WO2022236633A1 - 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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WO2022236633A1
WO2022236633A1 PCT/CN2021/092887 CN2021092887W WO2022236633A1 WO 2022236633 A1 WO2022236633 A1 WO 2022236633A1 CN 2021092887 W CN2021092887 W CN 2021092887W WO 2022236633 A1 WO2022236633 A1 WO 2022236633A1
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Prior art keywords
resource
time slot
time
time slots
monitoring
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PCT/CN2021/092887
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English (en)
French (fr)
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纪鹏宇
张健
李国荣
张磊
王昕�
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富士通株式会社
纪鹏宇
张健
李国荣
张磊
王昕�
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Priority to PCT/CN2021/092887 priority Critical patent/WO2022236633A1/zh
Publication of WO2022236633A1 publication Critical patent/WO2022236633A1/zh

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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiment of the present application relates to the technical field of communications.
  • Mode 1 In Rel-15 and previous versions of Vehicle to Everything (V2X, Vehicle to Everything) communication, two allocation methods of Sidelink resources are supported: Mode 1 and Mode 2.
  • Mode 1 side link resources are allocated by network devices (such as base stations); for Mode 2, terminal devices independently select transmission resources, that is, transmission resources are obtained through sensing or detection-resource selection processes.
  • 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 is considered to be a resource selection mechanism for power saving in Rel-17.
  • embodiments of the present application provide a side link resource reselection method and device.
  • a method for reselecting side link resources including:
  • the selected first resource For the selected first resource, according to whether the selected first resource has been reserved by the first side link control information before the first resource, determine the A set of monitoring time slots for resource re-evaluation corresponding to the first resource;
  • an apparatus for reselecting side link resources including:
  • a resource determining unit for the selected first resource, according to whether the selected first resource has been reserved by the first side link control information before the first resource, determine the A set of monitoring slots for resource re-evaluation corresponding to the first resource;
  • a reselection determining unit which determines whether to perform resource reselection in the candidate time slot set according to the monitoring result.
  • a method for reselecting side link resources including:
  • the terminal device determines, according to the feedback information sent last time corresponding to the selected third resource, which is used before the third resource and corresponding to the third resource.
  • an apparatus for reselecting side link resources including:
  • a resource determining unit for the selected third resource, according to the feedback information sent last time corresponding to the selected third resource, determine the resource preceding the third resource and corresponding to the third resource A set of monitoring slots for resource re-evaluation and/or preemption detection;
  • a reselection determining unit which determines whether to perform resource reselection in the candidate time slot set according to the monitoring result.
  • a communication system including:
  • a terminal device for the selected first resource, according to whether the selected first resource has been reserved by the first side link control information before the first resource, determine the And a monitoring time slot set for resource re-evaluation corresponding to the first resource; and determining whether to perform resource reselection in the candidate time slot set according to the monitoring result;
  • the prior to the third resource and corresponding to the third resource for A monitoring time slot set for resource re-evaluation and/or preemption detection; and determining whether to perform resource reselection in the candidate time slot set according to the monitoring result.
  • One of the beneficial effects of the embodiments of the present application is: according to whether the selected first resource has been reserved by the previous side link control information, the set of monitoring time slots used for resource re-evaluation is determined; The time slot being monitored. Therefore, monitoring for resource reselection can be performed on fewer time slots while ensuring sensing accuracy, which can avoid unnecessary power consumption and improve the effect of power saving.
  • Fig. 1 is the schematic diagram of the communication system of the embodiment of the present application.
  • FIG. 2 is a schematic diagram of side link resource selection performed by a terminal device
  • FIG. 3 is a schematic diagram of partial sensing performed by a terminal device
  • Fig. 4 is a schematic diagram of continuous part perception
  • Fig. 5 is an example diagram of the resource reassessment process
  • FIG. 6 is an example diagram of a resource preemption detection process
  • FIG. 7 is a schematic diagram of a set of monitoring time slots in the process of resource re-evaluation/preemption detection
  • FIG. 8 is a schematic diagram of a method for reselecting side link resources according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of determining a set of monitoring time slots according to an embodiment of the present application.
  • FIG. 10 is an example diagram of a set of monitoring time slots according to an embodiment of the present application.
  • FIG. 11 is a schematic diagram of a side link resource reselection method according to an embodiment of the present application.
  • FIG. 12 is an example diagram of determining a set of monitoring time slots according to an embodiment of the present application.
  • FIG. 13 is another example diagram of determining a set of monitoring time slots according to an embodiment of the present application.
  • FIG. 14 is another example diagram of determining a set of monitoring time slots according to an embodiment of the present application.
  • FIG. 15 is another example diagram of determining a set of monitoring time slots according to an embodiment of the present application.
  • FIG. 16 is a schematic diagram of an apparatus for reselecting side link resources according to an embodiment of the present application.
  • FIG. 17 is a schematic diagram of a network device according to an embodiment of the present application.
  • FIG. 18 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 from the title, but do not indicate the spatial arrangement or time 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” and the like refer to the presence of stated features, elements, elements or components, but do not exclude 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 conforming to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • LTE-A Long Term Evolution-A
  • LTE- Advanced Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to any stage of communication protocols, such as 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 that are currently known or will 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 equipment may include but not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobile 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 not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include Remote Radio Head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low-power nodes (such as femeto, pico, etc.).
  • NodeB Node B
  • eNodeB or eNB evolved Node B
  • gNB 5G base station
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low-power nodes such as femeto, pico, etc.
  • base station may include some or all of their functions, each base station may provide communication coverage for a specific geographic area.
  • the term "cell” can 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 called a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, etc.
  • the terminal equipment may include but not limited to the following equipment: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication equipment, handheld equipment, machine-type communication equipment, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
  • Cellular Phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem wireless communication equipment
  • handheld equipment machine-type communication equipment
  • laptop computer Cordless phones
  • Cordless phones smartphones, smart watches, digital cameras, and more.
  • the terminal device can also be a machine or device for monitoring or measurement, such as but not limited to: a machine type communication (MTC, Machine Type Communication) terminal, Vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, etc.
  • MTC Machine Type Communication
  • Vehicle communication terminal device to device (D2D, Device to Device) terminal
  • M2M Machine to Machine
  • network side refers to one side of the network, which may be a certain base station, or may include one or more network devices as above.
  • user side or “terminal side” or “terminal device side” refers to a side of a user or a terminal, which may be a certain UE, or may include one or more terminal devices as above.
  • device may refer to network devices or terminal devices.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a case where a terminal device and a network device are taken as examples.
  • a communication system 100 may include a network device 101 and terminal devices 102 and 103.
  • FIG. 1 only uses two terminal devices and one network device as an example for illustration, but this embodiment of the present application is not limited thereto.
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communication
  • URLLC Ultra-Reliable and Low -Latency Communication
  • 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 thereto. Neither of the two terminal devices 102, 103 may be within the coverage of the network device 101, or one terminal device 102 may be within the coverage of the network device 101 while the other terminal device 103 is outside the coverage of the network device 101.
  • side link transmission can be performed between 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 realize V2X communication, or both can perform side link transmission outside the coverage of the network device 101 to realize V2X
  • one terminal device 102 may be within the coverage of the network device 101 while the other terminal device 103 is outside the coverage of the network device 101 to perform side link transmission to realize V2X communication.
  • terminal devices 102 and/or 103 can independently select side link resources (that is, use Mode2), and in this case the side link transmission can be independent of network device 101, that is, network device 101 is optional .
  • this embodiment of the present application can also combine the independent selection of side link resources (that is, Mode 2) and the allocation of side link resources by the network device (that is, Mode 1); this embodiment of the present application does not limit this.
  • a terminal device can obtain side link transmission resources through a process of sensing detection + resource selection, wherein the sensing (sensing) can be performed continuously to obtain resource occupancy in the resource pool. For example, the terminal device may estimate the resource occupancy situation in the next period of time (called the selection window) according to the resource occupancy situation in the previous period of time (called the perception window).
  • FIG. 2 is a schematic diagram of side link resource selection by a terminal device.
  • the terminal device passes through (n-1000)th to (n-1)th subframes or time slots (ie sensing window, sensing window ) and the detection of time-frequency resource reference signals at different locations, the resource occupancy of the sensing window can be obtained, and then the (n+T1)th to (th Resource occupancy of n+T2) subframes or time slots (ie selection window, selection window).
  • the physical layer of the terminal device obtains a resource selection granularity R x,y from a high layer (such as a media access control (MAC, Media Access Control) layer); the granularity may represent a subframe A series of continuous sub-channels within each sub-channel, each including more than one continuous physical resource block (PRB, Physical Resource Block), the number of PRBs can be determined by the resource pool, and the resource pool is configured or pre-configured by a network device (such as a base station) Configuration: a set of resources of size R x, y in all subframes in the entire selection window (hereinafter referred to as R x, y candidate resources) is initialized and defined as Set A.
  • a network device such as a base station
  • the terminal device may exclude part of candidate resources in Set A (candidate resource set) according to the detection result within the sensing window before the data to be sent arrives.
  • Set A candidate resource set
  • R x,y candidate resources need to be excluded:
  • DMRS demodulation reference signal
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink shared channel
  • RSRP Reference Signal Received Power
  • Th(prio RX ) the value of Th(prio RX ) corresponds to The high-level parameter ThresRSRP_pi_pj
  • p j is the priority of the data to be sent by the current UE indicated by the high-level
  • p i is the priority indicated in the detected SCI of other UEs
  • the resources here refer to the candidate resources of set A in the current selection window, and the resources in the periodic positions that may be reserved in the subsequent periods of the periodic business.
  • the RSRP threshold value is increased by 3dB, from the initial Set Re-exclude in A until the number of 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 at 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.
  • a modulation and coding scheme (MCS, Modulation and Coding Scheme) is selected in the indicated resource for data transmission.
  • the number of transmissions is 2, after the MAC layer selects a resource, it satisfies the time domain range that can be indicated by the initial transmission SCI in the remaining available resource set, for example ([- 31,31]) but does not include the set of other resources in the subframe where the selected resource is located, randomly select another resource and generate another grant, and select an MCS in the indicated resource for data retransmission.
  • the earlier resource in time is used to send the initial transmission data
  • the later resource in time is used to send the retransmission 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 a partial sensing resource selection mechanism.
  • Fig. 3 is a schematic diagram of partial sensing performed by a terminal device.
  • Y subframes may be selected in a 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 sensing window is related to the kth bit The subframe to which the bit corresponds needs to be monitored. In short, only the subframes in the selection window corresponding to the subframes monitored in the sensing window can be selected as the subframes in the Y subframe set.
  • a new partial sensing mechanism is defined, which can be used after and/or before the resource selection trigger time n, or Continuously monitor for a period of time before and/or after the first time slot y0 of the candidate Y time slots to eliminate the interference caused by aperiodic services to the current transmission, and start the resource selection process after the continuous detection time ends; this This mechanism is defined as contiguous partial sensing.
  • Fig. 4 is a schematic diagram of continuous part perception. As shown in Figure 4, for example, during a period of time after the resource selection trigger time n and before the first time slot y0 of the candidate Y time slots, the terminal device can continuously monitor, and this period of time can be called continuous partial sensing Time (CPSO, Contiguous Partial Sensing Occasion).
  • CPSO Continuous partial sensing Time
  • 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, resource re-evaluation ( re-evaluation) process and/or resource preemption (pre-emption) detection process, and judging the priority of side link transmission, so as to decide whether to reselect the resources that have been selected.
  • This is mainly to eliminate possible interference from non-periodic or short-period services.
  • the resources reserved by this SCI need to be re-evaluated to determine whether the reserved resources are still available after a period of time In the candidate resource set, that is, whether it overlaps with resources occupied by other terminal devices and the measured RSRP value is greater than the corresponding threshold.
  • the resource re-evaluation process is based on obtaining a candidate resource set (Step 1) at the physical layer. If a resource is no longer in the set of candidate resources reported through the resource re-evaluation process, the resource needs to be reselected.
  • 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 indication of m1, then at the time point T3 before m1 is sent, m1, m2 need to be Perform re-evaluation with m3, if there is a resource (assumed to be m2) that is not in the set of candidate resources after resource re-evaluation, trigger resource re-selection for m2.
  • a resource preemption detection is performed on a resource that has been reserved by the SCI indication to determine whether the reserved resource is still in the candidate resource set after a period of time, that is, whether it is related to other terminals
  • the resources occupied by the devices overlap and the measured 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 current data to be sent.
  • the resource preemption detection process is based on obtaining a candidate resource set (Step 1) at the physical layer.
  • 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.
  • a terminal device that performs partial sensing it is also necessary to perform resource re-evaluation and/or preemption detection on a selected resource, so as to trigger a possible resource reselection process, and avoid resource bands overlapping with the selected resource from being selected by other terminal devices. to interfere.
  • a basically agreed view is that for a terminal device that performs partial sensing, its execution of resource re-evaluation/preemption detection is also based on the results obtained during the partial sensing process. That is, it is necessary to support periodic-based partial sensing and contiguous partial sensing for re-evaluation/preemption detection of selected resources.
  • the MAC layer finds that the currently selected resources are not in the set of candidate resources reported by the physical layer, re-select the current resources, in the reported set Reselect a resource for this sending;
  • the selected resource for preemption detection has been indicated or reserved by the SCI
  • the MAC layer finds that the currently selected resource is not in the candidate resource set reported by the physical layer, and the SCI is found to be the same as the currently selected resource. If the priority corresponding to the reserved resources of other terminal devices that partially overlaps is higher than the current transmission priority and higher than a configured threshold, the current resource is reselected, and a resource is reselected in the reported set for this sent.
  • the monitoring time slot set can indicate A maximum length of time and a predetermined processing time length are determined.
  • the starting position of the corresponding monitoring time slot set that needs to be sensed is the time slot whose interval length before the time slot where the currently selected resource is located is the SCI window (that is, the maximum interval that can be indicated in the SCI, for example, 31 time slots) ;
  • the end position is a time slot whose interval length is one processing time before the time slot where the currently selected resource is located.
  • FIG. 7 is a schematic diagram of a set of monitoring time slots in the process of resource re-evaluation/preemption detection.
  • the corresponding monitoring time slot set 701 also called continuous partial perception time CPSO
  • the interval length is the time slot (as shown in 703) of the SCI window (that is, the maximum interval that can be indicated in the SCI, for example, 31 time slots); the end position is the time slot where the currently selected resource m is located (as shown in 702)
  • the length of the previous interval is the processing time (abbreviated as T proc ) time slot (as shown in 704 ).
  • the monitoring time slot set 701 does not include the time slot shown in 704 .
  • processing time is related to the sub-carrier spacing (SCS, Sub-Carrier Spacing).
  • SCS sub-carrier Spacing
  • V2X is taken as an example to describe side links, but this application is not limited thereto, and can also be applied to side link transmission scenarios other than V2X.
  • sidelink and “V2X” are interchangeable
  • PSFCH and “sidelink feedback channel” are interchangeable
  • PSCCH and “Sidelink Control Channel” or “Sidelink Control Information” are interchangeable
  • PSSCH and “Sidelink Data Channel” or “Sidelink Data” are also interchangeable.
  • sending (transmitting) or receiving (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 (Sidelink transmission, also referred to as sidelink transmission) can be understood as PSCCH/PSSCH transmission or sidelink data/information transmission.
  • An embodiment of the present application provides a side link resource reselection method, which is described from a terminal device supporting 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. 8 is a schematic diagram of a method for reselecting side link resources according to an embodiment of the present application. As shown in Figure 8, the method includes:
  • the terminal device determines the A set of monitoring slots for resource re-evaluation.
  • the preemption detection in the edge link resource pool is configured as disabled. In some other embodiments, the preemption detection in the side link resource pool is configured to be enabled (enabled), and the value of the priority of the current transmission is less than or equal to the configured or pre-configured threshold value, that is, the priority of the current transmission is high Based on the predetermined priority (the smaller the value of the priority, the higher the priority). Thus, no preemption detection is required in these scenarios.
  • the monitoring time slot set is based on the time domain position of the first resource and the maximum value indicated by the side link control information. A length of time and a predetermined processing time length are determined.
  • the starting time slot of the monitoring time slot set is the first time slot before the time slot where the first resource is located and separated from the time slot where the first resource is located by the maximum number of time slots that can be indicated by the side link control information
  • the end time slot of the set of monitoring time slots is the second time slot before the time slot where the first resource is located, and the number of time slots corresponding to the predetermined processing time interval between the time slots where the first resource is located.
  • the set of monitoring time slots includes the first time slot but does not include the second time slot, and the number of time slots corresponding to the predetermined processing time is predetermined according to the subcarrier spacing.
  • the present application is not limited thereto.
  • the set of monitoring time slots may not include the first time slot or other time slots, or may also include the second time slot.
  • the set of time slots that need to perform continuous partial sensing before is the same as the set of monitoring time slots 701 in FIG. 7 .
  • the set of monitoring time slots all time slots capable of sensing are detected. Since the current resource has not been indicated or reserved, monitoring is performed in these time slots for re-evaluation of the current resource and selected resources after the current resource. Thus, the accuracy of resource re-evaluation can be ensured.
  • the terminal device further depends on whether the second side-link control information corresponding to the selected first resource is reserved.
  • the second resource is reserved, and a set of monitoring time slots for resource re-evaluation prior to and corresponding to the first resource is determined.
  • the second resource is a resource not reserved by any side link control information before the time slot where the first resource is located, and the second resource may be called a new resource.
  • the selected first resource has been reserved by the first side link control information
  • the second side link control information corresponding to the selected first resource reserves one or more second
  • the monitoring time slot set is determined according to the time domain position of the first resource in the second resource, the maximum time length that can be indicated by the side link control information, the time domain position of the first resource, and the predetermined processing time length .
  • the maximum time length that can be indicated by the side link control information is the maximum number of time slots that can be indicated by it, for example, 31 time slots; the maximum time length can be called an SCI window, as shown in FIG. 7 Show.
  • the predetermined processing time length may be represented by the number of time slots, and the number of time slots is predetermined according to the subcarrier spacing. For specific values, please refer to the aforementioned Table 1 and Table 2.
  • the third time slot that has the maximum number of time slots that can be indicated by the side link control information is separated from the time slot where the first resource is located in the second resource Before the time slot where the first resource is located and the distance from the time slot where the first resource is located is greater than the predetermined processing time length, then
  • the starting time slot of the monitoring time slot set is the number of time slots that can be indicated by the side link control information before the time slot of the first resource in the second resource and the time slot of the first resource in the second resource.
  • the third time slot with the maximum value, the end time slot of the monitoring time slot set is the second time slot before the time slot where the first resource is located, and the number of time slots corresponding to the predetermined processing time between the time slots where the first resource is located .
  • the set of monitoring time slots includes the third time slot but does not include the second time slot, and the number of time slots corresponding to the predetermined processing time is predetermined according to the subcarrier spacing.
  • the present application is not limited thereto.
  • the set of monitoring time slots may not include the third time slot or other time slots, or may also include the second time slot.
  • FIG. 9 is a schematic diagram of determining a set of monitoring time slots according to an embodiment of the present application. As shown in Figure 9, the method includes:
  • the terminal device determines whether the selected first resource has been reserved by the first side link control information before the first resource; if the selected first resource is not reserved by the first side link control information, perform 902, otherwise execute 903;
  • the set of slots 701 are the same.
  • Fig. 10 is an example diagram of a set of monitoring time slots according to the embodiment of the present application, where the number of transmissions is 6.
  • the selected resources include resource 0 to resource 6 .
  • the resource 0 is not reserved by the previous SCI
  • the SCI corresponding to the resource 0 indicates or reserves the resource 1, and resource 0 and resource 1 need to be re-evaluated before the resource 0, then for
  • the set of monitoring time slots for resource re-evaluation of resource 0 and resource 1 is shown as 1001 .
  • the resource 3 is not reserved by the previous SCI, and the SCI corresponding to the resource 3 indicates or reserves resources 4 and 5, and resources 3, 4 and 5 need to be resourced before the resource 3.
  • the set of monitoring time slots for resource re-evaluation for the resource 3 and resources 4 and 5 is shown in 1002 .
  • sensing can be performed in a set of monitoring time slots (relatively long).
  • the method also includes:
  • the second set of monitoring time slots is, for example, smaller than the set of monitoring time slots 701 in FIG. 7 .
  • the resource 1 has been reserved by the previous SCI (the SCI corresponding to resource 0), and the SCI corresponding to the resource 1 indicates or reserves resource 2, and the resource 2 has not been reserved.
  • resource 2 For any SCI reservation before resource 1 (so it is a new resource), resource 2 needs to be re-evaluated before resource 1, and the set of monitoring time slots for resource re-evaluation for resource 2 is shown in 1003 .
  • the resource 4 has been reserved by the previous SCI (the SCI corresponding to the resource 3), and the SCI corresponding to the resource 4 indicates or reserves resources 5 and 6, and the resource 6 has not been reserved by the previous SCI of the resource 4.
  • SCI reserved by which is a new resource
  • resource 6 needs to be re-evaluated before resource 4 , and the set of monitoring time slots for resource re-evaluation for resource 6 is shown in 1004 .
  • the time slot where the first resource in the second resource is located is separated from the time slot where the first resource is located in the second resource, there is a maximum number of time slots that can be indicated by the side link control information If the third time slot is after the time slot where the first resource is located, or the interval between the third time slot and the time slot where the first resource is located is less than or equal to the predetermined processing time length, then the set of monitoring time slots is empty.
  • the first resource among the second resources is resource 2, and the third time slot is shown as 1005 . If the third time slot 1005 is after the time slot where the resource 1 is located, or the interval between the third time slot 1005 and the time slot where the resource 1 is located is less than the processing time (T proc ), then the monitoring time slot set 1003 is empty.
  • second-type resources For the selected first resources that have been reserved by the first side-link control information and one or more second resources are reserved by the corresponding second side-link control information (referred to as second-type resources) , can be sensed in a set (relatively short) of monitoring slots.
  • the second monitoring slot set may also be set to be empty. That is, for the selected first resources that have been reserved by the first side link control information and one or more second resources are reserved by the corresponding second side link control information (referred to as type 2 resources) , no continuous partial sensing for resource re-evaluation is performed before the first resource.
  • the method also includes:
  • the resource 2 has been reserved by the previous SCI (the SCI corresponding to resource 1), and the SCI corresponding to the resource 2 does not indicate or reserve resources, so the resource 2 If resource re-evaluation is not required before, the set of monitoring time slots for resource re-evaluation for the resource 2 is empty.
  • the resource 5 has been reserved by the previous SCI (the SCI corresponding to the resources 3 and 4), and the SCI corresponding to the resource 5 indicates or reserves the resource 6 (the resource 6 is reserved by the previous SCI of the resource 5).
  • the SCI of resource 4 is reserved, so it is not a new resource), so resource re-evaluation does not need to be performed before resource 5, and the set of monitoring time slots for resource re-evaluation for resource 5 is empty.
  • the resource 6 has been reserved by the previous SCI (the SCI corresponding to resources 4 and 5), and the SCI corresponding to the resource 6 does not indicate or reserve resources, so there is no need for this resource 6
  • the set of monitoring time slots for resource re-evaluation for the resource 6 is empty.
  • the terminal device monitors the remaining time slots after removing some time slots in the set of monitoring time slots.
  • the terminal device cannot sense when sending data, and the part of time slots includes time slots for sending side link data and/or time slots for sending uplink data.
  • the present application is not limited thereto, and the part of time slots may also be other specified or configured time slots.
  • re-evaluation may be performed based on the sensing result, and resource reselection may be triggered if it is found that the selected resource is not included in the candidate resource set.
  • the resource that has not been reserved may be a resource sent aperiodically, or it may be the first resource in the first cycle of periodic transmission, or it may be a resource with an interval greater than a predetermined time (31 time slots), or resources reselected after resource reselection that are separated from the previous resource by more than a predetermined time (31 time slots).
  • the reservation refers to, for example, the reservation of initial transmission or retransmission to subsequent retransmission, and may also be the reservation of transmission in the previous period to transmission in the next period.
  • the set of monitoring time slots for resource re-evaluation is determined according to whether the selected first resource has been reserved by the previous side link control information; some time slots that should have been monitored may not be monitored . Therefore, monitoring for resource reselection can be performed on fewer time slots while ensuring sensing accuracy, which can avoid unnecessary power consumption and improve the effect of power saving.
  • An embodiment of the present application provides a side link resource reselection method, which is described from a terminal device supporting 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. 11 is a schematic diagram of a side link resource reselection method according to an embodiment of the present application. As shown in Figure 11, the method includes:
  • the terminal device determines, according to the feedback information sent last time corresponding to the selected third resource, the resource re-evaluation and / or a set of monitoring slots for preemption detection;
  • FIG. 11 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto.
  • the execution order of various operations can be appropriately adjusted, and some other operations can be added or some of them can be reduced.
  • Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the above description in FIG. 11 .
  • the monitoring time slot set may be the first time slot set (such as the monitoring time slot set 701 shown in FIG. 7 ), or a part of the first time slot set (such as the second time slot described later slot set or the third slot set), it can also be an empty set.
  • the starting position and/or ending position of the monitoring time slot set may be determined according to the feedback information.
  • a physical side link feedback channel (PSFCH) is configured in the side link resource pool, and hybrid automatic repeat request (HARQ) feedback is enabled (enabled).
  • PSFCH physical side link feedback channel
  • HARQ hybrid automatic repeat request
  • the transmission corresponding to the third resource is a retransmission of the same transport block (TB) sent last time.
  • the terminal device may receive feedback information for the last transmission, such as acknowledgment (ACK) and/or non-acknowledgement (NACK), and the feedback information may be called HARQ-ACK.
  • ACK acknowledgment
  • NACK non-acknowledgement
  • the terminal device after receiving the feedback information, the terminal device starts to monitor the time slots in the first time slot set including one or more consecutive time slots.
  • the terminal device After receiving the feedback information, the terminal device starts to monitor the time slots in the first time slot set when the feedback information is non-acknowledgment (NACK), and the monitoring time slot set is the time slot in the first time slot set
  • NACK non-acknowledgment
  • the monitoring time slot set is the time slot in the first time slot set
  • the third set of time slots when the feedback information is an acknowledgment (ACK), the time slots in the first set of time slots are not monitored, and the set of monitoring time slots is an empty set.
  • the third time slot set is determined according to the time domain position of the third resource, the time domain position of the resource where the feedback information is located, the maximum time length that can be indicated by the side link control information, and the predetermined processing time length.
  • the maximum time length that can be indicated by the side link control information is the maximum number of time slots that can be indicated by it, for example, 31 time slots; the maximum time length can be called an SCI window, as shown in FIG. 7 Show.
  • the predetermined processing time length may be represented by the number of time slots, and the number of time slots is predetermined according to the subcarrier spacing. For specific values, please refer to the aforementioned Table 1 and Table 2.
  • the fourth time slot before the time slot where the third resource is located and separated from the time slot where the third resource is located by the maximum number of time slots that can be indicated by the side link control information is before the time slot where the feedback information is located, and is separated from the time slot where the third resource is located.
  • the monitoring time slot set is the third time slot set
  • the third time slot set The starting time slot of is the time slot where the feedback information is located, and the ending time slot of the third time slot set is the fifth time slot.
  • the third time slot set does not include the time slot where the feedback information is located and does not include the fifth time slot, and the number of time slots corresponding to the predetermined processing time is predetermined according to the subcarrier spacing.
  • the present application is not limited thereto, for example, other time slots may not be included, or the time slot where the feedback information is located and/or the fifth time slot may be included.
  • FIG. 12 is an example diagram of determining a set of monitoring time slots according to an embodiment of the present application.
  • the set of monitoring time slots may be determined to be 1201.
  • a first set of time slots (as shown in 1202 and 1203) may also be temporarily determined first, but the second set of time slots in the first set of time slots ( Timeslots shown at 1202) are not monitored (skipped as shown at 1202).
  • the third time slot set 1203 is the actual monitoring time slot set
  • the start time slot of the monitoring time slot set is the time slot where the NACK is located
  • the end time slot is the fifth time slot (as shown in 12031 Show).
  • the fourth time slot before the time slot where the third resource is located and separated from the time slot where the third resource is located by the maximum number of time slots that can be indicated by the side link control information is in the time slot where the feedback information is located
  • the set of monitoring time slots is the first time slot set
  • the start time slot of the first time slot set is the fourth time slot
  • the end time slot of the first time slot set is the interval from the time slot where the third resource is located
  • the first time slot set includes the fourth time slot but does not include the fifth time slot, and the number of time slots corresponding to the predetermined processing time is predetermined according to the subcarrier spacing.
  • the present application is not limited thereto.
  • the first time slot set may not include the fourth time slot or other time slots, or may also include the fifth time slot.
  • the fourth time slot (as shown in 12021 ) after the time slot where NACK is located, then for resource 1, the actual monitoring time slot set is the first time slot set, and the starting time slot of the first time slot set is the fourth time slot (as shown in 12021), and the end The time slot is the fifth time slot (shown as 12031).
  • the method of determining the actual monitoring time slot set is consistent with the monitoring time slot set 1201 .
  • FIG. 13 is another example diagram of determining a set of monitoring time slots according to the embodiment of the present application.
  • the set of monitoring time slots may be determined as 1301 .
  • a first time slot set may also be temporarily determined (as shown in 1302), but no monitoring (skip) is performed until feedback information (ACK or NACK) is received.
  • ACK or NACK feedback information
  • time slots that should be monitored may not be monitored.
  • monitoring for resource reselection can be performed on fewer time slots, which can avoid unnecessary power consumption and improve the effect of power saving.
  • the terminal device needs to perform resource selection or reselection, so it monitors the time slots of the monitoring time slot set, and the terminal device may also serve as a receiving device to receive side link data at the same time.
  • the terminal device does not monitor the time when the monitoring is not performed in case of receipt of an acknowledgment (ACK) that overlaps with the inactive period of the discontinuous reception (DRX) slots, but still monitor the slots that are not monitored in the case of an acknowledgment (ACK) received overlapping with the discontinuous reception (DRX) activation period.
  • the terminal device can only cancel the overlapping of the DRX inactive period ( Overlap) time slot monitoring, but cannot cancel the monitoring of the time slot overlapping with the DRX activation (active) period in the monitoring time slot set of continuous partial sensing.
  • DRX discontinuous reception
  • the terminal device starts to monitor the time slots in the first time slot set including one or more time slots before receiving the feedback information.
  • the first time slot set is determined according to the time domain position of the third resource, the maximum time length that can be indicated by the side link control information, and the predetermined processing time length.
  • the starting time slot of the first time slot set is the fourth time slot before the time slot where the third resource is located and separated from the time slot where the third resource is located by the maximum number of time slots that can be indicated by the side link control information.
  • the end time slot of the first time slot set is the fifth time slot of the number of time slots corresponding to the predetermined processing time between the time slots where the third resource is located.
  • the terminal device continues to monitor the remaining time slots in the first time slot set when the feedback information received is non-acknowledgment (NACK), and the monitoring time slot set is the first time slot set; When the received feedback information is an acknowledgment (ACK), stop monitoring the remaining time slots in the first time slot set, and the monitoring time slot set is the second time slot set in the first time slot set.
  • NACK non-acknowledgment
  • ACK acknowledgment
  • FIG. 14 is another example diagram of determining the monitoring time slot set according to the embodiment of the present application.
  • the monitoring time slot set may be determined as 1401.
  • a first time slot set (as shown in 1402 and 1403) may also be temporarily determined first, and the second time slot set in the first time slot set (such as 1402) time slots for monitoring.
  • the fourth time slot (such as As shown in 14021) before the time slot where NACK is located, and the fifth time slot (as shown in 14031) corresponding to the number of time slots corresponding to the predetermined processing time (T proc ) between the time slots where resource 1 is located is in the time slot where NACK is located Afterwards, therefore, for resource 1, the first time slot set including the second time slot set (such as 1402) and the third time slot set (such as 1403) is the actual monitoring time slot set, and the start of the monitoring time slot set The time slot is the fourth time slot (as shown in 14021), and the end time slot is the fifth time slot (as shown in 14031).
  • FIG. 15 is another example diagram of determining a set of monitoring time slots according to the embodiment of the present application.
  • the set of monitoring time slots may be determined as 1501.
  • a first time slot set (as shown in 1502 and 1503) may also be temporarily determined first, and the second time slot set in the first time slot set (such as 1502) time slots for monitoring.
  • the second time slot set (as shown in 1502) is the actual monitoring time slot set
  • the starting time slot of the monitoring time slot set is the fourth time slot (as shown in 15021)
  • the end The time slot is the time slot where the ACK is located.
  • time slots that should be monitored may not be monitored.
  • monitoring for resource reselection can be performed on fewer time slots, which can avoid unnecessary power consumption and improve the effect of power saving.
  • the terminal device needs to perform resource selection or reselection, so it monitors the time slots of the monitoring time slot set, and the terminal device may also serve as a receiving device to receive side link data at the same time.
  • the terminal device does not monitor the period of acknowledgment (ACK) that overlaps with the inactive period of the discontinuous reception (DRX). remaining time slots, but still monitors said remaining time slots that overlap with said discontinuous reception (DRX) activation period and cease monitoring in case of receipt of an acknowledgment (ACK).
  • the terminal device can only cancel the overlapping of the DRX inactive period ( Overlap) time slot monitoring, but cannot cancel the monitoring of the time slot overlapping with the DRX activation (active) period in the monitoring time slot set of continuous partial sensing.
  • DRX discontinuous reception
  • the terminal device monitors the remaining time slots after removing some time slots in the set of monitoring time slots.
  • the terminal device cannot sense when sending data, and the part of time slots includes time slots for sending side link data and/or time slots for sending uplink data.
  • the present application is not limited thereto, and the part of time slots may also be other specified or configured time slots.
  • the monitoring time slot set used for resource re-evaluation and/or preemption detection is determined according to the feedback information sent last time corresponding to the selected third resource; time slot. Therefore, monitoring for resource reselection can be performed on fewer time slots while ensuring sensing accuracy, which can avoid unnecessary power consumption and improve the effect of power saving.
  • An embodiment of the present application provides an apparatus for reselecting side link resources.
  • the apparatus may be, for example, a terminal device, or may be one or some components or components configured on the terminal device, and the content that is the same as that in the embodiment of the first aspect will not be repeated here.
  • FIG. 16 is a schematic diagram of an apparatus for reselecting side link resources according to an embodiment of the present application.
  • an apparatus 1600 for reselecting side link resources includes: a resource determining unit 1601 and a reselecting determining unit 1602 .
  • the resource determining unit 1601 determines the resources preceding the first resource and corresponding to the first resource according to whether the selected first resource has been reserved by the first side link control information preceding the first resource. A set of monitoring slots for resource re-evaluation; and
  • the reselection determining unit 1602 determines whether to perform resource reselection in the candidate time slot set according to the monitoring result.
  • the monitoring time slot set is based on the time domain position of the first resource and the maximum value indicated by the side link control information. A length of time and a predetermined processing time length are determined.
  • the maximum time length that can be indicated by the side link control information is the maximum number of time slots that can be indicated by it, for example, 31 time slots; the maximum time length can be called an SCI window, as shown in FIG. 7 Show.
  • the predetermined processing time length may be represented by the number of time slots, and the number of time slots is predetermined according to the subcarrier spacing. For specific values, please refer to the aforementioned Table 1 and Table 2.
  • the starting time slot of the monitoring time slot set is the first time slot before the time slot where the first resource is located and separated from the time slot where the first resource is located by the maximum number of time slots that can be indicated by the side link control information.
  • One time slot, the end time slot of the monitoring time slot set is the second time slot before the time slot where the first resource is located, and the number of time slots corresponding to the predetermined processing time interval between the time slot where the first resource is located;
  • the set of monitoring time slots includes the first time slot but does not include the second time slot, and the number of time slots corresponding to the predetermined processing time is predetermined according to the subcarrier spacing.
  • the present application is not limited thereto.
  • the set of monitoring time slots may not include the first time slot or other time slots, or may also include the second time slot.
  • the resource determining unit 1601 is further configured to: if the selected first resource has been reserved by the first side link control information, according to the second side chain corresponding to the selected first resource Whether the channel control information reserves the second resource, determine the set of monitoring time slots used for resource re-evaluation before the first resource and corresponding to the first resource; wherein, the second resource is not before the time slot where the first resource is located The resources reserved by the side link control information.
  • the selected first resource has been reserved by the first side link control information
  • the second side link control information corresponding to the selected first resource reserves one or more second
  • the monitoring time slot set is determined according to the time domain position of the first resource in the second resource, the maximum time length that can be indicated by the side link control information, the time domain position of the first resource, and the predetermined processing time length .
  • the time slot where the first resource in the second resource is located is separated from the time slot where the first resource is located in the second resource, there is a maximum number of time slots that can be indicated by the side link control information
  • the third time slot is before the time slot where the first resource is located and the distance from the time slot where the first resource is located is greater than the predetermined processing time length
  • the starting time slot of the monitoring time slot set is the number of time slots that can be indicated by the side link control information before the time slot of the first resource in the second resource and the time slot of the first resource in the second resource.
  • the third time slot with the maximum value, the end time slot of the monitoring time slot set is the second time slot before the time slot where the first resource is located, and the number of time slots corresponding to the predetermined processing time between the time slots where the first resource is located ;
  • the set of monitoring time slots includes the third time slot but does not include the second time slot, and the number of time slots corresponding to the predetermined processing time is predetermined according to the subcarrier spacing.
  • the present application is not limited thereto.
  • the set of monitoring time slots may not include the third time slot or other time slots, or may also include the second time slot.
  • time slot where the first resource in the second resource is located is separated from the time slot where the first resource is located in the second resource, there is a maximum number of time slots that can be indicated by the side link control information and/or
  • the device 1600 for reselecting side link resources the device 1600 for reselecting side link resources:
  • the monitoring unit 1603 monitors the remaining time slots after removing some time slots in the monitoring time slot set when the monitoring time slot set includes one or more continuous time slots; wherein, the part of the time slots includes Time slots for link data and/or time slots for sending uplink data.
  • the preemption detection in the side link resource pool is configured to be disabled, or the preemption detection in the side link resource pool is configured to be enabled and the value of the priority currently sent is less than or equal to the configured or preempted value. configured threshold.
  • the apparatus 1600 for reselecting side link resources may also include other components or modules, and for specific content of these components or modules, reference may be made to related technologies.
  • FIG. 16 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 the present application is not limited thereto.
  • the set of monitoring time slots for resource re-evaluation is determined according to whether the selected first resource has been reserved by the previous side link control information; some time slots that should have been monitored may not be monitored . Therefore, monitoring for resource reselection can be performed on fewer time slots while ensuring sensing accuracy, which can avoid unnecessary power consumption and improve the effect of power saving.
  • An embodiment of the present application provides an apparatus for reselecting side link resources.
  • the apparatus may be, for example, a terminal device, or may be one or some components or components configured on the terminal device, and the content that is the same as that in the embodiment of the second aspect will not be repeated here.
  • FIG. 16 For the configuration of the apparatus for reselecting side link resources, reference may be made to FIG. 16 .
  • the resource determining unit 1601 determines the resource prior to the third resource and corresponding to the third resource according to the feedback information sent last time corresponding to the selected third resource.
  • a monitoring time slot set for resource re-evaluation and/or preemption detection; and the reselection determining unit 1602 determines whether to perform resource reselection in the candidate time slot set according to the monitoring result.
  • the transmission corresponding to the third resource is a retransmission for the same transport block sent last time; a physical side link feedback channel is configured in the side link resource pool and hybrid automatic repeat request feedback is enabled.
  • the monitoring unit 1603 after receiving the feedback information, the monitoring unit 1603 starts to monitor the time slots in the first time slot set including one or more consecutive time slots.
  • the monitoring unit 1603 after receiving the feedback information, the monitoring unit 1603 starts to monitor the time slots in the first time slot set when the feedback information is non-confirmation, and the monitoring time slot set is the first time slot set The third set of time slots in the set; when the feedback information is an acknowledgment, the time slots in the first set of time slots are not monitored, and the set of monitoring time slots is an empty set.
  • the third time slot set is determined according to the time domain position of the third resource, the time domain position of the resource where the feedback information is located, the maximum time length that can be indicated by the side link control information, and the predetermined processing time length.
  • the maximum time length that can be indicated by the side link control information is the maximum number of time slots that can be indicated by it, for example, 31 time slots; the maximum time length can be called an SCI window, as shown in FIG. 7 Show.
  • the predetermined processing time length may be represented by the number of time slots, and the number of time slots is predetermined according to the subcarrier spacing. For specific values, please refer to the aforementioned Table 1 and Table 2.
  • the fourth time slot before the time slot where the third resource is located and separated from the time slot where the third resource is located by the maximum number of time slots that can be indicated by the side link control information is in the time slot where the feedback information is located Before, and the fifth time slot corresponding to the number of time slots corresponding to the predetermined processing time between the time slots where the third resource is located is after the time slot where the feedback information is located, the set of monitoring time slots is the third set of time slots, so The start time slot of the third time slot set is the time slot where the feedback information is located, and the end time slot of the third time slot set is the fifth time slot.
  • the third time slot set does not include the time slot where the feedback information is located and does not include the fifth time slot, and the number of time slots corresponding to the predetermined processing time is predetermined according to the subcarrier spacing.
  • the present application is not limited thereto, for example, other time slots may not be included, or the time slot where the feedback information is located and/or the fifth time slot may be included.
  • the fourth time slot before the time slot where the third resource is located and separated from the time slot where the third resource is located by the maximum number of time slots that can be indicated by the side link control information is in the time slot where the feedback information is located
  • the monitoring time slot set is the first time slot set
  • the start time slot of the first time slot set is the fourth time slot
  • the end time slot of the first time slot set is the same as the third resource
  • the first time slot set includes the fourth time slot but does not include the fifth time slot, and the number of time slots corresponding to the predetermined processing time is predetermined according to the subcarrier spacing.
  • the present application is not limited thereto.
  • the first time slot set may not include the fourth time slot or other time slots, or may also include the fifth time slot.
  • the time slots that overlap with the discontinuous reception inactive period and are not monitored in the case of receipt of acknowledgment are not monitored, but are still monitored. Overlapped time slots during continuous receive activation that are not monitored for acknowledgment of receipt.
  • the monitoring unit 1603 starts to monitor the time slots in the first time slot set including one or more time slots before receiving the feedback information.
  • the first time slot set is determined according to the time domain position of the third resource, the maximum time length that can be indicated by the side link control information, and the predetermined processing time length.
  • the starting time slot of the first time slot set is the maximum number of time slots that can be indicated by the side link control information before the time slot where the third resource is located and separated from the time slot where the third resource is located.
  • the fourth time slot of the first time slot set is the fifth time slot of the number of time slots corresponding to the predetermined processing time between the time slots where the third resource is located.
  • the monitoring unit 1603 continues to monitor the remaining time slots in the first time slot set when the feedback information received is non-confirmation, and the monitoring time slot set is the first time slot set; If the feedback information is an acknowledgment, stop monitoring the remaining time slots in the first time slot set, and the monitoring time slot set is the second time slot set in the first time slot set.
  • the remaining time slots overlapping with the discontinuous reception inactive period, which stop monitoring upon receipt of acknowledgment, are not monitored, but are still monitored Said remaining time slots for which monitoring is stopped in case of receipt of acknowledgments overlapping said discontinuous reception active period.
  • the monitoring time slot set used for resource re-evaluation and/or preemption detection is determined according to the feedback information sent last time corresponding to the selected third resource; time slot. Therefore, monitoring for resource reselection can be performed on fewer time slots while ensuring sensing accuracy, which can avoid unnecessary power consumption and improve the effect of power saving.
  • the embodiment of the present application also provides a communication system, which can be referred to FIG. 1 , and the same content as the embodiments of the first aspect to the fourth aspect will not be described again.
  • the communication system 100 may at least include:
  • the terminal device determines the The monitoring time slot set used for resource re-evaluation; and determining whether to perform resource reselection in the candidate time slot set according to the monitoring result.
  • the communication system 100 may at least include:
  • the terminal device determines the resource re-evaluation and /or a monitoring time slot set for preemption detection; and determining whether to perform resource reselection in the candidate time slot set 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 thereto, and may be other network devices.
  • a network device which may be, for example, a base station, but the present application is not limited thereto, and may be other network devices.
  • FIG. 17 is a schematic diagram of a network device according to an embodiment of the present application.
  • a network device 1700 may include: a processor 1710 (such as a central processing unit CPU) and a memory 1720; the memory 1720 is coupled to the processor 1710.
  • the memory 1720 can store various data; in addition, it also stores a program 1730 for information processing, and executes the program 1730 under the control of the processor 1710 .
  • the network device 1700 may further include: a transceiver 1740 and an antenna 1750 ; wherein, the functions of the above components are similar to those of the prior art, and will not be repeated here. It should be noted that the network device 1700 does not necessarily include all the components shown in FIG. 17 ; in addition, the network device 1700 may also include components not shown in FIG. 17 , 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 thereto, and may be other devices.
  • FIG. 18 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1800 may include a processor 1810 and a memory 1820 ; the memory 1820 stores data and programs, and is coupled to the processor 1810 .
  • this figure is exemplary; other types of structures may also be used in addition to or instead of this structure to implement telecommunications functions or other functions.
  • the processor 1810 may be configured to execute a program to implement the method for reselecting side link resources as described in the embodiment of the first aspect.
  • the processor 1810 may be configured to perform the following control: for the selected first resource, according to whether the selected first resource has been reserved by the first side link control information before the first resource, determine A set of monitoring time slots for resource re-evaluation prior to the resource and corresponding to the first resource; and determining whether to perform resource reselection in the candidate time slot set according to the monitoring result.
  • the processor 1810 may be configured to execute a program to implement the method for reselecting side link resources as described in the embodiment of the second aspect.
  • the processor 1810 may be configured to perform the following control: for the selected third resource, according to the feedback information sent last time corresponding to the selected third resource, determine the A monitoring time slot set corresponding to the resource for resource re-evaluation and/or preemption detection; and determining whether to perform resource reselection in the candidate time slot set according to the monitoring result.
  • the terminal device 1800 may further include: a communication module 1830 , an input unit 1840 , a display 1850 , and a power supply 1860 .
  • a communication module 1830 the terminal device 1800 may further include: a communication module 1830 , an input unit 1840 , a display 1850 , and a power supply 1860 .
  • the functions of the above components are similar to those of the prior art, and will not be repeated here. It should be noted that the terminal device 1800 does not necessarily include all the components shown in FIG. have technology.
  • the embodiment of the present application also provides a computer program, wherein when the program is executed in the terminal device, the program causes the terminal device to perform the side-link resource reorganization described in the embodiments of the first to second aspects. Choose method.
  • the embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables the terminal device to execute the side link resource reselection methods described in the embodiments of the first to second aspects.
  • the above devices and methods in this application can be implemented by hardware, or by combining hardware and software.
  • the present application relates to a computer-readable program that, when executed by a logic component, enables the logic component to realize the above-mentioned device or constituent component, or enables the logic component to realize the above-mentioned various methods or steps.
  • the present application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memories, and the like.
  • the method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in the figure and/or one or more combinations of the functional block diagrams may correspond to each software module or each hardware module of the computer program flow.
  • These software modules may respectively correspond to the steps shown in the figure.
  • These hardware modules for example, can be realized by solidifying these software modules by 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 it can be an integral part of the processor.
  • the processor and storage medium can be located in the 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 large-capacity flash memory device.
  • One or more of the functional blocks described in the accompanying drawings and/or one or more combinations of the functional blocks 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 described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors processor, one or more microprocessors in communication with a DSP, or any other such configuration.
  • a method for reselecting side link resources comprising:
  • the selected first resource For the selected first resource, according to whether the selected first resource has been reserved by the first side link control information before the first resource, determine the A set of monitoring time slots for resource re-evaluation corresponding to the first resource;
  • Supplement 2 The method according to Supplement 1, wherein, in the case that the selected first resource is not reserved by the first side link control information, the monitoring time slot set is based on the first The time domain position of the resource, the maximum time length that can be indicated by the side link control information, and the predetermined processing time length are determined.
  • Supplement 3 The method according to Supplement 2, wherein, the start time slot of the monitoring time slot set is before the time slot where the first resource is located, and is separated from the time slot where the first resource is located.
  • the link control information can indicate the first time slot with the maximum number of time slots, and the end time slot of the monitoring time slot set is the time slot before the time slot where the first resource is located and the time slot where the first resource is located There are second time slots of the number of time slots corresponding to the predetermined processing time at intervals.
  • Supplement 4 The method according to Supplement 3, wherein the set of monitoring time slots includes the first time slot but does not include the second time slot, and the predetermined processing time corresponds to the number of time slots It is predetermined according to the subcarrier spacing.
  • Supplement 5 The method according to any one of Supplements 1 to 4, wherein, in the case where the selected first resource has been reserved by the first side link control information, the method further includes:
  • the terminal device further determines, according to whether the second side link control information corresponding to the selected first resource reserves a second resource, a user before the first resource and corresponding to the first resource A set of monitoring time slots for resource re-evaluation; wherein, the second resource is a resource not reserved by side link control information before the time slot where the first resource is located.
  • Supplement 6 The method according to Supplement 5, wherein the selected first resource has been reserved by the first side link control information and the second resource corresponding to the selected first resource
  • the side link control information reserves one or more of the second resources
  • the set of monitoring time slots can be indicated according to the time domain position of the first resource in the second resources and the side link control information The maximum time length and the time domain position of said first resource, the predetermined processing time length are determined.
  • Supplement 7 The method according to Supplement 6, wherein if there is a side chain before the time slot where the first resource of the second resource is located, and the time slot where the first resource is located in the second resource
  • the third time slot with the maximum number of time slots that can be indicated by the channel control information is before the time slot where the first resource is located, and the interval from the time slot where the first resource is located is greater than the predetermined processing time length, then
  • the starting time slot of the monitoring time slot set is before the time slot where the first resource in the second resource is located, and the time slot where the first resource in the second resource is located is separated by side link control information.
  • the third time slot with the maximum number of indicated time slots, the end time slot of the set of monitoring time slots is the time slot before the time slot where the first resource is located, and has a predetermined processing interval from the time slot where the first resource is located.
  • the second time slot corresponding to the time slot number.
  • Supplement 8 The method according to Supplement 7, wherein the set of monitoring time slots includes the third time slot but does not include the second time slot, and the predetermined processing time corresponds to the number of time slots It is predetermined according to the subcarrier spacing.
  • Supplementary Note 9 The method according to Supplementary Note 6, wherein if there is a side chain before the time slot where the first resource of the second resource is located, and the time slot where the first resource is located in the second resource
  • the third time slot with the maximum number of time slots that can be indicated by the channel control information is after the time slot where the first resource is located, or the interval from the time slot where the first resource is located is less than or equal to the predetermined processing time length , then the set of monitoring time slots is empty.
  • Supplement 10 The method according to Supplement 5, wherein, when the selected first resource has been reserved by the first side link control information and the second resource corresponding to the selected first resource If the side link control information does not reserve at least one second resource, the set of monitoring time slots is empty.
  • Supplementary Note 11 The method according to any one of Supplementary Notes 1 to 10, wherein, when the set of monitoring time slots includes one or more consecutive time slots, the terminal device Monitor the remaining time slots after removing part of the time slots.
  • Supplementary Note 12 The method according to Supplementary Note 11, wherein the partial time slots include time slots for sending side link data and/or time slots for sending uplink data.
  • Supplement 13 The method according to any one of Supplements 1 to 12, wherein the preemption detection in the side link resource pool is configured as disabled.
  • Supplement 14 The method according to any one of Supplements 1 to 12, wherein the preemption detection in the side link resource pool is configured to be enabled (enabled), and the value of the priority currently sent is less than or equal to the configured or pre-configured thresholds.
  • a method for reselecting side link resources comprising:
  • the terminal device determines, according to the feedback information sent last time corresponding to the selected third resource, which is used before the third resource and corresponding to the third resource.
  • Supplementary Note 16 The method according to Supplementary Note 15, wherein the transmission corresponding to the third resource is a retransmission of the last transmission for the same transport block (TB).
  • Supplementary Note 17 The method according to Supplementary Note 15 or 16, wherein, after receiving the feedback information, the terminal device starts to analyze the time slots in the first time slot set including one or more consecutive time slots Monitor.
  • Supplementary Note 18 The method according to Supplementary Note 17, wherein, after receiving the feedback information, the terminal device starts to check the first time slot when the feedback information is a non-acknowledgement (NACK).
  • NACK non-acknowledgement
  • the time slots in the set are monitored, and the monitoring time slot set is the third time slot set in the first time slot set; when the feedback information is an acknowledgment (ACK), the first time slot is not The time slots in the set are monitored.
  • NACK non-acknowledgement
  • Supplement 19 The method according to Supplement 18, wherein the third time slot set can An indicated maximum time length and a predetermined processing time length are determined.
  • Supplement 20 The method according to Supplement 19, wherein, before the time slot where the third resource is located, there is a number of time slots that can be indicated by the side link control information before the time slot where the third resource is located.
  • the fourth time slot with the maximum value is before the time slot where the feedback information is located
  • the fifth time slot with the number of time slots corresponding to the predetermined processing time interval between the time slots where the third resource is located is before the time slot where the feedback information is located
  • the set of monitoring time slots is a third set of time slots
  • the starting time slot of the third set of time slots is the time slot where the feedback information is located
  • the end of the third set of time slots The time slot is the fifth time slot.
  • Supplement 21 The method according to Supplement 20, wherein the third time slot set does not include the time slot where the feedback information is located nor the fifth time slot, and the predetermined processing time corresponds to The number of slots is predetermined according to the subcarrier spacing.
  • Supplement 22 The method according to Supplement 17, wherein, before the time slot where the third resource is located, there is a number of time slots that can be indicated by side link control information before the time slot where the third resource is located If the fourth time slot with the maximum value is after the time slot where the feedback information is located, the monitoring time slot set is the first time slot set, and the starting time slot of the first time slot set is the fourth time slot set. time slots, and the end time slot of the first time slot set is the fifth time slot of the number of time slots corresponding to the predetermined processing time between the time slots where the third resource is located.
  • Supplement 23 The method according to Supplement 22, wherein the first set of time slots includes the fourth time slot but does not include the fifth time slot, and the number of time slots corresponding to the predetermined processing time The number is predetermined according to the subcarrier spacing.
  • Supplementary Note 24 The method according to Supplementary Note 18, wherein, in the case that the terminal device is configured with Discontinuous Reception (DRX), the terminal device does not monitor Overlapping time slots not monitored for acknowledgment received (ACK), but still monitored for time slots not monitored for acknowledgment received (ACK) overlapping with said discontinuous reception (DRX) active period Gap.
  • DRX discontinuous reception
  • Supplement 25 The method according to Supplement 16, wherein, before receiving the feedback information, the terminal device starts to monitor the time slots in the first time slot set including one or more time slots.
  • Supplement 26 The method according to Supplement 25, wherein the first time slot set is based on the time domain position of the third resource, the maximum time length that can be indicated by the side link control information, and the predetermined processing time length It is determined.
  • Supplement 27 The method according to Supplement 26, wherein the starting time slot of the first set of time slots is the interval between the time slot where the third resource is located and the time slot where the third resource is located. There is a fourth time slot with the maximum number of time slots that can be indicated by the side link control information, and the end time slot of the first time slot set is the time slot corresponding to the predetermined processing time at the time slot interval of the third resource.
  • the fifth slot of the number of slots is the method according to Supplement 26, wherein the starting time slot of the first set of time slots is the interval between the time slot where the third resource is located and the time slot where the third resource is located.
  • Supplementary Note 28 The method according to any one of Supplementary Notes 25 to 27, wherein, in the case that the terminal device receives the feedback information as a non-acknowledgment (NACK), it continues to set the first time slot Monitoring the remaining time slots in the monitoring time slot set is the first time slot set; when the feedback information is received as an acknowledgment (ACK), stop monitoring the first time slot set in the first time slot set The remaining time slots are monitored, and the monitoring time slot set is the second time slot set in the first time slot set.
  • NACK non-acknowledgment
  • Supplement 29 The method according to Supplement 28, wherein, in the case where the terminal device is configured with discontinuous reception (DRX), the terminal device does not monitor Overlapping the remaining time slots that stop monitoring on receipt of acknowledgment (ACK), but still monitor the time slots that stop monitoring on receipt of acknowledgment (ACK) that overlap with the active period of discontinuous reception (DRX) the remaining slots.
  • the terminal device does not monitor Overlapping the remaining time slots that stop monitoring on receipt of acknowledgment (ACK), but still monitor the time slots that stop monitoring on receipt of acknowledgment (ACK) that overlap with the active period of discontinuous reception (DRX) the remaining slots.
  • Supplementary Note 30 The method according to any one of Supplementary Notes 15 to 29, wherein, when the set of monitoring time slots includes one or more consecutive time slots, the terminal device Monitor the remaining time slots after removing part of the time slots.
  • Supplementary Note 31 The method according to Supplementary Note 30, wherein the partial time slots include time slots for sending side link data and/or time slots for sending uplink data.
  • Supplement 32 The method according to any one of Supplements 15 to 31, wherein a Physical Side Link Feedback Channel (PSFCH) is configured in the side link resource pool and Hybrid Automatic Repeat Request (HARQ) feedback is enabled (enabled).
  • PSFCH Physical Side Link Feedback Channel
  • HARQ Hybrid Automatic Repeat Request
  • a terminal device including a memory and a processor, the memory stores a computer program, and the processor is configured to execute the computer program to implement the edge as described in any one of Supplements 1 to 32.
  • Link resource reselection method including

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：终端设备对于已选择的第一资源，根据所述已选择的第一资源是否已经被所述第一资源之前的第一边链路控制信息预留，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；以及根据监测结果确定是否在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：对于支持部分感知的终端设备，对于一个已选资源，需要在其之前监测(monitor)对应的时隙，用于重评估和/或资源抢占检测，而在某些场景下这些监测时隙的至少一部分是不必要监测的，这会导致电量消耗增大而造成不必要的浪费。
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：
终端设备对于已选择的第一资源，根据所述已选择的第一资源是否已经被所述第一资源之前的第一边链路控制信息预留，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；以及
根据监测结果确定是否在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：
资源确定单元，其对于已选择的第一资源，根据所述已选择的第一资源是否已经被所述第一资源之前的第一边链路控制信息预留，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；以及
重选确定单元，其根据监测结果确定是否在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：
终端设备对于已选择的第三资源，根据所述已选择的第三资源所对应发送的上一次发送的反馈信息，确定在所述第三资源之前的且与所述第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及
根据监测结果确定是否在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：
资源确定单元，其对于已选择的第三资源，根据所述已选择的第三资源所对应发送的上一次发送的反馈信息，确定在所述第三资源之前的且与所述第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及
重选确定单元，其根据监测结果确定是否在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，提供一种通信系统，包括：
终端设备，其对于已选择的第一资源，根据所述已选择的第一资源是否已经被所述第一资源之前的第一边链路控制信息预留，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；以及根据监测结果确定是否在候选时隙集合进行资源重选；
或者，对于已选择的第三资源，根据所述已选择的第三资源所对应发送的上一次发送的反馈信息，确定在所述第三资源之前的且与所述第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及根据监测结果确定是否在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：根据已选择的第一资源是否已经被之前的边链路控制信息预留，来确定用于资源重评估的监测时隙集合；可以不监测有些原本应该被监测的时隙。因而可以在保证感知精度的情况下对更少的时隙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。
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是连续部分感知的一示意图；
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是资源重评估/抢占检测过程中监测时隙集合的一示意图；
图8是本申请实施例的边链路资源的重选方法的一示意图；
图9是本申请实施例的确定监测时隙集合的一示意图；
图10是本申请实施例的监测时隙集合的一示例图；
图11是本申请实施例的边链路资源的重选方法的一示意图；
图12是本申请实施例的确定监测时隙集合的一示例图；
图13是本申请实施例的确定监测时隙集合的另一示例图；
图14是本申请实施例的确定监测时隙集合的另一示例图；
图15是本申请实施例的确定监测时隙集合的另一示例图；
图16是本申请实施例的边链路资源的重选装置的一示意图；
图17是本申请实施例的网络设备的示意图；
图18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 PCTCN2021092887-appb-000001
检测到SCI，从对应的SCI format 1-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 PCTCN2021092887-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([-31,31])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Rel-17中，为了能够排除相同资源池内其它终端设备进行非周期发送对所选择资源的干扰，定义了一种新的部分感知机制，通过在资源选择触发时间n之后和/或之前、或者候选的Y个时隙的首个时隙y0之前和/或之后的一段时间内连续监测，来排除非周期业务对当前发送产生的干扰，并在连续检测时间结束之后才开始资源选择过程；这种机制被定义为连续部分感知(contiguous partial sensing)。
图4是连续部分感知的一示意图。如图4所示，例如，在资源选择触发时间n之后、候选的Y个时隙的首个时隙y0之前的一段时间内，终端设备可以连续地监测，该段时间可以称为连续部分感知时间(CPSO，Contiguous Partial Sensing Occasion)。
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(Step2)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，是否仍在候选资源集合内，即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，是否仍在候选资源集合内，即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(Step 1)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。
对于一个执行部分感知的终端设备，也需要对一个已选资源进行资源重评估和/或抢占检测，以触发可能的资源重选过程，避免由于其它终端设备选择了与已选资源重叠的资源带来的干扰。在RAN1会议讨论过程中，一个基本达成共识的观点是，对于一个执行部分感知的终端设备，其执行资源重评估/抢占检测也是要基于部分感知过程获得的结果。即要支持基于周期的部分感知(periodic-based partial sensing)以及连续部分感知(contiguous partial sensing)对所选择的资源进行重评估/抢占检测。
对于重评估(重评估的已选资源尚未被SCI指示或预留)，如果MAC层发现当前已选资源不在物理层上报的候选资源集合中，则对当前资源进行重选，在上报的集合中重新选择一个资源用于本次发送；
对于抢占检测(进行抢占检测的已选资源已经被SCI指示或预留)，如果MAC层发现当前已选资源不在物理层上报的候选资源集合中，且通过检测SCI发现与当前已选资源完全或部分重合的其它终端设备的预留资源所对应的优先级高于当前发送的优先级且高于一个配置的门限，则对当前资源进行重选，在上报的集合中重新选择一个资源用于本次发送。
进一步地，关于基于部分感知的资源重评估/抢占检测所需要进行感知的时隙集合， 对于一个已选资源，监测时隙集合可以根据已选资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
例如，对应的需要感知的监测时隙集合的起始位置为当前已选资源所在时隙之前的间隔长度为SCI窗(即SCI中能够指示的最大间隔，例如为31个时隙)的时隙；结束位置为当前已选资源所在时隙之前的间隔长度为一个处理时间的时隙。
图7是资源重评估/抢占检测过程中监测时隙集合的一示意图。如图7所示，对于一个已选资源m，对应的监测时隙集合701(也称为连续部分感知时间CPSO)的起始位置为当前已选资源m所在时隙(如702所示)之前的间隔长度为SCI窗(即SCI中能够指示的最大间隔，例如为31个时隙)的时隙(如703所示)；结束位置为当前已选资源m所在时隙(如702所示)之前的间隔长度为处理时间
Figure PCTCN2021092887-appb-000003
(简写为T proc)的时隙(如704所示)。其中，监测时隙集合701不包括704所示的时隙。
例如，处理时间
Figure PCTCN2021092887-appb-000004
具体取值与子载波间隔(SCS，Sub-Carrier Spacing)相关，例如可以参考下面两个表格，其中
Figure PCTCN2021092887-appb-000005
表1
Figure PCTCN2021092887-appb-000006
表2
Figure PCTCN2021092887-appb-000007
发明人发现：在某些场景下这些监测时隙的至少一部分是不必要监测的，这会导致电量消耗增大而造成不必要的浪费。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8是本申请实施例的边链路资源的重选方法的示意图。如图8所示，该方法包括：
801，终端设备对于已选择的第一资源，根据已选择的第一资源是否已经被第一资源之前的第一边链路控制信息预留，确定在第一资源之前的且与第一资源对应的用于资源重评估的监测时隙集合；以及
802，根据监测结果确定是否在候选时隙集合进行资源重选。
值得注意的是，以上附图8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8的记载。
在一些实施例中，边链路资源池中抢占检测被配置为去使能(disabled)。在另一些实施例中，边链路资源池中抢占检测被配置为使能(enabled)且当前发送的优先级的值小于或等于配置或预配置的门限值，即当前发送的优先级高于预定优先级(优先级的值越小，优先级越高)。由此，在这些场景下不需要进行抢占检测。
在一些实施例中，在已选择的第一资源没有被第一边链路控制信息预留的情况下，监测时隙集合根据第一资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
例如，监测时隙集合的起始时隙为第一资源所在时隙之前的、与第一资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第一时隙，监测时隙集合的结束时隙为第一资源所在时隙之前的、与第一资源所在时隙间隔有预定的处理时间对应的时隙个数的第二时隙。
可选地，监测时隙集合包括第一时隙但不包括第二时隙，预定的处理时间对应的时隙个数根据子载波间隔被预先确定。但本申请不限于此，例如监测时隙集合也可以不包括第一时隙或其他时隙，或者也可以包括第二时隙。
由此，对于一个没有被指示或预留过的资源，它之前需要进行连续部分感知的时隙集合与图7中的监测时隙集合701相同。在该监测时隙集合内，对所有可以进行感知的时隙进行检测。因为当前资源没有被指示或预留过，所以在这些时隙中进行监测，以用于对当前资源以及当前资源之后的所选资源进行重评估。由此，能够保证资源重评估的精度。
在一些实施例中，在已选择的第一资源已经被第一边链路控制信息预留的情况下，终端设备还根据已选择的第一资源所对应的第二边链路控制信息是否预留第二资源，确定在第一资源之前的且与第一资源对应的用于资源重评估的监测时隙集合。其中，第二资源为没有被第一资源所在时隙之前的任意一个边链路控制信息预留的资源，可以将该第二资源称为新资源。
在一些实施例中，在已选择的第一资源已经被第一边链路控制信息预留、且已选择的第一资源所对应的第二边链路控制信息预留一个或多个第二资源的情况下，监测时隙集合根据第二资源中的首个资源的时域位置、边链路控制信息能够指示的最大时间长度和第一资源的时域位置、预定的处理时间长度被确定。
在一些实施例中，边链路控制信息能够指示的最大时间长度为其能够指示的时隙个数最大值，例如为31个时隙；该最大时间长度可以称为SCI窗，如图7所示。预定的处理时间长度也可以参考图7中T proc，例如T proc＝T 3+T proc,0。该预定的处理时间长度可以用时隙个数表示，该时隙个数根据子载波间隔被预先确定。具体数值可以参考前述的表1和表2。
例如，如果第二资源中的首个资源所在时隙之前的、与第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙在第一资源所在时隙之前、且与第一资源所在时隙的间隔大于预定的处理时间长度，则
监测时隙集合的起始时隙为第二资源中的首个资源所在时隙之前的、与第二资源中 的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙，监测时隙集合的结束时隙为第一资源所在时隙之前的、与第一资源所在时隙间隔有预定的处理时间对应的时隙个数的第二时隙。
可选地，监测时隙集合包括第三时隙但不包括第二时隙，预定的处理时间对应的时隙个数根据子载波间隔被预先确定。但本申请不限于此，例如监测时隙集合也可以不包括第三时隙或其他时隙，或者也可以包括第二时隙。
由此，对于一个被指示或预留过、且对应的SCI中包含后续新资源指示的当前所选资源，不需要进行重评估(只能进行抢占检测，但在资源池配置中是disabled的，在这些场景下不需要进行抢占检测)，在上述确定的这些时隙中进行的监测只用于对当前资源对应的SCI中预留的新资源进行资源重评估，需要进行感知的监测时隙集合小于图7中的监测时隙集合701。因而可以在保证感知精度的情况下对更少的时隙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。
图9是本申请实施例的确定监测时隙集合的一示意图。如图9所示，该方法包括：
901，终端设备确定已选择的第一资源是否已经被第一资源之前的第一边链路控制信息预留；如果已选择的第一资源没有被第一边链路控制信息预留，则执行902，否则执行903；
902，根据第一资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度确定第一监测时隙集合；该第一监测时隙集合例如与图7中的监测时隙集合701相同。
图10是本申请实施例的监测时隙集合的一示例图，其中传输数为6。如图10所示，已选择的资源包括资源0至资源6。例如，对于已选资源0，该资源0没有被之前的SCI预留，该资源0对应的SCI指示或预留资源1，在该资源0之前需要对资源0和1进行资源重评估，则针对该资源0和资源1进行资源重评估的监测时隙集合如1001所示。
再例如，对于已选资源3，该资源3没有被之前的SCI预留，该资源3对应的SCI指示或预留资源4和5，在该资源3之前需要对资源3、4和5进行资源重评估，则针对该资源3和资源4、5进行资源重评估的监测时隙集合如1002所示。
因此，对于没有被之前的第一边链路控制信息预留的第一资源(称为第1类资源)，可以在一个监测时隙集合(相对较长)中进行感知。
如图9所示，该方法还包括：
903，确定已选择的第一资源所对应的第二边链路控制信息是否预留第二资源；如 果已选择的第一资源所对应的第二边链路控制信息预留一个或多个第二资源，则执行904，否则执行905；
904，根据第二资源中的首个资源的时域位置、边链路控制信息能够指示的最大时间长度和第一资源的时域位置、预定的处理时间长度确定第二监测时隙集合；该第二监测时隙集合例如小于图7中的监测时隙集合701。
如图10所示，例如，对于已选资源1，该资源1已经被之前的SCI(资源0对应的SCI)预留，该资源1对应的SCI指示或预留资源2，该资源2没有被资源1之前的任何SCI预留(因此为新资源)，在该资源1之前需要对资源2进行资源重评估，则针对该资源2进行资源重评估的监测时隙集合如1003所示。
再例如，对于已选资源4，该资源4已经被之前的SCI(资源3对应的SCI)预留，该资源4对应的SCI指示或预留资源5和6，该资源6没有被资源4之前的任何SCI预留(因此为新资源)，在该资源4之前需要对资源6进行资源重评估，则针对该资源6进行资源重评估的监测时隙集合如1004所示。
在一些实施例中，如果第二资源中的首个资源所在时隙之前的、与第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙在第一资源所在时隙之后，或者与第一资源所在时隙的间隔小于或等于预定的处理时间长度，则监测时隙集合为空。
例如，对于已选资源1，第二资源中的首个资源为资源2，该第三时隙如1005所示。假如该第三时隙1005在资源1所在时隙之后，或者该第三时隙1005与资源1所在时隙的间隔小于处理时间(T proc)，则监测时隙集合1003为空。
因此，对于已经被第一边链路控制信息预留、且所对应的第二边链路控制信息预留一个或多个第二资源的已选择的第一资源(称为第2类资源)，可以在一个监测时隙集合(相对较短)中进行感知。
在一些实施例中，第二监测时隙集合也可以设置为空。即，对于已经被第一边链路控制信息预留、且所对应的第二边链路控制信息预留一个或多个第二资源的已选择的第一资源(称为第2类资源)，在该第一资源之前不进行用于资源重评估的连续部分感知。
如图9所示，该方法还包括：
905，确定监测时隙集合为空。
如图10所示，例如，对于已选资源2，该资源2已经被之前的SCI(资源1对应的SCI)预留，该资源2对应的SCI没有指示或预留资源，因此在该资源2之前不需要进 行资源重评估，则针对该资源2进行资源重评估的监测时隙集合为空。
再例如，对于已选资源5，该资源5已经被之前的SCI(资源3、4对应的SCI)预留，该资源5对应的SCI指示或预留资源6(该资源6被资源5之前的资源4的SCI预留，因此不是新资源)，因此在该资源5之前不需要进行资源重评估，则针对该资源5进行资源重评估的监测时隙集合为空。
再例如，对于已选资源6，该资源6已经被之前的SCI(资源4、5对应的SCI)预留，该资源6对应的SCI没有指示或预留资源，因此在该资源6之前不需要进行资源重评估，则针对该资源6进行资源重评估的监测时隙集合为空。
因此，对于已经被第一边链路控制信息预留、且所对应的第二边链路控制信息没有预留至少一个第二资源的已选择的第一资源(称为第3类资源)，在该第一资源之前不进行用于资源重评估的连续部分感知。
以上对于如何确定监测时隙集合进行了示意性说明，但本申请不限于此。
在一些实施例中，在监测时隙集合包括一个或多个连续时隙的情况下，终端设备对监测时隙集合中除去部分时隙后的剩余时隙进行监测。
例如，由于半双工的限制，终端设备在发送数据时不能进行感知，所述部分时隙包括用于发送边链路数据的时隙和/或用于发送上行数据的时隙。但本申请不限于此，该部分时隙还可以是其他规定或者配置的时隙。
在一些实施例中，对于每个资源，如果在它之前进行了连续部分感知，则可以基于感知结果进行重评估，如果发现所选资源不包含在候选资源集合内，则可以触发资源重选。
在一些实施例中，没被预留过的资源可能是非周期发送的资源，或者也可以是周期发送的首个周期中的首个资源，或者也可以是与前一资源间隔大于预定时间(31个时隙)的资源，或者也可以是进行了资源重选后重选获得的资源且与前一资源间隔大于预定时间(31个时隙)的资源。所述预留例如是指初传或重传对后续重传的预留，也可以是上一周期发送对下一周期发送的预留。
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，根据已选择的第一资源是否已经被之前的边链路控制信息预留，来确定用于资源重评估的监测时隙集合；可以不监测有些原本应该被监测的时隙。因而 可以在保证感知精度的情况下对更少的时隙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。
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11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11所示，该方法包括：
1101，终端设备对于已选择的第三资源，根据已选择的第三资源所对应发送的上一次发送的反馈信息，确定在第三资源之前的且与第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及
1102，根据监测结果确定是否在候选时隙集合进行资源重选。
值得注意的是，以上附图11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11的记载。
在本申请实施例中，监测时隙集合可以是第一时隙集合(例如图7所示的监测时隙集合701)，也可以是第一时隙集合的一部分(例如后述的第二时隙集合或第三时隙集合)，还可以是空集。可以根据反馈信息确定监测时隙集合的起始位置和/或结束位置。
在一些实施例中，边链路资源池中被配置物理边链路反馈信道(PSFCH)、且混合自动重传请求(HARQ)反馈被使能(enabled)。
在一些实施例中，第三资源所对应发送是上一次发送的针对相同传输块(TB)的重传。终端设备可以接收针对上一次发送的反馈信息，例如确认(ACK)和/或非确认(NACK)，该反馈信息可称为HARQ-ACK。
在一些实施例中，终端设备在接收到反馈信息之后，开始对包括一个或多个连续时隙的第一时隙集合中的时隙进行监测。
例如，终端设备在接收到反馈信息之后，在反馈信息为非确认(NACK)的情况下开始对第一时隙集合中的时隙进行监测，该监测时隙集合为第一时隙集合中的第三时隙集合；在反馈信息为确认(ACK)的情况下不对第一时隙集合中的时隙进行监测，该监 测时隙集合为空集。
在一些实施例中，第三时隙集合根据第三资源的时域位置、反馈信息所在资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
在一些实施例中，边链路控制信息能够指示的最大时间长度为其能够指示的时隙个数最大值，例如为31个时隙；该最大时间长度可以称为SCI窗，如图7所示。预定的处理时间长度也可以参考图7中T proc，例如T proc＝T 3+T proc,0。该预定的处理时间长度可以用时隙个数表示，该时隙个数根据子载波间隔被预先确定。具体数值可以参考前述的表1和表2。
例如，在第三资源所在时隙之前的、与第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙在反馈信息所在时隙之前，且与第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙在反馈信息所在时隙之后的情况下，监测时隙集合为第三时隙集合，第三时隙集合的起始时隙为反馈信息所在时隙，第三时隙集合的结束时隙为第五时隙。
可选地，第三时隙集合不包括反馈信息所在时隙也不包括第五时隙，预定的处理时间对应的时隙个数根据子载波间隔被预先确定。本申请不限于此，例如还可以不包括其他时隙，或者包括反馈信息所在时隙和/或第五时隙。
图12是本申请实施例的确定监测时隙集合的一示例图，如图12所示，对于资源0，可以确定监测时隙集合为1201，具体可以参考图7的说明。对于资源1，也可以先暂时确定一个第一时隙集合(如1202和1203所示)，但是在接收到反馈信息(ACK或NACK)之前对第一时隙集合中的第二时隙集合(如1202所示)的时隙不进行监测(如1202所示跳过)。
如图12所示，在接收到NACK之后，开始对该第一时隙集合中的第三时隙集合(如1203所示)中的时隙进行监测。如图12所示，资源1所在时隙之前的、与资源1所在时隙间隔有边链路控制信息能够指示的时隙个数最大值(例如31个时隙)的第四时隙(如12021所示)在NACK所在时隙之前，且与资源1所在时隙间隔有预定的处理时间(T proc)对应的时隙个数的第五时隙(如12031所示)在NACK所在时隙之后，因此，针对资源1，第三时隙集合1203为实际的监测时隙集合，该监测时隙集合的起始时隙为NACK所在时隙，结束时隙为第五时隙(如12031所示)。
在一些实施例中，在第三资源所在时隙之前的、与第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙在反馈信息所在时隙之后的情况下，监 测时隙集合为第一时隙集合，第一时隙集合的起始时隙为第四时隙，第一时隙集合的结束时隙为与第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙。
可选地，第一时隙集合包括第四时隙但不包括第五时隙，预定的处理时间对应的时隙个数根据子载波间隔被预先确定。但本申请不限于此，例如第一时隙集合也可以不包括第四时隙或其他时隙，或者也可以包括第五时隙。
例如，假如资源1所在时隙之前的、与资源1所在时隙间隔有边链路控制信息能够指示的时隙个数最大值(例如31个时隙)的第四时隙(如12021所示)在NACK所在时隙之后，则针对资源1，实际的监测时隙集合为第一时隙集合，该第一时隙集合的起始时隙为第四时隙(如12021所示)，结束时隙为第五时隙(如12031所示)。此时，该实际的监测时隙集合的确定方式与监测时隙集合1201一致。
图13是本申请实施例的确定监测时隙集合的另一示例图，如图13所示，对于资源0，可以确定监测时隙集合为1301，具体可以参考图7的说明。对于资源1，也可以先暂时确定一个第一时隙集合(如1302所示)，但是在接收到反馈信息(ACK或NACK)之前不进行监测(跳过)。
如图13所示，在接收到ACK之后，不对该第一时隙集合(如图1302)中的时隙进行监测，即继续跳过该第一时隙集合(如1302所示)的时隙。因此，针对资源1，实际的监测时隙集合为空。
因此，可以不监测有些原本应该被监测的时隙。可以在保证感知精度的情况下，对更少的时隙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。
在一些实施例中，终端设备作为发送设备需要进行资源选择或重选，因此对监测时隙集合的时隙进行监测，该终端设备也可能同时作为接收设备进行边链路数据的接收。在终端设备配置了非连续接收(DRX)的情况下，所述终端设备不监测与所述非连续接收(DRX)非激活期间重叠的在接收到确认(ACK)的情况下不进行监测的时隙，但仍监测与所述非连续接收(DRX)激活期间重叠的在接收到确认(ACK)的情况下不进行监测的时隙。
即，如果该终端设备同时作为一个接收UE且配置或预配置了非连续接收(DRX)，则该终端设备仅能取消连续部分感知的监测时隙集合中与DRX非激活(inactive)期间重叠(overlap)的时隙的监测，而不能取消连续部分感知的监测时隙集合中与DRX激活(active)期间重叠(overlap)的时隙的监测。
在一些实施例中，终端设备在接收到反馈信息之前，开始对包括一个或多个时隙的第一时隙集合中的时隙进行监测。该第一时隙集合根据第三资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
例如，第一时隙集合的起始时隙为在第三资源所在时隙之前的、与第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙，第一时隙集合的结束时隙为与第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙。
在一些实施例中，终端设备在接收到反馈信息为非确认(NACK)的情况下，继续对第一时隙集合中的剩余时隙进行监测，该监测时隙集合为第一时隙集合；在接收到反馈信息为确认(ACK)的情况下，停止对第一时隙集合中的剩余时隙进行监测，该监测时隙集合为第一时隙集合中的第二时隙集合。
图14是本申请实施例的确定监测时隙集合的另一示例图，如图14所示，对于资源0，可以确定监测时隙集合为1401，具体可以参考图7的说明。对于资源1，也可以先暂时确定一个第一时隙集合(如1402和1403所示)，在接收到反馈信息(ACK或NACK)之前对第一时隙集合中的第二时隙集合(如1402所示)的时隙进行监测。
如图14所示，在接收到NACK之后，继续对该第一时隙集合中的第三时隙集合(如1403所示)的时隙进行监测。如图14所示，资源1所在时隙之前的、与资源1所在时隙间隔有边链路控制信息能够指示的时隙个数最大值(例如31个时隙)的第四时隙(如14021所示)在NACK所在时隙之前，且与资源1所在时隙间隔有预定的处理时间(T proc)对应的时隙个数的第五时隙(如14031所示)在NACK所在时隙之后，因此，针对资源1，包括第二时隙集合(如1402)和第三时隙集合(如1403)的第一时隙集合为实际的监测时隙集合，该监测时隙集合的起始时隙为第四时隙(如14021所示)，结束时隙为第五时隙(如14031所示)。
图15是本申请实施例的确定监测时隙集合的另一示例图，如图15所示，对于资源0，可以确定监测时隙集合为1501，具体可以参考图7的说明。对于资源1，也可以先暂时确定一个第一时隙集合(如1502和1503所示)，在接收到反馈信息(ACK或NACK)之前对第一时隙集合中的第二时隙集合(如1502所示)的时隙进行监测。
如图15所示，在接收到ACK之后，停止(stop)或取消(cancel)对该第一时隙集合中的第三时隙集合(如1503所示)的时隙进行监测。如图15所示，资源1所在时隙之前的、与资源1所在时隙间隔有边链路控制信息能够指示的时隙个数最大值(例如31个时隙)的第四时隙(如15021所示)在ACK所在时隙之前，且与资源1所在时隙 间隔有预定的处理时间(T proc)对应的时隙个数的第五时隙(如15031所示)在ACK所在时隙之后，因此，针对资源1，第二时隙集合(如1502所示)为实际的监测时隙集合，该监测时隙集合的起始时隙为第四时隙(如15021所示)，结束时隙为ACK所在时隙。
因此，可以不监测有些原本应该被监测的时隙。可以在保证感知精度的情况下，对更少的时隙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。
在一些实施例中，终端设备作为发送设备需要进行资源选择或重选，因此对监测时隙集合的时隙进行监测，该终端设备也可能同时作为接收设备进行边链路数据的接收。在终端设备配置了非连续接收(DRX)的情况下，所述终端设备不监测与所述非连续接收(DRX)非激活期间重叠的在接收到确认(ACK)的情况下停止监测的所述剩余时隙，但仍监测与所述非连续接收(DRX)激活期间重叠的在接收到确认(ACK)的情况下停止监测的所述剩余时隙。
即，如果该终端设备同时作为一个接收UE且配置或预配置了非连续接收(DRX)，则该终端设备仅能取消连续部分感知的监测时隙集合中与DRX非激活(inactive)期间重叠(overlap)的时隙的监测，而不能取消连续部分感知的监测时隙集合中与DRX激活(active)期间重叠(overlap)的时隙的监测。
在一些实施例中，在监测时隙集合包括一个或多个连续时隙的情况下，终端设备对监测时隙集合中除去部分时隙后的剩余时隙进行监测。
例如，由于半双工的限制，终端设备在发送数据时不能进行感知，所述部分时隙包括用于发送边链路数据的时隙和/或用于发送上行数据的时隙。但本申请不限于此，该部分时隙还可以是其他规定或者配置的时隙。
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，根据已选择的第三资源所对应发送的上一次发送的反馈信息，来确定用于资源重评估和/或抢占检测的监测时隙集合；可以不监测有些原本应该被监测的时隙。因而可以在保证感知精度的情况下对更少的时隙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。
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，与第一方面的实施例相同的内容不再赘述。
图16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16所示，边链路资源的重选装置1600包括：资源确定单元1601和重选确定单元1602。
资源确定单元1601对于已选择的第一资源，根据已选择的第一资源是否已经被第一资源之前的第一边链路控制信息预留，确定在第一资源之前的且与第一资源对应的用于资源重评估的监测时隙集合；以及
重选确定单元1602根据监测结果确定是否在候选时隙集合进行资源重选。
在一些实施例中，在已选择的第一资源没有被第一边链路控制信息预留的情况下，监测时隙集合根据第一资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
在一些实施例中，边链路控制信息能够指示的最大时间长度为其能够指示的时隙个数最大值，例如为31个时隙；该最大时间长度可以称为SCI窗，如图7所示。预定的处理时间长度也可以参考图7中T proc，例如T proc＝T 3+T proc,0。该预定的处理时间长度可以用时隙个数表示，该时隙个数根据子载波间隔被预先确定。具体数值可以参考前述的表1和表2。
在一些实施例中，监测时隙集合的起始时隙为第一资源所在时隙之前的、与第一资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第一时隙，监测时隙集合的结束时隙为第一资源所在时隙之前的、与第一资源所在时隙间隔有预定的处理时间对应的时隙个数的第二时隙；
可选地，监测时隙集合包括第一时隙但不包括第二时隙，预定的处理时间对应的时隙个数根据子载波间隔被预先确定。但本申请不限于此，例如监测时隙集合也可以不包括第一时隙或其他时隙，或者也可以包括第二时隙。
在一些实施例中，资源确定单元1601还用于：在已选择的第一资源已经被第一边链路控制信息预留的情况下，根据已选择的第一资源所对应的第二边链路控制信息是否预留第二资源，确定在第一资源之前的且与第一资源对应的用于资源重评估的监测时隙集合；其中，第二资源为没有被第一资源所在时隙之前的边链路控制信息预留的资源。
在一些实施例中，在已选择的第一资源已经被第一边链路控制信息预留、且已选择的第一资源所对应的第二边链路控制信息预留一个或多个第二资源的情况下，监测时隙集合根据第二资源中的首个资源的时域位置、边链路控制信息能够指示的最大时间长度和第一资源的时域位置、预定的处理时间长度被确定。
在一些实施例中，如果第二资源中的首个资源所在时隙之前的、与第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙在第一资源所在时隙之前、且与第一资源所在时隙的间隔大于预定的处理时间长度，则
监测时隙集合的起始时隙为第二资源中的首个资源所在时隙之前的、与第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙，监测时隙集合的结束时隙为第一资源所在时隙之前的、与第一资源所在时隙间隔有预定的处理时间对应的时隙个数的第二时隙；
可选地，监测时隙集合包括第三时隙但不包括第二时隙，预定的处理时间对应的时隙个数根据子载波间隔被预先确定。但本申请不限于此，例如监测时隙集合也可以不包括第三时隙或其他时隙，或者也可以包括第二时隙。
在一些实施例中，如果第二资源中的首个资源所在时隙之前的、与第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙在第一资源所在时隙之后，或者与第一资源所在时隙的间隔小于或等于预定的处理时间长度，则监测时隙集合为空；和/或
在已选择的第一资源已经被第一边链路控制信息预留、且已选择的第一资源所对应的第二边链路控制信息没有预留至少一个第二资源的情况下，监测时隙集合为空。
在一些实施例中，如图16所示，边链路资源的重选装置1600：
监测单元1603在监测时隙集合包括一个或多个连续时隙的情况下，对监测时隙集合中除去部分时隙后的剩余时隙进行监测；其中，所述部分时隙包括用于发送边链路数据的时隙和/或用于发送上行数据的时隙。
在一些实施例中，边链路资源池中抢占检测被配置为去使能，或者，边链路资源池中抢占检测被配置为使能且当前发送的优先级的值小于或等于配置或预配置的门限值。
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1600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16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，根据已选择的第一资源是否已经被之前的边链路控制信息预留，来确定用于资源重评估的监测时隙集合；可以不监测有些原本应该被监测的时隙。因而可以在保证感知精度的情况下对更少的时隙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。
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，与第二方面的实施例相同的内容不再赘述。该边链路资源的重选装置的构成可以参考图16。
在一些实施例中，资源确定单元1601对于已选择的第三资源，根据已选择的第三资源所对应发送的上一次发送的反馈信息，确定在第三资源之前的且与第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及重选确定单元1602根据监测结果确定是否在候选时隙集合进行资源重选。
在一些实施例中，第三资源所对应发送是上一次发送的针对相同传输块的重传；边链路资源池中被配置物理边链路反馈信道且混合自动重传请求反馈被使能。
在一些实施例中，监测单元1603在接收到反馈信息之后，开始对包括一个或多个连续时隙的第一时隙集合中的时隙进行监测。
在一些实施例中，监测单元1603在接收到反馈信息之后，在反馈信息为非确认的情况下开始对第一时隙集合中的时隙进行监测，监测时隙集合为该第一时隙集合中的第三时隙集合；在反馈信息为确认的情况下不对第一时隙集合中的时隙进行监测，监测时隙集合为空集。
在一些实施例中，第三时隙集合根据第三资源的时域位置、反馈信息所在资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
在一些实施例中，边链路控制信息能够指示的最大时间长度为其能够指示的时隙个 数最大值，例如为31个时隙；该最大时间长度可以称为SCI窗，如图7所示。预定的处理时间长度也可以参考图7中T proc，例如T proc＝T 3+T proc,0。该预定的处理时间长度可以用时隙个数表示，该时隙个数根据子载波间隔被预先确定。具体数值可以参考前述的表1和表2。
在一些实施例中，在第三资源所在时隙之前的、与第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙在反馈信息所在时隙之前，且与第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙在反馈信息所在时隙之后的情况下，监测时隙集合为第三时隙集合，所述第三时隙集合的起始时隙为反馈信息所在时隙，所述第三时隙集合的结束时隙为第五时隙。
可选地，第三时隙集合不包括反馈信息所在时隙也不包括第五时隙，预定的处理时间对应的时隙个数根据子载波间隔被预先确定。本申请不限于此，例如还可以不包括其他时隙，或者包括反馈信息所在时隙和/或第五时隙。
在一些实施例中，在第三资源所在时隙之前的、与第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙在反馈信息所在时隙之后的情况下，监测时隙集合为第一时隙集合，所述第一时隙集合的起始时隙为第四时隙，所述第一时隙集合的结束时隙为与第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙。
可选地，第一时隙集合包括第四时隙但不包括第五时隙，预定的处理时间对应的时隙个数根据子载波间隔被预先确定。但本申请不限于此，例如第一时隙集合也可以不包括第四时隙或其他时隙，或者也可以包括第五时隙。
在一些实施例中，在终端设备配置了非连续接收的情况下，不监测与非连续接收非激活期间重叠的在接收到确认的情况下不进行监测的时隙，但仍监测与所述非连续接收激活期间重叠的在接收到确认的情况下不进行监测的时隙。
在一些实施例中，监测单元1603在接收到反馈信息之前，开始对包括一个或多个时隙的第一时隙集合中的时隙进行监测。
在一些实施例中，第一时隙集合根据第三资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
在一些实施例中，第一时隙集合的起始时隙为在第三资源所在时隙之前的、与第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙，第一时隙集合的结束时隙为与第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五 时隙。
在一些实施例中，监测单元1603在接收到反馈信息为非确认的情况下，继续对第一时隙集合中的剩余时隙进行监测，监测时隙集合为第一时隙集合；在接收到反馈信息为确认的情况下，停止对第一时隙集合中的剩余时隙进行监测，监测时隙集合为第一时隙集合中的第二时隙集合。
在一些实施例中，在终端设备配置了非连续接收的情况下，不监测与所述非连续接收非激活期间重叠的在接收到确认的情况下停止监测的所述剩余时隙，但仍监测与所述非连续接收激活期间重叠的在接收到确认的情况下停止监测的所述剩余时隙。
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，根据已选择的第三资源所对应发送的上一次发送的反馈信息，来确定用于资源重评估和/或抢占检测的监测时隙集合；可以不监测有些原本应该被监测的时隙。因而可以在保证感知精度的情况下对更少的时隙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。
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，其对于已选择的第一资源，根据已选择的第一资源是否已经被第一资源之前的第一边链路控制信息预留，确定在第一资源之前的且与第一资源对应的用于资源重评估的监测时隙集合；以及根据监测结果确定是否在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，其对于已选择的第三资源，根据已选择的第三资源所对应发送的上一次发送的反馈信息，确定在第三资源之前的且与第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及根据监测结果确定是否在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17是本申请实施例的网络设备的构成示意图。如图17所示，网络设备1700可 以包括：处理器1710(例如中央处理器CPU)和存储器1720；存储器1720耦合到处理器1710。其中该存储器1720可存储各种数据；此外还存储信息处理的程序1730，并且在处理器1710的控制下执行该程序1730。
此外，如图17所示，网络设备1700还可以包括：收发机1740和天线1750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1700也并不是必须要包括图17中所示的所有部件；此外，网络设备1700还可以包括图17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18是本申请实施例的终端设备的示意图。如图18所示，该终端设备1800可以包括处理器1810和存储器1820；存储器1820存储有数据和程序，并耦合到处理器1810。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1810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1810可以被配置为进行如下的控制：对于已选择的第一资源，根据已选择的第一资源是否已经被第一资源之前的第一边链路控制信息预留，确定在第一资源之前的且与第一资源对应的用于资源重评估的监测时隙集合；以及根据监测结果确定是否在候选时隙集合进行资源重选。
再例如，处理器1810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1810可以被配置为进行如下的控制：对于已选择的第三资源，根据已选择的第三资源所对应发送的上一次发送的反馈信息，确定在第三资源之前的且与第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及根据监测结果确定是否在候选时隙集合进行资源重选。
如图18所示，该终端设备1800还可以包括：通信模块1830、输入单元1840、显示器1850、电源1860。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1800也并不是必须要包括图18中所示的所有部件，上述部件并不是必需的；此外，终端设备1800还可以包括图18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二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二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：
终端设备对于已选择的第一资源，根据所述已选择的第一资源是否已经被所述第一资源之前的第一边链路控制信息预留，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；以及
根据监测结果确定是否在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，在所述已选择的第一资源没有被第一边链路控制信息预留的情况下，所述监测时隙集合根据所述第一资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
附记3.根据附记2所述的方法，其中，所述监测时隙集合的起始时隙为所述第一资源所在时隙之前的、与所述第一资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第一时隙，所述监测时隙集合的结束时隙为所述第一资源所在时隙之前的、与所述第一资源所在时隙间隔有预定的处理时间对应的时隙个数的第二时隙。
附记4.根据附记3所述的方法，其中，所述监测时隙集合包括所述第一时隙但不包括所述第二时隙，所述预定的处理时间对应的时隙个数根据子载波间隔被预先确定。
附记5.根据附记1至4任一项所述的方法，其中，在所述已选择的第一资源已经被第一边链路控制信息预留的情况下，所述方法还包括：
所述终端设备还根据所述已选择的第一资源所对应的第二边链路控制信息是否预留第二资源，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；其中，所述第二资源为没有被所述第一资源所在时隙之前的边链路控制信息预留的资源。
附记6.根据附记5所述的方法，其中，在所述已选择的第一资源已经被第一边链路控制信息预留、且所述已选择的第一资源所对应的第二边链路控制信息预留一个或多个所述第二资源的情况下，所述监测时隙集合根据所述第二资源中的首个资源的时域位置、边链路控制信息能够指示的最大时间长度和所述第一资源的时域位置、预定的处理时间长度被确定。
附记7.根据附记6所述的方法，其中，如果所述第二资源中的首个资源所在时隙之前的、与所述第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙在所述第一资源所在时隙之前、且与所述第一资源所在时隙的间隔大于预定的处理时间长度，则
所述监测时隙集合的起始时隙为所述第二资源中的首个资源所在时隙之前的、与所述第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值 的第三时隙，所述监测时隙集合的结束时隙为所述第一资源所在时隙之前的、与所述第一资源所在时隙间隔有预定的处理时间对应的时隙个数的第二时隙。
附记8.根据附记7所述的方法，其中，所述监测时隙集合包括所述第三时隙但不包括所述第二时隙，所述预定的处理时间对应的时隙个数根据子载波间隔被预先确定。
附记9.根据附记6所述的方法，其中，如果所述第二资源中的首个资源所在时隙之前的、与所述第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙在所述第一资源所在时隙之后，或者与所述第一资源所在时隙的间隔小于或等于所述预定的处理时间长度，则所述监测时隙集合为空。
附记10.根据附记5所述的方法，其中，在所述已选择的第一资源已经被第一边链路控制信息预留、且所述已选择的第一资源所对应的第二边链路控制信息没有预留至少一个所述第二资源的情况下，所述监测时隙集合为空。
附记11.根据附记1至10任一项所述的方法，其中，在所述监测时隙集合包括一个或多个连续时隙的情况下，所述终端设备对所述监测时隙集合中除去部分时隙后的剩余时隙进行监测。
附记12.根据附记11所述的方法，其中，所述部分时隙包括用于发送边链路数据的时隙和/或用于发送上行数据的时隙。
附记13.根据附记1至12任一项所述的方法，其中，边链路资源池中抢占检测被配置为去使能(disabled)。
附记14.根据附记1至12任一项所述的方法，其中，所述边链路资源池中抢占检测被配置为使能(enabled)且当前发送的优先级的值小于或等于配置或预配置的门限值。
附记15.一种边链路资源的重选方法，包括：
终端设备对于已选择的第三资源，根据所述已选择的第三资源所对应发送的上一次发送的反馈信息，确定在所述第三资源之前的且与所述第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及
根据监测结果确定是否在候选时隙集合进行资源重选。
附记16.根据附记15所述的方法，其中，所述第三资源所对应发送是所述上一次发送的针对相同传输块(TB)的重传。
附记17.根据附记15或16所述的方法，其中，所述终端设备在接收到所述反馈信息之后，开始对包括一个或多个连续时隙的第一时隙集合中的时隙进行监测。
附记18.根据附记17所述的方法，其中，所述终端设备在接收到所述反馈信息之 后，在所述反馈信息为非确认(NACK)的情况下开始对所述第一时隙集合中的时隙进行监测，所述监测时隙集合为所述第一时隙集合中的第三时隙集合；在所述反馈信息为确认(ACK)的情况下不对所述第一时隙集合中的时隙进行监测。
附记19.根据附记18所述的方法，其中，所述第三时隙集合根据所述第三资源的时域位置、所述反馈信息所在资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
附记20.根据附记19所述的方法，其中，在所述第三资源所在时隙之前的、与所述第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙在所述反馈信息所在时隙之前，且与所述第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙在所述反馈信息所在时隙之后的情况下，所述监测时隙集合为第三时隙集合，所述第三时隙集合的起始时隙为所述反馈信息所在时隙，所述第三时隙集合的结束时隙为所述第五时隙。
附记21.根据附记20所述的方法，其中，所述第三时隙集合不包括所述反馈信息所在时隙也不包括所述第五时隙，所述预定的处理时间对应的时隙个数根据子载波间隔被预先确定。
附记22.根据附记17所述的方法，其中，在所述第三资源所在时隙之前的、与所述第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙在所述反馈信息所在时隙之后的情况下，所述监测时隙集合为第一时隙集合，所述第一时隙集合的起始时隙为所述第四时隙，所述第一时隙集合的结束时隙为与所述第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙。
附记23.根据附记22所述的方法，其中，所述第一时隙集合包括所述第四时隙但不包括所述第五时隙，所述预定的处理时间对应的时隙个数根据子载波间隔被预先确定。
附记24.根据附记18所述的方法，其中，在所述终端设备配置了非连续接收(DRX)的情况下，所述终端设备不监测与所述非连续接收(DRX)非激活期间重叠的在接收到确认(ACK)的情况下不进行监测的时隙，但仍监测与所述非连续接收(DRX)激活期间重叠的在接收到确认(ACK)的情况下不进行监测的时隙。
附记25.根据附记16所述的方法，其中，所述终端设备在接收到所述反馈信息之前，开始对包括一个或多个时隙的第一时隙集合中的时隙进行监测。
附记26.根据附记25所述的方法，其中，所述第一时隙集合根据所述第三资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
附记27.根据附记26所述的方法，其中，所述第一时隙集合的起始时隙为在所述第三资源所在时隙之前的、与所述第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙，所述第一时隙集合的结束时隙为与所述第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙。
附记28.根据附记25至27任一项所述的方法，其中，所述终端设备在接收到所述反馈信息为非确认(NACK)的情况下，继续对所述第一时隙集合中的剩余时隙进行监测，所述监测时隙集合为所述第一时隙集合；在接收到所述反馈信息为确认(ACK)的情况下，停止对所述第一时隙集合中的剩余时隙进行监测，所述监测时隙集合为所述第一时隙集合中的第二时隙集合。
附记29.根据附记28所述的方法，其中，在所述终端设备配置了非连续接收(DRX)的情况下，所述终端设备不监测与所述非连续接收(DRX)非激活期间重叠的在接收到确认(ACK)的情况下停止监测的所述剩余时隙，但仍监测与所述非连续接收(DRX)激活期间重叠的在接收到确认(ACK)的情况下停止监测的所述剩余时隙。
附记30.根据附记15至29任一项所述的方法，其中，在所述监测时隙集合包括一个或多个连续时隙的情况下，所述终端设备对所述监测时隙集合中除去部分时隙后的剩余时隙进行监测。
附记31.根据附记30所述的方法，其中，所述部分时隙包括用于发送边链路数据的时隙和/或用于发送上行数据的时隙。
附记32.根据附记15至31任一项所述的方法，其中，边链路资源池中被配置物理边链路反馈信道(PSFCH)且混合自动重传请求(HARQ)反馈被使能(enabled)。
附记33.一种终端设备，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32任一项所述的边链路资源的重选方法。

Claims (20)

  1. 一种边链路资源的重选装置，包括：
    资源确定单元，其对于已选择的第一资源，根据所述已选择的第一资源是否已经被所述第一资源之前的第一边链路控制信息预留，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；以及
    重选确定单元，其根据监测结果确定是否在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，在所述已选择的第一资源没有被第一边链路控制信息预留的情况下，所述监测时隙集合根据所述第一资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定；
    其中，所述监测时隙集合的起始时隙为所述第一资源所在时隙之前的、与所述第一资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第一时隙，所述监测时隙集合的结束时隙为所述第一资源所在时隙之前的、与所述第一资源所在时隙间隔有预定的处理时间对应的时隙个数的第二时隙。
  3. 根据权利要求1所述的装置，其中，所述资源确定单元还用于：在所述已选择的第一资源已经被第一边链路控制信息预留的情况下，根据所述已选择的第一资源所对应的第二边链路控制信息是否预留第二资源，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；其中，所述第二资源为没有被所述第一资源所在时隙之前的边链路控制信息预留的资源。
  4. 根据权利要求3所述的装置，其中，在所述已选择的第一资源已经被第一边链路控制信息预留、且所述已选择的第一资源所对应的第二边链路控制信息预留一个或多个所述第二资源的情况下，所述监测时隙集合根据所述第二资源中的首个资源的时域位置、边链路控制信息能够指示的最大时间长度和所述第一资源的时域位置、预定的处理时间长度被确定。
  5. 根据权利要求4所述的装置，其中，如果所述第二资源中的首个资源所在时隙之前的、与所述第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙在所述第一资源所在时隙之前、且与所述第一资源所在时隙的间隔大于预定的处理时间长度，则
    所述监测时隙集合的起始时隙为所述第二资源中的首个资源所在时隙之前的、与所 述第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙，所述监测时隙集合的结束时隙为所述第一资源所在时隙之前的、与所述第一资源所在时隙间隔有预定的处理时间对应的时隙个数的第二时隙。
  6. 根据权利要求4所述的装置，其中，如果所述第二资源中的首个资源所在时隙之前的、与所述第二资源中的首个资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第三时隙在所述第一资源所在时隙之后，或者与所述第一资源所在时隙的间隔小于或等于所述预定的处理时间长度，则所述监测时隙集合为空；和/或
    在所述已选择的第一资源已经被第一边链路控制信息预留、且所述已选择的第一资源所对应的第二边链路控制信息没有预留至少一个所述第二资源的情况下，所述监测时隙集合为空。
  7. 根据权利要求1所述的装置，其中，所述装置还包括：
    监测单元，其在所述监测时隙集合包括一个或多个连续时隙的情况下，对所述监测时隙集合中除去部分时隙后的剩余时隙进行监测；其中，所述部分时隙包括用于发送边链路数据的时隙和/或用于发送上行数据的时隙。
  8. 根据权利要求1所述的装置，其中，边链路资源池中抢占检测被配置为去使能，或者，所述边链路资源池中抢占检测被配置为使能且当前发送的优先级的值小于或等于配置或预配置的门限值。
  9. 一种边链路资源的重选装置，包括：
    资源确定单元，其对于已选择的第三资源，根据所述已选择的第三资源所对应发送的上一次发送的反馈信息，确定在所述第三资源之前的且与所述第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及
    重选确定单元，其根据监测结果确定是否在候选时隙集合进行资源重选。
  10. 根据权利要求9所述的装置，其中，所述第三资源所对应发送是所述上一次发送的针对相同传输块的重传；边链路资源池中被配置物理边链路反馈信道且混合自动重传请求反馈被使能。
  11. 根据权利要求9所述的装置，其中，所述装置还包括：
    监测单元，其在接收到所述反馈信息之后，开始对包括一个或多个连续时隙的第一时隙集合中的时隙进行监测。
  12. 根据权利要求11所述的装置，其中，所述监测单元在接收到所述反馈信息之后，在所述反馈信息为非确认的情况下开始对所述第一时隙集合中的时隙进行监测，所 述监测时隙集合为所述第一时隙集合中的第三时隙集合；在所述反馈信息为确认的情况下不对所述第一时隙集合中的时隙进行监测。
  13. 根据权利要求12所述的装置，其中，所述第三时隙集合根据所述第三资源的时域位置、所述反馈信息所在资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定。
  14. 根据权利要求13所述的装置，其中，在所述第三资源所在时隙之前的、与所述第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙在所述反馈信息所在时隙之前，且与所述第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙在所述反馈信息所在时隙之后的情况下，所述监测时隙集合为所述第三时隙集合，所述第三时隙集合的起始时隙为所述反馈信息所在时隙，所述第三时隙集合的结束时隙为所述第五时隙；
    在所述第三资源所在时隙之前的、与所述第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙在所述反馈信息所在时隙之后的情况下，所述监测时隙集合为所述第一时隙集合，所述第一时隙集合的起始时隙为所述第四时隙，所述第一时隙集合的结束时隙为与所述第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙。
  15. 根据权利要求12所述的装置，其中，在终端设备配置了非连续接收的情况下，不监测与所述非连续接收非激活期间重叠的在接收到确认的情况下不进行监测的时隙，但仍监测与所述非连续接收激活期间重叠的在接收到确认的情况下不进行监测的时隙。
  16. 根据权利要求9所述的装置，其中，所述装置还包括：
    监测单元，其在接收到所述反馈信息之前，开始对包括一个或多个连续时隙的第一时隙集合中的时隙进行监测。
  17. 根据权利要求16所述的装置，其中，所述第一时隙集合根据所述第三资源的时域位置、边链路控制信息能够指示的最大时间长度和预定的处理时间长度被确定；
    其中，所述第一时隙集合的起始时隙为在所述第三资源所在时隙之前的、与所述第三资源所在时隙间隔有边链路控制信息能够指示的时隙个数最大值的第四时隙，所述第一时隙集合的结束时隙为与所述第三资源所在时隙间隔有预定的处理时间对应的时隙个数的第五时隙。
  18. 根据权利要求16所述的装置，其中，所述监测单元在接收到所述反馈信息为非确认的情况下，继续对所述第一时隙集合中的剩余时隙进行监测，所述监测时隙集合 为所述第一时隙集合；在接收到所述反馈信息为确认的情况下，停止对所述第一时隙集合中的剩余时隙进行监测，所述监测时隙集合为所述第一时隙集合中的第二时隙集合。
  19. 根据权利要求18所述的装置，其中，在终端设备配置了非连续接收的情况下，不监测与所述非连续接收非激活期间重叠的在接收到确认的情况下停止监测的所述剩余时隙，但仍监测与所述非连续接收激活期间重叠的在接收到确认的情况下停止监测的所述剩余时隙。
  20. 一种通信系统，包括：
    终端设备，其对于已选择的第一资源，根据所述已选择的第一资源是否已经被所述第一资源之前的第一边链路控制信息预留，确定在所述第一资源之前的且与所述第一资源对应的用于资源重评估的监测时隙集合；以及根据监测结果确定是否在候选时隙集合进行资源重选；
    或者，对于已选择的第三资源，根据所述已选择的第三资源所对应发送的上一次发送的反馈信息，确定在所述第三资源之前的且与所述第三资源对应的用于资源重评估和/或抢占检测的监测时隙集合；以及根据监测结果确定是否在候选时隙集合进行资源重选。
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