WO2020043197A1 - 一种数据传输方法和无线接入网设备及终端设备 - Google Patents

一种数据传输方法和无线接入网设备及终端设备 Download PDF

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Publication number
WO2020043197A1
WO2020043197A1 PCT/CN2019/103777 CN2019103777W WO2020043197A1 WO 2020043197 A1 WO2020043197 A1 WO 2020043197A1 CN 2019103777 W CN2019103777 W CN 2019103777W WO 2020043197 A1 WO2020043197 A1 WO 2020043197A1
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Prior art keywords
access network
radio access
network device
terminal device
information
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PCT/CN2019/103777
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English (en)
French (fr)
Inventor
卓义斌
王君
彭文杰
戴明增
范强
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华为技术有限公司
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Priority to JP2021510951A priority Critical patent/JP7193620B2/ja
Priority to EP19855852.0A priority patent/EP3843457A4/en
Publication of WO2020043197A1 publication Critical patent/WO2020043197A1/zh
Priority to US17/187,334 priority patent/US20210185578A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/23—Manipulation of direct-mode connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/03—Reselecting a link using a direct mode connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/002—Mutual synchronization
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/46—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for vehicle-to-vehicle communication [V2V]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a data transmission method, a radio access network device, and a terminal device.
  • V2X Vehicle networking
  • V2X Vehicle networking
  • the side link refers to a communication link for direct communication between vehicles, and the air interface for direct communication between vehicles is defined as the PC5 port.
  • V-UE vehicle user equipment
  • the embodiments of the present application provide a data transmission method, a radio access network device, and a terminal device, which are used to reduce the transmission delay after the terminal device is switched, improve the data transmission reliability of the terminal device during the switching process, and improve communication efficiency. .
  • an embodiment of the present application provides a data transmission method, which is applied to a first radio access network device, and includes: the first radio access network device receives a first terminal device sent by the first terminal device Service model information; the first radio access network device sends service model information of the first terminal device to a second radio access network device; the first radio access network device receives the second radio access First resource configuration information sent by a network device, where the first resource configuration information includes: transmission resources required by the first terminal device to transmit data on a side link SL during a handover process, where the handover process refers to It is the first terminal device switching from the first radio access network device to the second radio access network device, and the side link is between the first terminal device and the second terminal device Communication link; the first radio access network device sends a configuration message to the first terminal device; wherein the configuration message includes: the first resource configuration information; or the configuration message packet
  • the second resource configuration information generated by the first radio access network device based on the first resource configuration information, and the second resource configuration information includes: the first terminal
  • the first radio access network device may send the service model information of the first terminal device to the second radio access network device, so that the second radio access network device may be based on the service of the first terminal device.
  • the model information determines transmission resources required for the first terminal device to transmit data on the SL during the handover process
  • the second radio access network device sends the first resource configuration information carrying the transmission resource to the first radio access network device
  • the first radio access network device can send a configuration message to the first terminal device, so that the first terminal device can obtain the transmission resource determined by the second radio access network device through the configuration message, and the first terminal device uses the transmission resource. Transmitting data to the second terminal device.
  • the second radio access network device is used to determine the transmission resources required for the first terminal device to transmit data on the SL during the handover process according to the service model information of the first terminal device, so that the first terminal device can use This transmission resource performs data transmission with the second terminal device, thereby reducing the transmission delay after the terminal device is switched, improving the data transmission reliability of the terminal device during the switching process, and improving communication efficiency.
  • the method further includes any one or more of the following operations: the first radio access network device sends the first radio access network device to the second radio access network device Frequency point information supported by a terminal device; or the first radio access network device sends a channel busy ratio CBR measurement result generated by the first terminal device to the second radio access network device; or, the The first radio access network device sends the location information of the first terminal device to the second radio access network device; or the first radio access network device sends to the second radio access network device Inter-station synchronization information, which is used to indicate system frame number SFN offset information between the first radio access network device and the second radio access network device; or The radio access network device sends network standard request information to the second radio access network device, and the network standard request information is used to request the second radio access network device to a network standard corresponding to the transmission resource.
  • the frequency point information supported by the first terminal device may be reported to the first radio access network device through RRC signaling.
  • the frequency point information supported by the first terminal device may be transmitted through the side in the RRC.
  • the uplink terminal information is reported to the first radio access network device.
  • the first terminal device may also generate a CBR measurement result.
  • the CBR measurement result is a result obtained after the first terminal device monitors the busyness of the time-frequency resource, and may assist the second radio access network device to configure transmission resources.
  • the location information of the first terminal device refers to the current geographic location of the first terminal device.
  • the location information of the first terminal device is used by the second radio access network device to allocate transmission resources for the first terminal device.
  • the inter-station synchronization information is used to indicate the system frame number offset information between the first radio access network device and the second radio access network device, that is, the inter-station synchronization information is used to indicate the Synchronization time error offset, the first terminal device can actively send inter-station synchronization information to the first radio access network device.
  • the first terminal device may also generate network standard request information, and send the network standard request information to the first radio access network device, and the network standard request information is used to request the second radio access network device for the network standard corresponding to the transmission resource.
  • the second radio access network device may also indicate a network standard corresponding to the transmission resource determined by the first terminal device.
  • the second radio access network device indicates which network system the transmission resource corresponds to.
  • the first radio access network device performs RRC reconfiguration on the first terminal device, it also needs to further indicate which system configuration transmission resource is used. So that when the first terminal device receives the transmission resource, it uses the corresponding transmission parameters for adaptation.
  • any one or more of the following information is carried in the handover request: the service model information, frequency point information supported by the first terminal device, and CBR measurement As a result, the location information of the first terminal device, the inter-station synchronization information, and the network standard request information; wherein the handover request is transmitted from the first radio access network device to the second radio access Network equipment.
  • the first terminal device sends a measurement report to the first radio access network device to trigger a handover, and the first radio access network device decides to start the handover process according to the measurement report reported by the first terminal device.
  • the first radio access network device sends a handover request to the second radio access network device.
  • the handover request carries any one or more of the following information: the service model information, and the first terminal device. Supported frequency information, CBR measurement results, location information of the first terminal device, inter-station synchronization information, and network standard request information.
  • the first radio access network device to send any one or more of the following information to the second radio access network device to be carried in the handover request: service model information of the first terminal device, and the first terminal Frequency point information supported by the device, CBR measurement results, location information of the first terminal device, inter-station synchronization information, and network standard request information.
  • the method further includes: receiving, by the first radio access network device, network system indication information sent by the second radio access network device, and the network system indication The information is used to indicate a network standard corresponding to the transmission resource; or the first radio access network device receives third resource configuration information sent by the second radio access network device, and the third resource configuration information includes At least one of the following information: carrier aggregation CA configuration information and multiplexing configuration information.
  • the second radio access network device may further indicate a network standard corresponding to the transmission resource determined by the first terminal device. For example, when the second radio access network device sends a HOACK to the first radio access device, and the HOACK carries resource configuration information of the target cell, it needs to further indicate whether the transmission resource is used in the LTE system or the NR system.
  • the second radio access network device may send network standard indication information to the first radio access network device, so the first radio access network device may obtain the network standard indication information from the second radio access network device.
  • the second radio access network device sends third resource configuration information to the first radio access network device, where the third resource configuration information includes CA configuration information and multiplexing configuration information, so that the first radio access network device can receive
  • the second radio access network device obtains the third resource configuration information, and the first radio access network device can obtain the CA configuration information and the multiplexed configuration information generated by the second radio network device.
  • an embodiment of the present application provides a data transmission method, including: a second radio access network device receiving service model information of a first terminal device sent by the first radio access network device; the second radio access The network device determines transmission resources required by the first terminal device to transmit data on the side link SL during a handover process according to the service model information of the first terminal device.
  • the handover process refers to the first terminal device.
  • a terminal device switches from the first radio access network device to the second radio access network device, and the side link is a communication link between the first terminal device and the second terminal device; Sending, by the second radio access network device, first resource configuration information to the first radio access network device, where the first resource configuration information includes the transmission resource.
  • the second radio access network device may determine the transmission resources required for the first terminal device to transmit data on the SL during the handover process according to the service model information of the first terminal device, and the second radio access network The device sends the first resource configuration information carrying the transmission resource to the first radio access network device.
  • the first radio access network device can send a configuration message to the first terminal device, so that the first terminal device can obtain the configuration message through the configuration message.
  • the first terminal device uses the transmission resource to transmit data to the second terminal device.
  • the second radio access network device is used to determine the transmission resources required for the first terminal device to transmit data on the SL during the handover process according to the service model information of the first terminal device, so that the first terminal device can use This transmission resource performs data transmission with the second terminal device, thereby reducing the transmission delay after the terminal device is switched, improving the data transmission reliability of the terminal device during the switching process, and improving communication efficiency.
  • the method further includes: receiving, by the second radio access network device, a frequency point supported by the first terminal device sent by the first radio access network device Information; or, the second radio access network device receives a channel busy ratio CBR measurement result generated by the first terminal device and sent by the first radio access network device; or the second radio access network
  • the device receives the location information of the first terminal device sent by the first radio access network device; or the second radio access network device receives inter-station synchronization information sent by the first radio access network device
  • the inter-station synchronization information is used to indicate system frame number SFN offset information between the first radio access network device and the second radio access network device; or, the second radio access network
  • the device receives the network standard request information sent by the first radio access network device, and the network standard request information is used to request the second radio access network device to a network standard corresponding to the transmission resource.
  • the method further includes: the second radio access network device configuring a carrier for the first terminal device according to the frequency point information supported by the first terminal device Or the second radio access network device determines the location of the transmission resource for the first terminal device according to the CBR measurement result; or the second radio access network device determines the location of the transmission resource for the first terminal device;
  • the location information of the device is that the first terminal device determines the resource location corresponding to the area where the first terminal device is located; or the second radio access network device corrects the time of the transmission resource according to the inter-station synchronization information. Domain location.
  • the second radio access network device may obtain frequency point information supported by the first terminal device, the second radio access network device parses the frequency point information supported by the first terminal device, and then determines The terminal equipment data transmission corresponds to the carrier information.
  • the second radio access network device can obtain the CBR measurement result, and the second radio access network device determines the idle status of the time-frequency resource by analyzing the CBR measurement result, so that the data can be determined for the first terminal device according to the CBR measurement result. Transmission of corresponding time-frequency resources.
  • the second radio access network device may obtain the location information of the first terminal device, and then determine the time-frequency resource corresponding to the geographic area where the first terminal device is located.
  • the second radio access network device may obtain inter-station synchronization information, and then correct the time domain position of the transmission resource according to the inter-station synchronization information. Without limitation, in other embodiments of the present application, the second radio access network device may not correct the time domain position of the transmission resource, but the first radio access network device may perform transmission based on the inter-station synchronization information. The time domain position of the resource is corrected.
  • the second radio access network device may obtain the network standard request information through the first radio access network device, and the second radio access network device may further indicate the corresponding network standard for the transmission resource determined by the first terminal device.
  • the method further includes: the second radio access network device sends network standard indication information to the first radio access network device, and the network standard indication information For indicating a network standard corresponding to the transmission resource; or the second radio access network device sends third resource configuration information to the first radio access network device, where the third resource configuration information includes the following information At least one of the following: carrier aggregation CA configuration information and multiplexing configuration information.
  • the second radio access network device may obtain the network standard request information, and the second radio access network device may also indicate the network standard corresponding to the transmission resource determined by the first terminal device.
  • the second radio access network device is required to indicate which network standard this transmission resource corresponds to, and the first radio access network device also needs to further indicate what type of transmission resource is configured when performing RRC reconfiguration on the first terminal device. It is used so that when the first terminal device receives the transmission resource, it uses the corresponding transmission parameters for adaptation.
  • the second radio access network device may also generate CA configuration information and duplication configuration information for the first terminal device.
  • the second radio access network device can obtain the frequency point information supported by the first terminal device, and thereby generate the CA configuration information by using the carrier used when configuring the CA according to the frequency point information supported by the first terminal device.
  • the second radio access network device may generate the multiplexing configuration information according to the service reliability requirements of the first terminal device.
  • the second radio access network device may obtain the PPPR generated by the first terminal device.
  • Information, the PPPR information can assist the second radio access network device to determine whether to use multiplexing, such as using multiplexing when the PPPR is lower than a certain value.
  • the second radio access network device sends third resource configuration information to the first radio access network device.
  • the third resource configuration information includes CA configuration information and multiplexing configuration information.
  • an embodiment of the present application provides a data transmission method, including: a first terminal device sending service model information of the first terminal device to a first radio access network device; and the first terminal device receiving the A configuration message sent by the first radio access network device, the configuration message including: first resource configuration information; or the configuration message includes: the first radio access network device generates based on the first resource configuration information
  • the second resource configuration information includes: transmission resources required by the first terminal device to transmit data on a side link SL during a handover process, and the handover process refers to the A first terminal device switches from the first radio access network device to the second radio access network device, and the side link is a communication link between the first terminal device and the second terminal device
  • the second resource configuration information includes: transmission resources required by the first terminal device to transmit data on the side link during the handover process; and the first terminal device enables Said transmission resource data to the second transmission terminal device.
  • the first radio access network device may send the service model information of the first terminal device to the second radio access network device, so that the second radio access network device may be based on the service of the first terminal device.
  • the model information determines transmission resources required for the first terminal device to transmit data on the SL during the handover process
  • the second radio access network device sends the first resource configuration information carrying the transmission resource to the first radio access network device
  • the first radio access network device can send a configuration message to the first terminal device, so that the first terminal device can obtain the transmission resource determined by the second radio access network device through the configuration message, and the first terminal device uses the transmission resource. Transmitting data to the second terminal device.
  • the second radio access network device is used to determine the transmission resources required for the first terminal device to transmit data on the SL during the handover process according to the service model information of the first terminal device, so that the first terminal device can use This transmission resource performs data transmission with the second terminal device, thereby reducing the transmission delay after the terminal device is switched, improving the data transmission reliability of the terminal device during the switching process, and improving communication efficiency.
  • the method further includes any one or more of the following operations: the first terminal device sends the first terminal device to the first radio access network device Supported frequency point information; or the first terminal device sends the CBR measurement result of the channel busy ratio generated by the first terminal device to the first radio access network device; or the first terminal device sends the The first radio access network device sends location information of the first terminal device; or the first terminal device sends inter-site synchronization information to the first radio access network device, and the inter-site synchronization information is used for For indicating the system frame number SFN offset information between the first radio access network device and the second radio access network device; or, the first terminal device sends the first radio access network device to the first radio access network device Sending network standard request information, where the network standard request information is used to request the second radio access network device for a network standard corresponding to the transmission resource.
  • the frequency point information supported by the first terminal device may be reported to the first radio access network device through RRC signaling.
  • the frequency point information supported by the first terminal device may be transmitted through the side in the RRC.
  • the uplink terminal information is reported to the first radio access network device.
  • the first terminal device may also generate a CBR measurement result.
  • the CBR measurement result is a result obtained after the first terminal device monitors the busyness of the time-frequency resource, and may assist the second radio access network device to configure transmission resources.
  • the location information of the first terminal device refers to the current geographic location of the first terminal device.
  • the location information of the first terminal device is used by the second radio access network device to allocate transmission resources for the first terminal device.
  • the inter-station synchronization information is used to indicate the system frame number offset information between the first radio access network device and the second radio access network device, that is, the inter-station synchronization information is used to indicate the Synchronization time error offset, the first terminal device can actively send inter-station synchronization information to the first radio access network device.
  • the first terminal device may also generate network standard request information, and send the network standard request information to the first radio access network device, and the network standard request information is used to request the second radio access network device for the network standard corresponding to the transmission resource.
  • the second radio access network device may also indicate a network standard corresponding to the transmission resource determined by the first terminal device.
  • the second radio access network device indicates which network system the transmission resource corresponds to.
  • the first radio access network device performs RRC reconfiguration on the first terminal device, it also needs to further indicate which system configuration transmission resource is used. So that when the first terminal device receives the transmission resource, it uses the corresponding transmission parameters for adaptation.
  • the method further includes: receiving, by the first terminal device, network system indication information sent by the first radio access network device, where the network system indication information is used for Indicating a network standard corresponding to the transmission resource; or the first terminal device receives third resource configuration information sent by the first radio access network device, and the third resource configuration information includes at least one of the following information Type: carrier aggregation CA configuration information, multiplexing configuration information.
  • the first terminal device sends the network standard request information, and after being forwarded by the first wireless access network device, the second wireless access network device receives the network standard request information, and the second wireless access
  • the network device may also indicate a network standard corresponding to the transmission resource determined by the first terminal device.
  • the first radio access network device performs RRC reconfiguration on the first terminal device, it also needs to further indicate which system the configured transmission resource is used in.
  • the first terminal device can The network standard indication information is received, so that when the first terminal device receives the transmission resource, it uses the corresponding transmission parameter for adaptation.
  • the second radio access network device sends the third resource configuration information to the first radio access network device, and after being forwarded by the first radio access network device, the first terminal device obtains the third resource configuration information and the third resource configuration information Including CA configuration information and multiplexing configuration information, so that the first terminal device determines the CA determined by the second radio access network device by analyzing the CA configuration information, and determines whether to enable multiplexing by analyzing the multiplexing configuration information. use.
  • the using the transmission resource by the first terminal device to transmit data to the second terminal device includes: when the first terminal device uses mode 3 transmission, The first terminal device receives the configuration message and starts until the cell to which the first terminal device switches is reconfigured, and the first terminal device uses the transmission resource to transmit data to the second terminal device; Alternatively, when the first terminal device uses mode 4 transmission, the first terminal device starts to receive the configuration message until the first terminal device acquires the monitored resources, and the first terminal device Transmitting data to the second terminal device using the transmission resource.
  • mode3 can be understood as the communication process between vehicles is controlled by the base station and the transmitting end
  • the vehicle sends control signals and data signals on the resources scheduled by the base station.
  • mode4 the transmission resources of the transmitting vehicle are not controlled by the base station, but rather find the appropriate resources to transmit data by monitoring the busy status of the channel itself.
  • the first terminal device is configured for mode 3 transmission in the target cell. Starting from receiving the configuration information of the first terminal device, until the RRC reconfiguration of the target cell, data transmission is performed using the transmission resources of the source cell. If the first terminal device is configured for mode 4 transmission in the target cell, it starts with receiving the configuration information from the first terminal device until the first terminal device acquires the monitored resources, and uses the transmission resources of the source cell for data transmission.
  • a communication connection is established between the first radio access network device and a core network device, and the second radio access network device and the The core network device has a communication connection established; information is forwarded between the first radio access network device and the second radio access network device through the core network device.
  • the service model information includes any one or more of the following information: service cycle information, and a service relative to a system frame Time offset information of the serial number, priority PPPP information of the side link data packet, reliability PPPR information of the side link data packet, or service packet size information.
  • the second radio access network device determines, according to the service model information of the first terminal device, that the first terminal device is in a side link SL during a handover process.
  • Transmission resources required for data transmission include: the second radio access network device determines a resource period of the transmission resource according to the service cycle information; or the second radio access network device determines the resource period of the transmission resource according to the service.
  • the time offset information relative to the system frame number determines the time domain position of the transmission resource relative to the starting system frame number; or the second radio access network device determines the bearer on the transmission resource according to the PPPP information.
  • the second radio access network device determines a reliability requirement corresponding to the transmission resource and a channel quality corresponding to the transmission resource according to the PPPR information; or the second radio access The network device determines the amount of service data carried on the transmission resource according to the packet size information of the service.
  • the service cycle information refers to a transmission cycle of a service transmitted by the first terminal device
  • the second radio access network device may determine a resource cycle of transmission resources according to the service cycle information, and periodically configure the resource cycle.
  • Transmission resources can be used for periodic transmission of services.
  • the time offset information of the service relative to the SFN refers to the time offset of the service transmitted by the first terminal device relative to the fixed SFN, that is, the time offset information of the service relative to the SFN indicates the service transmitted by the first terminal device.
  • the second radio access network device may determine the time domain position of the transmission resource relative to the starting system frame number according to the time offset information of the service relative to the system frame number, so that the second radio access network device determines the transmission
  • the resources can be correctly obtained by the first terminal device.
  • PPPP and PPPR respectively represent the relative time requirements and reliability requirements of the services transmitted by the first terminal device.
  • the second radio access network device can determine the priority of the data carried on the transmission resource according to the PPPP information, thereby achieving Data of different priorities are transmitted using different transmission resources and can also be used to process scheduling priorities between different terminal devices.
  • the second radio access network device can also determine the reliability requirements and transmission corresponding to the transmission resources based on the PPPR information.
  • the channel quality corresponding to the resource thereby ensuring that the second radio access network device selects a transmission resource with a suitable channel quality for data of different PPPR requirements of the first terminal device.
  • the packet size of the service refers to the amount of data of the service transmitted by the first terminal device.
  • the second radio access network device can determine the amount of service data carried on the transmission resource according to the packet size information of the service, thereby configuring an appropriate amount for the terminal device. To avoid the situation that the service cannot be transmitted due to too large a package.
  • an embodiment of the present application further provides a radio access network device.
  • the radio access network device is specifically a first radio access network device.
  • the first radio access network device includes a receiving module. Configured to receive service model information of the first terminal device sent by a first terminal device; a sending module configured to send the business model information of the first terminal device to a second radio access network device; the receiving module, Configured to receive first resource configuration information sent by the second radio access network device; a processing module configured to determine, according to the first resource configuration information, that the first terminal device is in a side link SL during a handover process Transmission resources required for data transmission, the switching process refers to the first terminal device switching from the first radio access network device to the second radio access network device, and the side chain
  • the path is a communication link between the first terminal device and the second terminal device; the sending module is configured to send a configuration message to the first terminal device; wherein the configuration message includes: the A resource configuration information; or the configuration message includes: second resource configuration information generated by the first radio access network device based
  • the sending module is further configured to perform any one or any of the following operations: sending to the second radio access network device a message supported by the first terminal device. Frequency point information; or sending the CBR measurement result of the channel busy ratio generated by the first terminal device to the second radio access network device; or sending the first terminal to the second radio access network device Location information of the device; or sending inter-station synchronization information to the second radio access network device, where the inter-site synchronization information is used to indicate the first radio access network device and the second radio access network SFN offset information of a system frame number between devices; or sending network standard request information to the second radio access network device, where the network standard request information is used to request the second radio access network device from The network system corresponding to the transmission resource will be described.
  • any one or more of the following information is carried in the handover request: the service model information, frequency point information supported by the first terminal device, and CBR measurement As a result, the location information of the first terminal device, the inter-station synchronization information, and the network standard request information; wherein the handover request is transmitted from the first radio access network device to the second radio access Network equipment.
  • the receiving module is further configured to perform the following operations: receiving network system indication information sent by the second radio access network device, where the network system indication information is used for Indicating a network standard corresponding to the transmission resource; or receiving third resource configuration information sent by the second radio access network device, where the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration Information, multiplexing configuration information.
  • the constituent modules of the first radio access network device may also perform the steps described in the foregoing first aspect and various possible implementation manners. For details, see the foregoing aspects of the first aspect and various possible implementations. Instructions in the implementation.
  • an embodiment of the present application further provides a radio access network device.
  • the radio access network device is specifically a second radio access network device.
  • the second radio access network device includes a receiving module. Configured to receive service model information of a first terminal device sent by a first radio access network device; a processing module configured to determine, based on the service model information of the first terminal device, that the first terminal device is on the side during a handover process Transmission resources required for data transmission on the downlink SL.
  • the switching process refers to the first terminal device switching from the first radio access network device to the second radio access network device.
  • the side link is a communication link between the first terminal device and the second terminal device; a sending module is configured to send first resource configuration information to the first radio access network device, and the first The resource configuration information includes the transmission resources.
  • the receiving module is further configured to perform any one or any of the following operations: receiving support from the first terminal device sent by the first radio access network device Or receiving the channel busy ratio CBR measurement result generated by the first terminal device sent by the first radio access network device; or receiving the channel busy ratio CBR measurement result sent by the first radio access network device; Location information of the first terminal device; or receiving inter-station synchronization information sent by the first radio access network device, where the inter-site synchronization information is used to indicate the first radio access network device and the second radio access network device System frame number SFN offset information between radio access network devices; or receiving network standard request information sent by the first radio access network device, the network standard request information is used to send to the second wireless access network device The network access device requests a network standard corresponding to the transmission resource.
  • the processing module is further configured to perform any one or any of the following operations: according to the frequency point information supported by the first terminal device, to the first terminal device Configure a carrier; or determine the location of the transmission resource for the first terminal device according to the CBR measurement result; or determine the first terminal device for the first terminal device according to the location information of the first terminal device The resource location corresponding to the area where the terminal device is located; or, correcting the time domain location of the transmission resource according to the inter-station synchronization information.
  • the sending module is further configured to perform the following operations: sending network standard instruction information to the first radio access network device, where the network standard instruction information is used to indicate A network standard corresponding to the transmission resource; or sending third resource configuration information to the first radio access network device, where the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration information, Multiplexing configuration information.
  • the constituent modules of the second radio access network device may also perform the steps described in the foregoing second aspect and various possible implementation manners. For details, see the foregoing second aspect and various possible implementations. Instructions in the implementation.
  • an embodiment of the present application further provides a terminal device.
  • the terminal device is specifically a first terminal device, and the first terminal device includes a sending module configured to send a first wireless access network device to the first wireless access network device.
  • the service model information of the first terminal device a receiving module for receiving a configuration message sent by the first radio access network device; a processing module for determining the first resource configuration information according to the configuration message, or the Second resource configuration information generated by the first radio access network device based on the first resource configuration information, where the first resource configuration information includes: the first terminal device transmits on a side link SL during a handover process Transmission resources required for data, the switching process refers to the first terminal device switching from the first radio access network device to the second radio access network device, and the side link is A communication link between the first terminal device and a second terminal device, and the second resource configuration information includes: the first terminal device is on the side link during the handover process Transmission resources required to transfer data; said transmitting module, using the transmission resources for data transmission to the second terminal device.
  • the sending module is further configured to perform any one or any of the following operations: sending to the first radio access network device a Frequency point information; or sending the CBR measurement result of the channel busy ratio generated by the first terminal device to the first radio access network device; or sending the first terminal to the first radio access network device Location information of the device; or sending inter-station synchronization information to the first radio access network device, where the inter-site synchronization information is used to indicate the first radio access network device and the second radio access network System frame number SFN offset information between devices; or sending network standard request information to the first radio access network device, where the network standard request information is used to request the second radio access network device
  • the network system corresponding to the transmission resource will be described.
  • the receiving module is further configured to perform the following operations: receiving network system indication information sent by the first radio access network device, where the network system indication information is used for Indicating a network standard corresponding to the transmission resource; or receiving third resource configuration information sent by the first radio access network device, where the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration Information, multiplexing configuration information.
  • the sending module is further configured to perform the following operations: when the first terminal device adopts mode 3 transmission, receive the configuration from the first terminal device The message starts until the cell to which the first terminal device switches is reconfigured, and the transmission resource is used to transmit data to the second terminal device; or when the first terminal device adopts mode 4 transmission, The first terminal device receives the configuration message until the monitored resource is acquired by the first terminal device, and the data is transmitted to the second terminal device by using the transmission resource.
  • a communication connection is established between the first radio access network device and the core network device, and the second radio access network device
  • a communication connection is established with the core network device; information is forwarded between the first radio access network device and the second radio access network device through the core network device.
  • the business model information includes any one or more of the following information: business cycle information, and business relative to The time offset information of the system frame number, the side link data packet priority PPPP information, the side link data packet reliability PPPR information, or the service packet size information.
  • the processing module of the second radio access network device is further configured to perform any one or any of the following operations: determine the transmission resource according to the service cycle information Or the time domain position of the transmission resource relative to the starting system frame number according to the time offset information of the service relative to the system frame number; or determining the transmission resource on the transmission resource based on the PPPP information Priority of the data carried; or determining the reliability requirement corresponding to the transmission resource and the channel quality corresponding to the transmission resource according to the PPPR information; or determining the bearer on the transmission resource according to the packet size information of the service Volume of business data.
  • the constituent modules of the first terminal device may also perform the steps described in the foregoing third aspect and various possible implementation manners. For details, see the foregoing third aspect and various possible implementation manners. Instructions.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores instructions, and when the computer-readable storage medium runs on the computer, causes the computer to execute the first aspect, the second aspect, or The method described in the third aspect.
  • an embodiment of the present application provides a computer program product containing instructions, which when executed on a computer, causes the computer to execute the method described in the first aspect, the second aspect, or the third aspect above.
  • an embodiment of the present application provides a communication device.
  • the communication device may include an entity such as a device or a chip.
  • the communication device includes a processor, where the processor is configured to execute a program instruction, so that the communication device performs The method according to any one of the foregoing first or second or third aspect.
  • the communication device implements the function of any one of the following devices: a first radio access network device, a second radio access network device, or a first terminal device.
  • the communication device may also be a system chip, which is applied to the first radio access network device, the second radio access network device, or the first terminal device.
  • the communication apparatus further includes: a memory; the memory is configured to store program instructions.
  • the present application provides a chip system including a processor, configured to support a first radio access network device, a second radio access network device, or a first terminal device to implement the first aspect, respectively.
  • the second aspect or the functions involved in the third aspect, for example, sending or processing data and / or information involved in the above method.
  • the chip system further includes a memory, where the memory is configured to store program instructions and data necessary for the first radio access network device, the second radio access network device, or the first terminal device.
  • the chip system may be composed of chips, and may also include chips and other discrete devices.
  • FIG. 1 is a schematic diagram of a system architecture applied to a data transmission method according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of another system architecture applied to a data transmission method according to an embodiment of the present application
  • FIG. 3 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of interaction between a UE, a source base station, and a target base station according to an embodiment of the present application;
  • FIG. 5 is a schematic flowchart of interaction between another UE, a source base station, and a target base station according to an embodiment of the present application;
  • FIG. 6 is a schematic flowchart of interaction between a UE, a source base station, a target base station, and an MME according to an embodiment of the present application;
  • FIG. 7 is a schematic structural diagram of a structure of a first terminal device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a structure of a first radio access network device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a structure of a second radio access network device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another first terminal device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of another first radio access network device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another second radio access network device according to an embodiment of the present application.
  • the embodiments of the present application provide a data transmission method, a radio access network device, and a terminal device, which are used to reduce the transmission delay after the terminal device is switched, improve the data transmission reliability of the terminal device during the switching process, and improve communication efficiency. .
  • the communication system provided in the embodiment of the present application may include at least two wireless access network devices and two terminal devices, and two wireless devices.
  • the access network devices are a first radio access network device and a second radio access network device
  • the two terminal devices are a first terminal device and a second terminal device, respectively, where the first radio access network device is a first
  • the second radio access network device is the target radio access network device for the second terminal device to perform the handover process.
  • the first terminal device refers to the terminal device that performs the handover process.
  • the second terminal device refers to a terminal device that communicates with the first terminal device, and a communication link established between the first terminal device and the second terminal device is a side link.
  • the specific implementation of the radio access network equipment and terminal equipment can be flexibly selected in combination with the actual application scenario, which is not limited here.
  • the communication system provided in the embodiment of the present application includes a core network device in addition to the foregoing two radio access network devices and two terminal devices.
  • the terminal device is connected to the wireless access network device in a wireless manner
  • the wireless access network device is connected to the core network device in a wireless or wired manner.
  • the core network device and the wireless access network device can be separate and different physical devices, or the functions of the core network device and the wireless access network device's logical functions can be integrated on the same physical device, or they can be a physical device It integrates some functions of core network equipment and some functions of wireless access network equipment.
  • the terminal equipment can be fixed or removable.
  • the communication system may further include other network devices, such as a wireless relay device and a wireless backhaul device, which are not shown in FIG. 2.
  • the embodiments of the present application do not limit the number of core network devices, radio access network devices, and terminal devices included in the communication system.
  • a radio access network device is an access device in which a terminal device wirelessly accesses the communication system, and may be a base station (NodeB), an evolved base station (eNodeB), a base station in a 5G communication system, or a base station in a future communication system Or an access node in a wireless fidelity (WiFi) system, the embodiments of this application do not limit the specific technology and specific device form used by the wireless access network device.
  • NodeB base station
  • eNodeB evolved base station
  • WiFi wireless fidelity
  • the terminal device may also be called a terminal (Terminal), a user equipment (UE), a mobile station (MS), a mobile terminal (MT), or the like.
  • the terminal device can be a mobile phone, a tablet, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control (industrial control) ), Wireless terminals in self-driving, wireless terminals in remote surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, and the like.
  • Wireless access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on the water; it can also be deployed on air planes, balloons and artificial satellites.
  • the embodiments of this application do not limit the application scenarios of the radio access network device and the terminal device.
  • Radio access network equipment and terminal equipment and between terminal equipment and terminal equipment can communicate through licensed spectrum (unlicensed spectrum), can also communicate through unlicensed spectrum (unlicensed spectrum), or both Authorize spectrum to communicate.
  • Communication between radio access network equipment and terminal equipment and between terminal equipment and terminal equipment can be performed through a spectrum below 6 gigahertz (gigahertz, GHz), communication can also be performed through a spectrum above 6 GHz, and it can also use below 6 GHz at the same time Communication with the spectrum above 6GHz.
  • the embodiments of the present application do not limit the spectrum resources used between the radio access network device and the terminal device.
  • a data transmission method provided by an embodiment of the present application may include:
  • the first terminal device sends the service model information of the first terminal device to the first radio access network device.
  • the first terminal device is currently in the coverage area of the cell (ie, the source cell) managed by the first radio access network device, the first terminal device obtains the business model information of the first terminal device, and then the first terminal The device sends service model information (traffic model) of the first terminal device to the first radio access network device.
  • the first terminal device may use the UE assistance information (radiation control) in radio resource control (RRC) signaling. information) field sends the service model information of the first terminal device.
  • RRC radio resource control
  • the service model information of the first terminal device may also be referred to as UE assistance information.
  • the service model information is used to describe the relevant attributes of the service transmitted by the first terminal device.
  • the service model information The content included in the service model information may be determined according to the service transmitted by the first terminal device.
  • the service model information further includes any one or more of the following information: service cycle information, and time offset information of a service relative to a system frame number (SFN) , Side link data packet priority (prose, packet-priority, PPPP) information, side link data packet reliability (prose, packet-reliability, PPPR) information, or service packet size information.
  • SFN system frame number
  • Side link data packet priority prose, packet-priority, PPPP
  • PPPR side link data packet reliability
  • service packet size information service packet size information.
  • the service cycle information refers to the transmission cycle of the service transmitted by the first terminal device
  • the time offset that is, the time offset information of the service relative to the SFN, indicates the arrival time of the service transmitted by the first terminal device.
  • PPPP and PPPR represent the time priority requirements and Relative demand for reliability.
  • the packet size of a service refers to the amount of data of the service transmitted by the first terminal device.
  • the data transmission method provided by the embodiment of the present application further includes any one or any of the following operations:
  • the first terminal device sends frequency point information supported by the first terminal device to the first radio access network device;
  • the first terminal device sends a channel busy ratio (CBR) measurement result generated by the first terminal device to the first radio access network device; or,
  • CBR channel busy ratio
  • the first terminal device sends the location information of the first terminal device to the first radio access network device;
  • the first terminal device sends inter-station synchronization information to the first radio access network device, and the inter-site synchronization information is used to indicate system frame number offset information between the first radio access network device and the second radio access network device; or,
  • the first terminal device sends network standard request information to the first radio access network device, and the network standard request information is used to request the second radio access network device for a network standard corresponding to a transmission resource.
  • the frequency point information supported by the first terminal device may also be referred to as the frequency point information of interest to the first terminal device.
  • the frequency point information supported by the first terminal device refers to the frequency points supported by the first terminal device.
  • the frequency point information supported by a terminal device may be reported to the first radio access network device through RRC signaling.
  • the frequency point information supported by the first terminal device may be reported to the side link terminal information (SidelinkUEInformation) in RRC.
  • a first radio access network device may be reported to the side link terminal information (SidelinkUEInformation) in RRC.
  • the first terminal device may also generate a CBR measurement result.
  • the CBR measurement result is a result obtained after the first terminal device monitors the busyness of the time-frequency resource, and may assist the second radio access network device to configure transmission resources.
  • the first CBR measurement result may also be reported to the first radio access network device through RRC signaling.
  • the location information of the first terminal device refers to the current geographic location of the first terminal device.
  • the location information may specifically be global positioning system (GPS) information of the first terminal device, and the location of the first terminal device.
  • GPS global positioning system
  • the information is used by the second radio access network device to allocate transmission resources for the first terminal device.
  • the location information of the first terminal device may also be reported to the first radio access network device through RRC signaling.
  • the first terminal device may also generate inter-site synchronization information, which is used to indicate system frame number offset information between the first radio access network device and the second radio access network device, that is, the inter-site synchronization information is used for For indicating the synchronization time error offset between two wireless access network devices, the first terminal device can actively send inter-station synchronization information to the first wireless access network device, for example, the first terminal device can send the first wireless device to the first wireless device.
  • the access network device sends the inter-site synchronization information at one time, and may also periodically send the inter-site synchronization information to the first radio access network device.
  • the first terminal device may also send the inter-site synchronization information according to the configuration of the first radio access network device.
  • the manner in which the first terminal device sends the inter-site synchronization information is not limited herein. It should be noted that the periodic configuration or the single report may be configured through the first radio access network device. For example, in the case of periodic reporting, the first radio access network device needs to configure a reporting period for the first terminal device.
  • the first terminal device may also generate network standard request information, and send the network standard request information to the first radio access network device, and the network standard request information is used to request the second radio access network device for the network standard corresponding to the transmission resource.
  • the second radio access network device may also indicate a network standard corresponding to the transmission resource determined by the first terminal device. For example, the second radio access network device sends a handover acknowledgement (HO) to the first radio access device.
  • HOACK carries the resource configuration information of the target cell, it is necessary to further indicate that the transmission resource is a long-term evolution (long-term evolution).
  • the term (evolution, LTE) standard is still used in the new air interface (NR) standard, because in the existing deployment, the same first terminal device may have both LTE SL and NR SL capabilities, so it is necessary
  • the second radio access network device indicates which network system the transmission resource corresponds to.
  • the first radio access network device performs RRC reconfiguration on the first terminal device, it also needs to further indicate which system configuration transmission resource is used. So that when the first terminal device receives the transmission resource, it uses the corresponding transmission parameters for adaptation.
  • the first radio access network device receives service model information of the first terminal device sent by the first terminal device.
  • the first radio access network device is used to manage a source cell where the first terminal device is located before the handover, and the first terminal device sends a service model of the first terminal device to the first radio access network device.
  • the first radio access network device may receive the service model information of the first terminal device through the wireless network.
  • the first radio access network device sends the service model information of the first terminal device to the second radio access network device.
  • the first radio access network device is used to manage a source cell where the first terminal device is located before handover
  • the second radio access network device is used to manage the first terminal device where the first terminal device is located after handover
  • the target cell after the first radio access network device receives the service model information of the first terminal device, in order to facilitate the second radio access network device to allocate transmission resources for the first terminal device, the first radio access network device may The second radio access network device sends the service model information of the first terminal device.
  • the first radio access network device and the second radio access network device can be connected through an X2 interface. Then, the first radio access network device Send the service model information of the first terminal device to the second radio access network device through the X2 interface.
  • the first terminal device sends a measurement report to the first radio access network device to trigger a handover, and the first radio access network device decides to start the handover process according to the measurement report reported by the first terminal device.
  • the first radio access network device sends a handover request (HO request) to the second radio access network device, and the handover request carries service model information of the first terminal device.
  • the first radio access network device can send the service model information of the first terminal device to the second radio access network device through the handover request, so that the second radio access network device can obtain the service model information of the first terminal device.
  • HO request handover request
  • the first radio access network device can send the service model information of the first terminal device to the second radio access network device through the handover request, so that the second radio access network device can obtain the service model information of the first terminal device.
  • An example is as follows.
  • the first radio access network device is the source base station
  • the second radio access network device is the target base station.
  • the source base station sends the service model information of
  • the X2 interface between the source cell and the target cell is unavailable or there is no X2 interface.
  • a communication connection is established between the first radio access network device and the core network device.
  • a communication connection is established between the second radio access network device and the core network device, and information is forwarded between the first radio access network device and the second radio access network device through the core network device.
  • the first radio access network device sends the business model information of the first terminal device to the core network device, and the core network device forwards the business model information to the second radio access network device.
  • the data transmission method provided in the embodiment of the present application further includes any one or any of the following operations:
  • the first radio access network device sends frequency point information supported by the first terminal device to the second radio access network device;
  • the first radio access network device sends a channel busy ratio CBR measurement result generated by the first terminal device to the second radio access network device;
  • the first radio access network device sends the location information of the first terminal device to the second radio access network device;
  • the first radio access network device sends inter-station synchronization information to the second radio access network device.
  • the inter-site synchronization information is used to indicate a system frame number SFN between the first radio access network device and the second radio access network device. Offset information; or,
  • the first radio access network device sends network standard request information to the second radio access network device, and the network standard request information is used to request the second radio access network device for a network standard corresponding to a transmission resource.
  • the frequency point information supported by the first terminal device may also be referred to as the frequency point information of interest to the first terminal device.
  • the frequency point information supported by the first terminal device refers to the frequency points supported by the first terminal device.
  • Frequency point information supported by a terminal device may be reported to the first radio access network device through RRC signaling, and the first radio access network device may obtain frequency point information supported by the first terminal device through the RRC signaling.
  • the first radio access network device may also send frequency point information supported by the first terminal device to the second radio access network device, so that the second radio access network device may obtain the frequency point information supported by the first terminal device.
  • the first terminal device may also generate a CBR measurement result.
  • the CBR measurement result is a result obtained after the first terminal device monitors the busyness of the time-frequency resource, and may assist the second radio access network device to configure transmission resources.
  • the first CBR measurement result may also be reported to the first radio access network device through RRC signaling, and the first radio access network device may obtain the CBR measurement result through the RRC signaling.
  • the first radio access network device sends a CBR measurement result to the second radio access network device, so that the second radio access network device can obtain the CBR measurement result.
  • the location information of the first terminal device refers to the current geographic location of the first terminal device.
  • the location information of the first terminal device is used by the second radio access network device to allocate transmission resources for the first terminal device.
  • the location information of the first terminal device may also be reported to the first radio access network device through RRC signaling.
  • the first radio access network device can obtain location information of the first terminal device through the RRC signaling.
  • the first radio access network device can send the location information of the first terminal device to the second radio access network device, so that the second radio access network device can obtain the location information of the first terminal device.
  • the first terminal device may also generate inter-site synchronization information, which is used to indicate system frame number offset information between the first radio access network device and the second radio access network device, that is, the inter-site synchronization information is used for For indicating the synchronization time error offset between two wireless access network devices, the first terminal device can actively send inter-station synchronization information to the first wireless access network device, for example, the first terminal device can send the first wireless device to the first wireless device.
  • the access network device sends the inter-site synchronization information at one time, and may also periodically send the inter-site synchronization information to the first radio access network device.
  • the first terminal device may also send the inter-site synchronization information according to the configuration of the first radio access network device.
  • the manner in which the first terminal device sends the inter-site synchronization information is not limited herein. It should be noted that the periodic configuration or the single report may be configured through the first radio access network device. For example, in the case of periodic reporting, the first radio access network device needs to configure a reporting period for the first terminal device. The first radio access network device may send inter-site synchronization information to the second radio access network device, so that the second radio access network device may obtain the inter-site synchronization information.
  • the first terminal device may also generate network standard request information, and send the network standard request information to the first radio access network device, and the network standard request information is used to request the second radio access network device for the network standard corresponding to the transmission resource.
  • the first radio access network device sends network standard request information to the second radio access network device, so that the second radio access network device can obtain the network standard request information, and the second radio access network device may also be the first terminal.
  • the transmission resource determined by the device indicates the corresponding network standard.
  • the second radio access network device when the second radio access network device sends a HOACK to the first radio access device, and the HOACK carries the resource configuration information of the target cell, it needs to further indicate whether the transmission resource is LTE or NR, because In existing deployments, it may happen that the same first terminal device has both LTE SL and NR SL capabilities, so a second radio access network device is required to indicate which network standard this transmission resource corresponds to, and the first wireless When the access network device performs RRC reconfiguration on the first terminal device, it also needs to further indicate which system the configured transmission resource is used for, so that the first terminal device uses the corresponding transmission parameters for adaptation when receiving the transmission resource. .
  • any one or more of the following information is carried in the handover request: service model information, frequency point information supported by the first terminal device, CBR measurement results, the first terminal Device location information, inter-station synchronization information, network standard request information;
  • the handover request is sent by the first radio access network device to the second radio access network device.
  • the first terminal device sends a measurement report to the first radio access network device to trigger a handover, and the first radio access network device decides to start the handover process according to the measurement report reported by the first terminal device.
  • the first radio access network device sends a handover request to the second radio access network device.
  • the handover request carries any one or more of the following information: the service model information, and the first terminal device. Supported frequency information, CBR measurement results, location information of the first terminal device, inter-station synchronization information, and network standard request information.
  • the first radio access network device to send any one or more of the following information to the second radio access network device to be carried in the handover request: service model information of the first terminal device, and the first terminal Frequency point information supported by the device, CBR measurement results, location information of the first terminal device, inter-station synchronization information, and network standard request information.
  • the second radio access network device receives service model information of the first terminal device sent by the first radio access network device.
  • the second radio access network device may receive the service model of the first terminal device sent by the first radio access network device.
  • Information for example, the first radio access network device and the second radio access network device can be connected through an X2 interface, and then the second radio access network device receives the first radio access network device sent by the first radio access network device through the X2 interface.
  • Business model information of a terminal device for example, the first radio access network device and the second radio access network device can be connected through an X2 interface, and then the second radio access network device receives the first radio access network device sent by the first radio access network device through the X2 interface.
  • the first terminal device sends a measurement report to the first radio access network device to trigger a handover, and the first radio access network device decides to start the handover process according to the measurement report reported by the first terminal device.
  • the first radio access network device sends a handover request to the second radio access network device, and the handover request carries service model information of the first terminal device.
  • the handover request can be used to enable the second radio access network device to obtain the service model information of the first terminal device.
  • An example is as follows.
  • the first radio access network device is a source base station
  • the second radio access network device is a target base station.
  • the source base station sends the HO request to the target base station with service model information used to configure resources for the side link.
  • the target base station obtains the service model information for configuring resources for the side link through the HO request.
  • the X2 interface between the source cell and the target cell is unavailable or there is no X2 interface.
  • a communication connection is established between the first radio access network device and the core network device.
  • a communication connection is established between the second radio access network device and the core network device, and information is forwarded between the first radio access network device and the second radio access network device through the core network device.
  • the second radio access network device receives the service model information of the first terminal device forwarded by the core network device, and the service model information is sent by the first radio access network device to the core network device.
  • the second radio access network device determines, according to the service model information of the first terminal device, transmission resources required by the first terminal device to transmit data on the side link during the handover process.
  • the switching process refers to the switching of the first terminal device from the first radio access network device to the second radio access network device, and the side link is the communication link between the first terminal device and the second terminal device. .
  • the second radio access network device parses the service model information of the first terminal device and determines the transmission of the first terminal device.
  • the service model information of the first terminal device refers to the information required when the second radio access network device allocates transmission resources to the first terminal device.
  • the service model information may determine the content included in the service model information according to the service transmitted by the first terminal device.
  • the second radio access network device may allocate transmission resources for the services transmitted by the first terminal device according to the service model information of the first terminal device, and the transmission resources may be used for the first terminal device to transmit on the side link during the handover process. data.
  • the transmission resource determined by the second radio access network device for the first radio access network device is a periodically configured resource.
  • the first terminal device may use the periodically configured transmission resource for data transmission.
  • transmission resources are configured in a semi-persistent scheduling (SPS) manner; and / or configured in a grant-free (GF) manner.
  • SPS and GF are both methods of pre-configured resources. They are two different resource allocation methods.
  • SPS pre-configures resources through RRC and activates them through downlink control signaling (DCI) signaling.
  • DCI downlink control signaling
  • GF allocates resources through RRC, and activation is also performed by RRC, that is, RRC indicates the effective time of transmission resources configured in GF mode.
  • the second radio access network device may flexibly configure a resource pre-configuration mode adopted according to a scenario.
  • the service model information further includes any one or more of the following information: service cycle information, service time offset information with respect to SFN, PPPP information, PPPR information, or services Package size information.
  • the service cycle information refers to the transmission cycle of the service transmitted by the first terminal device
  • the time offset that is, the time offset information of the service relative to the SFN, indicates the arrival time of the service transmitted by the first terminal device.
  • PPPP and PPPR respectively represent the time priority requirements and Relative demand for reliability.
  • the packet size of a service refers to the amount of data of the service transmitted by the first terminal device.
  • step 305 the second radio access network device determines, according to the service model information of the first terminal device, that the first terminal device needs to transmit data on the side link SL during the handover process.
  • Transmission resources including:
  • the second radio access network device determines a resource period of transmission resources according to the service period information
  • the second radio access network device determines the time domain position of the transmission resource relative to the starting system frame number according to the time offset information of the service relative to the system frame number; or,
  • the second radio access network device determines the data priority carried on the transmission resource according to the PPPP information
  • the second radio access network device determines the reliability requirement corresponding to the transmission resource and the channel quality corresponding to the transmission resource according to the PPPR information; or
  • the second radio access network device determines the amount of service data carried on the transmission resource according to the packet size information of the service.
  • the service cycle information refers to the service cycle of the service transmitted by the first terminal device.
  • the second radio access network device can determine the resource cycle of the transmission resource according to the service cycle information.
  • the periodically configured transmission resource can be used for periodic transmission.
  • the second radio access network device may determine the time domain position of the transmission resource relative to the starting system frame number according to the time offset information of the service relative to the system frame number, so that the second wireless access device
  • the transmission resources determined by the network access device can be correctly parsed by the first terminal device.
  • the second radio access network device can determine the priority of the data carried on the transmission resource according to the PPPP information, thereby achieving Data of different priorities are transmitted using different transmission resources and can also be used to process scheduling priorities between different terminal devices.
  • the second radio access network device can also determine the reliability requirements and transmission corresponding to the transmission resources based on the PPPR information.
  • the channel quality corresponding to the resource thereby ensuring that the second radio access network device selects a transmission resource with a suitable channel quality for data of different PPPR requirements of the first terminal device.
  • the packet size of the service refers to the amount of data of the service transmitted by the first terminal device.
  • the second radio access network device can determine the amount of service data carried on the transmission resource according to the packet size information of the service, thereby configuring an appropriate amount for the terminal device. To avoid the situation that the service cannot be transmitted due to too large a package.
  • the data transmission method provided by the embodiment of the present application further includes any one or any of the following operations:
  • the second radio access network device sends network standard instruction information to the first radio access network device, and the network standard instruction information is used to indicate a network standard corresponding to the transmission resource; or,
  • the second radio access network device sends the third resource configuration information to the first radio access network device.
  • the third resource configuration information includes at least one of the following information: carrier aggregation (CA) configuration information, multiplexing With configuration information.
  • CA carrier aggregation
  • the first radio access network device sends network standard request information to the second radio access network device, so that the second radio access network device can obtain the network standard request information, and the second radio access network device may also be the first A transmission resource determined by a terminal device indicates a corresponding network standard.
  • the second radio access network device when the second radio access network device sends a HOACK to the first radio access device, and the HOACK carries the resource configuration information of the target cell, it needs to further indicate whether the transmission resource is LTE or NR, because In existing deployments, it may happen that the same first terminal device has both LTE SL and NR SL capabilities, so a second radio access network device is required to indicate which network standard this transmission resource corresponds to, and the first wireless When the access network device performs RRC reconfiguration on the first terminal device, it also needs to further indicate which system the configured transmission resource is used for, so that the first terminal device uses the corresponding transmission parameters for adaptation when receiving the transmission resource. .
  • the second radio access network device may also generate CA configuration information and duplication configuration information for the first terminal device. For example, as follows, the second radio access network device can obtain the frequency point information supported by the first terminal device, and thereby generate the CA configuration information based on the carrier used when configuring the CA according to the frequency point information supported by the first terminal device. As another example, the second radio access network device may generate the multiplexing configuration information according to the service reliability requirements of the first terminal device. For example, the second radio access network device may obtain the PPPR generated by the first terminal device. Information, the PPPR information can assist the second radio access network device to determine whether to use multiplexing, such as using multiplexing when the PPPR is lower than a certain value. The second radio access network device sends third resource configuration information to the first radio access network device. The third resource configuration information includes CA configuration information and multiplexing configuration information.
  • the second radio access network device sends first resource configuration information to the first radio access network device, where the first resource configuration information includes transmission resources.
  • the second radio access network device after the second radio access network device determines transmission resources required for the first terminal device to transmit data on the side link during the handover process, the second radio access network device generates the first resource Configuration information.
  • the first resource configuration information includes transmission resources determined for the first terminal device by the second radio access network device.
  • the second radio access network device sends the first resource configuration information to the first radio access network device.
  • the first radio access network device and the second radio access network device can be connected through an X2 interface.
  • the two radio access network devices send the first resource configuration information to the first radio access network device through the X2 interface.
  • the data transmission method provided in the embodiment of the present application further includes any one or several of the following operations:
  • the second radio access network device receives frequency point information supported by the first terminal device sent by the first radio access network device;
  • the second radio access network device receives inter-station synchronization information sent by the first radio access network device, and the inter-station synchronization information is used to indicate a system frame number between the first radio access network device and the second radio access network device SFN offset information; or,
  • the second radio access network device receives the network standard request information sent by the first radio access network device, and the network standard request information is used to request the second radio access network device for a network standard corresponding to the transmission resource.
  • the second radio access network device further performs any one or any of the following operations:
  • the second radio access network device configures a carrier for the first terminal device according to the frequency point information supported by the first terminal device;
  • the second radio access network device corrects the time domain position of the transmission resource according to the inter-station synchronization information.
  • the frequency point information supported by the first terminal device may also be referred to as the frequency point information of interest to the first terminal device.
  • the frequency point information supported by the first terminal device refers to the frequency points supported by the first terminal device.
  • the radio access network device can obtain the frequency point information supported by the first terminal device, the second radio access network device parses the frequency point information supported by the first terminal device, and then determines the carrier information corresponding to the terminal device data transmission.
  • the first terminal device may also generate a CBR measurement result.
  • the CBR measurement result is a result obtained after the first terminal device monitors the busyness of the time-frequency resource, and may assist the second radio access network device to configure transmission resources.
  • the second radio access network device can obtain the CBR measurement result, and the second radio access network device determines the idle status of the time-frequency resource by analyzing the CBR measurement result, so that the data can be determined for the first terminal device according to the CBR measurement result. Transmission of corresponding time-frequency resources.
  • the location information of the first terminal device refers to the current geographic location of the first terminal device.
  • the second radio access network device can obtain the location information of the first terminal device, and then determines that it corresponds to the geographical area where the first terminal device is located. Time-frequency resources.
  • the second radio access network device may obtain inter-station synchronization information, and then correct the time domain position of the transmission resource according to the inter-station synchronization information. Without limitation, in other embodiments of the present application, the second radio access network device may not correct the time domain position of the transmission resource, but the first radio access network device may perform transmission based on the inter-station synchronization information. The time domain position of the resource is corrected.
  • the first terminal device may also generate network standard request information
  • the second radio access network device may obtain the network standard request information through the first radio access network device
  • the second radio access network device may also determine for the first terminal device
  • the transmission resource indicates the corresponding network standard
  • the first radio access network device receives the first resource configuration information sent by the second radio access network device.
  • the first resource configuration information includes: transmission resources required by the first terminal device to transmit data on the side link during a handover process, and the handover process refers to the first terminal device moving from the first wireless access network device to the first The two radio access network devices are switched, and the side link is a communication link between the first terminal device and the second terminal device.
  • the second radio access network device may send the first resource configuration information to the first radio access network device, so that the first radio access network device may receive the first resource configuration information from the second radio access network device.
  • a resource allocation information For example, the first radio access network device and the second radio access network device can be connected through an X2 interface, and then the first radio access network device receives the first resource sent by the second radio access network device through the X2 interface. Configuration information.
  • the data transmission method provided by the embodiment of the present application further includes any one or any of the following operations:
  • the first radio access network device receives the network standard indication information sent by the second radio access network device, and the network standard indication information is used to indicate a network standard corresponding to the transmission resource; or,
  • the first radio access network device receives third resource configuration information sent by the second radio access network device.
  • the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration information and multiplexing configuration information.
  • the second radio access network device may also indicate a network standard corresponding to the transmission resource determined by the first terminal device. For example, when the second radio access network device sends a HOACK to the first radio access device, and the HOACK carries resource configuration information of the target cell, it needs to further indicate whether the transmission resource is used in the LTE system or the NR system.
  • the second radio access network device may send the network standard indication information to the first radio access network device, so the first radio access network device may obtain the network standard indication information from the second radio access network device.
  • the second radio access network device sends third resource configuration information to the first radio access network device, where the third resource configuration information includes CA configuration information and multiplexing configuration information, so that the first radio access network device can receive
  • the second radio access network device obtains the third resource configuration information, and the first radio access network device can obtain the CA configuration information and the multiplexed configuration information generated by the second radio network device.
  • the receiving, by the first radio access network device, the first resource configuration information sent by the second radio access network device includes:
  • the first radio access network device receives a handover confirmation sent by the second radio access network device, where the handover confirmation carries the first resource configuration information.
  • the first radio access network device sends a handover request to the second radio access network device
  • the second radio access network device may send a handover confirmation
  • the handover confirmation carries the second radio access network device to determine Out the first resource configuration information, so that the first radio access network device can obtain the first resource configuration information by analyzing the handover confirmation.
  • the first radio access network device sends a configuration message to the first terminal device.
  • the configuration message includes: first resource configuration information; or
  • the configuration message includes: second resource configuration information generated by the first radio access network device based on the first resource configuration information, and the second resource configuration information includes: the first terminal device needs to transmit data on the side link during the handover process Transmission resources.
  • the first radio access network device may send the foregoing configuration message through RRC reconfiguration information.
  • the configuration message may be carried by a mobility control information (mobility control info) cell in the RRC reconfiguration information.
  • the first radio access network device may send a configuration message to the first terminal device, and the configuration message may pass RRC signaling.
  • the configuration message includes first resource configuration information, that is, the first radio access network device sends the first resource configuration information received from the second radio access network device to the first terminal device in a configuration message.
  • the first radio access network device may also generate second resource configuration information based on the first resource configuration information.
  • the second resource configuration information includes: the first terminal device needs to transmit data on the side link during the handover process. For transmission of resources, the first radio access network device carries the generated second resource configuration information in a configuration message and sends it to the first terminal device.
  • the first radio access network device may further send network standard indication information or third resource configuration information to the first terminal device.
  • the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration information and multiplexing configuration information.
  • the first terminal device may receive the network standard indication information, so that when the first terminal device receives the transmission resource, it uses the corresponding sending parameter for adaptation.
  • the first terminal device determines the CA determined by the second radio access network device by analyzing the CA configuration information, and determines whether to enable multiplexing by analyzing the multiplexing configuration information.
  • the first terminal device receives a configuration message sent by the first radio access network device.
  • the configuration message includes: first resource configuration information; or, the configuration message includes: second resource configuration information generated by the first radio access network device based on the first resource configuration information, and the first resource configuration information includes: the first terminal device Transmission resources required for transmitting data on the side link SL during the handover process.
  • the handover process refers to the first terminal device switching from the first radio access network device to the second radio access network device.
  • the side chain The path is a communication link between the first terminal device and the second terminal device, and the second resource configuration information includes: transmission resources required by the first terminal device to transmit data on the side link during the handover process.
  • the data transmission method provided in the embodiment of the present application further includes any one or any of the following operations:
  • Network system indication information sent by a first radio access network device, and the network system indication information is used to indicate a network system corresponding to a transmission resource;
  • the first terminal device receives the third resource configuration information sent by the first radio access network device, and the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration information and multiplexing configuration information.
  • the first terminal device sends network standard request information, and after being forwarded by the first wireless access network device, the second wireless access network device receives the network standard request information, and the second wireless access network device may also be the first The transmission resource determined by the terminal device indicates the corresponding network standard.
  • the first radio access network device performs RRC reconfiguration on the first terminal device, it also needs to further indicate which system the configured transmission resource is used in.
  • the first terminal device can The network standard indication information is received, so that when the first terminal device receives the transmission resource, it uses the corresponding transmission parameter for adaptation.
  • the second radio access network device sends the third resource configuration information to the first radio access network device, and after being forwarded by the first radio access network device, the first terminal device obtains the third resource configuration information and the third resource configuration information Including CA configuration information and multiplexing configuration information, so that the first terminal device determines the CA determined by the second radio access network device by analyzing the CA configuration information, and determines whether to enable multiplexing by analyzing the multiplexing configuration information. use.
  • the first terminal device uses the transmission resource to transmit data to the second terminal device.
  • the first terminal device receives a configuration message sent by the first radio access network device, and the configuration message includes the first resource configuration information or the second resource configuration information.
  • the first terminal device parses the first resource configuration information.
  • the resource configuration information or the second resource configuration information determines a transmission resource, and then the first terminal device can use the transmission resource to transmit data to the second terminal device. For example, the first terminal device may use the transmission resource to send data to the second terminal device.
  • the first terminal device using the transmission resource to transmit data to the second terminal device includes:
  • the first terminal device When the first terminal device transmits in mode 3, the first terminal device receives the configuration message in step 309, and continues to the cell to which the first terminal device switches for reconfiguration. The first terminal device uses transmission resources to The second terminal device transmits data; or
  • the first terminal device When the first terminal device adopts the mode 4 transmission, the first terminal device receives the configuration message until the first terminal device obtains the monitored resources, and the first terminal device uses the transmission resources to transmit data to the second terminal device.
  • mode3 can be understood as the communication process between vehicles is controlled by the base station and the transmitting end
  • the vehicle sends control signals and data signals on the resources scheduled by the base station.
  • mode4 the transmission resources of the transmitting vehicle are not controlled by the base station, but rather find the appropriate resources to transmit data by monitoring the busy status of the channel itself.
  • the first terminal device is configured for mode 3 transmission in the target cell. Starting from receiving the configuration information of the first terminal device, until the RRC reconfiguration of the target cell, data transmission is performed using the transmission resources of the source cell. If the first terminal device is configured for mode 4 transmission in the target cell, it starts with receiving the configuration information from the first terminal device until the first terminal device acquires the monitored resources, and uses the transmission resources of the source cell for data transmission.
  • the present application is exemplified that the first radio access network device can send the service model information of the first terminal device to the second radio access network device, so that the second radio access network device can The service model information of the terminal device determines transmission resources required for the first terminal device to transmit data on the SL during the handover process, and the second radio access network device sends the first resource configuration information carrying the transmission resource to the first radio connection.
  • the first wireless access network device can send a configuration message to the first terminal device, so that the first terminal device can obtain the transmission resource determined by the second wireless access network device through the configuration message, and the first terminal device Use the transmission resource to transmit data to the second terminal device.
  • the second radio access network device is used to determine the transmission resources required for the first terminal device to transmit data on the SL during the handover process according to the service model information of the first terminal device, so that the first terminal device can use This transmission resource performs data transmission with the second terminal device, thereby reducing the transmission delay after the terminal device is switched, improving the data transmission reliability of the terminal device during the switching process, and improving communication efficiency.
  • the terminal device is specifically a UE and the radio access network device is an eNodeB.
  • the UE may be the foregoing V-UE.
  • the source cell notifies the target cell of relevant information such as the traffic model of the SL carried in the HO request, and the target cell directly configures the UE by confirming it in the HO (ACK).
  • SL SPS / GF resources are used for data transmission during the handover process.
  • the measurement reconfiguration delay after accessing the new cell is reduced, and the handover is improved. Reliability of data transmission during the process.
  • the above-mentioned SPS / GF resources refer to transmission resources configured according to the SPS or GF method. In actual applications, it is necessary to allocate appropriate resources and effective moments according to the actual service conditions to be sent.
  • FIG. 4 is a schematic flowchart of an interaction process between a UE, a source base station, and a target base station according to an embodiment of the present application.
  • the source cell notifies the target cell by carrying relevant information such as SL traffic model in the HO request.
  • the target cell After the V-UE switches to the target cell, the target cell directly configures SL SPS / GF configuration information for the UE according to the SL traffic model.
  • traffic model is the interaction information between two base stations, for example, it can be transmitted through X2 port or Xn port or inter-node RRC signaling between base stations.
  • the handover process shown in FIG. 4 may include the following processes:
  • the V-UE sends a measurement report to the source base station to trigger a handover.
  • the source base station decides to start the handover process according to the measurement result reported by the UE, and sends a HO request to the target base station.
  • the measurement result includes the measurement report described above.
  • the HO request carries at least one of the following information. UE ID binding.
  • the HO request carries the following information: Traffic model, including: service cycle, offset, PPPP, PPPR, message size, etc .; frequency of interest; CBR measurement results; GPS and other information.
  • the target base station sends a handover request feedback to the source base station.
  • the HOACK message of the X2 interface carries the exceptional resource pool (exceptional pool) resource configuration information of the target cell.
  • the source base station sends RRC reconfiguration information to the V-UE, performs RRC reconfiguration, requires the V-UE to perform handover, and configures exceptionalpool resource information.
  • the UE initiates access to the target base station and performs handover.
  • T304 is a timer started when the UE receives an RRC connection reconfiguration message with mobility control information (mobility control info), and stops the timer after completing random access of the new cell.
  • mobility control info mobility control info
  • the target base station sends resource configuration information to the UE.
  • the target cell After the V-UE successfully accesses the target cell, the target cell directly configures the SPS / GF resources for the UE according to the SL traffic model obtained by the source cell, as well as SL CA configuration and SL multiplexing configuration.
  • the traffic model sent by the source base station to the target base station includes at least one or a combination of the following messages: service cycle, offset, PPPP, PPPR, message size, and the like.
  • the service period represents the period of the semi-static service when the UE is at the source base station.
  • the service period in the Traffic model can correspond to the resource period in the SPS / GF resource.
  • PPPP and PPPR respectively represent the relative priority requirements and reliability requirements of this service in time.
  • the frequency of interest can assist the base station to configure the carrier used by the CA.
  • the PPPR parameters can be Whether the secondary base station uses multiplexing, such as when PPPR is lower than a certain value.
  • the message size is the packet size of this service.
  • the source base station can also carry the UE's frequency information of interest in the HO request message to facilitate the target base station to configure the SL CA for the UE.
  • the source base station can also carry the PPPR information in the HO request message, so that the target base station can configure SL duplication for the UE.
  • the HO request message carries the CBR measurement result and the GPS information of the UE to assist the target base station in scheduling.
  • the CBR measurement result may include the measurement result of the resource pool used by mode 3 and the measurement result of the resource pool used by mode 4.
  • the target base station needs to indicate what kind of resource pool this exceptional pool is in.
  • the source base station needs to further indicate the configured exceptional pool when performing RRC reconfiguration of the UE.
  • the standard is used so that the UE uses the corresponding transmission parameters for adaptation when receiving this resource.
  • the target cell when the V-UE switches to the target cell, the target cell directly configures the SLS / GF configuration information for the UE according to the SL traffic model, which reduces the re-measurement of the SL after the V-UE is switched to the target cell. And the process of reconfiguring resources, effectively reducing the delay.
  • This solution can ensure that the received SLS / GF resources can be used when accessing the target base station. After the UE successfully accesses the target base station, the UE will continue to report parameters such as the service model to assist the base station in updating the configuration later.
  • FIG. 5 is another schematic flowchart of interaction between a UE, a source base station, and a target base station according to an embodiment of the present application.
  • the source cell notifies the target cell by carrying relevant information such as SL traffic model in the HO request, and the target cell directly configures the SLS / GF configuration information for the UE by using the HO command for data transmission during the handover process.
  • SPS / GF resources are scheduling resources obtained through the base station's service model parameters. The resources in the exceptional pool are fixed and decoupled from services.
  • the handover process shown in FIG. 5 may include the following processes:
  • the V-UE sends a measurement report to the source base station to trigger a handover.
  • the source base station decides to start a handover process according to the measurement result reported by the UE, and sends a HO request to the target base station.
  • the measurement result includes the above measurement report, in which the HO request carries at least one of the following information: Traffic model: service cycle, offset, PPPP, PPPR, message size, etc .; inter-base station synchronization information: inter-site SFN offset, used to assist configuration SPS offset; frequency of interest; CBR measurement results; GPS and other information.
  • the inter-station SFN offset represents the synchronization time error offset between the two base stations.
  • the synchronization information between the base stations may be periodically configured by the UE to report, or may be reported by the UE once. For the case of using periodic configuration or single report, it can be configured by the base station. For example, in the case of periodic report, the base station needs to configure the report period. For example, the base station may configure the UE to report.
  • the source base station measures the SFN offset by configuring the UE and configures the resource for reporting the offset.
  • the UE reports the inter-site SFN offset to the source base station through signaling such as RRC reconfiguration information.
  • the target base station sends a handover request feedback to the source base station.
  • the HOACK of the X2 port carries SLS / GF resource configuration information of the target cell.
  • the SPS / GF resource configuration information includes time-frequency resources, period, offset, MCS, and transmission power. It can also carry the SL CA configuration and SL Duplication configuration of the target cell through the X2 port at the same time. Can also carry candidate exceptional resources.
  • the source base station sends RRC reconfiguration information to the V-UE, performs RRC reconfiguration, requires the V-UE to perform handover, and configures SPS / GF information.
  • the UE initiates target base station access and performs handover.
  • the transmission parameters are used for data transmission.
  • the transmission parameters may include: modulation and coding schemes (Modulation and Coding Schemes, MCS), and transmission power.
  • the UE If the UE is configured for mode 3 transmission in the target cell, it starts from the UE receiving the configuration information of the HO until the RRC reconfiguration of the target cell, and uses the SPS / GF configuration of the source cell for transmission.
  • the SPS / GF configuration mentioned in the embodiment of the present application refers to the SPS / GF configuration determined by the target cell according to the service model. This configuration is transmitted to the source base station and configured through the mobilitycontrolinfo cell in the RRC reconfiguration information.
  • the UE If the UE is configured for mode 4 transmission in the target cell, it starts from the UE receiving the configuration information of the HO until the UE acquires the monitored resources and sends it using the SPS / GF configuration of the source cell.
  • the candidate exceptional resource is used for sending, or the SPS / GF resource is used for sending.
  • the UE may also perform mode switching between multiple modes. For example, when the UE switches from mode 3 to mode 4, during the mode switching process, the UE may use the above-mentioned SPS / GF resources for resource transmission until the UE detects available transmission resources in the resource pool where mode 4 is located.
  • the traffic model sent by the source base station to the target base station includes at least one or a combination of the following messages: service cycle, offset, PPPP, PPPR, message size, and the like.
  • the service period represents the period of the semi-static service when the UE is at the source base station.
  • PPPP and PPPR represent the priority requirements and reliability of this service in time.
  • Relative demand, message size is the packet size of this business.
  • the UE Since the UE needs to use the SPS / GF information configured by the target base station during the handover process, and there will be a certain synchronization error between the source base station and the target base station, it is necessary to align the synchronization error between the two base stations in order to configure the adapted offset information to Match business. Therefore, the UE needs to measure the SFN offset between the two base stations and report to the source base station.
  • the report can be completed through the base station configuration reporting or the UE autonomous reporting method, and the reporting can be one-time or periodic reporting, and can bear On RRC signaling or MAC CE signaling; at the same time, the source base station needs to send the synchronization error (SFN offset) between the base stations to the target base station in the HO request.
  • the source base station can also carry the UE's frequency information of interest in the HO request message to facilitate the target base station to configure the SL CA for the UE.
  • the source base station can also carry the PPPR information in the HO request message, so that the target base station can configure SL duplication for the UE.
  • the HO request message carries the CBR measurement result and the GPS information of the UE to assist the target base station in scheduling.
  • the CBR measurement result may include the measurement result of the resource pool used by mode 3 and the measurement result of the resource pool used by mode 4.
  • the target base station when the target base station carries the SLS / GF resource configuration information of the target cell through the HOACK of the X2 port, the target base station needs to send one or more SPS / GF configuration information to the target base station, where each piece of GF configuration information is at least It includes one of the following information: time-frequency resources, period, offset, MCS, transmit power, etc.
  • Each piece of SPS information includes: period, offset, time domain resource location, frequency domain resource location, MCS level, etc. If the UE supports multiple copies, the parameters of each share are the same and the parameter values are different. If there are multiple copies, the condition ID of each share needs to be identified. If the UE has multiple copies of different types of services to send, the UE can request multiple copies of the resources, and the target base station can configure multiple copies of the resources accordingly when configuring the resources.
  • the target base station needs to indicate what kind of resource pool this exceptional pool is in.
  • the source base station needs to further indicate the configured exceptional pool when performing RRC reconfiguration of the UE.
  • the standard is used so that the UE uses the corresponding transmission parameters for adaptation when receiving this resource.
  • SPS / GF configuration effective time optional, when the UE receives the RRC reconfiguration information of the source base station, the configuration information of the HO received from the UE starts to be sent using the SPS / GF configuration of the source cell, or the UE feeds back to the target base station It takes effect when the configuration is complete, or when the RAR message of the target cell is received from the UE, or when the MSG4 of the target cell is received, the SPS / GF configuration of the source cell is used for sending.
  • conditional HO that is, the UE initiates a handover to the target cell when a certain special condition is reached
  • the SPS / GF configuration takes effect when the UE reaches a certain condition or threshold configured or predefined by the base station .
  • the SPS / GF configuration failure time is RRC SPS / GF reconfiguration of the target cell; when the UE When the target base station is configured as mode 4, the failure time of the SPS / GF configuration is that the UE obtains available resources after sensing on the mode 4 resources of the target cell.
  • the UE when the UE fails in the HO process, if the UE has configured an exceptional resource, it can fall back to the exceptional resource for transmission, and use SPS / GF resources during the handover process. If the handover fails and there is an allocation When using the exceptional pool resource, you can use the exceptional pool resource. If the UE does not have exceptional resources, it may continue to use the source cell configuration, but it is actually the SPS / GF resources of the target cell for transmission. Or the UE can also send a HO failure message to the source base station to instruct the base station to reconfigure the transmission resources. In this case, the HO fails. What resources at this time depends on the implementation behavior of the source base station. It may be a dynamically scheduled resource or it may be It is a semi-static SPS / GF resource.
  • the SPS / GF resources configured by the target base station are used in the handover process to reduce collision probability and improve transmission reliability.
  • FIG. 6 is a schematic flowchart of interaction between a UE, a source base station, a target base station, and an MME according to an embodiment of the present application.
  • the V-UE sends a measurement report to the source base station to trigger a handover.
  • the source base station decides to start a handover procedure according to the measurement result reported by the UE, and sends a HO request to the MME.
  • the MME sends a HO request to the target base station.
  • the target base station sends a HO acknowledgement to the MME.
  • the MME sends a HO acknowledgement to the source base station.
  • the source base station sends RRC reconfiguration information to the V-UE, performs RRC reconfiguration, requires the V-UE to perform handover, and configures exceptionalpool resource information.
  • the UE initiates the target base station to send random access, and performs handover.
  • T304 is a timer started when the UE receives RRC reconfiguration information with mobility control information (mobilityControlInfo), and stops the timer counting after the random access of the new cell is completed.
  • mobilityControlInfo mobility control information
  • the HO request and HOACK are transmitted through the S1 port and forwarded through the MME.
  • the S1 interface is the interface between the base station and the MME.
  • the corresponding carriers of the SL model and SPS / GF configuration information in the foregoing embodiment are changed to S1 ports. That is, the aforementioned SL model and SPS / GF configuration information are transmitted through the S1 port.
  • the base station in the above embodiment is not limited to being an LTE eNB or a gNB in NR, and the type of core network to which the base station is connected is not limited. It can be an evolved packet core network (EPC) or 5G in a 4G system. 5G core network (5G Core, 5GC) in the system.
  • EPC evolved packet core network
  • 5G Core 5G Core
  • the HO request and HO ACK messages in the above embodiment can be further superimposed into ordinary transmission messages between base stations, and a specific expression thereof can be HO request and HO ACK.
  • the HO request is that the source base station sends at least one of the following information to the target base station at X2 / Xn (X2 port is available) or S1 / NG (X2 is not available):
  • Traffic model business cycle, offset, PPPP, PPPR, etc.
  • Synchronization information between base stations SFN offset between stations is used to assist in configuring SPS offset. Because the UE needs to use the SPS / GF information configured by the target base station during the handover process, and there will be a certain synchronization error between the source base station and the target base station, it is necessary to align the synchronization error between the two base stations in order to configure the adapted offset information To match business.
  • Frequency point information of interest to the UE Frequency point information of interest to the UE.
  • the HOACK is the target base station sending at least one of the following information to the source base station at X2 / Xn (X2 port is available) or S1 / NG (X2 is not available): the HOSACK of the X2 port carries the SLS / GF resources of the target cell Configuration information, while carrying the SL CA configuration and SL duplication configuration of the target cell through the X2 port.
  • the SPS / GF resources configured by the target base station are used in the handover process to reduce the collision probability and improve the reliability.
  • the need to re-measure SL conditions and configure SPS / GF delay after switching to a new cell is reduced.
  • the radio access network device is specifically a first radio access network device 700 and the first radio access network device 700. include:
  • a sending module 702 configured to send service model information of the first terminal device to a second radio access network device
  • the receiving module 701 is configured to receive first resource configuration information sent by the second radio access network device;
  • a processing module 703 is configured to determine, according to the first resource configuration information, transmission resources required by the first terminal device to transmit data on a side link SL during a handover process, where the handover process refers to the first A terminal device switches from the first radio access network device to the second radio access network device, and the side link is a communication link between the first terminal device and the second terminal device ;
  • the sending module 702 is configured to send a configuration message to the first terminal device
  • the configuration message includes: the first resource configuration information; or
  • the configuration message includes: second resource configuration information generated by the first radio access network device based on the first resource configuration information, and the second resource configuration information includes: the first terminal device is switching the Transmission resources required for transmitting data on the side link in the process.
  • the sending module 702 is further configured to perform any one or any of the following operations:
  • inter-station synchronization information is used to indicate a system frame number between the first radio access network device and the second radio access network device SFN offset information;
  • any one or more of the following information is carried in the handover request: the service model information, the frequency point information supported by the first terminal device, a CBR measurement result, and the Location information of a first terminal device, the inter-station synchronization information, and the network standard request information;
  • the handover request is sent by the first radio access network device to the second radio access network device.
  • the receiving module 701 is further configured to perform the following operations:
  • the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration information and multiplexing configuration information.
  • the radio access network device is specifically a second radio access network device 800, and the second radio access network device 800. include:
  • a receiving module 801, configured to receive service model information of a first terminal device sent by a first radio access network device
  • a processing module 802 configured to determine, according to the service model information of the first terminal device, a transmission resource required by the first terminal device to transmit data on the side link SL during a handover process, where the handover process refers to The first terminal device switches from the first radio access network device to the second radio access network device, and the side link is between the first terminal device and the second terminal device Communication link
  • the sending module 803 is configured to send first resource configuration information to the first radio access network device, where the first resource configuration information includes the transmission resource.
  • the receiving module 801 is further configured to perform any one or any of the following operations:
  • inter-station synchronization information sent by the first radio access network device where the inter-site synchronization information is used to indicate a system frame between the first radio access network device and the second radio access network device No. SFN offset information; or,
  • processing module 802 is further configured to perform any one or any of the following operations:
  • the sending module 803 is further configured to perform the following operations:
  • the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration information and multiplexing configuration information.
  • the terminal device is specifically a first terminal device 900.
  • the first terminal device 900 includes:
  • a sending module 901, configured to send service model information of the first terminal device to a first radio access network device
  • a receiving module 902 configured to receive a configuration message sent by the first radio access network device
  • a processing module 903 is configured to determine first resource configuration information according to the configuration message, or second resource configuration information generated by the first radio access network device based on the first resource configuration information, where the first resource configuration
  • the information includes: transmission resources required for the first terminal device to transmit data on the side link SL during a handover process, and the handover process refers to the first terminal device from the first wireless access network
  • the device switches to the second radio access network device, the side link is a communication link between the first terminal device and the second terminal device, and the second resource configuration information includes: the Transmission resources required by the first terminal device to transmit data on the side link during the handover process;
  • the sending module 901 is configured to use the transmission resource to transmit data to the second terminal device.
  • the sending module 901 is further configured to perform any one or any of the following operations:
  • inter-station synchronization information Sending inter-station synchronization information to the first radio access network device, where the inter-station synchronization information is used to indicate a system frame number between the first radio access network device and the second radio access network device SFN offset information; or,
  • the receiving module 902 is further configured to perform the following operations:
  • the third resource configuration information includes at least one of the following information: carrier aggregation CA configuration information and multiplexing configuration information.
  • the sending module 901 is further configured to perform the following operations:
  • the first terminal device uses mode 3 transmission, it starts from the receiving of the configuration message by the first terminal device, until the cell to which the first terminal device switches is reconfigured, and uses the transmission resources to the The second terminal device transmits data; or
  • the first terminal device When the first terminal device transmits in mode 4, it starts from receiving the configuration message by the first terminal device, until the monitored resource is obtained by the first terminal device, and uses the transmission resource to the The second terminal device transmits data.
  • the first radio access network device and the core network device establish a communication connection
  • the second radio access network device and the core network device establish a communication connection
  • Information is forwarded between the first radio access network device and the second radio access network device through the core network device.
  • the service model information further includes any one or more of the following information: service cycle information, time offset information of a service relative to a system frame number, and a side link Data packet priority PPPP information, sidelink data packet reliability PPPR information, or service packet size information.
  • the processing module 802 of the second radio access network device is further configured to perform any one or any of the following operations:
  • An embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a program, and the program executes including some or all of the steps described in the foregoing method embodiments.
  • the first radio access network device 1000 includes:
  • the receiver 1001, the transmitter 1002, the processor 1003, and the memory 1004 (the number of the processors 1003 in the first radio access network device 1000 may be one or more, and one processor is taken as an example in FIG. 10).
  • the receiver 1001, the transmitter 1002, the processor 1003, and the memory 1004 may be connected through a bus or other manners. In FIG. 10, the connection through the bus is taken as an example.
  • the memory 1004 may include a read-only memory and a random access memory, and provide instructions and data to the processor 1003. A part of the memory 1004 may further include a non-volatile random access memory (NVRAM).
  • the memory 1004 stores an operating system and an operation instruction, an executable module or a data structure, or a subset thereof, or an extended set thereof.
  • the operation instruction may include various operation instructions for implementing various operations.
  • the operating system may include various system programs for implementing various basic services and processing hardware-based tasks.
  • the processor 1003 controls the operation of the first radio access network device.
  • the processor 1003 may also be referred to as a central processing unit (CPU).
  • CPU central processing unit
  • the components of the first radio access network device are coupled together through a bus system.
  • the bus system may include a power bus, a control bus, and a status signal bus in addition to a data bus.
  • various buses are called bus systems in the figure.
  • the method disclosed in the embodiments of the present application may be applied to the processor 1003, or implemented by the processor 1003.
  • the processor 1003 may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1003 or an instruction in the form of software.
  • the processor 1003 may be a general-purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field-programmable gate array (FPGA), or field-programmable gate array (FPGA), or Other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • FPGA field-programmable gate array
  • FPGA field-programmable gate array
  • Other programmable logic devices discrete gate or transistor logic devices, discrete hardware components.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly embodied as being executed by a hardware decoding processor, or may be executed and completed by using a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in the memory 1004, and the processor 1003 reads the information in the memory 1004 and completes the steps of the above method in combination with its hardware.
  • the receiver 1001 may be used to receive inputted digital or character information, and generate signal inputs related to related settings and function control of the first radio access network device.
  • the transmitter 1002 may be used to output digital or character information through an external interface.
  • the processor 1003 is configured to execute the data transmission method performed by the first radio access network device in the foregoing embodiment.
  • the second radio access network device 1100 includes:
  • the receiver 1101, the transmitter 1102, the processor 1103, and the memory 1104 (the number of the processors 1103 in the second radio access network device 1100 may be one or more, and one processor is taken as an example in FIG. 11).
  • the receiver 1101, the transmitter 1102, the processor 1103, and the memory 1104 may be connected through a bus or other manners. In FIG. 11, a connection through a bus is used as an example.
  • the memory 1104 may include a read-only memory and a random access memory, and provide instructions and data to the processor 1103. A part of the memory 1104 may further include NVRAM.
  • the memory 1104 stores an operating system and operation instructions, executable modules or data structures, or a subset thereof, or an extended set thereof.
  • the operation instructions may include various operation instructions for implementing various operations.
  • the operating system may include various system programs for implementing various basic services and processing hardware-based tasks.
  • the processor 1103 controls operations of the second radio access network device.
  • the processor 1103 may also be referred to as a CPU.
  • the components of the second radio access network device are coupled together through a bus system.
  • the bus system may include a power bus, a control bus, and a status signal bus in addition to a data bus.
  • various buses are called bus systems in the figure.
  • the method disclosed in the foregoing embodiment of the present application may be applied to the processor 1103, or the processor 1103 may implement the second radio access network device.
  • the processor 1103 may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1103 or an instruction in the form of software.
  • the processor 1103 may be a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, a discrete gate or transistor logic device, or a discrete hardware component.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in the memory 1104, and the processor 1103 reads the information in the memory 1104 and completes the steps of the foregoing method in combination with its hardware.
  • the processor 1103 is configured to execute the data transmission method performed by the foregoing second radio access network device.
  • the first terminal device 1200 includes:
  • the receiver 1201, the transmitter 1202, the processor 1203, and the memory 1204 (wherein the number of the processors 1203 in the first terminal device 1200 may be one or more, and one processor is taken as an example in FIG. 12).
  • the receiver 1201, the transmitter 1202, the processor 1203, and the memory 1204 may be connected through a bus or other manners. In FIG. 12, a connection through a bus is taken as an example.
  • the memory 1204 may include a read-only memory and a random access memory, and provide instructions and data to the processor 1203. A part of the memory 1204 may further include NVRAM.
  • the memory 1204 stores an operating system and an operation instruction, an executable module or a data structure, or a subset thereof, or an extended set thereof.
  • the operation instruction may include various operation instructions for implementing various operations.
  • the operating system may include various system programs for implementing various basic services and processing hardware-based tasks.
  • the processor 1203 controls operations of the first terminal device, and the processor 1203 may also be referred to as a CPU.
  • various components of the first terminal device are coupled together through a bus system.
  • the bus system may include a power bus, a control bus, and a status signal bus in addition to a data bus.
  • various buses are called bus systems in the figure.
  • the method disclosed in the embodiment of the present application may be applied to the processor 1203, or the processor 1203 may implement the first terminal device.
  • the processor 1203 may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1203 or an instruction in the form of software.
  • the processor 1203 may be a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, a discrete gate or transistor logic device, or a discrete hardware component.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware decoding processor, or may be performed by using a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like.
  • the storage medium is located in the memory 1204, and the processor 1203 reads the information in the memory 1204 and completes the steps of the foregoing method in combination with its hardware.
  • the processor 1203 is configured to execute the data transmission method performed by the foregoing first terminal device.
  • the chip when the device is a chip in a terminal, the chip includes a processing unit and a communication unit.
  • the processing unit may be, for example, a processor, and the communication unit may be, for example, an input / output interface, Pins or circuits, etc.
  • the processing unit may execute computer execution instructions stored in the storage unit, so that a chip in the terminal executes the wireless communication method according to any one of the first aspects.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc.
  • the storage unit may also be a storage unit in the terminal that is located outside the chip, such as a read-only memory (read -only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), etc.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned above may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more An integrated circuit for controlling program execution of the wireless communication method of the first aspect described above.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the device embodiments described above are only schematic, and the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be A physical unit can be located in one place or distributed across multiple network units. Some or all of the modules may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • the connection relationship between the modules indicates that there is a communication connection between them, which can be specifically implemented as one or more communication buses or signal lines.
  • the technical solution of this application that is essentially or contributes to the existing technology can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer's floppy disk , U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk, etc., including a number of instructions to enable a computer device (may be a personal computer, server, or network device, etc.) to execute the various implementations of this application Example method.
  • a readable storage medium such as a computer's floppy disk , U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk, etc.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center.
  • wire for example, coaxial cable, optical fiber, digital subscriber line (DSL)
  • wireless for example, infrared, wireless, microwave, etc.
  • the computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Abstract

本申请实施例公开了一种数据传输方法和无线接入网设备及终端设备，用于提高终端设备在切换过程中的数据传输可靠性,提高通信效率。本申请实施例提供一种数据传输方法，包括：第一无线接入网设备接收第一终端设备发送的第一终端设备的业务模型信息；第一无线接入网设备向第二无线接入网设备发送第一终端设备的业务模型信息；第一无线接入网设备接收第二无线接入网设备发送的第一资源配置信息，第一资源配置信息包括：第一终端设备在切换过程中在侧行链路上传输数据所需的传输资源；第一无线接入网设备向第一终端设备发送配置消息；配置消息包括：第一资源配置信息，或者第一无线接入网设备基于第一资源配置信息产生的第二资源配置信息。

Description

一种数据传输方法和无线接入网设备及终端设备
本申请要求于2018年8月31日提交中国专利局、申请号为201811011314.6、发明名称为“一种数据传输方法和无线接入网设备及终端设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种数据传输方法和无线接入网设备及终端设备。
背景技术
车联网(vehicle to everything，V2X)，被认为是物联网体系中最有产业潜力、市场需求最明确的领域之一，具有应用空间广、产业潜力大、社会效益强的特点，对促进汽车和信息通信产业创新发展，构建汽车和交通服务新模式新业态，推动自动驾驶技术创新和应用，提高交通效率和安全水平具有重要意义。车联网是指通过装载在车上的传感器、车载终端等提供车辆信息，并通过各种通信技术实现车与车(vehicle to vehicle,V2V)、车与人(vehicle to pedestrian，V2P)、车与路边基础设施(vehicle to infrastructure)之间进行相互通信，其中V2V为主要的讨论场景。
伴随着移动通信的发展，新兴业务对移动系统的时延和可靠性需求随之更加严苛，如何满足低时延高可靠的需求就是当前各种通信系统的讨论热点之一。侧行链路(sidelink，SL)指的是车与车之间直连通信的通信链路，车与车之间直连通信的空口定义为PC5口。现有技术中提供的V2X切换流程中，车辆用户设备(vehicle user equipment，V-UE)切换至新小区后，需要重新测量SL情况并进行资源配置，从而增加了V-UE切换后的传输时延，降低了通信效率。
发明内容
本申请实施例提供了一种数据传输方法和无线接入网设备及终端设备，用于减小终端设备切换后的传输时延，提高终端设备在切换过程中的数据传输可靠性,提高通信效率。
为解决上述技术问题，本申请实施例提供以下技术方案：
第一方面，本申请实施例提供一种数据传输方法，应用于第一无线接入网设备，包括：所述第一无线接入网设备接收第一终端设备发送的所述第一终端设备的业务模型信息；所述第一无线接入网设备向第二无线接入网设备发送所述第一终端设备的业务模型信息；所述第一无线接入网设备接收所述第二无线接入网设备发送的第一资源配置信息，所述第一资源配置信息包括：所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；所述第一无线接入网设备向所述第一终端设备发送配置消息；其中，所述配置消息包括：所述第一资源配置信息；或者，所述配置消息包括：所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第二资源配置信息包括：所述第一终端设 备在所述切换过程中在所述侧行链路上传输数据所需的传输资源。
在本申请实施例中，第一无线接入网设备可以将第一终端设备的业务模型信息发送给第二无线接入网设备，从而第二无线接入网设备可以根据第一终端设备的业务模型信息确定第一终端设备在切换过程中在SL上传输数据所需的传输资源，第二无线接入网设备发送携带有该传输资源的第一资源配置信息给第一无线接入网设备，第一无线接入网设备可以向第一终端设备发送配置消息，从而第一终端设备可以通过该配置消息获取到第二无线接入网设备所确定的传输资源，第一终端设备使用该传输资源向第二终端设备传输数据。本申请实施例中通过第二无线接入网设备根据第一终端设备的业务模型信息为第一终端设备确定在切换过程中在SL上传输数据所需的传输资源，使得第一终端设备可以使用该传输资源与第二终端设备进行数据传输，因此减小了终端设备切换后的传输时延，提高终端设备在切换过程中的数据传输可靠性,提高通信效率。
在第一方面的一种可能的实现方式中，所述方法还包括如下任一或任几种操作：所述第一无线接入网设备向所述第二无线接入网设备发送所述第一终端设备支持的频点信息；或者，所述第一无线接入网设备向所述第二无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，所述第一无线接入网设备向所述第二无线接入网设备发送所述第一终端设备的位置信息；或者，所述第一无线接入网设备向所述第二无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，所述第一无线接入网设备向所述第二无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在本申请的上述实施例中，第一终端设备支持的频点信息可以通过RRC信令上报给第一无线接入网设备，例如可以该第一终端设备支持的频点信息通过RRC中的侧行链路终端信息上报给第一无线接入网设备。第一终端设备还可以生成CBR测量结果，CBR测量结果是第一终端设备对时频资源忙闲监测后得到的结果，可以辅助第二无线接入网设备进行传输资源的配置。第一终端设备的位置信息是指第一终端设备当前所处的地理位置，第一终端设备的位置信息用于第二无线接入网设备为该第一终端设备分配传输资源。站间同步信息用于指示第一无线接入网设备和第二无线接入网设备之间的系统帧号偏移信息，即站间同步信息用于表示两个无线接入网设备之间的同步时间误差偏移量，第一终端设备可以主动的向第一无线接入网设备发送站间同步信息。第一终端设备还可以生成网络制式请求信息，向第一无线接入网设备发送网络制式请求信息，网络制式请求信息用于向第二无线接入网设备请求传输资源对应的网络制式。其中，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。第二无线接入网设备指示此传输资源对应于何种网络制式，同时第一无线接入网设备在对第一终端设备进行RRC重配时也需要进一步指示配置的传输资源是何种制式使用的，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。
在第一方面的一种可能的实现方式中，如下信息中的任一种或任几种携带在切换请求中：所述业务模型信息，所述第一终端设备支持的频点信息，CBR测量结果，所述第一终端设备的位置信息，所述站间同步信息，所述网络制式请求信息；其中，所述切换请求由 所述第一无线接入网设备向所述第二无线接入网设备发送。
在本申请的上述实施例中，第一终端设备向第一无线接入网设备发送测量报告，以触发切换，第一无线接入网设备根据第一终端设备上报的测量报告决定启动切换流程，第一无线接入网设备向第二无线接入网设备发送切换请求，该切换请求中携带有如下信息中的任一种或任几种携带在切换请求中：业务模型信息，第一终端设备支持的频点信息，CBR测量结果，第一终端设备的位置信息，站间同步信息，网络制式请求信息。通过切换请求可以实现第一无线接入网设备向第二无线接入网设备发送如下信息中的任一种或任几种携带在切换请求中：第一终端设备的业务模型信息，第一终端设备支持的频点信息，CBR测量结果，第一终端设备的位置信息，站间同步信息，网络制式请求信息。
在第一方面的一种可能的实现方式中，所述方法还包括：所述第一无线接入网设备接收所述第二无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，所述第一无线接入网设备接收所述第二无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
在本申请的上述实施例中，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。例如，第二无线接入网设备向第一无线接入设备发送HO ACK，该HO ACK携带目标小区的资源配置信息时，需要进一步指示此传输资源为LTE制式的还是NR制式使用的。第二无线接入网设备可以向第一无线接入网设备发送网络制式指示信息，因此第一无线接入网设备可以从第二无线接入网设备获取到该网络制式指示信息。第二无线接入网设备向第一无线接入网设备发送第三资源配置信息，该第三资源配置信息包括CA配置信息、多路复用配置信息，从而第一无线接入网络设备可以从第二无线接入网设备获取到第三资源配置信息，第一无线接入网设备可以获取到第二无线网设备生成的CA配置信息、多路复用配置信息。
第二方面，本申请实施例提供一种数据传输方法，包括：第二无线接入网设备接收第一无线接入网设备发送的第一终端设备的业务模型信息；所述第二无线接入网设备根据所述第一终端设备的业务模型信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；所述第二无线接入网设备向所述第一无线接入网设备发送第一资源配置信息，所述第一资源配置信息包括所述传输资源。
在本申请实施例中，第二无线接入网设备可以根据第一终端设备的业务模型信息确定第一终端设备在切换过程中在SL上传输数据所需的传输资源，第二无线接入网设备发送携带有该传输资源的第一资源配置信息给第一无线接入网设备，第一无线接入网设备可以向第一终端设备发送配置消息，从而第一终端设备可以通过该配置消息获取到第二无线接入网设备所确定的传输资源，第一终端设备使用该传输资源向第二终端设备传输数据。本申请实施例中通过第二无线接入网设备根据第一终端设备的业务模型信息为第一终端设备确定在切换过程中在SL上传输数据所需的传输资源，使得第一终端设备可以使用该传输资源与第二终端设备进行数据传输，因此减小了终端设备切换后的传输时延，提高终端设备在 切换过程中的数据传输可靠性,提高通信效率。
在第二方面的一种可能的实现方式中，所述方法还包括：所述第二无线接入网设备接收所述第一无线接入网设备发送的所述第一终端设备支持的频点信息；或者，所述第二无线接入网设备接收所述第一无线接入网设备发送的所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，所述第二无线接入网设备接收所述第一无线接入网设备发送的所述第一终端设备的位置信息；或者，所述第二无线接入网设备接收所述第一无线接入网设备发送的站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，所述第二无线接入网设备接收所述第一无线接入网设备发送的网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在第二方面的一种可能的实现方式中，所述方法，还包括：所述第二无线接入网设备根据所述第一终端设备支持的频点信息为所述第一终端设备配置载波；或者，所述第二无线接入网设备根据所述CBR测量结果为所述第一终端设备确定所述传输资源的位置；或者，所述第二无线接入网设备根据所述第一终端设备的位置信息为所述第一终端设备确定所述第一终端设备所在区域对应的资源位置；或者，所述第二无线接入网设备根据所述站间同步信息校正所述传输资源的时域位置。
在本申请的上述实施例中，第二无线接入网设备可以获取到第一终端设备支持的频点信息，第二无线接入网设备解析该第一终端设备支持的频点信息，然后确定终端设备数据传输对应载波信息。第二无线接入网设备可以获取到CBR测量结果，第二无线接入网设备通过解析该CBR测量结果确定出时频资源的闲忙状态，从而可以根据CBR测量结果为第一终端设备确定数据传输对应的时频资源。第二无线接入网设备可以获取到第一终端设备的位置信息，然后确定出与第一终端设备所在地理区域对应的时频资源。第二无线接入网设备可以获取到站间同步信息，然后根据该站间同步信息对传输资源的时域位置进行校正。不限定的是，本申请的另一些实施例中，第二无线接入网设备还可以不对传输资源的时域位置进行校正，而是由第一无线接入网设备根据站间同步信息对传输资源的时域位置进行校正。第二无线接入网设备可以通过第一无线接入网设备获取到网络制式请求信息，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。
在第二方面的一种可能的实现方式中，所述方法还包括：所述第二无线接入网设备向所述第一无线接入网设备发送网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，所述第二无线接入网设备向所述第一无线接入网设备发送第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
在本申请的上述实施例中，第二无线接入网设备可以获取到网络制式请求信息，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。需要第二无线接入网设备指示此传输资源对应于何种网络制式，同时第一无线接入网设备在对第一终端设备进行RRC重配时也需要进一步指示配置的传输资源是何种制式使用的，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。第二无线接入网设备还可以为第一终端设备生成CA配置信息、多路复用(duplication)配置信息。举例说明如下， 第二无线接入网设备可以获取到第一终端设备支持的频点信息，从而根据该第一终端设备支持的频点信息配置CA时所使用的载波，生成上述CA配置信息。又如，第二无线接入网设备可以根据第一终端设备的业务可靠性需求，生成上述多路复用配置信息，例如，第二无线接入网设备可以获取到第一终端设备生成的PPPR信息，PPPR信息可以辅助第二无线接入网设备确定是否使用多路复用，例如PPPR低于某个值时使用多路复用。第二无线接入网设备向第一无线接入网设备发送第三资源配置信息，该第三资源配置信息包括CA配置信息、多路复用配置信息。
第三方面，本申请实施例提供一种数据传输方法，包括：第一终端设备向第一无线接入网设备发送所述第一终端设备的业务模型信息；所述第一终端设备接收所述第一无线接入网设备发送的配置消息，所述配置消息包括：第一资源配置信息；或者，所述配置消息包括：所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第一资源配置信息包括：所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源；所述第一终端设备使用所述传输资源向所述第二终端设备传输数据。
在本申请实施例中，第一无线接入网设备可以将第一终端设备的业务模型信息发送给第二无线接入网设备，从而第二无线接入网设备可以根据第一终端设备的业务模型信息确定第一终端设备在切换过程中在SL上传输数据所需的传输资源，第二无线接入网设备发送携带有该传输资源的第一资源配置信息给第一无线接入网设备，第一无线接入网设备可以向第一终端设备发送配置消息，从而第一终端设备可以通过该配置消息获取到第二无线接入网设备所确定的传输资源，第一终端设备使用该传输资源向第二终端设备传输数据。本申请实施例中通过第二无线接入网设备根据第一终端设备的业务模型信息为第一终端设备确定在切换过程中在SL上传输数据所需的传输资源，使得第一终端设备可以使用该传输资源与第二终端设备进行数据传输，因此减小了终端设备切换后的传输时延，提高终端设备在切换过程中的数据传输可靠性,提高通信效率。
在第三方面的一种可能的实现方式中，所述方法还包括如下任一或任几种操作：所述第一终端设备向所述第一无线接入网设备发送所述第一终端设备支持的频点信息；或者，所述第一终端设备向所述第一无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，所述第一终端设备向所述第一无线接入网设备发送所述第一终端设备的位置信息；或者，所述第一终端设备向所述第一无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，所述第一终端设备向所述第一无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在本申请的上述实施例中，第一终端设备支持的频点信息可以通过RRC信令上报给第一无线接入网设备，例如可以该第一终端设备支持的频点信息通过RRC中的侧行链路终端 信息上报给第一无线接入网设备。第一终端设备还可以生成CBR测量结果，CBR测量结果是第一终端设备对时频资源忙闲监测后得到的结果，可以辅助第二无线接入网设备进行传输资源的配置。第一终端设备的位置信息是指第一终端设备当前所处的地理位置，第一终端设备的位置信息用于第二无线接入网设备为该第一终端设备分配传输资源。站间同步信息用于指示第一无线接入网设备和第二无线接入网设备之间的系统帧号偏移信息，即站间同步信息用于表示两个无线接入网设备之间的同步时间误差偏移量，第一终端设备可以主动的向第一无线接入网设备发送站间同步信息。第一终端设备还可以生成网络制式请求信息，向第一无线接入网设备发送网络制式请求信息，网络制式请求信息用于向第二无线接入网设备请求传输资源对应的网络制式。其中，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。第二无线接入网设备指示此传输资源对应于何种网络制式，同时第一无线接入网设备在对第一终端设备进行RRC重配时也需要进一步指示配置的传输资源是何种制式使用的，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。
在第三方面的一种可能的实现方式中，所述方法还包括：所述第一终端设备接收所述第一无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，所述第一终端设备接收所述第一无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
在本申请的上述实施例中，第一终端设备发送网络制式请求信息，经过第一无线接入网设备的转发，第二无线接入网设备接收到该网络制式请求信息，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。同时第一无线接入网设备在对第一终端设备进行RRC重配时也需要进一步指示配置的传输资源是何种制式使用的，经过第一无线接入网设备的转发，第一终端设备可以接收到网络制式指示信息，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。第二无线接入网设备向第一无线接入网设备发送第三资源配置信息，经过第一无线接入网设备的转发，第一终端设备获取到第三资源配置信息，第三资源配置信息包括CA配置信息、多路复用配置信息，从而第一终端设备通过解析CA配置信息确定出第二无线接入网设备确定的CA，通过解析多路复用配置信息确定出是否启用多路复用。
在第三方面的一种可能的实现方式中，所述第一终端设备使用所述传输资源向所述第二终端设备传输数据，包括：当所述第一终端设备采用模式3传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备切换到的小区进行重配置，所述第一终端设备使用所述传输资源向所述第二终端设备传输数据；或者，当所述第一终端设备采用模式4传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备获取到监测后的资源，所述第一终端设备使用所述传输资源向所述第二终端设备传输数据。其中，在实现车与车之间进行相互通信过程中，V2V场景下定义了两种通信模式，分别是mode3和mode4，其中mode3可以理解为车与车之间的通信过程受基站控制，发送端车辆在基站调度的资源上发送控制信号和数据信号。在mode4中，发送端车辆的发送资源并不受基站控制，而是通过本身监测(sensing)信道的忙闲状态寻找合适的资源进行发送数据。 若第一终端设备在目标小区配置为mode3传输。从第一终端设备接收配置信息开始，直至目标小区的RRC重配置，使用源小区的传输资源进行数据发送。若第一终端设备在目标小区配置为mode4传输，从第一终端设备接收配置信息开始，直至第一终端设备获取监测后的资源，使用源小区的传输资源进行数据发送。
在第一方面或第二方面或者第三方面的一种可能的实现方式中，所述第一无线接入网设备和核心网设备建立有通信连接，所述第二无线接入网设备和所述核心网设备建立有通信连接；所述第一无线接入网设备和所述第二无线接入网设备之间通过所述核心网设备进行信息转发。
在第一方面或第二方面或者第三方面的一种可能的实现方式中，所述业务模型信息，包括如下信息中的任一种或任几种信息：业务周期信息，业务相对于系统帧号的时间偏移信息，侧行链路数据包优先级PPPP信息，侧行链路数据包可靠性PPPR信息，或者业务的包大小信息。
在第二方面的一种可能的实现方式中，所述第二无线接入网设备根据所述第一终端设备的业务模型信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，包括：所述第二无线接入网设备根据所述业务周期信息确定所述传输资源的资源周期；或者，所述第二无线接入网设备根据所述业务相对于系统帧号的时间偏移信息确定所述传输资源相对于起始系统帧号的时域位置；或者，所述第二无线接入网设备根据所述PPPP信息确定所述传输资源上承载的数据优先级；或者，所述第二无线接入网设备根据所述PPPR信息确定所述传输资源对应的可靠性需求、所述传输资源对应的信道质量；或者，所述第二无线接入网设备根据所述业务的包大小信息确定所述传输资源上承载的业务数据量。
在本申请的上述实施例中，其中，业务周期信息是指第一终端设备所传输的业务的传输周期，第二无线接入网设备可以根据业务周期信息确定传输资源的资源周期，周期性配置的传输资源可以用于周期性传输的业务。业务相对于SFN的时间偏移信息是指第一终端设备所传输的业务相对于固定的SFN的时间偏移量，即业务相对于SFN的时间偏移信息指示了第一终端设备所传输的业务的到达时刻，第二无线接入网设备可以根据业务相对于系统帧号的时间偏移信息确定传输资源相对于起始系统帧号的时域位置，使得第二无线接入网设备确定的传输资源能够被第一终端设备正确的解析得到。PPPP和PPPR分别代表了第一终端设备传输的业务在时间上的优先级需求和可靠性的相对需求，第二无线接入网设备可以根据PPPP信息确定传输资源上承载的数据优先级，从而实现不同优先级的数据使用不同的传输资源进行传输，还可以用于处理不同终端设备之间的调度优先级，第二无线接入网设备还可以根据PPPR信息确定传输资源对应的可靠性需求、传输资源对应的信道质量，从而保证第二无线接入网设备为第一终端设备不同PPPR需求的数据选择合适信道质量的传输资源。业务的包大小指的是第一终端设备所传输的业务的数据量大小，第二无线接入网设备可以根据业务的包大小信息确定传输资源上承载的业务数据量，从而为终端设备配置适量的资源，避免因业务的包过大导致无法传输的情况。
第四方面，本申请实施例还提供一种无线接入网设备，所述无线接入网设备具体为第一无线接入网设备，所述第一无线接入网设备，包括：接收模块，用于接收第一终端设备 发送的所述第一终端设备的业务模型信息；发送模块，用于向第二无线接入网设备发送所述第一终端设备的业务模型信息；所述接收模块，用于接收所述第二无线接入网设备发送的第一资源配置信息；处理模块，用于根据所述第一资源配置信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；所述发送模块，用于向所述第一终端设备发送配置消息；其中，所述配置消息包括：所述第一资源配置信息；或者，所述配置消息包括：所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源。
在第四方面的一种可能的实现方式中，所述发送模块，还用于执行如下任一或任几种操作：向所述第二无线接入网设备发送所述第一终端设备支持的频点信息；或者，向所述第二无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，向所述第二无线接入网设备发送所述第一终端设备的位置信息；或者，向所述第二无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，向所述第二无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在第四方面的一种可能的实现方式中，如下信息中的任一种或任几种携带在切换请求中：所述业务模型信息，所述第一终端设备支持的频点信息，CBR测量结果，所述第一终端设备的位置信息，所述站间同步信息，所述网络制式请求信息；其中，所述切换请求由所述第一无线接入网设备向所述第二无线接入网设备发送。
在第四方面的一种可能的实现方式中，所述接收模块，还用于执行如下操作：接收所述第二无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，接收所述第二无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
在本申请的第四方面中，第一无线接入网设备的组成模块还可以执行前述第一方面以及各种可能的实现方式中所描述的步骤，详见前述对第一方面以及各种可能的实现方式中的说明。
第五方面，本申请实施例还提供一种无线接入网设备，所述无线接入网设备具体为第二无线接入网设备，所述第二无线接入网设备，包括：接收模块，用于接收第一无线接入网设备发送的第一终端设备的业务模型信息；处理模块，用于根据所述第一终端设备的业务模型信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；发送模块，用于向所述第一无线接入网设备发送第一资源配置信息，所述第一资源配置信息包括所述传输资源。
在第五方面的一种可能的实现方式中，所述接收模块，还用于执行如下任一或任几种操作：接收所述第一无线接入网设备发送的所述第一终端设备支持的频点信息；或者，接收所述第一无线接入网设备发送的所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，接收所述第一无线接入网设备发送的所述第一终端设备的位置信息；或者，接收所述第一无线接入网设备发送的站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，接收所述第一无线接入网设备发送的网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在第五方面的一种可能的实现方式中，所述处理模块，还用于执行如下任一或任几种操作：根据所述第一终端设备支持的频点信息为所述第一终端设备配置载波；或者，根据所述CBR测量结果为所述第一终端设备确定所述传输资源的位置；或者，根据所述第一终端设备的位置信息为所述第一终端设备确定所述第一终端设备所在区域对应的资源位置；或者，根据所述站间同步信息校正所述传输资源的时域位置。
在第五方面的一种可能的实现方式中，所述发送模块，还用于执行如下操作：向所述第一无线接入网设备发送网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，向所述第一无线接入网设备发送第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
在本申请的第五方面中，第二无线接入网设备的组成模块还可以执行前述第二方面以及各种可能的实现方式中所描述的步骤，详见前述对第二方面以及各种可能的实现方式中的说明。
第六方面，本申请实施例还提供一种终端设备，所述终端设备具体为第一终端设备，所述第一终端设备，包括：发送模块，用于向第一无线接入网设备发送所述第一终端设备的业务模型信息；接收模块，用于接收所述第一无线接入网设备发送的配置消息；处理模块，用于根据所述配置消息确定第一资源配置信息，或者所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第一资源配置信息包括：所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源；所述发送模块，用于使用所述传输资源向所述第二终端设备传输数据。
在第六方面的一种可能的实现方式中，所述发送模块，还用于执行如下任一或任几种操作：向所述第一无线接入网设备发送所述第一终端设备支持的频点信息；或者，向所述第一无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，向所述第一无线接入网设备发送所述第一终端设备的位置信息；或者，向所述第一无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，向所述第一无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在第六方面的一种可能的实现方式中，所述接收模块，还用于执行如下操作：接收所述第一无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，接收所述第一无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
在第六方面的一种可能的实现方式中，所述发送模块，还用于执行如下操作：当所述第一终端设备采用模式3传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备切换到的小区进行重配置，使用所述传输资源向所述第二终端设备传输数据；或者，当所述第一终端设备采用模式4传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备获取到监测后的资源，使用所述传输资源向所述第二终端设备传输数据。
在第四方面、或者第五方面、或者第六方面的一种可能的实现方式中，所述第一无线接入网设备和核心网设备建立有通信连接，所述第二无线接入网设备和所述核心网设备建立有通信连接；所述第一无线接入网设备和所述第二无线接入网设备之间通过所述核心网设备进行信息转发。
在第四方面、或者第五方面、或者第六方面的一种可能的实现方式中，所述业务模型信息，包括如下信息中的任一种或任几种信息：业务周期信息，业务相对于系统帧号的时间偏移信息，侧行链路数据包优先级PPPP信息，侧行链路数据包可靠性PPPR信息，或者业务的包大小信息。
在第五方面的一种可能的实现方式中，所述第二无线接入网设备的处理模块，还用于执行如下任一或任几种操作：根据所述业务周期信息确定所述传输资源的资源周期；或者，根据所述业务相对于系统帧号的时间偏移信息确定所述传输资源相对于起始系统帧号的时域位置；或者，根据所述PPPP信息确定所述传输资源上承载的数据优先级；或者，根据所述PPPR信息确定所述传输资源对应的可靠性需求、所述传输资源对应的信道质量；或者，根据所述业务的包大小信息确定所述传输资源上承载的业务数据量。
在本申请的第六方面中，第一终端设备的组成模块还可以执行前述第三方面以及各种可能的实现方式中所描述的步骤，详见前述对第三方面以及各种可能的实现方式中的说明。
第七方面，本申请实施例提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述第一方面、第二方面或者第三方面所述的方法。
第八方面，本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面、第二方面或者第三方面所述的方法。
第九方面，本申请实施例提供一种通信装置，该通信装置可以包括设备或者芯片等实体，所述通信装置包括：处理器，所述处理器用于执行程序指令，使得所述通信装置执行如前述第一方面或第二方面或第三方面中任一项所述的方法。所述通信装置实现如下任一设备的功能：第一无线接入网设备，第二无线接入网设备，或者第一终端设备。该通信装置也可以是一种系统芯片，应用于所述第一无线接入网设备，所述第二无线接入网设备，或者所述第一终端设备。
在第九方面的一种可能实现方式中，通信装置还包括：存储器；所述存储器用于存储程序指令。
第十方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于支持第一无线接入网设备，第二无线接入网设备，或者第一终端设备分别实现上述第一方面、第二方面或者第三方面中所涉及的功能，例如，发送或处理上述方法中所涉及的数据和/或信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存第一无线接入网设备，第二无线接入网设备，或者第一终端设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
附图说明
图1为本申请实施例提供的数据传输方法应用的一种系统架构示意图；
图2为本申请实施例提供的数据传输方法应用的另一种系统架构示意图；
图3为本申请实施例提供的一种数据传输方法的流程方框示意图；
图4为本申请实施例提供的一种UE、源基站、目标基站之间的交互流程示意图；
图5为本申请实施例提供的另一种UE、源基站、目标基站之间的交互流程示意图；
图6为本申请实施例提供的一种UE、源基站、目标基站、MME之间的交互流程示意图；
图7为本申请实施例提供的一种第一终端设备的组成结构示意图；
图8为本申请实施例提供的一种第一无线接入网设备的组成结构示意图；
图9为本申请实施例提供的一种第二无线接入网设备的组成结构示意图；
图10为本申请实施例提供的另一种第一终端设备的组成结构示意图；
图11为本申请实施例提供的另一种第一无线接入网设备的组成结构示意图；
图12为本申请实施例提供的另一种第二无线接入网设备的组成结构示意图。
具体实施方式
本申请实施例提供了一种数据传输方法和无线接入网设备及终端设备，用于减小终端设备切换后的传输时延，提高终端设备在切换过程中的数据传输可靠性,提高通信效率。
下面结合附图，对本申请的实施例进行描述。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，这仅仅是描述本申请的实施例中对相同属性的对象在描述时所采用的区分方式。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，以便包含一系列单元的过程、方法、系统、产品或设备不必限于那些单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它单元。
本申请实施例的技术方案可以应用于一种通信系统，如图1所示，本申请实施例提供的通信系统中至少可以包括:两个无线接入网设备和两个终端设备，两个无线接入网设备分别是第一无线接入网设备和第二无线接入网设备，两个终端设备分别是第一终端设备和第二终端设备，其中，第一无线接入网设备是第一终端设备执行切换流程之前所在的无线接 入网设备，第二无线接入网设备是第二终端设备执行切换流程的目标无线接入网设备，第一终端设备指的是执行切换流程的终端设备，第二终端设备是指与第一终端设备进行通信的终端设备，第一终端设备和第二终端设备之间建立的通信链路为侧行链路。对于无线接入网设备、终端设备的具体实现方式，可以结合实际的应用场景来灵活选择，此处不做限定。
如图2所示，本申请实施例提供的通信系统中除了包括前述的两个无线接入网设备和两个终端设备之外，还包括核心网设备。在图2所示的通信系统架构中，终端设备通过无线的方式与无线接入网设备相连，无线接入网设备通过无线或有线方式与核心网设备连接。核心网设备与无线接入网设备可以是独立的不同的物理设备，也可以是将核心网设备的功能与无线接入网设备的逻辑功能集成在同一个物理设备上，还可以是一个物理设备上集成了部分核心网设备的功能和部分的无线接入网设备的功能。终端设备可以是固定位置的，也可以是可移动的。图2只是示意图，该通信系统中还可以包括其它网络设备，如还可以包括无线中继设备和无线回传设备，在图2中未画出。本申请的实施例对该通信系统中包括的核心网设备、无线接入网设备和终端设备的数量不做限定。
无线接入网设备是终端设备通过无线方式接入到该通信系统中的接入设备，可以是基站(NodeB)、演进型基站(eNodeB)、5G通信系统中的基站、未来通信系统中的基站或无线保真(wireless fidelity，WiFi)系统中的接入节点等，本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。
终端设备也可以称为终端(Terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。
无线接入网设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对无线接入网设备和终端设备的应用场景不做限定。
无线接入网设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过免授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和免授权频谱进行通信。无线接入网设备和终端设备之间以及终端设备和终端设备之间可以通过6吉兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对无线接入网设备和终端设备之间所使用的频谱资源不做限定。
本申请实施例涉及第一无线接入网设备与第二无线接入网设备、第一无线接入网设备和第一终端设备、第一终端设备和第二终端设备之间的交互过程。请参阅图3所示，本申 请一个实施例提供的数据传输方法，可以包括：
301、第一终端设备向第一无线接入网设备发送第一终端设备的业务模型信息。
在本申请实施例中，第一终端设备当前处于第一无线接入网设备管理的小区(即源小区)覆盖范围内，第一终端设备获取第一终端设备的业务模型信息，然后第一终端设备向第一无线接入网设备发送第一终端设备的业务模型信息(traffic model),例如，第一终端设备可以通过无线资源控制(radio resource control，RRC)信令中的UE辅助信息(assistance information)字段发送第一终端设备的业务模型信息。其中，第一终端设备的业务模型信息，也可以称为UE辅助信息(assistance information)，业务模型信息用于描述第一终端设备传输业务的相关属性，在实际的业务传输场景中，业务模型信息可以根据第一终端设备传输的业务确定业务模型信息所包括的内容。
在本申请的一些实施例中，业务模型信息，还包括如下信息中的任一种或任几种信息：业务周期信息，业务相对于系统帧号(system frame number，SFN)的时间偏移信息，侧行链路数据包优先级(prose per-packet priority，PPPP)信息，侧行链路数据包可靠性(prose per-packet reliability，PPPR)信息，或者业务的包大小信息。
其中，业务周期信息是指第一终端设备所传输的业务的传输周期，业务相对于SFN的时间偏移信息是指第一终端设备所传输的业务相对于固定的SFN(例如SFN＝0)的时间偏移量，即业务相对于SFN的时间偏移信息指示了第一终端设备所传输的业务的到达时刻，PPPP和PPPR分别代表了第一终端设备传输的业务在时间上的优先级需求和可靠性的相对需求，业务的包大小指的是第一终端设备所传输的业务的数据量大小。
在本申请的一些实施例中，第一终端设备除了执行前述步骤301之外，本申请实施例提供的数据传输方法还包括如下任一或任几种操作：
第一终端设备向第一无线接入网设备发送第一终端设备支持的频点信息；或者，
第一终端设备向第一无线接入网设备发送第一终端设备生成的信道忙碌比例(channel busy ratio，CBR)测量结果；或者，
第一终端设备向第一无线接入网设备发送第一终端设备的位置信息；或者，
第一终端设备向第一无线接入网设备发送站间同步信息，站间同步信息用于指示第一无线接入网设备和第二无线接入网设备之间的系统帧号偏移信息；或者，
第一终端设备向第一无线接入网设备发送网络制式请求信息，网络制式请求信息用于向第二无线接入网设备请求传输资源对应的网络制式。
其中，第一终端设备支持的频点信息也可以称为第一终端设备感兴趣的频点信息，第一终端设备支持的频点信息指的是该第一终端设备支持哪些频点，该第一终端设备支持的频点信息可以通过RRC信令上报给第一无线接入网设备，例如可以该第一终端设备支持的频点信息通过RRC中的侧行链路终端信息(SidelinkUEInformation)上报给第一无线接入网设备。
第一终端设备还可以生成CBR测量结果，CBR测量结果是第一终端设备对时频资源忙闲监测后得到的结果，可以辅助第二无线接入网设备进行传输资源的配置。该第一CBR测量结果也可以通过RRC信令上报给第一无线接入网设备。
第一终端设备的位置信息是指第一终端设备当前所处的地理位置，例如该位置信息具 体可以是第一终端设备的全球定位系统(global positioning system，GPS)信息，第一终端设备的位置信息用于第二无线接入网设备为该第一终端设备分配传输资源。该第一终端设备的位置信息也可以通过RRC信令上报给第一无线接入网设备。
第一终端设备还可以生成站间同步信息，站间同步信息用于指示第一无线接入网设备和第二无线接入网设备之间的系统帧号偏移信息，即站间同步信息用于表示两个无线接入网设备之间的同步时间误差偏移量，第一终端设备可以主动的向第一无线接入网设备发送站间同步信息，例如第一终端设备可以向第一无线接入网设备一次性的发送站间同步信息，也可以周期性的向第一无线接入网设备发送站间同步信息。另外，第一终端设备也可以按照第一无线接入网设备的配置来发送站间同步信息，对于第一终端设备发送站间同步信息的方式，此处不做限定。需要说明的是，周期性配置或者单次上报的情况都可以是通过第一无线接入网设备进行配置，例如周期上报的情况需要第一无线接入网设备为第一终端设备配置上报周期。
第一终端设备还可以生成网络制式请求信息，向第一无线接入网设备发送网络制式请求信息，网络制式请求信息用于向第二无线接入网设备请求传输资源对应的网络制式。其中，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。例如，第二无线接入网设备向第一无线接入设备发送切换确认(handover ACK，HO ACK)，该HO ACK携带目标小区的资源配置信息时，需要进一步指示此传输资源为长期演进(long term evolution，LTE)制式的还是新空口(new radio，NR)制式使用的，因为在现有的部署中，有可能会出现同一个第一终端设备同时具备LTE SL和NR SL的能力，因此需要第二无线接入网设备指示此传输资源对应于何种网络制式，同时第一无线接入网设备在对第一终端设备进行RRC重配时也需要进一步指示配置的传输资源是何种制式使用的，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。
302、第一无线接入网设备接收第一终端设备发送的第一终端设备的业务模型信息。
在本申请实施例中，第一无线接入网设备用于管理第一终端设备在切换之前所处的源小区，第一终端设备向第一无线接入网设备发送第一终端设备的业务模型信息，第一无线接入网设备通过无线网络可以接收到第一终端设备的业务模型信息。
303、第一无线接入网设备向第二无线接入网设备发送第一终端设备的业务模型信息。
在本申请实施例中，第一无线接入网设备用于管理第一终端设备在切换之前所处的源小区，第二无线接入网设备用于管理第一终端设备在切换之后所处的目标小区，在第一无线接入网设备接收到第一终端设备的业务模型信息之后，为便于第二无线接入网设备为第一终端设备分配传输资源，第一无线接入网设备可以向第二无线接入网设备发送第一终端设备的业务模型信息，例如第一无线接入网设备和第二无线接入网设备之间可以通过X2接口相连接，则第一无线接入网设备通过该X2接口向第二无线接入网设备发送第一终端设备的业务模型信息。
在本申请的一些实施例中，第一终端设备向第一无线接入网设备发送测量报告，以触发切换，第一无线接入网设备根据第一终端设备上报的测量报告决定启动切换流程，第一无线接入网设备向第二无线接入网设备发送切换请求(hand over request，HO request)，该切换请求中携带有第一终端设备的业务模型信息。通过切换请求可以实现第一无线接入 网设备向第二无线接入网设备发送第一终端设备的业务模型信息，使得第二无线接入网设备可以获取到第一终端设备的业务模型信息。举例说明如下，第一无线接入网设备为源基站，第二无线接入网设备为目标基站，源基站向目标基站发送HO request中携带侧行链路的业务模型信息。
在本申请的一些实施例中，源小区与目标小区之间的X2接口不可用，或不存在X2接口，在这种实现场景下，第一无线接入网设备和核心网设备建立有通信连接，第二无线接入网设备和核心网设备建立有通信连接，第一无线接入网设备和第二无线接入网设备之间通过核心网设备进行信息转发。举例说明，第一无线接入网设备将第一终端设备的业务模型信息发送给核心网设备，由核心网设备转发业务模型信息至第二无线接入网设备。
在本申请的一些实施例中，第一无线接入网设备除了执行前述步骤303之外，本申请实施例提供的数据传输方法还包括如下任一或任几种操作：
第一无线接入网设备向第二无线接入网设备发送第一终端设备支持的频点信息；或者，
第一无线接入网设备向第二无线接入网设备发送第一终端设备生成的信道忙碌比例CBR测量结果；或者，
第一无线接入网设备向第二无线接入网设备发送第一终端设备的位置信息；或者，
第一无线接入网设备向第二无线接入网设备发送站间同步信息，站间同步信息用于指示第一无线接入网设备和第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
第一无线接入网设备向第二无线接入网设备发送网络制式请求信息，网络制式请求信息用于向第二无线接入网设备请求传输资源对应的网络制式。
其中，第一终端设备支持的频点信息也可以称为第一终端设备感兴趣的频点信息，第一终端设备支持的频点信息指的是该第一终端设备支持哪些频点，该第一终端设备支持的频点信息可以通过RRC信令上报给第一无线接入网设备，第一无线接入网设备通过该RRC信令可以获取到第一终端设备支持的频点信息。第一无线接入网设备还可以向第二无线接入网设备发送第一终端设备支持的频点信息，从而第二无线接入网设备可以获取到第一终端设备支持的频点信息。
第一终端设备还可以生成CBR测量结果，CBR测量结果是第一终端设备对时频资源忙闲监测后得到的结果，可以辅助第二无线接入网设备进行传输资源的配置。该第一CBR测量结果也可以通过RRC信令上报给第一无线接入网设备，第一无线接入网设备通过该RRC信令可以获取到CBR测量结果。第一无线接入网设备向第二无线接入网设备发送CBR测量结果，从而第二无线接入网设备可以获取到CBR测量结果。
第一终端设备的位置信息是指第一终端设备当前所处的地理位置，第一终端设备的位置信息用于第二无线接入网设备为该第一终端设备分配传输资源。该第一终端设备的位置信息也可以通过RRC信令上报给第一无线接入网设备。第一无线接入网设备通过该RRC信令可以获取到第一终端设备的位置信息。第一无线接入网设备可以向第二无线接入网设备发送第一终端设备的位置信息，从而第二无线接入网设备可以获取到第一终端设备的位置信息。
第一终端设备还可以生成站间同步信息，站间同步信息用于指示第一无线接入网设备和第二无线接入网设备之间的系统帧号偏移信息，即站间同步信息用于表示两个无线接入 网设备之间的同步时间误差偏移量，第一终端设备可以主动的向第一无线接入网设备发送站间同步信息，例如第一终端设备可以向第一无线接入网设备一次性的发送站间同步信息，也可以周期性的向第一无线接入网设备发送站间同步信息。另外，第一终端设备也可以按照第一无线接入网设备的配置来发送站间同步信息，对于第一终端设备发送站间同步信息的方式，此处不做限定。需要说明的是，周期性配置或者单次上报的情况都可以是通过第一无线接入网设备进行配置，例如周期上报的情况需要第一无线接入网设备为第一终端设备配置上报周期。第一无线接入网设备可以向第二无线接入网设备发送站间同步信息，从而第二无线接入网设备可以获取到站间同步信息。
第一终端设备还可以生成网络制式请求信息，向第一无线接入网设备发送网络制式请求信息，网络制式请求信息用于向第二无线接入网设备请求传输资源对应的网络制式。第一无线接入网设备向第二无线接入网设备发送网络制式请求信息，从而第二无线接入网设备可以获取到网络制式请求信息，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。例如，第二无线接入网设备向第一无线接入设备发送HO ACK，该HO ACK携带目标小区的资源配置信息时，需要进一步指示此传输资源为LTE制式的还是NR制式使用的，因为在现有的部署中，有可能会出现同一个第一终端设备同时具备LTE SL和NR SL的能力，因此需要第二无线接入网设备指示此传输资源对应于何种网络制式，同时第一无线接入网设备在对第一终端设备进行RRC重配时也需要进一步指示配置的传输资源是何种制式使用的，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。
进一步的，在本申请的一些实施例中，如下信息中的任一种或任几种携带在切换请求中：业务模型信息，第一终端设备支持的频点信息，CBR测量结果，第一终端设备的位置信息，站间同步信息，网络制式请求信息；
其中，切换请求由第一无线接入网设备向第二无线接入网设备发送。
在本申请的一些实施例中，第一终端设备向第一无线接入网设备发送测量报告，以触发切换，第一无线接入网设备根据第一终端设备上报的测量报告决定启动切换流程，第一无线接入网设备向第二无线接入网设备发送切换请求，该切换请求中携带有如下信息中的任一种或任几种携带在切换请求中：业务模型信息，第一终端设备支持的频点信息，CBR测量结果，第一终端设备的位置信息，站间同步信息，网络制式请求信息。通过切换请求可以实现第一无线接入网设备向第二无线接入网设备发送如下信息中的任一种或任几种携带在切换请求中：第一终端设备的业务模型信息，第一终端设备支持的频点信息，CBR测量结果，第一终端设备的位置信息，站间同步信息，网络制式请求信息。
304、第二无线接入网设备接收第一无线接入网设备发送的第一终端设备的业务模型信息。
在本申请实施例中，为便于第二无线接入网设备为第一终端设备分配传输资源，第二无线接入网设备可以接收第一无线接入网设备发送的第一终端设备的业务模型信息，例如第一无线接入网设备和第二无线接入网设备之间可以通过X2接口相连接，则第二无线接入网设备通过该X2接口接收第一无线接入网设备发送的第一终端设备的业务模型信息。
在本申请的一些实施例中，第一终端设备向第一无线接入网设备发送测量报告，以触 发切换，第一无线接入网设备根据第一终端设备上报的测量报告决定启动切换流程，第一无线接入网设备向第二无线接入网设备发送切换请求，该切换请求中携带有第一终端设备的业务模型信息。通过切换请求可以实现第二无线接入网设备获取到第一终端设备的业务模型信息。举例说明如下，第一无线接入网设备为源基站，第二无线接入网设备为目标基站，源基站向目标基站发送HO request中携带用于为侧行链路配置资源的业务模型信息，目标基站通过HO request获取到用于为侧行链路配置资源的业务模型信息。
在本申请的一些实施例中，源小区与目标小区之间的X2接口不可用，或不存在X2接口，在这种实现场景下，第一无线接入网设备和核心网设备建立有通信连接，第二无线接入网设备和核心网设备建立有通信连接，第一无线接入网设备和第二无线接入网设备之间通过核心网设备进行信息转发。举例说明，第二无线接入网设备接收核心网设备转发的第一终端设备的业务模型信息，业务模型信息由第一无线接入网设备发送给核心网设备。
305、第二无线接入网设备根据第一终端设备的业务模型信息确定第一终端设备在切换过程中在侧行链路上传输数据所需的传输资源。
其中，切换过程指的是第一终端设备从第一无线接入网设备向第二无线接入网设备进行切换，侧行链路为第一终端设备和第二终端设备之间的通信链路。
在本申请实施例中，第二无线接入网设备获取到第一终端设备的业务模型信息之后，第二无线接入网设备解析第一终端设备的业务模型信息，确定出第一终端设备传输的业务所需要的传输资源，第一终端设备的业务模型信息是指第二无线接入网设备为第一终端设备分配传输资源时所需要的信息。在实际的业务传输场景中，业务模型信息可以根据第一终端设备传输的业务确定业务模型信息所包括的内容。第二无线接入网设备可以根据第一终端设备的业务模型信息为第一终端设备传输的业务分配传输资源，该传输资源可以用于第一终端设备在切换过程中在侧行链路上传输数据。
在本申请的一些实施例中，第二无线接入网设备为第一无线接入网设备确定的传输资源为周期性配置的资源。第二无线接入网设备确定的传输资源为周期性配置的资源时，第一终端设备可以使用该周期性配置的传输资源进行数据传输。
进一步的，在本申请的一些实施例中，传输资源按照半持续调度(semi-persistent scheduling，SPS)方式配置；和/或按照免授权调度(grant-free，GF)方式配置。其中，SPS和GF都是预配置资源的方法，是两种不同的资源配置方式，SPS是通过RRC对资源进行预配置，并通过下行控制信令(downlink control information，DCI)信令进行激活，GF则是通过RRC对资源配置，激活也由RRC进行，即RRC指示按照GF方式配置的传输资源的生效时刻。在实际应用中，第二无线接入网设备可以根据场景灵活配置所采用的资源预配置方式。
在本申请的一些实施例中，业务模型信息，还包括如下信息中的任一种或任几种信息：业务周期信息，业务相对于SFN的时间偏移信息，PPPP信息，PPPR信息，或者业务的包大小信息。
其中，业务周期信息是指第一终端设备所传输的业务的传输周期，业务相对于SFN的时间偏移信息是指第一终端设备所传输的业务相对于固定的SFN(例如SFN＝0)的时间偏移量，即业务相对于SFN的时间偏移信息指示了第一终端设备所传输的业务的到达时刻，PPPP 和PPPR分别代表了第一终端设备传输的业务在时间上的优先级需求和可靠性的相对需求，业务的包大小指的是第一终端设备所传输的业务的数据量大小。
进一步的，在本申请的一些实施例中，步骤305第二无线接入网设备根据第一终端设备的业务模型信息确定第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，包括：
第二无线接入网设备根据业务周期信息确定传输资源的资源周期；或者，
第二无线接入网设备根据业务相对于系统帧号的时间偏移信息确定传输资源相对于起始系统帧号的时域位置；或者，
第二无线接入网设备根据PPPP信息确定传输资源上承载的数据优先级；或者，
第二无线接入网设备根据PPPR信息确定传输资源对应的可靠性需求、传输资源对应的信道质量；或者，
第二无线接入网设备根据业务的包大小信息确定传输资源上承载的业务数据量。
其中，业务周期信息是指第一终端设备所传输的业务的传输周期，第二无线接入网设备可以根据业务周期信息确定传输资源的资源周期，周期性配置的传输资源可以用于周期性传输的业务。业务相对于SFN的时间偏移信息是指第一终端设备所传输的业务相对于固定的SFN(例如SFN＝0)的时间偏移量，即业务相对于SFN的时间偏移信息指示了第一终端设备所传输的业务的到达时刻，第二无线接入网设备可以根据业务相对于系统帧号的时间偏移信息确定传输资源相对于起始系统帧号的时域位置，使得第二无线接入网设备确定的传输资源能够被第一终端设备正确的解析得到。PPPP和PPPR分别代表了第一终端设备传输的业务在时间上的优先级需求和可靠性的相对需求，第二无线接入网设备可以根据PPPP信息确定传输资源上承载的数据优先级，从而实现不同优先级的数据使用不同的传输资源进行传输，还可以用于处理不同终端设备之间的调度优先级，第二无线接入网设备还可以根据PPPR信息确定传输资源对应的可靠性需求、传输资源对应的信道质量，从而保证第二无线接入网设备为第一终端设备不同PPPR需求的数据选择合适信道质量的传输资源。业务的包大小指的是第一终端设备所传输的业务的数据量大小，第二无线接入网设备可以根据业务的包大小信息确定传输资源上承载的业务数据量，从而为终端设备配置适量的资源，避免因业务的包过大导致无法传输的情况。
在本申请的一些实施例中，第二无线接入网设备除了执行前述步骤305之外，本申请实施例提供的数据传输方法还包括如下任一或任几种操作：
第二无线接入网设备向第一无线接入网设备发送网络制式指示信息，网络制式指示信息用于指示传输资源对应的网络制式；或者，
第二无线接入网设备向第一无线接入网设备发送第三资源配置信息，第三资源配置信息包括如下信息中的至少一种：载波聚合(carrier aggregation，CA)配置信息、多路复用配置信息。
其中，第一无线接入网设备向第二无线接入网设备发送网络制式请求信息，从而第二无线接入网设备可以获取到网络制式请求信息，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。例如，第二无线接入网设备向第一无线接入设备发送HO ACK，该HO ACK携带目标小区的资源配置信息时，需要进一步指示此传输资源 为LTE制式的还是NR制式使用的，因为在现有的部署中，有可能会出现同一个第一终端设备同时具备LTE SL和NR SL的能力，因此需要第二无线接入网设备指示此传输资源对应于何种网络制式，同时第一无线接入网设备在对第一终端设备进行RRC重配时也需要进一步指示配置的传输资源是何种制式使用的，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。
第二无线接入网设备还可以为第一终端设备生成CA配置信息、多路复用(duplication)配置信息。举例说明如下，第二无线接入网设备可以获取到第一终端设备支持的频点信息，从而根据该第一终端设备支持的频点信息配置CA时所使用的载波，生成上述CA配置信息。又如，第二无线接入网设备可以根据第一终端设备的业务可靠性需求，生成上述多路复用配置信息，例如，第二无线接入网设备可以获取到第一终端设备生成的PPPR信息，PPPR信息可以辅助第二无线接入网设备确定是否使用多路复用，例如PPPR低于某个值时使用多路复用。第二无线接入网设备向第一无线接入网设备发送第三资源配置信息，该第三资源配置信息包括CA配置信息、多路复用配置信息。
306、第二无线接入网设备向第一无线接入网设备发送第一资源配置信息，第一资源配置信息包括传输资源。
在本申请实施例中，第二无线接入网设备确定出第一终端设备在切换过程中在侧行链路上传输数据所需的传输资源之后，第二无线接入网设备生成第一资源配置信息，该第一资源配置信息包括为第二无线接入网设备为第一终端设备确定出的传输资源。然后第二无线接入网设备向第一无线接入网设备发送第一资源配置信息，例如第一无线接入网设备和第二无线接入网设备之间可以通过X2接口相连接，则第二无线接入网设备通过该X2接口向第一无线接入网设备发送第一资源配置信息。
在本申请的一些实施例中，第二无线接入网设备除了执行前述步骤305和步骤306之外，本申请实施例提供的数据传输方法还包括如下任一或任几种操作：
第二无线接入网设备接收第一无线接入网设备发送的第一终端设备支持的频点信息；或者，
第二无线接入网设备接收第一无线接入网设备发送的第一终端设备生成的信道忙碌比例CBR测量结果；或者，
第二无线接入网设备接收第一无线接入网设备发送的第一终端设备的位置信息；或者，
第二无线接入网设备接收第一无线接入网设备发送的站间同步信息，站间同步信息用于指示第一无线接入网设备和第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
第二无线接入网设备接收第一无线接入网设备发送的网络制式请求信息，网络制式请求信息用于向第二无线接入网设备请求传输资源对应的网络制式。
进一步的，第二无线接入网设备还执行如下任一或任几种操作：
第二无线接入网设备根据第一终端设备支持的频点信息为第一终端设备配置载波；或者，
第二无线接入网设备根据CBR测量结果为第一终端设备确定传输资源的位置；或者，
第二无线接入网设备根据第一终端设备的位置信息为第一终端设备确定第一终端设备所在区域对应的资源位置；或者，
第二无线接入网设备根据站间同步信息校正传输资源的时域位置。
其中，第一终端设备支持的频点信息也可以称为第一终端设备感兴趣的频点信息，第一终端设备支持的频点信息指的是该第一终端设备支持哪些频点，第二无线接入网设备可以获取到第一终端设备支持的频点信息，第二无线接入网设备解析该第一终端设备支持的频点信息，然后确定终端设备数据传输对应载波信息。
第一终端设备还可以生成CBR测量结果，CBR测量结果是第一终端设备对时频资源忙闲监测后得到的结果，可以辅助第二无线接入网设备进行传输资源的配置。第二无线接入网设备可以获取到CBR测量结果，第二无线接入网设备通过解析该CBR测量结果确定出时频资源的闲忙状态，从而可以根据CBR测量结果为第一终端设备确定数据传输对应的时频资源。
第一终端设备的位置信息是指第一终端设备当前所处的地理位置，第二无线接入网设备可以获取到第一终端设备的位置信息，然后确定出与第一终端设备所在地理区域对应的时频资源。
第二无线接入网设备可以获取到站间同步信息，然后根据该站间同步信息对传输资源的时域位置进行校正。不限定的是，本申请的另一些实施例中，第二无线接入网设备还可以不对传输资源的时域位置进行校正，而是由第一无线接入网设备根据站间同步信息对传输资源的时域位置进行校正。
第一终端设备还可以生成网络制式请求信息，第二无线接入网设备可以通过第一无线接入网设备获取到网络制式请求信息，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。
307、第一无线接入网设备接收第二无线接入网设备发送的第一资源配置信息。
其中，第一资源配置信息包括：第一终端设备在切换过程中在侧行链路上传输数据所需的传输资源，切换过程指的是第一终端设备从第一无线接入网设备向第二无线接入网设备进行切换，侧行链路为第一终端设备和第二终端设备之间的通信链路。
在本申请实施例中，第二无线接入网设备可以向第一无线接入网设备发送第一资源配置信息，从而第一无线接入网设备可以从第二无线接入网设备接收到第一资源配置信息。例如第一无线接入网设备和第二无线接入网设备之间可以通过X2接口相连接，则第一无线接入网设备通过该X2接口接收第二无线接入网设备发送的第一资源配置信息。
在本申请的一些实施例中，第一无线接入网设备除了执行前述步骤307之外，本申请实施例提供的数据传输方法还包括如下任一或任几种操作：
第一无线接入网设备接收第二无线接入网设备发送的网络制式指示信息，网络制式指示信息用于指示传输资源对应的网络制式；或者，
第一无线接入网设备接收第二无线接入网设备发送的第三资源配置信息，第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
其中，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。例如，第二无线接入网设备向第一无线接入设备发送HO ACK，该HO ACK携带目标小区的资源配置信息时，需要进一步指示此传输资源为LTE制式的还是NR制式使用的。第二无线接入网设备可以向第一无线接入网设备发送网络制式指示信息，因此第一无线接入 网设备可以从第二无线接入网设备获取到该网络制式指示信息。
第二无线接入网设备向第一无线接入网设备发送第三资源配置信息，该第三资源配置信息包括CA配置信息、多路复用配置信息，从而第一无线接入网络设备可以从第二无线接入网设备获取到第三资源配置信息，第一无线接入网设备可以获取到第二无线网设备生成的CA配置信息、多路复用配置信息。
在本申请的一些实施例中，第一无线接入网设备接收第二无线接入网设备发送的第一资源配置信息，包括：
第一无线接入网设备接收第二无线接入网设备发送的切换确认，该切换确认携带第一资源配置信息。
其中，在前述实施例中第一无线接入网设备向第二无线接入网设备发送切换请求，第二无线接入网设备可以发送切换确认，在切换确认携带第二无线接入网设备确定出的第一资源配置信息，从而第一无线接入网设备通过解析该切换确认可以得到第一资源配置信息。
308、第一无线接入网设备向第一终端设备发送配置消息。
其中，配置消息包括：第一资源配置信息；或者，
配置消息包括：第一无线接入网设备基于第一资源配置信息产生的第二资源配置信息，第二资源配置信息包括：第一终端设备在切换过程中在侧行链路上传输数据所需的传输资源。
在本申请的一些实施例中，第一无线接入网设备可以通过RRC重配置信息发送上述配置消息。另外，该配置消息可以通过RRC重配置信息中的移动控制信息(mobility control info)信元携带。
在本申请的一些实施例中，第一无线接入网设备在接收到第一资源配置信息，第一无线接入网设备可以向第一终端设备发送配置消息，该配置消息可以通过RRC信令来发送。例如配置消息包括第一资源配置信息，即第一无线接入网设备将从第二无线接入网设备接收到的第一资源配置信息携带在配置消息中发送给第一终端设备。另外，第一无线接入网设备还可以基于第一资源配置信息产生第二资源配置信息，第二资源配置信息包括：第一终端设备在切换过程中在侧行链路上传输数据所需的传输资源，第一无线接入网设备将生成的第二资源配置信息携带在配置消息中发送给第一终端设备。
在本申请的一些实施例中，第一无线接入网设备还可以向第一终端设备发送网络制式指示信息，或者第三资源配置信息。其中，该第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。第一终端设备可以接收到网络制式指示信息，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。第一终端设备通过解析CA配置信息确定出第二无线接入网设备确定的CA，通过解析多路复用配置信息确定出是否启用多路复用。
309、第一终端设备接收第一无线接入网设备发送的配置消息。
其中，配置消息包括：第一资源配置信息；或者，配置消息包括：第一无线接入网设备基于第一资源配置信息产生的第二资源配置信息，第一资源配置信息包括：第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，切换过程指的是第一终端设备从第一无线接入网设备向第二无线接入网设备进行切换，侧行链路为第一终端设备和第二 终端设备之间的通信链路，第二资源配置信息包括：第一终端设备在切换过程中在侧行链路上传输数据所需的传输资源。
在本申请的一些实施例中，第一终端设备除了执行前述步骤309之外，本申请实施例提供的数据传输方法还包括如下任一或任几种操作：
第一终端设备接收第一无线接入网设备发送的网络制式指示信息，网络制式指示信息用于指示传输资源对应的网络制式；或者，
第一终端设备接收第一无线接入网设备发送的第三资源配置信息，第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
其中，第一终端设备发送网络制式请求信息，经过第一无线接入网设备的转发，第二无线接入网设备接收到该网络制式请求信息，第二无线接入网设备还可以为第一终端设备确定的传输资源指示所对应的网络制式。同时第一无线接入网设备在对第一终端设备进行RRC重配时也需要进一步指示配置的传输资源是何种制式使用的，经过第一无线接入网设备的转发，第一终端设备可以接收到网络制式指示信息，以便第一终端设备在接收到此传输资源时使用相应的发送参数进行适配。
第二无线接入网设备向第一无线接入网设备发送第三资源配置信息，经过第一无线接入网设备的转发，第一终端设备获取到第三资源配置信息，第三资源配置信息包括CA配置信息、多路复用配置信息，从而第一终端设备通过解析CA配置信息确定出第二无线接入网设备确定的CA，通过解析多路复用配置信息确定出是否启用多路复用。
310、第一终端设备使用传输资源向第二终端设备传输数据。
在本申请实施例中，第一终端设备接收第一无线接入网设备发送的配置消息，该配置消息包括有第一资源配置信息或者第二资源配置信息，第一终端设备通过解析该第一资源配置信息或者第二资源配置信息确定出传输资源，然后第一终端设备可以使用该传输资源向第二终端设备传输数据。例如第一终端设备可以使用该传输资源向第二终端设备发送数据。
进一步的，在本申请的一些实施例中，第一终端设备使用传输资源向第二终端设备传输数据，包括：
当第一终端设备采用模式(mode)3传输时，从第一终端设备接收到步骤309中的配置消息开始，直至第一终端设备切换到的小区进行重配置，第一终端设备使用传输资源向第二终端设备传输数据；或者，
当第一终端设备采用模式4传输时，从第一终端设备接收到配置消息开始，直至第一终端设备获取到监测后的资源，第一终端设备使用传输资源向第二终端设备传输数据。
其中，在实现车与车之间进行相互通信过程中，V2V场景下定义了两种通信模式，分别是mode3和mode4，其中mode3可以理解为车与车之间的通信过程受基站控制，发送端车辆在基站调度的资源上发送控制信号和数据信号。在mode4中，发送端车辆的发送资源并不受基站控制，而是通过本身监测(sensing)信道的忙闲状态寻找合适的资源进行发送数据。若第一终端设备在目标小区配置为mode3传输。从第一终端设备接收配置信息开始，直至目标小区的RRC重配置，使用源小区的传输资源进行数据发送。若第一终端设备在目标小区配置为mode4传输，从第一终端设备接收配置信息开始，直至第一终端设备获取监 测后的资源，使用源小区的传输资源进行数据发送。
通过前述实施例对本申请的举例说明可知，第一无线接入网设备可以将第一终端设备的业务模型信息发送给第二无线接入网设备，从而第二无线接入网设备可以根据第一终端设备的业务模型信息确定第一终端设备在切换过程中在SL上传输数据所需的传输资源，第二无线接入网设备发送携带有该传输资源的第一资源配置信息给第一无线接入网设备，第一无线接入网设备可以向第一终端设备发送配置消息，从而第一终端设备可以通过该配置消息获取到第二无线接入网设备所确定的传输资源，第一终端设备使用该传输资源向第二终端设备传输数据。本申请实施例中通过第二无线接入网设备根据第一终端设备的业务模型信息为第一终端设备确定在切换过程中在SL上传输数据所需的传输资源，使得第一终端设备可以使用该传输资源与第二终端设备进行数据传输，因此减小了终端设备切换后的传输时延，提高终端设备在切换过程中的数据传输可靠性,提高通信效率。
为便于更好的理解和实施本申请实施例的上述方案，下面举例相应的应用场景来进行具体说明。
本申请实施例主要涉及终端设备、无线接入网设备，接下来以终端设备具体为UE、无线接入网设备具体为eNodeB为例，例如该UE可以是前述的V-UE。UE从源小区切换到目标小区的过程中，源小区通过HO请求(request)中携带SL的业务模型(traffic model)等相关信息通知目标小区，目标小区通过在HO确认(ACK)直接为UE配置SL的SPS/GF资源，该SPS/GF资源用于切换过程中的数据发送，通过直接为切换过程配置SL的SPS/GF资源，减少接入新小区后的测量重配时延，同时提高切换过程中数据传输的可靠性。需要说明的是，上述的SPS/GF资源指的是按照SPS或者GF方式配置的传输资源，在实际应用中，需要根据实际要发送的业务情况分配合适的资源及生效时刻。
首先请参阅图4所示，为本申请实施例提供的UE、源基站、目标基站之间的一种交互流程示意图。本实施例中，源小区通过HO request中携带SL traffic model等相关信息通知目标小区，当V-UE切换到目标小区后，目标小区根据SL traffic model为UE直接配置SL SPS/GF配置信息。其中，traffic model为两基站间的交互信息，例如可以通过X2口或Xn口或基站间的站间(inter-node)RRC信令进行传输。
图4所示的切换流程，可以包括如下过程：
S01、V-UE向源基站发送测量报告，以触发切换。
S02、源基站根据UE上报的测量结果决定启动切换流程，并向目标基站发送HO请求，该测量结果包括：上述测量报告，该HO请求至少携带以下信息之一，并且以下信息同时还要与相应的UE ID绑定。HO请求携带的信息如下：Traffic model，包括：业务周期，offset，PPPP，PPPR，message size等；感兴趣频点；CBR测量结果；GPS等信息。
S03、目标基站向源基站发送切换请求反馈。
例如，通过X2口的HO ACK消息携带目标小区的例外资源池(exceptional pool)资源配置信息。
S04、源基站向V-UE发送RRC重配置信息，执行RRC重配置，要求V-UE执行切换，并配置exceptionalpool资源信息。
S05、UE发起目标基站接入，执行切换。
从UE接收HO的配置信息开始，在定时器T304超时之前，UE随机选择exceptionalpool中的资源进行发送。T304是UE在收到带有移动控制信息(mobility Control Info)的RRC连接重配置消息时启动的定时器，在完成新小区的随机接入后停止定时器。
S06、目标基站向UE发送资源配置信息。
当V-UE成功接入目标小区后，目标小区根据源小区获取的SL traffic model直接为UE配置SPS/GF资源，以及SL CA配置和SL多路复用配置。
此外，可选的，在源基站向目标基站发送的traffic model中，包含了以下至少消息之一或其组合：业务周期，offset，PPPP，PPPR，message size等。其中业务周期代表着UE在源基站时的半静态业务的周期，Traffic model中的业务周期可以对应SPS/GF资源中的资源周期，offset为此业务相对SFN＝0时的时间偏移量，Offset可以对应SPS/GF资源的生效时刻，PPPP和PPPR分别代表了此业务在时间上的优先级需求和可靠性的相对需求，感兴趣频点可以辅助基站配置CA时所使用的载波，PPPR参数可以辅助基站是否使用多路复用，例如PPPR低于某个值时使用。message size则是此业务的包大小。
同时，源基站还可以通过在HO请求消息中携带UE的感兴趣频点信息，便于目标基站为UE配置SL CA。源基站还可以通过在HO请求消息中携带PPPR信息，以便目标基站为UE配置SL duplication。
同时，通过HO请求消息中携带CBR测量结果和UE的GPS信息，可以辅助目标基站调度，其中CBR测量结果可以包括mode3使用的资源池的测量结果和mode4使用的资源池的测量结果。
可选的，通过X2口的HO ACK携带目标小区的exceptional pool资源配置信息时，需要进一步指示此exceptional pool为LTE制式的还是NR制式使用的，因为在现有的部署中，有可能会出现同一UE同时具备LTE SL和NR SL的能力，因此需要目标基站指示此exceptional pool的资源池是何种制式的，同时源基站在对UE进行RRC重配时也需要进一步指示配置的exceptional pool是何种制式使用的，以便UE在接收到此资源时使用相应的发送参数进行适配。
通过上述实施例的举例说明可知，当V-UE切换到目标小区后，目标小区根据SL traffic model为UE直接配置SL SPS/GF配置信息，减少了V-UE切到目标小区后的重新测量SL和重配置资源过程，有效的降低了时延。此方案可以保证在接入目标基站的时可以使用接收到的SL SPS/GF资源，当UE成功接入到目标基站后，UE后期还会继续上报业务模型等参数辅助基站更新配置。
请参阅图5所示，为本申请实施例提供的UE、源基站、目标基站之间的另一种交互流程示意图。本实施例中，源小区通过HO request中携带SL traffic model等相关信息通知目标小区，目标小区通过在HO command直接为UE配置SL SPS/GF配置信息，用于切换过程中的数据发送。通过在切换过程中使用基站调度的资源发送，而非在exceptional资源上随机发送，提高传输的可靠性。SPS/GF资源是通过基站对业务模型参数得到的调度资源，exceptional pool中的资源是固定的，与业务等解耦。
图5所示的切换流程，可以包括如下过程：
S11、V-UE向源基站发送测量报告，以触发切换。
S12、源基站根据UE上报的测量结果决定启动切换流程，并向目标基站发送HO请求。该测量结果包括：上述测量报告，其中，HO请求至少携带以下信息之一：Traffic model：业务周期，offset，PPPP，PPPR，message size等；基站间同步信息：站间SFN offset，用于辅助配置SPS offset；感兴趣频点；CBR测量结果；GPS等信息。
其中，traffic model中的offset为此业务相对SFN＝0时的时间偏移量，相当于一个业务的到达时刻，站间SFN offset表示两基站之间的同步时间误差偏移量。基站间同步信息可以周期性配置UE上报，或者可以由UE单次上报。对于采用周期性配置或者单次上报的情况都可以是通过基站配置的，例如周期上报的情况需要基站去配置上报周期。举例说明，基站可以配置UE上报，例如源基站通过配置UE测量SFN offset，并配置上报此offset的资源，UE通过RRC重配置信息等信令向源基站上报此站间SFN offset。
S13、目标基站向源基站发送切换请求反馈。
其中，通过X2口的HO ACK携带目标小区的SL SPS/GF资源配置信息，该SPS/GF资源配置信息包括：时频资源，周期，offset，MCS，发射功率等。还可同时通过X2口携带目标小区的SL CA配置和SL duplication配置。还可以携带候选exceptional资源。
S14、源基站向V-UE发送RRC重配置信息，执行RRC重配置，要求V-UE执行切换，并配置SPS/GF信息。
S15、UE发起目标基站接入，执行切换。
因为SPS/GF资源是根据UE上报的业务模型确定的，也就是说当UE在某个时刻来一份周期性业务时，可以使用所配置的SPS/GF资源进行发送，以及使用其中所指示的发送参数进行数据发送，例如该发送参数可以包括：调制编码方案(Modulation and Coding Schemes，MCS)，发送功率。
若UE在目标小区配置为mode3传输，从UE接收HO的配置信息开始，直至目标小区的RRC重配置，使用源小区的SPS/GF配置进行发送。
当HO失败时，使用候选exceptional资源进行发送，或继续使用SPS进行发送。本申请实施例提到的SPS/GF配置指的都是目标小区根据业务模型确定的SPS/GF配置，此配置传给源基站并通过RRC重配置信息中的mobilitycontrolinfo信元进行配置。
若UE在目标小区配置为mode4传输，从UE接收HO的配置信息开始，直至UE获取监测后的资源，使用源小区的SPS/GF配置进行发送。
当HO失败时，使用候选exceptional资源进行发送，或继续使用SPS/GF资源进行发送。
在本申请的一些实施例中，UE还可以在多个模式之间进行模式切换。例如，当UE从mode 3切到mode 4，在mode切换过程中UE可以使用上述的SPS/GF资源进行资源传输，直至UE在mode 4所在的资源池中监测到可用的传输资源。
此外，可选的，在源基站向目标基站发送的traffic model中，包含了以下至少消息之一或其组合：业务周期，offset，PPPP，PPPR，message size等。其中业务周期代表着UE在源基站时的半静态业务的周期，offset为此业务相对SFN＝0时的时间偏移量，PPPP和PPPR分别代表了此业务在时间上的优先级需求和可靠性的相对需求，message size则是此业务的包大小。
由于UE需要在切换过程中使用目标基站配置的SPS/GF信息，且源基站和目标基站之间会存在一定的同步误差，因此需要对齐两基站间的同步误差以便能配置适配的offset信息以匹配业务。因此UE需要通过测量两基站之间的SFN offset并上报源基站，可选的，可以通过基站配置上报或UE自主上报方式完成上报，且上报可以是一次性的或者周期性上报的，且可以承载在RRC信令或MAC CE等信令上；同时源基站需要在HO request中向目标基站发送基站间的同步误差(SFN offset)。
同时，源基站还可以通过在HO请求消息中携带UE的感兴趣频点信息，便于目标基站为UE配置SL CA。源基站还可以通过在HO请求消息中携带PPPR信息，以便目标基站为UE配置SL duplication。
同时，通过HO请求消息中携带CBR测量结果和UE的GPS信息，可以辅助目标基站调度，其中CBR测量结果可以包括mode3使用的资源池的测量结果和mode4使用的资源池的测量结果。
可选的，目标基站通过X2口的HO ACK携带目标小区的SL SPS/GF资源配置信息时，目标基站需要发送一份或多份SPS/GF配置信息给目标基站，其中每份GF配置信息至少包括以下信息之一：时频资源，周期，offset，MCS，发射功率等。每份SPS信息包括：周期，offset，时域资源位置，频域资源位置，MCS等级等。如果UE支持多份配置，则是每份的参数相同，参数取值不同，多份的话需要对每份条件ID进行标识。如果UE有多份不同类型的业务需要进行发送，那么UE可以请求多份资源，目标基站在配置资源时可以相应的配置多份资源。
可选的，通过X2口的HO ACK携带目标小区的exceptional pool资源配置信息时，需要进一步指示此exceptional pool为LTE制式的还是NR制式使用的，因为在现有的部署中，有可能会出现同一UE同时具备LTE SL和NR SL的能力，因此需要目标基站指示此exceptional pool的资源池是何种制式的，同时源基站在对UE进行RRC重配时也需要进一步指示配置的exceptional pool是何种制式使用的，以便UE在接收到此资源时使用相应的发送参数进行适配。
SPS/GF配置生效时刻：可选的，当UE接收到源基站的RRC重配置信息时，从UE接收HO的配置信息开始使用源小区的SPS/GF配置进行发送，或是UE向目标基站反馈配置完成时开始生效，或从UE接收到目标小区的RAR消息，或接收到目标小区的MSG4时开始使用源小区的SPS/GF配置进行发送。或当UE执行conditional HO时(也即UE在达到某种特殊的条件时发起向目标小区的切换)，则SPS/GF配置生效时刻为UE达到基站配置的或预定义的某种条件/门限时。
SPS/GF配置失效时刻：此时可以分为两种情况考虑，当UE在目标基站中被配置为mode3时，则SPS/GF配置的失效时刻为目标小区的RRC SPS/GF重配置；当UE在目标基站中被配置为mode4时，则SPS/GF配置的失效时刻为UE在目标小区的mode4资源上sensing后获得可用的资源。
另外，可选的，当UE在HO过程中发生失败时，若UE存在配置的exceptional资源时，可以回退至exceptional资源进行发送，切换过程中使用SPS/GF资源，如果切换失败了且存在分配的exceptional pool资源时，可以使用exceptional pool资源。若UE不存在 exceptional资源时，也可以继续使用源小区配置的，但实际上是目标小区的SPS/GF资源进行发送。或UE还可以通过向源基站发送HO failure消息指示基站重新配置发送资源，此时是HO失败的场景，此时是何资源取决于源基站的实现行为，有可能是动态调度的资源，也有可能是半静态的SPS/GF资源。
通过前述的举例说明可知，切换过程中使用目标基站配置的SPS/GF资源，降低冲突概率，提高传输可靠性。
图6为本申请实施例提供的一种UE、源基站、目标基站、MME之间的交互流程示意图。
S21、V-UE向源基站发送测量报告，以触发切换。
S22、源基站根据UE上报的测量结果决定启动切换流程，并向MME发送HO请求。
S23、MME向目标基站发送HO请求。
S24、目标基站向MME发送HO确认。
S25、MME向源基站发送HO确认。
S26、源基站向V-UE发送RRC重配置信息，执行RRC重配置，要求V-UE执行切换，并配置exceptionalpool资源信息。
S27、UE发起目标基站发送随机接入，执行切换。
从UE接收HO的配置信息开始，在定时器T304超时之前，UE随机选择exceptionalpool中的资源进行发送。T304是UE在收到带有移动控制信息(mobilityControlInfo)的RRC重配置信息时启动的定时器，在完成新小区的随机接入后停止定时器的计时。
若源小区与目标小区之间X2口不可用，或无X2口时，通过在S1口传输HO request和HO ACK，并通过MME进行转发，S1接口是基站和MME之间的接口。
且为了适配不同制式的基站，前述实施例中SL traffic model信息与SPS/GF配置信息的相应载体改为S1口。即前述的SL traffic model信息与SPS/GF配置信息通过S1口进行传输。
上述实施例中的基站也不限定是LTE eNB还是NR中的gNB，且基站所连接的核心网类型也不限定，可以是4G系统中的演进分组核心网(Evolved Packet Core，EPC)或是5G系统中的5G核心网(5G Core，5GC)。
同时为了适配不同的切换场景，上述实施例中的HO request和HO ACK消息可以进一步上位成基站间的普通传输消息，其一种具体的表现形式可以为HO request和HO ACK。
若为5G空口，则上述X2、S1、MME需要替换成Xn、NG、AMF。
在本申请实施例中，HO request是源基站在X2/Xn(X2口可用)或S1/NG(X2不可用)向目标基站发送至少以下信息之一：
Traffic model：业务周期，offset，PPPP，PPPR等。
基站间同步信息：站间SFN offset，用于辅助配置SPS offset。由于UE需要在切换过程中使用目标基站配置的SPS/GF信息，且源基站和目标基站之间会存在一定的同步误差，因此需要对齐两基站间的同步误差，以便能配置适配的offset信息以匹配业务。
UE感兴趣的频点信息。
CBR测量结果。
GPS信息。
其中，HO ACK是目标基站在X2/Xn(X2口可用)或S1/NG(X2不可用)向源基站发送至少以下信息之一：通过X2口的HO ACK携带目标小区的SL SPS/GF资源配置信息，同时通过X2口携带目标小区的SL CA配置和SL duplication配置。
通过前述的举例说明可知，切换过程中使用目标基站配置的SPS/GF资源，降低冲突概率，提高可靠性。减少了切换到新小区后需要重新测量SL情况并配置SPS/GF的时延。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请并不受所描述的动作顺序的限制，因为依据本申请，某些步骤可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本申请所必须的。
为便于更好的实施本申请实施例的上述方案，下面还提供用于实施上述方案的相关装置。
请参阅图7所示，本申请实施例提供的一种无线接入网设备，所述无线接入网设备具体为第一无线接入网设备700，所述第一无线接入网设备700，包括：
接收模块701，用于接收第一终端设备发送的所述第一终端设备的业务模型信息；
发送模块702，用于向第二无线接入网设备发送所述第一终端设备的业务模型信息；
所述接收模块701，用于接收所述第二无线接入网设备发送的第一资源配置信息；
处理模块703，用于根据所述第一资源配置信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；
所述发送模块702，用于向所述第一终端设备发送配置消息；
其中，所述配置消息包括：所述第一资源配置信息；或者，
所述配置消息包括：所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源。
在本申请的一些实施例中，所述发送模块702，还用于执行如下任一或任几种操作：
向所述第二无线接入网设备发送所述第一终端设备支持的频点信息；或者，
向所述第二无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
向所述第二无线接入网设备发送所述第一终端设备的位置信息；或者，
向所述第二无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
向所述第二无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在本申请的一些实施例中，如下信息中的任一种或任几种携带在切换请求中：所述业务模型信息，所述第一终端设备支持的频点信息，CBR测量结果，所述第一终端设备的位置信息，所述站间同步信息，所述网络制式请求信息；
其中，所述切换请求由所述第一无线接入网设备向所述第二无线接入网设备发送。
在本申请的一些实施例中，所述接收模块701，还用于执行如下操作：
接收所述第二无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
接收所述第二无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
请参阅图8所示，本申请实施例提供的一种无线接入网设备，所述无线接入网设备具体为第二无线接入网设备800，所述第二无线接入网设备800，包括：
接收模块801，用于接收第一无线接入网设备发送的第一终端设备的业务模型信息；
处理模块802，用于根据所述第一终端设备的业务模型信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；
发送模块803，用于向所述第一无线接入网设备发送第一资源配置信息，所述第一资源配置信息包括所述传输资源。
在本申请的一些实施例中，所述接收模块801，还用于执行如下任一或任几种操作：
接收所述第一无线接入网设备发送的所述第一终端设备支持的频点信息；或者，
接收所述第一无线接入网设备发送的所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
接收所述第一无线接入网设备发送的所述第一终端设备的位置信息；或者，
接收所述第一无线接入网设备发送的站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
接收所述第一无线接入网设备发送的网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在本申请的一些实施例中，所述处理模块802，还用于执行如下任一或任几种操作：
根据所述第一终端设备支持的频点信息为所述第一终端设备配置载波；或者，
根据所述CBR测量结果为所述第一终端设备确定所述传输资源的位置；或者，
根据所述第一终端设备的位置信息为所述第一终端设备确定所述第一终端设备所在区域对应的资源位置；或者，
根据所述站间同步信息校正所述传输资源的时域位置。
在本申请的一些实施例中，所述发送模块803，还用于执行如下操作：
向所述第一无线接入网设备发送网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
向所述第一无线接入网设备发送第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
请参阅图9所示，本申请实施例提供的一种终端设备，所述终端设备具体为第一终端设备900，所述第一终端设备900，包括：
发送模块901，用于向第一无线接入网设备发送所述第一终端设备的业务模型信息；
接收模块902，用于接收所述第一无线接入网设备发送的配置消息；
处理模块903，用于根据所述配置消息确定第一资源配置信息，或者所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第一资源配置信息包括：所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源；
所述发送模块901，用于使用所述传输资源向所述第二终端设备传输数据。
在本申请的一些实施例中，所述发送模块901，还用于执行如下任一或任几种操作：
向所述第一无线接入网设备发送所述第一终端设备支持的频点信息；或者，
向所述第一无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
向所述第一无线接入网设备发送所述第一终端设备的位置信息；或者，
向所述第一无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
向所述第一无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
在本申请的一些实施例中，所述接收模块902，还用于执行如下操作：
接收所述第一无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
接收所述第一无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
在本申请的一些实施例中，所述发送模块901，还用于执行如下操作：
当所述第一终端设备采用模式3传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备切换到的小区进行重配置，使用所述传输资源向所述第二终端设备传输数据；或者，
当所述第一终端设备采用模式4传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备获取到监测后的资源，使用所述传输资源向所述第二终端设备传输数据。
在本申请的一些实施例中，所述第一无线接入网设备和核心网设备建立有通信连接，所述第二无线接入网设备和所述核心网设备建立有通信连接；
所述第一无线接入网设备和所述第二无线接入网设备之间通过所述核心网设备进行信息转发。
在本申请的一些实施例中，所述业务模型信息，还包括如下信息中的任一种或任几种信息：业务周期信息，业务相对于系统帧号的时间偏移信息，侧行链路数据包优先级PPPP信息，侧行链路数据包可靠性PPPR信息，或者业务的包大小信息。
在本申请的一些实施例中，如图8所示，所述第二无线接入网设备的处理模块802， 还用于执行如下任一或任几种操作：
根据所述业务周期信息确定所述传输资源的资源周期；或者，
根据所述业务相对于系统帧号的时间偏移信息确定所述传输资源相对于起始系统帧号的时域位置；或者，
根据所述PPPP信息确定所述传输资源上承载的数据优先级；或者，
根据所述PPPR信息确定所述传输资源对应的可靠性需求、所述传输资源对应的信道质量；或者，
根据所述业务的包大小信息确定所述传输资源上承载的业务数据量。
需要说明的是，上述装置各模块/单元之间的信息交互、执行过程等内容，由于与本申请方法实施例基于同一构思，其带来的技术效果与本申请方法实施例相同，具体内容可参见本申请前述所示的方法实施例中的叙述，此处不再赘述。
本申请实施例还提供一种计算机存储介质，其中，该计算机存储介质存储有程序，该程序执行包括上述方法实施例中记载的部分或全部步骤。
接下来介绍本申请实施例提供的另一种第一无线接入网设备，请参阅图10所示，第一无线接入网设备1000包括：
接收器1001、发射器1002、处理器1003和存储器1004(其中第一无线接入网设备1000中的处理器1003的数量可以一个或多个，图10中以一个处理器为例)。在本申请的一些实施例中，接收器1001、发射器1002、处理器1003和存储器1004可通过总线或其它方式连接，其中，图10中以通过总线连接为例。
存储器1004可以包括只读存储器和随机存取存储器，并向处理器1003提供指令和数据。存储器1004的一部分还可以包括非易失性随机存取存储器(non-volatile random access memory，NVRAM)。存储器1004存储有操作系统和操作指令、可执行模块或者数据结构，或者它们的子集，或者它们的扩展集，其中，操作指令可包括各种操作指令，用于实现各种操作。操作系统可包括各种系统程序，用于实现各种基础业务以及处理基于硬件的任务。
处理器1003控制第一无线接入网设备的操作，处理器1003还可以称为中央处理单元(central processing Unit，CPU)。具体的应用中，第一无线接入网设备的各个组件通过总线系统耦合在一起，其中总线系统除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都称为总线系统。
上述本申请实施例揭示的方法可以应用于处理器1003中，或者由处理器1003实现。处理器1003可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1003中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1003可以是通用处理器、数字信号处理器(digital signal processing，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field-programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处 理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1004，处理器1003读取存储器1004中的信息，结合其硬件完成上述方法的步骤。
接收器1001可用于接收输入的数字或字符信息，以及产生与第一无线接入网设备的相关设置以及功能控制有关的信号输入，发射器1002可用于通过外接接口输出数字或字符信息。
本申请实施例中，处理器1003，用于执行前述实施例中第一无线接入网设备执行的数据传输方法。
接下来介绍本申请实施例提供的另一种第二无线接入网设备，请参阅图11所示，第二无线接入网设备1100包括：
接收器1101、发射器1102、处理器1103和存储器1104(其中第二无线接入网设备1100中的处理器1103的数量可以一个或多个，图11中以一个处理器为例)。在本申请的一些实施例中，接收器1101、发射器1102、处理器1103和存储器1104可通过总线或其它方式连接，其中，图11中以通过总线连接为例。
存储器1104可以包括只读存储器和随机存取存储器，并向处理器1103提供指令和数据。存储器1104的一部分还可以包括NVRAM。存储器1104存储有操作系统和操作指令、可执行模块或者数据结构，或者它们的子集，或者它们的扩展集，其中，操作指令可包括各种操作指令，用于实现各种操作。操作系统可包括各种系统程序，用于实现各种基础业务以及处理基于硬件的任务。
处理器1103控制第二无线接入网设备的操作，处理器1103还可以称为CPU。具体的应用中，第二无线接入网设备的各个组件通过总线系统耦合在一起，其中总线系统除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都称为总线系统。
上述本申请实施例揭示的方法可以应用于处理器1103中，或者由处理器1103实现第二无线接入网设备处理器1103可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1103中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1103可以是通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1104，处理器1103读取存储器1104中的信息，结合其硬件完成上述方法的步骤。
本申请实施例中，处理器1103，用于执行前述第二无线接入网设备执行的数据传输方法。
接下来介绍本申请实施例提供的另一种第一终端设备，请参阅图12所示，第一终端设 备1200包括：
接收器1201、发射器1202、处理器1203和存储器1204(其中第一终端设备1200中的处理器1203的数量可以一个或多个，图12中以一个处理器为例)。在本申请的一些实施例中，接收器1201、发射器1202、处理器1203和存储器1204可通过总线或其它方式连接，其中，图12中以通过总线连接为例。
存储器1204可以包括只读存储器和随机存取存储器，并向处理器1203提供指令和数据。存储器1204的一部分还可以包括NVRAM。存储器1204存储有操作系统和操作指令、可执行模块或者数据结构，或者它们的子集，或者它们的扩展集，其中，操作指令可包括各种操作指令，用于实现各种操作。操作系统可包括各种系统程序，用于实现各种基础业务以及处理基于硬件的任务。
处理器1203控制第一终端设备的操作，处理器1203还可以称为CPU。具体的应用中，第一终端设备的各个组件通过总线系统耦合在一起，其中总线系统除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都称为总线系统。
上述本申请实施例揭示的方法可以应用于处理器1203中，或者由处理器1203实现第一终端设备处理器1203可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1203中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1203可以是通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1204，处理器1203读取存储器1204中的信息，结合其硬件完成上述方法的步骤。
本申请实施例中，处理器1203，用于执行前述第一终端设备执行的数据传输方法。
在另一种可能的设计中，当该装置为终端内的芯片时，芯片包括：处理单元和通信单元，所述处理单元例如可以是处理器，所述通信单元例如可以是输入/输出接口、管脚或电路等。该处理单元可执行存储单元存储的计算机执行指令，以使该终端内的芯片执行上述第一方面任意一项的无线通信方法。可选地，所述存储单元为所述芯片内的存储单元，如寄存器、缓存等，所述存储单元还可以是所述终端内的位于所述芯片外部的存储单元，如只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)等。
其中，上述任一处提到的处理器，可以是一个通用中央处理器(Central Processing Unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制上述第一方面无线通信方法的程序执行的集成电路。
另外需说明的是，以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以 不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。另外，本申请提供的装置实施例附图中，模块之间的连接关系表示它们之间具有通信连接，具体可以实现为一条或多条通信总线或信号线。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本申请可借助软件加必需的通用硬件的方式来实现，当然也可以通过专用硬件包括专用集成电路、专用CPU、专用存储器、专用元器件等来实现。一般情况下，凡由计算机程序完成的功能都可以很容易地用相应的硬件来实现，而且，用来实现同一功能的具体硬件结构也可以是多种多样的，例如模拟电路、数字电路或专用电路等。但是，对本申请而言更多情况下软件程序实现是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在可读取的存储介质中，如计算机的软盘、U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述的方法。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。
所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存储的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。

Claims (40)

  1. 一种数据传输方法，其特征在于，应用于第一无线接入网设备，包括：
    所述第一无线接入网设备接收第一终端设备发送的所述第一终端设备的业务模型信息；
    所述第一无线接入网设备向第二无线接入网设备发送所述第一终端设备的业务模型信息；
    所述第一无线接入网设备接收所述第二无线接入网设备发送的第一资源配置信息，所述第一资源配置信息包括：所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；
    所述第一无线接入网设备向所述第一终端设备发送配置消息；
    其中，所述配置消息包括：所述第一资源配置信息；或者，
    所述配置消息包括：所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括如下任一或任几种操作：
    所述第一无线接入网设备向所述第二无线接入网设备发送所述第一终端设备支持的频点信息；或者，
    所述第一无线接入网设备向所述第二无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
    所述第一无线接入网设备向所述第二无线接入网设备发送所述第一终端设备的位置信息；或者，
    所述第一无线接入网设备向所述第二无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
    所述第一无线接入网设备向所述第二无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
  3. 根据权利要求1或2所述的方法，其特征在于，如下信息中的任一种或任几种携带在切换请求中：所述业务模型信息，所述第一终端设备支持的频点信息，所述CBR测量结果，所述第一终端设备的位置信息，所述站间同步信息，所述网络制式请求信息；
    其中，所述切换请求由所述第一无线接入网设备向所述第二无线接入网设备发送。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一无线接入网设备接收所述第二无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
    所述第一无线接入网设备接收所述第二无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
  5. 一种数据传输方法，其特征在于，应用于第二无线接入网设备，包括：
    所述第二无线接入网设备接收第一无线接入网设备发送的第一终端设备的业务模型信息；
    所述第二无线接入网设备根据所述第一终端设备的业务模型信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；
    所述第二无线接入网设备向所述第一无线接入网设备发送第一资源配置信息，所述第一资源配置信息包括所述传输资源。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    所述第二无线接入网设备接收所述第一无线接入网设备发送的所述第一终端设备支持的频点信息；或者，
    所述第二无线接入网设备接收所述第一无线接入网设备发送的所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
    所述第二无线接入网设备接收所述第一无线接入网设备发送的所述第一终端设备的位置信息；或者，
    所述第二无线接入网设备接收所述第一无线接入网设备发送的站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
    所述第二无线接入网设备接收所述第一无线接入网设备发送的网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
  7. 根据权利要求6所述的方法，其特征在于，所述方法，还包括：
    所述第二无线接入网设备根据所述第一终端设备支持的频点信息为所述第一终端设备配置载波；或者，
    所述第二无线接入网设备根据所述CBR测量结果为所述第一终端设备确定所述传输资源的位置；或者，
    所述第二无线接入网设备根据所述第一终端设备的位置信息为所述第一终端设备确定所述第一终端设备所在区域对应的资源位置；或者，
    所述第二无线接入网设备根据所述站间同步信息校正所述传输资源的时域位置。
  8. 根据权利要求5至7中任一项所述的方法，其特征在于，所述方法还包括：
    所述第二无线接入网设备向所述第一无线接入网设备发送网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
    所述第二无线接入网设备向所述第一无线接入网设备发送第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
  9. 一种数据传输方法，其特征在于，应用于第一终端设备，包括：
    所述第一终端设备向第一无线接入网设备发送所述第一终端设备的业务模型信息；
    所述第一终端设备接收所述第一无线接入网设备发送的配置消息，所述配置消息包括：第一资源配置信息；或者，所述配置消息包括：所述第一无线接入网设备基于所述第一资 源配置信息产生的第二资源配置信息，所述第一资源配置信息包括：所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源；
    所述第一终端设备使用所述传输资源向所述第二终端设备传输数据。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括如下任一或任几种操作：
    所述第一终端设备向所述第一无线接入网设备发送所述第一终端设备支持的频点信息；或者，
    所述第一终端设备向所述第一无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
    所述第一终端设备向所述第一无线接入网设备发送所述第一终端设备的位置信息；或者，
    所述第一终端设备向所述第一无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
    所述第一终端设备向所述第一无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
  11. 根据权利要求9或10所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备接收所述第一无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
    所述第一终端设备接收所述第一无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
  12. 根据权利要求9至11中任一项所述的方法，其特征在于，所述第一终端设备使用所述传输资源向所述第二终端设备传输数据，包括：
    当所述第一终端设备采用模式3传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备切换到的小区进行重配置，所述第一终端设备使用所述传输资源向所述第二终端设备传输数据；或者，
    当所述第一终端设备采用模式4传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备获取到监测后的资源，所述第一终端设备使用所述传输资源向所述第二终端设备传输数据。
  13. 根据权利要求1至12中任一项所述的方法，其特征在于，所述第一无线接入网设备和核心网设备建立有通信连接，所述第二无线接入网设备和所述核心网设备建立有通信连接；
    所述第一无线接入网设备和所述第二无线接入网设备之间通过所述核心网设备进行信息转发。
  14. 根据权利要求1至13中任一项所述的方法，其特征在于，所述业务模型信息，包 括如下信息中的任一种或任几种信息：业务周期信息，业务相对于系统帧号的时间偏移信息，侧行链路数据包优先级PPPP信息，侧行链路数据包可靠性PPPR信息，或者业务的包大小信息。
  15. 根据权利要求14所述的方法，其特征在于，所述第二无线接入网设备根据所述第一终端设备的业务模型信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，包括：
    所述第二无线接入网设备根据所述业务周期信息确定所述传输资源的资源周期；或者，
    所述第二无线接入网设备根据所述业务相对于系统帧号的时间偏移信息确定所述传输资源相对于起始系统帧号的时域位置；或者，
    所述第二无线接入网设备根据所述PPPP信息确定所述传输资源上承载的数据优先级；或者，
    所述第二无线接入网设备根据所述PPPR信息确定所述传输资源对应的可靠性需求、所述传输资源对应的信道质量；或者，
    所述第二无线接入网设备根据所述业务的包大小信息确定所述传输资源上承载的业务数据量。
  16. 一种无线接入网设备，其特征在于，所述无线接入网设备具体为第一无线接入网设备，所述第一无线接入网设备，包括：
    接收模块，用于接收第一终端设备发送的所述第一终端设备的业务模型信息；
    发送模块，用于向第二无线接入网设备发送所述第一终端设备的业务模型信息；
    所述接收模块，用于接收所述第二无线接入网设备发送的第一资源配置信息；
    处理模块，用于根据所述第一资源配置信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；
    所述发送模块，用于向所述第一终端设备发送配置消息；
    其中，所述配置消息包括：所述第一资源配置信息；或者，
    所述配置消息包括：所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源。
  17. 根据权利要求16所述的无线接入网设备，其特征在于，所述发送模块，还用于执行如下任一或任几种操作：
    向所述第二无线接入网设备发送所述第一终端设备支持的频点信息；或者，
    向所述第二无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
    向所述第二无线接入网设备发送所述第一终端设备的位置信息；或者，
    向所述第二无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
    向所述第二无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所 述第二无线接入网设备请求所述传输资源对应的网络制式。
  18. 根据权利要求16或17所述的无线接入网设备，其特征在于，如下信息中的任一种或任几种携带在切换请求中：所述业务模型信息，所述第一终端设备支持的频点信息，所述CBR测量结果，所述第一终端设备的位置信息，所述站间同步信息，所述网络制式请求信息；
    其中，所述切换请求由所述第一无线接入网设备向所述第二无线接入网设备发送。
  19. 根据权利要求16至18中任一项所述的无线接入网设备，其特征在于，所述接收模块，还用于执行如下操作：
    接收所述第二无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
    接收所述第二无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
  20. 一种无线接入网设备，其特征在于，所述无线接入网设备具体为第二无线接入网设备，所述第二无线接入网设备，包括：
    接收模块，用于接收第一无线接入网设备发送的第一终端设备的业务模型信息；
    处理模块，用于根据所述第一终端设备的业务模型信息确定所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路；
    发送模块，用于向所述第一无线接入网设备发送第一资源配置信息，所述第一资源配置信息包括所述传输资源。
  21. 根据权利要求20所述的无线接入网设备，其特征在于，所述接收模块，还用于执行如下任一或任几种操作：
    接收所述第一无线接入网设备发送的所述第一终端设备支持的频点信息；或者，
    接收所述第一无线接入网设备发送的所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
    接收所述第一无线接入网设备发送的所述第一终端设备的位置信息；或者，
    接收所述第一无线接入网设备发送的站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
    接收所述第一无线接入网设备发送的网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
  22. 根据权利要求21所述的无线接入网设备，其特征在于，所述处理模块，还用于执行如下任一或任几种操作：
    根据所述第一终端设备支持的频点信息为所述第一终端设备配置载波；或者，
    根据所述CBR测量结果为所述第一终端设备确定所述传输资源的位置；或者，
    根据所述第一终端设备的位置信息为所述第一终端设备确定所述第一终端设备所在区域对应的资源位置；或者，
    根据所述站间同步信息校正所述传输资源的时域位置。
  23. 根据权利要求20至22中任一项所述的无线接入网设备，其特征在于，所述发送模块，还用于执行如下操作：
    向所述第一无线接入网设备发送网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
    向所述第一无线接入网设备发送第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
  24. 一种终端设备，其特征在于，所述终端设备具体为第一终端设备，所述第一终端设备，包括：
    发送模块，用于向第一无线接入网设备发送所述第一终端设备的业务模型信息；
    接收模块，用于接收所述第一无线接入网设备发送的配置消息；
    处理模块，用于根据所述配置消息确定第一资源配置信息，或者所述第一无线接入网设备基于所述第一资源配置信息产生的第二资源配置信息，所述第一资源配置信息包括：所述第一终端设备在切换过程中在侧行链路SL上传输数据所需的传输资源，所述切换过程指的是所述第一终端设备从所述第一无线接入网设备向所述第二无线接入网设备进行切换，所述侧行链路为所述第一终端设备和第二终端设备之间的通信链路，所述第二资源配置信息包括：所述第一终端设备在所述切换过程中在所述侧行链路上传输数据所需的传输资源；
    所述发送模块，用于使用所述传输资源向所述第二终端设备传输数据。
  25. 根据权利要求24所述的终端设备，其特征在于，所述发送模块，还用于执行如下任一或任几种操作：
    向所述第一无线接入网设备发送所述第一终端设备支持的频点信息；或者，
    向所述第一无线接入网设备发送所述第一终端设备生成的信道忙碌比例CBR测量结果；或者，
    向所述第一无线接入网设备发送所述第一终端设备的位置信息；或者，
    向所述第一无线接入网设备发送站间同步信息，所述站间同步信息用于指示所述第一无线接入网设备和所述第二无线接入网设备之间的系统帧号SFN偏移信息；或者，
    向所述第一无线接入网设备发送网络制式请求信息，所述网络制式请求信息用于向所述第二无线接入网设备请求所述传输资源对应的网络制式。
  26. 根据权利要求24或25所述的终端设备，其特征在于，所述接收模块，还用于执行如下操作：
    接收所述第一无线接入网设备发送的网络制式指示信息，所述网络制式指示信息用于指示所述传输资源对应的网络制式；或者，
    接收所述第一无线接入网设备发送的第三资源配置信息，所述第三资源配置信息包括如下信息中的至少一种：载波聚合CA配置信息、多路复用配置信息。
  27. 根据权利要求24至26中任一项所述的终端设备，其特征在于，所述发送模块，还用于执行如下操作：
    当所述第一终端设备采用模式3传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备切换到的小区进行重配置，使用所述传输资源向所述第二终端 设备传输数据；或者，
    当所述第一终端设备采用模式4传输时，从所述第一终端设备接收到所述配置消息开始，直至所述第一终端设备获取到监测后的资源，使用所述传输资源向所述第二终端设备传输数据。
  28. 根据权利要求16至27中任一项所述的终端设备，其特征在于，所述第一无线接入网设备和核心网设备建立有通信连接，所述第二无线接入网设备和所述核心网设备建立有通信连接；
    所述第一无线接入网设备和所述第二无线接入网设备之间通过所述核心网设备进行信息转发。
  29. 根据权利要求16至28中任一项所述的设备，其特征在于，所述业务模型信息，包括如下信息中的任一种或任几种信息：业务周期信息，业务相对于系统帧号的时间偏移信息，侧行链路数据包优先级PPPP信息，侧行链路数据包可靠性PPPR信息，或者业务的包大小信息。
  30. 根据权利要求29所述的设备，其特征在于，所述第二无线接入网设备的处理模块，还用于执行如下任一或任几种操作：
    根据所述业务周期信息确定所述传输资源的资源周期；或者，
    根据所述业务相对于系统帧号的时间偏移信息确定所述传输资源相对于起始系统帧号的时域位置；或者，
    根据所述PPPP信息确定所述传输资源上承载的数据优先级；或者，
    根据所述PPPR信息确定所述传输资源对应的可靠性需求、所述传输资源对应的信道质量；或者，
    根据所述业务的包大小信息确定所述传输资源上承载的业务数据量。
  31. 一种无线接入网设备，其特征在于，所述无线接入网设备具体为第一无线接入网设备，所述第一无线接入网设备，包括：至少一个处理器，所述至少一个处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现如权利要求1至4中任一项所述的方法。
  32. 根据权利要求31所述的无线接入网设备，其特征在于，所述无线接入网设备还包括：所述存储器。
  33. 一种无线接入网设备，其特征在于，所述无线接入网设备具体为第二无线接入网设备，所述第二无线接入网设备，包括：至少一个处理器，所述至少一个处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现如权利要求5至8、15中任一项所述的方法。
  34. 根据权利要求33所述的无线接入网设备，其特征在于，所述无线接入网设备还包括：所述存储器。
  35. 一种终端设备，其特征在于，所述终端设备具体为第一终端设备，所述第一终端设备，包括：至少一个处理器，所述至少一个处理器用于与存储器耦合，读取并执行所述存储器中的指令，以实现如权利要求9至14中任一项所述的方法。
  36. 根据权利要求35所述的终端设备，其特征在于，所述终端设备还包括：所述存储 器。
  37. 一种芯片，其特征在于，所述芯片包括处理器，用于支持第一无线接入网设备执行如权利要求1至4中任一项所述的方法，或者支持第二无线接入网设备执行如权利要求5至8、15中任一项所述的方法，或者支持第一终端设备执行如权利要求9至14中任一项所述的方法。
  38. 根据权利要求36所述的芯片，其特征在于，所述芯片还包括存储器，所述存储器用于存储所述第一无线接入网设备、所述第二无线接入网设备、或者所述第一终端设备的程序指令和数据。
  39. 一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行如权利要求1-15任意一项所述的方法。
  40. 一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如权利要求1-15任意一项所述的方法。
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