WO2024002244A1 - Procédé exécuté au moyen d'un équipement utilisateur, et équipement utilisateur - Google Patents

Procédé exécuté au moyen d'un équipement utilisateur, et équipement utilisateur Download PDF

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Publication number
WO2024002244A1
WO2024002244A1 PCT/CN2023/103871 CN2023103871W WO2024002244A1 WO 2024002244 A1 WO2024002244 A1 WO 2024002244A1 CN 2023103871 W CN2023103871 W CN 2023103871W WO 2024002244 A1 WO2024002244 A1 WO 2024002244A1
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Prior art keywords
symbol
transmission
channel
pssch
time
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PCT/CN2023/103871
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English (en)
Chinese (zh)
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罗超
赵毅男
刘仁茂
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夏普株式会社
罗超
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Publication of WO2024002244A1 publication Critical patent/WO2024002244A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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

Definitions

  • the present invention relates to a method executed by user equipment and user equipment.
  • SL sidelink, side link, or direct link, or direct link, or side link, or straight link for short
  • UEs User Equipment
  • direct communication
  • SL communication can include general D2D (device-to-device, device to device) communication, V2V (vehicle-to-vehicle, vehicle to vehicle) communication, V2X (vehicle-to-everything, vehicle to everything) communication, etc.
  • a series of issues need to be solved, such as the channel access mechanism; another example, the physical layer channel and/or Or the structure of the signal; another example, the physical layer process (such as synchronization process, another example, feedback and/or determination mechanism); another example, the allocation and/or management of resources; another example, coexistence with other systems.
  • Non-patent document 1 RP-152293, New WI proposal: Support for V2V services based on LTE sidelink, 3GPP TSG RAN Meeting #70
  • Non-patent document 2 RP-170798, New WID on 3GPP V2X Phase 2, 3GPP TSG RAN Meeting #75
  • Non-patent document 3 RP-170855, New WID on New Radio Access Technology, 3GPP TSG RAN Meeting #75
  • Non-patent document 4 RP-190766, New WID on 5G V2X with NR sidelink, 3GPP TSG RAN Meeting #83
  • Non-patent document 5 RP-201385, WID revision: NR sidelink enhancement, 3GPP TSG RAN Meeting #88e
  • Non-patent document 6 RP-213678, New WID on NR side link evolution, 3GPP TSG RAN Meeting #94e
  • the present invention provides a method performed by user equipment and user equipment, by introducing a CPE upper bound in the PSSCH preparation time, so that the base station can operate without performing unlicensed spectrum (for example, Without initializing and/or sharing any COT), schedule the UE's SL transmission in the unlicensed spectrum without increasing the complexity of the UE implementation.
  • a method executed by user equipment which is characterized by including: obtaining and/or determining information related to a side-travel permission, wherein the information includes an upper bound of a CPE; and, according to the The upper bound of the CPE determines one PSSCH preparation symbol; and, if the first SL symbol of the SL allocation corresponding to the first SL transmission of the sidelink grant schedule is not earlier than the PSSCH preparation symbol, the side The first SL transmission scheduled for the row grant; otherwise, the side row grant is ignored.
  • a user equipment including: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.
  • the present invention provides a method by introducing a CPE upper bound in the PSSCH preparation time, so that the base station can schedule the UE without performing unlicensed spectrum operations (for example, without initializing and/or sharing any COT). SL transmission in unlicensed spectrum without increasing the complexity of UE implementation.
  • Figure 1 shows a flow chart corresponding to a method executed by user equipment according to Embodiment 1 of the present invention.
  • FIG. 2 shows a block diagram of a UE (User Equipment) involved in the present invention.
  • 5G or NR ("New Radio"), or 5G NR
  • 5G NR New Radio
  • 3GPP 3rd Generation Partnership Project, 3rd Generation Partnership Project
  • 5G Advanced evolved versions
  • the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as 5G Later wireless communication systems, such as 4G mobile communication systems before 5G, such as LTE (Long Term Evolution, Long Term Evolution), LTE-Advanced, LTE-Advanced Pro, etc.
  • LTE Long Term Evolution, Long Term Evolution
  • LTE-Advanced Long Term Evolution-Advanced
  • LTE-Advanced Pro etc.
  • ⁇ "Higher layer(s), or upper layer(s) may refer to a given reference protocol layer or reference protocol sub-layer (such as the physical layer) in a given protocol stack.
  • the "higher layer” can refer to the MAC (Medium Access Control, Media Access Control) layer, or the RLC (Radio Link Control, Radio Link Control Protocol) layer, or PDCP (Packet Data Convergence Protocol, Packet Data Convergence Protocol) ) layer, or PC5RRC (Radio Resource Control, Radio Resource Control) layer, or PC5-S layer, or RRC layer, or V2X (Vehicle-to-everything, vehicle to everything) layer, or application layer, or V2X application layer, etc.
  • the reference protocol layer is the physical layer.
  • Configure can refer to a protocol layer (such as RRC layer) entity in a communication node (such as UE, or eNB, or gNB) providing configuration information to another protocol layer (such as physical layer) entity.
  • a protocol layer such as RRC layer
  • a communication node such as UE, or eNB, or gNB
  • another protocol layer such as physical layer
  • ⁇ "Configuration” may refer to one communication node providing configuration information to another communication node (for example, transmitting RRC signaling from the base station to the UE, which contains the configuration information; or transmitting PC5-RRC signaling from UE-A to UE-B). command, which contains the configuration information).
  • ⁇ "Configuration” may include "pre-configure”. Among them, “preconfiguration” may refer to presetting the corresponding configuration information in a specific storage location in the UE, or presetting the corresponding configuration information in a specific storage location that the UE can access.
  • ⁇ "Symbol refers to OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbol.
  • ⁇ It can represent the number of time slots in each subframe.
  • ⁇ It can represent the number of symbols in each time slot.
  • ⁇ A resource can correspond to one or more of the following:
  • the starting symbol of the resource For example, the starting symbol of the resource; another example, the starting time slot of the resource; another example, the number of symbols occupied by the resource; another example, the number of time slots occupied by the resource.
  • the starting sub-channel of the resource another example, the starting RB (resource block, resource block) of the resource; another example, the starting sub-carrier of the resource; another example, the sub-carrier occupied by the resource
  • the cyclic shift (cyclic shift) value or the corresponding cyclic shift index corresponding to the resource another example, the cyclic shift pair (cyclic shift pair) value or the corresponding cyclic shift pair index corresponding to the resource.
  • one "layer” may refer to a MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) layer.
  • ⁇ "RB can refer to VRB (virtual resource block, virtual resource block), or PRB (physical resource block, physical resource block), or CRB (common resource block, public resource block), or IRB (Interlaced Resource Block, interlaced resource) piece).
  • ⁇ "Number and "index” are interchangeable.
  • the number of an RB may also be called the index of the RB.
  • “numbering one RB to 0” can also be expressed as "indexing one RB to 0".
  • the numbering of elements in a sequence can start from 0.
  • the first RB of an RB set may be called RB 0 of the RB set.
  • ⁇ An object (such as a subcarrier, a time slot, a cyclic shift, etc.) can be represented by its index, for example, a CRB numbered 0 can be called CRB 0.
  • the quantity of said object It can be one, or multiple.
  • the "transmission(s)" may correspond to one transmission, or multiple transmissions.
  • ⁇ (x 1 , x 2 ) can represent the offset between x 1 and x 2 (offset between x 1 and x 2 ), where the x 1 and the x 2 can be two parameters that can be compared (or variable), or two possible values of a parameter (or variable) (for example, the x 1 and the x 2 can be two time slots, or two subframes, or two frames, or two sub carrier, or two RBs, or two sub-channels, etc.).
  • ⁇ (x 1 , x 2 ) can be equal to x 2 -x 1 .
  • ⁇ (x 1 , x 2 ) can be equal to
  • offset between x 1 and x 2 can also be called the offset of x 2 with respect to x 1 (offset of x 2 with respect to x 1 , or offset of x 2 relative to x 1 ).
  • the offset between x 1 and x 2 can also be called the offset from x 1 to x 2 (offset from x 1 to x 2 ).
  • the offset between two subcarriers may be between the center frequencies of said two subcarriers offset.
  • ⁇ Modulo Operation can be defined as r ⁇ a mod N, where,
  • ⁇ r is the remainder (remainder).
  • ⁇ a N ⁇ q+r, where, q can be called the integer quotient of a and N.
  • ⁇ The unit of microseconds can be recorded as ⁇ s or us.
  • a transmission that has not yet begun execution (eg, before the expected start time of the transmission is reached) may be called an "intended transmission”.
  • sensing slot duration may represent the duration of the corresponding sensing slot, or the sensing slot itself.
  • a "sensing slot” may represent the sensing slot itself, or the duration of the sensing slot.
  • power detection power detection
  • energy detection energy detection
  • energy detection threshold energy detection threshold
  • SL time slot can refer to a time slot configured or pre-configured with SL resources.
  • the "SL resources” may not include resources used for synchronization processes (for example, used to transmit S-SS/PSBCH (S-SS/Physical Sidelink Broadcast CHannel, or Sidelink-Synchronization Signal/Physical Sidelink Broadcast CHannel) block resources), or include resources for synchronization processes.
  • SL time slot can refer to a time slot belonging to a certain SL resource pool.
  • the set of SL symbols in an SL slot can be recorded as in respectively represent the index of the corresponding symbol in the time slot, where in is the index of the first SL symbol in the slot (for example, configured through the parameter sl-StartSymbol-r16), is the number of SL symbols in the time slot (for example, configured through the parameter sl-LengthSymbols-r16).
  • PSSCH Physical Sidelink Shared Channel
  • PSCCH Physical Sidelink Control Channel
  • the "first SL symbol” (or (referred to as the "first symbol") may be the symbol in the SL time slot (T SL,0 ) corresponding to the resource allocation. or symbol
  • the resource allocation contains the corresponding PSCCH and/or "duplicated symbols" (i.e.
  • the “first SL symbol” may refer to the symbol
  • the “first SL symbol” when it is not explicitly stated that the resource allocation contains "repeated symbols" in the corresponding PSCCH and/or PSSCH, the “first SL symbol” may refer to the symbol
  • the "first SL symbol” when performing physical resource mapping for the PSCCH and/or the PSSCH transmission (eg When placing the PSCCH/PSSCH transmission, or the corresponding PSCCH transmission, or the corresponding PSSCH transmission on the symbol Copy the resource element in to the symbol (before), or before physical resource mapping is performed for the corresponding PSCCH transmission and/or PSSCH transmission in the PSCCH/PSSCH transmission, the "first SL symbol” refers to the symbol
  • the CPE Cyclic Prefix Extension
  • the "first SL symbol" (or “first symbol") of a PSCCH/PSSCH transmission refers to the resource allocation corresponding to the transmission.
  • the "first SL symbol” in .
  • ⁇ "A subcarrier is in an SLBWP or RB set, or guard band
  • the center frequency of the subcarrier is in the bandwidth of the SL BWP (or RB set, or guard band).
  • the bandwidth of the subcarrier is within the bandwidth of the SLBWP (or RB set, or guard band).
  • the subcarrier is a subcarrier in the SL BWP (or RB set, or guard band).
  • ⁇ "A subcarrier is not in a SL BWP (or RB set, or guard band)" It can refer to one of the following:
  • the center frequency of the subcarrier is not in the bandwidth of the SL BWP (or RB set, or guard band).
  • the bandwidth of the subcarrier is not in the bandwidth of the SL BWP (or RB set, or guard band).
  • the subcarrier is not a subcarrier in the SL BWP (or RB set, or guard band).
  • ⁇ An S-SS/PSBCH block in a SL BWP (or RB set, or guard band)" can refer to one of the following:
  • the bandwidth of the S-SS/PSBCH block is within the bandwidth of the SL BWP (or RB set, or guard band).
  • ⁇ All subcarriers of the S-SS/PSBCH block are in the SL BWP (or RB set, or guard band). For example, "one subcarrier in one SL BWP (or RB set, or guard band)" can be applied to each subcarrier respectively.
  • ⁇ All subcarriers of the S-SS/PSBCH block are subcarriers in the SL BWP (or RB set, or guard band).
  • ⁇ "An S-SS/PSBCH block is not in a SL BWP (or RB set, or guard band)" refers to one of the following:
  • any part of the bandwidth of the S-SS/PSBCH block is not in the bandwidth of the SL BWP (or RB set, or guard band).
  • Any subcarrier of the S-SS/PSBCH block is not in the SL BWP (or RB set, or guard band).
  • the subcarrier is in the SL BWP (or RB set, or guard band)" is not true.
  • Any subcarrier of the S-SS/PSBCH block is not a subcarrier in the SL BWP (or RB set, or guard band).
  • a "frame” (frame, also known as "radio frame", radio frame) can be a system frame (system frame) or a direct frame (direct frame).
  • Each subframe may contain time slots, for example,
  • the index of a timeslot in a subframe can be recorded as The index of a time slot in the frame can be recorded as in, can be equal to 10 ⁇ 2 ⁇ .
  • the time slot index in a frame number period can be recorded as in can be equal to (For example, 1024 ⁇ (10 ⁇ 2 ⁇ )).
  • 5G (or NR, New Radio) can work in licensed spectrum (such as 2010MHz-2025MHz), or in unlicensed spectrum (such as part or all of 5150MHz-5925MHz, or part or all of 5925-7125MHz, Another example is part or all of 5925-6425MHz).
  • a 5G-enabled communication node When operating in unlicensed spectrum, a 5G-enabled communication node (or “node”, a base station, such as a UE, can perform a "channel access procedure" on a "channel” (or “shared spectrum channel", shared-spectrum channel). Among them, one channel can correspond to a set consisting of several consecutive resource blocks (RBs). Operations performed on one or more shared spectrum channels may be referred to as “operations with shared spectrum channel access” (operation with shared spectrum channel access). For comparison, operation on licensed spectrum can be called “operation without shared spectrum channel access" (operation without shared spectrum channel access).
  • a channel can correspond to a carrier, or a part of a carrier.
  • one channel can correspond to a 20MHz bandwidth carrier; another example, one channel can correspond to the lower frequency 20MHz of a 40MHz bandwidth carrier, and another channel can correspond to the higher frequency 20MHz of the same carrier.
  • a channel access procedure may be used to evaluate whether a channel can be used to perform one or more transmissions (alternatively referred to as "evaluating whether one or more transmissions can be performed on a channel"), where the evaluation operation may be referred to as CCA (Clear Channel Assessment, idle channel assessment).
  • CCA Cerar Channel Assessment, idle channel assessment
  • LBT Listen Before Talk
  • the status of a channel can be determined based on a "sensing" operation on the channel (for example, as a result or output of the channel access process).
  • the channel status "Idle” can indicate that the channel access is successful, or that the corresponding channel is available, or that one or more transmissions can be performed on the channel; for another example, the channel status "Busy” can indicate that the channel access fails. , or indicates that the corresponding channel is unavailable, or that no transmission can be performed on the channel).
  • the sensing result in the sensing slot durations (defer duration) is idle, and in the next N consecutive additional sensing slot durations (additional sensing slot duration(s)) If the sensing results in are all idle, then the sensing result of the channel can be determined to be idle.
  • N can be an integer greater than or equal to 0;
  • the period of time of length T f may start with a sensing time slot.
  • the corresponding channel cannot be accessed before the start time of an expected transmission (for example, before the first symbol corresponding to the transmission) (for example, the channel cannot be accessed because the status of the channel is "busy” ), it can be considered that a "channel access failure" has occurred, or, where applicable, an "LBT failure".
  • the transmission performed on the corresponding channel after performing the channel access procedure may be called “Channel Occupancy” (CO), and the corresponding duration may be called “Channel Occupancy Time” (COT).
  • COT can be in one or more Shared between communication nodes.
  • the time corresponding to the COT may include the time when the one or more communication nodes perform transmission on the corresponding channel, and the transmission gap (transmission gap) between these transmissions. time (for example, when the duration of the transmission interval is less than or equal to 25us).
  • Channel access procedures can be divided into multiple types based on usage, applicable scenarios, etc. For example, if the time spanned by the sensing time slot in which the sensing result is idle before transmission is performed is recorded as Then in "Channel Access Process Type 1", is random; in "channel access process type 2", is certain. Channel access process type 1 can be used for a non-shared COT or a shared COT; channel access process type 2 can be used to perform channel access in a COT shared by other communication nodes.
  • Channel access process type 2 can be done according to The characteristics are divided into multiple subtypes, for example, one or more of the following:
  • ⁇ Channel access process type 2A where, or, or, This can apply to the interval between the corresponding transmission and the immediately preceding transmission (e.g. denoted ) satisfies certain conditions, for example, Another example, Another example, Another example,
  • ⁇ Channel access process type 2B where, or, or, or, or, This can be applied to the When certain conditions are met, for example, Another example, Another example, again like, Another example,
  • ⁇ Channel access procedure type 2C where the corresponding channel is not sensed before performing the transmission (e.g., this may correspond to ). This can be applied to the When certain conditions are met, for example, Another example,
  • a “multi-channel access procedure” may refer to one or more transmissions (e.g. , multiple simultaneous One or more channel access procedures that are executed (e.g., executed in parallel) for each transmission).
  • the set CH sns may be equal to the set CH acc , or defined in other ways (for example, if no guard band is configured on the carrier where the channel in the set CH acc is located, the set CH sns may be equal to the carrier the set of all channels on).
  • a channel access procedure (for example, according to channel access procedure type 1) can be performed on each channel in the set CH sns , and it is determined according to the corresponding result whether the one or Multiple transmissions (for example, for each of the one or more transmissions, if the access results of all channels corresponding to the transmission are idle, the transmission may be performed).
  • one channel ch j may be selected (eg, uniformly and randomly selected) in the set CH sns and perform channel access procedure type 1 on it , while each other channel ch j in the set CH sns Channel access process type 2 (for example, channel access process type 2A, or channel access process type 2B, or channel access process type 2C) or another channel access process that is not channel access process type 1 is performed on the channel. , and determine whether the one or more transmissions can be performed based on the corresponding results.
  • Channel access process type 2 for example, channel access process type 2A, or channel access process type 2B, or channel access process type 2C
  • the set of available resource blocks in a channel can be called an "RB set" (RB set).
  • RB set RB set
  • a carrier for example, denoted as c
  • there may be used to separate the The guardband (guardband, or "intra-cell guardband", intra-cell guardband) of each RB set is, for example, recorded as Among them, for The lowest numbered CRB and the highest numbered CRB of gb j can be recorded as The number of RBs in gb j can be recorded as in can be equal to gb j can be used to separate RB set rs j and RB set rs j+1 .
  • a carrier with a bandwidth of 40MHz for a 15kHz SCS, there can be 216 consecutive RBs (for example, the CRB numbers are 0, 1,..., 215), and the 216 RBs can be divided into 3 subsets , respectively corresponding to an RB set a protective tape and a RB set
  • the set composed of RB sets can be recorded as right There can be zero or one guard band between two adjacent RB sets (rs i and rs i +1).
  • the set of protective bands can be written as right If gb j is an empty set, it can be considered that the corresponding guard band does not exist. If right gb If all are empty sets, it can be considered that there is no guard band between the RB sets of carrier c.
  • Can be configured in carrier c BWP (Bandwidth Part, bandwidth segment), for example, respectively recorded as right bwp k can support RB sets, for example, respectively recorded as Among them, for is an element in the set RS C , and The lowest numbered CRB of bwp k (e.g.
  • the number of RBs in bwp k (for example, recorded as ) can be equal to described
  • An RB set can be a continuous set of RBs, for example For convenience, where it does not cause ambiguity (for example, in operations involving only one BWP), you can recorded as Will respectively recorded as described
  • the set composed of RB sets can be recorded as
  • the set RS BWP may be equal to the set RS C , or equal to a subset of the set RS C .
  • PSD Power Spectral Density
  • OCB Organic Channel Bandwidth
  • the maximum PSD cannot exceed 10dBm/MHz.
  • the bandwidth containing 99% of the transmission power must be greater than or equal to a specific percentage (for example, 80%) of the nominal channel bandwidth (Nominal Channel Bandwidth).
  • Said restrictions, if any, may be established and enforced by regulatory authorities. In different countries or regions, restrictions on PSD and/or OCB (if any ) can be different.
  • one wireless transmission can correspond to one or more "interlaces".
  • M INT (M INT ⁇ 1) interleavings can be defined, and the corresponding interleaving set is Among them, for m ⁇ 0, 1, ..., M INT -1 ⁇ , the interleaved int m can correspond to the CRB set ⁇ m, M INT +m, 2M INT +m, 3M INT +m, ... ⁇ .
  • M INT can be a predefined or configured or preconfigured value.
  • Configuring ⁇ for the same subcarrier spacing can be defined for different purposes (eg, different types of SL transmission). For example, configure ⁇ for the same subcarrier spacing, define one M INT value for S-SS/PSBCH transmission, and define another M INT value for PSCCH/PSSCH transmission and/or PSFCH transmission. For example, configure ⁇ for the same subcarrier spacing, define a M INT value for S-SS/PSBCH transmission, and do not define interleaving for PSCCH/PSSCH transmission and/or PSFCH transmission.
  • a set of one or more RBs occupied by a radio transmission may be associated with one or more interlaces and one or more RB sets.
  • the RBs in an interlace may be called IRBs.
  • IRBs For example, in bwp k , the numbers of IRBs in interleaved int m can be recorded in order from small to large in frequency as The corresponding CRB numbers can be recorded as The corresponding PRB numbers can be recorded as
  • IRB number and the corresponding CRB number The relationship can be recorded as in can be defined as:
  • IRB number and the corresponding PRB number The relationship can be recorded as in can be defined as:
  • I MAP ⁇ int 0 , int 1 ⁇ , where the CRB corresponding to int 0 is ⁇ 10, 15, 20,... ⁇ , and the CRB corresponding to int 1 is ⁇ 11, 16, 21 ,... ⁇
  • RS MAP ⁇ rs 0 , rs 1 ⁇ , where the CRB corresponding to rs 0 is ⁇ 10, 11, 12,..., 59 ⁇ , and the CRB corresponding to rs 1 is ⁇ 66, 67, 68 ,...,115 ⁇ , then
  • the definition of can be different.
  • the starting time of a transmission may not be arbitrary, but may be limited to some discrete time points.
  • the starting time can only be located at the starting time of a time slot, or can only be located at the starting time of a specific symbol (for example, the first SL symbol) in a time slot, which greatly limits the use of non- Flexibility to perform transmissions in licensed spectrum.
  • ⁇ The unit can be seconds.
  • ⁇ The unit can be seconds.
  • ⁇ p represents the corresponding antenna port.
  • ⁇ is the corresponding subcarrier spacing configuration.
  • ⁇ Can be called CPE length (or CPE duration).
  • ⁇ The unit can be seconds.
  • the CPE length It can be defined in one of the following ways:
  • ⁇ can be equal to the symbol l 0 before symbols (the The sum of the lengths of symbol(s)immediately preceding symbol l 0 ).
  • symbols can be defined as (or, ).
  • the " “symbol” corresponds to the symbol immediately preceding symbol l 0 (the symbol immediately precedes symbol l 0 , for example, it is recorded as symbol l 0, m1 ).
  • ⁇ Can be a predefined or configured or preconfigured value. For example,
  • ⁇ It can be a value indicated by DCI (Downlink Control Information) or SCI (Sidelink Control Information), where the indicated value can be an element in a predefined or configured or preconfigured set.
  • DCI Downlink Control Information
  • SCI Seglink Control Information
  • ⁇ can be equal to in, can be equal to (or, ), or a predefined or configured or preconfigured symbol index in a subframe; Can be equal to ⁇ , or a predefined or configured or preconfigured subcarrier spacing configuration.
  • ⁇ can be equal to in, can be equal to (or, ), or a predefined or configured or preconfigured symbol index in a subframe; Can be equal to ⁇ , or a predefined or configured or preconfigured subcarrier spacing configuration.
  • ⁇ can be equal to the symbol l 0 before
  • an offset value related to channel access and/or timing advance for example, denoted as
  • minus or equal to minus For example, can be defined as (or, ), or defined as or defined as in,
  • ⁇ Can be a predefined or configured or preconfigured value. For example, 1.
  • ⁇ Can be a value indicated by DCI or SCI, where the indicated value can be an element of a predefined or configured or preconfigured set.
  • ⁇ can be satisfied (or, ) is the largest integer.
  • ⁇ can be satisfied (or, ) is the largest integer.
  • ⁇ can be satisfied the largest integer.
  • ⁇ can be satisfied the largest integer.
  • ⁇ The unit can be seconds.
  • ⁇ With related. For example, for Each value of corresponds to a unique value.
  • ⁇ Can be a predefined or configured or preconfigured value.
  • ⁇ Can be a value indicated by DCI or SCI, where the indicated value can be an element of a predefined or configured or preconfigured set.
  • ⁇ A given value can be indicated by a configured value or a value indicated in DCI or a value indicated in SCI value (e.g. ) and a given value (e.g. ), wherein the pair may be an element of a predefined or configured or preconfigured set.
  • ⁇ Can be related to ⁇ .
  • ⁇ Can be configured or indicated to be equal to (or, ),Correspondingly,
  • a dynamic permission scheduled transfer is a predefined value independent of ⁇ , or a configured or preconfigured value.
  • a configuration permission schedule for the transmission of a configuration permission schedule,
  • said transmission of all possible value (also known as “the transmission all allowed The set of values ”) can be recorded as Among them, the set The largest element in can be recorded as
  • transmission can correspond to an upper bound (e.g. called the transmission The "CPE upper bound", for example, is recorded as ).
  • CPE upper bound for example, is recorded as .
  • Another example, can be a larger than the set The value of any element in .
  • It can be related to l 0 , or it can be independent of l 0 .
  • the definition of can be different. For example, for a dynamic permission scheduled transfer, (or, ). For another example, for the transmission of a configuration permission schedule, (or, ).
  • Embodiment 1 of the present invention The method executed by the user equipment according to Embodiment 1 of the present invention will be described below with reference to FIG. 1 .
  • Figure 1 shows a flow chart corresponding to a method executed by user equipment according to Embodiment 1 of the present invention.
  • the steps performed by the user equipment UE include: step S101 and step S103.
  • step S101 information related to a side travel grant (SL grant) is obtained and/or determined.
  • the lateral license may be a lateral dynamic license (SL dynamic license). grant), or a side row configured grant type 2 (SL configured grant type 2), or a side row configured grant type 1 (SL configured grant type 1).
  • sidelink dynamic permission or sidelink configuration permission type 2 can be obtained by monitoring and/or detecting and/or receiving PDCCH (Physical Downlink Control Channel). to the DCI carried in the PDCCH, and determine information related to the sidelink grant according to the indication in the DCI and, optionally, other predefined or configured or preconfigured information.
  • the DCI can be used to indicate the side row dynamic permission; for the side row configuration permission type 2, the DCI can be used to activate the side row configuration permission.
  • information related to the sidelink permission can be determined through the values of one or more configured or preconfigured high-level parameters.
  • the information related to the side-link permission may include information of a resource pool (for example, denoted as rpu ).
  • the index of the resource pool rp u may be indicated by the DCI (for example, indicated by the "resource pool index" (Resource pool index) field in the DCI);
  • the index of the resource pool rpu can be a configured or preconfigured value.
  • the subcarrier spacing configuration of the sidelink corresponding to the resource pool rp u may be recorded as ⁇ SL , where the ⁇ SL may be configured in the SL BWP where the resource pool rp u is located.
  • the subcarrier spacing configuration of the downlink where the PDCCH carrying the DCI is located can be recorded as ⁇ DL , where the ⁇ DL can be in the corresponding part of the downlink.
  • DL downlink, also known as "downlink" is configured in BWP.
  • the DCI may correspond to a DCI format used to schedule one or more SL transmissions (eg, one or more PSCCH/PSSCH transmissions), for example, DCI format 3_0.
  • the side row permission may indicate NSA side row allocations (for example, in chronological order, respectively recorded as ), where N SA may satisfy 1 ⁇ N SA ⁇ N MAX, SA , where N MAX, SA may be a predefined or configured or preconfigured value, or indicated in the DCI.
  • the side row allocation SA i may correspond to an allocated resource (or called "time-frequency resource", for example, recorded as Res i ).
  • the resource Res i can be used for a PSCCH/PSSCH transmission (for example, denoted as SL transmission SL i ).
  • the PSCCH and PSSCH in the SL i may be recorded as PSCCH i and PSSCH i respectively.
  • the first stage ( 1st -stage) SCI carried in the PSCCH i may be recorded as SCI i,1 . in,
  • the resource Res i may be a resource in the resource pool rp u .
  • the PSSCH i can be used to carry one TB (Transport Block).
  • the PSSCH i may be used for initial transmission of the TB or for retransmission of the TB.
  • the resource may be indicated by one or more fields in the SCI i,1
  • N SA 2
  • Res 0 and Res 1 are indicated in SCI 0,1
  • Res 1 is indicated in SCI 1,1
  • N SA 3, Res 0
  • Res 1 and Res 2 are indicated in SCI 0,1
  • Res 1 and Res 2 are indicated in SCI 1,1
  • Res 2 is indicated in SCI 2,1 .
  • the one or more fields may include "frequency resource allocation" (frequency resource assignment field and "time resource assignment" field).
  • the side row allocation SA i may include the DM-RS of the PSSCH i .
  • the side row allocation SA i may include the DM-RS of the PSCCH i .
  • the side row allocation SA i may include duplicated symbols (duplicated symbols, for example, symbols in the PSSCH i ).
  • the side row allocation SA i may include repeated symbols in the PSCCH i (e.g. symbols ).
  • the PSSCH i may include corresponding DM-RS.
  • the PSSCH i may include repeated symbols (e.g. symbols ).
  • the PSCCH i may include corresponding DM-RS.
  • the PSCCH i may include repeated symbols (e.g. symbols ).
  • the "time slot where the SA i is located", "the time slot where the SL i is located” and “the time slot where the Res i is located” may be the same time slot.
  • the PSSCH 0 can be used for the initial transmission of a TB or the retransmission of the TB; the PSSCH i (i ⁇ 1,..., N SA -1 ⁇ ) can be used for the TB retransmission.
  • N SA 2
  • PSSCH 0 is used for the initial transmission of a TB
  • PSSCH 1 is used for the retransmission of the TB
  • N SA 2
  • both PSSCH 0 and PSSCH 1 are used for retransmission of the TB.
  • the Res 0 , the Res 1 , ..., the The corresponding frequency parameters (such as the starting sub-channel, such as the number of sub-channels) and time parameters (such as the time slot) may be indicated by one or more parameters in the DCI, such as Including "frequency resource allocation” and/or “time resource allocation” and/or “time gap” (Time gap) and/or "lowest index of the subchannel allocation to initial transmission” (Lowest index of the subchannel allocation to the initial transmission).
  • the corresponding frequency parameters (such as the starting subchannel, and the number of subchannels) and time parameters (such as the time slot) can be composed of one or more high-level parameters (for example, sl-TimeResourceCG-Typel; also, sl- TimeOffsetCG-Typel; also, sl-FreqResourceCG-Typel; also, sl-StartSubchannelCG-Typel) is determined.
  • high-level parameters for example, sl-TimeResourceCG-Typel; also, sl- TimeOffsetCG-Typel; also, sl-FreqResourceCG-Typel; also, sl-StartSubchannelCG-Typel
  • the value of the "frequency resource allocation" field in the SCI 0,1 may be equal to the value of the "frequency resource allocation” field in the DCI.
  • the value of the "time resource allocation" field in the SCI 0,1 may be equal to the value of the "time resource allocation” field in the DCI.
  • the time slot in which SL 0 is located (for example, denoted as T SL,0 ) may be determined by the time slot offset K SL and/or one or more other parameters, such as , T SL,0 can be that the starting time in the resource pool rp u is not earlier than the first SL time slot.
  • ⁇ T DL may be the starting time of the DL time slot in which the PDCCH carrying the DCI is located (or simply referred to as the “DL time slot carrying the DCI”).
  • ⁇ T TA may be the timing advance value corresponding to the TAG (Timing Advance Group) to which the serving cell where the DCI is received belongs.
  • the K SL can Indicated by the DCI (for example, indicated by the "time interval" field in the DCI).
  • ⁇ T slot is the duration of an SL slot.
  • the time slot in which the DCI is located and “the DL time slot in which the PDCCH carrying the DCI is located” may be the same time slot.
  • the time slot (for example, marked as T SL,i ) where the SL i (i ⁇ 1,..., N SA -1 ⁇ ) is located can be composed of
  • the indication information including the "time resource allocation" field in the DCI is determined.
  • the opposite side row is configured with grant type 1.
  • the time slot (T SL, i ) where the SL i (i ⁇ 0, 1,..., N SA -1 ⁇ ) is located can be determined by one or more high-layer parameters (for example , sl-TimeResourceCG-Typel; another example, sl-TimeOffsetCG-Typel) is determined.
  • the time slot T SL,i (i ⁇ 0, 1,..., N SA -1 ⁇ ) can also be called “the time slot where the SA i is located”, or “the time slot where the Resi is located”. time slot”.
  • the first SL symbol of the SL i (i ⁇ 0, 1,..., N SA -1 ⁇ ) (or “the first SL symbol of the SA i”, or “the first SL symbol of the SA i ”)
  • the first SL symbol ") of Res i can be recorded as the symbol in may be the index of a specific symbol in the time slot T SL,i (for example Another example ).
  • step S103 it is determined whether to transmit one or more SL transmissions of the sidelink grant schedule (eg, the SL 0 , the SL 1 , ..., and the one or more of them).
  • the sidelink grant schedule eg, the SL 0 , the SL 1 , ..., and the one or more of them.
  • the SL 0 is transmitted.
  • the sidelink can be ignored. permission (or, ignore the DCI).
  • the SA i (i ⁇ 1,..., N SA -1 ⁇ , or i ⁇ 0, 1,..., N SA -1 ⁇ ) satisfies the second PSSCH preparation condition. Then the SL i is transmitted.
  • the UE does not expect that the SA i (i ⁇ 1,..., N SA -1 ⁇ , or i ⁇ 0, 1,..., N SA -1 ⁇ ) does not satisfy Second PSSCH preparation condition situation.
  • the SL i can be skipped.
  • the first PSSCH preparation condition may include one or more of the following (for example, any combination in an "AND” or “OR” manner):
  • the side-travel permission is a side-travel dynamic permission.
  • the side row license is a side row configuration license type 2.
  • ⁇ CP starting time is in symbol.
  • ⁇ CP starting time is in SL symbol.
  • ⁇ CP starting time is in the next symbol.
  • ⁇ CP starting time is in The next SL symbol.
  • ⁇ CP starting time is in the first symbol after.
  • ⁇ CP starting time is in The first SL symbol after that.
  • ⁇ CP starting time is in The subsequent first SL symbol in the resource pool rp u .
  • ⁇ CP starting time is in The next symbol after that.
  • ⁇ CP starting time is in The next SL symbol after that.
  • ⁇ CP starting time is in The next SL symbol in the resource pool rp u thereafter.
  • ⁇ CP start time is at least greater than Night The next SL symbol.
  • the CP start time is at least Night , the next SL symbol in the resource pool rp u .
  • the unit can be seconds.
  • CPE When CPE is enabled (for example, for unlicensed spectrum, CPE is always enabled; for example, for unlicensed spectrum, CPE is enabled by configuring or preconfiguring a high-level parameter), Can be a value greater than or equal to 0.
  • CPE When CPE is enabled (for example, for unlicensed spectrum, CPE is always enabled; for example, for unlicensed spectrum, CPE is enabled by configuring or preconfiguring a high-level parameter), Can be a value greater than or equal to 0.
  • the manner may be predefined, or configured or preconfigured through one or more high-level parameters, or indicated by the DCI:
  • ⁇ It may be equal to the CPE length actually used in the channel access procedure corresponding to SL 0 (for example, including the case where the CPE length is equal to 0), where the CPE length may be a predefined or configured or preconfigured value, or in indicated in the DCI. This kind of certainty The method may be applicable to the situation where the COT corresponding to SL 0 is a COT shared by a base station or other UEs.
  • ⁇ can be equal to the CPE upper bound corresponding to the SL 0 (i.e. in is the symbol The corresponding index in the corresponding subframe). This kind of certainty The method may be applied to the situation where the base station does not support channel access on the unlicensed spectrum where the SL 0 is located, and/or shares its initialized COT with the scheduled UE (in this case, the base station may There is no way to know when the SL 0 is actually transmitted CPE length used).
  • the second PSSCH preparation condition may include the following One or more of (e.g., any combination of "AND” or "OR”):
  • the PSSCHi is used for retransmission of the corresponding TB.
  • the side-travel permission is a side-travel dynamic permission.
  • the side row license is a side row configuration license type 2.
  • the side row license is a side row configuration license type 1.
  • ⁇ CP starting time is in symbol.
  • ⁇ CP starting time is in SL symbol.
  • ⁇ CP starting time is in the next symbol.
  • ⁇ CP starting time is in The next SL symbol.
  • ⁇ CP starting time is in the first symbol after.
  • ⁇ CP starting time is in The first SL symbol after that.
  • ⁇ CP starting time is in The subsequent first SL symbol in the resource pool rp u .
  • ⁇ CP starting time is in The next symbol after that.
  • ⁇ CP starting time is in The next SL symbol after that.
  • ⁇ CP starting time is in The next SL symbol in the resource pool rp u thereafter.
  • ⁇ The CP start time is at least Night The next SL symbol.
  • the CP start time is at least Night , the next SL symbol in the resource pool rp u .
  • in can be defined as in It can be defined as the latest PSSCH transmission (for example, the TB carried by the PSSCH i ) of the same TB (that is, the TB carried by the PSSCH i). ) The end time of the last symbol of the PSFCH occasion (occasion) corresponding to.
  • the unit can be seconds.
  • CPE When CPE is enabled (for example, for unlicensed spectrum, CPE is always enabled; for example, for unlicensed spectrum, CPE is enabled by configuring or preconfiguring a high-level parameter), Can be a value greater than or equal to 0.
  • CPE When CPE is enabled (for example, for unlicensed spectrum, CPE is always enabled; for example, for unlicensed spectrum, CPE is enabled by configuring or preconfiguring a high-level parameter), Can be a value greater than or equal to 0.
  • the manner may be predefined, or configured or preconfigured through one or more high-level parameters, or indicated by the DCI:
  • ⁇ It may be equal to the CPE length actually used in the channel access process corresponding to the SLi (for example, including the case where the CPE length is equal to 0), where the CPE length may be a predefined or configured or preconfigured value, or in the as indicated in the DCI above.
  • the method may be applicable to the situation where the COT corresponding to the SL i is a COT shared by a base station or other UEs.
  • ⁇ can be equal to the CPE upper bound corresponding to the SLi (i.e. in is the symbol The corresponding index in the corresponding subframe). This kind of certainty The method may be applicable when the base station does not support channel access on the unlicensed spectrum where the SL i is located, and/or shares its initialized COT with the scheduled UE situation (in this case, the base station may not know the actual CPE length used when transmitting said SL i ).
  • Embodiment 1 of the present invention can be applied to SL resource allocation mode 1.
  • Embodiment 1 of the present invention can be applied to licensed spectrum and/or unlicensed spectrum.
  • the present invention provides a method by introducing a CPE upper bound in the PSSCH preparation time, so that the base station can perform unlicensed spectrum operations (for example, not initializing and/or sharing any COT ), schedule the SL transmission of the UE in the unlicensed spectrum without increasing the complexity of the UE implementation.
  • unlicensed spectrum operations for example, not initializing and/or sharing any COT
  • FIG. 2 is used to illustrate a user equipment that can execute the method performed by the user equipment described in detail above as a modified example of the present invention.
  • FIG. 2 is a block diagram showing user equipment UE according to the present invention.
  • the user equipment UE20 includes a processor 201 and a memory 202.
  • the processor 201 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like.
  • the memory 202 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 202 stores program instructions. When this instruction is executed by the processor 201, it can execute the above method executed by the user equipment as 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. It will be understood by those skilled in the art that the methods shown above are only exemplary, and that the above description The various embodiments 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 base stations, AMF (Access and Mobility Management Function, Access and Mobility Management Function), UPF ( User Plane Function, MME (Mobility Management Entity, Mobile Management Entity), S-GW (Serving Gateway, Service Gateway) or UE module, etc.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • MME Mobility Management Entity
  • S-GW Serving Gateway, Service Gateway
  • 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.
  • 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 phone with a certain transmit power and a certain coverage area.
  • Mobile communication data and/or control switching center including functions such as resource allocation and scheduling, data reception and transmission, etc.
  • 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 general-purpose processor or each of the circuits described above may be configured by digital circuits, or may be configured by logic circuits. Set.
  • the present invention can also use an integrated circuit obtained by utilizing the advanced technology.

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

Abstract

La présente invention concerne un procédé exécuté au moyen d'un équipement utilisateur, ainsi qu'un équipement utilisateur. Le procédé exécuté au moyen d'un équipement utilisateur consiste : à acquérir et/ou à déterminer des informations se rapportant à une autorisation de liaison latérale (SL), les informations comprenant une limite supérieure d'un élément d'équipement CPE ; à déterminer un symbole de préparation de canal PSSCH en fonction de la limite supérieure de l'équipement CPE ; et si un premier symbole de liaison SL, qui est attribué par une liaison SL correspondant à une première transmission de liaison SL qui est planifiée par l'autorisation de liaison SL, n'est pas antérieur au symbole de préparation de canal PSSCH, à exécuter la première transmission de liaison SL qui est planifiée par l'autorisation de liaison SL ; sinon, à ignorer l'autorisation de liaison SL.
PCT/CN2023/103871 2022-07-01 2023-06-29 Procédé exécuté au moyen d'un équipement utilisateur, et équipement utilisateur WO2024002244A1 (fr)

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Citations (4)

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Publication number Priority date Publication date Assignee Title
CN112119668A (zh) * 2018-05-11 2020-12-22 三星电子株式会社 在无线通信系统中确定传输时间的方法和设备
WO2021159311A1 (fr) * 2020-02-12 2021-08-19 Oppo广东移动通信有限公司 Procédé de communication, dispositif et support de stockage
WO2021236256A1 (fr) * 2020-05-22 2021-11-25 Qualcomm Incorporated Délestage de liaison latérale commandé par réseau sur une porteuse sans licence
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CN112119668A (zh) * 2018-05-11 2020-12-22 三星电子株式会社 在无线通信系统中确定传输时间的方法和设备
WO2021159311A1 (fr) * 2020-02-12 2021-08-19 Oppo广东移动通信有限公司 Procédé de communication, dispositif et support de stockage
WO2021236256A1 (fr) * 2020-05-22 2021-11-25 Qualcomm Incorporated Délestage de liaison latérale commandé par réseau sur une porteuse sans licence
WO2021237515A1 (fr) * 2020-05-27 2021-12-02 Qualcomm Incorporated Multiples points de départ associés à un temps d'occupation de canal (cot) pour communication sur liaison latérale

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