WO2023077356A1 - 资源重选方法、设备间协作方法以及装置 - Google Patents

资源重选方法、设备间协作方法以及装置 Download PDF

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WO2023077356A1
WO2023077356A1 PCT/CN2021/128691 CN2021128691W WO2023077356A1 WO 2023077356 A1 WO2023077356 A1 WO 2023077356A1 CN 2021128691 W CN2021128691 W CN 2021128691W WO 2023077356 A1 WO2023077356 A1 WO 2023077356A1
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resource
resources
preferred
cooperation information
reselection
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PCT/CN2021/128691
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English (en)
French (fr)
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张健
纪鹏宇
李国荣
王昕�
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富士通株式会社
张健
纪鹏宇
李国荣
王昕�
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Priority to PCT/CN2021/128691 priority Critical patent/WO2023077356A1/zh
Publication of WO2023077356A1 publication Critical patent/WO2023077356A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the embodiment of the present application relates to the technical field of communications.
  • V2X Vehicle to Everything
  • the physical channels defined by Rel-16NR V2X include Physical Sidelink Control Channel (PSCCH, Physical Sidelink Control Channel), Physical Sidelink Shared Channel (PSSCH, Physical Sidelink Shared Channel) and Physical Sidelink Feedback Channel (PSFCH, Physical Sidelink Feedback Channel).
  • PSCCH carries 1st stage SCI (Sidelink Control Informaiton), and 1st stage SCI is mainly used to reserve resources.
  • PSSCH carries 2nd stage SCI and transport block (TB, Transport Block), where 2nd stage SCI is mainly used for TB demodulation.
  • PSFCH carries side link feedback information (HARQ-ACK).
  • NR V2X defines two working modes. For NR V2X mode 1 (mode 1), the resources used by the device for V2X communication are scheduled or configured by the base station through the NR Uu link. For NR V2X mode 2 (mode 2), the device can independently select time-frequency resources for V2X communication based on the sensing results.
  • NR V2X supports re-evaluation (re-evaluation) and pre-emption (pre-emption).
  • the device pre-selects or reserves resources for transmission, it can continuously detect whether the above-mentioned resources are still suitable for transmission.
  • the upper layer of the device (such as the medium access control MAC layer) provides the physical layer with a resource set (r 0 , r 1 , r 2 ,...) to be re-evaluated and/or a resource set to be pre-evaluated -emption detected resource set (r′ 0 , r′ 1 , r′ 2 ,).
  • the physical layer of the device performs re-evaluation detection and/or pre-emption detection on resources that have not been sent based on perception.
  • the device triggers resource reselection when a condition is satisfied, wherein the resource reselection may be triggered by re-evaluation or pre-emption.
  • the device detects pre-selected but unreserved resources, and when the resource is not a candidate resource reported to the upper layer, the device performs resource reselection.
  • the device detects the resources that have been reserved by itself, and when the resources may be strongly interfered by resources reserved with higher priority from other devices, the device performs resource reselection.
  • inter-device collaboration becomes one of the research contents of Rel-17 side links.
  • the application scenarios of Rel-17 side links are not limited to V2X, and can be extended to wider side link scenarios such as public security, commercial services, and D2D (device-to-device).
  • the collaboration information may indicate (or include) resource information, that is, indicate a set of resources.
  • the cooperation information may indicate that device A prefers resources and/or does not prefer resources obtained based on perception.
  • device A sends non-preferred resources or preferred resources to device B, after device B excludes all candidate resources overlapping with non-preferred resources , or, after acquiring candidate resources that overlap with the preferred resource, the number of candidate resources obtained may not meet the minimum number requirement. In this case, it may be necessary to supplement some candidate resources overlapping with non-preferred resources or candidate resources not belonging to preferred resources, so that the number of candidate resources meets the minimum number requirement.
  • device B will make a judgment that resource reselection is not required for the first resource, thus generating "device A wants to Instruct device B to perform resource reselection, but device B does not perform resource reselection according to device A's instruction" conflict, so that the cooperation information is not used.
  • embodiments of the present application provide a resource reselection method, an inter-device collaboration method, and an apparatus.
  • a resource reselection method including:
  • the second device receives the cooperation information sent by the first device; wherein the cooperation information indicates preferred resources and/or no preferred resources; and
  • the second device determines whether to perform resource reselection on the first resource at least according to the cooperation information.
  • a resource reselection device including:
  • a receiving unit which receives cooperation information sent by the first device; wherein the cooperation information indicates preferred resources and/or no preferred resources;
  • the processing unit is configured to determine whether to perform resource reselection on the first resource at least according to the cooperation information for the first resource that requires re-evaluation or preemption detection.
  • a method for inter-device collaboration including:
  • the first device generates cooperation information based on its own perception results, where the cooperation information indicates preferred resources and/or no preferred resources;
  • the first device sends the cooperation information to the second device; wherein, the cooperation information is used by the second device to determine whether to perform resource reselection on the first resource requiring re-evaluation or preemption detection.
  • an apparatus for collaboration between devices including:
  • a generating unit which generates cooperation information based on its own perception results, wherein the cooperation information indicates preferred resources and/or no preferred resources;
  • a sending unit configured to send the cooperation information to a second device; wherein the cooperation information is used by the second device to determine whether to perform resource reselection on the first resource requiring re-evaluation or preemption detection.
  • a communication system including:
  • the first device generates cooperation information based on its own perception results, wherein the cooperation information indicates preferred resources and/or no preferred resources, and sends the cooperation information to a second device;
  • the second device receives the cooperation information sent by the first device, and, for the first resource requiring re-evaluation or preemption detection, determines whether to perform resource reselection on the first resource at least according to the cooperation information.
  • One of the beneficial effects of the embodiments of the present application is that: for a first resource requiring re-evaluation or preemption detection, it is determined at least according to cooperation information whether to perform resource reselection on the first resource. In this way, the problem of inconsistency of understanding between the two cooperating devices can be avoided, and the accuracy and effectiveness of the collaboration between the devices can be improved.
  • Fig. 1 is the schematic diagram of the communication system of the embodiment of the present application.
  • FIG. 2 is an example diagram of collaboration between devices
  • FIG. 3 is a schematic diagram of a resource reselection method according to an embodiment of the present application.
  • Fig. 4 is a schematic diagram of supplementary resources of the embodiment of the present application.
  • FIG. 5 is a schematic diagram of a method for collaboration between devices according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a resource reselection device according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an apparatus for collaboration between devices according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a network device according to an embodiment of the present application.
  • FIG. 9 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.).
  • Node B 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 particular 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 and 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 may both perform side link transmission within the coverage area of the network device 101 to implement side link communication, or both may perform side link transmission outside the coverage area of the network device 101 to implement side link communication.
  • 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 side link communication.
  • 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.
  • the device selects and reselects resources based on its own sensing result, which can avoid interference or collision between devices to a certain extent.
  • collision issues can still occur. For example, the presence of hidden node problems can lead to collisions.
  • Fig. 2 is an example diagram of cooperation between devices, which schematically illustrates the problem of hidden nodes.
  • device B sends side link information to device A, and there is an interfering device C around device A. Since device B cannot perceive device C, the transmission of device B will be interfered by device C.
  • device A can perceive device C, if device A can send preferred (preferred) resources and/or non-preferred (non-preferred) resources to device B, the hidden node problem shown in FIG. 2 can be avoided. This is actually a kind of inter-device cooperation. As shown in FIG. 2 , device A sends cooperation information to device B, indicating preferred (preferred) resources and/or non-preferred (non-preferred) resources.
  • Device B may perform resource selection or resource reselection (resource (re-) selection) based on the cooperation information and self-perception results.
  • Re-evaluation and/or pre-emption detection may trigger resource reselection.
  • resource reselection refers to resource reselection triggered by re-evaluation or pre-emption.
  • Device B determines whether to perform resource reselection based on the collaboration information and its own perception results, that is, to perform re-evaluation checking or pre-emption checking.
  • the traditional detection without cooperation information generally includes the following steps: first, the device generates a candidate resource set based on the sensing result, wherein, when the number of candidate resources is insufficient, the device increases the Reference Signal Received Power (RSRP, Reference Signal Received Power) threshold. Supplement additional candidate resources, and finally ensure that the number of candidate resources is greater than or equal to a certain threshold; then, the device judges whether the pre-selected or reserved resources belong to the candidate resource set. In the case of a resource set, the device reselects resources in the candidate resource set.
  • RSRP Reference Signal Received Power
  • the situation of performing re-evaluation or preemption detection in the case of inter-device cooperation is described, including how to determine whether to perform resource reselection, how to determine a set of candidate resources reported to higher layers, and how higher layers select resources.
  • the embodiment of the present application provides a resource reselection method, which is described from the second device.
  • FIG. 3 is a schematic diagram of a resource reselection method according to an embodiment of the present application. As shown in FIG. 3 , the method includes:
  • the second device receives cooperation information sent by the first device; wherein the cooperation information indicates preferred resources and/or no preferred resources; and
  • the second device determines whether to perform resource reselection on the first resource according to at least the cooperation information.
  • re-evaluation or preemption detection is performed in cooperation between side-link devices.
  • device A sends cooperation information to device B, and device B determines a part of resources that need to be reselected due to re-evaluation or pre-emption based on the cooperation information.
  • this part of resources is not included in the candidate resources reported to the upper layer or not selected from the candidate resources.
  • the problem of "device A intending to instruct device B to perform resource reselection, but device B does not perform resource reselection according to device A's instruction" can be avoided.
  • the second device determines a candidate resource to be reported to a Medium Access Control (MAC, Medium Access Control) layer based on its own perception result and/or cooperation information.
  • MAC Medium Access Control
  • the physical layer of device B determines several candidate resources based on its own perception results and cooperation information, and reports them to a higher layer (MAC layer).
  • the candidate resource set determined by device B based on its own perception results can be marked as S A
  • the resource set included in the cooperation information can be marked as C ;
  • the physical layer of device B can report S A and C to the upper layer, or can
  • the result after C processing (for example, taking the intersection of S A and C, where C is a preferred resource set, and for example, excluding candidate resources overlapping with C in S A , where C is a non-preferred resource set) is reported It can also report S A and the result processed according to S A and C to the high level.
  • the currently determined number of candidate resources to be reported to the high-level does not meet the minimum number requirements, resources are added to the current candidate resources until the minimum number requirements are met, and the candidate resources that meet the minimum number requirements are actually reported to the high-level.
  • the total number of candidate resources is M total
  • the required minimum ratio of the number of candidate resources reported to the high level to the total number of candidate resources is X
  • the above minimum number requirement means that the number of candidate resources reported to the high level must be greater than or equal to X ⁇ M total .
  • device B will add candidate resources to the processed result until the minimum number requirement is met.
  • This embodiment of the present application does not limit how to supplement resources, for example, supplementing resources from S A , and/or supplementing resources from C, and/or supplementing resources from the complement of C, and/or supplementing resources from the RSRP threshold Supplementary resources in the obtained SA in case of promotion, and/or supplementary resources from resources excluded based on non-monitored time slots.
  • Re-evaluation or pre-emption detection can trigger resource reselection.
  • the high layer reselects resources for transmission from the reported candidate resources.
  • the upper layer provides a set of resources (r 0 , r 1 , r 2 ,...) that need to be tested for re-evaluation and/or a set of resources that need to be tested for pre-emption (r′ 0 , r′ 1 , r′ 2 ,...) .
  • resource r (the first resource) is a resource that needs to undergo re-evaluation or pre-emption detection, that is, r ⁇ (r 0 ,r 1 ,r 2 ,...) or r ⁇ (r′ 0 ,r′ 1 ,r ' 2 ,).
  • the second device determines to perform resource reselection on the first resource.
  • the device B performs resource reselection on resource r.
  • Resources under re-evaluation or pre-emption detection "resources that need to undergo re-evaluation or pre-emption detection”, and “resources that need re-evaluation or pre-emption detection” are equivalent to each other. Assuming that resource r is a resource that needs to accept re-evaluation or pre-emption detection, if resource r overlaps with the non-preferred resource sent by device A, or resource r is not the preferred resource sent by device A, then device B will Perform resource reselection,
  • the physical layer of device B reports to the upper layer that "resource r needs to be reselected due to re-evaluation or pre-emption", and reports several candidate resources; the upper layer performs resource reselection on resource r, that is, reselects among the reported candidate resources resource.
  • the non-preferred resource or the preferred resource may be a time-frequency resource or a time slot. For example, if a time slot belongs to non-preferred resources or preferred resources, then all time-frequency resources in the time slot belong to non-preferred resources or preferred resources.
  • whether to perform resource reselection on resource r has nothing to do with the candidate resources reported by device B to a higher layer. This can avoid the problem of "device A wants to instruct device B to reselect resources, but device B does not perform resource reselection according to device A's instruction".
  • device A discovers that resource r needs to be reselected due to strong interference, thus triggering the sending of coordination information, and sending non-preferred resources to device B. After device B excludes candidate resources (including resource r) overlapping with non-preferred resources, the number of remaining candidate resources does not meet the minimum number requirement. In this case, device B will supplement some previously excluded candidate resources.
  • resource r may also be supplemented, and then reported to the high-level. Since the resource r is included in the candidate resources reported to the high layer, the traditional method will judge that it is not necessary to perform resource reselection on the resource r, thus violating the original intention of the device A.
  • the embodiment of the present application can avoid the problem of inconsistency of understanding between the two parties.
  • Device B may perform resource reselection on resource r when resource r satisfies the foregoing conditions. In addition, device B may also perform resource reselection on resource r when resource r satisfies other conditions. This is schematically explained below.
  • the first resource is a resource requiring preemption detection.
  • the candidate resources reported to the medium access control layer do not include the first resource, the first resource overlaps with the reserved resource perceived by the second device, and the RSRP of the reserved resource is higher than the RSRP threshold, and the second device's
  • the transmission priority value is greater than the priority value of the reserved resource or the transmission priority value of the second device is greater than the priority value of the reserved resource and the priority value of the reserved resource is smaller than the configured or preconfigured
  • the second device determines to perform resource reselection on the first resource.
  • the "RSRP of the reserved resource” is, for example, the PSCCH that reserves the resource and/or the reference signal received power of the demodulation reference signal (DMRS) of the PSSCH that is located in the same time slot as indicated by the PSCCH that reserves the resource.
  • DMRS demodulation reference signal
  • resource r is a resource that needs to undergo pre-emption detection, that is, r ⁇ (r′ 0 , r′ 1 , r′ 2 ,). If the resource r satisfies the following condition 1 and/or condition 2, device B reports "resource r needs to be reselected due to pre-emption" to the upper layer.
  • Condition 1 Resource r overlaps with non-preferred resources, or resource r does not belong to the preferred resource set.
  • the resource r reported by device B to the upper layer does not include resource r
  • the resource r overlaps with the reserved resource perceived by device B, wherein the RSRP associated with the reserved resource is higher than a certain RSRP threshold, which can ensure that the number of resources reported to the upper layer meets the minimum number requirement, and
  • prio RX The priority value prio RX associated with the reserved resource satisfies prio TX >prio RX , where prio TX is the transmission priority value of device B and is also the priority value associated with resource r, or prio RX satisfies prio RX ⁇ prio pre and prio TX >prio RX , where prio pre is a configured or preconfigured priority threshold.
  • condition 1 starts from the perspective of device A, and device A judges that resource r should be reselected.
  • Condition 2 starts from the perspective of device B, and device B judges that resource r should be reselected. As long as one of the device A and the device B judges that the resource r should be reselected, the resource r is reselected.
  • the first resource is a resource that requires re-evaluation.
  • the second device determines to perform resource reselection on the first resource.
  • resource r is a resource that needs to be tested by re-evaluation, that is, r ⁇ (r 0 ,r 1 ,r 2 ,). If the resource r satisfies the following condition 1 and/or condition 3, device B reports to the upper layer that "resource r needs to be reselected due to re-evaluation".
  • Condition 1 Resource r overlaps with non-preferred resources, or resource r does not belong to the preferred resource set.
  • Condition 3 The resource r reported by device B to the upper layer does not include resource r.
  • the second device determines that the first resource is not included in the candidate resources reported to the medium access control layer.
  • the candidate resources reported to the upper layer may include resource r satisfying condition 1.
  • device B can correctly identify that resource r needs to be reselected, if no measures are taken, device B may still select resource r when performing resource reselection among candidate resources, thus making resource reselection lose significance.
  • the candidate resources reported to the upper layer can be limited, so as to ensure that the resource reselected by device B is different from resource r.
  • resource r in re-evaluation or pre-emption detection if resource r overlaps with non-preferred resources, or resource r does not belong to the preferred resource set, the candidate resources reported by device B to the upper layer do not include resources r.
  • resource r is a resource that needs to accept re-evaluation or pre-emption detection
  • resource r overlaps with the non-preferred resource sent by device A, or resource r is not the preferred resource sent by device A
  • device B will report to the upper layer Resource r needs to be reselected due to re-evaluation or pre-emption, and reports several candidate resources, wherein resource r is not included in these candidate resources.
  • the high layer selects resources from candidate resources. For example, resources may be randomly selected, and for example, resources may be preferentially selected from a part of candidate resources.
  • the second resource is a resource that is different from the first resource or is not A resource that overlaps with the first resource.
  • the candidate resources reported by device B to the upper layer include candidate resources that overlap with non-preferred resources
  • the candidate resources that overlap with non-preferred resources are resources that are different from or do not overlap with resource r resource.
  • resource r is a resource under re-evaluation or pre-emption detection.
  • the third resource is a resource that is different from the first resource or is different from the resource. The resources that overlap the first resource.
  • the candidate resources reported by device B to the upper layer include candidate resources that do not belong to the preferred resource set
  • the candidate resources that do not belong to the preferred resource set are resources that are different from resource r, or resources that do not overlap with resource r.
  • resource r is a resource under re-evaluation or pre-emption detection.
  • the candidate resources reported by device B to the upper layer may include candidate resources overlapping with non-preferred resources, or candidate resources not belonging to the preferred resource set. For example, after device B excludes all candidate resources that overlap with non-preferred resources, or takes the intersection of the preferred resource set and the candidate resource set SA determined by device B according to its own perception results, the number of candidate resources obtained may be The minimum number requirement is not met. In this case, some previously excluded candidate resources that overlap with non-preferred resources or previously excluded candidate resources that do not belong to the preferred resource set can be added to the current candidate resources, that is, they can be reported again Candidate resources for higher layers, so that the number of candidate resources meets the minimum number requirements.
  • the supplemented candidate resources that overlap with non-preferred resources or that do not belong to the preferred resource set cannot be any resources that need to undergo re-evaluation or pre-emption detection.
  • resource r for any resource r that needs to accept re-evaluation or pre-emption detection, if the resource r overlaps with the non-preferred resource, or if the resource r does not belong to the preferred resource set, the resource r cannot be supplemented and reported to the high-level candidate resources. This is because resource r that meets the above conditions should have been reselected.
  • the purpose of device A reporting non-preferred or preferred resources is to allow device B to reselect resource r. If resource r is added to device B's Candidate resources will be wrongly judged by device B as not requiring reselection, thus violating the original intention of cooperation between devices. In addition, when device B performs resource reselection among candidate resources, resource r may still be selected, which also makes resource reselection meaningless.
  • the supplemented candidate resources that overlap with non-preferred resources or that do not belong to the preferred resource set cannot be any resources that need to be subject to re-evaluation or pre-emption detection Overlapping resources.
  • any resource that overlaps with resource r cannot be Supplemented into the candidate resources reported to the high-level. This is because different candidate resources may overlap, and if resource r cannot become a candidate resource, there is not enough information to determine which part of resource block (RB, Resource Block) or subchannel of resource r is affected by Strong interference, so that it needs to be reselected. To be on the safe side, any candidate resource that overlaps with resource r cannot become a candidate resource.
  • RB Resource Block
  • device A finds that resource r needs to be reselected due to strong interference, thus triggering the sending of cooperation information and sending non-preferred resources to device B. After device B excludes candidate resources (including resource r) overlapping with non-preferred resources, the number of remaining candidate resources does not meet the minimum number requirement.
  • device B will supplement some previously excluded candidate resources.
  • the added candidate resource overlapping with the non-preferred resource cannot be resource r, or the added candidate resource overlapping with the non-preferred resource cannot be any resource overlapping with resource r.
  • the embodiment of the present application does not limit how the device B determines the candidate resources to be reported to the upper layer based on the cooperation information and the self-perception result, and does not limit how to supplement the resources.
  • Fig. 4 is a schematic diagram of supplementary resources in the embodiment of the present application. As shown in Fig. 4, the method may include:
  • the physical layer determines candidate resources to be reported to a higher layer (MAC layer); for example, the physical layer performs processing according to its own perception results and/or cooperation information. Wherein, the candidate resources do not include any resource overlapping with the non-preferred resource.
  • MAC layer higher layer
  • the physical layer determines whether the candidate resources meet the minimum number requirement; if yes, execute 403; if no, execute 404.
  • the physical layer reports the candidate resource to a higher layer (MAC layer).
  • MAC layer higher layer
  • Device B takes the intersection of the preferred resource set and the candidate resource set SA determined by device B based on its own perception results. When the number of candidate resources included in the intersection does not meet the minimum number requirement When , device B can add candidate resources in SA that do not belong to the intersection, and these supplemented candidate resources are actually candidate resources that do not belong to the preferred resource set. In the process of supplementing resources, the added candidate resource that does not belong to the preferred resource set cannot be resource r, or the added candidate resource that does not belong to the preferred resource set cannot be any resource that overlaps with resource r.
  • the foregoing conditions for judging resource reselection may be adaptively adjusted, so that the judging resource reselection may also depend on the candidate resources reported to the upper layer. For example, assume that resource r is a resource that needs to undergo pre-emption detection, that is, r ⁇ (r′ 0 , r′ 1 , r′ 2 ,). If the resource r satisfies the following condition 1' and/or condition 2, the device B reports "resource r needs to be reselected due to pre-emption" to the upper layer.
  • the resource r reported by device B to the upper layer does not include resource r
  • Resource r overlaps with non-preferred resources, or resource r does not belong to the preferred resource set.
  • the resource r reported by device B to the upper layer does not include resource r
  • the resource r overlaps with the reserved resource perceived by device B, wherein the RSRP associated with the reserved resource is higher than a certain RSRP threshold, which can ensure that the number of resources reported to the upper layer meets the minimum number requirement, and
  • prio RX The priority value prio RX associated with the reserved resource satisfies prio TX >prio RX , where prio TX is the transmission priority value of device B and is also the priority value associated with resource r, or prio RX satisfies prio RX ⁇ prio pre and prio TX >prio RX , where prio pre is a configured or preconfigured priority threshold.
  • resource r is a resource that needs to be tested by re-evaluation, that is, r ⁇ (r 0 ,r 1 ,r 2 ,). If the resource r satisfies the following condition 3', the device B reports "resource r needs to be reselected due to re-evaluation" to the upper layer.
  • the reselected resource is a resource different from resource r.
  • the above describes how to determine the set of candidate resources reported to the high-level, and how the high-level selects resources is described below.
  • the second device when selecting a resource from candidate resources reported to the medium access control layer, the second device selects a fourth resource other than the first resource, or selects a fourth resource that does not overlap with the first resource. Five resources.
  • the candidate resources reported by the physical layer to the high layer may include resource r satisfying condition 1.
  • device B can correctly identify that resource r needs to be reselected, if no measures are taken, device B may still select resource r when performing resource reselection among candidate resources, thus making resource reselection lose significance.
  • the behavior of the upper layer during resource reselection can be restricted, so as to ensure that the resource reselected by device B is different from resource r.
  • device B performs resource reselection for resource r.
  • the upper layer of device B selects resources other than resource r from the reported candidate resources, or selects resources that do not overlap with resource r.
  • resource r is a resource that needs to accept re-evaluation or pre-emption detection
  • resource r overlaps with the non-preferred resource sent by device A, or resource r is not the preferred resource sent by device A
  • device B sends
  • the upper layer reports that resource r needs to be reselected due to re-evaluation or pre-emption, and reports several candidate resources.
  • the resource r may or may not be included in these candidate resources, which is not limited.
  • high-level resources are selected within the resource range of candidate resources except resource r, or within the resource range that does not overlap with resource r among candidate resources.
  • resources can be randomly selected, and
  • resources may be selected preferentially from a part of candidate resources.
  • the reselected resource is a resource different from resource r.
  • An embodiment of the present application provides a method for inter-device collaboration, which is described from the first device. The same content as the embodiment of the first aspect will not be repeated.
  • FIG. 5 is a schematic diagram of a method for inter-device collaboration in an embodiment of the present application. As shown in FIG. 5, the method includes:
  • the first device generates collaboration information based on its own perception results, where the collaboration information indicates preferred resources and/or no preferred resources;
  • the first device sends the cooperation information to the second device; where the cooperation information is used by the second device to determine whether to perform resource reselection on the first resource requiring re-evaluation or preemption detection.
  • the second resource is a resource different from the first resource or is a resource that does not overlap with the first resource.
  • the third resource is a resource different from the first resource or is Resources that do not overlap with the first resource.
  • An embodiment of the present application provides a resource reselection device.
  • the apparatus may be, for example, a terminal device (such as the aforementioned second device), or may be one or some components or components configured on the terminal device, and details that are the same as those in the embodiment of the first aspect will not be repeated here.
  • FIG. 6 is a schematic diagram of a resource reselection device according to an embodiment of the present application. As shown in Figure 6, the resource reselection device 600 includes:
  • a receiving unit 601 which receives cooperation information sent by the first device; wherein the cooperation information indicates preferred resources and/or no preferred resources;
  • the processing unit 602 is configured to determine, for the first resource requiring re-evaluation or preemption detection, whether to perform resource reselection on the first resource at least according to the cooperation information.
  • the processing unit 602 also determines the candidate resource to be reported to the medium access control layer based on the self-perception result and/or the cooperation information.
  • the processing unit 602 determines to perform resource reselection on the first resource.
  • the first resource is a resource requiring preemption detection.
  • the candidate resources reported to the medium access control layer do not include the first resource, the first resource overlaps with the reserved resource perceived by the second device, and the reserved resource
  • the RSRP of the reserved resource is higher than the RSRP threshold, and the transmission priority value of the second device is greater than the priority value of the reserved resource, or the transmission priority value of the second device is greater than the priority value of the reserved resource If the priority value and the priority value of the reserved resource is less than a configured or preconfigured priority threshold, the processing unit 602 determines to perform resource reselection on the first resource.
  • the first resource is a resource requiring re-evaluation.
  • the processing unit 602 determines to perform resource reselection on the first resource.
  • the processing unit 602 determines that among the candidate resources reported to the medium access control layer The first resource is not included.
  • the second resource is a resource different from the first resource or is not Resources that overlap with the first resource.
  • the third resource is a resource that is different from the first resource or is not Resources that overlap the first resource.
  • the processing unit 602 when selecting a resource from the candidate resources reported to the medium access control layer, the processing unit 602 selects a fourth resource other than the first resource, or selects a fourth resource that does not overlap with the first resource. Five resources.
  • the resource reselection apparatus 600 may also include other components or modules, and for specific content of these components or modules, reference may be made to related technologies.
  • FIG. 6 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 apparatus may be, for example, a terminal device (such as the aforementioned first device), or may be one or some components or components configured on the terminal device, and details that are the same as those in the embodiment of the second aspect will not be repeated here.
  • FIG. 7 is a schematic diagram of an apparatus for collaboration between devices according to an embodiment of the present application.
  • the inter-device collaboration apparatus 700 includes:
  • a generating unit 701 which generates cooperation information based on its own perception results, where the cooperation information indicates preferred resources and/or no preferred resources;
  • a sending unit 702 configured to send the cooperation information to a second device; wherein, the cooperation information is used by the second device to determine whether to perform resource reselection on the first resource requiring re-evaluation or preemption detection.
  • the second resource is the same as the first resource A different resource or a resource that does not overlap with said first resource.
  • the third resource is different from the first resource or a resource that does not overlap with the first resource.
  • inter-device coordination apparatus 700 may also include other components or modules, and for specific content of these components or modules, reference may be made to related technologies.
  • FIG. 7 only exemplarily shows the connection relationship or signal direction among the 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 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 first device generates cooperation information based on its own perception results, wherein the cooperation information indicates preferred resources and/or no preferred resources, and sends the cooperation information to a second device;
  • the second device receives the cooperation information sent by the first device, and, for the first resource requiring re-evaluation or preemption detection, determines whether to perform resource reselection on the first resource at least according to the cooperation information.
  • 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. 8 is a schematic diagram of a network device according to an embodiment of the present application.
  • the network device 800 may include: a processor 810 (such as a central processing unit CPU) and a memory 820 ; the memory 820 is coupled to the processor 810 .
  • the memory 820 can store various data; in addition, it also stores a program 830 for information processing, and executes the program 830 under the control of the processor 810 .
  • the network device 800 may further include: a transceiver 840 and an antenna 850 , etc.; where 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 800 does not necessarily include all components shown in FIG. 8 ; in addition, the network device 800 may also include components not shown in FIG. 8 , 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. 9 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 900 may include a processor 910 and a memory 920 ; the memory 920 stores data and programs, and is coupled to the processor 910 . It is worth noting that this figure is exemplary; other types of structures may also be used to supplement or replace this structure to implement telecommunications functions or other functions.
  • the processor 910 may be configured to execute a program to implement the resource reselection method described in the embodiment of the first aspect.
  • the processor 910 may be configured to perform the following control: receive cooperation information sent by the first device; wherein the cooperation information indicates preferred resources and/or non-preferred resources; and for the first resources requiring re-evaluation or preemption detection, Determine whether to perform resource reselection on the first resource at least according to the cooperation information.
  • the processor 910 may be configured to execute a program to implement the inter-device cooperation method described in the embodiment of the second aspect.
  • the processor 910 may be configured to perform the following control: generate cooperation information based on self-perception results, where the cooperation information indicates preferred resources and/or no preferred resources; and send the cooperation information to the second device; wherein, the The cooperation information is used by the second device to determine whether to perform resource reselection on the first resource requiring re-evaluation or preemption detection.
  • the terminal device 900 may further include: a communication module 930 , an input unit 940 , a display 950 , and a power supply 960 .
  • a communication module 930 the terminal device 900 may further include: a communication module 930 , an input unit 940 , a display 950 , and a power supply 960 .
  • 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 900 does not necessarily include all the components shown in FIG. have technology.
  • An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the resource reselection method described in the embodiment of the first aspect or the resource reselection method of the second aspect.
  • 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 resource reselection method described in the embodiment of the first aspect or the device-to-device method described in the embodiment of the second aspect. collaborative approach.
  • 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 resource reselection method including:
  • the second device receives the cooperation information sent by the first device; wherein the cooperation information indicates preferred resources and/or no preferred resources; and
  • the second device determines whether to perform resource reselection on the first resource at least according to the cooperation information.
  • the second device determines, based on its own perception result and/or the cooperation information, candidate resources to be reported to the medium access control layer.
  • Supplement 3 The method according to Supplement 1, wherein, when the first resource overlaps with the non-preferred resource or the first resource does not belong to the preferred resource, the second device determines Perform resource reselection on the first resource.
  • Supplement 4 The method according to Supplement 2, wherein the first resource is a resource requiring preemption detection.
  • Supplement 5 The method according to Supplement 4, wherein the candidate resources reported to the medium access control layer do not include the first resource, the first resource and the second resource perceived by the second device
  • the reserved resources overlap and the RSRP of the reserved resources is higher than the RSRP threshold, and the transmission priority value of the second device is greater than the priority value of the reserved resources or the transmission priority of the second device If the value is greater than the priority value of the reserved resource and the priority value of the reserved resource is smaller than a configured or pre-configured priority threshold, the second device determines to allocate resources to the first resource re-election.
  • Supplement 6 The method according to Supplement 2, wherein the first resource is a resource that needs to be re-evaluated.
  • Supplement 7 The method according to Supplement 6, wherein, in the case that the candidate resources reported to the medium access control layer do not include the first resource, the second device determines that the first resource Perform resource reselection.
  • Supplement 8 The method according to any one of Supplements 1 to 7, wherein, when the first resource overlaps with the non-preferred resource or the first resource does not belong to the preferred resource, the The second device determines that the first resource is not included in the candidate resources reported to the medium access control layer.
  • Supplementary Note 9 The method according to any one of Supplementary Notes 1 to 7, wherein, when the candidate resources reported to the medium access control layer include a second resource overlapping with the unpreferred resource, the second The resource is a resource different from the first resource or a resource that does not overlap with the first resource.
  • Supplement 10 The method according to any one of Supplements 1 to 7, wherein when the candidate resources reported to the medium access control layer include a third resource that does not belong to the preferred resource, the third resource is a resource different from the first resource or a resource that does not overlap with the first resource.
  • Supplementary Note 11 The method according to any one of Supplementary Notes 1 to 7, wherein when the second device selects a resource from candidate resources reported to the medium access control layer, it selects a resource other than the first resource a fourth resource, or select a fifth resource that does not overlap with the first resource.
  • a method for inter-device collaboration comprising:
  • the first device generates cooperation information based on its own perception results, where the cooperation information indicates preferred resources and/or no preferred resources;
  • the first device sends the cooperation information to the second device; wherein, the cooperation information is used by the second device to determine whether to perform resource reselection on the first resource requiring re-evaluation or preemption detection.
  • Supplementary Note 13 The method according to Supplementary Note 12, wherein, when the candidate resources reported by the second device to the medium access control layer include a second resource overlapping with the unpreferred resource, the second The second resource is a resource different from the first resource or a resource that does not overlap with the first resource.
  • Supplementary Note 14 The method according to Supplementary Note 12, wherein when the candidate resources reported by the second device to the medium access control layer include a third resource that does not belong to the preferred resource, the third The resource is a resource different from the first resource or a resource that does not overlap with the first resource.
  • 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 resources described in any one of Supplements 1 to 11 The reselection method or the inter-device cooperation method described in any one of Supplements 12 to 14.

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Abstract

本申请实施例提供一种资源重选方法、设备间协作方法以及装置。所述资源重选方法包括：第二设备接收第一设备发送的协作信息；其中所述协作信息指示偏好资源和/或不偏好资源；以及对于需要重评估或抢占检测的第一资源，至少根据协作信息确定是否对所述第一资源进行资源重选。由此，可以避免出现协作设备双方理解不一致的问题，提高设备间协作的准确性和有效性。

Description

资源重选方法、设备间协作方法以及装置 技术领域
本申请实施例涉及通信技术领域。
背景技术
V2X(Vehicle to Everything)是一种车辆通信技术，相比于使用Uu链路的蜂窝通信，V2X的发送设备通过边链路(sidelink)与接收设备直接进行通信。Rel-16NR V2X定义的物理信道包括物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)、物理边链路共享信道(PSSCH，Physical Sidelink Shared Channel)和物理边链路反馈信道(PSFCH，Physical Sidelink Feedback Channel)。PSCCH承载1st stage SCI(Sidelink Control Informaiton)，1st stage SCI主要用于预留资源。PSSCH承载2nd stage SCI以及传输块(TB，Transport Block)，其中2nd stage SCI主要用于TB解调。PSFCH承载边链路反馈信息(HARQ-ACK)。
边链路发送所使用的资源(时频资源)位于某一资源池内。NR V2X定义了两种工作模式。对于NR V2X模式1(mode 1)，设备用于V2X通信的资源由基站通过NR Uu链路进行调度或配置。对于NR V2X模式2(mode 2)，设备可以基于感知结果，自主对用于V2X通信的时频资源进行选择。
对于mode 2，NR V2X支持重评估(re-evaluation)和抢占(pre-emption)，可以在设备预选或预留了用于发送的资源后，持续检测上述资源是否仍然适合用于发送。对于某一V2X设备，设备的高层(例如介质访问控制MAC层)提供给物理层一个待进行re-evaluation检测的资源集合(r 0,r 1,r 2,…)和/或一个待进行pre-emption检测的资源集合(r′ 0,r′ 1,r′ 2,…)。设备的物理层基于感知对尚未发送的资源进行re-evaluation检测和/或pre-emption检测。
设备在满足条件的情况下触发资源重选，其中，资源重选可以是由re-evaluation触发的，或者是由pre-emption触发的。对于re-evaluation，设备对预选的但尚未被预留的资源进行检测，当该资源不属于上报给高层的候选资源时，设备进行资源重选。对于pre-emption，设备对已经被自己预留的资源进行检测，当该资源可能受到来自其他设备的较高优先级预留资源的较强干扰时，设备进行资源重选。
在Mode 2基础上引入设备间协作(inter-UE coordination)可以额外为设备提供依靠自身感知无法获得的信息，从而可以进一步避免碰撞。因此，作为对自主资源选择mode 2的增强，设备间协作成为Rel-17边链路的研究内容之一。Rel-17边链路的应用场景不限于V2X，可以扩展到公共安全、商业服务、D2D(device-to-device)等更加广泛的边链路场景。
设备间协作需要设备之间交互信息，称为协作信息(coordination information)。协作信息可以指示(或包括)资源信息，即指示一个资源集合。例如，协作信息可以指示设备A基于感知获得的偏好资源和/或不偏好资源。
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：对于边链路设备间协作，例如设备A发送不偏好(non-preferred)资源或偏好(preferred)资源给设备B，设备B在排除掉所有与non-preferred资源重叠的候选资源后，或者，在获取与preferred资源存在交集的候选资源后，获得的候选资源数目可能不满足最小数目要求。在这种情况下，有可能需要补充一些与non-preferred资源重叠的候选资源或者不属于preferred资源的候选资源，从而使候选资源数目满足最小数目要求。
但是，在上述补充的资源包括需要接受re-evaluation或pre-emption检测的第一资源的情况下，设备B会做出不需要对第一资源进行资源重选的判断，从而产生“设备A想指示设备B进行资源重选，但设备B却没有按照设备A的指示进行资源重选”这种冲突，使得协作信息没有得到利用。
针对上述问题的至少之一，本申请实施例提供一种资源重选方法、设备间协作方法以及装置。
根据本申请实施例的一个方面，提供一种资源重选方法，包括：
第二设备接收第一设备发送的协作信息；其中所述协作信息指示偏好资源和/或不偏好资源；以及
所述第二设备对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确 定是否对所述第一资源进行资源重选。
根据本申请实施例的另一个方面，提供一种资源重选装置，包括：
接收单元，其接收第一设备发送的协作信息；其中所述协作信息指示偏好资源和/或不偏好资源；以及
处理单元，其对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
根据本申请实施例的另一个方面，提供一种设备间协作方法，包括：
第一设备基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源；以及
所述第一设备向第二设备发送所述协作信息；其中，所述协作信息被所述第二设备用于确定是否对需要重评估或抢占检测的第一资源进行资源重选。
根据本申请实施例的另一个方面，提供一种设备间协作装置，包括：
生成单元，其基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源；以及
发送单元，其向第二设备发送所述协作信息；其中，所述协作信息被所述第二设备用于确定是否对需要重评估或抢占检测的第一资源进行资源重选。
根据本申请实施例的另一个方面，提供一种通信系统，包括：
第一设备，其基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源，以及向第二设备发送所述协作信息；
第二设备，其接收所述第一设备发送的所述协作信息，以及对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
本申请实施例的有益效果之一在于：对于需要重评估或抢占检测的第一资源，至少根据协作信息确定是否对所述第一资源进行资源重选。由此，可以避免出现协作设备双方理解不一致的问题，提高设备间协作的准确性和有效性。
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是设备间协作的一示例图；
图3是本申请实施例的资源重选方法的一示意图；
图4是本申请实施例的补充资源的一示意图；
图5是本申请实施例的设备间协作方法的一示意图；
图6是本申请实施例的资源重选装置的一示意图；
图7是本申请实施例的设备间协作装置的一示意图；
图8是本申请实施例的网络设备的示意图；
图9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边链路通信，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边链路通信，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边链路通信。
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。
对于Rel-16NR V2X的自主资源选择mode 2，设备基于自身感知结果(sensing result)进行资源选择和重选，可以在一定程度上避免设备间的干扰或碰撞。然而，在某些情况下，仍然会有碰撞问题发生。例如隐藏节点(hidden node)问题的出现会导致碰撞。
图2是设备间协作的一示例图，对隐藏节点问题进行了示意性说明。例如，设备B向设备A发送边链路信息，设备A周围存在干扰设备C，由于设备B无法感知到设备C，设备B的发送会受到设备C的干扰。
由于设备A能够感知到设备C，如果设备A能够向设备B发送偏好(preferred)资源和/或不偏好(non-preferred)资源，则可以避免图2中所示的隐藏节点问题。这实际上是一种设备间协作，如图2所示，设备A向设备B发送了协作信息，指示了偏好(preferred)资源和/或不偏好(non-preferred)资源。
设备B可以基于协作信息和自身感知结果进行资源选择或者资源重选(resource(re-)selection)。重评估(re-evaluation)和/或抢占(pre-emption)检测可以触发资源重选。本申请实施例中，资源重选均指re-evaluation或pre-emption触发的资源重选。设备B基于协作信息和自身感知结果确定是否需要进行资源重选，即进行重评估检测(re-evaluation checking)或抢占检测(pre-emption checking)。
传统的不使用协作信息的检测大致包括以下步骤：首先，设备基于感知结果生成候选资源集合，其中，当候选资源数目不足时，设备通过提升参考信号接收功率(RSRP，Reference Signal Received Power)阈值来补充额外的候选资源，最终保证候选资源的 数目大于或等于某一阈值；然后，设备判断预选择的(pre-selected)或预留的(reserved)的资源是否属于候选资源集合，在不属于候选资源集合的情况下，设备在候选资源集合内对资源进行重选。
但是发明人发现，在设备协作中，设备A发送给设备B的资源不带有RSRP信息，对于某些由于候选资源数目不足而需要补充的额外的候选资源，设备B无法知晓设备A对所补充的资源的偏好，从而可能导致补充的候选资源是设备A本来想指示设备B进行重选的资源，例如设备A测量到的所受干扰较大的资源。如果使用传统方法，由于本应进行重选的资源现在属于候选资源集合，设备B将判断为不需要对其进行资源重选，从而违背了设备A的本意，没有达到设备间协作的目的。
在以下的实施例中，对在设备间协作情况下进行重评估或抢占检测的情况进行说明，包括如何确定是否进行资源重选，如何确定上报给高层的候选资源集合，以及高层如何选择资源。
第一方面的实施例
本申请实施例提供一种资源重选方法，从第二设备进行说明。
图3是本申请实施例的资源重选方法的一示意图，如图3所示，该方法包括：
301，第二设备接收第一设备发送的协作信息；其中所述协作信息指示偏好资源和/或不偏好资源；以及
302，所述第二设备对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
值得注意的是，以上附图3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3的记载。
由此，在边链路设备间协作中进行重评估或抢占检测。其中，设备A向设备B发送协作信息，设备B基于协作信息确定出一部分由于re-evaluation或pre-emption而需要重选的资源。此外，可以确保这部分资源不被包含在上报给高层的候选资源中或者不从候选资源中选择这部分资源。可以避免产生“设备A想指示设备B进行资源重选，但设备B没有按照设备A的指示进行资源重选”这一问题。
在一些实施例中，第二设备基于自身感知结果和/或协作信息确定上报给介质访问控制(MAC，Medium Access Control)层的候选资源。
例如，对于设备间协作，设备B的物理层基于自身感知结果和协作信息确定若干候选资源，将其上报给高层(MAC层)。设备B基于自身感知结果确定的候选资源集合可以记为S A，协作信息包括的资源集合可以记为C；设备B的物理层可以将S A和C上报给高层，也可以将根据S A和C处理后的结果(例如取S A和C的交集，其中，C是preferred资源集合，又例如，在S A中排除掉与C重叠的候选资源，其中，C是non-preferred资源集合)上报给高层，也可以将S A以及根据S A和C处理后的结果上报给高层。
在当前确定的想要上报给高层的候选资源数目不满足最小数目要求的情况下，向当前候选资源中补充资源，直到满足最小数目要求，真正上报给高层的是满足最小数目要求的候选资源。假设候选资源总数为M total，所要求的上报给高层的候选资源数占候选资源总数的最小比例为X，则上述最小数目要求指上报给高层的候选资源数要大于等于X·M total。
例如，根据S A和C处理后的结果所包含的候选资源数目不满足最小数目要求，则设备B向处理后的结果中补充候选资源，直到满足最小数目要求。本申请实施例对于如何补充资源不做限制，例如从S A中补充资源，和/或，从C中补充资源，和/或，从C的补集中补充资源，和/或，从在RSRP阈值提升情况下获得的S A中补充资源，和/或，从基于未监听的时隙(non-monitored)所排除的资源中补充资源。
重评估(Re-evaluation)或抢占(pre-emption)检测可以触发资源重选。当需要进行资源选择或重选时，高层在上报的候选资源中重新选择用于发送的资源。高层提供需要接受re-evaluation检测的资源集合(r 0,r 1,r 2,…)和/或需要接受pre-emption检测的资源集合(r′ 0,r′ 1,r′ 2,…)。假设资源r(第一资源)是需要接受re-evaluation或pre-emption检测的资源，即r∈(r 0,r 1,r 2,…)或r∈(r′ 0,r′ 1,r′ 2,…)。
在一些实施例中，在第一资源与不偏好资源重叠或者第一资源不属于偏好资源的情况下，第二设备确定对第一资源进行资源重选。
例如，对于处于re-evaluation或pre-emption检测中(subject to re-evaluation or pre-emption)的资源r，如果资源r与non-preferred资源重叠，或者，资源r不属于preferred资源集合，则设备B对资源r进行资源重选。
“处于re-evaluation或pre-emption检测中的资源”、“需要接受re-evaluation或pre-emption检测的资源”、“需要re-evaluation或pre-emption检测的资源”是彼此等价的说法。假设资源r是需要接受re-evaluation或pre-emption检测的资源，如果资源r与设备A发送的non-preferred资源存在重叠，或者，资源r不是设备A发送的preferred资源，那么设备B对资源r进行资源重选，
例如，设备B的物理层向高层上报“资源r由于re-evaluation或pre-emption需要重选”，并且上报若干候选资源；高层对资源r进行资源重选，即在上报的候选资源中重新选择资源。
non-preferred资源或preferred资源可以是时频资源，也可以是时隙。例如，如果一个时隙属于non-preferred资源或preferred资源，那么该时隙内的所有时频资源都属于non-preferred资源或preferred资源。
在上述实施例中，是否对资源r进行资源重选与设备B上报给高层的候选资源无关。这可以避免出现“设备A想指示设备B进行资源重选，但设备B却没有按照设备A的指示进行资源重选”这种问题。
例如，设备A发现资源r由于受到强干扰而需要被重选，从而触发协作信息发送，向设备B发送non-preferred资源。在设备B排除掉与non-preferred资源重叠的候选资源(包括资源r)后，剩余的候选资源数目已经不满足最小数目要求。在这种情况下，设备B会补充一些之前排除掉的候选资源。
如果不做限制，资源r也可能被补充进来，进而上报给高层。由于上报给高层的候选资源中包含资源r，传统方法会判断为不需要对资源r进行资源重选，从而违背设备A的本意。本申请实施例可以避免这种双方理解不一致的问题。
设备B可以在资源r满足上述条件的情况下，对资源r进行资源重选。此外，设备B也可能在资源r满足其他条件的情况下，对资源r进行资源重选。以下对此进行示意性说明。
在一些实施例中，第一资源是需要抢占检测的资源。在上报给介质访问控制层的候选资源不包括第一资源、第一资源与第二设备感知到的被预留资源重叠且所述被预留资源的RSRP高于RSRP阈值、并且第二设备的发送优先级数值大于被预留资源的优先级数值或者第二设备的发送优先级数值大于所述被预留资源的优先级数值且所述被预留资源的优先级数值小于配置或预配置的优先级阈值的情况下，第二设备确定 对第一资源进行资源重选。
“被预留资源的RSRP”例如是预留该资源的PSCCH和/或预留该资源的PSCCH指示的与其位于同一时隙的PSSCH的解调参考信号(DMRS)的参考信号接收功率，在本申请实施例中简称为“被预留资源的RSRP”，具体内容可以参考相关技术。
例如，假设资源r是需要接受pre-emption检测的资源，即r∈(r′ 0,r′ 1,r′ 2,…)。如果资源r满足以下条件1和/或条件2，则设备B向高层上报“资源r由于pre-emption需要重选”。
条件1：资源r与non-preferred资源重叠，或，资源r不属于preferred资源集合。
条件2：
-设备B上报给高层的资源中不包含资源r，并且
-资源r与设备B感知到的被预留的资源重叠，其中，与预留的资源所关联的RSRP高于某一RSRP阈值，该阈值能够保证上报给高层的资源数目满足最小数目要求，以及
-与预留的资源所关联的优先级数值prio RX满足prio TX>prio RX，其中，prio TX是设备B的发送优先级数值，也是与资源r关联的优先级数值，或者，prio RX满足prio RX<prio pre和prio TX>prio RX，其中，prio pre是配置或预配置的优先级阈值。
在上述实施例中，条件1从设备A的角度出发，设备A判断应该对资源r进行资源重选。条件2从设备B的角度出发，设备B判断应该对资源r进行资源重选。只要设备A和设备B中有一方判断应该对资源r进行资源重选，则对资源r进行资源重选。
在一些实施例中，第一资源是需要重评估的资源。在上报给介质访问控制层的候选资源不包括第一资源的情况下，第二设备确定对第一资源进行资源重选。
例如，假设资源r是需要接受re-evaluation检测的资源，即r∈(r 0,r 1,r 2,…)。如果资源r满足以下条件1和/或条件3，则设备B向高层上报“资源r由于re-evaluation需要重选”。
条件1：资源r与non-preferred资源重叠，或，资源r不属于preferred资源集合。
条件3：设备B上报给高层的资源中不包含资源r。
以上对于“确定是否对第一资源进行资源重选”进行了示意性说明，但本申请不限于此，还可以增加或组合其他条件。由此，可以避免出现“设备A想指示设备B进行 资源重选，但设备B却没有按照设备A的指示进行资源重选”这种问题。
以上对于如何确定是否进行资源重选进行了示意性说明，以下再对如何确定上报给高层的候选资源集合进行说明。
在一些实施例中，在第一资源与不偏好资源重叠或者第一资源不属于偏好资源的情况下，第二设备确定在上报给介质访问控制层的候选资源中不包括第一资源。
例如，上报给高层的候选资源可能包含满足条件1的资源r。在这种情况下，尽管设备B能够正确识别出资源r需要被重选，如果不采取任何措施，设备B在候选资源中进行资源重选时仍然可能选择到资源r，从而使资源重选失去意义。为解决这一问题，可以对上报给高层的候选资源进行限制，从而保证设备B重新选择的资源是与资源r不同的资源。
即，对于处于re-evaluation或pre-emption检测中的资源r，如果资源r与non-preferred资源重叠，或者，资源r不属于preferred资源集合，则设备B上报给高层的候选资源中不包含资源r。
假设资源r是需要接受re-evaluation或pre-emption检测的资源，如果资源r与设备A发送的non-preferred资源存在重叠，或者，资源r不是设备A发送的preferred资源，那么设备B向高层上报资源r由于re-evaluation或pre-emption需要重选，并且上报若干候选资源，其中，这些候选资源中不包含资源r。为了对资源r进行资源重选，高层在候选资源中选择资源，例如，可以随机选择资源，又例如，可以优先在一部分候选资源中选择资源。
在一些实施例中，在上报给介质访问控制层的候选资源包括与不偏好资源重叠的第二资源的情况下，所述第二资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
例如，在设备B上报给高层的候选资源包含与non-preferred资源重叠的候选资源的情况下，与non-preferred资源重叠的候选资源是与资源r不同的资源，或者是不与资源r重叠的资源。其中，资源r是处于re-evaluation或pre-emption检测中的资源。
在一些实施例中，在上报给介质访问控制层的候选资源包括不属于偏好资源的第三资源的情况下，所述第三资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
例如，在设备B上报给高层的候选资源包含不属于preferred资源集合的候选资 源的情况下，不属于preferred资源集合的候选资源是与资源r不同的资源，或者是不与资源r重叠的资源。其中，资源r是处于re-evaluation或pre-emption检测中的资源。
设备B上报给高层的候选资源可能包含与non-preferred资源重叠的候选资源，或者，不属于preferred资源集合的候选资源。例如，设备B在排除掉所有与non-preferred资源重叠的候选资源后，或者，在取preferred资源集合与设备B根据自身感知结果确定的候选资源集合S A的交集后，获得的候选资源数目可能不满足最小数目要求。在这种情况下，一些之前排除掉的与non-preferred资源重叠的候选资源或者之前排除掉的不属于preferred资源集合的候选资源可以被重新补充进当前的候选资源中，即重新变成能够上报给高层的候选资源，从而使候选资源数目满足最小数目要求。
作为一种实施方式，在补充资源的过程中，补充进来的与non-preferred资源重叠的候选资源或者不属于preferred资源集合的候选资源不能是任何需要接受re-evaluation或pre-emption检测的资源。
换句话说，对于任何需要接受re-evaluation或pre-emption检测的资源r，如果资源r与non-preferred资源重叠，或者，资源r不属于preferred资源集合，则资源r不能被补充进上报给高层的候选资源。这是由于满足上述条件的资源r是本应该被重选的，设备A上报non-preferred或preferred资源的目的就是为了让设备B对资源r进行重选，如果资源r又被补充进设备B的候选资源，则会被设备B错误判断为不需要重选，从而违背了设备间协作的本意。另外，设备B在候选资源中进行资源重选时仍然可能选择到资源r，也会使资源重选失去意义。
作为一种实施方式，在补充资源的过程中，补充进来的与non-preferred资源重叠的候选资源或者不属于preferred资源集合的候选资源不能是任何与需要接受re-evaluation或pre-emption检测的资源重叠的资源。
换句话说，对于任何需要接受re-evaluation或pre-emption检测的资源r，如果资源r与non-preferred资源重叠，或者，资源r不属于preferred资源集合，则任何与资源r重叠的资源不能被补充进上报给高层的候选资源。这是由于不同的候选资源是可能发生重叠的，在资源r不能成为候选资源的情况下，没有足够的信息来确定究竟是资源r的哪一部分资源块(RB，Resource Block)或子信道受到了强干扰，从而导致其需要重选，保险起见，任何与资源r重叠的候选资源也不能成为候选资源。
以设备A发送non-preferred资源集合给设备B的情况为例，设备A发现资源r由于受到强干扰而需要被重选，从而触发协作信息的发送，向设备B发送non-preferred资源。在设备B排除掉与non-preferred资源重叠的候选资源(包括资源r)后，剩余的候选资源数目已经不满足最小数目要求。
在这种情况下，设备B会补充一些之前排除掉的候选资源。在补充资源的过程中，补充进来的与non-preferred资源重叠的候选资源不能是资源r，或者，补充进来的与non-preferred资源重叠的候选资源不能是任何与资源r重叠的资源。本申请实施例对于设备B如何基于协作信息和自身感知结果确定上报给高层的候选资源不做限制，对于如何补充资源不做限制。
图4是本申请实施例的补充资源的一示意图，如图4所示，该方法可以包括：
401，物理层确定上报给高层(MAC层)的候选资源；例如根据自身感知结果和/或协作信息进行处理。其中，候选资源不包括任何与non-preferred资源重叠的资源。
402，物理层确定候选资源是否满足最小数目要求；在是的情况下执行403，在否的情况下执行404。
403，物理层将候选资源上报给高层(MAC层)。
404，向候选资源中补充资源；其中补充的与non-preferred资源重叠的资源是与资源r不同的资源，或者是不与资源r重叠的资源。
值得注意的是，以上附图4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4的记载。
以设备A发送preferred资源集合给设备B的情况为例，设备B取preferred资源集合与设备B根据自身感知结果确定的候选资源集合S A的交集，当交集包含的候选资源数目不满足最小数目要求时，设备B可以将S A中不属于交集的候选资源补充进来，这些补充的候选资源实际上都是不属于preferred资源集合的候选资源。在补充资源的过程中，补充进来的不属于preferred资源集合的候选资源不能是资源r，或者，补充进来的不属于preferred资源集合的候选资源不能是任何与资源r重叠的资源。
可以对前面所述的判断资源重选的条件进行适应性调整，使对资源重选的判断也可以取决于上报给高层的候选资源。例如，假设资源r是需要接受pre-emption检测 的资源，即r∈(r′ 0,r′ 1,r′ 2,…)。如果资源r满足以下条件1’和/或条件2，则设备B向高层上报“资源r由于pre-emption需要重选”。
条件1’：
-设备B上报给高层的资源中不包含资源r，并且
-资源r与non-preferred资源重叠，或者，资源r不属于preferred资源集合。
条件2：
-设备B上报给高层的资源中不包含资源r，并且
-资源r与设备B感知到的被预留的资源重叠，其中，与预留的资源所关联的RSRP高于某一RSRP阈值，该阈值能够保证上报给高层的资源数目满足最小数目要求，以及
-与预留的资源所关联的优先级数值prio RX满足prio TX>prio RX，其中，prio TX是设备B的发送优先级数值，也是与资源r关联的优先级数值，或者，prio RX满足prio RX<prio pre和prio TX>prio RX，其中，prio pre是配置或预配置的优先级阈值。
例如，假设资源r是需要接受re-evaluation检测的资源，即r∈(r 0,r 1,r 2,…)。如果资源r满足以下条件3’，则设备B向高层上报“资源r由于re-evaluation需要重选”。
条件3’：设备B上报给高层的资源中不包含资源r。
由此，可以保证设备B在对资源r进行资源重选时，重新选择的资源是与资源r不同的资源。以上对于如何确定上报给高层的候选资源集合进行了说明，以下对高层如何选择资源进行说明。
在一些实施例中，第二设备在从上报给介质访问控制层的候选资源中选择资源时，选择除所述第一资源以外的第四资源，或者选择不与所述第一资源重叠的第五资源。
例如，物理层上报给高层的候选资源可能包含满足条件1的资源r。在这种情况下，尽管设备B能够正确识别出资源r需要被重选，如果不采取任何措施，设备B在候选资源中进行资源重选时仍然可能选择到资源r，从而使资源重选失去意义。为解决这一问题，可以对高层在资源重选时的行为进行限制，从而保证设备B重新选择的资源是与资源r不同的资源。
即，对于处于re-evaluation或pre-emption检测中的资源r，如果资源r与non-preferred资源重叠，或者，资源r不属于preferred资源集合，则设备B对资源r进行资源重选。在资源重选时，设备B的高层在上报的候选资源中选择除资源r以外 的资源，或者选择不与资源r重叠的资源。
例如，假设资源r是需要接受re-evaluation或pre-emption检测的资源，如果资源r与设备A发送的non-preferred资源存在重叠，或者，资源r不是设备A发送的preferred资源，那么设备B向高层上报资源r由于re-evaluation或pre-emption需要重选，并且上报若干候选资源。这些候选资源中可能包含资源r，也可能不包含资源r，对此不做限制。
为了对资源r进行资源重选，高层在候选资源中除资源r以外的资源范围内选择资源，或者在候选资源中不与资源r重叠的资源范围内选择资源，例如，可以随机选择资源，又例如，可以优先在一部分候选资源中选择资源。
由此，可以保证设备B在对资源r进行资源重选时，重新选择的资源是与资源r不同的资源。
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，对于需要重评估或抢占检测的第一资源，至少根据协作信息确定是否对所述第一资源进行资源重选。由此，可以避免出现协作设备双方理解不一致的问题，提高设备间协作的准确性和有效性。
第二方面的实施例
本申请实施例提供一种设备间协作方法，从第一设备进行说明。与第一方面的实施例相同的内容不再赘述。
图5是本申请实施例的设备间协作方法的一示意图，如图5所示，该方法包括：
501，第一设备基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源；以及
502，第一设备向第二设备发送所述协作信息；其中所述协作信息被所述第二设备用于确定是否对需要重评估或抢占检测的第一资源进行资源重选。
值得注意的是，以上附图5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5的记载。
在一些实施例中，在第二设备的上报给介质访问控制层的候选资源包括与不偏好资源重叠的第二资源的情况下，所述第二资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
在一些实施例中，在第二设备的上报给介质访问控制层的候选资源包括不属于偏好资源的第三资源的情况下，所述第三资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
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，对于需要重评估或抢占检测的第一资源，至少根据协作信息确定是否对所述第一资源进行资源重选。由此，可以避免出现协作设备双方理解不一致的问题，提高设备间协作的准确性和有效性。
第三方面的实施例
本申请实施例提供一种资源重选装置。该装置例如可以是终端设备(例如前述的第二设备)，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6是本申请实施例的资源重选装置的一示意图。如图6所示，资源重选装置600包括：
接收单元601，其接收第一设备发送的协作信息；其中所述协作信息指示偏好资源和/或不偏好资源；以及
处理单元602，其对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
在一些实施例中，处理单元602还基于自身感知结果和/或协作信息确定上报给介质访问控制层的候选资源。
在一些实施例中，在所述第一资源与所述不偏好资源重叠或者所述第一资源不属于所述偏好资源的情况下，处理单元602确定对所述第一资源进行资源重选。
在一些实施例中，所述第一资源是需要抢占检测的资源。
在一些实施例中，在所述上报给介质访问控制层的候选资源不包括所述第一资源、所述第一资源与所述第二设备感知到的被预留资源重叠且所述被预留资源的RSRP高于RSRP阈值、并且所述第二设备的发送优先级数值大于所述被预留资源的优先级数值或者所述第二设备的发送优先级数值大于所述被预留资源的优先级数值且所述被预留资源的优先级数值小于配置或预配置的优先级阈值的情况下，处理单元602确定对所述第一资源进行资源重选。
在一些实施例中，所述第一资源是需要重评估的资源。
在一些实施例中，在所述上报给介质访问控制层的候选资源不包括所述第一资源的情况下，处理单元602确定对所述第一资源进行资源重选。
在一些实施例中，在所述第一资源与所述不偏好资源重叠或者所述第一资源不属于所述偏好资源的情况下，处理单元602确定在上报给介质访问控制层的候选资源中不包括所述第一资源。
在一些实施例中，在上报给介质访问控制层的候选资源包括与所述不偏好资源重叠的第二资源的情况下，所述第二资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
在一些实施例中，在上报给介质访问控制层的候选资源包括不属于所述偏好资源的第三资源的情况下，所述第三资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
在一些实施例中，处理单元602在从上报给介质访问控制层的候选资源中选择资源时，选择除所述第一资源以外的第四资源，或者选择不与所述第一资源重叠的第五资源。
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。资源重选装置600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6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，对于需要重评估或抢占检测的第一资源，至少根据协作信息确定是否对所述第一资源进行资源重选。由此，可以避免出现协作设备双方理解不一致的问题，提高设备间协作的准确性和有效性。
第四方面的实施例
本申请实施例提供一种设备间协作装置。该装置例如可以是终端设备(例如前述的第一设备)，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。
图7是本申请实施例的设备间协作装置的一示意图。如图7所示，设备间协作装置700包括：
生成单元701，其基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源；以及
发送单元702，其向第二设备发送所述协作信息；其中，所述协作信息被所述第二设备用于确定是否对需要重评估或抢占检测的第一资源进行资源重选。
在一些实施例中，在所述第二设备的上报给介质访问控制层的候选资源包括与所述不偏好资源重叠的第二资源的情况下，所述第二资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
在一些实施例中，在所述第二设备的上报给介质访问控制层的候选资源包括不属于所述偏好资源的第三资源的情况下，所述第三资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
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。设备间协作装置700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7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，对于需要重评估或抢占检测的第一资源，至少根据协作信息确定是否对所述第一资源进行资源重选。由此，可以避免出现协作设备双方理解不一致的问题，提高设备间协作的准确性和有效性。
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：
第一设备，其基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源，以及向第二设备发送所述协作信息；
第二设备，其接收所述第一设备发送的所述协作信息，以及对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
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8是本申请实施例的网络设备的构成示意图。如图8所示，网络设备800可以包括：处理器810(例如中央处理器CPU)和存储器820；存储器820耦合到处理器810。其中该存储器820可存储各种数据；此外还存储信息处理的程序830，并且在处理器810的控制下执行该程序830。
此外，如图8所示，网络设备800还可以包括：收发机840和天线850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800也并不是必须要包括图8中所示的所有部件；此外，网络设备800还可以包括图8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9是本申请实施例的终端设备的示意图。如图9所示，该终端设备900可以包括处理器910和存储器920；存储器920存储有数据和程序，并耦合到处理器910。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910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资源重选方法。例如处理器910可以被配置为进行如下的控制：接收第一设备发送的协作信息；其中所述协作信息指示偏好资源和/或不偏好资源；以及对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
再例如，处理器910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设备间协作方法。例如处理器910可以被配置为进行如下的控制：基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源；以及向第二设备发送所述协作信息；其中，所述协作信息被所述第二设备用于确定是否对需要重评估或抢占检测的第一资源进行资源重选。
如图9所示，该终端设备900还可以包括：通信模块930、输入单元940、显示器950、电源960。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900也并不是必须要包括图9中所示的所有部件，上述部件并不是必需的；此外，终端设备900还可以包括图9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方面的实施例所述的资源重选方法或者第二方面的实施例所述的设备间协作方法。
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方面的实施例所述的资源重选方法或者第二方面的实施例所述的设备间协作方法。
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1.一种资源重选方法，包括：
第二设备接收第一设备发送的协作信息；其中所述协作信息指示偏好资源和/或不偏好资源；以及
所述第二设备对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
附记2.根据附记1所述的方法，其中，所述方法还包括：
所述第二设备基于自身感知结果和/或所述协作信息确定上报给介质访问控制层的候选资源。
附记3.根据附记1所述的方法，其中，在所述第一资源与所述不偏好资源重叠 或者所述第一资源不属于所述偏好资源的情况下，所述第二设备确定对所述第一资源进行资源重选。
附记4.根据附记2所述的方法，其中，所述第一资源是需要抢占检测的资源。
附记5.根据附记4所述的方法，其中，在所述上报给介质访问控制层的候选资源不包括所述第一资源、所述第一资源与所述第二设备感知到的被预留资源重叠且所述被预留资源的RSRP高于RSRP阈值、并且所述第二设备的发送优先级数值大于所述被预留资源的优先级数值或者所述第二设备的发送优先级数值大于所述被预留资源的优先级数值且所述被预留资源的优先级数值小于配置或预配置的优先级阈值的情况下，所述第二设备确定对所述第一资源进行资源重选。
附记6.根据附记2所述的方法，其中，所述第一资源是需要重评估的资源。
附记7.根据附记6所述的方法，其中，在所述上报给介质访问控制层的候选资源不包括所述第一资源的情况下，所述第二设备确定对所述第一资源进行资源重选。
附记8.根据附记1至7任一项所述的方法，其中，在所述第一资源与所述不偏好资源重叠或者所述第一资源不属于所述偏好资源的情况下，所述第二设备确定在上报给介质访问控制层的候选资源中不包括所述第一资源。
附记9.根据附记1至7任一项所述的方法，其中，在上报给介质访问控制层的候选资源包括与所述不偏好资源重叠的第二资源的情况下，所述第二资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
附记10.根据附记1至7任一项所述的方法，其中，在上报给介质访问控制层的候选资源包括不属于所述偏好资源的第三资源的情况下，所述第三资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
附记11.根据附记1至7任一项所述的方法，其中，所述第二设备在从上报给介质访问控制层的候选资源中选择资源时，选择除所述第一资源以外的第四资源，或者选择不与所述第一资源重叠的第五资源。
附记12.一种设备间协作方法，包括：
第一设备基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源；以及
所述第一设备向第二设备发送所述协作信息；其中，所述协作信息被所述第二设备用于确定是否对需要重评估或抢占检测的第一资源进行资源重选。
附记13.根据附记12所述的方法，其中，在所述第二设备的上报给介质访问控制层的候选资源包括与所述不偏好资源重叠的第二资源的情况下，所述第二资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
附记14.根据附记12所述的方法，其中，在所述第二设备的上报给介质访问控制层的候选资源包括不属于所述偏好资源的第三资源的情况下，所述第三资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
附记15.一种终端设备，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11任一项所述的资源重选方法或者如附记12至14任一项所述的设备间协作方法。

Claims (15)

  1. 一种资源重选装置，包括：
    接收单元，其接收第一设备发送的协作信息；其中所述协作信息指示偏好资源和/或不偏好资源；以及
    处理单元，其对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
  2. 根据权利要求1所述的装置，其中，所述处理单元还基于自身感知结果和/或所述协作信息确定上报给介质访问控制层的候选资源。
  3. 根据权利要求1所述的装置，其中，在所述第一资源与所述不偏好资源重叠或者所述第一资源不属于所述偏好资源的情况下，所述处理单元确定对所述第一资源进行资源重选。
  4. 根据权利要求2所述的装置，其中，所述第一资源是需要抢占检测的资源。
  5. 根据权利要求4所述的装置，其中，在所述上报给介质访问控制层的候选资源不包括所述第一资源、所述第一资源与第二设备感知到的被预留资源重叠且所述被预留资源的参考信号接收功率高于阈值、并且所述第二设备的发送优先级数值大于所述被预留资源的优先级数值或者所述第二设备的发送优先级数值大于所述被预留资源的优先级数值且所述被预留资源的优先级数值小于配置或预配置的优先级阈值的情况下，所述处理单元确定对所述第一资源进行资源重选。
  6. 根据权利要求2所述的装置，其中，所述第一资源是需要重评估的资源。
  7. 根据权利要求6所述的装置，其中，在所述上报给介质访问控制层的候选资源不包括所述第一资源的情况下，所述处理单元确定对所述第一资源进行资源重选。
  8. 根据权利要求1所述的装置，其中，在所述第一资源与所述不偏好资源重叠或者所述第一资源不属于所述偏好资源的情况下，所述处理单元确定在上报给介质访问控制层的候选资源中不包括所述第一资源。
  9. 根据权利要求1所述的装置，其中，在上报给介质访问控制层的候选资源包括与所述不偏好资源重叠的第二资源的情况下，所述第二资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
  10. 根据权利要求1所述的装置，其中，在上报给介质访问控制层的候选资源包 括不属于所述偏好资源的第三资源的情况下，所述第三资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
  11. 根据权利要求1所述的装置，其中，所述处理单元在从上报给介质访问控制层的候选资源中选择资源时，选择除所述第一资源以外的第四资源，或者选择不与所述第一资源重叠的第五资源。
  12. 一种设备间协作装置，包括：
    生成单元，其基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源；以及
    发送单元，其向第二设备发送所述协作信息；其中，所述协作信息被所述第二设备用于确定是否对需要重评估或抢占检测的第一资源进行资源重选。
  13. 根据权利要求12所述的装置，其中，在所述第二设备的上报给介质访问控制层的候选资源包括与所述不偏好资源重叠的第二资源的情况下，所述第二资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
  14. 根据权利要求12所述的装置，其中，在所述第二设备的上报给介质访问控制层的候选资源包括不属于所述偏好资源的第三资源的情况下，所述第三资源是与所述第一资源不同的资源或者是不与所述第一资源重叠的资源。
  15. 一种通信系统，包括：
    第一设备，其基于自身感知结果生成协作信息，其中所述协作信息指示偏好资源和/或不偏好资源，以及向第二设备发送所述协作信息；
    第二设备，其接收所述第一设备发送的所述协作信息，以及对于需要重评估或抢占检测的第一资源，至少根据所述协作信息确定是否对所述第一资源进行资源重选。
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