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WO2025030441A1 - Procédé de détermination de porteuse, premier terminal, second terminal et dispositif de réseau - Google Patents

Procédé de détermination de porteuse, premier terminal, second terminal et dispositif de réseau Download PDF

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Publication number
WO2025030441A1
WO2025030441A1 PCT/CN2023/112070 CN2023112070W WO2025030441A1 WO 2025030441 A1 WO2025030441 A1 WO 2025030441A1 CN 2023112070 W CN2023112070 W CN 2023112070W WO 2025030441 A1 WO2025030441 A1 WO 2025030441A1
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WO
WIPO (PCT)
Prior art keywords
terminal
carrier
indication information
sending
supported
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
PCT/CN2023/112070
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English (en)
Chinese (zh)
Inventor
赵力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to CN202380010519.5A priority Critical patent/CN119948983A/zh
Priority to PCT/CN2023/112070 priority patent/WO2025030441A1/fr
Publication of WO2025030441A1 publication Critical patent/WO2025030441A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a method for determining a carrier, a first terminal, a second terminal, and a network device.
  • the system transmission bandwidth can be increased, such as by adopting carrier aggregation (CA).
  • CA carrier aggregation
  • the method disclosed in the present invention can be used to solve the technical problem of "how to determine the carrier used for carrier aggregation of a transmitting terminal and a receiving terminal".
  • the embodiments of the present disclosure provide a method for determining a carrier, a first terminal, a second terminal, and a network device.
  • a method for determining a carrier including:
  • the sidelink data is sent to the second terminal via the first carrier.
  • a method for determining a carrier is provided, which is performed by a second terminal.
  • the method includes:
  • first indication information sent by a first terminal, where the first indication information is used to indicate a first carrier used for carrier aggregation, and the second terminal is a terminal that establishes a unicast connection with the first terminal;
  • the sidelink data sent by the first terminal is received through the first carrier.
  • a method for determining a carrier is provided, which is performed by a network device.
  • the method includes:
  • the second indication information is used to indicate a second carrier supported by the second terminal
  • the third indication information is used to indicate a third carrier that the second terminal preferably supports
  • the fourth indication information is used to indicate that the second terminal rejects the first indication information
  • the first indication information is used to indicate a first carrier used for carrier aggregation
  • the first carrier is used by the first terminal to send sidelink data to the second terminal.
  • a method for determining a carrier comprising:
  • a first terminal determines a first carrier for carrier aggregation; sends first indication information to a second terminal, where the first indication information is used to indicate the first carrier, and the second terminal is a terminal that establishes a unicast connection with the first terminal; and sends sidelink data to the second terminal through the first carrier.
  • the second terminal receives the first indication information sent by the first terminal and receives the sidelink data sent by the first terminal through the first carrier.
  • a first terminal including:
  • a processing module configured to determine a first carrier for carrier aggregation
  • the transceiver module is used to send first indication information to a second terminal, where the first indication information is used to indicate the first carrier, and the second terminal is a terminal that establishes a unicast connection with the first terminal; and send sidelink data to the second terminal via the first carrier.
  • a second terminal including:
  • the transceiver module is used to receive first indication information sent by a first terminal, where the first indication information is used to indicate a first carrier used for carrier aggregation, and the second terminal is a terminal that establishes a unicast connection with the first terminal; and receive sidelink data sent by the first terminal through the first carrier.
  • a network device including:
  • a transceiver module is used to receive one or more of a second indication information, a third indication information, and a fourth indication information sent by a first terminal, wherein the second indication information is used to indicate a second carrier supported by the second terminal, the third indication information is used to indicate a third carrier that is preferentially supported by the second terminal, and the fourth indication information is used to indicate that the second terminal rejects the first indication information; the first indication information is used to indicate a first carrier used for carrier aggregation, and the first carrier is used by the first terminal to send sidelink data to the second terminal.
  • a communication device including:
  • processors one or more processors
  • the communication device is used to execute the method for determining the carrier described in the embodiment of the first aspect.
  • a second terminal including:
  • processors one or more processors
  • the communication device is used to execute the method for determining the carrier described in the embodiment of the second aspect.
  • a communication device including:
  • processors one or more processors
  • the communication device is used to execute the method for determining the carrier described in the embodiment of the third aspect.
  • a communication system including a first terminal, a second terminal and a network device, wherein the first terminal is configured to implement the method for determining the carrier described in the embodiment of the first aspect, the second terminal is configured to implement the method for determining the carrier described in the embodiment of the second aspect, and the network device is configured to implement the method for determining the carrier described in the embodiment of the third aspect.
  • a storage medium which stores instructions.
  • the communication device executes the method for determining a carrier as described in any one of the first aspect, the second aspect, and the third aspect.
  • the first terminal may determine the first carrier used for carrier aggregation, and notify the second terminal having a unicast connection with the first terminal of the first carrier.
  • the transmitting terminal may determine the carrier used for carrier aggregation used by the transmitting terminal and the receiving terminal for unicast communication, and notify the receiving terminal, and then send the sidelink data to the receiving terminal through the carrier used for carrier aggregation, so that the receiving terminal can receive the sidelink data through the carrier used for carrier aggregation, which can reduce the carrier monitored by the receiving terminal and save power.
  • FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • 2A-2B are interactive schematic diagrams showing a method for determining a carrier according to an embodiment of the present disclosure
  • 3A-3G are flowcharts of a method for determining a carrier according to an embodiment of the present disclosure
  • 4A-4D are flowchart diagrams of a method for determining a carrier according to an embodiment of the present disclosure
  • 5A-5D are interactive schematic diagrams showing a method for determining a carrier according to an embodiment of the present disclosure
  • FIG6 is an interactive schematic diagram of a method for determining a carrier according to an embodiment of the present disclosure.
  • FIG7A is a schematic diagram of the structure of a first terminal provided in an embodiment of the present disclosure.
  • FIG7B is a schematic diagram of the structure of a second terminal proposed in an embodiment of the present disclosure.
  • FIG7C is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.
  • FIG8A is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure.
  • FIG8B 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 method for determining a carrier, a first terminal, a second terminal, and a network device.
  • an embodiment of the present disclosure provides a method for determining a carrier, which is performed by a first terminal, and the method includes:
  • the sidelink data is sent to the second terminal via the first carrier.
  • the first terminal can determine the first carrier used for carrier aggregation, and notify the first terminal of the first carrier to the second terminal that has a unicast connection with the first terminal.
  • the transmitting terminal can determine the carrier used for carrier aggregation used by the transmitting terminal and the receiving terminal for unicast communication, and notify the receiving terminal, and then send the sidelink data to the receiving terminal through the carrier used for carrier aggregation, so that the receiving terminal can receive the sidelink data through the carrier used for carrier aggregation, which can reduce the carrier monitored by the receiving terminal and save power.
  • the method further includes:
  • Second indication information is used to indicate a second carrier supported by the second terminal
  • third indication information is used to indicate a third carrier that the second terminal preferentially supports
  • fourth indication information is used to instruct the second terminal to reject the first indication information
  • the first terminal can obtain the capability information of the second terminal, and when the second terminal rejects the carrier determined by the first terminal for carrier aggregation, it can obtain corresponding information, so that when the terminal capability is limited, it can determine or redetermine the carrier for carrier aggregation based on the capability information of the second terminal, information of rejecting the first indication information, etc.
  • determining the first carrier for carrier aggregation includes:
  • the first carrier is determined or re-determined according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • the first terminal can determine or redetermine the carrier used for carrier aggregation based on the capability information of the second terminal, information of rejecting the first indication information, etc., thereby ensuring that both the first terminal and the second terminal support the carrier used for carrier aggregation, avoiding the loss of data packets sent by the first terminal to the second terminal, and improving the communication quality.
  • the method further includes:
  • the first terminal may also report the second indication information to the network device, so that the network device can obtain the capability information of the second terminal, the information of rejecting the first indication information, and the like.
  • determining the first carrier for carrier aggregation includes:
  • the first carrier is determined according to the fifth indication information.
  • the network device can determine or redetermine the carrier used for carrier aggregation and notify the first terminal, so that the first terminal can determine the carrier used for carrier aggregation according to the fifth indication information sent by the network device, thereby saving resources of the first terminal, reducing the carrier monitored by the second terminal, and saving power.
  • the method further includes:
  • the first terminal can send a request message to the second terminal to request the carrier supported and the preferred supported carrier of the second terminal.
  • the second terminal can send the second indication message and/or the third indication message to the first terminal, thereby improving the accuracy of information sending, reducing the number of interactions between terminals, and saving resources.
  • sending request information to the second terminal includes:
  • the resource allocation mode of the first terminal changes, and the request information is sent to the second terminal.
  • the first terminal can send a request message to the second terminal when the resource allocation method sends a change, so as to obtain the current supported carrier and the current preferred supported carrier of the second terminal when the resource allocation method changes, so as to determine the carrier used for carrier aggregation, and ensure that the first terminal and the second terminal both support the carrier used for carrier aggregation, so as to avoid the loss of data packets sent by the first terminal to the second terminal due to the limited terminal capabilities and the carrier supported by the sending terminal being different from the carrier supported by the receiving terminal, thereby improving the communication quality.
  • sending request information to the second terminal includes:
  • the resource allocation mode of the first terminal is configured or reconfigured from a mode of network scheduling sending resources to a mode of autonomously selecting sending resources, and the request information is sent to the second terminal.
  • the first terminal can send a request message to the second terminal when the resource allocation mode is configured or reconfigured from a network-scheduled resource sending mode to an autonomous resource selection mode, thereby obtaining the second terminal's currently supported carrier and currently preferred supported carrier when the resource allocation mode changes, so as to determine the carrier used for carrier aggregation, and ensure that both the first terminal and the second terminal support the carrier used for carrier aggregation, so as to avoid the loss of data packets sent by the first terminal to the second terminal due to the limited terminal capabilities and the carrier supported by the sending terminal being different from the carrier supported by the receiving terminal, thereby improving the communication quality.
  • the supported second carrier includes a carrier that supports sending and/or supports receiving
  • the preferred supported third carrier includes a carrier that preferably supports sending and/or preferably supports receiving.
  • the first terminal can be aware of the carriers that the second terminal supports sending and/or supports receiving, and the carriers that the second terminal preferentially supports sending and/or preferentially supports receiving, thereby avoiding the problem of data packet loss or inability to communicate due to the limited terminal capabilities, where the carriers supported by the sending terminal and the carriers supported by the receiving terminal are different.
  • the method further includes:
  • the first terminal does not support transmission on the carrier supported by the second terminal, releases the unicast connection with the second terminal, or uses a single carrier to send sidelink data to the second terminal.
  • the unicast connection can be released to avoid continuing to send data and wasting resources, or a single carrier can be used to send sidelink data to the second terminal to ensure unicast communication between the first terminal and the second terminal.
  • the resource allocation method of the first terminal is a method of autonomously selecting sending resources.
  • a carrier for carrier aggregation can be determined and notified to the receiving terminal, thereby reducing the carriers monitored by the receiving terminal and saving power.
  • an embodiment of the present disclosure provides a method for determining a carrier, which is performed by a second terminal and includes:
  • first indication information sent by a first terminal, where the first indication information is used to indicate a first carrier used for carrier aggregation, and the second terminal is a terminal that establishes a unicast connection with the first terminal;
  • the sidelink data sent by the first terminal is received through the first carrier.
  • the second terminal that has a unicast connection with the first terminal can receive the first indication information sent by the first terminal, so that the second terminal can determine the first carrier for carrier aggregation based on the first indication information, and receive the side link data sent by the first terminal through the first carrier, thereby reducing the carriers monitored by the receiving terminal and saving power.
  • the method further includes:
  • One or more of second indication information, third indication information, and fourth indication information are sent to the first terminal, where the second indication information is used to indicate a second carrier supported by the second terminal, the third indication information is used to indicate a third carrier that is preferentially supported by the second terminal, and the fourth indication information is used to instruct the second terminal to reject the first indication information.
  • the second terminal can send the carriers supported by itself, the preferred supported carriers, the information of rejecting the first indication information, etc. to the first terminal, so that the second terminal can obtain this information, thereby avoiding the problem of data packet loss or communication failure caused by the carrier supported by the sending terminal and the carrier supported by the receiving terminal being different due to limited terminal capabilities, thereby improving the quality of unicast communication.
  • the method further includes:
  • the second terminal after receiving the request information sent by the first terminal, the second terminal can send the second indication information and/or the third indication information to the first terminal, thereby improving the accuracy of sending, reducing the number of interactions between terminals, and saving resources.
  • sending one or more of the second indication information, the third indication information, and the fourth indication information to the first terminal includes one or more of the following:
  • the second indication information changes compared to the previous second indication information, and the second indication information is sent to the first terminal;
  • the third indication information is changed compared with the previous third indication information, and the third indication information is sent to the first terminal.
  • the second terminal can notify the first terminal of the carrier currently supported by itself when the second carrier supported by itself changes, and notify the first terminal of the carrier currently preferred to support itself when the second carrier supported by itself changes. In this way, the second terminal can promptly notify the first terminal when the carrier supported by itself and/or the preferred supported carrier changes.
  • the supported second carrier includes a carrier that supports sending and/or supports receiving
  • the preferred supported third carrier includes a carrier that preferably supports sending and/or preferably supports receiving.
  • the second terminal can notify the first terminal of the carriers that it supports sending and/or supports receiving, and the carriers that it prefers to support sending and/or preferably supports receiving, thereby avoiding the problem of data packet loss or communication failure caused by the carriers supported by the sending terminal and the receiving terminal being different due to limited terminal capabilities.
  • an embodiment of the present disclosure provides a method for determining a carrier, which is performed by a network device, and the method includes:
  • the second indication information is used to indicate a second carrier supported by the second terminal
  • the third indication information is used to indicate a third carrier that the second terminal preferably supports
  • the fourth indication information is used to indicate that the second terminal rejects the first indication information
  • the first indication information is used to indicate a first carrier used for carrier aggregation
  • the first carrier is used by the first terminal to send sidelink data to the second terminal.
  • the network device can obtain information such as the carriers supported by the second terminal that establishes a unicast connection with the first terminal, the preferred supported carriers, and the carriers that are rejected for carrier aggregation, thereby facilitating the network device to know the capabilities of the second terminal, whether the second terminal agrees to use the first carrier for unicast communication, and other information.
  • the method further includes:
  • the network device can determine or redetermine the carrier used for carrier aggregation based on the carrier supported by the second terminal that establishes a unicast connection with the first terminal, the preferred supported carrier, the information of the carrier that is rejected for carrier aggregation, etc., and notify the first terminal, thereby saving terminal resources, reducing the carriers monitored by the second terminal, and saving power.
  • the supported second carrier includes a carrier that supports sending and/or supports receiving
  • the preferred supported third carrier includes a carrier that preferably supports sending and/or preferably supports receiving.
  • the network device can learn the carriers supported for sending and/or receiving and the carriers preferred for sending and/or receiving by the second terminal, thereby learning the capability information of the second terminal.
  • an embodiment of the present disclosure provides a method for determining a carrier, including:
  • a first terminal determines a first carrier for carrier aggregation; sends first indication information to a second terminal, where the first indication information is used to indicate the first carrier, and the second terminal is a terminal that establishes a unicast connection with the first terminal; and sends sidelink data to the second terminal through the first carrier.
  • the second terminal receives the first indication information sent by the first terminal and receives the sidelink data sent by the first terminal through the first carrier.
  • the first terminal can determine the first carrier used for carrier aggregation, and notify the first terminal of the first carrier to the second terminal that has a unicast connection with the first terminal.
  • the transmitting terminal can determine the carrier used for carrier aggregation used by the transmitting terminal and the receiving terminal for unicast communication, and notify the receiving terminal, and then send the sidelink data to the receiving terminal through the carrier used for carrier aggregation, so that the receiving terminal can receive the sidelink data through the carrier used for carrier aggregation, which can reduce the carrier monitored by the receiving terminal and save power.
  • an embodiment of the present disclosure proposes a first terminal, which includes at least one of a transceiver module and a processing module: wherein the first terminal is used to execute the first aspect and the optional implementation method of the first aspect.
  • an embodiment of the present disclosure proposes a second terminal, and the second terminal includes at least one of a transceiver module and a processing module: wherein the second terminal is used to execute the second aspect and the optional implementation method of the second aspect.
  • an embodiment of the present disclosure proposes a network device, which includes at least one of a transceiver module and a processing module: wherein the network device is used to execute the third aspect and the optional implementation method of the third aspect.
  • an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; wherein the communication device is used to execute the first aspect and the optional implementation method of the first aspect.
  • an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; wherein the communication device is used to execute the second aspect and the optional implementation method of the second aspect.
  • an embodiment of the present disclosure provides a communication device, wherein the communication device includes:
  • processors one or more processors
  • the communication device is used to execute the third aspect and the optional implementation method of the third aspect.
  • an embodiment of the present disclosure proposes a communication system, including a first terminal, a second terminal, and a network device, wherein the first terminal is configured to implement the method described in the first aspect and the optional implementation method of the first aspect, the second terminal is configured to implement the method described in the second aspect, and the network device is configured to implement the method described in the third aspect and the optional implementation method of the third aspect.
  • an embodiment of the present disclosure proposes a storage medium, which stores instructions.
  • the communication device executes the method described in the first aspect, the optional implementation of the first aspect, the second aspect, the optional implementation of the second aspect, the third aspect, and the optional implementation of the third aspect.
  • an embodiment of the present disclosure proposes a program product.
  • the communication device executes the method described in the first aspect, the optional implementation of the first aspect, the second aspect, the optional implementation of the second aspect, the third aspect, and the optional implementation of the third aspect.
  • an embodiment of the present disclosure proposes a computer program, which, when running on a computer, enables the computer to execute the method described in the first aspect, the optional implementation of the first aspect, the second aspect, the optional implementation of the second aspect, the third aspect, and the optional implementation of the third aspect.
  • an embodiment of the present disclosure provides a chip or a chip system.
  • the chip or chip system includes a processing circuit configured to execute the method described in the first aspect, the optional implementation of the first aspect, the second aspect, the optional implementation of the second aspect, the third aspect, and the optional implementation of the third aspect.
  • the embodiments of the present disclosure provide a method for determining a carrier, a first terminal, a second terminal, and a network device.
  • the method for determining a carrier can be replaced with terms such as an information processing method and a communication method
  • the information transmission device can be replaced with terms such as an information processing device and a communication device
  • the information processing system and a communication system can be replaced with terms such as an information processing system.
  • 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 of the 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”, “the aforementioned”, “this”, etc. can mean “one and only one", or “one or more”, “at least one”, etc.
  • the noun after the article can 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.
  • 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.
  • devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments.
  • Terms such as “device”, “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.
  • terminal In some embodiments, the terms "terminal”, “terminal device”, “user equipment (UE)”, “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 and the like can be used interchangeably.
  • the access network device, the core network device, or the network device can be replaced by a terminal.
  • the various embodiments of the present disclosure can also be applied to a structure in which the access network device, the core network device, or the network device and the communication between the terminals is replaced by the communication between multiple terminals (for example, it can also be referred to as device-to-device (D2D), vehicle-to-everything (V2X), etc.).
  • D2D device-to-device
  • V2X vehicle-to-everything
  • the language such as "uplink” and "downlink” can also be replaced by the language corresponding to the communication between the terminals (for example, "side”).
  • the uplink channel, the downlink channel, etc. can be replaced by the side channel
  • the uplink, the downlink, etc. can be replaced by the side link.
  • the terminal may be replaced by an access network device, a core network device, or a network device.
  • the access network device, the core network device, or the network device may also be configured to have a structure that has all or part of the functions of the 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.
  • FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • the communication system 100 may include a first terminal 101, a second terminal 102, and a network device 103.
  • a communication connection may be established between the first terminal 101 and the second terminal 102, and SL communication may be performed between the first terminal 101 and the second terminal 102.
  • the network device 103 may include at least one of an access network device and a core network device.
  • the first terminal 101 or the second terminal 102 includes, for example, a mobile phone, a wearable device, an IoT device, a car with a communication function, a smart car, a tablet computer, a computer with a wireless transceiver function, a virtual reality device, or a computer.
  • the invention relates to at least one of wireless terminal devices in the fields of artificial intelligence (AI), artificial intelligence (AI), and artificial intelligence (AI).
  • the invention relates to wireless terminal devices in the fields of artificial intelligence (AI), artificial intelligence (AI), and artificial intelligence (AI).
  • the invention relates to wireless terminal devices in the fields of artificial intelligence (AI), artificial intelligence (AI), and artificial intelligence (AI).
  • the invention relates to wireless terminal devices in the fields of artificial intelligence (AI), artificial intelligence (AI), and artificial intelligence (AI).
  • the invention relates to wireless terminal devices in the fields of artificial intelligence (AI), artificial intelligence (AI), and artificial intelligence (AI).
  • the technical solution of the present disclosure may be applicable to the Open RAN architecture.
  • the interfaces between access network devices or within access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.
  • the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit).
  • the CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this.
  • the core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of one or more network elements.
  • the network element may be virtual or physical.
  • the core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • 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 connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, which 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
  • the SL communication mode is introduced.
  • the interface between the terminals can be PC-5 (direct communication interface).
  • three transmission modes are supported on the SL: unicast, multicast and broadcast.
  • the network dynamically schedules transmission resources there are two ways of allocating transmission resources for SL communication, one is a way in which the network dynamically schedules transmission resources, and the other is a way in which the terminal autonomously selects transmission resources from a network-configured or pre-configured resource pool.
  • the way in which the network schedules transmission resources is that the network device dynamically allocates transmission resources on the SL to the terminal based on the cached data reported by the terminal, and the way in which the transmission resources are autonomously selected is that the terminal randomly selects transmission resources from a network-configured or pre-configured resource pool.
  • the specific resource allocation method used by the terminal can be configured by the network device through RRC signaling.
  • the name of the method for network scheduling to send resources is not limited.
  • the method for network scheduling to send resources may be mode 1 or mode1.
  • the name of the method for autonomously selecting sending resources is not limited.
  • the method for autonomously selecting sending resources may be mode 2 or mode2.
  • the transmitting terminal sends sidelink control information (SCI) on a physical sidelink control channel (PSCCH) and sends a second-stage SCI on a physical sidelink shared channel (PSSCH), which carries the resource location of the transmitted data and source and destination identifiers, etc.
  • SCI sidelink control information
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the receiving terminal For the data packet, the receiving terminal performs HARQ confirmation (HARQ-ACK) feedback on the PSSCH on the physical sidelink feedback channel (PSFCH).
  • HARQ-ACK HARQ confirmation
  • CA component carriers
  • the receiving terminal may only be able to receive sidelink services on one or several carriers, and due to limited sending capability, the transmitting terminal may only be able to send sidelink services on one or several carriers.
  • a higher layer implementation may be relied upon to determine which service is of interest and receive data only on the carrier associated with the service of interest.
  • the new radio (NR) SL supports sidelink CA.
  • the limited terminal capabilities may not be considered, and the terminals supporting carrier aggregation support transceiving on all carriers by default.
  • the limited terminal capabilities may be considered.
  • the present disclosure proposes a method for determining a carrier.
  • the method of the present disclosure can be applied to SL CA scenarios.
  • the method of the present disclosure can be applied to Internet of Vehicles scenarios.
  • Step S2101 The second terminal 102 sends second indication information and/or third indication information to the first terminal 101.
  • the terminal that establishes a unicast connection with the first terminal 101 may be one or more terminals, and the second terminal 102 may be one of them. That is, the second terminal 102 may be any terminal that establishes a unicast connection with the first terminal 101.
  • the resource allocation method of the first terminal 101 can independently select the method of sending resources.
  • the first terminal 101 may be a terminal in any of the following states: RRC connected state, RRC idle state, RRC sleep state, or out of coverage (OOC) state.
  • RRC connected state RRC connected state
  • RRC idle state RRC idle state
  • RRC sleep state RRC sleep state
  • OOC out of coverage
  • the second indication information may be used to indicate a second carrier supported by the second terminal 102
  • the third indication information may be used to indicate a third carrier that the second terminal 102 preferably supports.
  • carrier In some embodiments, “carrier”, “frequency band”, “spectrum” and “frequency” may be used interchangeably.
  • the name of the second indication information is not limited, and it may be, for example, “first information”, “first capability information”, etc.
  • the name of the third indication information is not limited, and it may be, for example, “second information”, “second capability information”, etc.
  • the second carrier supported by the second terminal 102 may include a carrier supported for sending and/or supported for receiving by the second terminal 102.
  • the carrier supported for sending by the second terminal 102 may refer to a carrier that the second terminal 102 can use to send sidelink data
  • the carrier supported for receiving by the second terminal 102 may refer to a carrier that the second terminal 102 can use to receive sidelink data.
  • the third carrier that the second terminal 102 prefers to support may include a carrier that the second terminal 102 prefers to support sending and/or preferably supports receiving.
  • the third carrier that the second terminal 102 prefers to support may be a carrier that the second terminal 102 recommends to use among the supported third carriers.
  • the third carrier that the second terminal 102 prefers to support may be a partially preferred carrier selected by the second terminal 102 on the supported second carrier.
  • the carrier that the second terminal 102 prefers to support sending may refer to a carrier that the second terminal 102 may prefer to use for sending sidelink data
  • the carrier that the second terminal 102 prefers to support receiving may refer to a carrier that the second terminal 102 may prefer to use for receiving sidelink data.
  • the preferred may refer to a carrier that the second terminal 102 expects to use for sending or receiving information. That is, the second terminal 102 may recommend its desired single carrier to the first terminal 101, or may recommend one or more of its desired multiple carriers to the first terminal 101, so that the first terminal 101 determines the carrier that can be aggregated based on the carrier that the second terminal 102 expects to use.
  • the second terminal 102 may inform the network device 103 through the first terminal 101 of the carrier that the second terminal 102 expects to use, so that the network device 103 determines the carrier that can be aggregated based on the carrier that the second terminal 102 expects to use.
  • the support described in the present disclosure may refer to support for sending sidelink data, or support for receiving sidelink data, or support for sending and receiving sidelink data.
  • the supporting sending and/or supporting receiving described in the present disclosure may refer to supporting sending and/or supporting receiving sidelink data.
  • the supporting sending described in the present disclosure may refer to supporting sending side link data
  • supporting receiving may refer to supporting receiving side link data
  • the second terminal 102 may send the second indication information and/or the third indication information to the first terminal 101 via PC5-RRC signaling.
  • the PC5-RRC signaling may be UECapabilityInformationSidelink signaling or UEAssistanceInformationSidelink or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the second terminal 102 may send the second indication information and/or the third indication information to the first terminal 101 via other PC5 signaling, such as PC5 MAC CE. The present disclosure does not specifically limit this.
  • the second indication information and/or the third indication information may be carried by the same PC5-RRC signaling or by different PC5-RRC signaling.
  • the second indication information may include a carrier identification list, which may include carrier information of carriers supported for transmission by the second terminal 102 and/or carrier information of carriers supported for reception.
  • the one carrier identification list may include carrier information of carriers supported for transmission by the second terminal 102;
  • the one carrier identification list may include carrier information of carriers supported for reception by the second terminal 102;
  • the one carrier identification list may include carrier information of carriers supported for transmission by the second terminal 102 and carrier information of carriers supported for reception by the second terminal 102;
  • the second indication information may include two carrier identification lists, one list including carrier information of carriers supported for transmission by the second terminal 102 and carrier information of carriers supported for reception by the second terminal 102.
  • the other list contains carrier information of carriers supported for transmission, and the other list contains carrier information of carriers supported for reception by the second terminal 102 .
  • the third indication information may include a carrier identification list, which may include carrier information of carriers that the second terminal 102 preferentially supports for sending and/or carrier information of carriers that the second terminal 102 preferentially supports for receiving.
  • the one carrier identification list may include carrier information of carriers that the second terminal 102 preferentially supports for sending;
  • the one carrier identification list may include carrier information of carriers that the second terminal 102 preferentially supports for receiving;
  • the one carrier identification list may include carrier information of carriers that the second terminal 102 preferentially supports for sending and carriers that the second terminal 102 preferentially supports for receiving;
  • the third indication information may include two carrier identification lists, one list including carrier information of carriers that the second terminal 102 preferentially supports for sending, and the other list including carrier information of carriers that the second terminal 102 preferentially supports for receiving.
  • the second terminal 102 may actively send the second indication information and/or the third indication information to the first terminal 101 .
  • the second terminal 102 can send the second indication information and/or the third indication information to the first terminal 101.
  • the second terminal 102 can send the second indication information and/or the third indication information to the first terminal 101 (the second indication information and/or the third indication information is sent for the first time after the unicast connection is established).
  • the second terminal 102 when the second indication information changes compared to the previous second indication information (for example, the second carrier changes compared to the previous second carrier), the second terminal 102 sends the second indication information to the first terminal 101.
  • the previous second indication information may refer to the second indication information last sent to the first terminal 101.
  • the second terminal 102 can promptly notify the first terminal 101 of the latest second carrier.
  • the second terminal 102 when the third indication information changes compared to the previous third indication information (for example, the third carrier changes compared to the previous third carrier), the second terminal 102 sends the third indication information to the first terminal 101.
  • the previous third indication information may refer to the third indication information last sent to the first terminal 101.
  • the second terminal 102 can promptly notify the first terminal 101 of the latest third carrier.
  • the first terminal 101 may send a request message to the second terminal 102 to request to obtain the second indication information and/or the third indication information. After receiving the request message, the second terminal 102 sends the second indication information and/or the third indication information to the first terminal 101.
  • the first terminal 101 may send the request information to the second terminal 102 via PC5-RRC signaling.
  • the PC5-RRC signaling may be UECapabilityEnquirySidelink signaling or a newly defined PC5-RRC signaling, which is not limited in the present disclosure.
  • the first terminal 101 may send the request information to the second terminal 102 via other PC5 signaling, such as PC5MAC CE. The present disclosure does not specifically limit this.
  • the request information may include carrier information of the carrier supported by the first terminal 101
  • the second terminal 102 may determine the second indication information and/or the third indication information based on the carrier supported by the first terminal 101 and the carrier supported by the second terminal 102 .
  • the request information may include carrier information of a fourth carrier supported by the first terminal 101.
  • the fourth carrier supported by the first terminal 101 includes a carrier supported for reception and/or transmission by the first terminal 101.
  • the carrier supported for transmission by the first terminal 101 may refer to a carrier that the first terminal 101 may use to transmit sidelink data
  • the carrier supported for reception by the first terminal 101 may refer to a carrier that the first terminal 101 may use to receive sidelink data.
  • the request information may include carrier information of the fifth carrier that the first terminal 101 preferably supports.
  • the fifth carrier that the first terminal 101 preferably supports may include a carrier that the first terminal 101 prefers to support sending and/or preferably supports receiving.
  • the carrier that the first terminal 101 prefers to support may be a portion of the preferred carriers selected by the first terminal 101 on the supported carriers.
  • the carrier that the first terminal 101 prefers to support sending may refer to a carrier that the first terminal 101 prefers to use for sending sidelink data.
  • the carrier that the first terminal 101 prefers to support receiving may refer to a carrier that the first terminal 101 prefers to use for receiving sidelink data.
  • the second terminal 102 may determine the second indication information and/or the third indication information based on one or more of a fourth carrier supported by the first terminal 101, a fifth carrier preferentially supported by the first terminal 101, and a carrier supported for reception by the second terminal 102.
  • the request information may include a carrier identification list, which may include carrier information of carriers supported for transmission and/or carrier information of carriers supported for reception by the first terminal 101.
  • the one carrier identification list may include carrier information of carriers supported for transmission by the first terminal 101;
  • the one carrier identification list may include carrier information of carriers supported for reception by the first terminal 101;
  • the one carrier identification list may include carrier information of carriers supported for transmission and carriers supported for reception by the first terminal 101;
  • the request information may include two carrier identification lists, one list including carrier information of carriers supported for transmission by the first terminal 101, and the other list including carrier information of carriers supported for reception by the first terminal 101.
  • the first terminal 101 may send request information to the second terminal 102 when the resource allocation mode changes.
  • the request information is sent to the second terminal 102.
  • the request information is sent to the second terminal 102.
  • the first terminal 101 may send request information to the second terminal 102 after establishing a unicast connection with the second terminal 102.
  • the first terminal 101 may send request information to the second terminal 102 after establishing a unicast connection with the second terminal 102 based on implementation.
  • the first terminal 101 may receive one or more of the second indication information and the third indication information sent by the second terminal 102 .
  • “receive”, “obtain”, “obtain”, “get”, “transmit”, “bidirectional transmission”, “send and/or receive” can be interchangeable, which can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.
  • the first terminal 101 can send one or more of the second indication information and the third indication information to the network device 103.
  • Step S2102 The first terminal 101 determines a first carrier for carrier aggregation.
  • the terms “certain”, “preset”, “preset”, “set”, “indicated”, “a certain”, “arbitrary”, “any”, “first”, etc. can be used interchangeably, and “certain A”, “preset A”, “set A”, “indicated A”, “a certain A”, “any A”, “any A”, “first A”, etc. can be interpreted as referring to the terms in protocols, etc.
  • the A pre-specified in the text can also be interpreted as an A obtained through setting, configuration, or instruction, or can be interpreted as a specific A, a certain A, an arbitrary A, any A or the first A, etc., but is not limited to this.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the second indication information.
  • the first carrier may be used by the first terminal 101 to send sidelink data to the second terminal 102.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the carrier supported by the second terminal 102 for receiving and the carrier supported by the first terminal 101 for sending.
  • the transmitting terminal supports the carriers A1, A2, A3, and A4 for transmission, and the receiving terminal supports the carriers A2, A3, and A4 for reception.
  • the transmitting terminal can determine the first carrier to be A2, A3, and A4.
  • the transmitting terminal supports the carriers A1, A2, A3, and A4 for transmission, and the receiving terminal supports the carriers A2, A3, and A4 for reception.
  • the transmitting terminal can determine the first carrier to be A2 and A3, or A2 and A4, or A3 and A4. In this way, the carriers monitored by the receiving terminal can be reduced, thereby achieving the effect of power saving.
  • the transmitting terminal supports the carriers A1, A2, A3, and A4 for transmission, and the receiving terminal preferentially supports the carriers A2 and A3 for reception.
  • the transmitting terminal may determine that the first carrier is A2 or A3.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the second indication information and the third indication information.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the second carrier supported for reception by the second terminal 102, the carrier that the second terminal 102 preferentially supports for reception, and the carrier that the first terminal 101 supports for transmission.
  • the transmitting terminal supports the carriers A1, A2, A3, and A4 for transmission
  • the receiving terminal supports the carriers A2, A3, and A4 for reception
  • the receiving terminal preferentially supports the carriers A2 and A3 for reception
  • the transmitting terminal can determine the first carrier to be A2, A3, and A4.
  • the transmitting terminal can determine the first carrier to be A2 and A3.
  • the first terminal 101 may release the unicast connection with the second terminal 102, or may use a single carrier to send sidelink data to the second terminal 102.
  • the unicast connection is a PC5-RRC connection.
  • the first terminal 101 if the first terminal 101 does not support sending sidelink data on the carrier that the second terminal 102 preferably supports receiving, exemplarily, the second terminal 102 supports receiving sidelink data on multiple preferred carriers, the multiple preferred carriers include legacy carriers that the R16/17 terminal supports sending and/or supports receiving, and also include other preferred carriers, the first terminal 101 only supports sending sidelink data on the legacy carrier supported by the R16/17 terminal, and does not support sending sidelink data on other preferred carriers that the second terminal 102 supports receiving, the first terminal 101 can release the unicast connection between the first terminal 101 and the second terminal 102, or can use a single carrier to send sidelink data to the second terminal 102.
  • the unicast connection is a PC5-RRC connection.
  • the single carrier is a carrier supported by an R16/17 terminal for sending and/or receiving, also referred to as a legacy carrier.
  • Step S2103 The first terminal 101 sends first indication information to the second terminal 102.
  • the first indication information may be used to indicate the first carrier.
  • the name of the first indication information is not limited, and it may be, for example, “third information”, “notification information”, etc.
  • the first terminal 101 may send the first indication information to the second terminal 102 via PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 can send the first indication information to the second terminal 102 through other PC5 signaling, and other PC5 signaling, such as PC5 media access control element (MAC CE), is not specifically limited in the present disclosure.
  • PC5 signaling such as PC5 media access control element (MAC CE)
  • the second terminal 102 may receive the first indication information sent by the first terminal 101 .
  • the second terminal 102 may determine whether the first indication information is acceptable, and if not, may send fourth indication information to the first terminal 101, and the first terminal 101 receives the fourth indication information sent by the second terminal 102.
  • the fourth indication information may be used to instruct the second terminal 102 to reject the first indication information.
  • the first carrier indicated by the first indication information is carrier a and carrier b
  • the carriers supported by the second terminal 102 for reception are carrier a and carrier b
  • the second terminal 102 does not support simultaneous reception of data on carrier a and carrier b due to limited capabilities, so the second terminal 102 can reject the first indication information.
  • the first carrier indicated by the first indication information is not the carrier that the second terminal 102 first supports, so the second terminal 102 can reject the first indication information.
  • the fourth indication information may be carried by PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationCompleteSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the second terminal 102 can send the fourth indication information to the first terminal 101 through other PC5 signaling, and other PC5 signaling, such as PC5 MAC CE, is not specifically limited in the present disclosure.
  • the first terminal 101 may re-determine the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • the first terminal 101 may re-determine the first carrier according to one or more of the second indication information, the third indication information, the fourth indication information, and/or the carriers supported by the first terminal 101.
  • the first terminal 101 can redetermine the first carrier based on the carrier supported by the second terminal 102 for reception, the carrier preferred to be supported for reception by the second terminal 102, one or more of the fourth indication information, and/or the carrier supported by the first terminal 101 for sending, and notify the second terminal 102 of the redetermined first carrier.
  • the first terminal 101 can notify the second terminal 102 of the first carrier redetermined by the first terminal 102 via the first indication information.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information to the network device 103.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information to the network device 103.
  • the second terminal 102 receives the first indication information, and the first terminal 101 may send sidelink data to the second terminal 102 via the first carrier.
  • the second terminal 102 may receive the sidelink data sent by the first terminal 101 via the first carrier.
  • the scheme for determining the first carrier by the transmitting terminal involved in the embodiment of the present disclosure is applicable to a terminal operating in mode 2.
  • the transmitting terminal may be in an RRC connected state, an RRC IDLE (idle) state, an RRC INACTIVE (sleeping) state, or an OOC state.
  • the scheme for determining the first carrier by the transmitting terminal involved in the embodiment of the present disclosure is applicable to a terminal operating in mode 2.
  • the transmitting terminal is in the RRCIDLE state, the RRCINACTIVE state, or the OOC state.
  • the scheme for determining the first carrier by the transmitting terminal involved in the embodiment of the present disclosure is applicable to a terminal operating in mode 1.
  • the transmitting terminal may be in an RRC connected state.
  • the method for determining a carrier involved in the embodiment of the present disclosure is determined according to the granularity of the sidelink data transmission direction.
  • A is a transmitting terminal, and terminal A determines a first carrier for carrier aggregation, and the first carrier is used for terminal A to send unicast data to terminal B.
  • B is a transmitting terminal, and terminal B determines a first carrier, and the first carrier is used for terminal B to send unicast data to terminal A.
  • a source address may be replaced with a source layer 2 address
  • a target address may be replaced with a target layer 2 address
  • a source address target address pair may be replaced with a source layer 2 address target layer 2 address pair.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2103.
  • step S2101 may be implemented as an independent embodiment
  • step S2102 may be implemented as an independent embodiment
  • step S2103 may be implemented as an independent embodiment
  • step S2101 and step S2102 may be implemented as independent embodiments
  • step S2102 and step S2103 may be implemented as independent embodiments, but are not limited thereto.
  • step S2101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementation modes or other examples.
  • FIG2B is an interactive schematic diagram of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG2B , an embodiment of the present disclosure relates to a method for determining a carrier, which is used in a communication system 100, and the method includes:
  • Step S2201 The second terminal 102 sends second indication information and/or third indication information to the first terminal 101.
  • step S2201 can refer to the optional implementation of step S2101 in FIG. 2A and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.
  • Step S2202 The first terminal 101 sends second indication information and/or third indication information to the network device 103.
  • the first terminal 101 may send the second indication information and/or the third indication information to the network device 103. That is, if the first terminal 101 is in an RRC connection state and the resource allocation mode of the first terminal 101 is a mode of autonomously selecting sending resources, the first terminal 101 may send the second indication information and/or the third indication information sent by the second terminal 102 to the network device 103.
  • the first terminal 101 may send the second indication information to the network device 103.
  • the previous second indication information may refer to the second indication information sent to the network device 103 last time.
  • the first terminal 101 may actively obtain the second indication information to determine whether the second indication information has changed. For example, the first terminal 101 may periodically obtain the second indication information to compare the second indication information currently obtained with the second indication information obtained last time. Alternatively, the first terminal 101 may obtain the second indication information and inform the network device 103 only when the second indication information changes. If the first terminal 101 does not obtain new second indication information, the first terminal 101 considers that the second indication information has not changed. Exemplarily, when the carrier supported by the second terminal 102 in unicast communication with the first terminal 101 changes, the second terminal 102 sends the second indication information to the first terminal 101 to inform it of the currently supported carrier.
  • the first terminal 101 when the second indication information changes, the first terminal 101 notifies the network device 103 of the changed second indication information.
  • the second indication information may send the changed new second indication information to the network device 103, or may only send the change amount of the second indication information to the network device 103.
  • the first terminal 101 may send a second indication signal to the network device 103 to indicate the carriers a and c supported by the second terminal 102, or may send the second indication information to the network device 103 to indicate that the second terminal 102 no longer supports carrier b, and the second terminal 102 supports carrier c.
  • the first terminal 101 may send the third indication information to the network device 103.
  • the previous third indication information may refer to the third indication information sent to the network device 103 last time.
  • the first terminal 101 may actively obtain the third indication information to determine whether the third indication information has changed. For example, the first terminal 101 may periodically obtain the third indication information to compare the third indication information currently obtained with the third indication information obtained last time. Alternatively, the first terminal 101 may obtain the third indication information and inform the network device 103 only when the third indication information changes. If the first terminal 101 does not obtain new third indication information, the first terminal 101 considers that the third indication information has not changed. In the case of the third indication information, when the carrier preferred by the second terminal 102 changes, the second terminal 102 sends the third indication information to the first terminal 101 to inform it of the currently preferred supported carrier.
  • the first terminal 101 may send one or more of the second indication information and the third indication information to the network device 103 through Uu RRC signaling.
  • the Uu RRC signaling may be sidelink UE Information (SUI) or UE assistance information (UAI) or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the network device 103 may receive the second indication information and/or the third indication information sent by the first terminal 101 .
  • Step S2203 The network device 103 determines a first carrier for carrier aggregation.
  • the network device 103 may determine the first carrier according to one or more of the second indication information and the third indication information.
  • the network device 103 may determine the first carrier based on one or more of the second carrier and the third carrier and the carrier supported by the first terminal 101 .
  • the network device 103 may determine the first carrier based on one or more of the carriers supported for reception by the second terminal 102 , the carriers preferred to be supported for reception by the second terminal 102 , and/or the carriers supported for transmission by the first terminal 101 .
  • the first terminal 101 may release the unicast connection with the second terminal 102, or may use a single carrier to send sidelink data to the second terminal 102.
  • the unicast connection is a PC5-RRC connection.
  • the first terminal 101 if the first terminal 101 does not support sending sidelink data on the carrier that the second terminal 102 preferably supports receiving, exemplarily, the second terminal 102 supports receiving sidelink data on multiple preferred carriers, the multiple preferred carriers include legacy carriers that the R16/17 terminal supports sending and/or supports receiving, and also include other preferred carriers, the first terminal 101 only supports sending sidelink data on the legacy carrier supported by the R16/17 terminal, and does not support sending sidelink data on other preferred carriers that the second terminal 102 supports receiving, the first terminal 101 can release the unicast connection between the first terminal 101 and the second terminal 102, or can use a single carrier to send sidelink data to the second terminal 102.
  • the unicast connection is a PC5-RRC connection.
  • the single carrier is a carrier supported by an R16/17 terminal for sending and/or receiving, also referred to as a legacy carrier.
  • Step S2204 the network device 103 sends fifth indication information to the first terminal 101.
  • the first terminal 101 may receive the fifth indication information sent by the network device 103, and determine the first carrier for carrier aggregation according to the fifth indication information.
  • the fifth indication information may be used to indicate the first carrier determined by the network device 103, and the first carrier may be used by the first terminal 101 to send sidelink data to the second terminal 102.
  • the network device 103 may send the fifth indication information to the first terminal 101 through Uu RRC signaling.
  • the Uu RRC signaling may be RRCReconfiguration signaling or a newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • Step S2205 The first terminal 101 sends first indication information to the second terminal 102.
  • the first indication information may be used to indicate the first carrier.
  • the first terminal 101 after receiving the fifth indication information, the first terminal 101 sends the first indication information to the second terminal 102 .
  • the first terminal 101 may determine the first carrier according to the fifth indication information, and send the first indication information to the second terminal 102 .
  • the second terminal 102 may receive the first indication information sent by the first terminal 101 .
  • the second terminal 102 may determine whether the first indication information is acceptable, and if not, may send fourth indication information to the first terminal 101, and the first terminal 101 receives the fourth indication information sent by the second terminal 102.
  • the fourth indication information may be used to instruct the second terminal 102 to reject the first indication information.
  • the first carrier indicated by the first indication information is carrier a and carrier b
  • the carriers supported by the second terminal 102 for reception are carrier a and carrier b
  • the second terminal 102 does not support simultaneous reception of data on carrier a and carrier b due to limited capabilities, so the second terminal 102 can reject the first indication information.
  • the first carrier indicated by the first indication information is not the carrier that the second terminal 102 first supports, so the second terminal 102 can reject the first indication information.
  • the fourth indication information may be carried by PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationCompleteSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the second terminal 102 may send the fourth indication information to the first terminal 101 through other PC5 signaling, and the other PC5 signaling is such as PC5 MAC CE, which is not specifically limited in the present disclosure.
  • the first terminal 101 may send the fourth indication information to the network device 103, and the network device 103 receives the fourth indication information and re-determines the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • the first terminal 101 sends the fourth indication information to the network device 103 through Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information received from the second terminal 102 to the network device 103 through Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the network device 103 may re-determine the first carrier based on one or more of the second indication information, the third indication information, the fourth indication information, and/or the carrier supported by the first terminal 101.
  • the network device 103 may re-determine the first carrier according to the carrier supported by the second terminal 102 for reception, the carrier preferred by the second terminal 102 for reception, one or more of the fourth indication information, and/or the carrier supported by the first terminal 101 for transmission, and notify the first terminal 101 of the re-determined first carrier, and the first terminal 101 then notifies the second terminal 102.
  • the first carrier re-determined by the network device 103 may be notified to the first terminal 101 through the fifth indication information, and exemplary, the first terminal 101 receives the fifth indication information sent by the network device 103 and then notifies the second terminal 102, and exemplary, the first terminal 101 may notify the second terminal 102 through the first indication information.
  • the second terminal 102 receives the first indication information, and the first terminal 101 may send sidelink data to the second terminal 102 via the first carrier.
  • the second terminal 102 may receive the sidelink data sent by the first terminal 101 via the first carrier.
  • the scheme for determining the first carrier by a network device involved in the embodiment of the present disclosure may be applicable to a terminal that is in an RRC connected state and operates in mode 2.
  • the method for determining the carrier involved in the embodiment of the present disclosure is determined according to the granularity of the sidelink data transmission direction. For example, for a source address and target address pair (A, B), A is the transmitting terminal, and the network device determines the first carrier for carrier aggregation and notifies the terminal. Terminal A, the first carrier is used by terminal A to send unicast data to terminal B. Exemplarily, for a source address and target address pair (B, A), B is a sending terminal, and the network device determines the first carrier and notifies terminal B, and the first carrier is used by terminal B to send unicast data to terminal A.
  • a source address may be replaced with a source layer 2 address
  • a target address may be replaced with a target layer 2 address
  • a source address target address pair may be replaced with a source layer 2 address target layer 2 address pair.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S2201 to S2105.
  • step S2101 may be implemented as an independent embodiment
  • step S2102 may be implemented as an independent embodiment
  • step S2103 may be implemented as an independent embodiment
  • step S2104 may be implemented as an independent embodiment
  • step S2105 may be implemented as an independent embodiment
  • step S2101 and step S2102 may be implemented as independent embodiments
  • step S2103 and step S2104 may be implemented as independent embodiments
  • step S2103, step S2104 and step 205 may be implemented as independent embodiments, but are not limited thereto.
  • step S2101 and step S2102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other implementation modes or other examples.
  • FIG3A is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG3A , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a first terminal 101, and the method includes:
  • Step S3101 obtaining second indication information and/or third indication information.
  • 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.
  • the first terminal 101 receives the second indication information and/or the third indication information sent by the second terminal 102, but is not limited thereto, and may also receive the second indication information and/or the third indication information sent by other entities.
  • the first terminal 101 obtains the second indication information and/or the third indication information specified by the protocol.
  • the first terminal 101 obtains the second indication information and/or the third indication information from an upper layer(s).
  • Step S3102 determine a first carrier for carrier aggregation.
  • 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 3103 sending the first indication information.
  • step S3103 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.
  • the first terminal 101 may send the first indication information to the second terminal 102, but is not limited thereto, and the first indication information may also be sent to other entities.
  • step S3101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3103.
  • step S3101 may be implemented as an independent embodiment
  • step S3102 may be implemented as an independent embodiment
  • step S3102 may be implemented as an independent embodiment
  • step S3101 and step S3102 may be implemented as independent embodiments
  • step S3102 and step S3103 may be implemented as independent embodiments, but are not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG3B is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a method for determining a carrier, which is used for a first terminal 101, and the method includes:
  • Step S3201 receiving second indication information and/or third indication information sent by a second terminal.
  • step S3201 can refer to step S2101 in Figure 2A, the optional implementation of step S3101 in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.
  • Step S3202 determine a first carrier according to the second indication information and/or the third indication information.
  • step S3201 can refer to step S2101 in Figure 2A, the optional implementation of step S3101 in Figure 3A, and other related parts in the embodiments involved in Figures 2 and 3A, which will not be repeated here.
  • Step S3203 Send first indication information to the second terminal.
  • step S3203 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 S3204 Send sidelink data to the second terminal via the first carrier.
  • step S3204 can refer to the optional implementation of step S2103 in Figure 2A, step S3103 in Figure 3A, and other related parts in the embodiments involved in Figures 2A and 3A, which will not be repeated here.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S3201 to S3204.
  • 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
  • step S3203 may be implemented as an independent embodiment
  • step S3201, step S3202, and step S3203 may be implemented as independent embodiments
  • step S3202, step S3203, and step S3204 may be implemented as independent embodiments, but are not limited thereto.
  • step S3201 and step S3204 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG3C is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG3C , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a first terminal 101, and the method includes:
  • Step S3301 receiving second indication information and/or third indication information sent by a second terminal.
  • step S3301 can refer to step S2101 in Figure 2A, the optional implementation of step S3101 in Figure 3A, and other related parts in the embodiments involved in Figures 2A, 3A, and 3B, which will not be repeated here.
  • Step S3302 determine a first carrier according to the second indication information and/or the third indication information.
  • step S3302 can refer to the optional implementation of step S2102 in Figure 2A, step S3102 in Figure 3A, step S3102 in Figure 3B, and other related parts in the embodiments involved in Figures 2A, 3A, and 3B, which will not be repeated here.
  • Step S3303 Send first indication information to the second terminal.
  • step S3303 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 , FIG. 3A , and FIG. 3B , which will not be described in detail here.
  • Step 3304 Receive fourth indication information sent by the second terminal.
  • step S3304 can refer to step S2103 in Figure 2A, the optional implementation of step S3103 in Figure 3A, and other related parts in the embodiments involved in Figures 2A, 3A, and 3B, which will not be repeated here.
  • Step 3305 re-determine the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • step S3305 can refer to step S2103 of Figure 2A, the optional implementation of step S3103 of Figure 3A, and other related parts in the embodiments involved in Figures 2A, 3A, and 3B, which will not be repeated here.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S3301 to S3305.
  • step S3301 may be implemented as an independent embodiment
  • step S3302 may be implemented as an independent embodiment
  • step S3303 may be implemented as an independent embodiment
  • step S3303 may be implemented as an independent embodiment
  • step S3301 and step S3302 may be implemented as independent embodiments
  • step S3304 and step S3305 may be implemented as independent embodiments, but are not limited thereto.
  • step S3301 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG3D is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG3D , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a first terminal 101, and the method includes:
  • Step S3401 Obtain second indication information and/or third indication information.
  • step S3401 can refer to the optional implementation of step S2101 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • the first terminal 101 receives the second indication information and/or the third indication information sent by the second terminal 102, but is not limited thereto, and may also receive the second indication information and/or the third indication information sent by other entities.
  • the first terminal 101 obtains the second indication information and/or the third indication information specified by the protocol.
  • the first terminal 101 obtains the second indication information and/or the third indication information from a higher layer.
  • Step S3402 Send the second indication information and/or the third indication information.
  • step S3402 can refer to the optional implementation of step S2102 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.
  • the first terminal 101 may send the second indication information and/or the third indication information to the network device 103, but is not limited thereto, and may also send the second indication information and/or the third indication information to other entities.
  • the first terminal 101 is in an RRC connected state and the resource allocation method of the first terminal 101 is a method of autonomously selecting sending resources.
  • step S3403 can refer to the optional implementation of step S2104 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • the first terminal 101 receives the fifth indication information sent by the network device 103, but is not limited thereto, and may also receive the fifth indication information sent by other entities.
  • the first terminal 101 obtains fifth indication information specified by the protocol.
  • the first terminal 101 obtains the fifth indication information from a higher layer.
  • Step S3404 sending first indication information.
  • step S3404 can refer to the optional implementation of step S2105 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • the first terminal 101 may send the first indication information to the second terminal 102, but is not limited thereto, and may also send the first indication information to other entities.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S3401 to S3404.
  • step S3401 may be implemented as an independent embodiment
  • step S3402 may be implemented as an independent embodiment
  • step S3403 may be implemented as an independent embodiment
  • step S3404 may be implemented as an independent embodiment
  • step S3401 and step S3402 may be implemented as independent embodiments
  • step S3401, step S3402, and step S3403 may be implemented as independent embodiments but are not limited thereto.
  • step S3401 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG3E is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG3E , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a first terminal 101, and the method includes:
  • Step S3501 receiving second indication information and/or third indication information sent by a second terminal.
  • step S3501 can refer to the optional implementation of step S2101 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S3502 Send the second indication information and/or the third indication information to the network device.
  • step S3502 can refer to the optional implementation of step S2102 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • the first terminal 101 is in an RRC connected state and the resource allocation method of the first terminal 101 is a method of autonomously selecting sending resources.
  • Step S3503 Receive fifth indication information sent by the network device.
  • step S3503 can refer to the optional implementation of step S2104 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • Step S3504 determine the first carrier according to the fifth indication information.
  • step S3504 can refer to the optional implementation of step S2104 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • Step S3505 Send first indication information to the second terminal.
  • step S3505 can refer to the optional implementation of step S2105 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • Step S3506 Send sidelink data to the second terminal via the first carrier.
  • step S3506 can refer to the optional implementation of step S2105 in FIG. 2B and other related parts of the embodiment involved in FIG. 2B , which will not be described in detail here.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S3501 to S3506.
  • step S3501 may be implemented as an independent embodiment
  • step S3502 may be implemented as an independent embodiment
  • step S3503 may be implemented as an independent embodiment
  • step S3504 may be implemented as an independent embodiment
  • step S3505 may be implemented as an independent embodiment
  • step S3506 may be implemented as an independent embodiment
  • step S3503, step S3504 and step S3505 may be implemented as independent embodiments
  • step S3503, step S3504, step S3505 and step S3506 may be implemented as independent embodiments, but are not limited thereto.
  • step S3501, step S3502, step S3506, etc. are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG3F is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG3F , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a first terminal 101, and the method includes:
  • Step S3601 receiving second indication information and/or third indication information sent by a second terminal.
  • step S3601 can refer to the optional implementation of step S2101 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S3602 Send the second indication information and/or the third indication information to the network device.
  • step S3602 can refer to the optional implementation of step S2102 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • the first terminal 101 is in an RRC connected state and the resource allocation method of the first terminal 101 is a method of autonomously selecting sending resources.
  • Step S3603 Receive fifth indication information sent by the network device.
  • step S3603 can refer to the optional implementation of step S2104 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S3604 determine the first carrier according to the fifth indication information.
  • step S3604 can refer to the optional implementation of step S2104 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S3605 Send first indication information to the second terminal.
  • step S3605 can refer to the optional implementation of step S2105 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S3606 receiving fourth indication information sent by the second terminal.
  • step S3606 can refer to the optional implementation of step S2105 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S3607 Send fourth indication information to the network device.
  • step S3607 can refer to the optional implementation of step S2105 in Figure 2B and other related parts of the embodiment involved in Figure 2B, which will not be repeated here.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S3601 to S3607.
  • step S3601 may be implemented as an independent embodiment
  • step S3602 may be implemented as an independent embodiment
  • step S3603 may be implemented as an independent embodiment
  • step S3604 may be implemented as an independent embodiment
  • step S3605 may be implemented as an independent embodiment
  • step S3606 may be implemented as an independent embodiment
  • step S3607 may be implemented as an independent embodiment
  • steps S3503, S3504, S3505 and 3506 may be implemented as independent embodiments
  • steps S3505, S3506 and 3507 may be implemented as independent embodiments, but are not limited thereto.
  • step S3601, step S3602, and step S3607 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG3G is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG3G , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a first terminal 101, and the method includes:
  • Step S3701 determine a first carrier for carrier aggregation.
  • the second terminal 102 sends the second indication information and/or the third indication information to the first terminal 101.
  • the first terminal 101 may be a transmitting terminal
  • the second terminal 102 may be a receiving terminal.
  • the terminal that establishes a unicast connection with the first terminal 101 may be one or more terminals, and the second terminal 102 may be one of them. That is, the second terminal 102 may be any terminal that establishes a unicast connection with the first terminal 101.
  • the resource allocation method of the first terminal 101 can independently select the method of sending resources.
  • the first terminal 101 may be a terminal in any of the following states: RRC connected state, RRC idle state, RRC sleep state, or out of coverage (OOC) state.
  • RRC connected state RRC connected state
  • RRC idle state RRC idle state
  • RRC sleep state RRC sleep state
  • OOC out of coverage
  • the second indication information may be used to indicate a second carrier supported by the second terminal 102
  • the third indication information may be used to indicate a third carrier that the second terminal 102 preferably supports.
  • carrier In some embodiments, “carrier”, “frequency band”, “spectrum” and “frequency” may be used interchangeably.
  • the second carrier supported by the second terminal 102 may include a carrier supported for sending and/or supported for receiving by the second terminal 102.
  • the carrier supported for sending by the second terminal 102 may refer to a carrier that the second terminal 102 can use to send sidelink data
  • the carrier supported for receiving by the second terminal 102 may refer to a carrier that the second terminal 102 can use to receive sidelink data.
  • the third carrier that the second terminal 102 prefers to support may include a carrier that the second terminal 102 prefers to support sending and/or preferably supports receiving.
  • the third carrier that the second terminal 102 prefers to support may be a partially preferred carrier selected by the second terminal 102 on the supported second carrier.
  • the carrier that the second terminal 102 prefers to support sending may refer to a carrier that the second terminal 102 may prefer to use for sending sidelink data
  • the carrier that the second terminal 102 prefers to support receiving may refer to a carrier that the second terminal 102 may prefer to use for receiving sidelink data.
  • the preferred may refer to a carrier that the second terminal 102 expects to use for sending or receiving information.
  • the second terminal 102 may recommend its desired single carrier to the first terminal 101, or may recommend one or more of its desired multiple carriers to the first terminal 101, so that the first terminal 101 determines the carrier that can be aggregated based on the carrier that the second terminal 102 expects to use.
  • the second terminal 102 may inform the network device 103 through the first terminal 101 of the carrier that the second terminal 102 expects to use, so that the network device 103 determines the carrier that can be aggregated based on the carrier that the second terminal 102 expects to use.
  • the support described in the present disclosure may refer to support for sending sidelink data, or support for receiving sidelink data, or support for sending and receiving sidelink data.
  • the supporting sending and/or supporting receiving described in the present disclosure may refer to supporting sending and/or supporting receiving sidelink data.
  • the supporting sending described in the present disclosure may refer to supporting sending side link data
  • supporting receiving may refer to supporting receiving side link data
  • the second terminal 102 may send the second indication information and/or the third indication information to the first terminal 101 via PC5-RRC signaling.
  • the PC5-RRC signaling may be UECapabilityInformationSidelink signaling or UEAssistanceInformationSidelink or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the second terminal 102 may send the second indication information and/or the third indication information to the first terminal 101 via other PC5 signaling, such as PC5 MAC CE. The present disclosure does not specifically limit this.
  • the second indication information and/or the third indication information may be carried by the same PC5-RRC signaling or by different PC5-RRC signaling.
  • the second indication information may include a carrier identification list, which may include carrier information of carriers supported for transmission and/or carrier information of carriers supported for reception by the second terminal 102.
  • the one carrier identification list may include carrier information of carriers supported for transmission by the second terminal 102;
  • the one carrier identification list may include carrier information of carriers supported for reception by the second terminal 102;
  • the one carrier identification list may include carrier information of carriers supported for transmission and carriers supported for reception by the second terminal 102;
  • the second indication information may include two carrier identification lists, one list including carrier information of carriers supported for transmission by the second terminal 102, and the other list including carrier information of carriers supported for reception by the second terminal 102.
  • the third indication information may include a carrier identification list, which may include carrier information of carriers that the second terminal 102 preferentially supports for sending and/or carrier information of carriers that the second terminal 102 preferentially supports for receiving.
  • the one carrier identification list may include carrier information of carriers that the second terminal 102 preferentially supports for sending;
  • the one carrier identification list may include carrier information of carriers that the second terminal 102 preferentially supports for receiving;
  • the one carrier identification list may include carrier information of carriers that the second terminal 102 preferentially supports for sending and carriers that the second terminal 102 preferentially supports for receiving;
  • the third indication information may include two carrier identification lists, one list including carrier information of carriers that the second terminal 102 preferentially supports for sending, and the other list including carrier information of carriers that the second terminal 102 preferentially supports for receiving.
  • the second terminal 102 may actively send the second indication information and/or the third indication information to the first terminal 101 .
  • the second terminal 102 can send the second indication information and/or the third indication information to the first terminal 101.
  • the second terminal 102 can send the second indication information and/or the third indication information to the first terminal 101 (the second indication information and/or the third indication information is sent for the first time after the unicast connection is established).
  • the second indication information when the second indication information changes compared to the previous second indication information (for example, the second carrier changes compared to the previous second carrier), the second indication information is sent to the first terminal 101.
  • the previous second indication information may refer to the second indication information last sent to the first terminal 101.
  • the second terminal 102 can promptly notify the first terminal 101 of the latest second carrier.
  • the third indication information when the third indication information changes compared to the previous third indication information (for example, the third carrier changes compared to the previous third carrier), the third indication information is sent to the first terminal 101.
  • the previous third indication information may refer to the third indication information last sent to the first terminal 101.
  • the second terminal 102 can promptly notify the first terminal 101 of the latest third carrier.
  • the first terminal 101 may send a request message to the second terminal 102 to request to obtain the second indication information and/or the third indication information. After receiving the request message, the second terminal 102 sends the second indication information and/or the third indication information to the first terminal 101.
  • the first terminal 101 may send the request information to the second terminal 102 via PC5-RRC signaling.
  • the signaling may be UECapabilityEnquirySidelink signaling or newly defined PC5-RRC signaling, which is not limited in the present disclosure.
  • the first terminal 101 may send the request information to the second terminal 102 via other PC5 signaling, such as PC5MAC CE.
  • PC5MAC CE PC5MAC CE
  • the request information may include carrier information of the carrier supported by the first terminal 101
  • the second terminal 102 may determine the second indication information and/or the third indication information based on the carrier supported by the first terminal 101 and the carrier supported by the second terminal 102 .
  • the request information may include carrier information of a fourth carrier supported by the first terminal 101.
  • the fourth carrier supported by the first terminal 101 includes a carrier supported for reception and/or transmission by the first terminal 101.
  • the carrier supported for transmission by the first terminal 101 may refer to a carrier that the first terminal 101 may use to transmit sidelink data
  • the carrier supported for reception by the first terminal 101 may refer to a carrier that the first terminal 101 may use to receive sidelink data.
  • the request information may include carrier information of the fifth carrier that the first terminal 101 preferably supports.
  • the fifth carrier that the first terminal 101 preferably supports may include a carrier that the first terminal 101 prefers to support sending and/or preferably supports receiving.
  • the carrier that the first terminal 101 prefers to support may be a portion of the preferred carriers selected by the first terminal 101 on the supported carriers.
  • the carrier that the first terminal 101 prefers to support sending may refer to a carrier that the first terminal 101 prefers to use for sending sidelink data.
  • the carrier that the first terminal 101 prefers to support receiving may refer to a carrier that the first terminal 101 prefers to use for receiving sidelink data.
  • the second terminal 102 may determine the second indication information and/or the third indication information based on one or more of a fourth carrier supported by the first terminal 101, a fifth carrier preferentially supported by the first terminal 101, and a carrier supported for reception by the second terminal 102.
  • the request information may include a carrier identification list, which may include carrier information of carriers supported for transmission and/or carrier information of carriers supported for reception by the first terminal 101.
  • the one carrier identification list may include carrier information of carriers supported for transmission by the first terminal 101;
  • the one carrier identification list may include carrier information of carriers supported for reception by the first terminal 101;
  • the one carrier identification list may include carrier information of carriers supported for transmission and carriers supported for reception by the first terminal 101;
  • the request information may include two carrier identification lists, one list including carrier information of carriers supported for transmission by the first terminal 101, and the other list including carrier information of carriers supported for reception by the first terminal 101.
  • the first terminal 101 may send request information to the second terminal 102 when the resource allocation mode changes.
  • the second terminal 102 sends the request information.
  • the request information is sent to the second terminal 102.
  • the first terminal 101 may send request information to the second terminal 102 after establishing a unicast connection with the second terminal 102.
  • the first terminal 101 may send request information to the second terminal 102 after establishing a unicast connection with the second terminal 102 based on implementation.
  • the first terminal 101 may receive one or more of the second indication information and the third indication information sent by the second terminal 102 .
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the second indication information.
  • the first carrier may be used by the first terminal 101 to send sidelink data to the second terminal 102.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the carrier supported by the second terminal 102 for receiving and the carrier supported by the first terminal 101 for sending.
  • the transmitting terminal supports the carriers A1, A2, A3, and A4 for transmission, and the receiving terminal supports the carriers A2, A3, and A4 for reception.
  • the transmitting terminal can determine the first carrier to be A2, A3, and A4.
  • the transmitting terminal supports the carriers A1, A2, A3, and A4 for transmission, and the receiving terminal supports the carriers A2, A3, and A4 for reception.
  • the transmitting terminal can determine the first carrier to be, or A2 and A4, or A3 and A4. In this way, the carriers monitored by the receiving terminal can be reduced, thereby achieving the effect of power saving.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the third indication information.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the third carrier that the second terminal 102 preferentially supports receiving and the carrier that the first terminal 101 supports sending.
  • the transmitting terminal supports the carriers A1, A2, A3, and A4 for transmission, and the receiving terminal preferentially supports the carriers A2 and A3 for reception.
  • the transmitting terminal may determine that the first carrier is A2 or A3.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the second indication information and the third indication information.
  • the first terminal 101 may determine the first carrier for carrier aggregation according to the second carrier supported for reception by the second terminal 102, the carrier that the second terminal 102 preferentially supports for reception, and the carrier that the first terminal 101 supports for transmission.
  • the transmitting terminal supports the carriers A1, A2, A3, and A4 for transmission
  • the receiving terminal supports the carriers A2, A3, and A4 for reception
  • the receiving terminal preferentially supports the carriers A2 and A3 for reception
  • the transmitting terminal can determine the first carrier to be A2, A3, and A4.
  • the transmitting terminal can determine the first carrier to be A2 and A3.
  • the first terminal 101 may send the second indication information and/or the third indication information to the network device 103. That is, if the first terminal 101 is in an RRC connection state and the resource allocation mode of the first terminal 101 is a mode of autonomously selecting sending resources, the first terminal 101 may send the second indication information and/or the third indication information sent by the second terminal 102 to the network device 103.
  • the first terminal 101 may send the second indication information to the network device 103.
  • the previous second indication information may refer to the second indication information sent to the network device 103 last time.
  • the first terminal 101 may actively obtain the second indication information to determine whether the second indication information has changed. For example, the first terminal 101 may periodically obtain the second indication information to compare the second indication information currently obtained with the second indication information obtained last time. Alternatively, the first terminal 101 may obtain the second indication information and inform the network device 103 only when the second indication information changes. If the first terminal 101 does not obtain new second indication information, the first terminal 101 considers that the second indication information has not changed. Exemplarily, when the carrier supported by the second terminal 102 in unicast communication with the first terminal 101 changes, the second terminal 102 sends the second indication information to the first terminal 101 to inform it of the currently supported carrier.
  • the first terminal 101 when the second indication information changes, the first terminal 101 notifies the network device 103 of the changed second indication information.
  • the second indication information may send the changed new second indication information to the network device 103, or may send only the change amount of the second indication information to the network device 103.
  • the first terminal 101 can send a second indication message to the network device 103 to indicate that the second terminal 102 supports carriers a and c, or can send a second indication message to the network device 103 to indicate that the second terminal 102 no longer supports carrier b, and that the second terminal 102 supports carrier c.
  • the first terminal 101 may send the third indication information to the network device 103.
  • the previous third indication information may refer to the third indication information sent to the network device 103 last time.
  • the first terminal 101 may actively obtain the third indication information to determine whether the third indication information has changed. For example, the first terminal 101 may periodically obtain the third indication information to compare the third indication information currently obtained with the third indication information obtained last time. Alternatively, the first terminal 101 may obtain the third indication information and inform the network device 103 only when the third indication information changes. If the first terminal 101 does not obtain new third indication information, the first terminal 101 considers that the third indication information has not changed. In the case of the third indication information, when the carrier that the second terminal 102 preferentially supports changes, the second terminal 102 sends the third indication information to the first terminal 101 to inform it of the currently preferred supported carrier.
  • the first terminal 101 may send one or more of the second indication information and the third indication information to the network device 103 through Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the network device 103 may receive the second indication information and/or the third indication information sent by the first terminal 101 .
  • the network device 103 may determine the first carrier according to one or more of the second indication information and the third indication information.
  • the network device 103 may determine the first carrier based on one or more of the second carrier and the third carrier and the carrier supported by the first terminal 101 .
  • the network device 103 may determine the first carrier according to the carriers supported for reception by the second terminal 102 , one or more of the carriers that the second terminal 102 preferentially supports for reception, and the carriers supported for transmission by the first terminal 101 .
  • the first terminal 101 may receive the fifth indication information sent by the network device 103, and determine the first carrier for carrier aggregation according to the fifth indication information.
  • the fifth indication information may be used to indicate the first carrier determined by the network device 103.
  • the network device 103 may send the fifth indication information to the first terminal 101 via Uu RRC signaling.
  • the Uu RRC signaling may be RRCReconfiguration signaling or a newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 may release the unicast connection with the second terminal 102, or may use a single carrier to send sidelink data to the second terminal 102.
  • the unicast connection is a PC5-RRC connection.
  • the first terminal 101 does not support sending sidelink data on a carrier that the second terminal 102 preferably supports receiving, exemplarily, the second terminal 102 supports receiving sidelink data on multiple preferred carriers, and the multiple preferred carriers include legacy carriers that the R16/17 terminal supports sending and/or supports receiving, and also include other preferred carriers.
  • the first terminal 101 only supports sending sidelink data on legacy carriers supported by the R16/17 terminal, and does not support sending sidelink data on other preferred carriers supported by the second terminal 102.
  • the first terminal 101 can release the unicast connection between the second terminal 102, or can use a single carrier to send sidelink data to the second terminal 102.
  • the single carrier is a carrier supported by an R16/17 terminal for sending and/or receiving, also referred to as a legacy carrier.
  • Step S3702 Send first indication information to the second terminal.
  • the first indication information is used to indicate the first carrier.
  • the first terminal 101 may send first indication information to the second terminal 102 after determining the first carrier.
  • the first terminal 101 may send the first indication information to the second terminal 102 after receiving the fifth indication information sent by the network device 103 .
  • the first terminal 101 may send the first indication information to the second terminal 102 via PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 may send the first indication information to the second terminal 102 through other PC5 signaling, and other PC5 signaling, such as PC5 MAC CE, is not specifically limited in the present disclosure.
  • the second terminal 102 may receive the first indication information sent by the first terminal 101 .
  • the second terminal 102 may determine whether the first indication information is acceptable, and if not, may send fourth indication information to the first terminal 101, and the first terminal 101 receives the fourth indication information sent by the second terminal 102.
  • the fourth indication information may be used to instruct the second terminal 102 to reject the first indication information.
  • the first carrier indicated by the first indication information is carrier a and carrier b
  • the carriers supported by the second terminal 102 for reception are carrier a and carrier b
  • the second terminal 102 does not support simultaneous reception of data on carrier a and carrier b due to limited capabilities, so the second terminal 102 can reject the first indication information.
  • the first carrier indicated by the first indication information is not the carrier that the second terminal 102 first supports, so the second terminal 102 can reject the first indication information.
  • the fourth indication information may be carried by PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationCompleteSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the second terminal 102 can send the fourth indication information to the first terminal 101 through other PC5 signaling, and other PC5 signaling, such as PC5 MAC CE, is not specifically limited in the present disclosure.
  • the first terminal 101 may re-determine the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • the first terminal 101 may be configured to: Multiple items, and/or carriers supported by the first terminal 101, re-determine the first carrier.
  • the first terminal 101 can redetermine the first carrier based on the carrier supported by the second terminal 102 for reception, the carrier preferred to be supported for reception by the second terminal 102, one or more of the fourth indication information, and/or the carrier supported by the first terminal 101 for sending, and notify the second terminal 102 of the redetermined first carrier.
  • the first terminal 101 can notify the second terminal 102 of the first carrier redetermined by the first terminal 102 via the first indication information.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information to the network device 103.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information received from the second terminal 102 to the network device 103 through Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information to the network device 103.
  • the first terminal 101 may send fourth indication information to the network device 103, and the network device 103 receives the fourth indication information sent by the first terminal 101, and the fourth indication information is used to instruct the second terminal 102 to reject the first indication information, and the first indication information refers to the first indication information sent to the second terminal 102 after the first terminal 101 receives the fifth indication information sent by the network device 103.
  • the network device 103 may re-determine the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • the network device 103 may re-determine the first carrier based on one or more of the second indication information, the third indication information, the fourth indication information, and/or the carrier supported by the first terminal 101.
  • the network device 103 may re-determine the first carrier according to the carrier supported by the second terminal 102 for reception, the carrier preferred by the second terminal 102 for reception, one or more of the fourth indication information, and/or the carrier supported by the first terminal 101 for transmission, and notify the first terminal 101 of the re-determined first carrier, and the first terminal 101 then notifies the second terminal 102.
  • the first carrier re-determined by the network device 103 may be notified to the first terminal 101 through the fifth indication information, and exemplary, the first terminal 101 receives the fifth indication information sent by the network device 103 and then notifies the second terminal 102, and exemplary, the first terminal 101 may notify the second terminal 102 through the first indication information.
  • Step S3703 Send sidelink data to the second terminal via the first carrier.
  • the second terminal 102 receives the first indication information, and the first terminal 101 may send sidelink data to the second terminal 102 via the first carrier.
  • the second terminal 102 may receive the sidelink data sent by the first terminal 101 via the first carrier.
  • the scheme for determining the first carrier by the transmitting terminal involved in the embodiment of the present disclosure is applicable to the terminal operating in mode 2.
  • the transmitting terminal may be in RRC connected state or RRC IDLE (idle) state or RRC INACTIVE (sleeping) state or OOC state.
  • the transmitting terminal is in RRC IDLE state or RRC INACTIVE state or OOC state.
  • the scheme for determining the first carrier by the transmitting terminal involved in the embodiment of the present disclosure is applicable to a terminal operating in mode 1.
  • the transmitting terminal may be in an RRC connected state.
  • the first carrier determined by the transmitting terminal is determined according to the granularity of the sidelink data transmission direction.
  • A is the transmitting terminal, and the first carrier for carrier aggregation is determined by terminal A, and the first carrier is used for terminal A to send unicast data to terminal B.
  • B is the transmitting terminal, and the first carrier is determined by terminal B, and the first carrier is used for terminal B to send unicast data to terminal A.
  • the scheme for determining the first carrier by a network device involved in the embodiment of the present disclosure may be applicable to a terminal that is in an RRC connected state and operates in mode 2.
  • the network device determines the first carrier according to the granularity of the sidelink data transmission direction.
  • A is a transmitting terminal
  • the network device determines the first carrier for carrier aggregation and notifies terminal A, and the first carrier is used for terminal A to send unicast data to terminal B.
  • B is a transmitting terminal
  • the network device determines the first carrier and notifies terminal B, and the first carrier is used for terminal B to send unicast data to terminal A.
  • a source address may be replaced with a source layer 2 address
  • a target address may be replaced with a target layer 2 address
  • a source address target address pair may be replaced with a source layer 2 address target layer 2 address pair.
  • the method for determining a carrier involved in the embodiment of the present disclosure may include at least one of step S3701 to step S3702.
  • step S3701 may be implemented as an independent embodiment
  • step S3702 may be implemented as an independent embodiment, but is not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG4A is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG4A , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a second terminal 102, and the method includes:
  • Step S4101 Send second indication information and/or third indication information.
  • step S4101 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.
  • the second terminal 102 may send the second indication information and/or the third indication information to the first terminal 101, but is not limited thereto, and may also send the second indication information and/or the third indication information to other entities.
  • Step S4102 obtaining first indication information.
  • step S4102 can refer to step S2103 of FIG. 2A , the optional implementation of step S2205 of FIG. 2B , and other related parts of the embodiment involved in FIG. 2A , which will not be described in detail here.
  • the second terminal 102 receives the first indication information sent by the first terminal 101, but is not limited thereto, and may also receive the first indication information sent by other entities.
  • the second terminal 102 obtains first indication information specified by the protocol.
  • the second terminal 102 obtains the first indication information from an upper layer(s).
  • the method for determining a carrier involved in the embodiment of the present disclosure may include at least one of step S4101 to step S4102.
  • step S4101 may be implemented as an independent embodiment
  • step S4102 may be implemented as an independent embodiment, but is not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG4B is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG4B , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a second terminal 102, and the method includes:
  • Step S4201 Send second indication information and/or third indication information to the first terminal.
  • step S4201 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 S4202 receiving first indication information sent by the first terminal.
  • step S4202 can refer to step S2103 of FIG. 2A , the optional implementation of step S2205 of FIG. 2B , and other related parts of the embodiment involved in FIG. 2A , which will not be described in detail here.
  • Step S4203 Receive sidelink data sent by the first terminal through the first carrier.
  • step S4203 can refer to step S2103 of FIG. 2A , the optional implementation of step S2205 of FIG. 2B , and other related parts of the embodiment involved in FIG. 2A , which will not be described in detail here.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S4201 to S4203.
  • step S4201 may be implemented as an independent embodiment
  • step S4202 may be implemented as an independent embodiment
  • step S4203 may be implemented as an independent embodiment
  • step S4201 and step S4202 may be implemented as independent embodiments
  • step S4202 and step S4203 may be implemented as independent embodiments, but are not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG4C is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG4C , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a second terminal 102, and the method includes:
  • Step S4301 Send second indication information and/or third indication information to the first terminal.
  • step S4301 can refer to the optional implementation of step S2101 in Figure 2A and other related parts in the embodiment involved in Figure 2A, which will not be repeated here.
  • Step S4302 receiving first indication information sent by the first terminal.
  • step S4302 can refer to step S2103 of FIG. 2A , the optional implementation of step S2205 of FIG. 2B , and other related parts of the embodiment involved in FIG. 2A , which will not be described in detail here.
  • Step S4303 Send fourth indication information to the first terminal.
  • step S4303 can refer to step S2103 of FIG. 2A , the optional implementation of step S2205 of FIG. 2B , and other related parts of the embodiment involved in FIG. 2A , which will not be described in detail here.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S4301 to S4303.
  • step S4301 may be implemented as an independent embodiment
  • step S4302 may be implemented as an independent embodiment
  • step S4303 may be implemented as an independent embodiment
  • step S4301 and step S4302 may be implemented as independent embodiments
  • step S4302 and step S4303 may be implemented as independent embodiments, but are not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG4D is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG4D , an embodiment of the present disclosure relates to a method for determining a carrier, which is used for a second terminal 102, and the method includes:
  • Step S4401 receiving first indication information sent by a first terminal.
  • step S4401 can refer to step S2103 of FIG. 2A , the optional implementation of step S2205 of FIG. 2B , and other related parts of the embodiment involved in FIG. 2A , which will not be described in detail here.
  • the first indication information is used to indicate the first carrier.
  • the first terminal 101 may send first indication information to the second terminal 102 after determining the first carrier.
  • the first terminal 101 may send the first indication information to the second terminal 102 after receiving the fifth indication information sent by the network device 103 .
  • the first terminal 101 may send the first indication information to the second terminal 102 via PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 may send the first indication information to the second terminal 102 through other PC5 signaling, and other PC5 signaling, such as PC5 MAC CE, is not specifically limited in the present disclosure.
  • the second terminal 102 may receive the first indication information sent by the first terminal 101 .
  • the second terminal 102 may determine whether the first indication information is acceptable, and if not, may send fourth indication information to the first terminal 101, and the first terminal 101 receives the fourth indication information sent by the second terminal 102.
  • the fourth indication information may be used to instruct the second terminal 102 to reject the first indication information.
  • the first carrier indicated by the first indication information is carrier a and carrier b
  • the carriers supported by the second terminal 102 for reception are carrier a and carrier b
  • the second terminal 102 does not support simultaneous reception of data on carrier a and carrier b due to limited capabilities, so the second terminal 102 can reject the first indication information.
  • the first carrier indicated by the first indication information is not the carrier that the second terminal 102 first supports, so the second terminal 102 can reject the first indication information.
  • the fourth indication information may be carried by PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationCompleteSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the second terminal 102 can send the fourth indication information to the first terminal 101 through other PC5 signaling, and other PC5 signaling, such as PC5 MAC CE, is not specifically limited in the present disclosure.
  • the first terminal 101 may re-determine the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • the first terminal 101 may re-determine the first carrier according to one or more of the second indication information, the third indication information, the fourth indication information, and/or the carriers supported by the first terminal 101.
  • the first terminal 101 can redetermine the first carrier based on the carrier supported by the second terminal 102 for reception, the carrier preferred to be supported for reception by the second terminal 102, one or more of the fourth indication information, and/or the carrier supported by the first terminal 101 for sending, and notify the second terminal 102 of the redetermined first carrier.
  • the first terminal 101 can notify the second terminal 102 of the first carrier redetermined by the first terminal 102 via the first indication information.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information to the network device 103.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information received from the second terminal 102 to the network device 103 through Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information to the network device 103.
  • the first terminal 101 may send fourth indication information to the network device 103, and the network device 103 receives the fourth indication information sent by the first terminal 101, and the fourth indication information is used to instruct the second terminal 102 to reject the first indication information, and the first indication information refers to the first indication information sent to the second terminal 102 after the first terminal 101 receives the fifth indication information sent by the network device 103.
  • the network device 103 may re-determine the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • the network device 103 may re-determine the first carrier based on one or more of the second indication information, the third indication information, the fourth indication information, and/or the carrier supported by the first terminal 101.
  • the network device 103 may re-determine the first carrier according to the carrier supported by the second terminal 102 for reception, the carrier preferred by the second terminal 102 for reception, one or more of the fourth indication information, and/or the carrier supported by the first terminal 101 for transmission, and notify the first terminal 101 of the re-determined first carrier, and the first terminal 101 then notifies the second terminal 102.
  • the first carrier re-determined by the network device 103 may be notified to the first terminal 101 through the fifth indication information, and exemplary, the first terminal 101 receives the fifth indication information sent by the network device 103 and then notifies the second terminal 102, and exemplary, the first terminal 101 may notify the second terminal 102 through the first indication information.
  • Step S4402 receiving sidelink data sent by the first terminal via the first carrier.
  • the second terminal 102 receives the first indication information, and the first terminal 101 may send sidelink data to the second terminal 102 via the first carrier.
  • the second terminal 102 may receive the sidelink data sent by the first terminal 101 via the first carrier.
  • the method for determining a carrier involved in the embodiment of the present disclosure may include at least one of step S4401 to step S4402.
  • step S4401 may be implemented as an independent embodiment
  • step S4402 may be implemented as an independent embodiment, but is not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG5A is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG5A , an embodiment of the present disclosure relates to a method for determining a carrier, which is used in a network device 103, and the method includes:
  • Step S5101 obtaining second indication information and/or third indication information.
  • step S5101 can refer to the optional implementation of step S2202 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • the network device 103 receives the second indication information and/or the third indication information sent by the first terminal 101, but is not limited thereto, and may also receive the second indication information and/or the third indication information sent by other entities.
  • the first terminal 101 is in an RRC connected state and the resource allocation method of the first terminal 101 is a method of autonomously selecting sending resources.
  • the network device 103 obtains the second indication information and/or the third indication information specified by the protocol.
  • the network device 103 obtains the second indication information and/or the third indication information from an upper layer(s).
  • Step S5102 determine a first carrier for carrier aggregation.
  • step S5102 can refer to the optional implementation of step S2203 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • Step S5103 sending the fifth indication information.
  • step S5103 can refer to the optional implementation of step S2204 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • the network device 103 may send the fifth indication information to the first terminal, but is not limited thereto, and may also send the fifth indication information to other entities.
  • step S5101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S5101 to S5103.
  • step S5101 may be implemented as an independent embodiment
  • step S5102 may be implemented as an independent embodiment
  • step S5102 may be implemented as an independent embodiment
  • step S5101 and step S5102 may be implemented as independent embodiments
  • step S5102 and step S5103 may be implemented as independent embodiments, but are not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG5B is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG5B , an embodiment of the present disclosure relates to a method for determining a carrier, which is used in a network device 103, and the method includes:
  • Step S5201 receiving second indication information and/or third indication information sent by the first terminal.
  • step S5201 can refer to the optional implementation of step S2202 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • the first terminal 101 is in an RRC connected state and the resource allocation method of the first terminal 101 is a method of autonomously selecting sending resources.
  • Step S5202 determine a first carrier according to the second indication information and/or the third indication information.
  • step S5202 can refer to the optional implementation of step S2203 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S5203 Send fifth indication information to the first terminal.
  • step S5203 can refer to the optional implementation of step S2203 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • step S5201 is optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S5201 to S5203.
  • step S5201 may be implemented as an independent embodiment
  • step S5202 may be implemented as an independent embodiment
  • step S5203 may be implemented as an independent embodiment
  • step S5201 and step S5202 may be implemented as independent embodiments
  • step S5202 and step S5203 may be implemented as independent embodiments, but are not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG5C is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG5C , an embodiment of the present disclosure relates to a method for determining a carrier, which is used in a network device 103, and the method includes:
  • Step S5301 receiving second indication information and/or third indication information sent by the first terminal.
  • step S5301 can refer to the optional implementation of step S2202 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • the first terminal 101 is in an RRC connected state and the resource allocation method of the first terminal 101 is a method of autonomously selecting sending resources.
  • Step S5302 determine a first carrier according to the second indication information and/or the third indication information.
  • step S5302 can refer to the optional implementation of step S2203 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S5303 Send fifth indication information to the first terminal.
  • step S5303 can refer to the optional implementation of step S2203 in FIG. 2B and other related parts in the embodiment involved in FIG. 2B , which will not be described in detail here.
  • Step S5304 receive fourth indication information sent by the first terminal.
  • step S5304 can refer to the optional implementation of step S2203 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • Step S5305 re-determine the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • step S5305 can refer to the optional implementation of step S2203 in Figure 2B and other related parts in the embodiment involved in Figure 2B, which will not be repeated here.
  • step S5301 and step S5305 are optional, and one or more of these steps may be omitted or replaced in different embodiments.
  • the method for determining a carrier involved in the embodiments of the present disclosure may include at least one of steps S5301 to S5305.
  • step S5301 may be implemented as an independent embodiment
  • step S5302 may be implemented as an independent embodiment
  • step S5303 may be implemented as an independent embodiment
  • step S5304 may be implemented as an independent embodiment
  • step S5305 may be implemented as an independent embodiment
  • step S5302 step S5303 and step S5304 may be implemented as independent embodiments
  • step S5302, step S5303, step S5304 and step S5305 may be implemented as independent embodiments, but are not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • FIG5D is a flow chart of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG5D , an embodiment of the present disclosure relates to a method for determining a carrier, which is used in a network device 103, and the method includes:
  • Step S5401 Receive one or more of the second indication information, the third indication information, and the fourth indication information sent by the first terminal.
  • the first terminal 101 is in an RRC connected state and the resource allocation method of the first terminal 101 is a method of autonomously selecting sending resources.
  • the second indication information may be used to indicate a second carrier supported by the second terminal 102
  • the third indication information may be used to indicate a third carrier that the second terminal 102 preferably supports.
  • carrier In some embodiments, “carrier”, “frequency band”, “spectrum” and “frequency” may be used interchangeably.
  • the second carrier supported by the second terminal 102 may include a carrier supported for sending and/or supported for receiving by the second terminal 102.
  • the carrier supported for sending by the second terminal 102 may refer to a carrier that the second terminal 102 can use to send sidelink data
  • the carrier supported for receiving by the second terminal 102 may refer to a carrier that the second terminal 102 can use to receive sidelink data.
  • the third carrier that the second terminal 102 preferably supports may include a carrier that the second terminal 102 preferably supports sending and/or supports receiving.
  • the third carrier that the second terminal 102 preferably supports may be a carrier that the second terminal 102 preferably supports on the supported second carrier.
  • the carrier that the second terminal 102 preferably supports for sending may refer to the carrier that the second terminal 102 may preferably use for sending sidelink data
  • the carrier that the second terminal 102 preferably supports for receiving may refer to the carrier that the second terminal 102 may preferably use for receiving sidelink data.
  • the preferred may refer to the carrier that the second terminal 102 expects to use for sending or receiving information.
  • the second terminal 102 may recommend its expected single carrier to the first terminal 101, or may recommend one or more of its expected multiple carriers to the first terminal 101, so that the first terminal 101 determines the carrier that can be aggregated based on the carrier that the second terminal 102 expects to use.
  • the second terminal 102 may inform the network device 103 of the carrier that the second terminal 102 expects to use through the first terminal 101, so that the network device 103 determines the carrier that can be aggregated based on the carrier that the second terminal 102 expects to use.
  • the support described in the present disclosure may refer to support for sending sidelink data, or support for receiving sidelink data, or support for sending and receiving sidelink data.
  • the supporting sending and/or supporting receiving described in the present disclosure may refer to supporting sending and/or supporting receiving sidelink data.
  • the supporting sending described in the present disclosure may refer to supporting sending side link data
  • supporting receiving may refer to supporting receiving side link data
  • the first terminal 101 may receive one or more of the second indication information and the third indication information sent by the second terminal 102 .
  • the first terminal 101 may send the second indication information and/or the third indication information to the network device 103. That is, if the first terminal 101 is in an RRC connection state and the resource allocation mode of the first terminal 101 is a mode of autonomously selecting sending resources, the first terminal 101 may send the second indication information and/or the third indication information sent by the second terminal 102 to the network device 103.
  • the first terminal 101 may send one or more of the second indication information and the third indication information to the network device 103 through Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the network device 103 may receive the second indication information and/or the third indication information sent by the first terminal 101 .
  • the network device 103 may determine the first carrier according to one or more of the second indication information and the third indication information.
  • the network device 103 may determine the first carrier based on one or more of the second carrier and the third carrier and the carrier supported by the first terminal 101 .
  • the network device 103 may determine the first carrier according to the carriers supported for reception by the second terminal 102 , one or more of the carriers that the second terminal 102 preferentially supports for reception, and the carriers supported for transmission by the first terminal 101 .
  • the first terminal 101 may receive the fifth indication information sent by the network device 103, and determine the first carrier for carrier aggregation according to the fifth indication information.
  • the fifth indication information may be used to indicate the first carrier determined by the network device 103, and the first carrier may be used by the first terminal 101 to send sidelink data to the second terminal 102.
  • the network device 103 may send the fifth indication information to the first terminal 101 through Uu RRC signaling.
  • the Uu RRC signaling may be RRCReconfiguration signaling or a newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 after receiving the fifth indication information sent by the network device 103 , the first terminal 101 sends the first indication information to the second terminal 102 .
  • the first terminal 101 may determine the first carrier according to the fifth indication information, and send the first indication information to the second terminal 102 .
  • the second terminal 102 may determine whether the first indication information is acceptable, and if not, may send fourth indication information to the first terminal 101, and the first terminal 101 receives the fourth indication information sent by the second terminal 102.
  • the fourth indication information may be used to instruct the second terminal 102 to reject the first indication information.
  • the first carrier indicated by the first indication information is carrier a and carrier b
  • the carriers supported by the second terminal 102 for reception are carrier a and carrier b
  • the second terminal 102 does not support simultaneous reception of data on carrier a and carrier b due to limited capabilities, so the second terminal 102 can reject the first indication information.
  • the first carrier indicated by the first indication information is not the carrier that the second terminal 102 first supports, so the second terminal 102 can reject the first indication information.
  • the fourth indication information may be carried by PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationCompleteSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the second terminal 102 can send the fourth indication information to the first terminal 101 through other PC5 signaling, and other PC5 signaling, such as PC5 MAC CE, is not specifically limited in the present disclosure.
  • the first terminal 101 may send fourth indication information to the network device 103, the network device 103 receives the fourth indication information, and re-determines the first carrier according to one or more of the second indication information, the third indication information, and the fourth indication information.
  • the first terminal 101 sends the fourth indication information to the network device 103 via Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the first terminal 101 may send one or more of the second indication information, the third indication information, and the fourth indication information received from the second terminal 102 to the network device 103 through Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined Uu RRC signaling, which is not specifically limited in the present disclosure.
  • the network device 103 re-determines the first carrier according to one or more of the second indication information, the third indication information, the fourth indication information, and/or the carrier supported by the first terminal 101.
  • the network device 103 may re-determine the first carrier according to the carrier supported by the second terminal 102 for reception, the carrier preferred by the second terminal 102 for reception, one or more of the fourth indication information, and/or the carrier supported by the first terminal 101 for transmission, and notify the first terminal 101 of the re-determined first carrier, and the first terminal 101 then notifies the second terminal 102.
  • the first carrier re-determined by the network device 103 may be notified to the first terminal 101 through the fifth indication information, and exemplary, the first terminal 101 receives the fifth indication information sent by the network device 103 and then notifies the second terminal 102, and exemplary, the first terminal 101 may notify the second terminal 102 through the first indication information.
  • the scheme for determining the first carrier by a network device involved in the embodiment of the present disclosure may be applicable to a terminal that is in an RRC connected state and operates in mode 2.
  • the method for determining the carrier involved in the embodiment of the present disclosure is determined according to the granularity of the sidelink data transmission direction.
  • A is a transmitting terminal
  • the network device determines the first carrier for carrier aggregation and notifies terminal A, and the first carrier is used for terminal A to send unicast data to terminal B.
  • B is a transmitting terminal
  • the network device determines the first carrier and notifies terminal B, and the first carrier is used for terminal B to send unicast data to terminal A.
  • a source address may be replaced with a source layer 2 address
  • a target address may be replaced with a target layer 2 address
  • a source address target address pair may be replaced with a source layer 2 address target layer 2 address pair.
  • FIG6 is an interactive schematic diagram of a method for determining a carrier according to an embodiment of the present disclosure. As shown in FIG6, an embodiment of the present disclosure relates to a method for determining a carrier, which is used in a communication system 100, and the communication system 100 includes a first terminal 101 and a second terminal 102. The method includes:
  • Step S6101 determine a first carrier for carrier aggregation.
  • step S6101 can refer to the optional implementation of step S2201 and step S2202 in Figure 2A, the optional implementation of step S2201, step S2202, step S2203 in Figure 2B, and other related parts in the embodiments involved in Figures 2A and 2B, which will not be repeated here.
  • Step S6102 The first terminal 101 sends first indication information to the second terminal 102.
  • step S6102 can refer to the optional implementation of step S2103 in Figure 2A, the optional implementation of step S2204 and step S2205 in Figure 2B, and other related parts in the embodiments involved in Figures 2A and 2B, which will not be repeated here.
  • Step S6103 The first terminal 101 sends sidelink data to the second terminal 102 via the first carrier.
  • the second terminal 102 may receive the sidelink data sent by the first terminal 101 via the first carrier.
  • step S6103 can refer to the optional implementation of step S2103 in Figure 2A, the optional implementation of step S2204 and step S2205 in Figure 2B, and other related parts in the embodiments involved in Figures 2A and 2B, which will not be repeated here.
  • the method for determining a carrier involved in the embodiment of the present disclosure may include at least one of steps S6101 to S6103.
  • step S6101 may be implemented as an independent embodiment
  • step S6102 may be implemented as an independent embodiment
  • step S6103 may be implemented as an independent embodiment
  • step S6101 and step S6102 may be implemented as independent embodiments
  • step S6102 and step S6103 may be implemented as independent embodiments, but are not limited thereto.
  • each step can be independent, combined arbitrarily or exchanged in order, and the optional methods or optional examples can be combined arbitrarily.
  • a transmitting terminal determines aggregated carriers and notifies a receiving terminal.
  • the aggregated carrier is determined according to the SL data transmission direction granularity (direction)
  • A is a transmitting terminal, and terminal A determines the carrier used for carrier aggregation.
  • the aggregated carrier is used for terminal A to send unicast data to terminal B.
  • B is a transmitting terminal, and terminal B determines the carrier used for carrier aggregation, and the aggregated carrier is used for terminal B to send unicast data to terminal A.
  • the receiving terminal notifies the sending terminal of the carrier/frequency band supported for reception through the first information.
  • the receiving terminal notifies the sending terminal of the carrier/frequency band supported for reception through PC5-RRC signaling.
  • the receiving terminal notifies the sending terminal of the carrier/frequency band supported for transmission through PC5-RRC signaling.
  • the PC5-RRC signaling may be UECapabilityInformationSidelink signaling or UEAssistanceInformationSidelink or a newly defined PC5-RRC signaling.
  • the receiving terminal may notify the sending terminal of the first information through other PC5 signaling, such as PC5 MAC CE. This disclosure does not make specific limitations.
  • the receiving terminal may notify the sending terminal of the preferred carrier/frequency band.
  • the receiving terminal may select some preferred carriers/frequency bands on the carriers/frequency bands that support reception, and notify the sending terminal, for example, through a second information indication.
  • the receiving terminal may send only the first information to the sending terminal, or may send only the second information to the sending terminal, or may send both the first information and the second information to the sending terminal.
  • the first information and the second information may be carried by the same PC5-RRC signaling, or may be carried by different PC5-RRC signaling.
  • the receiving terminal may notify the sending terminal of the second information through other PC5 signaling, such as PC5 MAC CE. This is not specifically limited in the present disclosure.
  • the receiving terminal may send the first information and/or the second information based on the request of the sending terminal.
  • the sending terminal may request the receiving terminal to send the first information and/or the second information through PC5-RRC signaling.
  • the PC5-RRC signaling may be UECapabilityEnquirySidelink signaling or a newly defined PC5-RRC signaling.
  • the sending terminal may notify the receiving terminal of the carrier/frequency band supported for sending in the request signaling.
  • the receiving terminal may determine the first information and/or the second information based on the carrier/frequency band supported for receiving by itself and the carrier/frequency band supported for sending by the sending terminal.
  • the sending terminal may be configured/reconfigured from mode 1 to mode 2 and/or mode 2 to mode 1 in the operating mode, and request the receiving terminal to send the first information and/or the second information through PC5-RRC signaling.
  • the receiving terminal may not send the first information and/or the second information based on the request of the sending terminal.
  • the receiving terminal may send the first information and/or the second information if the first information and/or the second information has not been sent before or the first information and/or the second information has changed compared to before.
  • the PC5-RRC signaling may include a carrier identifier/frequency band list (first list), wherein the first list indicates the carriers/frequency bands supported for reception by the receiving terminal, and specifically may indicate that the terminal supports transmission/reception on the carriers/frequency bands.
  • the carriers/frequency bands that support both transmission and reception may be indicated by one list, and only the carriers/frequency bands that support transmission may be indicated by one list (optional), and only the carriers/frequency bands that support reception may be indicated by another list (optional).
  • the transmitting terminal determines the aggregated carrier according to the first information and/or the second information.
  • the transmitting terminal determines the aggregated carrier in combination with the carrier/frequency band supported by the transmitting terminal, the first information and/or the second information.
  • the aggregated carrier is used to send unicast data to the receiving terminal.
  • the carrier/frequency band supported by the transmitting terminal is ABCD
  • the receiving terminal If the carrier/frequency band supported by the receiving terminal is BCD, the transmitting terminal may determine the aggregated carrier as BCD.
  • the transmitting terminal may determine the aggregated carrier as BC, BD or CD. This is not specifically limited in the present disclosure. In this way, the carrier monitored by the receiving terminal can be reduced, thereby achieving a power saving effect.
  • the transmitting terminal notifies the receiving terminal of the aggregated carriers through third information.
  • the sending terminal notifies the sending terminal of the aggregated carrier via PC5-RRC signaling.
  • the sending terminal notifies the receiving terminal of the third information via PC5-RRC signaling.
  • the PC5-RRC signaling may be RRCReconfigurationSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the sending terminal may notify the receiving terminal of the third information via other PC5 signaling, such as PC5 MAC CE. This is not specifically limited in the present disclosure.
  • the receiving terminal may reject the aggregated carriers determined by the sending terminal.
  • the receiving terminal receives the third information and can determine whether the aggregated carrier determined by the sending terminal is acceptable based on the terminal implementation. If it is not acceptable, the receiving terminal can reject the aggregated carrier determined by the sending terminal and notify the sending terminal, for example, through the fourth information indication.
  • the fourth information can be carried by PC5-RRC signaling.
  • the PC5-RRC signaling can be RRCReconfigurationCompleteSidelink signaling or a newly defined PC5-RRC signaling, which is not specifically limited in the present disclosure.
  • the receiving terminal can notify the sending terminal of the fourth information through other PC5 signaling, such as PC5 MAC CE. This is not specifically limited in the present disclosure.
  • the sending terminal operates in mode 2.
  • the sending terminal may be in an RRC connected state or an RRC IDLE/INACTIVE state or an OOC state.
  • the sending terminal may be limited to being in an RRC IDLE/INACTIVE/OOC state.
  • a sending terminal in an RRC connected state and operating in mode 2 may notify the network device of the first information and/or the second information and/or the fourth information.
  • the sending terminal may notify the network device of the first information and/or the second information and/or the fourth information through Uu RRC signaling.
  • the Uu RRC signaling may be SUI or UAI or other newly defined RRC signaling.
  • the network device determines the aggregated carrier by acquiring the first information and/or the second information and/or the fourth information, in combination with the carrier/frequency band supported by the sending terminal, and notifies the sending terminal through Uu RRC signaling.
  • the Uu RRC signaling may be RRCReconfiguration signaling or other signaling, which is not specifically limited in the present disclosure.
  • the sending terminal receives the aggregated carrier configured by the network device, and notifies the receiving terminal (the third information) through PC5-RRC signaling.
  • the sending terminal determines that transmission is not supported on any carrier supported by the receiving terminal, and the sending terminal notifies the higher layer to release the PC5-RRC connection.
  • aggregated carriers, carriers used for carrier aggregation, and first carriers used for carrier aggregation may be interchangeable.
  • part or all of the steps and their optional implementations may be arbitrarily combined with part or all of the steps in other embodiments, or may be arbitrarily combined with optional implementations of other embodiments.
  • 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 device 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, and instructions are stored in the memory.
  • 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 device, 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 may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits.
  • the hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in
  • 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
  • FIG7A is a schematic diagram of the structure of the first terminal proposed in an embodiment of the present disclosure.
  • the first terminal 7100 may include: at least one of a transceiver module 7101, a processing module 7102, etc.
  • the processing module is used to determine a first carrier for carrier aggregation;
  • the transceiver module is used to send a first indication information to a second terminal, the first indication information is used to indicate the first carrier, and the second terminal is a terminal that establishes a unicast connection with the first terminal; and the sidelink data is sent to the second terminal via the first carrier.
  • the transceiver module is used to perform at least one of the communication steps such as sending and/or receiving performed by the first terminal 101 in any of the above methods (for example, step S2103, but not limited thereto), which will not be repeated here.
  • the processing module is used to perform at least one of the other steps (for example, step S2102, but not limited thereto) performed by the first terminal 101 in any of the above methods, which will not be repeated here.
  • FIG 7B is a schematic diagram of the structure of the second terminal proposed in an embodiment of the present disclosure.
  • the second terminal 7200 may include: at least one of a transceiver module 7201, a processing module 7202, etc.
  • the above-mentioned transceiver module is used to receive a first indication information sent by a first terminal, the first indication information is used to indicate a first carrier for carrier aggregation, and the second terminal is a terminal that establishes a unicast connection with the first terminal; and the sidelink data sent by the first terminal is received through the first carrier.
  • the above-mentioned transceiver is used to perform at least one of the communication steps such as sending and/or receiving (for example, step S4101, but not limited to this) performed by the second terminal 102 in any of the above methods, which will not be repeated here.
  • the above-mentioned processing module is used to perform at least one of the other steps performed by the second terminal 102 in any of the above methods, which will not be repeated here.
  • FIG. 7C is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure.
  • the network device 7100 may include: at least one of a transceiver module 7301, a processing module 7302, etc.
  • the transceiver module is used to receive one or more of the second indication information, the third indication information, and the fourth indication information sent by the first terminal, the second indication information is used to indicate the second carrier supported by the second terminal, the third indication information is used to indicate the third carrier preferred by the second terminal, and the fourth indication information is used to indicate that the second terminal rejects the first indication information, and the first indication information is used to indicate the first carrier used for carrier aggregation, and the first carrier is used by the first terminal to send sidelink data to the second terminal.
  • the transceiver module is used to perform at least one of the communication steps such as sending and/or receiving performed by the network device 103 in any of the above methods (for example, step S5101, but not limited thereto), which will not be repeated here.
  • the processing module is used to perform at least one of the other steps (for example, step S5102, but not limited thereto) performed by the network device 103 in any of the above methods, which will not be repeated here.
  • the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated.
  • the transceiver module may be interchangeable with the transceiver.
  • the processing module can be a module or include multiple submodules.
  • the multiple submodules respectively execute all or part of the steps required to be executed by the processing module.
  • the processing module can be replaced with the processor.
  • FIG8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure.
  • the communication device 8100 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 8100 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 8100 includes one or more processors 8101.
  • the processor 8101 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 8100 is used to execute any of the above methods.
  • the communication device 8100 further includes one or more memories 8102 for storing instructions.
  • the memory 8102 may also be outside the communication device 8100.
  • the communication device 8100 further includes one or more transceivers 8103.
  • the transceiver 8103 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2101, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, step S2102, 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 8100 may include one or more interface circuits 8104.
  • the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 may be used to receive signals from the memory 8102 or other devices, and may be used to send signals to the memory 8102 or other devices.
  • the interface circuit 8104 may read instructions stored in the memory 8102 and send the instructions to the processor 8101.
  • the communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A.
  • 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.
  • FIG88B is a schematic diagram of the structure of a chip 8200 provided in an embodiment of the present disclosure.
  • the communication device 8200 may be a chip or a chip system
  • the chip 8200 includes one or more processors 8201, and the chip 8200 is used to execute any of the above methods.
  • the chip 8200 further includes one or more interface circuits 8202.
  • the interface circuit 8202 is connected to the memory 8203.
  • the interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to the memory 8203 or other devices.
  • the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.
  • the interface circuit 8202 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2101, but not limited to this), and the processor 8201 performs at least one of the other steps (for example, step S2102, but not limited to this).
  • interface circuit interface circuit
  • transceiver pin transceiver
  • the chip 8200 further includes one or more memories 8203 for storing instructions.
  • the memory 8203 may be outside the chip 8200.
  • the present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 8100, the communication device 8100 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 8100, enables the communication device 8100 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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Abstract

La présente divulgation concerne un procédé de détermination de porteuse, un premier terminal, un second terminal et un dispositif de réseau. Le procédé consiste à : déterminer une première porteuse utilisée pour une agrégation de porteuses ; envoyer de premières informations d'indication à un second terminal, les premières informations d'indication étant utilisées pour indiquer la première porteuse, et le second terminal étant un terminal qui établit une connexion de diffusion individuelle avec un premier terminal ; et envoyer des données de liaison latérale au second terminal au moyen de la première porteuse. Ainsi, un terminal d'envoi peut déterminer une porteuse utilisée pour une agrégation de porteuses et pour une communication de diffusion individuelle entre le terminal d'envoi et un terminal de réception, notifier au terminal de réception la porteuse, et envoyer des données de liaison latérale au terminal de réception au moyen de la porteuse utilisée pour une agrégation de porteuses, de telle sorte que le terminal de réception peut recevoir les données de liaison latérale au moyen de la porteuse utilisée pour une agrégation de porteuses, ce qui permet de réduire les porteuses surveillées par le terminal de réception et d'économiser de l'énergie électrique.
PCT/CN2023/112070 2023-08-09 2023-08-09 Procédé de détermination de porteuse, premier terminal, second terminal et dispositif de réseau Pending WO2025030441A1 (fr)

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CN202380010519.5A CN119948983A (zh) 2023-08-09 2023-08-09 确定载波的方法、第一终端、第二终端、网络设备
PCT/CN2023/112070 WO2025030441A1 (fr) 2023-08-09 2023-08-09 Procédé de détermination de porteuse, premier terminal, second terminal et dispositif de réseau

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PCT/CN2023/112070 WO2025030441A1 (fr) 2023-08-09 2023-08-09 Procédé de détermination de porteuse, premier terminal, second terminal et dispositif de réseau

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