WO2022001969A1 - Procédé et appareil de fourniture d'informations auxiliaires - Google Patents

Procédé et appareil de fourniture d'informations auxiliaires Download PDF

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Publication number
WO2022001969A1
WO2022001969A1 PCT/CN2021/102805 CN2021102805W WO2022001969A1 WO 2022001969 A1 WO2022001969 A1 WO 2022001969A1 CN 2021102805 W CN2021102805 W CN 2021102805W WO 2022001969 A1 WO2022001969 A1 WO 2022001969A1
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WIPO (PCT)
Prior art keywords
terminal
information
resource
communication
discovery
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PCT/CN2021/102805
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English (en)
Chinese (zh)
Inventor
才宇
徐海博
姚楚婷
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华为技术有限公司
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Publication of WO2022001969A1 publication Critical patent/WO2022001969A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method for providing assistance information and a UE.
  • the neighboring device uses the resources broadcasted by the base station to perform side-chain communication or side-chain discovery.
  • the neighboring device uses preconfigured resources for sidechain communication or sidechain discovery.
  • the present application provides a resource configuration method and apparatus for enabling a terminal that does not communicate directly with a base station to obtain resources configured by the base station for side chain communication or side chain discovery.
  • the second terminal when the first terminal does not communicate directly with the access network device, the second terminal obtains the first resource from the access network device, and the first resource is used for side chain communication/side chain communication of the first terminal discovery; after that, the second terminal sends the second information to the first terminal, so that the first terminal can obtain the resources configured by the access network device for side chain communication/side chain discovery.
  • the first terminal uses the resources configured by the access network device to perform sidechain communication/sidechain discovery, so as to avoid affecting the normal communication of other terminals.
  • the first information is used to indicate the first resource, including: the first information is used to indicate the second resource, and the second resource includes the first resource.
  • the method further includes: the second terminal sends third information to the access network device, where the third information is used to request the first resource;
  • the first preset condition includes one or more of the following: the second terminal performs a direct discovery process; or, the two terminals measure The quality of the wireless channel to the target cell is greater than or equal to the first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or, the second terminal receives the fifth information, and the fifth information is used to instruct the second terminal to send the second information.
  • the first preset condition includes one or more of the following: the second terminal performs a direct discovery process; or, the second terminal The measured wireless channel quality of the target cell is greater than or equal to the first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or, the second terminal receives the first Five pieces of information, the fifth information is used to instruct the second terminal to send the second information.
  • the method before the second terminal receives the first information sent by the access network device, the method further includes: the second terminal and the first terminal perform a direct discovery process.
  • the first preset condition includes one or more of the following: a direct connection between the second terminal and the first terminal to be established; communication; or, the wireless channel quality of the target cell measured by the two terminals is greater than or equal to the first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or, the second terminal receives the access network device or The fifth information sent by the first terminal, where the fifth information is used to instruct the second terminal to send the second information, or the fifth information is used to instruct the second terminal to acquire the first resource.
  • sending the second information to the first terminal by the second terminal includes: the second terminal sends the second information to the first terminal on a third resource, and the third resource is preconfigured by the first terminal for receiving A subset of resources for the second information.
  • the method further includes: when the second preset condition is satisfied, the second terminal stops sending the second information. In this way, it is beneficial to reduce signaling overhead and save power consumption of the second terminal.
  • the second preset condition includes one or more of the following: the second terminal receives the access network device or the first terminal.
  • the sixth information sent, the sixth information is used to instruct the second terminal to stop sending the third information, or the sixth information is used to instruct the second terminal to stop acquiring the first resource; or, the second terminal determines The direct communication connection between one terminals has been disconnected; or, the second terminal receives an instruction from the first higher layer, and the first upper layer instruction is used to instruct the second terminal to release the direct communication connection; or, the second terminal receives an instruction from the second higher layer , the second high-level instruction is used to instruct the second terminal to stop performing the direct communication service; or, the second terminal receives the third high-level instruction, and the third high-level instruction is used to instruct the second terminal to stop performing the direct discovery service; or, the second terminal The discovery message sent by the first terminal is received.
  • the method further includes: the second terminal sends fourth information to the first terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within the coverage of the target cell, and the target cell is the first terminal.
  • the camping cell of the second terminal or the serving cell of the second terminal In this way, the first terminal can determine whether it is within the coverage of the target cell according to the fourth information sent by the second terminal.
  • the first terminal can select appropriate resources for sidechain communication/sidechain discovery, so as to avoid affecting normal communication of other terminals.
  • the method when the first resource is used for the first terminal to perform sidechain communication, the method further includes: the first terminal sends and/or receives sidechain communication on the first resource.
  • the method further includes: the first terminal receives fourth information sent by the second terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within the coverage of a target cell, and the target cell is The camping cell of the second terminal or the serving cell of the second terminal; the first terminal determines whether the first terminal is within the coverage of the target cell according to the fourth information. Therefore, the first terminal can select appropriate resources for side chain communication/side chain discovery, so as to avoid affecting the normal communication of other terminals.
  • the method further includes: the access network device receives third information sent by the second terminal, where the third information is used to request the first resource.
  • the communication unit is further configured to send third information to the access network device, where the third information is used to request the first resource;
  • the processing unit is further configured to perform a direct discovery process with the first terminal.
  • the first preset condition includes one or more of the following: a direct connection between the second terminal and the first terminal to be established; communication; or, the wireless channel quality of the target cell measured by the two terminals is greater than or equal to the first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or, the second terminal receives the access network device or The fifth information sent by the first terminal, where the fifth information is used to instruct the second terminal to send the second information, or the fifth information is used to instruct the second terminal to acquire the first resource.
  • the second preset condition includes one or more of the following: the second terminal receives the access network device or the first terminal.
  • the sixth information sent, the sixth information is used to instruct the second terminal to stop sending the third information, or the sixth information is used to instruct the second terminal to stop acquiring the first resource; or, the second terminal determines The direct communication connection between one terminals has been disconnected; or, the second terminal receives an instruction from the first higher layer, and the first upper layer instruction is used to instruct the second terminal to release the direct communication connection; or, the second terminal receives an instruction from the second higher layer , the second high-level instruction is used to instruct the second terminal to stop performing the direct communication service; or, the second terminal receives the third high-level instruction, and the third high-level instruction is used to instruct the second terminal to stop performing the direct discovery service.
  • the communication unit when the first resource is used for the first terminal to perform sidechain communication, is further configured to send and/or receive sidechain communication on the first resource.
  • the communication unit is further configured to receive the second information sent by the second terminal on the third resource, where the third resource is a subset of the resources preconfigured by the first terminal for receiving the second information.
  • the communication unit is further configured to receive fourth information sent by the second terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within the coverage of the target cell, and the target cell is the second terminal.
  • the processing unit is further configured to determine whether the first terminal is within the coverage of the target cell according to the fourth information.
  • FIG. 13 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
  • the Monitoring UE monitors and/or receives a discovery notification message.
  • the discovery request message carries a relay service code (relay service code).
  • the direct link establishment process includes the following steps:
  • the target UE sends a direct communication reject message (Direct communication reject) to the initiating UE.
  • a direct communication reject message Direct communication reject
  • the terminal If the terminal detects that at least one cell on the frequency for sidelink communication or sidelink discovery meets the cell selection criteria, the terminal considers itself to be within coverage on this frequency. Otherwise, the terminal considers itself to be out of coverage on this frequency.
  • the resources used by the terminal for direct communication transmission are the resources in the resource pool broadcasted by the cell for direct communication transmission, or the resources configured by the base station for the terminal for direct communication The resource in the resource pool sent.
  • the resources used by the terminal for direct communication sending are resources in a preconfigured resource pool for direct communication sending.
  • the present application provides a resource allocation method (also referred to as a method for providing auxiliary information), which is applicable to various communication systems, for example, a new radio interface (new radio, NR) communication system, future evolution system or various communication fusion systems, etc.
  • a resource allocation method also referred to as a method for providing auxiliary information
  • the technical solutions provided in this application can be applied to various application scenarios, such as machine to machine (M2M), macro-micro communication, enhanced mobile broadband (eMBB), ultra-reliable and ultra-low latency Communication (ultra-reliable & low latency communication, uRLLC) and massive IoT communication (massive machine type communication, mMTC) and other scenarios.
  • M2M machine to machine
  • eMBB enhanced mobile broadband
  • uRLLC ultra-reliable and ultra-low latency Communication
  • massive IoT communication massive machine type communication
  • a communication system provided by an embodiment of the present application includes one or more first terminals (only one is shown in FIG. 5 ), one or more second terminals (only one is shown in FIG. 5 ) one is shown) and one or more access network devices (only one is shown in Figure 5).
  • the first terminal does not directly communicate with the access network device.
  • the first terminal does not communicate directly with the access network device, which may mean that the first terminal and the access network device cannot establish an end-to-end connection on the physical layer, the MAC layer and/or the RLC layer.
  • the first terminal cannot directly receive the control signaling or user plane data sent by the access network device.
  • the first terminal does not communicate directly with the access network device, which may be caused by the following reasons: the first terminal is not within the coverage of the access network device, or the first terminal is at the edge of the coverage of the access network device, Or the first terminal is in an area with poor access network signal quality, or the first terminal cannot be directly served by the access network equipment, or the first terminal does not set a Uu port, or the first terminal is turned off to communicate directly with the access network equipment function, or the first terminal is in an energy saving mode, or the power of the first terminal is low, or the antenna power of the first terminal is low, and so on.
  • the second terminal may communicate directly with the access network device. That is, when the second terminal is located within the coverage of the cell corresponding to the access network device, the second terminal may initiate an access procedure to the access network device to access the communication network.
  • the second terminal may communicate directly with the access network device, which may mean that the second terminal and the access network device may establish an end-to-end connection on the physical layer, the MAC layer and/or the RLC layer.
  • the above-mentioned terminal may be a user equipment with a wireless transceiver function or a chip system provided in the user equipment.
  • the above-mentioned device may also be referred to as a station (station, STA), UE, access device, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote device, mobile device, user equipment, wireless communication device , user agent or user device.
  • the above-mentioned equipment includes but is not limited to: mobile phone (mobile phone), tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, roadside devices ( Road Site Unit (RSU), wireless devices in industrial control, wireless devices in self driving, wireless devices in transportation safety, wireless devices in smart cities equipment, sensor equipment, such as monitoring equipment, etc.
  • mobile phone mobile phone
  • tablet computer tablet computer
  • RSU Road Site Unit
  • the above-mentioned first terminal and the second terminal communicate directly through a sidelink.
  • the direct communication between the terminals may also adopt other forms or wireless connections of other names, which are not limited in this application.
  • the first resource is used for the first terminal to perform sidechain communication, or the first resource is used for the first terminal to perform sidechain discovery.
  • the first resource is used for the first terminal to perform side chain communication, which may be understood as: the first terminal sends or receives side chain communication on the first resource. It should be understood that sending or receiving sidechain communications on the first resource may be sending or receiving sidechain communications on one or more of the first resources.
  • Sending side chain communication includes sending side chain communication data or signaling, and receiving side chain communication includes receiving side chain communication data or signaling.
  • the sidechain communication data is transmitted on the physical sidelink shared channel (PSSCH), and the sidechain signaling is transmitted on the PSSCH or the physical sidelink control channel (PSCCH). That is, transmitting sidechain communications includes transmitting PSSCH and/or PSCCH.
  • Receiving sidechain communications includes receiving PSSCH and/or PSCCH.
  • the first resource may include one or more resources.
  • the first resource may include one or more resource pools, and one resource pool may include one or more resources.
  • the resource pool may also have other names, such as resource collection, which is not limited.
  • the resource pool includes one or more PRBs, or the resource pool includes one or more subchannels.
  • a resource pool includes one or more time units.
  • Case 1 Any resource indicated by the first information is the first resource.
  • Case 2 The first information is used to indicate the second resource, and the first resource is a part of the second resource.
  • the second resource is a resource configured by the access network device for direct communication or direct discovery.
  • the second resource is a resource configured by the access network device for sidechain communication or sidechain discovery.
  • the second terminal may select a part of resources from the second resources as the first resource corresponding to the first terminal.
  • the second resource indicated by the first information includes resource #1, resource #2, resource #3, and resource #4, and the second terminal may determine that resource #1 and resource #2 are the first resource.
  • the second terminal may allocate different first resources to different first terminals.
  • the terminal 1 may determine that the first resources corresponding to terminal 2 are resource #1 and resource #2, and the first resources corresponding to terminal 3 are resource #3 and resource #4.
  • the second terminal may allocate the same first resource to different first terminals.
  • the terminal 1 may determine that the first resources corresponding to terminal 2 are resource #1 and resource #2, and the first resources corresponding to terminal 3 are resource #1 and resource #2.
  • the first information is used to indicate a resource (for example, a first resource or a second resource), which may be implemented in the following manner 1 or manner 2.
  • the first information includes configuration parameters of the resource.
  • the configuration parameters of the time domain resource may include a time domain starting position, or a duration, and the like.
  • the configuration parameters of the frequency domain resources may include the starting position of the frequency domain, or the width of the frequency domain, and the like.
  • the first information includes an index of the resource.
  • the second terminal may pre-configure configuration parameters of multiple resources and indexes of multiple resources. Furthermore, the second terminal may determine the configuration parameter of the resource indicated by the first information according to the index of the resource included in the first information.
  • the second terminal receives the first information broadcast by the access network device.
  • the second terminal sends third information to the access network device, where the third information is used to request the first resource. After that, the second terminal receives the first information sent by the access network device.
  • the third information may be RRC signaling, such as SidelinkUEInformation RRC message.
  • the third information may also be a MAC CE, such as a buffer status report (buffer status report, BSR) MAC CE.
  • the second terminal may actively send the third information to the access network device. For example, when the information broadcast by the access network device does not include the second resource or the first resource, the second terminal sends the third information to the access network device.
  • the second terminal may send the third information to the access network device under the trigger of other devices.
  • the second terminal receives the fifth information sent by the access network device or the first terminal, and the fifth information triggers the second terminal to send the third information; after that, the second terminal sends the third information to the access network device.
  • the second terminal sends the second information to the first terminal, so that the first terminal receives the second information sent by the second terminal.
  • the second information is used to indicate the first resource.
  • the second information is used to indicate the first resource, which may be implemented in the following manner 1 or manner 2.
  • the second information includes configuration parameters of the first resource.
  • the second information includes an index of the first resource.
  • the second information may be resource pool configuration information, or the second information may be time domain resource allocation information and/or frequency resource allocation information, which is not limited in this embodiment of the present application.
  • the second information includes part or all of the information elements (information elemen, IE) in the first information or part or all of the fields (also called fields) in the first information.
  • IE information elements
  • the second terminal determines the first resource according to the first information, and then generates second information for indicating the first resource.
  • the second information may be carried in a PC5RRC message, or a PC5-S message, or a PC5 system information block (system information block, SIB), or a Sidelink SIB, or a PC5 master message block (master Information block, MIB), or Sidelink MIB, or discovery message (for example, Relay Discovery Additional Information message), or sidelink MAC CE, or SCI, which is not limited in this embodiment of the present application.
  • a PC5RRC message or a PC5-S message
  • a PC5 system information block system information block
  • SIB system information block
  • Sidelink SIB or a PC5 master message block (master Information block, MIB), or Sidelink MIB
  • discovery message for example, Relay Discovery Additional Information message
  • sidelink MAC CE for example, Relay Discovery Additional Information message
  • the second information may be carried in the discovery message.
  • Discovery messages are messages in the direct discovery process.
  • the discovery message may be the terminal-to-network relay discovery notification message in FIG. 1 , the terminal-to-network relay discovery request message in FIG. 2 , or the terminal-to-network relay discovery response message in FIG. 2 .
  • a unified description is provided, and details are not repeated below.
  • the second information may be carried in the direct communication request message or the direct communication accept message.
  • the second terminal sends the second information to the first terminal on the third resource.
  • the first terminal receives the second information sent by the second terminal on the third resource.
  • the second terminal may pre-configure one or more third resources.
  • the second terminal may determine the third resource according to the indication information delivered by the access network device, where the resource indicated by the indication information includes the third resource.
  • the indication information and the first information may be included in the same message.
  • the first terminal may send response information to the second terminal, where the response information is used to respond to the second information.
  • the second terminal may receive the response information sent by the first terminal.
  • the resource for transmitting the response information may be the resource that the first terminal receives the second information, or the resource that is preconfigured for transmitting the response information.
  • the second terminal should send the second information multiple times.
  • the second terminal sends the second information to the first terminal, which can be implemented in any one of the following implementation manners:
  • Implementation Mode 1 The second terminal periodically sends the second information on the third resource.
  • time interval for sending the second information twice may be determined by the second terminal, or may be specified by a communication protocol.
  • Implementation Mode 2 The second terminal sends the second information in a polling manner on multiple third resources.
  • the second terminal acquires the third resource #1, the third resource #2, and the third resource #3. After that, the second terminal sends the second information using the third resource #1 at time 1, sends the second information using the third resource #2 at time 2, and sends the second information using the third resource #3 at time 3.
  • Implementation Mode 3 The second terminal sends the second information on the third resource. After sending the second information, the second terminal sets a timer. When the timer expires, the second terminal resends the second information.
  • the second terminal may cancel the timer.
  • the first terminal determines the first resource according to the second information.
  • the first terminal determines the configuration parameter of the first resource according to the second information. Furthermore, the first terminal determines the first resource according to the configuration parameter of the first resource.
  • the second terminal when the first terminal does not have the function of communicating with the access network device, the second terminal obtains the first resource from the access network device, and the first resource is used for the direct communication of the first terminal. communication/direct discovery/side chain communication/side chain discovery; after that, the second terminal sends second information to the first terminal, so that the first terminal can obtain the configuration of the access network equipment for direct communication/direct discovery/side chain Resources for chain communication/sidechain discovery.
  • the first terminal uses the resources configured by the access network device to perform direct communication/direct discovery/sidechain communication/sidechain discovery to avoid affecting the normal operation of other terminals. communication.
  • the second terminal should perform step S401 or S402 under the condition that the first preset condition is satisfied.
  • the first preset condition includes one or a combination of the following:
  • Condition 1-1 The second terminal executes the direct discovery process.
  • condition 1-1 may be specifically implemented as: when the second terminal sends a discovery message; or, the second terminal has sent a discovery message; or, the second terminal is about to send a discovery message; or, the second terminal monitors the discovery message message; when the second terminal sends the sidechain discovery; or, the second terminal has sent the sidechain discovery; or, the second terminal is about to send the sidechain discovery; or, the second terminal monitors the sidechain discovery.
  • the discovery message sent by the second terminal may be: a discovery message sent by the second terminal as a Discoverer UE, or a request message.
  • the discovery message monitored by the second terminal may be: a discovery message or an announcement message sent by the Announcing UE; or, a discovery message or a request message sent by the Discoverer UE.
  • Condition 1-2 The wireless channel quality of the target cell measured by the second terminal is greater than or equal to the first threshold.
  • the target cell is a camping cell of the second terminal or a serving cell of the second terminal.
  • the camping cell of the second terminal refers to a cell selected by the second terminal, but the second terminal has not established a connection with the cell.
  • the serving cell of the second terminal refers to a cell that establishes a connection with the second terminal and provides services for the second terminal.
  • the strength of the received signal may reflect the wireless channel quality.
  • the wireless channel quality may be Reference Signal Receiving Power (RSRP) or Reference Signal Receiving Quality (RSRQ).
  • the first threshold may be set by the second terminal or specified by a communication protocol.
  • the first threshold when the radio channel quality of the target cell is the received power of the reference signal, the first threshold may be set to 50dbm.
  • the second terminal receives the fifth information sent by the access network device or the first terminal.
  • the fifth information is used to instruct the second terminal to acquire the first resource; or, the fifth information is used to instruct the second terminal to send the second information; or, the fifth information is used to instruct to request the resource.
  • the first preset condition includes: A combination of one or more of the following:
  • Condition 1-1 The second terminal executes the direct discovery process.
  • Condition 1-2 The wireless channel quality of the target cell measured by the second terminal is greater than or equal to the first threshold.
  • the second terminal receives the fifth information sent by the access network device or the first terminal.
  • the first preset condition includes: A combination of one or more of the following:
  • Condition 1-2 The wireless channel quality of the target cell measured by the second terminal is greater than or equal to the first threshold.
  • the second terminal receives the fifth information sent by the access network device or the first terminal.
  • the second terminal is to establish a direct communication connection with the first terminal.
  • conditions 1-4 may be specifically implemented as: when the second terminal sends the direct communication request message to the first terminal; or, after the second terminal sends the direct communication request message to the first terminal.
  • the first preset condition includes a combination of the following items, which may mean that the first preset condition can be obtained by combining the foregoing multiple sub-conditions.
  • the second terminal obtains the first preset condition according to the first information. first resource. If any one of the sub-conditions is not satisfied, the second terminal does not acquire the first resource.
  • the first preset condition may be a combination of condition 1-1 and condition 1-2.
  • the second terminal acquires the first resource according to the first information.
  • the second terminal does not acquire the first resource.
  • satisfying any one of the first preset conditions is equivalent to satisfying the first preset condition.
  • the method may further include step S404 after step S403 .
  • the second terminal stops sending the second information.
  • the second terminal stops sending the second information.
  • the second preset condition includes one or more of the following:
  • the second terminal receives the sixth information sent by the access network device or the first terminal.
  • the sixth information is used to instruct the second terminal to stop sending the third information.
  • the sixth information is used to instruct the second terminal to stop acquiring the first resource.
  • the sixth information may be response information of the foregoing second information.
  • the second terminal receives the sixth information sent by the access network device or the first terminal.
  • the second terminal determines that the direct communication connection between the second terminal and the first terminal has been disconnected or released.
  • Condition 2-3 The second terminal receives the first upper layer indication.
  • the first upper layer indication is used to instruct the second terminal to release the direct communication connection.
  • the second terminal receives the second upper layer indication.
  • the second upper layer indication is used to instruct the second terminal to stop performing the direct communication service.
  • the second terminal receives the indication of the third higher layer.
  • the third upper layer indication is used to instruct the second terminal to stop performing the direct discovery service.
  • the second preset condition includes one or more of the following:
  • the second terminal receives the sixth information sent by the access network device or the first terminal.
  • the sixth information is used to instruct the second terminal to stop sending the third information.
  • the sixth information is used to instruct the second terminal to stop acquiring the first resource.
  • the second terminal determines that the direct communication connection between the second terminal and the first terminal has been disconnected.
  • Condition 2-3 The second terminal receives the first upper layer indication.
  • the first upper layer indication is used to instruct the second terminal to release the direct communication connection.
  • the second terminal receives the second upper layer indication.
  • the second upper layer indication is used to instruct the second terminal to stop performing the direct communication service.
  • the second terminal receives the indication of the third higher layer.
  • the third upper layer indication is used to instruct the second terminal to stop performing the direct discovery service.
  • Condition 2-6 The second terminal receives the discovery message sent by the first terminal.
  • the resource used by the first terminal to send the discovery message may be the first resource.
  • Condition 2-7 The second terminal receives the direct communication request message sent by the first terminal.
  • Condition 2-8 The second terminal receives the side chain communication sent by the first terminal.
  • the above-mentioned high-level indication may be an indication of a PC5signaling layer, or an indication of a PC5RRC layer, or an indication of an application layer, which is not limited in this embodiment of the present application.
  • the second terminal may stop sending the second information in an appropriate scenario, thereby reducing signaling overhead.
  • the first terminal when the first resource is used for direct discovery of the first terminal, the first terminal sends the direct discovery signaling or data on the first resource, and the second terminal receives the direct discovery signaling on the first resource. command or data; or, the second terminal sends directly discovered signaling or data on the first resource, and the first terminal receives the directly discovered signaling or data on the first resource.
  • the first terminal when the first resource is used for sidechain discovery of the first terminal, the first terminal sends the sidechain discovery on the first resource, and the second terminal receives the sidechain discovery on the first resource.
  • the second terminal sends the sidechain discovery on the first resource, and the first terminal receives the sidechain discovery on the first resource.
  • the embodiment shown in FIG. 8 or FIG. 9 may be executed between the first terminal and the second terminal.
  • a communication method provided by an embodiment of the present application includes the following steps:
  • the first terminal sends a discovery notification message on the first resource.
  • the discovery notification message is used to inform other terminals of the existence of the first terminal.
  • the discovery announcement message enables the first terminal to announce the availability of the relay connection service provided by the first terminal to other terminals.
  • the discovery announcement message can also enable other terminals to measure the signal strength of the discovery message for other terminals to perform relay selection or relay reselection.
  • the signal strength of the discovery message may specifically be the received power of the reference signal associated with the channel used for transmitting the discovery message.
  • the second terminal monitors the discovery notification message on the first resource.
  • the first terminal and the second terminal use the first resource to perform a direct discovery process, which can avoid affecting the normal communication of other terminals. .
  • the first terminal sends a discovery request message on the first resource, so that the second terminal receives the discovery request message on the first resource.
  • the second terminal sends a discovery response message on the first resource, so that the first terminal receives the discovery response message on the first resource.
  • the first terminal and the second terminal use the first resource to perform a direct discovery process, which can avoid affecting the normal communication of other terminals .
  • the first terminal when the first resource is used for side chain communication of the first terminal, the first terminal sends side chain communication on the first resource, and the second terminal receives side chain communication on the first resource;
  • the two terminals send sidechain communications on the first resource, and the first terminal receives sidechain communications on the first resource.
  • a communication method provided by an embodiment of the present application includes the following steps:
  • the first terminal sends a direct communication request message to the second terminal on the first resource, so that the second terminal receives the direct communication request message sent by the first terminal on the first resource.
  • the direct communication request message is used to request the establishment of a direct communication connection.
  • the second terminal sends a direct communication accept message to the first terminal on the first resource, so that the first terminal receives the direct communication accept message sent by the second terminal on the first resource.
  • the first terminal and the second terminal use the first resource to perform a direct communication process, which can avoid affecting the normal communication of other terminals .
  • the fourth information may adopt any one of the following designs:
  • the fourth information is used to indicate that the wireless channel quality of the target cell measured by the second terminal is smaller than the second threshold. Or, when the fourth information does not include the first information element, the fourth information is used to indicate that the wireless channel quality of the target cell measured by the second terminal is greater than or equal to the second threshold.
  • Design 3 When the fourth information includes the first information element whose value is the first enumeration value, the fourth information is used to indicate that the wireless channel quality of the target cell measured by the second terminal is greater than or equal to the second threshold. Or, when the fourth information includes the first information element whose value is the second enumeration value, the fourth information is used to indicate that the wireless channel quality of the target cell measured by the second terminal is less than the second threshold.
  • the fourth information can be carried in the PC5 RRC message, or the PC5-S message, or the PC5 system information block (system information block, SIB), or the sidelink SIB, or the PC5 master message block (master Information block, MIB), Or sidelink MIB, or synchronization information, or media access control (media access control, MAC) control element (control element, CE), or sidelink control information (sidelink control information, SCI), or discovery message, etc.
  • this application implements The example does not limit this.
  • the first terminal determines that it is out of the coverage of the target cell.
  • the fourth information is used to indicate that the target terminal is within the coverage of the target cell
  • the first terminal determines that it is within the coverage of the target cell.
  • the communication device may be divided into functional units according to the foregoing method examples.
  • each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and other division methods may be used in actual implementation.
  • the processing unit 1202 may be configured to support the second terminal to perform generating information (eg, generating second information), parsing information (eg, parsing the first information), and/or or other procedures for the protocols described herein.
  • the communication unit 1203 can be used to support the second terminal to perform steps S401-S402 in FIG. 6 , step S404 in FIG. 7 , step S502 in FIG. 8 , steps S601-S602 in FIG. 9 , steps S701-S703 in FIG. 10 , step S802 in FIG. 11 , and/or other processes for the scheme described herein.
  • the storage unit 1201 may be a memory.
  • the computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, optical fiber, Digital Subscriber Line, DSL) or wireless (eg infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc., that includes one or more available media integrated.
  • the available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, Digital Video Disc (DVD)), or semiconductor media (eg, Solid State Disk (SSD)) Wait.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple devices. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each functional unit may exist independently, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the present application can be implemented by means of software plus necessary general-purpose hardware, and of course hardware can also be used, but in many cases the former is a better implementation manner .
  • the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art.
  • the computer software products are stored in a readable storage medium, such as a floppy disk of a computer. , a hard disk or an optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application.
  • Embodiment 1 A resource configuration method, wherein the method includes:
  • the second terminal receives first information sent by the access network device, where the first information is used to indicate a first resource, and the first resource is used for the first terminal to perform sidechain communication, or the first resource is used for The first terminal performs side chain discovery;
  • the second terminal performs a direct discovery process
  • the wireless channel quality of the target cell measured by the two terminals is greater than or equal to a first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or,
  • the second terminal receives fifth information sent by the access network device or the first terminal, where the fifth information is used to instruct the second terminal to send the second information.
  • the wireless channel quality of the target cell measured by the second terminal is greater than or equal to a first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or,
  • the second terminal receives fifth information sent by the access network device or the first terminal, where the fifth information is used to instruct the second terminal to send the second information.
  • Embodiment 6 The method according to any one of Embodiments 1 to 3, wherein before the second terminal receives the first information sent by the access network device, the method further includes:
  • the second terminal and the first terminal perform a direct discovery process.
  • Embodiment 7 The method according to Embodiment 6, wherein, in the case that the first resource is used for the first terminal to perform sidechain communication, the first preset condition includes one or more of the following:
  • Embodiment 9 The method according to any one of Embodiments 1 to 8, wherein the method further comprises:
  • Embodiment 10 The method according to Embodiment 9, wherein, when the first resource is used for the first terminal to perform side chain communication, the second preset condition includes one or more of the following :
  • the second terminal determines that the direct communication connection between the second terminal and the first terminal has been disconnected; or,
  • the second terminal receives a first high-level indication, where the first high-level indication is used to instruct the second terminal to release the direct communication connection; or,
  • the second terminal receives a third-layer instruction, where the third-layer instruction is used to instruct the second terminal to stop performing the direct discovery service.
  • Embodiment 11 The method according to Embodiment 9, wherein, when the first resource is used for the first terminal to perform sidechain discovery, the second preset condition includes one or more of the following:
  • the second terminal receives sixth information sent by the access network device or the first terminal, where the sixth information is used to instruct the second terminal to stop sending the third information to, or the first terminal.
  • Six information is used to instruct the second terminal to stop acquiring the first resource; or,
  • the second terminal determines that the direct communication connection between the second terminal and the first terminal has been disconnected; or,
  • the second terminal receives a second high-level instruction, where the second high-level instruction is used to instruct the second terminal to stop performing the direct communication service; or,
  • the second terminal receives a third high-level instruction, where the third high-level instruction is used to instruct the second terminal to stop performing the direct discovery service; or,
  • Embodiment 12 The method according to any one of Embodiments 1 to 11, wherein the method further comprises:
  • the second terminal sends fourth information to the first terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within the coverage of a target cell, and the target cell is the target cell. the camping cell of the second terminal or the serving cell of the second terminal.
  • Embodiment 13 The method according to any one of Embodiments 1 to 12, wherein when the first resource is used for the first terminal to perform sidechain communication, the method further includes:
  • the first terminal sends and/or receives sidechain communications on the first resource.
  • Embodiment 14 The method according to any one of Embodiments 1 to 12, wherein when the first resource is used for the first terminal to perform sidechain discovery, the method further includes:
  • the first terminal sends and/or receives sidechain discovery on the first resource.
  • Embodiment 15 a resource configuration method, wherein the method includes:
  • the first terminal determines the first resource according to the second information.
  • Embodiment 16 The method according to Embodiment 16, wherein the receiving, by the first terminal, the second information sent by the second terminal includes:
  • the first terminal receives the second information sent by the second terminal on a third resource, where the third resource is a subset of resources preconfigured by the first terminal for receiving the second information.
  • Embodiment 17 The method according to Embodiment 15 or 16, wherein the method further comprises:
  • the first terminal sends fifth information to the second terminal, where the fifth information is used to instruct the second terminal to send the second information.
  • Embodiment 18 The method of any one of Embodiments 15 to 17, wherein the method further comprises:
  • the first terminal sends sixth information to the second terminal, where the sixth information is used to instruct the second terminal to stop sending the second information.
  • Embodiment 19 The method of any one of Embodiments 15 to 18, wherein the method further comprises:
  • the first terminal receives fourth information sent by the second terminal, where the fourth information is used to indicate whether the first terminal or the second terminal is within the coverage of a target cell, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal;
  • the first terminal determines whether the first terminal is within the coverage of the target cell according to the fourth information.
  • Embodiment 20 The method according to any one of Embodiments 15 to 19, wherein when the first resource is used for the first terminal to perform sidechain communication, the method further includes:
  • Embodiment 21 The method according to any one of Embodiments 15 to 19, wherein when the first resource is used for the first terminal to perform sidechain discovery, the method further includes:
  • the first terminal sends and/or receives sidechain discovery on the first resource.
  • Embodiment 22 a resource configuration method, wherein the method comprises:
  • the access network device generates first information, where the first information includes a first resource, and the first resource is used for the first terminal to perform side chain communication, or the first resource is used for the first terminal to perform side chain communication chain discovery;
  • the access network device sends the first information to the second terminal.
  • Embodiment 23 The method according to Embodiment 22, wherein the method further comprises:
  • the access network device receives third information sent by the second terminal, where the third information is used to request the first resource.
  • Embodiment 24 The method according to Embodiment 22 or 23, wherein the first information is used to indicate the first resource, including:
  • the first information is used to indicate a second resource, and the second resource includes the first resource.
  • Embodiment 25 a communication device, comprising:
  • a communication unit configured to receive first information sent by an access network device, where the first information is used to indicate a first resource, and the first resource is used for the first terminal to perform side chain communication, or the first resource for the first terminal to perform side chain discovery;
  • the communication unit is further configured to send second information to the first terminal when the first preset condition is satisfied, where the second information is used to indicate the first resource.
  • Embodiment 26 The communication apparatus according to Embodiment 25, wherein the first information is used to indicate the first resource, comprising:
  • the first information is used to indicate a second resource, and the second resource includes the first resource.
  • Embodiment 27 The communication apparatus according to Embodiment 25 or 26, wherein the communication unit further sends third information to the access network device, where the third information is used to request the first resource;
  • Embodiment 28 The communication apparatus according to any one of Embodiments 25 to 27, wherein, when the first resource is used for the first terminal to perform sidechain discovery, the first preset condition includes one of the following: Item or multiple items:
  • the second terminal performs a direct discovery process
  • the wireless channel quality of the target cell measured by the two terminals is greater than or equal to a first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or,
  • the second terminal receives fifth information sent by the access network device or the first terminal, where the fifth information is used to instruct the second terminal to send the second information.
  • Embodiment 29 The communication apparatus according to any one of Embodiments 25 to 27, wherein, when the first resource is used for the first terminal to perform side chain communication, the first preset condition includes one of the following: Item or multiple items:
  • the second terminal performs a direct discovery process
  • the wireless channel quality of the target cell measured by the second terminal is greater than or equal to a first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or,
  • the second terminal receives fifth information sent by the access network device or the first terminal, where the fifth information is used to instruct the second terminal to send the second information.
  • Embodiment 30 The communication apparatus according to any one of Embodiments 25 to 28, wherein the processing unit is further configured to perform a direct discovery process with the first terminal.
  • Embodiment 31 The communication apparatus according to Embodiment 30, wherein, when the first resource is used for the first terminal to perform sidechain communication, the first preset condition includes one or more of the following:
  • the wireless channel quality of the target cell measured by the two terminals is greater than or equal to a first threshold, and the target cell is the camping cell of the second terminal or the serving cell of the second terminal; or,
  • the second terminal receives fifth information sent by the access network device or the first terminal, where the fifth information is used to instruct the second terminal to send the second information, or the first terminal The fifth information is used to instruct the second terminal to acquire the first resource.
  • Embodiment 32 The communication apparatus according to any one of Embodiments 25 to 31, wherein the communication unit is specifically configured to send the second information to the first terminal on a third resource, and the first The three resources are a subset of resources preconfigured by the first terminal for receiving the second information.
  • Embodiment 33 The communication apparatus according to any one of Embodiments 25 to 32, wherein the communication unit is further configured to stop sending the second information when a second preset condition is satisfied.
  • Embodiment 34 The communication apparatus according to Embodiment 33, wherein, when the first resource is used for the first terminal to perform side chain communication, the second preset condition includes one or more of the following: item:
  • the second terminal receives sixth information sent by the access network device or the first terminal, where the sixth information is used to instruct the second terminal to stop sending the third information to, or the first terminal.
  • Six information is used to instruct the second terminal to stop acquiring the first resource; or,
  • the second terminal determines that the direct communication connection between the second terminal and the first terminal has been disconnected; or,
  • the second terminal receives a first high-level indication, where the first high-level indication is used to instruct the second terminal to release the direct communication connection; or,
  • the second terminal receives a second high-level instruction, where the second high-level instruction is used to instruct the second terminal to stop performing the direct communication service; or,
  • the second terminal receives a third upper layer instruction, where the third higher layer instruction is used to instruct the second terminal to stop performing the direct discovery service.
  • Embodiment 35 The communication apparatus according to Embodiment 33, wherein, when the first resource is used for the first terminal to perform side chain discovery, the second preset condition includes one or more of the following:
  • the second terminal receives sixth information sent by the access network device or the first terminal, where the sixth information is used to instruct the second terminal to stop sending the third information to, or the first terminal.
  • Six information is used to instruct the second terminal to stop acquiring the first resource; or,
  • the second terminal determines that the direct communication connection between the second terminal and the first terminal has been disconnected; or,
  • the second terminal receives a first high-level indication, where the first high-level indication is used to instruct the second terminal to release the direct communication connection; or,
  • the second terminal receives a second high-level instruction, where the second high-level instruction is used to instruct the second terminal to stop performing the direct communication service; or,
  • the second terminal receives a third high-level instruction, where the third high-level instruction is used to instruct the second terminal to stop performing the direct discovery service; or,
  • the second terminal receives the discovery message sent by the first terminal.
  • Embodiment 36 The communication device according to any one of Embodiments 25 to 35, wherein the communication unit is further configured to send fourth information to the first terminal, where the fourth information is used to indicate Whether the first terminal or the second terminal is within the coverage of a target cell, where the target cell is a camping cell of the second terminal or a serving cell of the second terminal.
  • Embodiment 37 The communication apparatus according to any one of Embodiments 25 to 36, wherein when the first resource is used for the first terminal to perform side chain communication, the communication unit is further configured to perform side chain communication on the first terminal. Send and/or receive sidechain communications on a resource.
  • Embodiment 38 The communication apparatus according to any one of Embodiments 25 to 36, wherein when the first resource is used for the first terminal to perform sidechain discovery, the communication unit is further configured to perform the side chain discovery in the first terminal. Send and/or receive sidechain discovery on a resource.
  • Embodiment 39 a communication device, wherein the communication device comprises:
  • a communication unit configured to receive second information sent by a second terminal, where the second information is used to indicate a first resource, and the first resource is used for the first terminal to perform side chain communication, or the first the resource is used for the first terminal to perform side chain discovery;
  • a processing unit configured to determine the first resource according to the second information.
  • Embodiment 40 The communication apparatus according to Embodiment 39, wherein the communication unit is specifically configured to receive, on a third resource, the second information sent by the second terminal, and the third resource is the first terminal A subset of resources are preconfigured for receiving the second information.
  • Embodiment 41 The communication apparatus according to Embodiment 39 or 40, wherein the communication unit is further configured to send fifth information to the second terminal, where the fifth information is used to indicate the second terminal The second information is sent.
  • Embodiment 42 The communication apparatus according to any one of Embodiments 39 to 41, wherein the communication unit is further configured to send sixth information to the second terminal, where the sixth information is used to indicate the The second terminal stops sending the second information.
  • Embodiment 43 The communication apparatus according to any one of Embodiments 39 to 42, wherein the communication unit is further configured to receive fourth information sent by the second terminal, where the fourth information is used to indicate the whether the first terminal or the second terminal is within the coverage of a target cell, where the target cell is a camping cell of the second terminal or a serving cell of the second terminal.
  • the processing unit is further configured to determine, according to the fourth information, whether the first terminal is within the coverage of the target cell.
  • Embodiment 44 The communication apparatus according to any one of Embodiments 39 to 43, wherein when the first resource is used for the first terminal to perform side chain communication, the communication unit is further configured to perform side chain communication in the first terminal. Send and/or receive sidechain communications on a resource.
  • Embodiment 45 The communication apparatus according to any one of Embodiments 39 to 43, wherein when the first resource is used for the first terminal to perform side chain discovery, the communication unit is further configured to perform a side chain discovery in the first terminal. Send and/or receive sidechain discovery on a resource.
  • Embodiment 46 a communication device, wherein the communication device comprises:
  • a processing unit configured to generate first information, where the first information includes a first resource, and the first resource is used for the first terminal to perform side chain communication, or the first resource is used for the first terminal to perform side chain communication sidechain discovery;
  • a communication unit configured to send the first information to the second terminal.
  • Embodiment 47 The communication apparatus according to Embodiment 46, wherein the communication unit is further configured to receive third information sent by the second terminal, where the third information is used to request the first resource.
  • Embodiment 48 The communication apparatus according to Embodiment 46 or 47, wherein the first information is used to indicate the first resource, comprising:
  • the first information is used to indicate a second resource, and the second resource includes the first resource.
  • Embodiment 49 a communication device, wherein the communication device has a processor and a communication interface, the processor is configured to perform the processing operations in the methods involved in any one of Embodiments 1 to 24, and the communication interface uses The communication operation in the method involved in any one of Embodiments 1 to 24 is performed.
  • Embodiment 50 A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, which, when executed on a computer, cause the computer to execute any one of Embodiments 1 to 24. method described.
  • Embodiment 51 A computer program product, wherein the computer program product comprises computer instructions that, when executed on a computer, cause the computer to perform the method of any one of Embodiments 1 to 24.
  • Embodiment 52 A chip, wherein the chip includes a processing unit and a transceiver pin; the processing unit is configured to perform the processing operation in the method according to any one of Embodiments 1 to 24, and the transceiver The pin is used to perform the communication operation in the method involved in any one of Embodiments 1 to 24.

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

Abstract

L'invention concerne un procédé et un appareil permettant de fournir des informations auxiliaires, qui se rapportent au domaine technique de la communication, et sont utilisés pour configurer des ressources de chaîne latérale pour un terminal. Le procédé comprend les étapes suivantes : un second terminal reçoit des premières informations envoyées par un dispositif de réseau d'accès, les premières informations servant à indiquer une première ressource, la première ressource étant utilisée par un premier terminal pour effectuer une communication par chaîne latérale ou la première ressource étant utilisée par le premier terminal pour effectuer une découverte de chaîne latérale ; et le second terminal envoie des secondes informations au premier terminal, les secondes informations servant à indiquer la première ressource. La présente demande est appropriée pour le processus de configuration de la ressource de chaîne latérale.
PCT/CN2021/102805 2020-06-30 2021-06-28 Procédé et appareil de fourniture d'informations auxiliaires WO2022001969A1 (fr)

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