WO2022205387A1 - 边链路资源的重选方法及装置 - Google Patents

边链路资源的重选方法及装置 Download PDF

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Publication number
WO2022205387A1
WO2022205387A1 PCT/CN2021/085134 CN2021085134W WO2022205387A1 WO 2022205387 A1 WO2022205387 A1 WO 2022205387A1 CN 2021085134 W CN2021085134 W CN 2021085134W WO 2022205387 A1 WO2022205387 A1 WO 2022205387A1
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Prior art keywords
time slot
monitoring
slot set
transmission
side link
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PCT/CN2021/085134
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English (en)
French (fr)
Inventor
纪鹏宇
张健
李国荣
张磊
王昕�
Original Assignee
富士通株式会社
纪鹏宇
张健
李国荣
张磊
王昕�
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Application filed by 富士通株式会社, 纪鹏宇, 张健, 李国荣, 张磊, 王昕� filed Critical 富士通株式会社
Priority to PCT/CN2021/085134 priority Critical patent/WO2022205387A1/zh
Priority to JP2023559858A priority patent/JP2024511814A/ja
Priority to CN202180094817.8A priority patent/CN116889013A/zh
Publication of WO2022205387A1 publication Critical patent/WO2022205387A1/zh
Priority to US18/370,982 priority patent/US20240015702A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink

Definitions

  • the embodiments of the present application relate to the field of communication technologies.
  • Mode 1 In Rel-15 and previous versions of the Internet of Vehicles (V2X, Vehicle to Everything) communication, two allocation methods of side link (Sidelink) resources are supported: Mode 1 and Mode 2.
  • Mode 1 side link resources are allocated by network equipment (such as base stations) and obtained;
  • Mode 2 terminal equipment autonomously selects transmission resources, that is, transmission resources are obtained through sensing or detection-resource selection process.
  • New Radio (NR, New Radio) V2X is one of the research projects of Rel-16 standardization. Compared with Long Term Evolution (LTE, Long Term Evolution) V2X, NR V2X needs to support many new scenarios and new services (such as Remote driving, autonomous driving and fleet driving, etc.), need to meet higher technical indicators (high reliability, low latency, high data rate, etc.).
  • LTE Long Term Evolution
  • NR V2X needs to support many new scenarios and new services (such as Remote driving, autonomous driving and fleet driving, etc.), need to meet higher technical indicators (high reliability, low latency, high data rate, etc.).
  • Partial Sensing as an effective power saving mechanism, is considered as a resource selection mechanism for power saving in Rel-17.
  • embodiments of the present application provide a method and apparatus for reselection of side link resources.
  • a method for reselection of side link resources including:
  • the terminal device determines the first monitoring time slot set for partial sensing for the first candidate time slot set of the first transmission period; Two candidate time slot sets, determining a second monitoring time slot set for performing partial sensing in the second transmission period;
  • Resource reselection is performed in the second candidate time slot set in the second transmission period according to the monitoring result.
  • an apparatus for reselection of side link resources including:
  • a determining unit which determines a first monitoring time slot set for partial sensing for the first candidate time slot set of the first transmission period; and according to the first monitoring time slot set and the second transmission period of the first transmission period the second candidate time slot set, determining the second monitoring time slot set in which the second transmission period performs partial sensing;
  • a monitoring unit which performs monitoring of side link control information in the second monitoring time slot set of the second transmission period
  • a reselection unit which performs resource reselection in the second candidate time slot set of the second transmission period according to the monitoring result.
  • a method for reselection of side link resources including:
  • the terminal device shifts the first candidate time slot of the first transmission cycle backward by N current transmission cycles in the time domain, it is taken as the second candidate time slot set of the second transmission cycle, where N is the difference between the second transmission cycle and the second transmission cycle.
  • N is the difference between the second transmission cycle and the second transmission cycle. The number of cycles in the first transmission cycle interval.
  • an apparatus for reselection of side link resources including:
  • a determination unit which takes the first candidate time slot of the first transmission cycle backward by N current transmission cycles in the time domain as a second set of candidate time slots of the second transmission cycle, where N is the second transmission cycle The number of cycles between the cycle and the first transmission cycle.
  • a method for reselection of side link resources including:
  • the terminal device takes at least one time slot after the third candidate time slot set for resource primary selection as the fourth candidate time slot set for resource reselection; determines the first time slot for performing partial sensing for the third candidate time slot set. four monitoring time slot sets; and determining a fifth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the fourth monitoring time slot;
  • Resource reselection is performed in the fourth candidate time slot set for resource reselection according to the monitoring result.
  • an apparatus for reselection of side link resources including:
  • a determining unit which uses at least one time slot after the third candidate time slot set for resource primary selection as the fourth candidate time slot set for resource reselection; and performs partial sensing for the third candidate time slot set determination the fourth monitoring time slot set; and determining the fifth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the fourth monitoring time slot;
  • a monitoring unit which performs monitoring of side link control information in the fifth monitoring time slot set
  • a reselection unit which performs resource reselection in the fourth candidate time slot set for resource reselection according to the monitoring result.
  • One of the beneficial effects of the embodiments of the present application is that: according to the first monitoring time slot set of the first transmission period and the second candidate time slot set of the second transmission period, the second monitoring time slot for performing partial sensing in the second transmission period is determined Set; thus, monitoring for resource reselection can be performed on a part of the time slots, unnecessary power consumption can be avoided, and the effect of power saving can be improved.
  • At least one time slot after the candidate time slot set for resource primary selection is used as the candidate time slot set for resource reselection; thus, the number of candidate resources during resource reselection can be increased, and the possible Interfere or reduce the probability of resource collision and improve system performance.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a terminal device performing side link resource selection
  • Fig. 3 is a schematic diagram of a terminal device performing partial sensing
  • Fig. 4 is another schematic diagram of terminal equipment performing partial sensing
  • FIG. 5 is an exemplary diagram of a resource re-evaluation process
  • FIG. 6 is an example diagram of a resource preemption detection process
  • FIG. 7 is an exemplary diagram of reselection of periodic reserved resources
  • FIG. 8 is an exemplary diagram of power consumption based on periodic partial sensing
  • FIG. 9 is an example diagram of insufficient candidate resources caused by resource re-evaluation/resource preemption detection in partial perception
  • FIG. 10 is a schematic diagram of a method for reselection of side link resources according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of determining a second monitoring time slot set according to an embodiment of the present application.
  • FIG. 12 is another schematic diagram of determining a second monitoring time slot set according to an embodiment of the present application.
  • FIG. 13 is another schematic diagram of determining a second monitoring time slot set according to an embodiment of the present application.
  • FIG. 14 is another schematic diagram of determining a second monitoring time slot set according to an embodiment of the present application.
  • 15 is a schematic diagram of a method for reselection of side link resources according to an embodiment of the present application.
  • 16 is a schematic diagram of determining a sixth monitoring time slot set according to an embodiment of the present application.
  • 17 is a schematic diagram of determining a fifth monitoring time slot set according to an embodiment of the present application.
  • FIG. 18 is another schematic diagram of determining a fifth monitoring time slot set according to an embodiment of the present application.
  • FIG. 19 is a schematic diagram of an apparatus for reselection of side link resources according to an embodiment of the present application.
  • FIG. 20 is a schematic diagram of a network device according to an embodiment of the present application.
  • FIG. 21 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terms “first”, “second”, etc. are used to distinguish different elements in terms of numelation, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be referred to by these terms restricted.
  • the term “and/or” includes any and all combinations of one or more of the associated listed items.
  • the terms “comprising”, “including”, “having”, etc. refer to the presence of stated features, elements, elements or components, but do not preclude the presence or addition of one or more other features, elements, elements or components.
  • the term “communication network” or “wireless communication network” may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Long Term Evolution Enhanced (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), high-speed message access (HSPA, High-Speed Packet Access) and so on.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Enhanced
  • WCDMA Wideband Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to communication protocols at any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G , New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device.
  • Network devices may include but are not limited to the following devices: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobility management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller) and so on.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include a remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low power node (eg femeto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low power node eg femeto, pico, etc.
  • base station may include some or all of their functions, each base station may provide communication coverage for a particular geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” (UE, User Equipment) or “Terminal Equipment” (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services.
  • a terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.
  • the terminal device may include but is not limited to the following devices: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine type communication device, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
  • Cellular Phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem wireless communication device
  • handheld device machine type communication device
  • laptop computer Cordless phones, smartphones, smart watches, digital cameras, and more.
  • the terminal device may also be a machine or device that performs monitoring or measurement, such as but not limited to: Machine Type Communication (MTC, Machine Type Communication) terminals, In-vehicle communication terminals, device-to-device (D2D, Device to Device) terminals, machine-to-machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • network side or “network device side” refers to one side of the network, which may be a certain base station, and may also include one or more network devices as described above.
  • user side or “terminal side” or “terminal device side” refers to the side of the user or terminal, which may be a certain UE, and may also include one or more terminal devices as described above.
  • equipment may refer to network equipment or terminal equipment.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates the case of a terminal device and a network device as an example.
  • a communication system 100 may include a network device 101 and terminal devices 102 and 103 .
  • FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present application is not limited to this.
  • Enhanced Mobile Broadband eMBB, enhanced Mobile Broadband
  • Massive Machine Type Communication mMTC, massive Machine Type Communication
  • Ultra-Reliable and Low Latency Communication URLLC, Ultra-Reliable and Low.
  • -Latency Communication etc.
  • FIG. 1 shows that both terminal devices 102 and 103 are within the coverage of the network device 101, but the present application is not limited to this. Both terminal devices 102 , 103 may not be within the coverage of the network device 101 , or one terminal device 102 may be within the coverage of the network device 101 and the other end device 103 may be outside the coverage of the network device 101 .
  • side link transmission may be performed between the two terminal devices 102 and 103 .
  • the two terminal devices 102 and 103 can both perform side link transmission within the coverage of the network device 101 to implement V2X communication, or both can perform side link transmission outside the coverage of the network device 101 to implement V2X
  • one terminal device 102 is within the coverage of the network device 101 and another terminal device 103 is outside the coverage of the network device 101 to perform side link transmission to implement V2X communication.
  • the terminal devices 102 and/or 103 may autonomously select side link resources (ie, adopt Mode2), and in this case, the side link transmission may be independent of the network device 101, that is, the network device 101 is optional .
  • the embodiment of the present application may also combine the autonomous selection of side link resources (that is, using Mode 2) and the allocation of side link resources by the network device (that is, using Mode 1); the embodiment of the present application does not limit this.
  • a terminal device can obtain side link transmission resources through the process of sensing detection + resource selection, in which sensing can be performed continuously to obtain the resource occupancy in the resource pool. For example, the terminal device can estimate the resource occupancy in a later period of time (called a selection window) according to the resource occupancy in a previous period of time (called a perception window).
  • FIG 2 is a schematic diagram of a terminal device performing side link resource selection.
  • the terminal device passes the (n-1000)th to (n-1)th subframes or time slots (that is, the sensing window, sensing window). ) in the side link control information (SCI, Sidelink Control Information) and the detection of time-frequency resource reference signals at different locations, the resource occupancy situation of the perception window can be obtained, and then the (n+T1) to ( resource occupancy of n+T2) subframes or time slots (ie selection window, selection window).
  • SCI Sidelink Control Information
  • the physical layer of the terminal device obtains the granularity R x,y of resource selection from a higher layer (eg, a medium access control (MAC, Media Access Control) layer); the granularity may represent a subframe A series of continuous sub-channels in the network, each sub-channel includes more than one continuous physical resource block (PRB, Physical Resource Block), the number of PRB can be determined by the resource pool, the resource pool is configured or pre-configured by network equipment (such as base station).
  • Configuration The set of resources of size R x,y in all subframes in the entire selection window (hereinafter referred to as Rx ,y candidate resources) is initially defined as Set A.
  • the terminal device may exclude some candidate resources in Set A (candidate resource set) according to the result of detection within the sensing window before the data to be sent arrives. For example, in Rel-16's NR V2X, the following R x,y candidate resources need to be excluded:
  • DMRS Demodulation Reference Signal
  • PSSCH Physical Sidelink Shared Channel
  • RSRP Reference Signal Receiving Power
  • Th(prio RX ) takes the value corresponding to The high layer parameter ThresRSRP_pi_pj
  • p j is the priority of the data to be sent by the current UE indicated by the high layer
  • p i is the detected priority of other UEs indicated in the SCI;
  • the resources here refer to the candidate resources of set A in the current selection window, and the resources at the periodic positions that may be reserved in the subsequent cycles of the periodic service.
  • the RSRP threshold is increased by 3dB, from the initial Set Re-exclude in A until the number of the remaining R x,y candidate resources in Set A is greater than or equal to 20% of the initial total.
  • step 1 The above process of obtaining the resource candidate set by the physical layer may be referred to as step 1 (Step 1). Then, the physical layer of the terminal device can report Set B to the MAC layer. The following process of the MAC layer selecting resources in the resource candidate set may be referred to as step 2 (Step2).
  • the MAC layer randomly selects in Set B, selects a candidate resource and generates a grant for this transmission.
  • select a modulation and coding scheme MCS, Modulation and Coding Scheme
  • the MAC layer is configured for retransmission before resource selection, for example, the number of times of transmission is 2, after the MAC layer selects a resource, it will then use the remaining available resource set in the time domain range that can be indicated by the initial transmission SCI, such as ([- 15, 15]) but does not include the set of other resources in the subframe where the selected resource is located, another resource is randomly selected and another grant is generated, and an MCS is selected among the indicated resources for data retransmission.
  • the first resource in time is used to send the initial transmission data
  • the later resource in time is used to send the retransmitted data. If there is no such available resource, the current transmission does not support retransmission, that is, the number of transmissions becomes 1.
  • terminal equipment can support the resource selection mechanism of Partial Sensing.
  • FIG. 3 is a schematic diagram of partial sensing performed by a terminal device.
  • Y subframes may be selected in the corresponding selection window, and transmission resources may be selected from candidate resources in the Y subframes.
  • Y needs to be greater than or equal to a parameter minNumCandidateSF configured by higher layers.
  • the kth bit is configured as 1 in the bitmap (bitmap) gapCandidateSensing configured by the high layer
  • the perception window is the same as the kth bit in the sensing window.
  • the subframe corresponding to the bit needs to be monitored. To put it simply, only the subframes in the corresponding selection window can be selected as subframes in the Y subframe sets for some subframes that are monitored in the sensing window.
  • this type of partial sensing can be defined as periodic-based partial sensing.
  • the Physical Sidelink Control Channel (PSCCH) is detected in the monitoring time slot corresponding to the selected candidate time slot, that is, the corresponding first-level side link is detected.
  • Control information (1 st stage SCI) to obtain the resource occupancy of other terminal devices.
  • P reserve is the set of corresponding period values that need to be monitored for a candidate time slot when the terminal device performs period-based partial sensing (the value after being converted into a logical time slot), which may be the full set or subset of the candidate period set configured by sl-ResourceReservePeriodList.
  • the parameter sl-ResourceReservePeriodList contained in the resource pool (resource pool) configures the candidate period value of the period reservation allowed by the resource pool.
  • k is the number of cycles between the candidate time slot and the corresponding monitoring time slot to be monitored. For the selection of the k value, the closer to the time n when the resource selection occurs, or the closer to the first time slot y0 in the Y candidate time slots, the more reliable the obtained sensing result.
  • the indicated reserved period is P reserve
  • RSRP Reference Signal Received Power
  • Step 2 after the terminal device selects (Step 2) one or more transmission resources corresponding to the current transport block (TB) in the candidate set through the MAC layer, it also needs to perform resource re-evaluation. (re-evaluation) process and/or resource pre-emption (pre-emption) detection process, as well as judging the priority of side link transmission, so as to decide whether to re-select the resource that has been selected. This is mainly to eliminate possible interference caused by aperiodic services or short-period services.
  • the resources reserved for this SCI (excluding the current transmission resources in the same time slot as the PSCCH where the SCI is located, but The subsequent resources reserved by the SCI, these resources have not been indicated or reserved by the SCI) are re-evaluated to determine whether the reserved resources overlap with the resources occupied by other terminal equipment after a period of time and the measured RSRP The value is greater than the corresponding threshold.
  • the resource re-evaluation process is based on the physical layer obtaining the candidate resource set (Step 1). If a resource is no longer in the candidate resource set reported through the resource re-evaluation process, the resource needs to be re-selected.
  • FIG. 5 is an example diagram of a resource re-evaluation process.
  • m1, m2 and m3 are three resources in multiple transmissions of a TB, and m2 and m3 are reserved in the m1 indication, then at the time of T3 time before m1 is sent, it is necessary to compare m1, m2 Re-evaluate with m3, and if there is a resource (assuming m2) that is not in the candidate resource set after resource re-evaluation, trigger resource reselection to m2.
  • the resource preemption detection is performed on a resource that has been reserved by the SCI instruction to determine whether the reserved resource overlaps with the resources occupied by other terminal equipment after a period of time, and the measured The RSRP value is greater than the corresponding threshold, and the priority indicated in the SCI corresponding to the resources occupied by other terminal devices is higher than the priority of the currently pending data.
  • the resource preemption detection process is performed based on the physical layer obtaining the candidate resource set (Step 1). If a resource is no longer in the candidate resource set reported through the resource preemption detection process, and the priority indicated in the SCI corresponding to the resource occupied by other terminal equipment that overlaps with it is higher than the priority of the data to be sent, the The resource is reselected.
  • FIG. 6 is an example diagram of a resource preemption detection process.
  • m1, m2 and m3 are three resources in multiple transmissions of a TB, and m2 and m3 are reserved in the m1 indication.
  • the UE finds m2 If the resource is preempted, the resource reselection of m2 can be triggered at or before the T3 time point before m2.
  • the side link transmission may not be sent by the terminal device or needs to be discarded when the corresponding priority is relatively low.
  • the reasons include but are not limited to the following situations: if the terminal device wants to send the channel/signal of LTE V2X and the channel/signal of NR V2X, and the time domain resources occupied by the transmission of the two overlap; if the terminal device wants to send/receive the LTE V2X channel/signal The channel/signal of NR V2X and the channel/signal of receiving/transmitting NR V2X, and the time domain resources occupied by the transmission/reception of the two overlap; ) and uplink (UL) transmission, and the time domain resources occupied by the transmission of the two overlap.
  • Rel-16 supports reselection of periodically reserved resources, and the triggering reasons include but are not limited to the above situations.
  • resource reselection may be triggered due to resource re-evaluation, resource preemption detection, and low-priority transmission of side links.
  • FIG. 7 is an example diagram of reselection of periodically reserved resources. As shown in FIG. 7 , for example, if pre-emption occurs on a reserved resource in a certain period, resource reselection will be triggered in the current period, and a new resource will be selected to send new data packets in the current period.
  • FIG. 8 is an example diagram of power consumption based on periodic partial sensing. As shown in Figure 8, in subsequent cycles (for example, the 2nd... If both are monitored, the power consumption will increase, resulting in unnecessary waste.
  • the terminal device needs to perform resource re-evaluation/resource preemption detection at a time point (m-T3) corresponding to a resource m.
  • m-T3 time point corresponding to a resource m.
  • FIG. 9 is an example diagram of insufficient candidate resources caused by resource re-evaluation/resource preemption detection in partial sensing.
  • the reselection of resource m is triggered at the time point m-T3, then the number of candidate time domain resources (as shown in 901 ) in the corresponding reselection window is smaller than the candidate time domain based on partial perception
  • the minimum value of resources (Y time slots) minNum CandidateSF, the corresponding time slots of the remaining resources in the reselection window have not been monitored, so these remaining resources cannot be used for data transmission. In this way, the number of candidate resources for reselection resources will be reduced, the possible interference or the probability of resource collision will increase, and the system performance will be degraded.
  • the side link is described by taking V2X as an example, but the present application is not limited to this, and can also be applied to a side link transmission scenario other than V2X.
  • the terms “side link” and “V2X” are interchangeable, the terms “PSFCH” and “side link feedback channel” are interchangeable, and the terms “PSCCH” and “ “Sidelink Control Channel” or “Sidelink Control Information” are interchangeable, as are the terms “PSSCH” and “Sidelink Data Channel” or “Sidelink Data”.
  • transmitting or receiving PSCCH can be understood as sending or receiving side link control information carried by PSCCH; sending or receiving PSSCH can be understood as sending or receiving side link data carried by PSSCH; sending or receiving PSFCH can be understood as sending or receiving side link feedback information carried by PSFCH.
  • Sidelink transmission also called sidelink transmission
  • PSCCH/PSSCH transmission or sidelink data/information transmission can be understood as PSCCH/PSSCH transmission or sidelink data/information transmission.
  • An embodiment of the present application provides a method for reselection of side link resources, which is described from a terminal device that supports periodic partial sensing.
  • the terminal device can send side link data to other terminal devices, so the terminal device needs to perform resource selection to determine the sending resource of the side link data.
  • FIG. 10 is a schematic diagram of a method for reselection of side link resources according to an embodiment of the present application. As shown in Figure 10, the method includes:
  • a terminal device determines, for a first candidate time slot set of a first transmission period, a first monitor (monitor) time slot set for partial sensing;
  • FIG. 10 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto.
  • the execution order of the various operations can be adjusted appropriately, and other operations can be added or some of the operations can be reduced.
  • Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 10 .
  • the first transmission period is the first (1st) sidelink data transmission period based on the period part perception
  • the second transmission period is the non-first (eg total PN ) based on the period part perception ) one cycle in the data transmission cycle of the side link (the ith, i is greater than 1 and less than or equal to P N ).
  • the first sending cycle is the first sending cycle of periodic sending
  • the second sending cycle is the second sending cycle of periodic sending
  • the interval (or offset) between them is one sending cycle
  • the first sending cycle is The first sending cycle of periodic sending
  • the second sending cycle is the fourth sending cycle of periodic sending
  • the interval (or offset) between them is 3 sending cycles.
  • the first set of candidate time slots is one or more candidate time slots (Y time slots) in the selection window of the first transmission cycle
  • the first set of monitoring time slots is the sensing window of the first transmission cycle
  • the corresponding relationship between the first candidate time slot set and the first monitoring time slot set may refer to the previous description.
  • determining the second monitoring time slot set for performing partial sensing in the second transmission cycle according to the first monitoring time slot set in the first transmission cycle and the second candidate time slot set in the second transmission cycle may include: according to The rule for determining the first monitoring time slot set in the first transmission cycle, determining the third monitoring time slot set corresponding to the second transmission cycle based on the second candidate time slot set in the second transmission cycle; and the third monitoring time slot set. All or part of the time slots in the second transmission cycle are used as the second monitoring time slot set for partial sensing.
  • the second candidate time slot set for reselection (Y candidate time slots in the subsequent cycle, which is different from the first candidate time slot set in the initial selection cycle) can be determined based on the cycle part according to the same rules as in the initial resource selection.
  • the sensed complete sensing pattern, the complete sensing pattern may be referred to as the third monitoring slot set.
  • the corresponding time slot is Among them, j is the index of the current cycle, and P reserve is the set of corresponding cycle values that need to be monitored for a candidate time slot when the UE performs cycle-based partial sensing (the value after being converted into a logical time slot), which may be a resource
  • the full set or subset of the candidate period set configured by the period set parameter sl-ResourceReservePeriodList that allows period reservation in the pool;
  • k is the number of periods between the candidate time slot and the corresponding time slot, and k is an integer greater than or equal to 1 .
  • the value of k may be one or more, wherein when k is multiple, it means that for a period that needs to be monitored corresponding to a selected candidate time slot, the corresponding monitoring times that need to be monitored is greater than 1.
  • the UE determines corresponding one or more values of k respectively, so as to obtain the corresponding time slot that needs to be monitored for the candidate time slot.
  • the third monitoring time slot set After the third monitoring time slot set is determined, all or part of the time slots in the third monitoring time slot set may be used as the second monitoring time slot set for performing partial sensing in the second transmission period.
  • the reduced perceptual pattern (the second set of detection slots) is determined by taking a subset from the complete perceptual pattern (the third set of monitoring slots).
  • using all or part of the time slots in the third monitoring time slot set as the second monitoring time slot set for performing partial sensing in the second transmission period includes: using the third monitoring time slot set One or more time slots located after the reference time in the time slot set are used as the second monitoring time slot set in which the second transmission period is partially sensed.
  • the reference time is at least one of the following:
  • the time slot before the side link transmission in the previous cycle of the current transmission cycle is the time slot where the processing time point before the side link transmission in the previous cycle is located; the processing time point and the side link
  • the channel sends at least the interval processing time length (T3), for example, the time point is (m-T3), where m is the time slot sent by the side link;
  • the time slot before the side link transmission in the previous cycle of the current transmission cycle is the processing time point before the side link transmission in the previous cycle and the time slot where the side link transmission in the previous cycle is located. time slots between time slots.
  • FIG. 11 is a schematic diagram of determining a second monitoring time slot set according to an embodiment of the present application.
  • the first monitoring time slot set for partial sensing including the time slot sets shown in 11011 , 11012 and 11013
  • the first candidate time slot set shown as 1101
  • the third monitoring time slot set corresponding to the second sending cycle can be determined based on the second candidate time slot set (as shown in 1102) of the second sending cycle (including the time slot sets shown at 11021, 11022 and 11023).
  • the time slot set 11021 and the time slot set 11022 are located after the reference time (as shown by the time slot m), so the time slot set 11021 and the time slot set 11022 are used as the second transmission cycle for partial sensing.
  • the set of monitoring time slots including the sets of time slots shown by 11021 and 11022
  • the set of time slots 11023 is not included in the second set of monitoring time slots because it is located before the reference time (shown as time slot m).
  • FIG. 12 is another schematic diagram of determining a second monitoring time slot set according to an embodiment of the present application.
  • the first monitoring time slot set for partial sensing including the time slot sets shown in 12011 , 12012 and 12013
  • the first candidate time slot set shown as 1201
  • the third monitoring time slot set corresponding to the second sending cycle can be determined based on the second candidate time slot set (as shown in 1202) of the second sending cycle (including the time slot sets shown at 12021, 12022 and 12023).
  • time slot set 12021 is located after the reference time (shown as time slot m), and a part of the time slots of time slot set 12022 (shown as time slot m) is also located after the reference time (shown as time slot m) , therefore, the time slot set 12021 and the time slot set 1203 are used as the second monitoring time slot set (including the time slot sets shown in 12021 and 1203) for partial sensing in the second transmission cycle; while the time slot set 12023 is located at the reference time ( As shown by time slot m), and therefore not included in the second set of monitoring time slots, another part of the time slots of timeslot set 12022 (shown as 1204) is also located before the reference time (shown as time slot m) , and is therefore not included in the second set of monitoring slots.
  • using all or part of the time slots in the third monitoring time slot set as the second monitoring time slot set for performing partial sensing in the second transmission period includes: using the third monitoring time slot set One or more time slots in the time slot set whose length of the corresponding reserved period is less than the period threshold value are used as the second monitoring time slot set in which the second transmission period is partially sensed.
  • the period threshold value includes 100ms, but the present application is not limited thereto.
  • FIG. 13 is another schematic diagram of determining a second monitoring time slot set according to an embodiment of the present application.
  • the first monitoring time slot set for partial sensing including the time slot sets shown in 13011 , 13012 and 13013
  • the first candidate time slot set shown as 1301
  • the third monitoring time slot set corresponding to the second sending cycle can be determined based on the second candidate time slot set (as shown in 1302) of the second sending cycle (including the time slot sets shown at 13021, 13022 and 13023).
  • the reservation period corresponding to the time slot set 13021 is P1, and the length is less than the period threshold (for example, 100ms), and the reservation period corresponding to the time slot set 13022 is P2, and the length is greater than or equal to the period threshold ( For example, 100ms), the reserved period corresponding to the time slot set 13023 is P3, and the length is greater than or equal to the period threshold (for example, 100ms). Therefore, the second monitoring time slot set (including the time slot set shown by 13021) that is partially sensed with the time slot set 13021 as the second transmission cycle, while the time slot sets 13022 and 13023 are not included in the second monitoring time slot set middle.
  • the second monitoring time slot set including the time slot set shown by 13021
  • using all or part of the time slots in the third monitoring time slot set as the second monitoring time slot set for performing partial sensing in the second transmission period includes: from the third monitoring time slot set One or more time slots are randomly selected from the time slot set as the second monitoring time slot set for performing partial sensing in the second transmission period.
  • one or more time slots can be randomly selected from the time slot sets 13021, 13022 and 13023, for example, the time slot set 13021 is selected; the randomly selected time slot set 13021 is used as the second transmission cycle A second set of monitoring slots for partial sensing.
  • one or more time slots before and/or after the resource reselection trigger, or one or more consecutive time slots before and/or after the first candidate time slot are used as the second transmission period
  • the second set of monitoring slots for partial sensing are used as the second transmission period The second set of monitoring slots for partial sensing.
  • FIG. 14 is another schematic diagram of determining a second monitoring time slot set according to an embodiment of the present application.
  • the first monitoring time slot set for partial sensing including the time slot sets shown in 14011 , 14012 and 14013
  • the first candidate time slot set shown as 1401
  • the third monitoring time slot set corresponding to the second sending cycle can be determined based on the second candidate time slot set (as shown in 1402) of the second sending cycle (including the time slot sets shown at 14021, 14022 and 14023).
  • the time slot sets 14021, 14022 and 14023 may not be monitored, but one or more consecutive time slots ( 1403) for monitoring, which may be called contiguous partial sensing. In this way, the interference caused by the aperiodic traffic to the current transmission can be excluded.
  • resource reselection may not need to determine Y candidate time slots, and the reselection window is not limited to Y candidates. All resources in the slot or reselection window can be used as candidate resources; and the resource selection process starts only after the continuous monitoring time ends.
  • monitoring of side link control information is not performed for the second set of candidate time slots of the second transmission period, and the reselection resources of the second transmission period are randomly selected.
  • the reselection resources are not monitored, unnecessary power consumption can be avoided, and the effect of power saving can be improved.
  • the monitoring time slot for resource reselection is schematically described above, and the candidate time slot for resource reselection is described below.
  • the terminal device shifts the first candidate time slot set of the first transmission cycle backward by N current transmission cycles in the time domain, it is used as the second candidate time slot set of the second transmission cycle, where N is The number of cycles between the second sending cycle and the first sending cycle.
  • N is the number of time slots that can be used for side link transmission within 20ms.
  • the above only schematically illustrates the conversion between time slots and milliseconds, and the related art may also be referred to for the specific content.
  • the second monitoring time slot set for partial sensing in the second transmission cycle is determined; thus, The resource reselection can be monitored in some time slots, which can avoid unnecessary power consumption and improve the effect of power saving.
  • the embodiment of the present application provides a method for retransmitting side link resources, and the same content as the embodiment of the first aspect will not be repeated.
  • the terminal device shifts the first candidate time slot of the first transmission cycle backward by N current transmission cycles in the time domain, it is used as the second candidate time slot set of the second transmission cycle, where N is the set of all candidate time slots of the second transmission cycle.
  • N is the set of all candidate time slots of the second transmission cycle. The number of cycles between the second sending cycle and the first sending cycle.
  • the terminal device determines a first set of monitor time slots for partial sensing for the first set of candidate time slots of the first transmission cycle.
  • the terminal device determines a second set of monitoring time slots for partial sensing for the second set of candidate time slots of the second transmission period; the second set of monitoring time slots in the second transmission period Monitoring the time slot set to monitor side link control information; and performing resource reselection in the second candidate time slot set of the second transmission period according to the monitoring result.
  • the first transmission period is the first sidelink data transmission period based on the period part sensing
  • the second transmission period is the non-first sidelink data transmission period based on the period part sensing one cycle in.
  • This embodiment of the present application provides a method for reselection of side link resources, which is described from a terminal device that supports partial sensing.
  • the terminal device can send side link data to other terminal devices, so the terminal device needs to perform resource selection to determine the sending resource of the side link data.
  • FIG. 15 is a schematic diagram of a method for reselection of side link resources according to an embodiment of the present application. As shown in Figure 15, the method includes:
  • the terminal device uses at least one time slot after the third candidate time slot set for resource primary selection as the fourth candidate time slot set for resource reselection;
  • FIG. 15 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto.
  • the execution order of the various operations can be adjusted appropriately, and other operations can be added or some of the operations can be reduced.
  • Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 15 .
  • resource priming and resource reselection are for one transmission cycle; but the present application is not limited thereto.
  • At least one consecutive time slot after the candidate time slot for resource preliminary selection can be used as a candidate time slot for resource reselection. That is, the resource reselection in the cycle is not limited to the initial selection of the Y candidate time slots, and the time slots after the initial selection of the Y candidate time slots can also be additionally selected as the candidate time slots for resource reselection, so as to The number of candidate resources during resource reselection can be increased.
  • the candidate timeslots for reselection are included in the set of timeslots for the selected resources of the current cycle that triggered the reselection. For example, if ty is the slot in which the preempted resource is located, then ty is also included in the set of candidate slots for reselection.
  • determining a fifth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the fourth monitoring time slot set includes: according to determining the fourth monitoring time slot set the rule of the slot set, determining the sixth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection; and using all or part of the time slots in the sixth monitoring time slot set as the A fifth monitoring slot set.
  • FIG. 16 is a schematic diagram of determining a sixth monitoring time slot set according to an embodiment of the present application.
  • the fourth monitoring time slot set (including 16011 , 16012 and 16013 ) for performing partial sensing can be determined according to the third candidate time slot set for resource preliminary selection (as shown in 1601 , including Y time slots). the set of time slots shown).
  • one or more time slots (shown as 1602) following the third set of candidate time slots (shown as 1601, including Y time slots) may be used as fourth candidates for resource reselection Time slot set; according to the rules for determining the fourth monitoring time slot set, the sixth monitoring time slot set (including the time slots shown in 16021, 16022 and 16023) corresponding to the fourth candidate time slot set (as shown in 1602) can be determined gather).
  • all or part of the time slots in the sixth monitoring time slot set may be used as the fifth monitoring time slot set for performing partial sensing.
  • a reduced perceptual pattern (the fifth set of detection slots) is determined by taking a subset from the complete perceptual pattern (the sixth set of monitoring slots).
  • using all or part of the time slots in the sixth monitoring time slot set as the fifth monitoring time slot set includes: taking one of the sixth monitoring time slot sets located after the reference time or multiple time slots as the fifth monitoring time slot set.
  • the reference time is at least one of the following:
  • the time slot before the last side link transmission sent by the current side link that triggers the reselection is the time slot where the processing time point before the last side link transmission is located; the processing time point and The last time the side link is sent at least the interval processing time length (T3);
  • the time slot before the last side link sending of the current side link that triggers reselection is the processing time point before the last side link sending and the last side link sending The time slot between the time slots in which it is located.
  • the current side link transmission and the last side link transmission are retransmission and initial transmission of the same transport block (TB) respectively; or, the current side link transmission and the last side link transmission Send the M+1th retransmission and the Mth retransmission of the same transport block (TB), respectively, where M is a positive integer.
  • using all or part of the time slots in the sixth monitoring time slot set as the fifth monitoring time slot set includes: using the corresponding reservation period in the sixth monitoring time slot set One or more time slots whose length is less than the period threshold value are used as the fifth monitoring time slot set.
  • the period threshold value includes 100ms.
  • FIG. 17 is a schematic diagram of determining a fifth monitoring time slot set according to an embodiment of the present application.
  • the fourth monitoring time slot set (including 17011 , 17012 and 17013 ) for partial sensing can be determined according to the third candidate time slot set (as shown in 1701 , including Y time slots) for resource preliminary selection the set of time slots shown).
  • one or more time slots (shown as 1702) following the third set of candidate time slots (shown as 1701, including Y time slots) may be used as the fourth candidate for resource reselection Time slot set; according to the rule for determining the fourth monitoring time slot set, the sixth monitoring time slot set (including the time slots shown in 17021, 17022 and 17023) corresponding to the fourth candidate time slot set (as shown in 1702) can be determined gather).
  • the reservation period corresponding to timeslot sets 17023 and 17022 is greater than or equal to 100ms, and the reservation period corresponding to timeslot set 17021 is less than 100ms, so timeslot set 17021 is used as the fifth monitoring timeslot set.
  • using all or part of the time slots in the sixth monitoring time slot set as the fifth monitoring time slot set includes: randomly selecting one or more time slots from the sixth monitoring time slot set The time slot is used as the fifth monitoring time slot set.
  • one or more time slots can be randomly selected from the time slot sets 17021, 17022 and 17023, for example, the time slot set 17023 is selected; therefore, the time slot set 17023 is taken as the fifth monitoring time slot set.
  • one or more time slots before and/or after the resource reselection trigger, or one or more consecutive time slots before and/or after the first candidate time slot are used as the fifth monitoring time gap set.
  • FIG. 18 is another schematic diagram of determining a fifth monitoring time slot set according to an embodiment of the present application.
  • the fourth monitoring time slot set (including 18011 , 18012 , 18013 , including 18011 , 18012 , 18013 ) for performing partial sensing can be determined according to the third candidate time slot set for resource preliminary selection (as shown in 1801 , including Y time slots). and the set of time slots shown in 18014).
  • one or more time slots after the third candidate time slot set (shown as 1801, including Y time slots) may be used as the fourth candidate for resource reselection Time slot set; according to the rules for determining the fourth monitoring time slot set, the sixth monitoring time slot set (including the time slots shown in 18021, 18022 and 18023) corresponding to the fourth candidate time slot set (as shown in 1802) can be determined gather).
  • the time slot sets 18021, 18022 and 18023 may not be monitored, but one or more consecutive time slots ( 1803) for monitoring, which may be called contiguous partial sensing. In this way, the interference caused by the aperiodic traffic to the current transmission can be excluded.
  • FIG. 18 only exemplarily shows the fifth monitoring time slot set, and takes the consecutive time slots after the Y candidate time slots as an example for description, but the present application is not limited to this.
  • the monitoring of consecutive time slots can also be performed before or after other time points, and these consecutive time slots are used as the fifth monitoring time slot set.
  • resource selection is performed within the monitored time slot window, and the time slot window may include Y candidate time slots, or may include time slots after the Y candidate time slots.
  • resource reselection may not need to determine Y candidate time slots, and all resources in the reselection window can be used as candidates. resources; and the resource selection process starts only after a period of continuous monitoring time has elapsed.
  • side link control information is not monitored for the fourth candidate time slot set, and reselection resources corresponding to the fourth candidate time slot set are randomly selected.
  • the reselection resources are not monitored, unnecessary power consumption can be avoided, and the effect of power saving can be improved.
  • At least one time slot after the candidate time slot set for resource primary selection is used as the candidate time slot set for resource reselection; thus, the number of resources to be selected during resource reselection can be increased, Reduce possible interference or reduce the probability of resource collision, and improve system performance.
  • An embodiment of the present application provides an apparatus for reselection of side link resources.
  • the apparatus may be, for example, a terminal device, or may be one or some components or components configured in the terminal device, and the same contents as those of the first and second aspects will not be repeated.
  • FIG. 19 is a schematic diagram of an apparatus for reselection of side link resources according to an embodiment of the present application.
  • the apparatus 1900 for reselection of side link resources includes: a determination unit 1901 , a monitoring unit 1902 and a reselection unit 1903 .
  • the determining unit 1901 determines a first monitoring time slot set for partial sensing for the first candidate time slot set of the first transmission cycle; and according to the first monitoring time slot set of the first transmission cycle and the second candidate time slot set of the second transmission cycle, to determine the second monitoring time slot set for partial sensing in the second transmission cycle; the monitoring unit 1902 determines the second monitoring time slot set of the second transmission cycle in the second monitoring time slot set monitoring the side link control information; and the reselection unit 1903 performs resource reselection in the second candidate time slot set in the second transmission period according to the monitoring result.
  • the first transmission period is the first sidelink data transmission period based on the period part sensing
  • the second transmission period is the non-first sidelink data transmission period based on the period part sensing
  • the determining unit 1901 is configured to: determine the first monitoring time slot set based on the second candidate time slot set of the second sending cycle according to the rule for determining the first monitoring time slot set in the first sending cycle A third monitoring time slot set corresponding to two transmission periods; and the second monitoring time slot set for performing partial sensing by using all or part of the time slots in the third monitoring time slot set as the second transmission period.
  • the determining unit 1901 is configured to: use one or more time slots located after the reference time in the third monitoring time slot set as the second monitoring time for performing partial sensing of the second transmission period gap set.
  • the reference time is at least one of the following:
  • the time slot before the side link transmission in the previous cycle of the current transmission cycle is the time slot at the processing time point before the side link transmission in the previous cycle, the processing time point and the side link
  • the channel sends at least the interval processing time length
  • the time slot before the side link transmission in the previous cycle of the current transmission cycle is the processing time point before the side link transmission in the previous cycle and the time slot where the side link transmission in the previous cycle is located. time slots between time slots.
  • the determining unit 1901 is configured to: use one or more time slots whose lengths of the corresponding reserved periods in the third monitoring time slot set are smaller than a period threshold value as part of the second transmission period The sensed second set of monitoring time slots.
  • the determining unit 1901 is configured to: randomly select one or more time slots from the third monitoring time slot set as the second monitoring time slot set for performing partial sensing in the second transmission period.
  • the determining unit 1901 is configured to: use one or more time slots before and/or after the resource reselection trigger, or one or more consecutive time slots before and/or after the first candidate time slot as The second set of monitoring time slots in which the second transmission period performs partial sensing.
  • the determining unit 1901 is further configured to: use the first candidate time slot set of the first transmission cycle as the second transmission cycle after being shifted backward by N current transmission cycles in the time domain The second candidate time slot set of , wherein N is the number of cycles between the second transmission cycle and the first transmission cycle.
  • the reselection unit 1903 is further configured to: not monitor side link control information for the second candidate time slot set of the second transmission period, and reselection resources of the second transmission period was randomly selected.
  • the determining unit 1901 shifts the first candidate time slot of the first transmission cycle backward by N current transmission cycles in the time domain, and sets it as the second set of candidate time slots of the second transmission cycle, where N is The number of cycles between the second sending cycle and the first sending cycle.
  • the determining unit 1901 is further configured to: determine a first monitoring time slot set for partial sensing for the first candidate time slot set of the first transmission period; be the second candidate time slot set of the second transmission period The set of time slots determines a second set of monitoring time slots for partial sensing.
  • the monitoring unit 1902 performs monitoring of the side link control information in the second monitoring time slot set of the second transmission period; and the reselection unit 1903 performs monitoring of the side link control information in the second transmission period according to the monitoring result.
  • the second candidate time slot set is subjected to resource reselection.
  • the first transmission period is the first sidelink data transmission period based on the period part sensing
  • the second transmission period is the non-first sidelink data transmission period based on the period part sensing
  • the determining unit 1901 uses at least one time slot after the third candidate time slot set for resource primary selection as the fourth candidate time slot set for resource reselection; the third candidate time slot The set determines a fourth monitoring time slot set for partial sensing; and determines a fifth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the fourth monitoring time slot; monitoring unit 1902 Monitor the side link control information in the fifth monitoring time slot set; and the reselection unit 1903 performs resource reselection in the fourth candidate time slot set for resource reselection according to the monitoring result.
  • the determining unit 1901 is configured to: determine a sixth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the rule for determining the fourth monitoring time slot set; and taking all or part of the time slots in the sixth monitoring time slot set as the fifth monitoring time slot set.
  • the determining unit 1901 is configured to: use one or more time slots located after the reference time in the sixth monitoring time slot set as the fifth monitoring time slot set, and/or use the One or more time slots in the sixth monitoring time slot set whose length of the corresponding reserved period is less than the period threshold value are used as the fifth monitoring time slot set, and/or, from the sixth monitoring time slot set One or more time slots are randomly selected as the fifth monitoring time slot set.
  • the reference time is at least one of the following:
  • the time slot before the last side link transmission sent by the current side link that triggers the reselection is the time slot where the processing time point before the last side link transmission is located; the processing time point and The last time the side link is sent at least the interval processing time length;
  • the time slot before the last side link sending of the current side link that triggers reselection, the time slot is the processing time before the last side link sending and the place where the last side link sending the time slots between the time slots;
  • the current sidelink transmission and the last sidelink transmission are retransmissions and initial transmissions of the same transport block (TB), respectively; or, the current sidelink transmission and the last transmission A side link transmission is the M+1th retransmission and the Mth retransmission of the same transport block (TB), respectively, where M is a positive integer.
  • the determining unit 1901 is further configured to: one or more time slots before and/or after the resource reselection trigger, or one or more consecutive time slots before and/or after the first candidate time slot as the fifth monitoring time slot set.
  • the reselection unit 1903 is further configured to: not monitor the side link control information for the fourth candidate time slot set, and the reselection resources corresponding to the fourth candidate time slot set are randomly selected.
  • the apparatus 1900 for reselection of side link resources may further include other components or modules, and for the specific contents of these components or modules, reference may be made to the related art.
  • FIG. 19 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of this application does not limit this.
  • the second monitoring time slot set for partial sensing in the second transmission cycle is determined; thus, The resource reselection can be monitored in some time slots, which can avoid unnecessary power consumption and improve the effect of power saving.
  • At least one time slot after the candidate time slot set for resource primary selection is used as the candidate time slot set for resource reselection; thus, the number of resources to be selected during resource reselection can be increased, and possible interference can be reduced Or reduce the probability of resource collision and improve system performance.
  • An embodiment of the present application further provides a communication system, and reference may be made to FIG. 1 , and the same content as the embodiments of the first aspect to the fourth aspect will not be repeated.
  • the communication system 100 may include at least:
  • a terminal device which determines a first monitoring (monitor) time slot set for partial sensing for the first candidate time slot set of the first transmission period; according to the first monitoring time slot set and the second The second candidate time slot set of the transmission period is determined, and the second monitoring time slot set for partial sensing is determined in the second transmission period; the side link control information is carried out in the second monitoring time slot set of the second transmission period monitoring; and performing resource reselection in the second candidate time slot set of the second transmission period according to the monitoring result.
  • monitoring monitoring
  • the communication system 100 may include at least:
  • the terminal device after shifting the first candidate time slot of the first transmission cycle backward by N current transmission cycles in the time domain, as the second candidate time slot set of the second transmission cycle, where N is the second candidate time slot set of the second transmission cycle The number of cycles between the sending cycle and the first sending cycle.
  • the communication system 100 may include at least:
  • a terminal device which uses at least one time slot after the third candidate time slot set for resource primary selection as the fourth candidate time slot set for resource reselection; determines performing partial sensing for the third candidate time slot set the fourth monitoring time slot set; determine the fifth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the fourth monitoring time slot; in the fifth monitoring time slot set monitoring the side link control information; and performing resource reselection in the fourth candidate time slot set for resource reselection according to the monitoring result.
  • the embodiment of the present application also provides a network device, which may be, for example, a base station, but the present application is not limited to this, and may also be other network devices.
  • a network device which may be, for example, a base station, but the present application is not limited to this, and may also be other network devices.
  • FIG. 20 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the network device 2000 may include: a processor 2010 (eg, a central processing unit CPU) and a memory 2020 ; the memory 2020 is coupled to the processor 2010 .
  • the memory 2020 can store various data; in addition, a program 2030 for information processing is also stored, and the program 2030 is executed under the control of the processor 2010 .
  • the network device 2000 may further include: a transceiver 2040, an antenna 2050, etc.; wherein, the functions of the above components are similar to those in the prior art, and details are not repeated here. It is worth noting that the network device 2000 does not necessarily include all the components shown in FIG. 20 ; in addition, the network device 2000 may also include components not shown in FIG. 20 , and reference may be made to the prior art.
  • the embodiment of the present application also provides a terminal device, but the present application is not limited to this, and may also be other devices.
  • FIG. 21 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 2100 may include a processor 2110 and a memory 2120 ; the memory 2120 stores data and programs, and is coupled to the processor 2110 .
  • this figure is exemplary; other types of structures may be used in addition to or in place of this structure to implement telecommunication functions or other functions.
  • the processor 2110 may be configured to execute a program to implement the method for reselection of side link resources as described in the embodiments of the first aspect.
  • the processor 2110 may be configured to perform the following control: determine a first set of monitor time slots for partial sensing for a first set of candidate time slots of the first transmission cycle; the first monitoring time slot set and the second candidate time slot set of the second transmission period, determine the second monitoring time slot set for performing partial sensing in the second transmission period; the second monitoring time slot set in the second transmission period monitoring the side link control information on the time slot set; and performing resource reselection in the second candidate time slot set in the second transmission period according to the monitoring result.
  • the processor 2110 may be configured to execute a program to implement the method for reselection of side link resources according to the embodiments of the second aspect.
  • the processor 2110 may be configured to perform the following control: after the first candidate time slot of the first transmission cycle is shifted backward by N current transmission cycles in the time domain, the second candidate time slot of the second transmission cycle is used as the second candidate time slot of the second transmission cycle. set, where N is the number of cycles between the second sending cycle and the first sending cycle.
  • the processor 2110 may be configured to execute a program to implement the method for reselection of side link resources according to the embodiments of the third aspect.
  • the processor 2110 may be configured to perform the following control: use at least one time slot after the third candidate time slot set for resource primary selection as the fourth candidate time slot set for resource reselection; Three candidate time slot sets determine a fourth monitoring time slot set for partial sensing; determine a fifth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the fourth monitoring time slot; Perform monitoring of side link control information in the fifth monitoring time slot set; and perform resource reselection in the fourth candidate time slot set for resource reselection according to the monitoring result.
  • the terminal device 2100 may further include: a communication module 2130 , an input unit 2140 , a display 2150 , and a power supply 2160 .
  • the functions of the above components are similar to those in the prior art, and details are not repeated here. It is worth noting that the terminal device 2100 does not necessarily include all the components shown in FIG. 21, and the above components are not required; in addition, the terminal device 2100 may also include components not shown in FIG. There is technology.
  • the embodiments of the present application further provide a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to perform the re-evaluation of side link resources according to the embodiments of the first to third aspects. Choose method.
  • Embodiments of the present application further provide a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method for reselection of side link resources described in the embodiments of the first to third aspects.
  • the apparatuses and methods above in the present application may be implemented by hardware, or may be implemented by hardware combined with software.
  • the present application relates to a computer-readable program that, when executed by logic components, enables the logic components to implement the above-described apparatus or constituent components, or causes the logic components to implement the above-described various methods or steps.
  • the present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • the method/apparatus described in conjunction with the embodiments of this application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams shown in the figures and/or one or more combinations of the functional block diagrams may correspond to either software modules or hardware modules of the computer program flow.
  • These software modules may respectively correspond to the various steps shown in the figure.
  • These hardware modules can be implemented by, for example, solidifying these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • a software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor, such that the processor can read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • the functional blocks and/or one or more combinations of the functional blocks described in the figures can be implemented as a general-purpose processor, a digital signal processor (DSP) for performing the functions described in this application ), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof.
  • DSP digital signal processor
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described with respect to the figures can also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a method for reselection of side link resources comprising:
  • the terminal device determines, for the first candidate time slot set of the first transmission period, a first monitoring (monitor) time slot set for partial sensing;
  • Resource reselection is performed in the second candidate time slot set in the second transmission period according to the monitoring result.
  • Supplement 2 The method according to Supplement 1, wherein the first transmission period is the first sidelink data transmission period sensed based on the period part, and the second transmission period is the period part sensed based on the first side link data transmission period A cycle that is not the first side link data transmission cycle.
  • Supplement 3 The method according to Supplement 1 or 2, wherein the second set of monitoring time slots of the first transmission cycle and the second set of candidate time slots of the second transmission cycle are determined according to the first set of monitoring time slots of the first transmission cycle
  • the second set of monitoring time slots in which partial sensing is performed in the transmission period including:
  • a third monitoring time slot set corresponding to the second sending cycle is determined based on the second candidate time slot set of the second sending cycle ;as well as
  • Supplement 4 The method according to Supplement 3, wherein all or part of the time slots in the third monitoring time slot set are used as the second monitoring time slot set for performing partial sensing in the second transmission period ,include:
  • One or more time slots located after the reference time in the third monitoring time slot set are used as the second monitoring time slot set for performing partial sensing in the second transmission period.
  • Supplement 5 The method according to Supplement 4, wherein the reference time is at least one of the following:
  • the time slot before the side link transmission in the previous cycle of the current transmission cycle is the time slot at the processing time point before the side link transmission in the previous cycle, the processing time point and the side link
  • the channel sends at least the interval processing time length (T3);
  • the time slot before the side link transmission in the previous cycle of the current transmission cycle is the processing time point before the side link transmission in the previous cycle and the time slot where the side link transmission in the previous cycle is located. time slots between time slots.
  • Supplement 6 The method according to any one of Supplementary Notes 3 to 5, wherein all or part of the time slots in the third monitoring time slot set are used as the second transmission period for performing partial sensing.
  • Two sets of monitoring time slots including:
  • One or more time slots in the third monitoring time slot set whose corresponding reserved period lengths are smaller than a period threshold value are used as the second monitoring time slot set for performing partial sensing of the second transmission period.
  • Supplement 8 The method according to any one of Supplementary Notes 3 to 7, wherein all or part of the time slots in the third monitoring time slot set are used as the second transmission period for performing partial sensing.
  • Two sets of monitoring time slots including:
  • One or more time slots are randomly selected from the third monitoring time slot set as the second monitoring time slot set for performing partial sensing in the second transmission period.
  • Supplement 9 The method according to any one of Supplementary Notes 1 to 8, wherein the method further comprises:
  • Supplement 10 The method according to any one of Supplements 1 to 9, wherein the method further comprises:
  • the first candidate time slot set of the first transmission cycle is shifted backward by N current transmission cycles in the time domain, it is taken as the second candidate time slot set of the second transmission cycle, where N is The number of cycles between the second sending cycle and the first sending cycle.
  • Supplement 11 The method according to any one of Supplementary Notes 1 to 10, wherein the method further comprises:
  • a method for reselection of side link resources comprising:
  • the terminal device shifts the first candidate time slot of the first transmission cycle backward by N current transmission cycles in the time domain, it is taken as the second candidate time slot set of the second transmission cycle, where N is the difference between the second transmission cycle and the second transmission cycle.
  • N is the difference between the second transmission cycle and the second transmission cycle. The number of cycles in the first transmission cycle interval.
  • the terminal device determines, for the first candidate time slot set of the first transmission period, a first monitor time slot set for partial sensing.
  • Supplement 14 The method according to Supplement 12 or 13, wherein the method further comprises:
  • Resource reselection is performed in the second candidate time slot set in the second transmission period according to the monitoring result.
  • Supplement 15 The method according to any one of Supplements 12 to 14, wherein the first transmission period is the first side link data transmission period sensed based on the period portion, and the second transmission period is the A cycle in the transmission cycle of non-first sidelink data based on the cycle part perception.
  • a method for reselection of side link resources comprising:
  • the terminal device uses at least one time slot after the third candidate time slot set for resource primary selection as the fourth candidate time slot set for resource reselection;
  • Resource reselection is performed in the fourth candidate time slot set for resource reselection according to the monitoring result.
  • Supplement 17 The method according to Supplement 16, wherein determining a fifth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the fourth monitoring time slot set, comprising: :
  • All or part of the time slots in the sixth monitoring time slot set is used as the fifth monitoring time slot set.
  • Supplement 18 The method according to Supplement 17, wherein using all or part of the time slots in the sixth monitoring time slot set as the fifth monitoring time slot set, comprising:
  • One or more time slots located after the reference time in the sixth monitoring time slot set are used as the fifth monitoring time slot set.
  • Supplement 19 The method according to Supplement 18, wherein the reference time is at least one of the following:
  • the time slot before the last side link transmission sent by the current side link that triggers the reselection is the time slot where the processing time point before the last side link transmission is located, and the processing time point and The last time the side link is sent at least the interval processing time length (T3);
  • the time slot before the last side link sending of the current side link that triggers reselection is the processing time point before the last side link sending and the last side link sending The time slot between the time slots in which it is located.
  • Supplement 20 The method according to Supplement 19, wherein the current sidelink transmission and the last sidelink transmission are retransmission and initial transmission of the same transport block (TB), respectively;
  • the current side link transmission and the last side link transmission are the M+1 th retransmission and the M th retransmission of the same transport block (TB), respectively, where M is a positive integer.
  • Supplementary Note 21 The method according to any one of Supplementary Notes 17 to 20, wherein using all or part of the time slots in the sixth monitoring time slot set as the fifth monitoring time slot set, comprising:
  • One or more time slots whose corresponding reserved period lengths in the sixth monitoring time slot set are smaller than the period threshold value are used as the fifth monitoring time slot set.
  • Supplementary note 22 The method according to supplementary note 21, wherein the period threshold value includes 100ms.
  • Supplementary Note 23 The method according to any one of Supplementary Notes 17 to 22, wherein using all or part of the time slots in the sixth monitoring time slot set as the fifth monitoring time slot set, comprising:
  • One or more time slots are randomly selected from the sixth monitoring time slot set as the fifth monitoring time slot set.
  • Supplementary Note 24 The method according to any one of Supplementary Notes 16 to 23, wherein the method further comprises:
  • One or more time slots before and/or after the resource reselection trigger, or one or more consecutive time slots before and/or after the first candidate time slot are used as the fifth monitoring time slot set.
  • Supplement 25 The method according to any one of Supplementary Notes 16 to 24, wherein the method further comprises:
  • the monitoring of the side link control information is not performed for the fourth candidate time slot set, and the reselection resources corresponding to the fourth candidate time slot set are randomly selected.
  • a terminal device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the side according to any one of Supplementary Notes 1 to 25 The method for reselection of link resources.
  • a communication system comprising:
  • a terminal device which determines a first monitoring (monitor) time slot set for partial sensing for the first candidate time slot set of the first transmission period; according to the first monitoring time slot set and the second The second candidate time slot set of the transmission period is determined, and the second monitoring time slot set for partial sensing is determined in the second transmission period; the side link control information is carried out in the second monitoring time slot set of the second transmission period monitoring; and performing resource reselection in the second candidate time slot set of the second transmission period according to the monitoring result.
  • monitoring monitoring
  • a communication system comprising:
  • the terminal device after shifting the first candidate time slot of the first transmission cycle backward by N current transmission cycles in the time domain, as the second candidate time slot set of the second transmission cycle, where N is the second candidate time slot set of the second transmission cycle The number of cycles between the sending cycle and the first sending cycle.
  • a communication system comprising:
  • a terminal device which uses at least one time slot after the third candidate time slot set for resource primary selection as the fourth candidate time slot set for resource reselection; determines performing partial sensing for the third candidate time slot set the fourth monitoring time slot set; determine the fifth monitoring time slot set corresponding to the fourth candidate time slot set for resource reselection according to the fourth monitoring time slot; in the fifth monitoring time slot set monitoring the side link control information; and performing resource reselection in the fourth candidate time slot set for resource reselection according to the monitoring result.

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Abstract

本申请实施例提供一种边链路资源的重选方法及装置。所述方法包括：为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测时隙集合；根据第一发送周期的第一监测时隙集合和第二发送周期的第二候选时隙集合，确定第二发送周期进行部分感知的第二监测时隙集合；在第二发送周期的第二监测时隙集合进行边链路控制信息的监测；以及根据监测结果在第二发送周期的第二候选时隙集合进行资源重选。

Description

边链路资源的重选方法及装置 技术领域
本申请实施例涉及通信技术领域。
背景技术
在Rel-15以及之前版本的车联网(V2X，Vehicle to Everything)通信中，支持边链路(Sidelink)资源的两种分配方式：Mode 1和Mode 2。对于Mode 1，边链路资源由网络设备(例如基站)进行分配而获得；对于Mode 2，终端设备自主地选择发送资源，即发送资源通过感知(sensing)或检测-资源选择过程获得。
另一方面，新无线(NR，New Radio)V2X是Rel-16标准化的研究项目之一，相比于长期演进(LTE，Long Term Evolution)V2X，NR V2X需要支持诸多新场景和新业务(例如远程驾驶、自动驾驶和车队行驶等)，需要满足更高的技术指标(高可靠、低时延、高数据速率等)。
Rel-17的边链路增强课题中，一个重要目标是对某些终端设备(例如手持用户设备(P-UE))节省电量。部分感知(Partial Sensing)作为有效的省电机制，被认为是Rel-17中为了省电而进行的一个资源选择机制。
应该注意，上面对技术背景的介绍只是为了方便对本申请的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本申请的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
发明人发现：对于支持基于周期部分感知的终端设备，可能会导致电量消耗增大而造成不必要的浪费；此外，对于支持部分感知的终端设备，资源重评估/资源抢占检测会引起资源重选时的候选资源不足，从而增加可能的干扰或增大资源碰撞概率。
针对上述问题的至少之一，本申请实施例提供一种边链路资源的重选方法及装置。
根据本申请实施例的一个方面，提供一种边链路资源的重选方法，包括：
终端设备为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测时隙集合；并根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；
在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及
根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
根据本申请实施例的另一个方面，提供一种边链路资源的重选装置，包括：
确定单元，其为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测时隙集合；并根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；
监测单元，其在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及
重选单元，其根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
根据本申请实施例的另一个方面，提供一种边链路资源的重选方法，包括：
终端设备将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
根据本申请实施例的另一个方面，提供一种边链路资源的重选装置，包括：
确定单元，其将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
根据本申请实施例的另一个方面，提供一种边链路资源的重选方法，包括：
终端设备将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；并根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；
在所述第五监测时隙集合进行边链路控制信息的监测；以及
根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。
根据本申请实施例的另一个方面，提供一种边链路资源的重选装置，包括：
确定单元，其将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；并根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；
监测单元，其在所述第五监测时隙集合进行边链路控制信息的监测；以及
重选单元，其根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。
本申请实施例的有益效果之一在于：根据第一发送周期的第一监测时隙集合和第二发送周期的第二候选时隙集合，确定第二发送周期进行部分感知的第二监测时隙集合；由此，可以在一部分时隙上进行针对资源重选的监测，能够避免不必要的电量消耗，提升节省电量的效果。
此外，将用于资源初选的候选时隙集合之后的至少一个时隙作为用于资源重选的候选时隙集合；由此，可以增加资源重选时的候选资源的个数，减少可能的干扰或降低资源碰撞概率，提升系统性能。
参照后文的说明和附图，详细公开了本申请的特定实施方式，指明了本申请的原理可以被采用的方式。应该理解，本申请的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本申请的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本申请实施例的通信系统的示意图；
图2是终端设备进行边链路资源选择的一示意图；
图3是终端设备进行部分感知的一示意图；
图4是终端设备进行部分感知的另一示意图；
图5是资源重评估过程的一示例图；
图6是资源抢占检测过程的一示例图；
图7是对周期预留资源进行重选的一示例图；
图8是基于周期部分感知带来的电量消耗的一示例图；
图9是部分感知中资源重评估/资源抢占检测带来的候选资源不足的一示例图；
图10是本申请实施例的边链路资源的重选方法的一示意图；
图11是本申请实施例的确定第二监测时隙集合的一示意图；
图12是本申请实施例的确定第二监测时隙集合的另一示意图；
图13是本申请实施例的确定第二监测时隙集合的另一示意图；
图14是本申请实施例的确定第二监测时隙集合的另一示意图；
图15是本申请实施例的边链路资源的重选方法的一示意图；
图16是本申请实施例的确定第六监测时隙集合的一示意图；
图17是本申请实施例的确定第五监测时隙集合的一示意图；
图18是本申请实施例的确定第五监测时隙集合的另一示意图；
图19是本申请实施例的边链路资源的重选装置的一示意图；
图20是本申请实施例的网络设备的示意图；
图21是本申请实施例的终端设备的示意图。
具体实施方式
参照附图，通过下面的说明书，本申请的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本申请的特定实施方式，其表明了其中可以采用本申请的原则的部分实施方式，应了解的是，本申请不限于所描述的实施方式，相反，本申请包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本申请实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple Access)、 高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中，术语“网络设备”例如是指通信系统中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femeto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE，Terminal Equipment或Terminal Device)例如是指通过网络设备接入通信网络并接收网络服务的设备。终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
此外，术语“网络侧”或“网络设备侧”是指网络的一侧，可以是某一基站，也可以包括如上的一个或多个网络设备。术语“用户侧”或“终端侧”或“终端设备侧”是指用户或终 端的一侧，可以是某一UE，也可以包括如上的一个或多个终端设备。本文在没有特别指出的情况下，“设备”可以指网络设备，也可以指终端设备。
以下通过示例对本申请实施例的场景进行说明，但本申请不限于此。
图1是本申请实施例的通信系统的示意图，示意性说明了以终端设备和网络设备为例的情况，如图1所示，通信系统100可以包括网络设备101和终端设备102、103。为简单起见，图1仅以两个终端设备和一个网络设备为例进行说明，但本申请实施例不限于此。
在本申请实施例中，网络设备101和终端设备102、103之间可以进行现有的业务或者未来可实施的业务发送。例如，这些业务可以包括但不限于：增强的移动宽带(eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
值得注意的是，图1示出了两个终端设备102、103均处于网络设备101的覆盖范围内，但本申请不限于此。两个终端设备102、103可以均不在网络设备101的覆盖范围内，或者一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外。
在本申请实施例中，两个终端设备102、103之间可以进行边链路发送。例如，两个终端设备102、103可以都在网络设备101的覆盖范围之内进行边链路发送以实现V2X通信，也可以都在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信，还可以一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信。
在本申请实施例中，终端设备102和/或103可以自主选择边链路资源(即采用Mode2)，在这种情况下边链路发送可以与网络设备101无关，即网络设备101是可选的。当然，本申请实施例也可以将自主选择边链路资源(即采用Mode 2)和由网络设备分配边链路资源(即采用Mode 1)结合起来；本申请实施例不对此进行限制。
在V2X中，终端设备能够通过感知检测+资源选择的过程来获得边链路发送资源，其中可以持续不断地进行感知(sensing)来获得资源池内资源的占用情况。例如，终端设备可以根据前一段时间内(称为感知窗)的资源占用情况来估计后一段时间内(称为选择窗)的资源占用情况。
图2是终端设备进行边链路资源选择的一示意图，如图2所示，终端设备例如通过 第(n-1000)至第(n-1)个子帧或时隙(即感知窗，sensing window)内的边链路控制信息(SCI，Sidelink Control Information)和对不同位置时频资源参考信号的检测，可以获得该感知窗的资源占用情况，进而可以估计出第(n+T1)至第(n+T2)个子帧或时隙(即选择窗，selection window)的资源占用情况。
例如，当有待发送的边链路数据时，终端设备的物理层从高层(例如介质访问控制(MAC，Media Access Control)层)获得资源选择的粒度R x,y；该粒度可以表示一个子帧内的一系列连续的子信道，每个子信道包括多于一个的连续物理资源块(PRB，Physical Resource Block)，PRB个数可以由资源池决定，资源池由网络设备(例如基站)配置或预配置；整个选择窗中的所有子帧内R x,y大小的资源(以下简称为R x,y候选资源)的集合被初始化定义为Set A。
终端设备可以根据在待发送数据到达之前在该感知窗内进行检测的结果，排除Set A(候选资源集合)中的部分候选资源。例如，在Rel-16的NR V2X中，以下的R x,y候选资源需要被排除：
——在时隙
Figure PCTCN2021085134-appb-000001
检测到SCI，从对应的SCI format1-A中获得了指示的预留周期P rsvp_RX和指示的对应数据的优先级prio RX；
——与检测到的SCI format 1-A对应的物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)的解调参考信号(DMRS，De-modulation Reference Signal)或物理边链路共享信道(PSSCH，Physical Sidelink Shared Channel)的DMRS(取决于资源池的配置)的参考信号接收功率(RSRP，Reference Signal Receiving Power)的测量结果大于Th(prio RX)；其中，Th(prio RX)取值为对应的高层参数ThresRSRP_pi_pj，p j是高层指示的当前UE待发送数据的优先级，p i是检测到的其他UE的SCI中指示的优先级；
——对应的SCI format 1-A指示的资源以及其可能预留的下一个周期的资源(例如对于小于100ms的短周期，可能包括多个)，与当前发送的候选集合Set A中的资源
Figure PCTCN2021085134-appb-000002
存在重叠(overlap)，j＝0,1,…,C resel-1。这里资源是指当前选择窗内的set A的候选资源，以及周期业务其后续周期可能预留的周期位置上的资源。
如果经过了上面的资源排除之后，Set A中所剩余的R x,y候选资源个数不足初始总数的X％(例如20％)，则将该RSRP门限值增大3dB，从初始的Set A中重新进行排除， 直到Set A中剩余的R x,y候选资源个数大于或等于初始总数的20％为止。
将Set A中的R x,y候选资源放入Set B，其中，Set B是一个初始为空的集合。
以上物理层获得资源候选集合的过程可以称为步骤1(Step 1)。然后，终端设备的物理层可以将Set B上报给MAC层。以下MAC层在资源候选集合中选择资源的过程可以称为步骤2(Step2)。
MAC层在Set B中进行随机选择，选择一个候选资源并生成本次发送的授权(grant)。此外，在指示的资源中选择一个调制和编码方案(MCS，Modulation and Coding Scheme)进行数据发送。
如果在资源选择之前MAC层配置了重传，例如发送次数为2，则MAC层在选择了一个资源后，再在剩余可用资源集合中、满足初传SCI可指示的时域范围例如([-15,15])但不包含已选资源所在子帧的其余资源所组成的集合内，随机选择另一个资源并生成另一个授权(grant)，在指示的资源中选择一个MCS进行数据重传。两个资源中时间上在前的一个资源用来发送初传数据，时间上在后的一个资源用来发送重传数据。如果不存在这样的可用资源，则当前发送不支持重传，即发送次数变为1。
值得注意的是，以上仅对V2X中感知检测+资源选择的过程进行了示意性说明。关于上述过程的具体内容，还可以参考3GPP TS 36.213 V15.2.0中第14.1.1.6等处的内容。
在LTE V2X中，终端设备可以支持部分感知(Partial Sensing)的资源选择机制。
图3是终端设备进行部分感知的一示意图。如图3所示，可以在对应的选择窗中选择Y个子帧，从这Y个子帧中的候选资源中选择发送资源。例如，Y需要大于或等于高层配置的一个参数minNumCandidateSF。对应的，如果在高层配置的位图(bitmap)gapCandidateSensing中第k个比特被配置为1，对于被包含在所选择的Y个子帧的集合中的一个子帧，感知窗中与该第k个比特对应的子帧需要被监测。简单来说，在感知窗中进行了监测的部分子帧，其对应的选择窗中的子帧才可以被选择为Y个子帧集合中的子帧。
在NR V2X中，可以限制在选择窗内选择的候选时隙(slot)必须是在之前对应时域位置进行了监测的时隙，由此能够排除相同资源池内其它终端设备进行周期性发送对所选择资源的干扰，保证系统可靠性能，这种类型的部分感知可以定义为基于周期部分感知(periodic-based partial sensing)。
对于执行基于周期部分感知的发送终端设备，在所选择的候选时隙对应的监测时隙 内检测物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)，即检测对应的第一级边链路控制信息(1 st stage SCI)，以获得其它终端设备的资源占用情况即可。
例如，假如一个时隙
Figure PCTCN2021085134-appb-000003
被选择且包括在候选时隙(Y个时隙)中，则终端设备需要监测对应的时隙
Figure PCTCN2021085134-appb-000004
k和P reserve的定义可以参考相关技术。P reserve是终端设备执行基于周期部分感知时一个候选时隙需要监测的对应周期值(转化为逻辑时隙后的值)的集合，可能是sl-ResourceReservePeriodList配置的候选周期集合的全集或者子集，资源池(resource pool)中包含的参数sl-ResourceReservePeriodList配置了该资源池允许的周期预留的候选周期值。k是候选时隙与对应的需要监测的监测时隙之间间隔的周期个数。对于k值的选取，离资源选择发生的时间n越近，或者离Y个候选时隙中的首个时隙y0越近，获得的感知结果越可靠。
对于
Figure PCTCN2021085134-appb-000005
中监测到的周期预留SCI(其中指示的预留周期为P reserve)，如果该SCI对应的参考信号接收功率(RSRP，Reference Signal Received Power)大于门限，该SCI指示的频域资源在k个P reserve周期后的时隙内对应资源R，则与该资源R在当前发送周期或者后续发送周期重叠(overlap)的候选资源需要在对应的时隙
Figure PCTCN2021085134-appb-000006
内被排除。
图4是终端设备进行部分感知的另一示意图。如图4所示，假设P reserve＝{P 1,P 2,P 3}。对于每个候选时隙，分别针对每个P reserve，终端设备可以确定对应的一个或多个k的值，对于图示中的各个周期值，k均被确定为1，从而获得对于该候选时隙需要监测的对应时隙。
另一方面，在Rel-16 NR V2X中，当终端设备通过MAC层在候选集合中选择(Step 2)了当前传输块(TB)对应的一次或多次发送资源之后，还需要进行资源重评估(re-evaluation)过程和/或资源抢占(pre-emption)检测过程，以及判断边链路发送的优先级，以决定是否要对已经选择的资源进行重选。这主要是为了排除非周期业务或短周期业务可能带来的干扰。
在资源重评估过程中，在每个SCI发送之前的一个时间点(定义为T3)，需要对此SCI预留的资源(不包括与SCI所在的PSCCH相同时隙的本次发送资源，而是该SCI预留的后续资源，这些资源尚未被SCI指示或预留过)进行重新评估，以确定所预留的资源在经过一段时间后，是否与其他终端设备占用的资源重叠且所测量的RSRP值大于对应门限。资源重评估过程是基于物理层获得候选资源集合(Step 1)进行的。如果一 个资源不再在经过资源重评估过程上报的候选资源集合中，则需要对该资源进行重选。
图5是资源重评估过程的一示例图。如图5所示，m1,m2和m3是一个TB多次发送中的三个资源，且m1指示中预留了m2和m3，则在m1发送之前T3时间的时间点，需要对m1,m2和m3进行重评估，如果有资源(假设为m2)不在资源重评估后的候选资源集合中，则触发对m2的资源重选。
在资源抢占检测过程中，对于一个已经被SCI指示所预留过的资源进行资源抢占检测，以确定所预留的资源在经过一段时间后，是否与其他终端设备占用的资源重叠且所测量的RSRP值大于对应门限，且其它终端设备占用的资源所对应的SCI中指示的优先级高于当前待发数据的优先级。资源抢占检测过程是基于物理层获得候选资源集合(Step1)进行的。如果一个资源不再在经过资源抢占检测过程上报的候选资源集合中、且与之重叠的其他终端设备占用的资源对应的SCI中指示的优先级高于当待发数据的优先级，则需要对该资源进行重选。
图6是资源抢占检测过程的一示例图。如图6所示，m1,m2和m3是一个TB多次发送中的三个资源，且m1指示中预留了m2和m3，在m1发送之后m2发送之前的某个时间点，UE发现m2资源被抢占，则可以在m2之前的T3时间点或之前，触发对m2的资源重选。
在Rel-16 NR V2X中，边链路发送可能在对应优先级比较低的时候，不能够被终端设备发送或者需要被丢弃。原因具体包括但不限于如下情况：如果终端设备要发送LTE V2X的信道/信号和NR V2X的信道/信号，且二者的发送所占用的时域资源重叠；如果终端设备要发送/接收LTE V2X的信道/信号和接收/发送NR V2X的信道/信号，且二者的发送/接收所占用的时域资源重叠；如果终端设备不具备在相同服务小区(serving cell)同时进行边链路(SL)和上行链路(UL)发送的能力，且二者的发送所占用的时域资源重叠。
以上示意性说明了在一个相同周期内对已选资源的重选的情况。Rel-16中支持对周期预留资源的重选，触发原因包括但不限于以上情况。对于周期预留资源，可能会由于资源重评估、资源抢占检测以及边链路低优先级发送而触发资源重选。
图7是对周期预留资源进行重选的一示例图。如图7所示，例如，如果某个周期预留资源发生了抢占(pre-emption)，会在当前周期触发资源重选，选择一个新的资源进行当前周期新传数据包的发送。
发明人发现：对于支持基于周期部分感知(periodic-based partial sensing)的终端设 备，首个周期为了保证资源选择的可靠性，必须进行完整的基于周期的部分感知。但是，如果后续周期为了可能被触发的资源重选，也采用首个发送周期进行资源选择所进行的完整的基于周期的部分感知，则可能会造成电量消耗增大，同时由于后续周期未必会触发资源重选，则这些增大的电量消耗有可能被浪费。
图8是基于周期部分感知带来的电量消耗的一示例图。如图8所示，在后续周期(例如第2个…第m个发送周期)中，有可能并不会触发资源重选，但如果仍然在候选时隙所对应的所有可能的监测时隙上均进行监测，则会造成电量消耗增大，造成不必要的浪费。
此外，对于一个周期内的资源重评估/资源抢占检测，终端设备需要在一个资源m对应的时间点(m-T3)进行资源重评估/资源抢占检测。对于支持部分感知(partial sensing)的终端设备，如果触发了资源重选，则可能会出现重选对应的选择窗覆盖的时域资源不足的问题。
图9是部分感知中资源重评估/资源抢占检测带来的候选资源不足的一示例图。如图9所示，在m-T3的时间点触发了对资源m的重选，则对应的重选窗内的候选时域资源(如901所示)个数小于基于部分感知的候选时域资源(Y个时隙)的最小值minNum CandidateSF，重选窗内的其余资源的对应时隙没进行过监测，因此这些其余资源不能被用于数据发送。这样会导致重选资源的候选资源变少，可能的干扰或资源碰撞概率增大，导致系统性能降低。
针对上述问题的至少之一，以下对本申请实施例进行进一步说明。
在本申请实施例中，以V2X为例对边链路进行说明，但本申请不限于此，还可以适用于V2X以外的边链路发送场景。在以下的说明中，在不引起混淆的情况下，术语“边链路”和“V2X”可以互换，术语“PSFCH”和“边链路反馈信道”可以互换，术语“PSCCH”和“边链路控制信道”或“边链路控制信息”可以互换，术语“PSSCH”和“边链路数据信道”或“边链路数据”也可以互换。
另外，发送(transmitting)或接收(receiving)PSCCH可以理解为发送或接收由PSCCH承载的边链路控制信息；发送或接收PSSCH可以理解为发送或接收由PSSCH承载的边链路数据；发送或接收PSFCH可以理解为发送或接收由PSFCH承载的边链路反馈信息。边链路发送(Sidelink transmission，也可称为边链路传输)可以理解为PSCCH/PSSCH发送或者边链路数据/信息发送。
第一方面的实施例
本申请实施例提供一种边链路资源的重选方法，从支持基于周期部分感知的终端设备进行说明。其中该终端设备可以向其他终端设备发送边链路数据，因此该终端设备需要进行资源选择以确定边链路数据的发送资源。
图10是本申请实施例的边链路资源的重选方法的一示意图。如图10所示，该方法包括：
1001，终端设备为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测(monitor)时隙集合；
1002，根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；
1003，在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；
1004，根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
值得注意的是，以上附图10仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图10的记载。
在一些实施例中，第一发送周期为基于周期部分感知的首个(第1个)边链路数据发送周期，第二发送周期为所述基于周期部分感知的非首个(例如共P N个)边链路数据发送周期中的一个周期(第i个，i大于1且小于或等于P N)。
例如，第一发送周期为周期发送的首个发送周期，第二发送周期为周期发送的第二个发送周期，二者之间间隔(或偏移)一个发送周期；或者，第一发送周期为周期发送的首个发送周期，第二发送周期为周期发送的第四个发送周期，二者之间间隔(或偏移)3个发送周期。
在一些实施例中，第一候选时隙集合为第一发送周期的选择窗中的一个或多个候选时隙(Y个时隙)，第一监测时隙集合为第一发送周期的感知窗中的一个或多个时隙(Y个时隙)，第一候选时隙集合和第一监测时隙集合之间的对应关系可以参考之前的描述。
在一些实施例中，根据第一发送周期的第一监测时隙集合和第二发送周期的第二候选时隙集合确定第二发送周期进行部分感知的第二监测时隙集合，可以包括：根据第一发送周期中确定第一监测时隙集合的规则，基于第二发送周期的第二候选时隙集合确定第二发送周期所对应的第三监测时隙集合；以及将第三监测时隙集合中的全部或者部分 时隙作为第二发送周期进行部分感知的第二监测时隙集合。
例如，可以按照与初始资源选择时同样的规则，对重选的第二候选时隙集合(后续周期的Y个候选时隙，与初选周期的第一候选时隙集合不同)确定基于周期部分感知的完整的感知图样(pattern)，该完整的感知图样可以称为第三监测时隙集合。
具体的，对于包含在当前周期的重选候选时隙集合中的时隙
Figure PCTCN2021085134-appb-000007
对应时隙为
Figure PCTCN2021085134-appb-000008
其中，j为当前周期的索引(index)，P reserve是UE执行基于周期部分感知时一个候选时隙需要监测的对应周期值的集合(为转化为逻辑时隙后的值)，其可能是资源池内允许进行周期预留的周期集合参数sl-ResourceReservePeriodList配置的候选周期集合的全集或者子集；k是候选时隙与对应时隙之间间隔的周期个数、且k为大于或等于1的整数。k的取值可以为一个或多个，其中k为多个时表示：对于一个选择的候选时隙对应的一个需要监测的周期，需要监测的对应监测次数大于1。对于每个候选时隙，针对每个P reserve，UE分别确定对应的一个或多个k的值，从而获得对于该候选时隙需要监测的对应时隙。
在确定第三监测时隙集合之后，可以将第三监测时隙集合中的全部或者部分时隙作为第二发送周期进行部分感知的第二监测时隙集合。例如，从完整的感知图样(第三监测时隙集合)中取子集来确定减少的(reduced)感知图样(第二检测时隙集合)。
在一些实施例中，将所述第三监测时隙集合中的全部或者部分时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合，包括：将所述第三监测时隙集合中位于参考时间之后的一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
例如，所述参考时间为如下至少之一：
当前发送周期的上一个周期中边链路发送所在的时隙；
当前发送周期的上一个周期中边链路发送之前的时隙，所述时隙为上一个周期中边链路发送之前的处理时间点所在的时隙；所述处理时间点和所述边链路发送至少间隔处理时间长度(T3)，例如该时间点为(m-T3)，其中该m为该边链路发送的时隙；
当前发送周期的上一个周期中边链路发送之前的时隙，所述时隙为上一个周期中边链路发送之前的所述处理时间点与所述上一个周期中边链路发送所在的时隙之间的时隙。
图11是本申请实施例的确定第二监测时隙集合的一示意图。如图11所示，可以根 据第一发送周期的第一候选时隙集合(如1101所示)确定进行部分感知的第一监测时隙集合(包括11011、11012和11013所示的时隙集合)；根据第一发送周期中确定第一监测时隙集合的规则，基于第二发送周期的第二候选时隙集合(如1102所示)可以确定第二发送周期所对应的第三监测时隙集合(包括11021、11022和11023所示的时隙集合)。
如图11所示，时隙集合11021和时隙集合11022位于参考时间(如时隙m所示)之后，因此将时隙集合11021和时隙集合11022作为第二发送周期进行部分感知的第二监测时隙集合(包括11021和11022所示的时隙集合)，而时隙集合11023因位于参考时间(如时隙m所示)之前，因此没有被包括在第二监测时隙集合中。
图12是本申请实施例的确定第二监测时隙集合的另一示意图。如图12所示，可以根据第一发送周期的第一候选时隙集合(如1201所示)确定进行部分感知的第一监测时隙集合(包括12011、12012和12013所示的时隙集合)；根据第一发送周期中确定第一监测时隙集合的规则，基于第二发送周期的第二候选时隙集合(如1202所示)可以确定第二发送周期所对应的第三监测时隙集合(包括12021、12022和12023所示的时隙集合)。
如图12所示，时隙集合12021位于参考时间(如时隙m所示)之后，时隙集合12022的一部分时隙(如1203所示)也位于参考时间(如时隙m所示)之后，因此将时隙集合12021和时隙集合1203作为第二发送周期进行部分感知的第二监测时隙集合(包括12021和1203所示的时隙集合)；而时隙集合12023因位于参考时间(如时隙m所示)之前，因此没有被包括在第二监测时隙集合中，时隙集合12022的另一部分时隙(如1204所示)也位于参考时间(如时隙m所示)之前，因此也没有被包括在第二监测时隙集合中。
以上示例性说明了本申请实施例的参考时间，但本申请不限于此。由此，通过仅在第二周期对应的一部分对应时隙上进行监测，可以避免不必要的电量消耗，提升节省电量的效果。
在一些实施例中，将所述第三监测时隙集合中的全部或者部分时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合，包括：将所述第三监测时隙集合中对应的预留周期的长度小于周期门限值的一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。例如，所述周期门限值包括100ms，但本申请不限于此。
图13是本申请实施例的确定第二监测时隙集合的另一示意图。如图13所示，可以 根据第一发送周期的第一候选时隙集合(如1301所示)确定进行部分感知的第一监测时隙集合(包括13011、13012和13013所示的时隙集合)；根据第一发送周期中确定第一监测时隙集合的规则，基于第二发送周期的第二候选时隙集合(如1302所示)可以确定第二发送周期所对应的第三监测时隙集合(包括13021、13022和13023所示的时隙集合)。
如图13所示，时隙集合13021对应的预留周期为P1，长度小于周期门限值(例如100ms)，时隙集合13022对应的预留周期为P2，长度大于或等于周期门限值(例如100ms)，时隙集合13023对应的预留周期为P3，长度大于或等于周期门限值(例如100ms)。因此，将时隙集合13021作为第二发送周期进行部分感知的第二监测时隙集合(包括13021所示的时隙集合)，而时隙集合13022和13023没有被包括在第二监测时隙集合中。
由此，通过仅在一部分对应时隙上进行监测，可以避免不必要的电量消耗，提升节省电量的效果。
在一些实施例中，将所述第三监测时隙集合中的全部或者部分时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合，包括：从所述第三监测时隙集合中随机选择一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
例如，仍以图13为例，可以从时隙集合13021、13022和13023中随机选择一个或多个时隙，例如选择时隙集合13021；将随机选择出的时隙集合13021作为第二发送周期进行部分感知的第二监测时隙集合。
由此，通过仅在一部分对应时隙上进行监测，可以避免不必要的电量消耗，提升节省电量的效果。
在一些实施例中，将资源重选触发之前和/或之后的一个或多个时隙，或者首个候选时隙之前和/或之后的一个或多个连续时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
图14是本申请实施例的确定第二监测时隙集合的另一示意图。如图14所示，可以根据第一发送周期的第一候选时隙集合(如1401所示)确定进行部分感知的第一监测时隙集合(包括14011、14012和14013所示的时隙集合)；根据第一发送周期中确定第一监测时隙集合的规则，基于第二发送周期的第二候选时隙集合(如1402所示)可以确定第二发送周期所对应的第三监测时隙集合(包括14021、14022和14023所示的时隙集合)。
如图14所示，可以不对时隙集合14021、14022和14023进行监测，而是在第二候选时隙集合(如1402所示)的首个候选时隙之前的一个或多个连续时隙(如1403所示)进行监测，可称为连续部分感知(contiguous partial sensing)。由此，可以排除非周期业务对当前发送产生的干扰。
再例如，如果在资源重选触发时间之后和/或之前的一个或多个连续时隙进行了监测，资源重选可以不需要确定Y个候选时隙，重选窗不限制在Y个候选时隙内或重选窗内所有资源都可以作为候选资源；并在连续监测时间结束之后才开始资源选择过程。
由此，通过仅在一部分连续时隙上进行监测，可以避免不必要的电量消耗，提升节省电量的效果。
在一些实施例中，针对所述第二发送周期的所述第二候选时隙集合不进行边链路控制信息的监测，所述第二发送周期的重选资源被随机选择。
由此，对重选资源不进行监测，可以避免不必要的电量消耗，提升节省电量的效果。
以上示意性说明了资源重选的监测时隙，以下再对资源重选的候选时隙进行说明。
在一些实施例中，终端设备将第一发送周期的第一候选时隙集合在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为第二发送周期与所述第一发送周期间隔的周期个数。
例如，可以对后续周期的Y个候选时隙进行限制，即它们是初始选择的Y个候选时隙以当前发送周期进行平移获得的。具体的，如果首个周期中的时隙
Figure PCTCN2021085134-appb-000009
被包含在所选的候选时隙集合(Y个时隙)中，对于后续周期，时隙
Figure PCTCN2021085134-appb-000010
j＝0,1,2…也被包含在对应后续周期的候选时隙集合(Y个时隙)中；其中，j是周期的索引，j＝0代表首个周期，j＝1代表第二个发送周期；P′ rsvp_TX代表当前发送的周期值转换为逻辑时隙后的时隙个数。
对于一个周期P rsvp可以将其单位由毫秒转换为逻辑时隙的P′ rsvp，如下式(1)所述：
Figure PCTCN2021085134-appb-000011
其中，N为20ms内能够被用于边链路发送的时隙的个数。以上仅示意性说明了时隙和毫秒的转换，具体内容还可以参考相关技术。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也 可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，根据第一发送周期的第一监测时隙集合和第二发送周期的第二候选时隙集合，确定第二发送周期进行部分感知的第二监测时隙集合；由此，可以在一部分时隙上针对资源重选进行监测，能够避免不必要的电量消耗，提升节省电量的效果。
第二方面的实施例
本申请实施例提供一种边链路资源的重传方法，与第一方面的实施例相同的内容不再赘述。
在一些实施例中，终端设备将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
在一些实施例中，所述终端设备为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测(monitor)时隙集合。
在一些实施例中，所述终端设备为所述第二发送周期的所述第二候选时隙集合确定进行部分感知的第二监测时隙集合；在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
在一些实施例中，所述第一发送周期为基于周期部分感知的首个边链路数据发送周期，所述第二发送周期为所述基于周期部分感知的非首个边链路数据发送周期中的一个周期。
在一些实施例中，重选的候选时隙集合包含第一发送周期的选择资源所在的时隙向后平移j个周期P的对应时隙，其中j为周期索引，j＝0,1,2…，P为发送周期。例如，如果t y是第一发送周期的选择资源所在的时隙，则t y+j*P包含在第j+1个发送周期的用于重选的候选时隙集合中，其中为j周期索引，P为发送周期。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
第三方面的实施例
本申请实施例提供一种边链路资源的重选方法，从支持部分感知的终端设备进行说 明。其中该终端设备可以向其他终端设备发送边链路数据，因此该终端设备需要进行资源选择以确定边链路数据的发送资源。
图15是本申请实施例的边链路资源的重选方法的一示意图。如图15所示，该方法包括：
1501，终端设备将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；
1502，为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；
1503，根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；
1504，在所述第五监测时隙集合进行边链路控制信息的监测；以及
1505，根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。
值得注意的是，以上附图15仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图15的记载。
在一些实施例中，资源初选和资源重选针对一个发送周期；但本申请不限于此。可以将资源初选的候选时隙之后的至少一个连续时隙作为用于资源重选的候选时隙。即，对周期内的资源重选不限于在初始选择的Y个候选时隙之内，也可以额外选择初始选择的Y个候选时隙之后的时隙，作为资源重选的候选时隙，从而可以增加资源重选时的候选资源的个数。
在一些实施例中，重选的候选时隙包含在触发重选的当前周期已选择资源的时隙集合中。例如，如果t y是已被抢占资源所在的时隙，则t y也被包含在用于重选的候选时隙集合中。
在一些实施例中，根据所述第四监测时隙集合确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合，包括：根据确定所述第四监测时隙集合的规则，确定所述用于资源重选的第四候选时隙集合所对应的第六监测时隙集合；以及将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合。
图16是本申请实施例的确定第六监测时隙集合的一示意图。如图16所示，可以根据用于资源初选的第三候选时隙集合(如1601所示，包括Y个时隙)确定进行部分感知的第四监测时隙集合(包括16011、16012和16013所示的时隙集合)。
如图16所示，可以将第三候选时隙集合(如1601所示，包括Y个时隙)之后的一个或多个时隙(如1602所示)作为用于资源重选的第四候选时隙集合；根据确定第四监测时隙集合的规则，可以确定第四候选时隙集合(如1602所示)所对应的第六监测时隙集合(包括16021、16022和16023所示的时隙集合)。
在确定第六监测时隙集合之后，可以将第六监测时隙集合中的全部或者部分时隙作为进行部分感知的第五监测时隙集合。例如，从完整的感知图样(第六监测时隙集合)中取子集来确定减少的(reduced)感知图样(第五检测时隙集合)。
在一些实施例中，将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合，包括：将所述第六监测时隙集合中位于参考时间之后的一个或多个时隙作为所述第五监测时隙集合。
例如，所述参考时间为如下至少之一：
触发重选的当前边链路发送的上一次边链路发送所在的时隙；
触发重选的当前边链路发送的上一次边链路发送之前的时隙，所述时隙为所述上一次边链路发送之前的处理时间点所在的时隙；所述处理时间点和所述上一次边链路发送至少间隔处理时间长度(T3)；
触发重选的当前边链路发送的上一次边链路发送之前的时隙，所述时隙为所述上一次边链路发送之前的所述处理时间点与所述上一次边链路发送所在的时隙之间的时隙。
其中，所述当前边链路发送和所述上一次边链路发送分别为相同传输块(TB)的重传和初传；或者，所述当前边链路发送和所述上一次边链路发送分别为相同传输块(TB)的第M+1次重传和第M次重传，M为正整数。
在一些实施例中，将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合，包括：将所述第六监测时隙集合中对应的预留周期的长度小于周期门限值的一个或多个时隙作为所述第五监测时隙集合。例如，所述周期门限值包括100ms。
图17是本申请实施例的确定第五监测时隙集合的一示意图。如图17所示，可以根据用于资源初选的第三候选时隙集合(如1701所示，包括Y个时隙)确定进行部分感知的第四监测时隙集合(包括17011、17012和17013所示的时隙集合)。
如图17所示，可以将第三候选时隙集合(如1701所示，包括Y个时隙)之后的一个或多个时隙(如1702所示)作为用于资源重选的第四候选时隙集合；根据确定第四监测时隙集合的规则，可以确定第四候选时隙集合(如1702所示)所对应的第六监测时隙集合(包括17021、17022和17023所示的时隙集合)。
如图17所示，时隙集合17023和17022对应的预留周期大于或等于100ms，时隙集合17021对应的预留周期小于100ms，因此将时隙集合17021作为第五监测时隙集合。
由此，通过仅在一部分时隙上进行监测，可以进一步避免不必要的电量消耗，提升节省电量的效果。
在一些实施例中，将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合，包括：从所述第六监测时隙集合中随机选择一个或多个时隙作为所述第五监测时隙集合。
例如，仍以图17为例，可以从时隙集合17021、17022和17023中随机选择一个或多个时隙，例如选择时隙集合17023；因此将时隙集合17023作为第五监测时隙集合。
由此，通过仅在一部分时隙上进行监测，可以进一步避免不必要的电量消耗，提升节省电量的效果。
在一些实施例中，将资源重选触发之前和/或之后的一个或多个时隙，或者首个候选时隙之前和/或之后的一个或多个连续时隙作为所述第五监测时隙集合。
图18是本申请实施例的确定第五监测时隙集合的另一示意图。如图18所示，可以根据用于资源初选的第三候选时隙集合(如1801所示，包括Y个时隙)确定进行部分感知的第四监测时隙集合(包括18011、18012、18013和18014所示的时隙集合)。
如图18所示，可以将第三候选时隙集合(如1801所示，包括Y个时隙)之后的一个或多个时隙(如1802所示)作为用于资源重选的第四候选时隙集合；根据确定第四监测时隙集合的规则，可以确定第四候选时隙集合(如1802所示)所对应的第六监测时隙集合(包括18021、18022和18023所示的时隙集合)。
如图18所示，可以不对时隙集合18021、18022和18023进行监测，而是在第四候选时隙集合(如1802所示)的首个候选时隙之前的一个或多个连续时隙(如1803所示)进行监测，可称为连续部分感知(contiguous partial sensing)。由此，可以排除非周期业务对当前发送产生的干扰。
图18仅示例性示出了第五监测时隙集合，以Y个候选时隙后的连续时隙为例进行说明，但本申请不限于此。例如也可以在其他时间点的之前或之后进行连续时隙的监测，将这些连续时隙作为第五监测时隙集合。然后在监测后的时隙窗内进行资源选择，该时隙窗可以包括Y个候选时隙，也可以包括Y个候选时隙后的时隙。
再例如，如果在资源重选触发时间之后和/或之前的一个或多个连续时隙进行了监测，资源重选可以不需要确定Y个候选时隙，重选窗内所有资源都可以作为候选资源；并在 进行一段连续监测时间结束之后才开始资源选择过程。
由此，通过仅在一部分连续时隙上进行监测，可以进一步避免不必要的电量消耗，提升节省电量的效果。
在一些实施例中，针对所述第四候选时隙集合不进行边链路控制信息的监测，所述第四候选时隙集合对应的重选资源被随机选择。
由此，对重选资源不进行监测，可以避免不必要的电量消耗，提升节省电量的效果。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，将用于资源初选的候选时隙集合之后的至少一个时隙作为用于资源重选的候选时隙集合；由此，可以增加资源重选时候选资源的个数，减少可能的干扰或降低资源碰撞概率，提升系统性能。
第四方面的实施例
本申请实施例提供一种边链路资源的重选装置。该装置例如可以是终端设备，也可以是配置于终端设备的某个或某些部件或者组件，与第一、二方面的实施例相同的内容不再赘述。
图19是本申请实施例的边链路资源的重选装置的一示意图。如图19所示，边链路资源的重选装置1900包括：确定单元1901、监测单元1902和重选单元1903。
在一些实施例中，确定单元1901为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测时隙集合；并根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；监测单元1902在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及重选单元1903根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
在一些实施例中，所述第一发送周期为基于周期部分感知的首个边链路数据发送周期，所述第二发送周期为所述基于周期部分感知的非首个边链路数据发送周期。
在一些实施例中，确定单元1901用于：根据所述第一发送周期中确定所述第一监测时隙集合的规则，基于所述第二发送周期的第二候选时隙集合确定所述第二发送周期所对应的第三监测时隙集合；以及将所述第三监测时隙集合中的全部或者部分时隙作为 所述第二发送周期进行部分感知的所述第二监测时隙集合。
在一些实施例中，确定单元1901用于：将所述第三监测时隙集合中位于参考时间之后的一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
在一些实施例中，所述参考时间为如下至少之一：
当前发送周期的上一个周期中边链路发送所在的时隙；
当前发送周期的上一个周期中边链路发送之前的时隙，所述时隙为上一个周期中边链路发送之前的处理时间点所在的时隙，所述处理时间点和所述边链路发送至少间隔处理时间长度；
当前发送周期的上一个周期中边链路发送之前的时隙，所述时隙为上一个周期中边链路发送之前的所述处理时间点与所述上一个周期中边链路发送所在的时隙之间的时隙。
在一些实施例中，确定单元1901用于：将所述第三监测时隙集合中对应的预留周期的长度小于周期门限值的一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
在一些实施例中，确定单元1901用于：从所述第三监测时隙集合中随机选择一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
在一些实施例中，确定单元1901用于：将资源重选触发之前和/或之后的一个或多个时隙，或者首个候选时隙之前和/或之后的一个或多个连续时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
在一些实施例中，确定单元1901还用于：将所述第一发送周期的所述第一候选时隙集合在时域上向后平移N个当前发送周期后，作为所述第二发送周期的所述第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
在一些实施例中，重选单元1903还用于：针对所述第二发送周期的所述第二候选时隙集合不进行边链路控制信息的监测，所述第二发送周期的重选资源被随机选择。
在一些实施例中，确定单元1901将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
在一些实施例中，确定单元1901还用于：为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测时隙集合；为所述第二发送周期的所述第二候选时隙集合确定进行部分感知的第二监测时隙集合。
在一些实施例中，监测单元1902在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及重选单元1903根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
在一些实施例中，所述第一发送周期为基于周期部分感知的首个边链路数据发送周期，所述第二发送周期为所述基于周期部分感知的非首个边链路数据发送周期。
在一些实施例中，确定单元1901将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；并根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；监测单元1902在所述第五监测时隙集合进行边链路控制信息的监测；以及重选单元1903根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。
在一些实施例中，确定单元1901用于：根据确定所述第四监测时隙集合的规则，确定所述用于资源重选的第四候选时隙集合所对应的第六监测时隙集合；以及将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合。
在一些实施例中，确定单元1901用于：将所述第六监测时隙集合中位于参考时间之后的一个或多个时隙作为所述第五监测时隙集合，和/或，将所述第六监测时隙集合中对应的预留周期的长度小于周期门限值的一个或多个时隙作为所述第五监测时隙集合，和/或，从所述第六监测时隙集合中随机选择一个或多个时隙作为所述第五监测时隙集合。
在一些实施例中，所述参考时间为如下至少之一：
触发重选的当前边链路发送的上一次边链路发送所在的时隙；
触发重选的当前边链路发送的上一次边链路发送之前的时隙，所述时隙为所述上一次边链路发送之前的处理时间点所在的时隙；所述处理时间点和所述上一次边链路发送至少间隔处理时间长度；
触发重选的当前边链路发送的上一次边链路发送之前的时隙，所述时隙为所述上一次边链路发送之前的所述处理时间与所述上一次边链路发送所在的时隙之间的时隙；
在一些实施例中，所述当前边链路发送和所述上一次边链路发送分别为相同传输块(TB)的重传和初传；或者，所述当前边链路发送和所述上一次边链路发送分别为相同传输块(TB)的第M+1次重传和第M次重传，M为正整数。
在一些实施例中，确定单元1901还用于：将资源重选触发之前和/或之后的一个或多个时隙，或者首个候选时隙之前和/或之后的一个或多个连续时隙作为所述第五监测时 隙集合。
在一些实施例中，重选单元1903还用于：针对所述第四候选时隙集合不进行边链路控制信息的监测，所述第四候选时隙集合对应的重选资源被随机选择。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。边链路资源的重选装置1900还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图19中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
由上述实施例可知，根据第一发送周期的第一监测时隙集合和第二发送周期的第二候选时隙集合，确定第二发送周期进行部分感知的第二监测时隙集合；由此，可以在一部分时隙上针对资源重选进行监测，能够避免不必要的电量消耗，提升节省电量的效果。
此外，将用于资源初选的候选时隙集合之后的至少一个时隙作为用于资源重选的候选时隙集合；由此，可以增加资源重选时候选资源的个数，减少可能的干扰或降低资源碰撞概率，提升系统性能。
第五方面的实施例
本申请实施例还提供一种通信系统，可以参考图1，与第一方面至第四方面的实施例相同的内容不再赘述。
在一些实施例中，通信系统100至少可以包括：
终端设备，其为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测(monitor)时隙集合；根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
在一些实施例中，通信系统100至少可以包括：
终端设备，其为将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
在一些实施例中，通信系统100至少可以包括：
终端设备，其将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；在所述第五监测时隙集合进行边链路控制信息的监测；以及根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。
本申请实施例还提供一种网络设备，例如可以是基站，但本申请不限于此，还可以是其他的网络设备。
图20是本申请实施例的网络设备的构成示意图。如图20所示，网络设备2000可以包括：处理器2010(例如中央处理器CPU)和存储器2020；存储器2020耦合到处理器2010。其中该存储器2020可存储各种数据；此外还存储信息处理的程序2030，并且在处理器2010的控制下执行该程序2030。
此外，如图20所示，网络设备2000还可以包括：收发机2040和天线2050等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备2000也并不是必须要包括图20中所示的所有部件；此外，网络设备2000还可以包括图20中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种终端设备，但本申请不限于此，还可以是其他的设备。
图21是本申请实施例的终端设备的示意图。如图21所示，该终端设备2100可以包括处理器2110和存储器2120；存储器2120存储有数据和程序，并耦合到处理器2110。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
例如，处理器2110可以被配置为执行程序而实现如第一方面的实施例所述的边链路资源的重选方法。例如处理器2110可以被配置为进行如下的控制：为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测(monitor)时隙集合；根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及根据监测结果在所述第二发送周期的所述第二候 选时隙集合进行资源重选。
再例如，处理器2110可以被配置为执行程序而实现如第二方面的实施例所述的边链路资源的重选方法。例如处理器2110可以被配置为进行如下的控制：为将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
再例如，处理器2110可以被配置为执行程序而实现如第三方面的实施例所述的边链路资源的重选方法。例如处理器2110可以被配置为进行如下的控制：将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；在所述第五监测时隙集合进行边链路控制信息的监测；以及根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。
如图21所示，该终端设备2100还可以包括：通信模块2130、输入单元2140、显示器2150、电源2160。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，终端设备2100也并不是必须要包括图21中所示的所有部件，上述部件并不是必需的；此外，终端设备2100还可以包括图21中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所述程序使得所述终端设备执行第一至第三方面的实施例所述的边链路资源的重选方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第一至第三方面的实施例所述的边链路资源的重选方法。
本申请以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本申请涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本申请还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本申请实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本申请进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本申请保护范围的限制。本领域技术人员可以根据本申请的精神和原理对本申请做出各种变型和修改，这些变型和修改也在本申请的范围内。
关于包括以上实施例的实施方式，还公开下述的附记：
附记1.一种边链路资源的重选方法，包括：
终端设备为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测(monitor)时隙集合；
根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；
在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及
根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
附记2.根据附记1所述的方法，其中，所述第一发送周期为基于周期部分感知的首个边链路数据发送周期，所述第二发送周期为所述基于周期部分感知的非首个边链路数据发送周期中的一个周期。
附记3.根据附记1或2所述的方法，其中，根据所述第一发送周期的所述第一监 测时隙集合和第二发送周期的第二候选时隙集合确定所述第二发送周期进行部分感知的第二监测时隙集合，包括：
根据所述第一发送周期中确定所述第一监测时隙集合的规则，基于所述第二发送周期的第二候选时隙集合确定所述第二发送周期所对应的第三监测时隙集合；以及
将所述第三监测时隙集合中的全部或者部分时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
附记4.根据附记3所述的方法，其中，将所述第三监测时隙集合中的全部或者部分时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合，包括：
将所述第三监测时隙集合中位于参考时间之后的一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
附记5.根据附记4所述的方法，其中，所述参考时间为如下至少之一：
当前发送周期的上一个周期中边链路发送所在的时隙；
当前发送周期的上一个周期中边链路发送之前的时隙，所述时隙为上一个周期中边链路发送之前的处理时间点所在的时隙，所述处理时间点和所述边链路发送至少间隔处理时间长度(T3)；
当前发送周期的上一个周期中边链路发送之前的时隙，所述时隙为上一个周期中边链路发送之前的所述处理时间点与所述上一个周期中边链路发送所在的时隙之间的时隙。
附记6.根据附记3至5任一项所述的方法，其中，将所述第三监测时隙集合中的全部或者部分时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合，包括：
将所述第三监测时隙集合中对应的预留周期的长度小于周期门限值的一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
附记7.根据附记6所述的方法，其中，所述周期门限值包括100ms。
附记8.根据附记3至7任一项所述的方法，其中，将所述第三监测时隙集合中的全部或者部分时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合，包括：
从所述第三监测时隙集合中随机选择一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
附记9.根据附记1至8任一项所述的方法，其中，所述方法还包括：
将资源重选触发之前和/或之后的一个或多个时隙，或者首个候选时隙之前和/或之后的一个或多个连续时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集 合。
附记10.根据附记1至9任一项所述的方法，其中，所述方法还包括：
将所述第一发送周期的所述第一候选时隙集合在时域上向后平移N个当前发送周期后，作为所述第二发送周期的所述第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
附记11.根据附记1至10任一项所述的方法，其中，所述方法还包括：
针对所述第二发送周期的所述第二候选时隙集合不进行边链路控制信息的监测，所述第二发送周期的重选资源被随机选择。
附记12.一种边链路资源的重选方法，包括：
终端设备将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
附记13.根据附记12所述的方法，其中，所述方法还包括：
所述终端设备为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测(monitor)时隙集合。
附记14.根据附记12或13所述的方法，其中，所述方法还包括：
所述终端设备为所述第二发送周期的所述第二候选时隙集合确定进行部分感知的第二监测时隙集合；
在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及
根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
附记15.根据附记12至14任一项所述的方法，其中，所述第一发送周期为基于周期部分感知的首个边链路数据发送周期，所述第二发送周期为所述基于周期部分感知的非首个边链路数据发送周期中的一个周期。
附记16.一种边链路资源的重选方法，包括：
终端设备将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；
为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；
根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；
在所述第五监测时隙集合进行边链路控制信息的监测；以及
根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。
附记17.根据附记16所述的方法，其中，根据所述第四监测时隙集合确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合，包括：
根据确定所述第四监测时隙集合的规则，确定所述用于资源重选的第四候选时隙集合所对应的第六监测时隙集合；以及
将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合。
附记18.根据附记17所述的方法，其中，将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合，包括：
将所述第六监测时隙集合中位于参考时间之后的一个或多个时隙作为所述第五监测时隙集合。
附记19.根据附记18所述的方法，其中，所述参考时间为如下至少之一：
触发重选的当前边链路发送的上一次边链路发送所在的时隙；
触发重选的当前边链路发送的上一次边链路发送之前的时隙，所述时隙为所述上一次边链路发送之前的处理时间点所在的时隙，所述处理时间点和所述上一次边链路发送至少间隔处理时间长度(T3)；
触发重选的当前边链路发送的上一次边链路发送之前的时隙，所述时隙为所述上一次边链路发送之前的所述处理时间点与所述上一次边链路发送所在的时隙之间的时隙。
附记20.根据附记19所述的方法，其中，所述当前边链路发送和所述上一次边链路发送分别为相同传输块(TB)的重传和初传；
或者，所述当前边链路发送和所述上一次边链路发送分别为相同传输块(TB)的第M+1次重传和第M次重传，M为正整数。
附记21.根据附记17至20任一项所述的方法，其中，将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合，包括：
将所述第六监测时隙集合中对应的预留周期的长度小于周期门限值的一个或多个时隙作为所述第五监测时隙集合。
附记22.根据附记21所述的方法，其中，所述周期门限值包括100ms。
附记23.根据附记17至22任一项所述的方法，其中，将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合，包括：
从所述第六监测时隙集合中随机选择一个或多个时隙作为所述第五监测时隙集合。
附记24.根据附记16至23任一项所述的方法，其中，所述方法还包括：
将资源重选触发之前和/或之后的一个或多个时隙，或者首个候选时隙之前和/或之后的一个或多个连续时隙作为所述第五监测时隙集合。
附记25.根据附记16至24任一项所述的方法，其中，所述方法还包括：
针对所述第四候选时隙集合不进行边链路控制信息的监测，所述第四候选时隙集合对应的重选资源被随机选择。
附记26.一种终端设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记1至25任一项所述的边链路资源的重选方法。
附记27.一种通信系统，包括：
终端设备，其为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测(monitor)时隙集合；根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
附记28.一种通信系统，包括：
终端设备，其为将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
附记29.一种通信系统，包括：
终端设备，其将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；在所述第五监测时隙集合进行边链路控制信息的监测；以及根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。

Claims (20)

  1. 一种边链路资源的重选装置，包括：
    确定单元，其为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测时隙集合；并根据所述第一发送周期的所述第一监测时隙集合和第二发送周期的第二候选时隙集合，确定所述第二发送周期进行部分感知的第二监测时隙集合；
    监测单元，其在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及
    重选单元，其根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
  2. 根据权利要求1所述的装置，其中，所述第一发送周期为基于周期部分感知的首个边链路数据发送周期，所述第二发送周期为所述基于周期部分感知的非首个边链路数据发送周期中的一个周期。
  3. 根据权利要求1所述的装置，其中，所述确定单元用于：根据所述第一发送周期中确定所述第一监测时隙集合的规则，基于所述第二发送周期的第二候选时隙集合确定所述第二发送周期所对应的第三监测时隙集合；以及将所述第三监测时隙集合中的全部或者部分时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
  4. 根据权利要求3所述的装置，其中，所述确定单元用于：将所述第三监测时隙集合中位于参考时间之后的一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
  5. 根据权利要求4所述的装置，其中，所述参考时间为如下至少之一：
    当前发送周期的上一个周期中边链路发送所在的时隙；
    当前发送周期的上一个周期中边链路发送之前的时隙，所述时隙为上一个周期中边链路发送之前的处理时间点的时隙，所述处理时间点和所述边链路发送至少间隔处理时间长度；
    当前发送周期的上一个周期中边链路发送之前的时隙，所述时隙为上一个周期中边链路发送之前的所述处理时间点与所述上一个周期中边链路发送所在的时隙之间的时隙。
  6. 根据权利要求3所述的装置，其中，所述确定单元用于：将所述第三监测时隙 集合中对应的预留周期的长度小于周期门限值的一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
  7. 根据权利要求3所述的装置，其中，所述确定单元用于：从所述第三监测时隙集合中随机选择一个或多个时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
  8. 根据权利要求1所述的装置，其中，所述确定单元用于：将资源重选触发之前和/或之后的一个或多个时隙，或者首个候选时隙之前和/或之后的一个或多个连续时隙作为所述第二发送周期进行部分感知的所述第二监测时隙集合。
  9. 根据权利要求1所述的装置，其中，所述确定单元还用于：将所述第一发送周期的所述第一候选时隙集合在时域上向后平移N个当前发送周期后，作为所述第二发送周期的所述第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
  10. 根据权利要求1所述的装置，其中，所述重选单元还用于：针对所述第二发送周期的所述第二候选时隙集合不进行边链路控制信息的监测，所述第二发送周期的重选资源被随机选择。
  11. 一种边链路资源的重选装置，包括：
    确定单元，其将第一发送周期的第一候选时隙在时域上向后平移N个当前发送周期后，作为第二发送周期的第二候选时隙集合，其中N为所述第二发送周期与所述第一发送周期间隔的周期个数。
  12. 根据权利要求11所述的装置，其中，所述确定单元还用于：为第一发送周期的第一候选时隙集合确定进行部分感知的第一监测时隙集合；为所述第二发送周期的所述第二候选时隙集合确定进行部分感知的第二监测时隙集合。
  13. 根据权利要求12所述的装置，其中，所述装置还包括：
    监测单元，其在所述第二发送周期的所述第二监测时隙集合进行边链路控制信息的监测；以及
    重选单元，其根据监测结果在所述第二发送周期的所述第二候选时隙集合进行资源重选。
  14. 根据权利要求11所述的装置，其中，所述第一发送周期为基于周期部分感知的首个边链路数据发送周期，所述第二发送周期为所述基于周期部分感知的非首个边链路数据发送周期中的一个周期。
  15. 一种边链路资源的重选装置，包括：
    确定单元，其将用于资源初选的第三候选时隙集合之后的至少一个时隙作为用于资源重选的第四候选时隙集合；为所述第三候选时隙集合确定进行部分感知的第四监测时隙集合；并根据所述第四监测时隙确定所述用于资源重选的第四候选时隙集合所对应的第五监测时隙集合；
    监测单元，其在所述第五监测时隙集合进行边链路控制信息的监测；以及
    重选单元，其根据监测结果在所述用于资源重选的第四候选时隙集合进行资源重选。
  16. 根据权利要求15所述的装置，其中，所述确定单元用于：根据确定所述第四监测时隙集合的规则，确定所述用于资源重选的第四候选时隙集合所对应的第六监测时隙集合；以及将所述第六监测时隙集合中的全部或部分时隙作为所述第五监测时隙集合。
  17. 根据权利要求16所述的装置，其中，所述确定单元用于：
    将所述第六监测时隙集合中位于参考时间之后的一个或多个时隙作为所述第五监测时隙集合，和/或
    将所述第六监测时隙集合中对应的预留周期的长度小于周期门限值的一个或多个时隙作为所述第五监测时隙集合，和/或，
    从所述第六监测时隙集合中随机选择一个或多个时隙作为所述第五监测时隙集合。
  18. 根据权利要求17所述的装置，其中，所述参考时间为如下至少之一：
    触发重选的当前边链路发送的上一次边链路发送所在的时隙；
    触发重选的当前边链路发送的上一次边链路发送之前的时隙，所述时隙为所述上一次边链路发送之前的处理时间点所在的时隙，所述处理时间点和所述上一次边链路发送至少间隔处理时间长度；
    触发重选的当前边链路发送的上一次边链路发送之前的时隙，所述时隙为所述上一次边链路发送之前的所述处理时间点与所述上一次边链路发送所在的时隙之间的时隙；
    其中，所述当前边链路发送和所述上一次边链路发送分别为相同传输块的重传和初传；或者，所述当前边链路发送和所述上一次边链路发送分别为相同传输块的第M+1次重传和第M次重传，M为正整数。
  19. 根据权利要求15所述的装置，其中，所述确定单元还用于：将资源重选触发之前和/或之后的一个或多个时隙，或者首个候选时隙之前和/或之后的一个或多个连续时隙作为所述第五监测时隙集合。
  20. 根据权利要求15所述的装置，其中，所述重选单元还用于：针对所述第四候 选时隙集合不进行边链路控制信息的监测，所述第四候选时隙集合对应的重选资源被随机选择。
PCT/CN2021/085134 2021-04-01 2021-04-01 边链路资源的重选方法及装置 WO2022205387A1 (zh)

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