higher layer requests or triggers the physical layer to determine the resources for PSSCH/PSCCH transmission (performing sensing or partial sensing) on time slot n.
  • the resource selection window is defined as [n+T1, n+T2], that is, the user equipment Intraoral selection of transmission resources.
  • T1 satisfies the condition The selection of T1 depends on the implementation of the user equipment; the RRC configuration information contains a configuration list sl-SelectionWindowList of a resource selection window, where the element in the list corresponds to a given priority prio TX (the priority of transmitting PSSCH). is T 2min .
  • T2 If T 2min is less than the remaining packet delay budget (remaining PDB for short), then T2 satisfies the condition T 2min ⁇ T2 ⁇ remaining PDB, and the selection of T2 depends on the implementation of the user equipment; otherwise, T2 is set to remaining PDB.
  • T2 is set to remaining PDB.
  • ⁇ SL represents the subcarrier spacing parameter of sidelink communication, that is, the subcarrier spacing is ):
  • Figure 3 shows the basic process of the method executed by user equipment according to Embodiment 1 of the present invention.
  • the steps performed by the user equipment include:
  • step S101 the higher layer (or upper layer) requests (or triggers) the sidelink communication user equipment (physical layer) to determine a resource subset for PSSCH/PSCCH transmission.
  • the higher layer selects side-link communication resources for PSSCH/PSCCH transmission in the resource subset.
  • the user equipment performs periodic-based partial sensing:
  • Condition 1 the higher layer configures the resource allocation method of the user equipment to be a resource allocation method based on partial sensing
  • Condition 2 Optionally, the periodic reservation resource configuration (or preconfiguration) for another transport block in the resource pool is enabled, that is, the RRC cell sl-MultiReserveResource is configured as "enable";
  • the resource allocation method of the resource pool configuration includes a resource allocation method based on partial sensing.
  • step S102 the sidelink communication user equipment determines a set of candidate slots.
  • the way in which the user equipment determines the candidate time slot set depends on the implementation of the user equipment (up to UE implementation).
  • step S103 the sidelink communication user equipment determines a listening time slot set.
  • the user equipment monitoring time slot set is in, Indicates (any) a time slot in the candidate time slot set.
  • P reserve when the listening period list is configured in the resource pool (periodicSensingOccasionReservePeriodList is configured), P reserve corresponds to the period in the list, optionally, except '0ms', or P reserve corresponds to the period in the list non-zero period; Otherwise, P reserve corresponds to all periods in the resource reservation period list (sl-ResourceReservePeriodList) configured in the resource pool, optionally except '0ms', or P reserve corresponds to all non-periods in the sl-ResourceReservePeriodList.
  • Zero cycle For k, if no additional periodic monitoring slot (additionalPeriodicSensingOccasion) is configured (or pre-configured), then, means corresponding to a given P reserve , at time The most recent periodic sensing occasion; otherwise, means corresponding to a given P reserve , at time The most recent periodic sensing occasion (the most recent periodic sensing occasion) and the previous periodic sensing slot before the most recent periodic sensing occasion. in, Indicates the first time slot in the time domain in the candidate time slot set.
  • additionalPeriodicSensingOccasion additionalPeriodicSensingOccasion
  • the steps performed by the user equipment include:
  • step S101 the higher layer (or upper layer) requests (or triggers) the sidelink communication user equipment (physical layer) to determine a resource subset for PSSCH/PSCCH transmission.
  • the higher layer selects side-link communication resources for PSSCH/PSCCH transmission in the resource subset.
  • the user equipment performs periodic-based partial sensing:
  • Condition 1 the higher layer configures the resource allocation method of the user equipment to be a resource allocation method based on partial sensing
  • Condition 2 Optionally, the periodic reservation resource configuration (or preconfiguration) for another transport block in the resource pool is enabled, that is, the RRC cell sl-MultiReserveResource is configured as "enable";
  • the resource allocation method of the resource pool configuration includes a resource allocation method based on partial sensing.
  • step S102 the sidelink communication user equipment determines a set of candidate slots.
  • the way in which the user equipment determines the candidate time slot set depends on the implementation of the user equipment (up to UE implementation).
  • step S103 the sidelink communication user equipment determines a listening time slot set.
  • T′ max represents the number of time slots belonging to the resource pool within 10240ms (SFN/DFN 0-1023).
  • P reserve when the listening period list is configured in the resource pool (periodicSensingOccasionReservePeriodList is configured), P reserve corresponds to the period in the list, optionally, except '0ms', or P reserve corresponds to the period in the list Non-zero period; otherwise, P reserve corresponds to all periods in the resource reservation period list (sl-ResourceReservePeriodList) configured in the resource pool, optionally except '0ms', or P reserve corresponds to the sl-ResourceReservePeriodList all non-zero periods in .
  • additionalPeriodicSensingOccasion means corresponding to a given P reserve , at time The most recent periodic sensing occasion; otherwise, means corresponding to a given P reserve , at time The most recent periodic sensing occasion (the most recent periodic sensing occasion) and the previous periodic sensing slot before the most recent periodic sensing occasion. in, when indicating the candidate The first time slot in the time domain in the slot set.
  • FIG. 4 is a block diagram showing user equipment UE according to the present invention.
  • the user equipment UE80 includes a processor 801 and a memory 802.
  • the processor 801 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like.
  • the memory 802 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory.
  • Memory 802 stores program instructions. When the instruction is executed by the processor 801, the above-mentioned method executed by the user equipment described in detail in the present invention can be executed.
  • 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 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 may be developed or developed in the future and may be used for base stations, MMEs, or UEs, and so on.
  • the various identifications shown above are only illustrative and not restrictive, and the present invention is not limited to the specific information elements as examples of these identifications. Many changes and modifications may be made by those skilled in the art in light of the teachings of the illustrated embodiments.
  • various components inside the base station and user equipment in the above embodiments can be implemented by a variety of devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processing processor, 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 user mobile terminals, including, for example, mobile phones, laptops and other terminal equipment that can conduct wireless communication with base stations or micro base stations.
  • embodiments of the invention disclosed herein may be implemented on a computer program product.
  • the computer program product is a product that has a computer-readable medium with computer program logic encoded on the computer-readable medium, and when executed on a computing device, the computer program logic provides relevant operations to implement The above technical solution of the present invention.
  • the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in embodiments of the invention.
  • Such arrangements of the invention are typically provided as software, code and/or other data structures disposed or encoded on a computer readable medium, such as an optical medium (eg, a CD-ROM), a floppy or hard disk, or the like, or as one or more Other media for 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 configuration may be installed on the computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.
  • each functional module or each feature of the base station equipment and terminal equipment used in each of the above embodiments may be implemented or executed by a circuit, which is usually one or more integrated circuits.
  • Circuitry designed to perform the various functions described in this specification may include a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) or general-purpose integrated circuit, field-programmable gate array (FPGA) or other Programmed logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above.
  • a general purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller or state machine.
  • the above-mentioned general processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit.
  • the present invention can also use an integrated circuit obtained by utilizing the advanced technology.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Sont décrits dans la présente invention un procédé exécuté par un équipement utilisateur, et un équipement utilisateur. Le procédé comprend les étapes suivantes : une couche supérieure demande ou commande à un équipement utilisateur de déterminer un sous-ensemble de ressources pour une transmission de PSSCH/PSCCH, dans lequel la couche supérieure sélectionne, à partir du sous-ensemble de ressources, une ressource de communication de liaison latérale pour la transmission de PSSCH/PSCCH ; l'équipement utilisateur détermine un ensemble de créneaux temporels candidats ; et l'équipement utilisateur détermine un ensemble de créneaux temporels de surveillance.
PCT/CN2023/083807 2022-03-28 2023-03-24 Procédé exécuté par un équipement utilisateur, et équipement utilisateur WO2023185688A1 (fr)

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