WO2025015577A1 - Procédé de resélection de ressources, premier terminal, second terminal, système et support de stockage - Google Patents

Procédé de resélection de ressources, premier terminal, second terminal, système et support de stockage Download PDF

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Publication number
WO2025015577A1
WO2025015577A1 PCT/CN2023/108257 CN2023108257W WO2025015577A1 WO 2025015577 A1 WO2025015577 A1 WO 2025015577A1 CN 2023108257 W CN2023108257 W CN 2023108257W WO 2025015577 A1 WO2025015577 A1 WO 2025015577A1
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Prior art keywords
terminal
resources
resource
time slots
condition
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PCT/CN2023/108257
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English (en)
Chinese (zh)
Inventor
赵群
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Priority to CN202380010193.6A priority Critical patent/CN117158094A/zh
Priority to PCT/CN2023/108257 priority patent/WO2025015577A1/fr
Publication of WO2025015577A1 publication Critical patent/WO2025015577A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a resource reselection method, a first terminal, a second terminal, a system and a storage medium.
  • the terminal implements continuous multi-slot transmission through resource allocation, and continuously occupies the channels of unlicensed spectrum access during communication to avoid loss of channel occupancy time. In the process of continuous multi-slot transmission, if resource occupancy conflicts occur, resource reselection will be performed.
  • the direct link (SideLink) communication process on the unlicensed spectrum needs to adopt the method of continuous multi-slot transmission. How to perform resource re-evaluation and preemption detection in the process of continuous multi-slot transmission needs further discussion.
  • the embodiments of the present disclosure provide a resource reselection method, a first terminal, a second terminal, a system, and a storage medium.
  • a resource reselection method comprising: there is a first time slot in the time slots selected by the first terminal for continuous multi-slot transmission, the resources of the first time slot overlap with the resources reserved by the second terminal, and the resources in the first time slot for continuous multi-slot transmission are reported to the upper layer for resource re-evaluation or resource preemption, and if the conditions are met, resource reselection is performed.
  • a resource reselection method comprising: determining resources for resource reselection, the resources for resource reselection being determined by the first terminal through resource reselection when a condition is met; a first time slot exists in the time slots selected by the first terminal for continuous multi-slot transmission, the resources of the first time slot overlap with the resources reserved by the second terminal, and the resources in the first time slot for continuous multi-slot transmission are reported to a higher layer for resource re-evaluation or resource preemption.
  • a resource reselection method comprising:
  • the resources of the first time slot overlap with the resources reserved by the second terminal, and the resources in the first time slot used for continuous multi-slot transmission are reported to the upper layer for resource re-evaluation or resource preemption. If the conditions are met, resource reselection is performed; the second terminal determines the resources for resource reselection.
  • a first terminal comprising: a processing module, for reporting the resources used for continuous multi-slot transmission in the first time slot to a higher level for resource re-evaluation or resource preemption, and performing resource reselection if conditions are met when there is a first time slot in the time slots selected by the first terminal for continuous multi-slot transmission, and resources of the first time slot overlap with resources reserved by the second terminal.
  • a second terminal comprising: a processing module, used to determine resources for resource reselection, the resources for resource reselection are determined by the first terminal through resource reselection when a condition is met; there is a first time slot in the time slots selected by the first terminal for continuous multi-slot transmission, the resources of the first time slot overlap with the resources reserved by the second terminal, and the resources in the first time slot for continuous multi-slot transmission are reported to a higher layer for resource re-evaluation or resource preemption.
  • a first terminal comprising: one or more processors; wherein the processor is used to execute the resource reselection method of the first aspect.
  • a second terminal comprising: one or more processors; wherein the processor is used to execute the resource reselection method of the second aspect.
  • a communication system including a first terminal and a second terminal, wherein the first terminal is configured to implement the resource reselection method of the first aspect, and the second terminal is configured to implement the resource reselection method of the second aspect.
  • a storage medium stores instructions, and wherein when the instructions are executed on a communication device, the communication device executes the resource reselection method of any one of the first aspect and the second aspect.
  • the probability of resource congestion in the process of executing listen-before-talk between terminals is reduced, and the throughput of the terminals is increased from a system perspective.
  • FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.
  • FIG2A is an exemplary interactive diagram of a resource reselection method provided according to an embodiment of the present disclosure.
  • FIG2B is a schematic diagram showing a resource reselection according to an embodiment of the present disclosure.
  • FIG2C is a schematic diagram showing a resource reselection according to an embodiment of the present disclosure.
  • FIG3A is a schematic flow chart of a resource reselection method according to an embodiment of the present disclosure.
  • FIG3B is a schematic flow chart of a resource reselection method according to an embodiment of the present disclosure.
  • FIG3C is a flow chart of a resource reselection method according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic flow chart of a resource reselection method according to an embodiment of the present disclosure.
  • FIG5 is an interactive schematic diagram of a resource reselection method according to an embodiment of the present disclosure.
  • FIG. 6A is a schematic diagram of the structure of a first terminal proposed in an embodiment of the present disclosure.
  • FIG6B is a schematic diagram of the structure of the second terminal proposed in an embodiment of the present disclosure.
  • FIG. 7A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure.
  • FIG. 7B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a resource reselection method, a first terminal, a second terminal, a system, and a storage medium.
  • an embodiment of the present disclosure proposes a resource reselection method, which includes: there is a first time slot in the time slots selected by the first terminal for continuous multi-slot transmission, the resources of the first time slot overlap with the resources reserved by the second terminal, and the resources used for continuous multi-slot transmission in the first time slot are reported to the upper layer for resource re-evaluation or resource preemption, and if the conditions are met, resource reselection is performed.
  • the method of performing resource reselection in resources transmitted in multiple consecutive time slots is clarified, thereby reducing the probability of resource collision between terminals and further increasing the throughput of the terminals.
  • the condition includes at least one of the following:
  • a first condition wherein the first condition is that the number of the first time slot is 1, and the first terminal and the second terminal share a channel occupation time;
  • a second condition wherein the second condition includes at least one of the following: the number of the first time slots is 1 and the first terminal and the second terminal do not share the channel occupancy time, the priority value indicated by the side link control information corresponding to the second terminal is less than the priority value corresponding to the sending priority of all transmission blocks corresponding to the continuous multiple time slots, and the priority value indicated by the side link control information corresponding to the second terminal is less than the priority threshold value;
  • a third condition comprising: the number of the first time slots is multiple, some of the multiple first time slots satisfy the first condition, and the priority value indicated by the edge link control information corresponding to the third terminal is less than the priority value corresponding to the sending priority of all transmission blocks corresponding to the continuous multiple time slots;
  • the fourth condition includes: the number of the first time slots is multiple, some of the multiple first time slots exist that meet the second condition, and the priority value indicated by the edge link control information corresponding to the third terminal is greater than or equal to the priority value corresponding to the sending priority of one or more transmission blocks in all transmission blocks corresponding to the continuous multiple time slots.
  • the conditions for performing resource reselection are clarified, so that the terminal can perform resource reselection in the process of continuous multi-slot transmission based on the above conditions, so as to increase the throughput between terminals.
  • the condition includes the first condition, or includes the third condition
  • the resource reselection includes:
  • the objects for resource reselection under the first condition and the third condition are clarified to realize resource reselection under the first condition and the third condition in continuous multi-slot transmission.
  • the selected resource includes at least one of the following:
  • the reselected resources when performing resource reselection under the first condition and the third condition are clarified to realize the resource reselection under the first condition and the third condition in continuous multi-slot transmission.
  • the first time slot is a non-first time slot in the continuous multiple time slots.
  • the condition includes the second condition, or includes the fourth condition;
  • the resource reselection includes: reselecting resources for the time slots of the selected resources in the continuous multiple time slots.
  • the objects for performing resource reselection under the second condition and the fourth condition are clarified to realize resource reselection under the second condition and the fourth condition in continuous multi-slot transmission.
  • the reselected resources satisfy at least one of the following: the interval between the resources selected in the last time slot in the continuous multiple time slots and the resources reserved by the second terminal is greater than N, where N is a number in the time slot number set, and N is a positive integer; the interval between the resources selected in the first time slot in the continuous multiple time slots and the resources reserved by the second terminal is greater than M, and M is a positive integer.
  • the reselected resources when performing resource reselection under the second condition and the fourth condition are clarified to realize the resource reselection under the second condition and the fourth condition in continuous multi-slot transmission.
  • the first terminal and the second terminal share the channel occupation time, including at least one of the following:
  • the priority of the channel access of the second terminal is higher than or equal to the priority of the access of the channel occupation time of the first terminal
  • the continuous multiple time slots are sent based on unicast, and the target identifier corresponding to the first terminal matches the source identifier corresponding to the second terminal;
  • the continuous multiple time slots are sent based on multicast, and the target identifier corresponding to the first terminal matches the target identifier corresponding to the second terminal;
  • the continuous multiple time slots are sent based on broadcasting, and the target identifier corresponding to the first terminal matches the target identifier corresponding to the second terminal;
  • the target identifier indicated by the additional identifier matches the source identifier corresponding to the second terminal, and the additional identifier is determined based on the channel occupancy time sharing information sent by the first terminal;
  • the source identifier indicated by the additional identifier matches the target identifier corresponding to the second terminal;
  • the source identifier corresponding to the first terminal matches the target identifier of the second terminal
  • the continuous multiple time slots are sent based on multicast, and the target identifier indicated by the additional identifier matches the target identifier indicated by the direct connection control information reserved for the second terminal;
  • the continuous multiple time slots are sent based on broadcasting, and the target identifier indicated by the additional identifier matches the target identifier indicated by the second terminal reserved direct connection control information.
  • an embodiment of the present disclosure proposes a resource reselection method, the method comprising: determining resources for resource reselection, the resources for resource reselection are determined by the first terminal through resource reselection when a condition is met; there is a first time slot in the time slots selected by the first terminal for continuous multi-slot transmission, the resources of the first time slot overlap with the resources reserved by the second terminal, and the resources in the first time slot for continuous multi-slot transmission are reported to the higher layer for resource re-evaluation or resource preemption.
  • the resources for resource reselection are determined among the resources transmitted in consecutive multiple time slots, thereby reducing the probability of resource interference between terminals and further increasing the throughput of the terminals.
  • the condition includes at least one of the following:
  • a first condition wherein the first condition is that the number of the first time slot is 1, and the first terminal and the second terminal share a channel occupation time;
  • a second condition wherein the second condition includes at least one of the following: the number of the first time slots is 1 and the first terminal and the second terminal do not share the channel occupancy time, the priority value indicated by the side link control information corresponding to the second terminal is less than the priority value corresponding to the sending priority of all transmission blocks corresponding to the continuous multiple time slots, and the priority value indicated by the side link control information corresponding to the second terminal is less than the priority threshold value;
  • a third condition comprising: the number of the first time slots is multiple, some of the multiple first time slots satisfy the first condition, and the priority value indicated by the edge link control information corresponding to the third terminal is less than the priority value corresponding to the sending priority of all transmission blocks corresponding to the continuous multiple time slots;
  • the fourth condition includes: the number of the first time slots is multiple, some of the multiple first time slots exist that meet the second condition, and the priority value indicated by the edge link control information corresponding to the third terminal is greater than or equal to the priority value corresponding to the sending priority of one or more transmission blocks in all transmission blocks corresponding to the continuous multiple time slots.
  • the condition includes the first condition, or includes the third condition;
  • the resource reselection includes: reselecting resources for the first time slot.
  • the reselected resources include at least one of the following: resources within the channel occupancy time; resources within other time slots except the continuous multiple time slots within the channel occupancy time; resources within the first time slot.
  • the first time slot is a non-first time slot in the continuous multiple time slots.
  • the condition includes the second condition, or includes the fourth condition;
  • the resource reselection includes: reselecting resources for the time slots of the selected resources in the continuous multiple time slots.
  • the reselected resources satisfy at least one of the following: the interval between the resources selected in the last time slot in the continuous multiple time slots and the resources reserved by the second terminal is greater than N, and the number in the N time slot number set is taken, and N is a positive integer; the interval between the resources selected in the first time slot in the continuous multiple time slots and the resources reserved by the second terminal is greater than M, and M is a positive integer.
  • the first terminal and the second terminal share a channel occupation time, including at least one of the following:
  • the priority of the channel access of the second terminal is higher than or equal to the priority of the access of the channel occupation time of the first terminal
  • the continuous multiple time slots are sent based on unicast, and the target identifier corresponding to the first terminal matches the source identifier corresponding to the second terminal;
  • the continuous multiple time slots are sent based on multicast, and the target identifier corresponding to the first terminal matches the target identifier corresponding to the second terminal;
  • the continuous multiple time slots are sent based on broadcasting, and the target identifier corresponding to the first terminal matches the target identifier corresponding to the second terminal;
  • the target identifier indicated by the additional identifier matches the source identifier corresponding to the second terminal, and the additional identifier is determined based on the channel occupancy time sharing information sent by the first terminal;
  • the source identifier indicated by the additional identifier matches the target identifier corresponding to the second terminal;
  • the source identifier corresponding to the first terminal matches the target identifier of the second terminal
  • the continuous multiple time slots are sent based on multicast, and the target identifier indicated by the additional identifier matches the target identifier indicated by the second terminal reserved direct connection control information;
  • the continuous multiple time slots are sent based on broadcasting, and the target identifier indicated by the additional identifier matches the target identifier indicated by the second terminal reserved direct connection control information.
  • an embodiment of the present disclosure proposes a resource reselection method, the method comprising: a first time slot exists in the time slots selected by the first terminal for continuous multi-slot transmission, and resources of the first time slot overlap with resources reserved by the second terminal, and a resource re-evaluation or resource preemption is reported to a high layer for resources used for continuous multi-slot transmission in the first time slot, and if a condition is met, resource reselection is performed;
  • the second terminal determines a resource for resource reselection.
  • an embodiment of the present disclosure proposes a first terminal, comprising: a processing module, used to report the resources used for continuous multi-slot transmission in the first time slot to a higher level for resource re-evaluation or resource preemption, and if conditions are met, perform resource reselection when there is a first time slot in the time slots selected by the first terminal for continuous multi-slot transmission, and the resources of the first time slot overlap with the resources reserved by the second terminal.
  • an embodiment of the present disclosure proposes a second terminal and a processing module, which is used to determine resources for resource reselection, and the resources for resource reselection are determined by the first terminal through resource reselection when a condition is met; there is a first time slot in the time slots selected by the first terminal for continuous multi-slot transmission, and the resources of the first time slot overlap with the resources reserved by the second terminal, and the resources in the first time slot for continuous multi-slot transmission are reported to the higher layer for resource re-evaluation or resource preemption.
  • an embodiment of the present disclosure proposes a first terminal and one or more processors; wherein the processor is used to execute the resource reselection method described in any one of the first aspects.
  • an embodiment of the present disclosure proposes a communication system, comprising: a first terminal and a second terminal, wherein the first terminal is configured to implement the resource reselection method of the first aspect, and the second terminal is configured to implement the resource reselection method of the second aspect.
  • the first terminal, the second terminal, the communication system, and the storage medium are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.
  • the embodiments of the present disclosure propose a resource reselection method, a first terminal, a second terminal, a system, and a storage medium.
  • the terms resource reselection, information processing method, communication method, etc. can be replaced with each other
  • the terms first terminal, second terminal, resource reselection device, information processing device, communication device, etc. can be replaced with each other
  • the terms information processing system, communication system, etc. can be replaced with each other.
  • each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged.
  • the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • elements expressed in the singular form such as “a”, “an”, “the”, “above”, “said”, “aforementioned”, “this”, etc., may mean “one and only one", or “one or more”, “at least one”, etc.
  • the noun after the article may be understood as a singular expression or a plural expression.
  • plurality refers to two or more.
  • the terms "at least one of”, “one or more”, “a plurality of”, “multiple”, etc. can be used interchangeably.
  • the recording method of "A or B” may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed).
  • A A is executed independently of B
  • B B is executed independently of A
  • execution is selected from A and B (A and B are selectively executed).
  • prefixes such as “first” and “second” in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects.
  • the statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes.
  • the description object is a "field”
  • the ordinal number before the "field” in the "first field” and the "second field” does not limit the position or order between the "fields”
  • the "first” and “second” do not limit whether the "fields” they modify are in the same message, nor do they limit the order of the "first field” and the "second field”.
  • the description object is a "level”
  • the ordinal number before the "level” in the “first level” and the “second level” does not limit the priority between the "levels”.
  • the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device” as an example, the number of "devices” can be one or more.
  • the objects modified by different prefixes may be the same or different. For example, if the description object is "device”, then the “first device” and the “second device” may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information”, then the "first information” and the “second information” may be the same information or different information, and their contents may be the same or different.
  • “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • terms such as “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not lower than”, and “above” can be replaced with each other, and terms such as “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “no more than”, “lower than”, “lower than or equal to”, “not higher than”, and “below” can be replaced with each other.
  • devices and equipment may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, “subject”, etc.
  • network can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.
  • access network device may also be referred to as “radio access network device (RAN device)", “base station (BS)”, “radio base station (radio base station)”, “fixed station” and in some embodiments may also be understood as “node”, “access point (access point)”, “transmission point (TP)”, “reception point (RP)”, “transmission and/or reception point (transmission/reception point, TRP)", “panel”, “antenna panel”, “antenna array”, “cell”, “macro cell”, “small cell”, “femto cell”, “pico cell”, “sector”, “cell group”, “serving cell”, “carrier”, “component carrier”, “bandwidth part (bandwidth part, BWP)", etc.
  • RAN device radio access network device
  • base station base station
  • RP radio base station
  • TRP transmission and/or reception point
  • terminal or “terminal device” may be referred to as "user equipment (UE)", “user terminal (user terminal)”, “mobile station (MS)”, “mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.
  • FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • a communication system 100 includes a first terminal 101 and a second terminal 102 .
  • the first terminal 101 or the first terminal 102 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), and at least one of a wireless terminal device in a smart home (smart home), but is not limited to these.
  • a mobile phone a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR)
  • the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure.
  • a person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.
  • the following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto.
  • the subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4G the fourth generation mobile communication system
  • 5G 5G new radio
  • FAA Future Radio Access
  • RAT New Radio
  • NR New Radio
  • NX New radio access
  • the present invention relates to wireless communication systems such as LTE, Wi-Fi (X), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device to Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle to Everything (V2X), systems using other communication methods, and next-generation systems expanded based on them.
  • PLMN Public Land Mobile Network
  • D2D Device to Device
  • M2M Machine to Machine
  • IoT Internet of Things
  • V2X Vehicle to Everything
  • systems using other communication methods and next-generation systems expanded based on them.
  • next-generation systems expanded based on them.
  • a combination of multiple systems for example, a combination of
  • MCSt Multiple Consecutive Slots transmission
  • Rel-16 supports a solution for resource reselection to ensure smooth communication.
  • the resource reselection scheme supported by Rel-16 includes at least one of the following: resource re-evaluation and pre-emption detection.
  • resource reassessment In some embodiments, the terms “resource reassessment”, “resource reassessment”, “reassessment” and the like may be used interchangeably.
  • preemption detection In some embodiments, the terms “preemption detection”, “resource preemption”, “resource preemption detection” and the like may be used interchangeably.
  • the terms “resource collision”, “resource interference”, “resource conflict” and the like may be used interchangeably.
  • re-evaluation is required to trigger resource reselection if the selected but unreserved resource is not in the candidate resource set SA (candidate resource set SA) during re-evaluation (it is included in the candidate resource set SA during resource selection and selected through the resource selection process, but is found in the subsequent re-evaluation process that it no longer belongs to the candidate resource set SA).
  • the selected resource that has been indicated for reservation is not in the candidate resource set SA (it is included in the candidate resource set SA during resource selection and is selected through the resource selection process and has been previously reserved by the transmission indication from the same terminal, and it is found in the subsequent re-evaluation process that it no longer belongs to the candidate resource set SA), and the priority indicated in the SCI corresponding to the overlapping resource meets the requirements, for example: when the direct link resource preemption network (sl-Preemption Enable) in the resource pool (resource pool) is configured and meets the conditions ('enabled'), and prio TX >prio RX , resource reselection needs to be triggered.
  • prio TX is the priority corresponding to the transmission of the current user equipment (User Equipment, UE), and prio RX is the priority indicated by the corresponding sidelink control information (Sidelink Control Information, SCI) detected by the current UE.
  • SCI Servicelink Control Information
  • prio RX ⁇ prio pre is required. That is, when it is detected that the transmission priority of other UEs is higher than the priority threshold, the transmission resources of the current UE can be occupied, triggering resource reselection.
  • the above resource reselection scheme is not applied in the sidelink communication scenario, and there is no relevant resource reselection scheme for MCSt.
  • an embodiment of the present disclosure proposes a resource reselection method, which reduces the probability of resource congestion caused by resource preemption problems in LBT between terminals, thereby increasing the throughput of the terminal.
  • FIG2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2A , the embodiment of the present disclosure relates to a communication method, and the method includes:
  • Step S2101 the first terminal 101 determines a time slot for continuous multi-slot transmission.
  • the first terminal 101 determines that a first time slot exists in the time slots used for multiple consecutive slots transmission (MCSt).
  • the resources of the first time slot overlap with the resources reserved by the second terminal.
  • the resources used for MCSt in the first time slot are reported to the higher layer for resource re-evaluation or pre-emption.
  • the resources used for MCSt in the first time slot are reported by the physical layer to the higher layer for resource re-evaluation or occupation detection, and the higher layer triggers resource reselection.
  • frame radio frame
  • subframe slot
  • sub-slot sub-slot
  • mini-slot mini-slot
  • sub-slot sub-slot
  • mini-slot mini-slot
  • the terms “resource overlap”, “resource set overlap”, “resource set overlap”, “resource interference”, “resource set interference”, “resource set interference”, etc. can be used interchangeably.
  • Step S2102 the first terminal 101 sends a transmission block (TB) to the second terminal 102 based on continuous multiple time slots.
  • the first terminal 101 performs MCSt to the second terminal 102.
  • the second terminal 102 receives one or more TBs sent by the first terminal 101 based on continuous multiple time slots.
  • obtain can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.
  • Step S2103 the first terminal 101 determines whether the condition is met.
  • the condition includes at least one of the following: a first condition, a second condition, a third condition, and a fourth condition.
  • the number of first time slots is 1, and the first terminal 101 and the second terminal 102 share the channel occupancy time (Channel Occupancy Time, COT).
  • the second condition includes at least one of the following: the number of first time slots is 1 and the first terminal 101 and the second terminal 102 do not share a COT; the priority value indicated by the sidelink control information (Sidelink Control Information, SCI) corresponding to the second terminal 102 is less than the priority value corresponding to the transmission block sending priority corresponding to the continuous multi-time slots; the priority value indicated by the SCI corresponding to the second terminal 102 is less than the priority threshold value.
  • SCI Sidelink Control Information
  • the third condition is that there are multiple first time slots, some of the multiple first time slots meet the first condition, and the priority value indicated by the SCI corresponding to the third terminal is smaller than the priority value corresponding to the MCSt sending priority of all TBs.
  • the fourth condition is that the number of first time slots is multiple, some of the multiple first time slots meet the second condition, and the priority value indicated by the SCI corresponding to the third terminal is smaller than the priority value corresponding to the sending priority of all TBs of MCSt.
  • terms such as “uplink”, “uplink”, “physical uplink” can be interchangeable, and terms such as “downlink”, “downlink”, “physical downlink” can be interchangeable, and terms such as “side”, “sidelink”, “side communication”, “sidelink communication”, “direct connection”, “direct link”, “direct communication”, “direct link communication” can be interchangeable.
  • terms such as “certain”, “preset”, “preset”, “set”, “indicated”, “some”, “any”, and “first” can be interchangeable, and "specific A”, “preset A”, “preset A”, “set A”, “indicated A”, “some A”, “any A”, and “first A” can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.
  • the first terminal 101 and the second terminal 102 share a COT, including at least one of the following A) to I):
  • the priority of the channel access of the second terminal 102 is higher than or equal to the priority of the access of the COT of the first terminal 101.
  • the channel access priority class (CAPC) value indicated by the second terminal 102 is less than or equal to the CAPC value indicated in the channel occupancy time sharing information (Channel Occupancy Time-Shared Informition, COT-SI) of the first terminal.
  • CAPC channel access priority class
  • the CAPC value indicated by the second terminal 102 may be indicated based on the SCI, for example, it may be the first SCI (1st SCI) or the second SCI (2nd SCI).
  • the CAPC value indicated by the second terminal 102 may be expressed based on a priority value (priority).
  • the priority values are 0 to 7, and the corresponding CAPC values are 0 to 3.
  • the priority value ⁇ 0, 1 ⁇ can be set to correspond to a CAPC value of 0, the priority value ⁇ 2, 3 ⁇ to correspond to a CAPC value of 1, the priority value ⁇ 4, 5 ⁇ to correspond to a CAPC value of 2, and the priority value ⁇ 6, 7 ⁇ to correspond to a CAPC value of 3.
  • the CAPC priority corresponding to the priority value of "3" is smaller than the CAPC priority corresponding to the priority value of "2".
  • the continuous multiple time slots are sent based on broadcasting, and the target identifier corresponding to the first terminal 101 matches the target identifier corresponding to the second terminal 102.
  • the target identifier indicated by the additional identifier matches the source identifier corresponding to the second terminal 102, and the additional identifier is determined based on the channel occupancy time sharing information sent by the first terminal.
  • the source identifier indicated by the additional identifier matches the target identifier corresponding to the second terminal 102.
  • the source identifier corresponding to the first terminal 101 matches the target identifier of the second terminal 102.
  • the continuous multiple time slots are sent based on multicast, and the target identifier indicated by the additional identifier matches the target identifier indicated by the direct connection control information reserved by the second terminal 102.
  • the continuous multiple time slots are sent based on broadcast, and the target identifier indicated by the additional identifier matches the target identifier indicated by the direct connection control information reserved by the second terminal 102.
  • the identifier matches mentioned in B) to I) include at least one of the following: the identifiers are exactly the same; the lower 8 bits of the identifier physical layer are the same, and the
  • the first time slot under the first condition is a non-first time slot in MCSt.
  • the first condition is the case where the first terminal 101 and the second terminal 102 share the COT.
  • the first time slot resource of the MCSt overlaps with the resource reserved by the second terminal, it indicates that the COT at this time is initiated by the second terminal 102.
  • the first terminal 101 reserves resources for the second terminal 102 so that the second terminal 102 reselects resources. Therefore, under the first condition, the first terminal 101 cannot reselect resources on the shared COT.
  • Step S2104 If the conditions are met, the terminal 101 reselects resources.
  • performing resource reselection under the first condition or the third condition includes performing resource reselection on the first time slot.
  • the resources reselected under the first condition or the third condition include at least one of the following: resources within the COT; resources within other time slots within the COT except for continuous multiple time slots; resources within the first time slot.
  • FIG2B is a schematic diagram of a resource reselection shown according to an embodiment of the present disclosure.
  • the first terminal 101 and the second terminal 102 share the same COT, and the first terminal 101 performs resource reselection on the resources in the time slot in which the resource reselection is reported in the MCSt.
  • MCSt includes 4 slot resources, namely slot#0, slot#1, slot#2 and slot#3.
  • the physical layer reports resource reselection (resource re-evaluation or preemption detection) for the resources in slot#2.
  • the first terminal 101 triggers resource reselection for the resources in slot#2.
  • the corresponding reselected resource may be selected from all resources in the COT.
  • the corresponding reselected resources are resources in other time slots except the continuous multiple time slots in the COT, for example, other time slots except the continuous multiple time slots in the COT may include time slots except slot#0, slot#1, slot#2 and slot#3 in the COT.
  • the resources in other time slots except the continuous multiple time slots in the COT are resources in time slots except slot#0, slot#1, slot#2 and slot#3.
  • the corresponding reselected resources are resources in the first time slot, for example, resources in slot#2.
  • performing resource reselection under the second condition or the fourth condition includes: performing resource reselection on a time slot of selected resources in a plurality of consecutive time slots.
  • resource reselection is performed under the second condition or the fourth condition, and the interval between the resource selected in the last time slot in the continuous multiple time slots and the resource reserved by the second terminal 102 is greater than N, where N is the number value in the time slot number set and N is a positive integer.
  • the interval between the resources selected in the first time slot in the continuous multiple time slots and the resources reserved by the second terminal 102 is greater than M, where M is a positive integer.
  • FIG2C is a schematic diagram of a resource reselection according to an embodiment of the present disclosure.
  • the first terminal 101 and the second terminal 102 do not share a COT, and the first terminal 101 performs resource reselection on a time slot of a selected resource in a continuous multi-time slot.
  • slot#0, slot#1, slot#2, and slot#3 are all time slot resources that the first terminal 101 can trigger reselection.
  • the resources that can trigger reselection by the first terminal 101 must ensure that the interval between the last resource of the new MCSt and the resources reserved by the second terminal 102 is greater than N, or the interval between the first resource of MCSt and the resources reserved by the second terminal 102 is greater than M.
  • the reselected resource needs to satisfy at least one of the following:
  • the resource is separated from slot #0 by at least N slots;
  • the resource is separated from slot #3 by at least M slots.
  • N can be ⁇ 0, 1, 2 ⁇ slots, and the first terminal 101 determines the specific value of N through implementation; at the same time, the first terminal 101 also determines the value of M through its own implementation.
  • the first time slot under the second condition is a non-first time slot in MCSt.
  • Step S2105 The second terminal 102 determines resources for resource reselection.
  • terminal 102 determines the reselected resource based on the resource reselection result of terminal 101 .
  • steps S2101 and S2102 may be executed in an exchanged order or simultaneously
  • steps S2102 and S2104 may be executed in an exchanged order or simultaneously
  • steps S2103 and S2104 may be executed in an exchanged order or simultaneously
  • steps S2101 and S2105 may be executed in an exchanged order or simultaneously.
  • steps S2101, S2103, S2104, and S2105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S2101, S2102, S2103, and S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S2101, S2102, S2104, and S2105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S2101, S2102, S2103, and S2105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3A is a flow chart of a resource reselection method according to an embodiment of the present disclosure. As shown in FIG3A , an embodiment of the present disclosure relates to a resource reselection method, and the method includes:
  • Step S3101 determining a time slot for continuous multi-slot transmission.
  • step S3101 can refer to the optional implementation of step S2101 in FIG. 2A and other related parts in the embodiment involved in FIG. 2A , which will not be described in detail here.
  • Step S3102 sending TB based on continuous multiple time slots.
  • step S3102 can refer to the optional implementation of step S2102 in FIG. 2A and other related parts in the embodiment involved in FIG. 2A , which will not be described in detail here.
  • Step S3103 determine whether the conditions are met.
  • step S3103 can refer to the optional implementation of step S2103 in FIG. 2A and other related parts in the embodiment involved in FIG. 2A , which will not be described in detail here.
  • Step S3104 reselect resources if conditions are met.
  • step S3104 can refer to the optional implementation of step S2104 in FIG. 2A and other related parts of the embodiment involved in FIG. 2A , which will not be described in detail here.
  • the resource reselection method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3104.
  • step S3101 can be implemented as an independent embodiment
  • step S3102 can be implemented as an independent embodiment
  • step S3103 can be implemented as an independent embodiment
  • step S2104 can be implemented as an independent embodiment
  • steps S3101+S3102 can be implemented as an independent embodiment
  • steps S3101+S3103 can be implemented as an independent embodiment
  • steps S3101+S3102+S3104 can be implemented as an independent embodiment.
  • the steps S3101+S3102+S3103 can be implemented as independent embodiments, but are not limited thereto.
  • steps S3102 and S3103 may be executed in an order swapped or simultaneously, steps S3101 and S3103 may be executed in an order swapped or simultaneously, and steps S3102 and S3103 may be executed in an order swapped or simultaneously.
  • steps S3101 and S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • steps S3102 and S3103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • FIG3B is a flow chart of a resource reselection method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a resource reselection method, and the method includes:
  • Step S3201 sending TB based on continuous multiple time slots.
  • step S3201 can refer to step S2102 of FIG. 2A , the optional implementation of step S3102 of FIG. 3A , and other related parts in the embodiments involved in FIG. 2A and FIG. 3A , which will not be described in detail here.
  • Step S3202 determine whether the conditions are met.
  • step S3202 can refer to step S2103 of FIG. 2A , the optional implementation of step S3103 of FIG. 3A , and other related parts in the embodiments involved in FIG. 2A and FIG. 3A , which will not be described in detail here.
  • Step S3203 reselect resources if conditions are met.
  • step S3203 can refer to the optional implementation of step S2104 in Figure 2A, step S3104 in Figure 3A, and other related parts in the embodiments involved in Figures 2A and 3A, which will not be repeated here.
  • the resource reselection method involved in the embodiment of the present disclosure may include at least one of steps S3201 to S3203.
  • step S3201 may be implemented as an independent embodiment
  • step S3202 may be implemented as an independent embodiment
  • step S3203 may be implemented as an independent embodiment, but is not limited thereto.
  • step S3201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • step S3201 can be combined with steps S3103-S3104 of FIG. 3A
  • step S3202 can be combined with steps S3101, S3102, and S3104 of FIG. 3A .
  • FIG3C is a flow chart of a resource reselection method according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to a resource reselection method, and the method includes:
  • Step S3301 reselect resources if conditions are met.
  • step S3301 can refer to the optional implementation methods of step S2104 in Figure 2A, step S3103 and S3104 in Figure 3A, step S3202 and S3103 in Figure 3B, and other related parts in the embodiments involved in Figures 2A, 3A, and 3B, which will not be repeated here.
  • the method includes: there is a first time slot in the time slots selected by the first terminal 101 for continuous multi-slot transmission.
  • the resources of the first time slot overlap with the resources reserved by the second terminal 102, and the resources used for continuous multi-time slot transmission in the first time slot are reported to the upper layer for resource re-evaluation or resource preemption.
  • the condition includes at least one of the following:
  • a first condition is that the number of the first time slot is 1, and the first terminal 101 and the second terminal 102 share the channel occupation time;
  • the second condition includes at least one of the following: the number of first time slots is 1 and the first terminal 101 and the second terminal 102 do not share the channel occupation time, the priority value indicated by the side link control information corresponding to the second terminal 102 is less than the priority value corresponding to the sending priority of all transmission blocks corresponding to the continuous multi-time slots, and the priority value indicated by the side link control information corresponding to the second terminal 102 is less than the priority threshold value;
  • the third condition includes: the number of first time slots is multiple, some of the multiple first time slots meet the first condition, and the priority value indicated by the edge link control information corresponding to the third terminal is less than the priority value corresponding to the sending priority of all transmission blocks corresponding to the continuous multiple time slots;
  • the fourth condition includes: the number of first time slots is multiple, some of the multiple first time slots exist that meet the second condition, and the priority value indicated by the edge link control information corresponding to the third terminal is greater than or equal to the priority value corresponding to the sending priority of one or more transmission blocks in all transmission blocks corresponding to the continuous multiple time slots.
  • the condition includes the first condition, or includes the third condition; performing resource reselection includes: performing resource reselection on the first time slot.
  • the reselected resources include at least one of the following: resources within the channel occupation time; resources within other time slots except for continuous multiple time slots within the channel occupation time; resources within the first time slot.
  • the first time slot is a non-first time slot in the consecutive multiple time slots.
  • the condition includes the second condition, or includes the fourth condition; performing resource reselection includes: performing resource reselection on a time slot of selected resources in a plurality of consecutive time slots.
  • the reselected resources satisfy at least one of the following: the interval between the resources selected in the last time slot in the continuous multiple time slots and the resources reserved by the second terminal 102 is greater than N, where N is the number in the time slot number set and N is a positive integer; the interval between the resources selected in the first time slot in the continuous multiple time slots and the resources reserved by the second terminal 102 is greater than M, where M is a positive integer.
  • the first terminal 101 and the second terminal 102 share a channel occupation time, including at least one of the following:
  • the priority of the channel access of the second terminal 102 is higher than or equal to the priority of the access of the channel occupation time of the first terminal 101;
  • the continuous multi-slots are sent based on unicast, and the target identifier corresponding to the first terminal 101 matches the source identifier corresponding to the second terminal 102;
  • the continuous multiple time slots are sent based on multicast, and the target identifier corresponding to the first terminal 101 matches the target identifier corresponding to the second terminal 102;
  • the continuous multiple time slots are sent based on broadcast, and the target identifier corresponding to the first terminal 101 matches the target identifier corresponding to the second terminal 102;
  • the target identifier indicated by the additional identifier matches the source identifier corresponding to the second terminal 102, and the additional identifier is determined based on the channel occupancy time sharing information sent by the first terminal 101;
  • the source identifier indicated by the additional identifier matches the target identifier corresponding to the second terminal 102;
  • the source identifier corresponding to the first terminal 101 matches the target identifier of the second terminal 102;
  • the continuous multiple time slots are sent based on multicast, and the target identifier indicated by the additional identifier matches the target identifier indicated by the direct connection control information reserved by the second terminal 102;
  • the continuous multiple time slots are sent based on broadcasting, and the target identifier indicated by the additional identifier matches the target identifier indicated by the direct connection control information reserved by the second terminal 102.
  • step S3301 may be combined with steps S3102-S3103 of FIG. 3A
  • step S3301 may be combined with step S3202 of FIG. 3B .
  • FIG4 is a flow chart of a resource reselection method according to an embodiment of the present disclosure. As shown in FIG4 , the embodiment of the present disclosure relates to a resource reselection method, and the method includes:
  • Step S4101 determining resources for resource reselection.
  • step S4101 can refer to the optional implementation of step S2105 in FIG. 2A and other related parts in the embodiment involved in FIG. 2A , which will not be described in detail here.
  • terminal 102 determines the resource for resource reselection based on the result of resource reselection by terminal 101 .
  • resources for resource reselection are determined, and the resources for resource reselection are determined by the first terminal 101 through resource reselection when conditions are met; a first time slot exists in the time slots selected by the first terminal 101 for continuous multi-slot transmission, and the resources of the first time slot overlap with the resources reserved by the second terminal 102, and the resources in the first time slot for continuous multi-slot transmission are reported to the upper layer for resource re-evaluation or resource preemption.
  • the condition includes at least one of the following:
  • a first condition is that the number of the first time slot is 1, and the first terminal 101 and the second terminal 102 share the channel occupation time;
  • the second condition includes at least one of the following: the number of first time slots is 1 and the first terminal 101 and the second terminal 102 do not share the channel occupation time, the priority value indicated by the side link control information corresponding to the second terminal 102 is less than the priority value corresponding to the sending priority of all transmission blocks corresponding to the continuous multi-time slots, and the priority value indicated by the side link control information corresponding to the second terminal 102 is less than the priority threshold value;
  • the third condition includes: the number of first time slots is multiple, some of the multiple first time slots meet the first condition, and the priority value indicated by the edge link control information corresponding to the third terminal is less than the priority value corresponding to the sending priority of all transmission blocks corresponding to the continuous multiple time slots;
  • the fourth condition includes: the number of first time slots is multiple, some of the multiple first time slots exist that meet the second condition, and the priority value indicated by the edge link control information corresponding to the third terminal is greater than or equal to the priority value corresponding to the sending priority of one or more transmission blocks in all transmission blocks corresponding to the continuous multiple time slots.
  • the condition includes the first condition, or includes the third condition; performing resource reselection includes:
  • the reselected resources include at least one of the following: resources within the channel occupation time; resources within other time slots except the continuous multiple time slots within the channel occupation time; resources within the first time slot.
  • the first time slot is a non-first time slot in the consecutive multiple time slots.
  • the condition includes the second condition, or includes the fourth condition; performing resource reselection includes: performing resource reselection on a continuous multiple time slots Reselect resources in the time slot of the selected resource.
  • the reselected resources satisfy at least one of the following: the interval between the resources selected in the last time slot in the continuous multiple time slots and the resources reserved by the second terminal 102 is greater than N, which is a number in the N time slot number set, and N is a positive integer; the interval between the resources selected in the first time slot in the continuous multiple time slots and the resources reserved by the second terminal 102 is greater than M, and M is a positive integer.
  • the first terminal 101 and the second terminal 102 share a channel occupation time, including at least one of the following:
  • the priority of the channel access of the second terminal 102 is higher than or equal to the priority of the access of the channel occupation time of the first terminal 101;
  • the continuous multiple time slots are sent based on unicast, and the target identifier corresponding to the first terminal 101 matches the source identifier corresponding to the second terminal 102;
  • the continuous multiple time slots are sent based on multicast, and the target identifier corresponding to the first terminal 101 matches the target identifier corresponding to the second terminal 102;
  • the continuous multiple time slots are sent based on broadcast, and the target identifier corresponding to the first terminal 101 matches the target identifier corresponding to the second terminal 102;
  • the target identifier indicated by the additional identifier matches the source identifier corresponding to the second terminal 102, and the additional identifier is determined based on the channel occupancy time sharing information sent by the first terminal 101;
  • the source identifier indicated by the additional identifier matches the target identifier corresponding to the second terminal 102;
  • the source identifier corresponding to the first terminal 101 matches the target identifier of the second terminal 102;
  • the continuous multiple time slots are sent based on multicast, and the target identifier indicated by the additional identifier matches the target identifier indicated by the direct connection control information reserved by the second terminal 102;
  • the continuous multiple time slots are sent based on broadcasting, and the target identifier indicated by the additional identifier matches the target identifier indicated by the direct connection control information reserved by the second terminal 102.
  • FIG5 is an interactive schematic diagram of a resource reselection method according to an embodiment of the present disclosure. As shown in FIG5 , an embodiment of the present disclosure relates to a resource reselection method, and the method includes:
  • Step S5101 the first terminal 101 sends TB to the second terminal 102 based on continuous multiple time slots.
  • step S5101 may refer to step S2101 and step S2102 in FIG. 2A , step S3101 to step S3102 in FIG. 3A , and other related parts of the embodiments involved in FIG. 2A and FIG. 3A , which will not be described in detail here.
  • Step S5102 The first terminal 101 meets the conditions for reselecting resources.
  • the resources of the first time slot overlap with the resources reserved by the second terminal 102, and the resources used for continuous multi-slot transmission in the first time slot are reported to the upper layer for resource re-evaluation or resource preemption. If the conditions are met, resource reselection is performed.
  • step S5102 may refer to step S2103 and step S2104 in FIG. 2A , step S3103 to step S3104 in FIG. 3A , and other related parts of the embodiments involved in FIG. 2A and FIG. 3A , which will not be described in detail here.
  • Step S5103 The second terminal 102 determines the resources for resource reselection.
  • step S5103 can refer to step S2105 of FIG. 2A , step S4101 of FIG. 4 , and other related parts of the embodiments involved in FIG. 2A and FIG. 4 , which will not be described in detail here.
  • the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.
  • This embodiment also provides a resource reselection method to solve the following problem: Although the prior art has supported MCSt sending in Rel-18 and has discussed how to perform resource selection in MCSt, further discussion is needed on how to perform resource re-evaluation and preemption detection in MCSt.
  • Resource reselection methods include:
  • the first terminal determines whether the first judgment condition is met: when the resources reserved by the second terminal overlap with the resources in one of the multiple slots selected by it for MCSt sending, and causes the physical layer of the first terminal to report re-evaluation or pre-emption to the higher layer, the first terminal determines that the second terminal can share the COT initiated by it.
  • the first terminal determines that the second terminal can share the COT initiated by the first terminal, including at least one of the following a) to c):
  • a) including but not limited to the channel access level (CAPC) value indicated by the second terminal being less than or equal to the CAPC value indicated in the COT sharing information COT-SI of the first terminal.
  • CAC channel access level
  • the second terminal may display the indicated channel access level (CAPC) value, that is, include the information in the 1st SCI or 2nd SCI for indication, or may implicitly indicate the CAPC value through the indicated priority value (priority). For example, if the priority value is 0 to 7 and the CAPC value is 0 to 3, the CAPC value corresponding to priority 0,1 is 0; the CAPC value corresponding to priority 2,3 is 1; the CAPC value corresponding to priority 4,5 is 2; and the CAPC value corresponding to priority 6,7 is 3.
  • CAC channel access level
  • the destination ID indicated in the SCI of the first terminal matches the source ID of the second terminal (the match here may not be exactly the same, only the lower 8 or 16 bits of the physical layer are the same, and the remaining 16 or 8 bits are included in the MAC layer), and/or the source ID of the first terminal matches the destination ID of the second terminal; or when the transmission type is multicast or broadcast, the destination ID indicated in the SCI of the first terminal matches the destination ID indicated by the reserved SCI of the second terminal.
  • the destination ID in the additional ID may match the source ID of the second terminal (the match here may not be exactly the same, but the lower 8 or 16 bits of the physical layer are the same, and the remaining 16 or 8 bits are included in the MAC layer), and/or the source ID of the first terminal may match the destination ID of the second terminal; or when the sending type is multicast or broadcast, the destination ID indicated in the additional ID matches the destination ID indicated by the reserved SCI of the second terminal.
  • the first terminal when the first terminal determines that the second terminal can share the COT initiated by it, the first terminal triggers resource reselection only for resources in the time slot for which re-evaluation or pre-emption is reported to the higher layer.
  • the time slot where the reselected resource is located is still within the COT time initiated by the current first terminal, and is not located in the same slot as the remaining slots where the first terminal sends the selected resource for MCSt.
  • the first terminal selects resources in four consecutive slots (#0, #1, #2, #3) for MCSt transmission, and the physical layer reports re-evaluation/pre-emption for the resources in slot #2, if the first terminal determines that the second terminal can share the COT currently initiated by it, it will only trigger resource reselection for the resources in slot #2.
  • the corresponding reselected resource is not in slot #0, #1, and #3, and is within the COT time initiated by the first terminal.
  • the above scheme is only applicable to the case where the slot where the resources for re-evaluation/pre-emption occur in MCSt is a slot other than the first slot, and is not applicable to the case where the resources in the first slot sent by MCSt occur re-evaluation/pre-emption.
  • the first terminal if the first judgment condition is not met and the first terminal determines that the second terminal cannot share the COT initiated by it, the first terminal triggers resource reselection after reporting evaluation/pre-emption to the physical layer for all selected resources in the MCSt.
  • the priority indicated in the SCI corresponding to the reserved resources of the second terminal needs to be higher than the priority sent by all TBs in the MCSt; otherwise, the current resources are not reselected.
  • the resources reselected by the first terminal when the priority corresponding to the reserved resources of the second terminal is higher than a threshold (based on the capabilities of the first terminal), the resources reselected by the first terminal must ensure that the interval between the last resource of the new MCSt and the resources reserved by UE2 is greater than N, or the interval between the first resource of MCSt and the resources reserved by UE2 is greater than M.
  • N can be ⁇ 0, 1, 2 ⁇ slots, and the first terminal determines the specific value of N through implementation; at the same time, the first terminal also determines the value of M through its own implementation.
  • the scheme when the first judgment condition is not met is applicable to the case where the slot where the resource where re-evaluation/pre-emption occurs in MCSt is the first slot, that is, at this time the first terminal does not need to determine whether the second terminal can share the COT initiated by it, and all are executed according to the above scheme.
  • re-evaluation or pre-emption occurs in resources of multiple slots in MCst, but only part of the reservations meet the first decision condition (such as the reservation of the second terminal meets, and the reservation of the third terminal does not meet), at least one of the following is included:
  • the resource re-evaluation and resource preemption detection mechanism sent by MCSt is specified, as well as how to perform corresponding resource reselection to minimize the LBT blocking probability between UEs and increase the UE throughput from a system perspective.
  • the embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods.
  • a device is also proposed, including a unit or module for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.
  • a network device such as an access network device, a core network function node, a core network device, etc.
  • the division of the units or modules in the above devices is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation.
  • the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, instructions are stored in the memory, and the processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above devices, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device.
  • CPU central processing unit
  • microprocessor a microprocessor
  • the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all units or modules can be realized by designing the hardware circuits.
  • the above hardware circuits can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), which is implemented by The design of the logical relationship of the components in the circuit realizes the functions of some or all of the above units or modules; for example, in another implementation, the above hardware circuit can be realized by a programmable logic device (PLD), taking a field programmable gate array (FPGA) as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured through a configuration file, so as to realize the functions of some or all of the above units or modules. All units or modules of the above device can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part in the form of software called by the processor, and the rest in the form of hardware circuits.
  • the processor is a circuit with signal processing capability.
  • the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.
  • ASIC Neural Network Processing Unit
  • NPU Neural Network Processing Unit
  • TPU Tensor Processing Unit
  • DPU Deep Learning Processing Unit
  • FIG6A is a schematic diagram of the structure of the first terminal proposed in an embodiment of the present disclosure.
  • the first terminal 6100 may include: a processing module 6101.
  • the processing module 6101 is used to report the resource re-evaluation or resource preemption of the resources used for continuous multi-slot transmission in the first time slot to the upper layer, and if the conditions are met, perform resource reselection.
  • the processing module 6101 is used to execute at least one of the steps (such as step S2101, step S2103, step S2104, but not limited to this) of information processing in any of the above methods performed by the first terminal 101 in any of the above methods, which will not be repeated here.
  • FIG. 6B is a schematic diagram of the structure of the second terminal proposed in an embodiment of the present disclosure.
  • the second terminal 6200 may include: a processing module 6201.
  • the processing module 6201 is used by the second terminal to determine the resources for resource reselection, and the resources for resource reselection are determined by the first terminal through resource reselection when a condition is met; there is a first time slot in the time slot selected by the first terminal for continuous multi-slot transmission, and the resources of the first time slot overlap with the resources reserved by the second terminal, and the resources used for continuous multi-slot transmission in the first time slot report resource re-evaluation or resource preemption to the upper layer.
  • the processing module 6201 is used to execute at least one of the steps (for example, step S2105) of performing information processing in any of the above methods performed by the second terminal 102 in any of the above methods, which will not be repeated here.
  • FIG7A is a schematic diagram of the structure of a communication device 7100 proposed in an embodiment of the present disclosure.
  • the communication device 7100 may be a network device (e.g., an access network device, a core network device, etc.), or a terminal (e.g., a user device, etc.), or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods.
  • the communication device 7100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.
  • the communication device 7100 includes one or more processors 7101.
  • the processor 7101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and the communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a program, and process the data of the program.
  • the communication device 7100 is used to execute any of the above methods.
  • the communication device 7100 further includes one or more memories 7102 for storing instructions.
  • the memory 7102 may also be outside the communication device 7100.
  • the communication device 7100 further includes one or more transceivers 7103.
  • the transceiver 7103 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2101, step S2103, but not limited thereto), and the processor 7101 performs at least one of the other steps (for example, step S2102, step S2104, but not limited thereto).
  • the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated.
  • the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.
  • the communication device 7100 may include one or more interface circuits 7104.
  • the interface circuit 7104 is connected to the memory 7102, and the interface circuit 7104 may be used to receive signals from the memory 7102 or other devices, and may be used to send signals to the memory 7102 or other devices.
  • the interface circuit 7104 may read instructions stored in the memory 7102 and send the instructions to the processor 7101.
  • the communication device 7100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7A.
  • the communication device may be an independent device or may be part of a larger device.
  • the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.
  • FIG. 7B is a schematic diagram of the structure of a chip 7200 provided in an embodiment of the present disclosure.
  • the communication device 7100 may be a chip or a chip system
  • the chip 7200 includes one or more processors 7201, and the chip 7200 is used to execute any of the above methods.
  • the chip 7200 further includes one or more interface circuits 7202.
  • the interface circuit 7202 is connected to the memory 7203.
  • the interface circuit 7202 can be used to receive signals from the memory 7203 or other devices, and the interface circuit 7202 can be used to send signals to the memory 7203 or other devices.
  • the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.
  • the interface circuit 7202 executes at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2101, step S2103, but not limited to this), and the processor 7201 executes at least one of the other steps (for example, step S2102, step S2104, but not limited to this).
  • interface circuit interface circuit
  • transceiver pin transceiver
  • the chip 7200 further includes one or more memories 7203 for storing instructions.
  • the memory 7203 may be outside the chip 7200.
  • the present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 7100, the communication device 7100 executes any of the above methods.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices.
  • the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.
  • the present disclosure also proposes a program product, which, when executed by the communication device 7100, enables the communication device 7100 to execute any of the above methods.
  • the program product is a computer program product.
  • the present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

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

Abstract

La présente divulgation concerne un procédé de resélection de ressources, un premier terminal, un second terminal, un système et un support de stockage. Le procédé de resélection de ressources comprend les étapes suivantes : lorsqu'un premier créneau existe parmi des créneaux sélectionnés par un premier terminal et utilisés pour une transmission à créneaux multiples continue, des ressources du premier créneau se chevauchent avec des ressources réservées par un second terminal, et une réévaluation de ressources ou une préemption de ressources est communiquée à une couche supérieure pour les ressources dans le premier créneau qui sont utilisées pour une transmission à créneaux multiples continue, si une condition est respectée, effectuer une resélection de ressources. La présente divulgation peut réduire la probabilité de congestion de ressources dans le processus d'exécution d'une écoute avant transmission entre des terminaux, et augmenter le débit des terminaux du point de vue du système.
PCT/CN2023/108257 2023-07-19 2023-07-19 Procédé de resélection de ressources, premier terminal, second terminal, système et support de stockage Pending WO2025015577A1 (fr)

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CN202380010193.6A CN117158094A (zh) 2023-07-19 2023-07-19 资源重选方法、第一终端、第二终端、系统及存储介质
PCT/CN2023/108257 WO2025015577A1 (fr) 2023-07-19 2023-07-19 Procédé de resélection de ressources, premier terminal, second terminal, système et support de stockage

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WO2025160793A1 (fr) * 2024-01-31 2025-08-07 Qualcomm Incorporated Gestion de préemption de ressources de bloc dans une sélection de ressources de liaison latérale autonome

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