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WO2020216099A1 - Procédé de communication et dispositif associé - Google Patents

Procédé de communication et dispositif associé Download PDF

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Publication number
WO2020216099A1
WO2020216099A1 PCT/CN2020/084680 CN2020084680W WO2020216099A1 WO 2020216099 A1 WO2020216099 A1 WO 2020216099A1 CN 2020084680 W CN2020084680 W CN 2020084680W WO 2020216099 A1 WO2020216099 A1 WO 2020216099A1
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WIPO (PCT)
Prior art keywords
message
base station
information
identity
network slice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/084680
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English (en)
Chinese (zh)
Inventor
杨水根
布拉克次欧意姆
帕特欧米契拉卡斯埃马努伊尔
奥鲁佛松亨里克
张宏卓
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2020216099A1 publication Critical patent/WO2020216099A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and related equipment.
  • the fifth generation (5th Generation, 5G) communication system introduces the concept of network slicing.
  • the network slicing technology can divide a physical network into multiple virtual networks.
  • a virtual network is treated as a "network slice", and each network slice is independent of each other.
  • Different protocol data unit (PDU) sessions in a terminal device may require network slices corresponding to each PDU session to provide services.
  • PDU protocol data unit
  • the network slices supported by the base station and the priority of the network slices will affect the PDU sessions that can be established in the base station.
  • the two base stations cannot determine the priority of the network slice supported by each other.
  • the two base stations cannot determine the network slices supported by each other in the existing implementation solution.
  • the embodiments of the present application provide a communication method and related equipment, which help optimize the handover performance between the first base station and the second base station.
  • an embodiment of the present application provides a communication method, including:
  • the first base station sends a first message to the core network device.
  • the first message is used to request information about the network slices supported by at least one cell contained in the second base station, or the first message is used to request information contained in the second base station.
  • Information about a network slice supported by at least one tracking area to which at least one cell belongs where the information about the network slice includes the identifier of the network slice; optionally, the information about the network slice also includes the priority of the network slice; the first base station receives the core network A second message sent by the device, where the second message includes information of a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the first base station obtains the network slice information supported by the at least one tracking area to which at least one cell belongs to the second base station by interacting with the core network equipment, which helps to optimize the first base station and the second base station. Handover performance between base stations.
  • the information of the network slice supported by the at least one tracking area to which at least one cell belongs included in the second base station in the second message is determined by the core network device. This improves the efficiency of obtaining network slice information.
  • the first base station sending the first message to the core network device is specifically: the first base station sends the first message to the core network device, so that the core network device sends the first message to the second base station
  • the third message, the role of the third message is consistent with the role of the first message
  • the first base station receiving the second message sent by the core network device is specifically: the first base station receives the second message sent by the core network device, and the second message is sent by the core network device after receiving the fourth message sent by the second base station,
  • the fourth message includes the information of the network slice supported by the at least one tracking area to which the at least one cell belongs, and the second message and the fourth message include the identity of the first base station and the identity of the second base station.
  • the core network device interacts with the second base station to send to the first base station information about the network slices supported by at least one tracking area to which at least one cell contained in the second base station belongs.
  • the first message is a first uplink radio access network configuration transfer message
  • the second message is a first downlink radio access network configuration transfer message
  • the third message is a second downlink radio access network configuration transfer message
  • the fourth message is a second uplink radio access network configuration transfer message.
  • the first base station sending the first message to the core network device is specifically: the first base station sends the first message to the core network device, so that the core network device sends the first message to the second base station
  • the fifth message, the first message and the fifth message are respectively used to request the switching of N PDU sessions in the terminal device from the first base station to the target cell in the second base station, where the first message and the fifth message include N PDUs The identity of each PDU session in the session and the identity of the target cell, where N is a positive integer;
  • the first base station receiving the second message sent by the core network device is specifically: the first base station receives the second message sent by the core network device, the second message is sent by the core network device after receiving the sixth message sent by the second base station,
  • the sixth message includes information about the network slices supported by the at least one tracking area to which at least one cell belongs and included in the second base station;
  • the first message further includes the identity of the second base station; or, the first message further includes the identity of the second base station and the identity of at least one tracking area.
  • the first message is a handover request message
  • the fifth message is a handover request message
  • the second message is a handover preparation failure message, and the sixth message is a handover failure message; or, the second message is a handover command message, and the sixth message is a handover request confirmation message.
  • a base station obtains information about network slices supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the second message may also include at least one tracking area location of at least one neighboring cell of the cell included in the second base station.
  • the information of the supported network slices helps to optimize the handover performance between the first base station and the second base station.
  • the first base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • the second base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • an embodiment of the present application provides a communication method, including:
  • the core network device receives a first message from the first base station, where the first message is used to request to obtain information about the network slice supported by at least one cell contained in the second base station, or the first message is used to request to obtain the information contained in the second base station.
  • Information about the network slice supported by at least one tracking area to which at least one cell belongs where the information about the network slice includes the identifier of the network slice; optionally, the information about the network slice also includes the priority of the network slice;
  • the core network device A base station sends a second message, and the second message includes information of a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the core network device may send to the first base station information about the network slices supported by the at least one tracking area of the at least one cell contained in the second base station, which helps to optimize the relationship between the first base station and the second base station. Switching performance.
  • the information of the network slices supported by the at least one tracking area to which at least one cell belongs included in the second base station is determined by the core network device. This improves the efficiency of obtaining network slice information.
  • the first message includes the identity of the second base station; or, the first message includes the identity of the second base station and the identity of at least one tracking area; or, the first message includes the identity of the second base station and the identity of at least one cell.
  • the method further includes: the core network device sends a third message to the second base station, and the third message is used to request to obtain the second message.
  • the second base station contains information about the network slices supported by at least one cell, or the third message is used to request information about the network slices supported by at least one tracking area to which at least one cell belongs to the second base station, the first message and The third message includes the identity of the first base station and the identity of the second base station; the core network device receives the fourth message sent by the second base station, and the fourth message includes the at least one tracking area to which at least one cell contained in the second base station belongs.
  • the second message and the fourth message include the identity of the first base station and the identity of the second base station.
  • the core network device can send to the first base station information about network slices supported by at least one tracking area to which at least one cell contained in the second base station belongs.
  • the first message includes the identity of the first base station and the identity of the second base station.
  • the core network device determines that the first message was sent by the first base station according to the identity of the first base station, and the core network device can send the third message to the second base station according to the identity of the second base station.
  • the first message is used to obtain information about the network slices supported by the tracking area to which all cells included in the second base station belong.
  • the first message further includes an identifier of at least one tracking area in the second base station.
  • the first message is used to obtain information about network slices supported by one or more tracking areas, where the one or more tracking areas are a subset of the tracking area set of the second base station,
  • the tracking area set includes tracking areas to which all cells included in the second base station belong. In this way, it is possible to feed back the network slice information supported by the tracking area that the first base station wants to obtain to the first base station, which is more targeted.
  • the first message is a first uplink radio access network configuration transfer message
  • the fourth message is a second uplink radio access network configuration transfer message
  • the second message is a first downlink radio access network configuration transfer message
  • the third message is a second downlink radio access network configuration transfer message.
  • the method further includes: the core network device sends a fifth message to the second base station, where the first message and the fifth message are respectively It is used to request to switch N PDU sessions in the terminal equipment from the first base station to the target cell in the second base station, where the first message and the fifth message include the identifier of each PDU session in the N PDU sessions and the target cell's Identification; the core network device receives a sixth message sent by the second base station, where the sixth message includes the information of the network slice supported by the at least one tracking area to which at least one cell belongs and included in the second base station, and N is a positive integer;
  • the first message further includes the identity of the second base station; or, the first message further includes the identity of the second base station and the identity of at least one tracking area.
  • the first message is a handover request message
  • the fifth message is a handover request message
  • the second message is a handover preparation failure message, and the sixth message is a handover failure message; or, the second message is a handover command message, and the sixth message is a handover request confirmation message.
  • this possible implementation solution can be applied to a scenario where there is no communication interface between the first base station and the second base station, and the first base station needs to switch N PDU sessions of the terminal device to the second base station.
  • the first base station may obtain, through the core network device, the information of the network slice supported by the at least one tracking area to which at least one cell included in the second base station belongs.
  • the second message may also include at least one tracking area supported by at least one neighboring cell of the cell included in the second base station. Information about the network slice. It helps to optimize the handover performance between the first base station and the second base station.
  • the first base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • the second base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • an embodiment of the present application provides a communication method, including:
  • the second base station receives the first message sent by the core network device, where the first message is used to request information about the network slices supported by at least one cell contained in the second base station, or the first message is used to request to obtain Information about a network slice supported by at least one tracking area to which at least one cell belongs, where the information about the network slice includes the identifier of the network slice; optionally, the information about the network slice also includes the priority of the network slice; the second base station sends the core The network device sends a second message, where the second message includes information about a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the second base station feeds back to the core network equipment information about the network slices supported by at least one tracking area to which at least one cell belongs, so that the core network equipment sends the information to the first base station, which is helpful To optimize the handover performance between the first base station and the second base station.
  • the first message and the second message include the identity of the first base station and the identity of the second base station.
  • the first message is a downlink radio access network configuration transfer message; the second message is an uplink radio access network configuration transfer message.
  • the first message is used to request to switch N PDU sessions in the terminal device from the first base station to the target cell in the second base station, and the first message includes N PDU sessions The identity of each PDU session in the PDU and the identity of the target cell;
  • the first message is a handover request message; the second message is a handover failure message or a handover request confirmation message.
  • this possible implementation solution can be applied to a scenario where there is no communication interface between the first base station and the second base station, and the first base station needs to switch N PDU sessions of the terminal device to the second base station.
  • the first base station obtains, through the core network device, the information of the network slice supported by the at least one tracking area to which at least one cell included in the second base station belongs.
  • the second message may further include information about a network slice supported by at least one tracking area to which at least one neighboring cell of the cell included in the second base station belongs. It helps to optimize the handover performance between the first base station and the second base station.
  • the first base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • the second base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • an embodiment of the present application provides a communication method, including:
  • the first base station generates the first message and sends the first message.
  • the first message includes information about at least one first network slice supported by the first base station, and the information about the first network slice includes an identifier of the first network slice; optionally, the information about the first network slice further includes the first network slice.
  • the first message includes the identification of at least one tracking area to which at least one cell belongs and the information of at least one second network slice supported by the tracking area included in the first base station, and the information about the second network slice includes the second network
  • the identifier of the slice optionally, the information of the second network slice further includes the priority of the second network slice.
  • the first base station can send the network slices supported by the first base station to other base stations.
  • the priority of each network slice in the supported network slices is also sent, which helps to optimize the first base station and Handover performance between second base stations.
  • the first base station sends the first message specifically: the first base station directly sends the first message to the second base station.
  • the first message is an Xn establishment request message or an Xn establishment response message.
  • the solution of the fourth aspect can be applied to the scenario where the first base station and the second base station establish a communication interface; or,
  • the first message is a next-generation radio access network node configuration update message or a next-generation radio access network node configuration update confirmation message.
  • the solution of the fourth aspect can be applied to a scenario where the first base station and the second base station have established communication interfaces.
  • the first message sent by the first base station is specifically: the first base station sends the first message to the core network device, so that the core network device sends the second message to the second base station, the first message and the second message include the identity of the first base station and The identity of the second base station, the first message and the second message include information about at least one first network slice supported by the first base station; or, the first message and the second message include at least one cell belonging to at least one cell included in the first base station The identification of the tracking area and the information of at least one second network slice supported by the tracking area.
  • the first message is an uplink radio access network configuration transfer message; the second message is a downlink radio access network configuration transfer message.
  • the first base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • the second base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • an embodiment of the present application provides a communication method, including:
  • the second base station receives the first message, where the first message includes information about at least one first network slice supported by the first base station, and the information about the first network slice includes the identifier of the first network slice and the priority of the first network slice; or,
  • the first message includes the identification of at least one tracking area to which at least one cell belongs and the information of at least one second network slice supported by the tracking area included in the first base station.
  • the information of the second network slice includes the identification of the second network slice and the second network slice. The priority of the network slice.
  • the second base station can receive the network slice supported by the first base station, and optionally, can also receive the priority of each network slice in the network slice supported by the first base station, which helps to optimize the first base station. Handover performance between the base station and the second base station.
  • the second base station receiving the first message specifically includes: the second base station receiving the first message sent by the first base station.
  • the first message is an Xn establishment request message or an Xn establishment response message.
  • the solution of the fourth aspect can be applied to the scenario where the first base station and the second base station establish a communication interface; or,
  • the first message is a next-generation radio access network node configuration update message or a next-generation radio access network node configuration update confirmation message.
  • the solution of the fifth aspect can be applied to a scenario where the first base station and the second base station have established communication interfaces.
  • the second base station receiving the first message is specifically: the second base station receives the first message sent by the core network device, the first message is sent by the core network device after receiving the second message sent by the first base station, and the first message and the first message
  • the second message includes the identity of the first base station and the identity of the second base station, the first message and the second message include information about at least one first network slice supported by the first base station; or, the first message and the second message include the first base station The identity of at least one tracking area to which at least one cell belongs and the information of at least one second network slice supported by the tracking area are included.
  • the first message is a downlink radio access network configuration transfer message; the second message is an uplink radio access network configuration transfer message.
  • the first base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • the second base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • an embodiment of the present application provides a communication method, including:
  • the source base station sends a first message, the first message is used to request the N PDU sessions of the terminal device to be switched from the source base station to the target cell in the target base station, the first message includes the identity and target of each PDU session in the N PDU sessions The identity of the cell; the source base station receives a second message for indicating a handover response, the second message includes indication information, and the indication information is used to indicate the reason for the failure of the M PDU session handover in the terminal device in the case of insufficient resources in the target cell
  • the network slice has no available resources because the network slice corresponding to at least one PDU session has a low priority in the tracking area to which the target cell belongs.
  • N is a positive integer
  • M is a positive integer less than or equal to N.
  • the target base station in the case where the source base station requests to switch the N PDU sessions of the terminal equipment to the target cell in the target base station, the target base station includes indication information in the message for indicating the handover response to indicate that it is in the target cell
  • the network slice corresponding to the failed M PDU sessions has a lower priority in the tracking area to which the target cell belongs, resulting in that the network slice has no available resources, so the next request for the source base station will be
  • the source base station can refer to the instruction information sent by the target base station to determine whether to switch, which improves the probability of successful switching.
  • the source base station sending the first message specifically means that the source base station sends the first message to the target base station, and the first message is a handover request message;
  • the source base station receives the second message for indicating the handover response specifically: the source base station receives the second message for indicating the handover response sent by the target base station, and the second message is a handover preparation failure message or a handover request confirmation message.
  • the first message includes the identifier of the network slice corresponding to each PDU session.
  • information interaction can be implemented through core network equipment.
  • the source base station sends the first message specifically: the source base station sends the first message to the core network device, so that the core network device sends a third message to the target base station, and the third message is used to request N PDU sessions in the terminal device from the source base station. Switch to the target cell in the target base station.
  • the third message includes the identifier of each PDU session in the N PDU sessions, the identifier of the network slice corresponding to each PDU session, and the identifier of the target cell.
  • the first message is a handover request message, and the first message
  • the third message is a handover request message;
  • the source base station receives the second message for indicating the handover response specifically: the source base station receives the second message for indicating the handover response sent by the core network device, the second message is a handover preparation failure message or a handover command message, and a handover preparation failure message It is sent by the core network device after receiving the handover failure message sent by the target base station.
  • the handover command message is sent by the core network device after receiving the handover request confirmation message sent by the target base station.
  • the handover failure message or the handover request confirmation message includes instructions information.
  • the source base station may send a seventh message to the control device, where the seventh message includes the identifier and indication information of the target cell.
  • the source base station is used to notify the control device that when the resources of the target cell are insufficient, the access of the PDU session is affected by the lower priority of the network slice corresponding to the M PDU sessions in the target cell.
  • the source base station receives an eighth message sent by the control device, where the eighth message includes information about a network slice reconfigured for the TA to which the target cell belongs, and the network slice information includes an identifier of the network slice supported by the TA to which the target cell belongs And at least one of the priorities of each network slice in the supported network slices.
  • the control device can also notify the source base station of the information about the network slice reconfigured for the TA to which the target cell belongs, so that the source base station can refer to it.
  • the first base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • the second base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • an embodiment of the present application provides a communication method, including:
  • the target base station receives the first message.
  • the first message is used to request the switching of N PDU sessions in the terminal device from the source base station to the target cell in the target base station.
  • the first message includes the identifier of each PDU session in the N PDU sessions, each The identity of the network slice corresponding to each PDU session and the identity of the target cell; the target base station sends a second message for indicating a handover response, the second message includes indication information, and the indication information is used to indicate that in the case of insufficient resources of the target cell,
  • the reason for the failure of switching M PDU sessions in the terminal device is that the network slice corresponding to at least one PDU session has a low priority in the tracking area to which the target cell belongs.
  • the network slice has no available resources, N is a positive integer, and M is A positive integer less than or equal to N.
  • the target base station may include indication information in the message for indicating the handover response to indicate
  • the network slice corresponding to the failed M PDU sessions has a lower priority in the tracking area to which the target cell belongs, resulting in that the network slice has no available resources, so that the source base station needs the next time
  • the source base station can refer to the previous instruction information sent by the target base station to determine whether to switch, which improves the probability of successful switching.
  • the target base station receiving the first message is specifically: the target base station receives the first message sent by the source base station, and the first message is a handover request message;
  • the second message sent by the target base station to indicate the handover response is specifically: the target base station sends a second message for indicating the handover response to the source base station, and the second message is a handover preparation failure message or a handover request confirmation message.
  • information interaction can be implemented through core network equipment.
  • the first message is a handover request message
  • the second message is a handover failure message or a handover request confirmation message
  • the target base station receives the first message specifically: the target base station receives the first message sent by the core network device, the first message is sent by the core network device after receiving the third message sent by the source base station, and the third message is used to request the terminal
  • the PDU session in the device is handed over from the source base station to the target cell in the target base station, the third message includes the identity of each PDU session in the N PDU sessions and the identity of the target cell, and the third message is a handover request message;
  • the second message sent by the target base station to indicate the handover response is specifically: the target base station sends a handover failure message to the core network device, so that the core network device sends a handover preparation failure message to the source base station, and the handover preparation failure message includes indication information; or, The target base station sends a handover request confirmation message to the core network device, so that the core network device sends a handover command message to the source base station, where the handover command message includes indication information.
  • the method further includes:
  • the target base station sends a fourth message to the control device, the fourth message includes the identification and indication information of the target cell; the target base station receives the fifth message sent by the control device, and the fifth message includes the network slice reconfigured for the tracking area to which the target cell belongs Information, the information of the network slice includes at least one of the identification of the network slice supported by the tracking area to which the target cell belongs and the priority of the network slice.
  • the target base station feeds back the indication information to the control device, it indicates that in the case of insufficient resources of the target cell, the target cell’s access to the PDU session is affected due to the low priority of the network slice corresponding to the PDU session, and the control device At least one of the identification of the network slice and the priority of the network slice supported by the tracking area to which the target cell belongs may be adjusted to meet the PDU session switching requirement.
  • the first base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • the second base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • an embodiment of the present application provides a communication method, including:
  • the control device receives the first message sent by the first base station.
  • the first message includes the identification and indication information of the target cell contained in the second base station.
  • the indication information is used to indicate that when the resources of the target cell are insufficient, at least one PDU in the terminal device
  • the reason for the session switching failure is that the network slice corresponding to at least one PDU session has a low priority in the tracking area to which the target cell belongs.
  • the network slice has no available resources; the control device sends a second message to the second base station,
  • the message includes information about the network slice reconfigured for the tracking area to which the target cell belongs.
  • the information about the network slice includes at least one of the identification of the network slice supported by the tracking area to which the target cell belongs and the priority of each network slice in the supported network slice.
  • the first base station and the second base station may be the same base station or different base stations.
  • control device may also send a third message to the first base station, and the third message includes a network slice reconfigured for the tracking area to which the target cell belongs Information.
  • the control device after receiving the indication information, can determine that in the case of insufficient resources of the target cell, the tracking area to which the target cell belongs is affected by the low priority of the network slice corresponding to the PDU session for which the handover fails.
  • the access of the PDU session in this way, the control device can adjust at least one of the identification of the network slice and the priority of the network slice supported by the tracking area to which the target cell belongs to meet the handover requirement.
  • the first base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • the second base station is a centralized unit CU or a centralized unit control plane CU-CP network element.
  • an embodiment of the present application provides a base station, which is a first base station and includes:
  • the sending module is configured to send a first message to the core network device, where the first message is used to request to obtain the information of the network slice supported by at least one cell included in the second base station, or the first message is used to request to obtain
  • the second base station includes information about network slices supported by at least one tracking area to which at least one cell belongs, where the information about the network slice includes the identifier of the network slice and the priority of the network slice;
  • the receiving module is configured to receive a second message sent by the core network device, where the second message includes information of a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the first base station may also implement the foregoing first aspect and the method executed in any one of the possible implementation manners of the first aspect.
  • an embodiment of the present application provides a core network device, including:
  • the receiving module is configured to receive a first message from a first base station, where the first message is used to request information about network slices supported by at least one cell included in the second base station, or the first message is used to request Acquire information about the network slices supported by the at least one tracking area to which at least one cell belongs, included in the second base station, where the network slice information includes the identifier of the network slice; optionally, the network slice information further includes all The priority of the network slicing;
  • the sending module is configured to send a second message to the first base station, where the second message includes information about a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the core network device may also implement the method executed in the foregoing second aspect and any one of the possible implementation manners of the second aspect.
  • an embodiment of the present application provides a base station, which is characterized in that the base station is a second base station and includes:
  • the receiving module is configured to receive a first message sent by a core network device, where the first message is used to request information about network slices supported by at least one cell included in the second base station, or the first message is used to request Acquire information about the network slices supported by the at least one tracking area to which at least one cell belongs, included in the second base station, where the network slice information includes the identifier of the network slice; optionally, the network slice information further includes all The priority of the network slicing;
  • the sending module is configured to send a second message to the core network device, where the second message includes information about a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the second base station may also implement the method performed by the foregoing third aspect and any one of the possible implementation manners of the third aspect.
  • an embodiment of the present application provides a base station, which is a first base station and includes:
  • the sending module is used to send the first message
  • the first message includes information about at least one first network slice supported by the first base station, and the information about the first network slice includes an identifier of the first network slice; optionally, the first network slice
  • the network slice information also includes the priority of the first network slice; or, the first message includes the identification of at least one tracking area to which at least one cell included in the first base station belongs and at least one tracking area supported by the tracking area.
  • Information about a second network slice where the information about the second network slice includes the identifier of the second network slice; optionally, the information about the second network slice further includes the priority of the second network slice;
  • the first base station may also implement the foregoing fourth aspect and the method executed in any one of the possible implementation manners of the fourth aspect.
  • an embodiment of the present application provides a base station, which is a second base station, and includes:
  • a receiving module configured to receive a first message, where the first message includes information about at least one first network slice supported by a first base station, and the information about the first network slice includes an identifier of the first network slice; optional , The information of the first network slice further includes the priority of the first network slice; or, the first message includes the identification of at least one tracking area to which at least one cell contained in the first base station belongs and the Information about at least one second network slice supported by the tracking area, the information about the second network slice includes an identifier of the second network slice; optionally, the information about the second network slice further includes the second network slice The priority of the network slice.
  • the second base station may also implement the foregoing fifth aspect and the method executed in any one of the possible implementation manners of the fifth aspect.
  • an embodiment of the present application provides a base station, which is a source base station, and includes:
  • the sending module is configured to send a first message, the first message is used to request to switch N PDU sessions of the terminal device from the source base station to the target cell in the target base station, and the first message includes the N The identifier of each PDU session in the PDU session and the identifier of the target cell;
  • the receiving module is configured to receive a second message for indicating a handover response, where the second message includes indication information, and the indication information is used to indicate that the M PDUs in the terminal device are insufficient when the resources of the target cell are insufficient
  • the reason for the session switching failure is that the network slices corresponding to the M PDU sessions have low priority in the tracking area to which the target cell belongs, and the network slices have no available resources.
  • N is a positive integer
  • M is less than or A positive integer equal to N.
  • the source base station may also implement the above-mentioned sixth aspect and the method executed in any one of the possible implementation manners of the sixth aspect.
  • an embodiment of the present application provides a base station, which is a target base station, and includes:
  • the receiving module is configured to receive a first message, the first message is used to request the switching of N PDU sessions in the terminal device from the source base station to the target cell in the target base station, and the first message includes the N The identifier of each PDU session in the PDU session, the identifier of the network slice corresponding to each PDU session, and the identifier of the target cell;
  • the sending module is configured to send a second message for indicating a handover response, where the second message includes indication information, and the indication information is used to indicate M PDUs in the terminal device when the target cell has insufficient resources
  • the reason for the session switching failure is that the network slices corresponding to the M PDU sessions have low priority in the tracking area to which the target cell belongs, and the network slices have no available resources.
  • N is a positive integer, and M is less than or A positive integer equal to N.
  • the target base station may also implement the method performed by the seventh aspect and any one of the possible implementation manners of the seventh aspect.
  • an embodiment of the present application provides a control device, including:
  • the receiving module is configured to receive a first message sent by the first base station, where the first message includes the identification and indication information of the target cell included in the second base station, and the indication information is used to indicate that the target cell has insufficient resources ,
  • the reason for the failure of the switching of M PDU sessions in the terminal device is that the network slices corresponding to the M PDU sessions have low priority in the tracking area to which the target cell belongs, and the network slices have no available resources.
  • M is Positive integer
  • the sending module is configured to send a second message to the second base station, where the second message is information about the reconfigured network slice of the tracking area to which the target cell belongs, and the information about the network slice includes the information about the network slice to which the target cell belongs At least one of the identification of the network slice supported by the tracking area and the priority of each network slice in the supported network slice.
  • control device may also implement the method performed by the eighth aspect and any one of the possible implementation manners of the eighth aspect.
  • an embodiment of the present application provides a communication device.
  • the communication device may be the base station in the above device design, or a chip set in the base station.
  • the communication device includes: a processor, a memory, and a transceiver;
  • the transceiver is used to receive and send messages
  • the memory is used to store instructions
  • the processor is used to execute the instructions stored in the memory.
  • the communication device executes the above-mentioned first aspect, third aspect, fourth aspect, fifth aspect, sixth aspect, seventh aspect and each The method executed by any possible implementation in the aspect.
  • an embodiment of the present application provides a communication device.
  • the communication device may be the core network device in the above device design, or a chip set in the core network device.
  • the communication device includes: a processor, a memory, and a transceiver;
  • the transceiver is used to receive and send messages
  • the memory is used to store instructions
  • the processor is configured to execute instructions stored in the memory.
  • the communication device executes the second aspect and the method executed by any one of the possible implementations of the second aspect.
  • an embodiment of the present application provides a communication device.
  • the communication device may be a control device in the above device design, or a chip set in the control device.
  • the communication device includes: a processor, a memory, and a transceiver;
  • the transceiver is used to receive and send messages
  • the memory is used to store instructions
  • the processor is configured to execute instructions stored in the memory.
  • the communication device executes the eighth aspect and the method executed by any one of the eighth aspect.
  • the embodiments of the present application provide a computer program product.
  • the computer program product includes: computer program code.
  • the computer program code runs on a computer, the computer executes the first, third, and The fourth aspect, the fifth aspect, the sixth aspect, the seventh aspect, and the method in any possible implementation manner of each aspect.
  • the embodiments of the present application provide a computer program product
  • the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes the second aspect and the second aspect The method in any possible implementation.
  • the embodiments of the present application provide a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes the eighth aspect and the eighth aspect The method in any possible implementation.
  • the embodiments of the present application provide a readable storage medium, which is used to store instructions to enable the aforementioned first, third, fourth, fifth, and sixth aspects to ,
  • the seventh aspect and any possible implementation manners of all aspects thereof are realized.
  • an embodiment of the present application provides a readable storage medium, which is used to store instructions to enable the foregoing second aspect and any possible implementation manner of the second aspect to be implemented.
  • the embodiments of the present application provide a readable storage medium, the readable storage medium is used to store instructions to implement the eighth aspect and any possible implementation manners in the eighth aspect.
  • embodiments of the present application provide a communication system, which includes a first base station, a core network device, and a second base station; wherein, the first base station is used to perform the above-mentioned first aspect, fourth aspect, The method executed by the sixth aspect and any one of the possible implementation manners of the various aspects; the second base station is used to execute any one of the foregoing third, fifth, and seventh aspects, and any one of the possible implementation manners thereof The executed method; the core network device is used to execute the method executed by the second aspect and any one of the possible implementations of the second aspect.
  • FIG. 1A is a schematic diagram of a possible communication system architecture provided by an embodiment of this application.
  • FIG. 1B is a schematic diagram of the architecture of a CU-DU separated base station in a 5G communication system according to an embodiment of this application;
  • FIG. 2 is a schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 3 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 5 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 6 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 7 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of this application.
  • FIG. 9 is a schematic structural diagram of a base station provided by an embodiment of this application.
  • FIG. 10 is a schematic structural diagram of another base station provided by an embodiment of this application.
  • FIG. 11 is a schematic structural diagram of a core network device provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of another core network device provided by an embodiment of this application.
  • FIG. 13 is a schematic structural diagram of a network communication system provided by an embodiment of this application.
  • FIG. 14 is a schematic structural diagram of another network communication system provided by an embodiment of this application.
  • FIG. 1A provides a schematic diagram of a possible communication system architecture for an embodiment of this application.
  • the communication system includes core network equipment 101, base stations (base station 102 and base station 103 as shown in FIG. 1A), terminal equipment (terminal equipment 104, terminal equipment 105, and terminal equipment 106 as shown in FIG. 1A).
  • the base station can be connected to at least one terminal device.
  • the base station 102 is connected to the terminal device 104 and the terminal device 105
  • the base station 103 is connected to the terminal device 106.
  • the base station may be connected to at least one core network device, for example, the base station 102 and the base station 103 are connected to the core network device 101 respectively.
  • the core network device 103 There are communication interfaces between the core network device 103 and the base station 102 and the base station 103 respectively, so that the core network device 103 can communicate with the base station 102 and the base station 103 respectively.
  • the communication interface is called N2 interface or NG interface in this application.
  • the two can communicate directly.
  • the direct communication means that the two base stations may not need to communicate through core network equipment or other equipment.
  • the communication interface between the base station 102 and the base station 103 may be referred to as an Xn interface.
  • the network slice involved in this application is a logical network that provides specific network capabilities and network characteristics. It can be a logical network with different network capabilities and network characteristics customized according to different service requirements or tenants based on physical or virtual network infrastructure.
  • a network slice is composed of a set of network functions and the required resources (for example, computing resources, storage resources, and network resources).
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low latency communications
  • MMTC massive machine type communications
  • the network slices supported by the base station and the priority of the network slices will affect the PDU sessions that can be established in the base station. Regardless of whether the two base stations establish an Xn interface, in the existing implementation scheme, the two base stations cannot determine the priority of the network slice supported by each other. In the case that the two base stations have not established the Xn interface, the two base stations cannot determine the network slices supported by each other in the existing implementation solution.
  • the source base station only determines whether to handover and determines the target cell to be handed over based on the measurement report reported by the terminal equipment, specifically if the measurement reported by the terminal equipment The signal quality strength of the target cell in the report is greater than a certain threshold, the source base station requests to switch the PDU session of the terminal device to the target cell of the target base station.
  • the success of handover is related to multiple factors, such as whether the tracking area to which the target cell belongs supports the network slice corresponding to the PDU session in the terminal device, and the network slice corresponding to the PDU session in the terminal device belongs to the target cell.
  • the priority in the tracking area is related and so on.
  • the target base station includes cell 1 and cell 2, and the supported network slices and priority of network slices are as follows:
  • Cell 1 Support network slice #11 and network slice #12; the priority of network slice #11 is lower than network slice #12;
  • Cell 2 Support network slice #11 and network slice #13; network slice #11 has a higher priority than network slice #13;
  • the terminal device is communicating with the source base station in PDU session S1 and PDU session S2, and is moving to the target base station.
  • the measurement report reported by the terminal device is that the signal strength of cell 1 is greater than a certain threshold
  • the source base station will select cell 1 in the target base station as the target cell, and request to switch the PDU session S1 and PDU session S2 of the terminal device to the target cell .
  • the network slice corresponding to the PDU session S1 of the terminal device is network slice #11
  • the network slice corresponding to the PDU session S2 is network slice #14.
  • network slice #11 in cell 1 Since the priority of network slice #11 in cell 1 is lower than network slice #12, terminal equipment cannot get the optimal service in cell 1. For example, when the load of cell 1 is too large, network slice #12 in cell 1 is given priority Other terminal equipment served, and in the above situation, although the signal strength of cell 2 is lower than the signal strength of cell 1, but network slice #11 in cell 2 has a high priority, the terminal device can be obtained in cell 2 Better service. In addition, in the above situation, the target base station may refuse to switch PDU session S1. For example, because network slice #11 has a low priority in the tracking area to which cell 1 belongs, the load of network slice #11 in cell 1 is high. When there are no resources available.
  • the source base station cannot determine the network slices supported by the target cell and the priority of each network slice in the supported network slices, handover occurs because the information cannot be determined.
  • the target base station will reject the handover of the PDU session; for another example, if the network slice corresponding to the PDU session of the terminal device is in the target cell
  • the low priority in the tracking area causes the network slice to have no available resources, and the target base station will reject the switching of the PDU session. This reduces the probability of a successful handover.
  • the first base station (for example, the source base station in the above example) can obtain at least one cell (for example, the source base station in the above example) included in the second base station (for example, the target base station in the above example).
  • the identification of the network slice supported by at least one tracking area to which the target cell in the example belongs and the priority of each network slice in the supported network slice is also important to optimize the handover performance of the network.
  • the existing handover response message sent by the target base station to the source base station only contains the response message that the target cell refuses to access the terminal device, so the source base station cannot determine the cause of the handover failure .
  • the network slice has no available resources, but because the source base station cannot determine the handover failure The reason is that for the case where the source base station needs to request the next time to switch the PDU session corresponding to the network slice to the target cell, the source base station will still send a handover request, and the handover will still fail, which reduces the probability of a successful handover.
  • the target base station may include indication information in the response message that the terminal device is denied access.
  • the indication information is used to indicate that in the case of insufficient resources in the target cell, the terminal device
  • the network slice corresponding to at least one PDU session has a low priority in the tracking area to which the target cell belongs, resulting in no available resources for the network slice.
  • the source base station can refer to the previous indication sent by the target base station to determine whether Switching to the target base station improves the probability of a successful handover.
  • Terminal equipment It can be a user equipment (UE), and the UE is connected to the network side through a base station.
  • UE user equipment
  • it can be a handheld terminal device, a notebook computer, a subscriber unit, a cellular phone, Smart phone (smart phone), wireless data card, personal digital assistant (personal digital assistant, PDA) computer, tablet computer, wireless modem (modem), handheld device (handheld), laptop computer (laptop computer), cordless phone (cordless phone) or wireless local loop (wireless local loop, WLL) station, machine type communication (machine type communication, MTC) terminal or other devices that can access the network.
  • PDA personal digital assistant
  • modem handheld device
  • laptop computer laptop computer
  • cordless phone cordless phone
  • WLL wireless local loop
  • machine type communication machine type communication
  • Base station Mainly responsible for radio resource management, quality of service (QoS) management, data compression and encryption on the air interface side.
  • QoS quality of service
  • the core network equipment may be an access and mobility management function (AMF), which is mainly responsible for functions such as access control, mobility management (MM), attachment and detachment, and gateway selection.
  • AMF access and mobility management function
  • MM mobility management
  • attachment and detachment and gateway selection.
  • gateway selection The core network equipment involved in the embodiments of this application is not limited to the AMF.
  • Control device used to configure the network slices supported by each tracking area and the priority of each network slice in the supported network slices; and configure the tracking area to which the cell belongs.
  • the control device may be an operation administration and maintenance (OAM) system or a network management system. This application does not limit the naming method of the control device.
  • OAM operation administration and maintenance
  • Tracking area is the basic unit of location management of terminal equipment in a communication system, and it consists of one or more cells.
  • a cell is an area covered by a base station or a part of an area covered by a base station, and a TA may include cells included by multiple base stations.
  • a cell can only belong to one TA.
  • Which network slices are supported and the priority of each network slice in the supported network slices are configured by the control device.
  • the network slices supported by different cells belonging to the same TA are the same, and each of the supported network slices The priority order of network slicing is the same in each cell.
  • the base station involved in any embodiment of this application includes at least one cell to which at least one TA supports the network slice information, the following points are explained:
  • the at least one cell here is part or all of the cells included in the base station; this is not limited in any embodiment of the present application;
  • a cell can only be divided into one TA, and at least one TA to which at least one cell belongs includes the TA to which each cell in the at least one cell is divided.
  • At least one cell includes cell 11, cell 12, and cell 13; cell 11 is divided into TA01; cell 12 is divided into TA02; cell 13 is divided into TA02; then at least one TA to which at least one cell belongs includes TA01 and TA02 .
  • the "information of the network slice supported by at least one TA to which at least one cell belongs" may be indicated by the identification of the at least one TA and the information of the network slice supported by each TA in the at least one TA .
  • the specific form of expression is as follows (the name is only indicative, and the embodiment of this application does not limit the name), and the identification of the tracking area can be a tracking area identity (TAI) or a tracking area code (TAC) Said.
  • TAI tracking area identity
  • TAC tracking area code
  • the information of a network slice supported by a TA may include the identification of each network slice in at least one network slice supported by the TA; optionally, the network slice information may also include the priority of each network slice in the at least one network slice. Priority.
  • the network slice identification may be represented by a single network slice selection assistance information (S-NSSAI).
  • the priority of each network slice in at least one network slice supported by one TA indicates the priority of each network slice in this TA.
  • a TAI or TAC can correspond to the information of the supported network slice (the network slice information here includes the identifier of the network slice and the value of the priority of the network slice):
  • each network slice corresponds to a priority value, which indicates the order of the network slice among the three network slices.
  • the smaller the priority value of the network slice the lower the priority of the network slice. Higher. Or conversely, the larger the priority value of the network slice, the higher the priority of the network slice.
  • a TAI or TAC can correspond to the information of the supported network slices (the network slice information here includes the identification of the network slice and the order of the network slices according to priority):
  • network slices from the top to the bottom or from the front to the back in the list indicate that the priority of the network slices is from high to low.
  • network slices from top to bottom or from top to bottom in the list indicate that the priority of network slices is from low to high.
  • the S-NSSAI involved in any of the embodiments of the present application includes at least slice type/service type (SST) information, and optionally may also include slice differentiator (SD).
  • SST information is used to indicate the behavior of the network slicing, such as the characteristics of the network slicing and the service type.
  • the SD information is the supplementary information of the SST. If the SST points to multiple network slices, the SD can assist in corresponding to only one network slice.
  • the identifier of the network slice can be represented by a network slice type, or can also be represented by a network slice type and a service type, or can also be represented by a service type plus tenant information, etc. This is not limited.
  • the specific encoding form of the identifier of the network slice is not limited, and different fields of the interface message carried between different devices can represent different network slices, or can be replaced by abstracted index values, and different index values are respectively Corresponding to different network slices.
  • logo it can also be other logos, which are not limited here.
  • base station 1 determines the identity of cell 1 included in base station 2
  • base station 1 can determine the TA to which cell 1 belongs.
  • cell 1 is any cell included in base station 2.
  • the base station 1 and the base station 2 may send each other the identities of the cells included in their base stations and the identities of the TAs to which each cell belongs to each other in the process of establishing a communication interface. In this way, base station 1 can determine the TA to which cell 1 contained in base station 2 belongs.
  • a terminal device served by base station 1 can receive a broadcast message from base station 2, and then determine the identity of each cell included in base station 2 and the identity of the TA to which each cell belongs.
  • the base station 1 can determine the identity of each cell included in the base station 2 and the identity of the TA to which each cell belongs through the measurement report reported by the terminal device.
  • the base station (for example, the first base station, the second base station, the source base station, or the target base station) involved in each embodiment of the present application may be a next generation NodeB (gNB) or a next generation evolved base station (next generation-evolved NodeB, ng-eNB).
  • gNB provides new radio (NR) user plane functions and control plane functions for terminal equipment
  • ng-eNB provides terminal equipment with evolved universal terrestrial radio access (E-UTRA).
  • E-UTRA evolved universal terrestrial radio access
  • User plane functions and control plane functions are only a name used to indicate a base station supporting a 5G network system and do not have a restrictive meaning.
  • the base station involved in each embodiment may also be a base station (nodeB, NB) in a WCDMA system, or an evolved node (evolved node B, eNB or eNodeB) in an LTE system.
  • the base stations involved in each embodiment may also be relay stations, access points, in-vehicle devices, wearable devices, and network side devices in the network after 5G or network devices in the future evolved PLMN network, and roadside station units ( road site unit, RSU) etc.
  • FIG. 1B shows a schematic diagram of the architecture of a base station with CU-DU separation in a 5G communication system.
  • the 5G communication system includes a next generation core network (next generation core, 5GC) and a radio access network (radio access network, RAN) node connected to the 5GC.
  • the RAN node can be a gNB or an ng-eNB.
  • the RAN node can be connected to the 5GC through the NG-C (next generation control) interface and the NG-U (next generation user) interface.
  • NG-C next generation control
  • NG-U next generation user
  • a gNB or ng-eNB may include a centralized unit (central unit, CU) and one or more distributed units (DU).
  • CU central unit
  • DU distributed units
  • one gNB or ng-eNB as shown in FIG. 1B includes one CU and two DUs.
  • a CU may include a centralized unit control plane (CU-control plane function, CU-CP) and one or more centralized unit user planes (CU-user plane function, CU-UP).
  • CU-control plane function CU-control plane function, CU-CP
  • CU-user plane function CU-user plane function
  • the CU and DU can be connected through the F1 interface
  • the CU-CP and CU-UP can be connected through the E1 interface
  • the CU-CP and DU can be connected through the F1 control plane interface (F1-C) Connection
  • CU-UP and DU can be connected through the F1 user interface (F1-U).
  • the solid line represents control plane transmission
  • the dashed line represents user plane transmission.
  • the function division of CU and DU can be divided according to the protocol stack. Among them, one possible way is to deploy a radio resource control (Radio Resource Control, RRC), a Packet Data Convergence Protocol (PDCP) layer and a Service Data Adaptation Protocol (SDAP) layer in the CU.
  • the radio link layer control protocol (radio link control, RLC), media access control (media access control, MAC), and physical layer (physical layer, PHY) are deployed in the DU.
  • the CU has the processing capabilities of RRC, PDCP and SDAP.
  • DU has the processing capabilities of RLC, MAC, and PHY.
  • the CU includes processing capabilities of RRC, PDCP, RLC, and SDAP, and the DU has processing capabilities of MAC and PHY.
  • the CU includes the processing capabilities of RRC, PDCP, RLC, SDAP, and part of the MAC (for example, adding a MAC header), and the DU has the processing capability of PHY and part of the MAC (for example, scheduling).
  • the names of CU and DU may change, as long as the access network node that can realize the above-mentioned functions can be regarded as CU and DU in this application.
  • the CU-CP has the control plane functions of the CU, for example, the processing capabilities of RRC and the control plane processing capabilities in PDCP.
  • CU-UP has the user plane functions of CU, for example, the processing capabilities of SDAP and the user plane processing capabilities in PDCP.
  • the steps performed by the base stations may be base stations (such as gNB and ng-eNB), CU , Or CU-CP to execute, this application does not limit this.
  • the embodiments of the present application can be applied to other communication systems supporting network slicing, for example, a 5G communication system.
  • the term "system” can be replaced with "network”.
  • the system architecture described in the embodiments of this application is to illustrate the technical solutions of the embodiments of this application more clearly, and does not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that as the network architecture evolves The technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.
  • Fig. 2 is a schematic flowchart of a communication method provided by this application.
  • the equipment involved in the communication method includes: a first base station and a core network device.
  • the embodiment shown in FIG. 2 is applied to a first base station requesting a core network device to obtain information about a network slice supported by a second base station.
  • the method shown in FIG. 2 includes step 201 to step 202.
  • the first base station sends a first message to a core network device.
  • the core network device receives the first message sent by the first base station.
  • the first message is used to request information about the network slice supported by at least one cell included in the second base station, and the network slice information includes the identifier of the network slice; optionally, the network slice information is also Including the priority of network slicing.
  • the first message includes the identity of the second base station.
  • the first message is used to obtain information about the network slices supported by each cell in all the cells included in the second base station.
  • the first message includes the identity of the second base station and the identity of each cell in at least one cell included in the second base station.
  • the first message is used to obtain information about network slices supported by each cell in at least one cell.
  • the first message is used to request to obtain information about a network slice supported by at least one TA to which at least one cell belongs, included in the second base station, and the network slice information includes the identifier of the network slice; optional , The network slice information also includes the priority of the network slice.
  • the first message includes the identity of the second base station.
  • the first message is used to obtain information about network slices supported by at least one TA to which all cells included in the second base station belong.
  • the first message includes the identity of the second base station and the identity of at least one TA to which at least one cell contained in the second base station belongs.
  • the first message is used to obtain information about the network slices supported by one or more TAs, where the one or more TAs are a subset of the TA set of the second base station, and the TA set of the second base station includes At least one TA to which all cells included in the second base station belong respectively.
  • the first base station may learn at least one of the following through the measurement report or pre-configuration information reported by each terminal device: the identity of the second base station, the cell identity included in the second base station, and the cells included in the second base station The TA identification to which they belong.
  • the core network device sends a second message to the first base station.
  • the first base station receives the second message sent by the core network device.
  • the second message includes information of a network slice supported by at least one TA to which at least one cell belongs and included in the second base station.
  • the information of the network slice supported by the at least one TA to which at least one cell belongs here is also the information of the network slice supported by the at least one cell. That is, the information of the network slice supported by the TA to which one cell belongs is equivalent to the information of the network slice supported by the one cell.
  • the second message fed back by the second base station also includes at least one cell to which at least one cell contained in the second base station belongs. Information about network slices supported by TA.
  • the core network device After the core network device receives the first message sent by the first base station, the core network device determines whether the information of the network slice requested by the first base station is stored; if so, the core network device sends the information to the first base station.
  • the origin of the information about the network slice supported by at least one TA to which at least one cell belongs and contained in the second base station stored by the core network device involved here can be but not limited to the following manners: the core network device and the second base station There is a communication interface between the core network equipment and the second base station to obtain the network slice information; the control equipment configures the core network equipment with the network slice information of the base station connected to the core network equipment, including the second base station Information about the network slice.
  • Example 1 In the case where all the cells contained in the second base station belong to TA1 and the received first message includes the identity of the second base station, or the received first message includes the identity of the second base station and TA1,
  • the content that can be included in the second message sent by the core network device is shown in Table 1.
  • the network slices supported by TA1 include network slice #21, network slice #22, network slice #23, and network slice #24.
  • the second message also includes the priority corresponding to each supported network slice, as shown in Table 1.
  • the first level here is a priority higher than the second level, and so on.
  • the second message may also include the identification of TA1. In this way, the first base station can determine, through the second message, the information of the network slice supported by the TA1 to which all cells contained in the second base station belong.
  • Example 2 In the case where the different cells included in the second base station belong to different TAs, for example, refer to Table 2.
  • the different cells included in the second base station belong to different TAs, and the second base station includes 5 cells, namely cell C21 , C22, C23, C24, C25;
  • the TA to which each cell belongs is shown in Table 2.
  • the received first message only includes the identifier of the second base station, see Table 3 for the content that can be included in the second message sent by the core network device, including the TA identifiers TA1, TA2, and TA3, and TA1, TA2, and TA3
  • the second message may further include at least one of the following parameters: the priority of the network slice supported by TA1, the priority of the network slice supported by TA2, and the priority of the network slice supported by TA3.
  • the first base station can determine the information of the network slice supported by at least one TA to which all cells included in the second base station belong through the second message.
  • the second message sent by the core network device may include Refer to Table 4 for the content, including TA identifiers TA2 and TA3, as well as the network slice identifiers supported by TA2 and the network slice identifiers supported by TA3.
  • the second message may further include at least one of the following parameters: the priority of the network slice supported by TA2 and the priority of the network slice supported by TA3. In this way, the first base station can determine the network slice information supported by TA2 and TA3 through the second message.
  • the TA2 supports network slice #25 and network slice #28.
  • the priority of network slice #25 is the first level
  • the priority of network slice #28 is the second. Level, where the first level is a priority higher than the second level, and so on.
  • the priority level setting of each network slice in this application is not limited.
  • Example 3 If the received first message includes the identity of the second base station and the identity of at least one cell contained in the second base station, such as C24 and C25 in the example in Table 2, the second message sent by the core network device Refer to Table 4 for the content that can be included in the second message.
  • the second message includes TA identifiers TA2 and TA3, as well as the identifiers of the network slices supported by TA2 and the identifiers of the network slices supported by TA3. In this way, the first base station can determine the network slice information supported by the TA to which the cells C24 and C25 included in the second base station belong respectively through the second message.
  • the second message may also include information about the network slice supported by at least one TA to which at least one neighboring cell of the cell included in the second base station belongs.
  • each of the at least one neighboring cell is not included in the second base station, and the TA to which each neighboring cell belongs is different from each of the at least one TA to which the at least one cell belongs.
  • the information of the network slice supported by the TA to which one of the neighboring cells belongs includes the identity of the TA to which the neighboring cell belongs and the identity of the network slice supported by the TA, and optionally, the information of each network slice in the network slice supported by the TA. Priority helps to optimize the handover performance between the first base station and the second base station.
  • the embodiments of the present application may be applied to the case where a communication interface is not established between the first base station and the second base station, which is not limited in this application.
  • the first message in this application may be a slice information acquisition request, and the second message may be a slice information response message.
  • This application does not limit the names of the first message and the second message.
  • the function and other messages of the function of the second message belong to the protection scope of this application.
  • the first base station can obtain the network slice information supported by at least one TA to which at least one cell belongs to the second base station by interacting with the core network equipment, which helps to optimize the first base station. Handover performance with the second base station.
  • FIG. 3 is a schematic flowchart of a communication method provided by this application.
  • the devices involved in the communication method include: a first base station, a core network device, and a second base station.
  • the first base station and the second base station respectively have communication interfaces with the core network equipment, so that the first base station and the second base station can respectively communicate with the core network equipment.
  • the embodiment shown in FIG. 3 can be applied to a scenario where there is no communication interface between the first base station and the second base station, and the first base station requests the second base station through the core network device to obtain the information of the network slice supported by the second base station.
  • the method shown in FIG. 3 includes step 301 to step 304.
  • the first base station sends a first message to a core network device.
  • the core network device receives the first message sent by the first base station.
  • the first message is used to request information about the network slice supported by at least one cell included in the second base station, and the network slice information includes the identifier of the network slice; optionally, the network slice information is also Including the priority of network slicing.
  • the first message includes the identity of the second base station.
  • the first message is used to obtain information about the network slices supported by each cell in all the cells included in the second base station.
  • the first message includes the identity of the second base station and the identity of at least one cell.
  • the first message is used to obtain information about network slices supported by each cell in at least one cell.
  • the first message is used to request to obtain information about a network slice supported by at least one TA to which at least one cell belongs, included in the second base station, and the network slice information includes the identifier of the network slice; optional , The network slice information also includes the priority of the network slice.
  • the first message includes the identity of the second base station.
  • the first message is used to obtain information about network slices supported by at least one TA to which all cells included in the second base station belong.
  • the first message includes the identity of the second base station and the identity of at least one TA to which at least one cell contained in the second base station belongs.
  • the first message is used to obtain information about the network slices supported by one or more TAs, where the one or more TAs are a subset of the TA set of the second base station, and the TA set of the second base station includes TA to which all cells included in the second base station belong.
  • the first message in the embodiment of FIG. 3 also includes the identity of the first base station.
  • the first message includes the identity of the first base station and the identity of the second base station, so that the core network device can determine according to the identity of the first base station that the first message was sent by the first base station, and send it to the second base station according to the identity of the second base station. Send the third message.
  • the first base station may learn at least one of the following through the measurement report or pre-configuration information reported by each terminal device: the identity of the second base station, the cell identity included in the second base station, and the cells included in the second base station The TA identification to which they belong.
  • the core network device sends a third message to the second base station.
  • the second base station receives the third message sent by the core network device.
  • the role of the third message is consistent with that of the first message. Specifically, if the first message is used to request to obtain information about a network slice supported by at least one cell included in the second base station, the third message is used to request to obtain information about a network slice supported by at least one cell included in the second base station. If the first message is used to request to obtain the information of the network slice supported by the at least one TA of the at least one cell contained in the second base station, the third message is used to request to obtain the at least one TA of the at least one cell contained in the second base station. Information about the supported network slices.
  • step 301 The information included in the third message and the first message in this step may be the same, and the description in step 301 may be referred to, which will not be repeated here.
  • the second base station sends a fourth message to the core network device.
  • the core network device receives the fourth message sent by the second base station.
  • the second base station After the second base station receives the third message, the second base station obtains the network slice information supported by the TA to which each cell in the at least one cell belongs, and sends a fourth message to the core network device.
  • the fourth message includes information of a network slice supported by at least one TA to which at least one cell belongs and included in the second base station.
  • Example 1 All cells included in the second base station belong to one TA, and the fourth message sent by the second base station may include information about network slices supported by this TA. Optionally, the fourth message may also include the identifier of this TA.
  • Example 2 In the case where the different cells included in the second base station belong to different TAs, if the third message does not include the identification of the TA and does not include the identification of the cell, the fourth message sent by the second base station may include the second base station The identifier of each TA in the set of TAs and the identifier of the network slice supported by each TA.
  • the TA set of the second base station includes the TA to which each cell in all the cells included in the second base station belongs.
  • Example 3 In the case where the different cells included in the second base station belong to different TAs, if the received third message includes the identity of at least one TA in the second base station, the fourth message sent by the second base station may include at least The identification of a TA and the information about the network slices supported by each TA. In this way, the core network device can send the network slice information supported by the TA that the first base station wants to obtain to the first base station, which is more targeted.
  • Example 4 If the received third message includes the identity of at least one cell included in the second base station, the fourth message sent by the second base station includes the identity of at least one TA and information about the network slices supported by each TA.
  • the at least one TA here includes the TA to which each cell in the at least one cell belongs. In this way, the core network device can send to the first base station the information of the network slice supported by the TA that the first base station wants to obtain, which is more targeted.
  • the third message and the fourth message all include the identity of the first base station and the identity of the second base station.
  • the fourth message includes the identity of the first base station and the identity of the second base station, so that the core network device can determine according to the identity of the second base station that the fourth message was sent by the second base station, and send it to the first base station according to the identity of the first base station. Send the second message.
  • the fourth message may also include information about a network slice supported by at least one TA to which at least one neighboring cell of the cell included in the second base station belongs.
  • information about the network slices supported by the at least one TA to which at least one neighboring cell belongs specifically, refer to the information about the network slices supported by the at least one TA to which the at least one neighbor cell belongs included in the second message in the embodiment of FIG. 2 The detailed description will not be repeated here.
  • the core network device sends a second message to the first base station.
  • the first base station receives the second message sent by the core network device.
  • the second message includes information of a network slice supported by at least one TA to which at least one cell belongs and included in the second base station.
  • the information included in the second message and the fourth message may be the same, and reference may be made to the description in step 303, which will not be repeated here. It should be noted that the information of the network slice supported by at least one TA to which at least one cell belongs is included in the second message and the fourth message, which is equivalent to the information of the network slice supported by the at least one cell.
  • the second and fourth messages also include the network supported by at least one TA to which at least one cell included in the second base station belongs. Slice information.
  • the second message also includes at least one of the cells contained in the second base station.
  • the first message is a first uplink radio access network configuration transfer message; the second message is a first downlink radio access network configuration transfer message; and the third message is a second downlink radio access message.
  • Network configuration transfer message; the fourth message is a second uplink radio access network configuration transfer message.
  • the uplink radio access network configuration transfer message refers to the uplink RAN configuration transfer message; the downlink radio access network configuration transfer message refers to the downlink RAN configuration transfer message.
  • the embodiment shown in FIG. 3 does not limit the message names of the first message, the second message, the third message, and the fourth message.
  • the first base station in the case that there is no communication interface between the first base station and the second base station, can obtain at least one cell belonging to at least one cell contained in the second base station by interacting with the core network equipment.
  • the information of the network slice supported by one TA helps to optimize the handover performance between the first base station and the second base station in a scenario where the first base station and the second base station are not connected.
  • FIG. 4 is a schematic flowchart of a communication method provided by this application.
  • the devices involved in the communication method include: a first base station, a core network device, and a second base station.
  • the first base station and the second base station respectively have communication interfaces with the core network equipment, so that the first base station and the second base station can respectively communicate with the core network equipment.
  • the communication method in FIG. 4 can be applied to a scenario where there is no communication interface between the first base station and the second base station, and the first base station needs to switch the PDU session of the terminal device to the second base station.
  • the method shown in FIG. 4 includes steps 401 to 404.
  • the first base station sends a first message to a core network device.
  • the core network device receives the first message sent by the first base station.
  • the first message is used to request to switch N PDU sessions in the terminal equipment from the first base station to the target cell in the second base station, and the first message includes the identity of each PDU session in the N PDU sessions and the identity of the target cell .
  • N is a positive integer.
  • the first message is a handover required (handover required) message.
  • the first message is also used to request information about the network slice supported by at least one cell contained in the second base station, and the network slice information includes the identifier of the network slice; optionally, the network slice The information also includes the priority of the network slicing.
  • the first message includes the identity of the second base station.
  • the first message is used to obtain information about the network slices supported by the TA to which each cell belongs in all the cells included in the second base station.
  • the first message is also used to request to obtain the information of the network slice supported by at least one TA to which at least one cell belongs and included in the second base station.
  • the network slicing in this case, reference may be made to the description of the corresponding case in the embodiment in FIG. 2, which will not be repeated here.
  • the identification of the second base station included in the first message also helps the core network device to determine that the first message is a request to switch N PDU sessions in the terminal device from the first base station to the second base station.
  • the core network device sends a fifth message to the second base station.
  • the second base station receives the fifth message sent by the core network device.
  • the role of the fifth message is consistent with the role of the first message.
  • the fifth message is a handover request (handover request) message
  • the fifth message is used to request to switch N PDU sessions in the terminal device from the first base station to the target cell in the second base station
  • the fifth message includes N The identity of each PDU session in the PDU session and the identity of the target cell.
  • the fifth message also has a function consistent with the first message.
  • the function of the third message is consistent with the function of the first message" introduced in the embodiment shown in FIG. 3. No longer.
  • the fifth message in this step does not include the identity of the second base station.
  • the information included in the fifth message may be consistent with the information in the first message except the identity of the second base station. For details, reference may be made to the description in step 401, which is not repeated here.
  • the second base station sends a sixth message to the core network device.
  • the core network device receives the sixth message sent by the second base station.
  • the sixth message includes information of a network slice supported by at least one TA to which at least one cell belongs and included in the second base station.
  • the sixth message is used to determine the network slice information contained in the fifth message according to the identifier carried in the fifth message.
  • the sixth message corresponds to step
  • the fourth message and the fifth message in 303 are equivalent to the third message in step 303, and will not be repeated here.
  • the sixth message may also include the following example two.
  • Example 2 In the case where the different cells contained in the second base station belong to different TAs, if the fifth message does not include the identification of the TA and does not include the identification of other cells except the target cell, the second base station sends the first
  • the six messages may include the identification of each TA in the TA set of the second base station and the identification of the network slice supported by each TA.
  • the TA set of the second base station includes the TA to which each cell in all the cells included in the second base station belongs.
  • the network slice information supported by the TA in this embodiment can refer to the description in FIG. 1A, or refer to the example in FIG. 2, which will not be repeated here.
  • the sixth message may further include information about a network slice supported by at least one TA to which at least one neighboring cell of the cell included in the second base station belongs.
  • information about the network slices supported by the at least one TA to which at least one neighboring cell belongs please refer to the detailed description of the information about the network slices supported by the at least one TA of the at least one neighboring cell included in the second message in the embodiment of FIG. 2 , I won’t repeat it here.
  • the sixth message is a response message to the fifth message.
  • the sixth message is a handover request acknowledgement message; if the second base station cannot provide services for any of the requested PDU sessions, The sixth message is a handover failure message.
  • the core network device sends a second message to the first base station.
  • the first base station receives the second message sent by the core network device.
  • the second message includes information of a network slice supported by at least one TA to which at least one cell belongs and included in the second base station.
  • the network slice information included in the second message and the sixth message are consistent, and the description in step 403 may be referred to, which is not repeated here.
  • the information of the network slice supported by at least one TA to which at least one cell belongs in the second message and the sixth message is equivalent to the information of the network slice supported by the at least one cell.
  • the fifth message is used to request the information of the network slice supported by at least one cell contained in the second base station, the second message and the sixth message also include the network supported by at least one TA to which at least one cell contained in the second base station belongs Slice information.
  • the sixth message includes information about a network slice supported by at least one TA to which at least one neighboring cell of the cell contained in the second base station belongs
  • the second message also includes at least one of the cells contained in the second base station. Information about network slices supported by at least one TA to which the neighboring cell belongs.
  • the second message is a handover command message; if the second base station cannot provide services for any of the requested PDUs The session provides service, and the second message is a handover preparation failure message.
  • the embodiment shown in FIG. 4 does not limit the message names of the first message, the second message, the third message, and the fourth message.
  • the first base station in the case that there is no communication interface between the first base station and the second base station, can obtain at least one cell belonging to at least one cell contained in the second base station by interacting with the core network equipment.
  • Information of a network slice supported by a TA so that when the first base station needs to switch the PDU session of the terminal device, the target cell can be selected by combining the information of the network slice supported by the TA of the cell contained in the second base station , Improve the probability of handover success.
  • FIG. 5 is a schematic flowchart of a communication method provided by this application.
  • the devices involved in the communication method include: a first base station and a second base station, where the first base station and the second base station can directly communicate.
  • the embodiment shown in FIG. 5 is applied to the first base station to notify the second base station of the information of the network slices it supports.
  • the method shown in FIG. 5 includes step 501 to step 502.
  • the first base station generates a first message.
  • the first base station sends a first message to the second base station.
  • the second base station receives the first message sent by the first base station.
  • the embodiment shown in FIG. 5 can be applied to a scenario where the first base station and the second base station establish a communication interface.
  • the first message is an Xn setup request (Xn setup request) message or can be an Xn setup response (Xn setup response) message. .
  • the embodiment shown in FIG. 5 can be applied to a scenario where the first base station and the second base station have established a communication interface.
  • the first message is a next-generation radio access network node configuration update (NG-RAN node configuration update) message
  • NG-RAN node configuration update next-generation radio access network node configuration update
  • it may be a NG-RAN node configuration update acknowledgement message for the next generation radio access network node.
  • the embodiment shown in FIG. 5 does not limit the message name of the first message.
  • the first message sent by the first base station may include information about at least one first network slice supported by the first base station, and the information about the first network slice includes The identifier of the first network slice and the priority of the first network slice.
  • the first message may include the identity of the TA to which it belongs.
  • the first message sent by the first base station may include the identification of at least one TA to which at least one cell included in the first base station belongs and at least one supported by the TA
  • the information of the second network slice, and the information of the second network slice includes the identifier of the second network slice and the priority of the second network slice.
  • at least one TA is included in the TA set of the first base station, and the TA set of the first base station includes the TA to which each cell of all the cells included in the first base station belongs.
  • the second base station may also carry network slice information in the second message sent to the first base station.
  • network slice information carried in the second message reference can be made to the exemplary description of the first message in the embodiment of FIG.
  • the information of the network slice supported by the at least one TA to which at least one cell belongs is included in the first message and the second message is equivalent to the information of the network slice supported by the at least one cell.
  • the first base station when there is a communication interface between the first base station and the second base station, can send to the second base station the network slice supported by the first base station and each of the supported network slices.
  • the priority of network slicing helps to optimize the handover performance between the first base station and the second base station.
  • FIG. 6 is a schematic flowchart of a communication method provided by this application.
  • the devices involved in the communication method include: a first base station, a core network device, and a second base station.
  • the first base station and the second base station respectively have communication interfaces with the core network equipment, so that the first base station and the second base station can respectively communicate with the core network equipment.
  • the embodiment shown in FIG. 6 is applied to the first base station to notify the second base station of the information of the network slice supported by it through the core network device.
  • the method shown in FIG. 6 includes steps 601 to 603.
  • the first base station generates a first message.
  • the first base station sends a first message to the core network device.
  • the core network device receives the first message sent by the first base station.
  • the first message sent by the first base station in this application is exemplified:
  • the first message sent by the first base station includes information about at least one first network slice supported by the first base station.
  • the information of the first network slice includes the identifier of the first network slice; optionally, the information of the first network slice also includes the priority of the first network slice.
  • the first message sent by the first base station includes the identification of the TA to which each cell in the at least one cell included in the first base station belongs and at least the TA supported Information about a second network slice.
  • the information of the second network slice includes the identifier of the second network slice; optionally, the information of the second network slice further includes the priority of the second network slice.
  • the first message also includes the identity of the first base station and the identity of the second base station.
  • the core network device may determine according to the identity of the first base station that the first message is sent by the first base station; and the core network device may send the second message to the second base station according to the identity of the second base station.
  • the first base station may learn at least one of the following through the measurement report or pre-configuration information reported by each terminal device: the identity of the second base station, the cell identity included in the second base station, and the cells included in the second base station The TA identification to which they belong.
  • the core network device sends a second message to the second base station.
  • the second base station receives the second message sent by the core network device.
  • the core network device is used to provide a forwarding function.
  • the second message and the network slice information included in the first message are consistent.
  • the description in step 601 may be referred to, which is not repeated here.
  • the second message further includes the identity of the first base station and the identity of the second base station, so that the second base station determines that the network slice information contained in the second message belongs to the first base station.
  • the first message is an uplink radio access network configuration transfer message; the second message is a downlink radio access network configuration transfer message.
  • the uplink radio access network configuration transfer message refers to the uplink RAN configuration transfer message;
  • the downlink radio access network configuration transfer message refers to the downlink RAN configuration transfer message.
  • the second base station may also send the third message to the core network device, so that the core network device sends the fourth message to the first base station.
  • the network slice information carried in the fourth message refer to the exemplary description of the first message in the embodiment of FIG. 6, and the network slice information carried in the third message may refer to the exemplary description of the second message in the embodiment of FIG. 6. Explanation, I won't repeat it here.
  • the first message, the second message, the third message, and the fourth message include the information of the network slice supported by at least one TA to which at least one cell belongs is equivalent to the information of the network slice supported by the at least one cell .
  • the first base station may send the network slice supported by the first base station to the second base station through the core network device, and optionally The priority of each network slice in the supported network slices can also be sent, which helps to optimize the handover performance between the first base station and the second base station in a scenario where the first base station and the second base station are not connected.
  • FIG. 7 is a schematic flowchart of a communication method provided by this application.
  • the equipment involved in this communication method includes: a source base station and a target base station.
  • the source base station and the target base station can directly communicate, and the communication method in FIG. 7 is applied to a scenario where the source base station needs to switch the PDU session of the terminal device to the target base station.
  • the method shown in FIG. 7 includes step 701 to step 702.
  • the source base station sends a first message to the target base station.
  • the target base station receives the first message sent by the source base station.
  • the first message is also used to request that the N PDU sessions in the terminal device be switched from the source base station to the target cell in the target base station, and the first message includes the identifier of each PDU session in the N PDU sessions and the target cell
  • the identifier of, N is a positive integer.
  • the first message is a handover request (handover request) message.
  • the target base station sends a second message to the source base station.
  • the source base station receives the second message sent by the target base station.
  • the second message is used to indicate a handover response, and the second message includes indication information.
  • the indication information is used to indicate that the reason for the failure of the handover of M PDU sessions in the terminal device is due to insufficient resources in the target cell.
  • the network slice corresponding to the M PDU sessions has a lower priority in the TA to which the target cell belongs, which results in that the network slice has no available resources.
  • M is a positive integer less than or equal to N. In other words, M PDU sessions are part or all of N PDU sessions.
  • the second message is a handover request acknowledgement message; if the target base station cannot provide services for any of the requested PDU sessions, then The second message is a handover preparation failure (handover preparation failure) message.
  • the indication information may include at least one of the identifiers of M PDU sessions and a cause value, and the cause value is used to indicate the network corresponding to the PDU session when the target cell has insufficient resources.
  • the priority of the slice in the TA to which the target cell belongs is low, resulting in that the network slice has no available resources.
  • Example 1 If the target base station cannot provide services for all the sessions requested, and the failure of each PDU session switching is due to insufficient resources in the target cell, the network slice corresponding to each PDU session is in the TA to which the target cell belongs If the priority in is low and the network slice has no available resources, the indication information may only include the reason value to indicate the reason why each requested PUD session is rejected.
  • Example 2 If the target base station cannot provide services for the requested part of the session, and the reason for the failure of each PDU session switching in this part of the PDU session is due to insufficient resources in the target cell, the network slice corresponding to each PDU session is If the priority in the TA to which the target cell belongs is low and the network slice has no available resources, the indication information may be the identifier of each PDU session in this part of the PDU session and a cause value; or the indication information may be each part of the PDU session. The identifier of the PDU session and the reason value corresponding to each PDU session. This indicates the reason why the requested partial PDU session was rejected.
  • the target base station sends a fifth message to the control device.
  • control device receives the fifth message sent by the target base station.
  • Step 703 is optional.
  • the fifth message includes the identification and indication information of the target cell.
  • the target base station can notify the control device that when the resources of the target cell are insufficient, the lower priority of the network slice of the PDU session to be handed over in the target cell affects the access of the PDU session.
  • step 702 if the indication information does not carry the identifier of each PDU session, add the identifier of each PDU session to the fifth message, so that the control device can determine according to the identifier of the PDU session The corresponding network slice.
  • the control device sends a sixth message to the target base station.
  • the target base station receives the sixth message sent by the control device.
  • Step 704 is optional.
  • the sixth message includes information about the network slice reconfigured for the TA to which the target cell belongs, and the information about the network slice includes the identifier of the network slice supported by the TA to which the target cell belongs and the priority of each network slice in the supported network slice. At least one of them.
  • the control device can support the TA to which the target cell belongs. At least one of the identifier of the network slice and the priority of the network slice is adjusted to meet the PDU session switching requirement.
  • the source base station may send a seventh message to the control device, where the seventh message includes the identification and indication information of the target cell.
  • the source base station is used to notify the control device that the access of the PDU session is affected by the low priority of the network slice.
  • control device may perform at least one of step 704 and step 705:
  • the control device sends an eighth message to the source base station.
  • the eighth message includes information about the network slice reconfigured for the TA to which the target cell belongs.
  • the information about the network slice includes the identification of the network slice supported by the TA to which the target cell belongs and the priority of each network slice in the supported network slice. at least one. In this way, the control device can also notify the source base station of the information about the network slice reconfigured for the TA to which the target cell belongs, so that the source base station can refer to it.
  • the target base station when the source base station and the target base station can communicate directly, if the source base station requests to switch the PDU session of the terminal device to the target cell in the target base station, the target base station can be used to indicate the handover
  • the response message includes indication information to indicate that when the resources of the target cell are insufficient, the priority of the network slice corresponding to the failed PDU session in the TA to which the target cell belongs is lower, and the network slice has no available resources.
  • FIG. 8 is a schematic flowchart of a communication method provided by this application.
  • the devices involved in the communication method include: a source base station, a core network device, and a target base station. Among them, there are communication interfaces between the source base station and the target base station and the core network equipment respectively, so that the source base station and the target base station can respectively communicate with the core network equipment.
  • the communication method of FIG. 8 can be applied to a scenario where there is no communication interface between the source base station and the target base station, and the source base station needs to switch the PDU session of the terminal device to the target base station.
  • the method shown in FIG. 8 includes step 801 to step 804.
  • the source base station sends a first message to a core network device.
  • the core network device receives the first message sent by the source base station.
  • the first message is used to request to switch N PDU sessions in the terminal equipment from the source base station to the target cell in the target base station, and the first message includes the identity of each PDU session in the N PDU sessions and the identity of the target cell , N is a positive integer.
  • the first message is a handover required (handover required) message.
  • the first message also includes the identifier of the target base station, so that the core network device determines that the first message is used to request to switch the N PDU sessions of the terminal device from the source base station to the target base station.
  • the core network device sends a third message to the target base station.
  • the target base station receives the third message sent by the core network device.
  • the third message is used to request to switch N PDU sessions of the terminal device from the source base station to the target cell in the target base station, and the third message includes the identity of each PDU session in the N PDU sessions and the identity of the target cell .
  • the third message is a handover request (handover request) message.
  • the core network device receives the fourth message sent by the target base station.
  • the target base station determines a fourth message, and the fourth message is used to indicate a message for a handover response.
  • the fourth message includes indication information.
  • the indication information is used to indicate that the M PDU session switching failure in the terminal device is due to insufficient resources in the target cell.
  • the network slice corresponding to the PDU session is in the TA to which the target cell belongs.
  • the network slice has no available resources due to the low priority.
  • M is a positive integer less than or equal to N. In other words, M PDU sessions are part or all of N PDU sessions.
  • the fourth message is a handover request acknowledgement message; if the target base station cannot provide services for any of the requested PDU sessions, then The fourth message is a handover failure message.
  • the indication information may include the identities and cause values of M PDU sessions, and the cause value is used to indicate that the network slice corresponding to the PDU session is in the target cell when the resources of the target cell are insufficient.
  • the priority in the TA to which it belongs is low, resulting in no available resources for the network slice.
  • the core network device sends a second message to the source base station.
  • the source base station receives the second message sent by the core network device.
  • the second message includes indication information.
  • the embodiment shown in FIG. 8 can be applied to a scenario where there is no communication interface between the source base station and the target base station, and the source base station needs to switch the PDU session of the terminal device to the target base station, which is not limited in this application.
  • the second message when the target base station can provide services for all or part of the requested PDU session, the second message is a handover command message; when the target base station cannot provide services for any of the requested PDU sessions When serving, the second message is a handover preparation failure (handover preparation failure) message.
  • handover preparation failure handover preparation failure
  • the target base station sends a fifth message to the control device.
  • control device receives the fifth message sent by the target base station.
  • Step 805 is optional.
  • the control device sends a sixth message to the target base station.
  • the target base station receives the sixth message sent by the control device.
  • Step 806 is optional.
  • the source base station may send a seventh message to the control device, where the seventh message includes the identification and indication information of the target cell.
  • the source base station is used to notify the control device that the access of the PDU session is affected by the fact that the priority of the network slice is low priority.
  • steps 805 to 806 reference may be made to steps 703 and 704 in the embodiment shown in FIG. 7, which will not be repeated here.
  • the target base station in the case that there is no communication interface between the source base station and the target base station, if the source base station requests to switch the PDU session of the terminal device to the target cell in the target base station, the target base station can be used for
  • the message indicating the handover response includes indication information.
  • the core network device indicates to the source base station that in the case of insufficient resources in the target cell, the priority of the network slice corresponding to the PDU session for which the handover fails is lower in the TA to which the target cell belongs. As a result, the network slice has no available resources. In this way, when the source base station needs to switch the PDU session of the terminal device, the source base station can determine whether to switch based on the previous indication information forwarded by the core network device, which improves the probability of a successful switch.
  • the base station, core network equipment, and control equipment include at least one of a hardware structure and a software module corresponding to each function.
  • the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art can use different devices for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the technical solutions of the embodiments of the present application.
  • the embodiments of the present application can divide the base station, core network equipment, and control equipment into functional modules or functional units based on the above device examples.
  • each functional module or functional unit can be divided corresponding to each function, or two or more
  • the functions are integrated in a processing module or processing unit.
  • the above-mentioned integrated modules or units can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules or units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • the base station 900 is used to implement the method embodiments in FIGS. 2 to 8.
  • the base station 900 includes a sending module 901 and a receiving module 902.
  • the base station 900 is the first base station, and includes:
  • the sending module 901 is configured to send a first message to a core network device, where the first message is used to request information about network slices supported by at least one cell included in the second base station, or the first message is used to request Acquire information about the network slices supported by the at least one tracking area to which at least one cell belongs, included in the second base station, where the network slice information includes the identifier of the network slice; optionally, the network slice information further includes all The priority of the network slicing;
  • the receiving module 902 is configured to receive a second message sent by the core network device, where the second message includes information about a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the base station 900 is used to implement the steps performed by the first base station in the embodiments of FIG. 2, FIG. 3, and FIG. 4.
  • the base station 900 is used to implement the steps performed by the first base station in the embodiments of FIG. 2, FIG. 3, and FIG. 4.
  • the base station 900 in FIG. 9 For the specific implementation manners and corresponding beneficial effects of the functional blocks included in the base station 900 in FIG. 9, reference may be made to the specific introduction of the foregoing embodiments in FIG. 2, FIG. 3, and FIG. 4, which will not be repeated here.
  • the base station 900 is a second base station, and includes:
  • the receiving module 902 is configured to receive a first message sent by a core network device, where the first message is used to request information about network slices supported by at least one cell included in the second base station, or the first message is used to Request to obtain the information of the network slice supported by the at least one tracking area to which at least one cell belongs included in the second base station, where the information of the network slice includes the identifier of the network slice; optionally, the information of the network slice further includes The priority of the network slice;
  • the sending module 901 is configured to send a second message to the core network device, where the second message includes information about a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the base station 900 is used to implement the steps performed by the second base station in the embodiments of FIG. 3 and FIG. 4.
  • the base station 900 is used to implement the steps performed by the second base station in the embodiments of FIG. 3 and FIG. 4.
  • the base station 900 in FIG. 9 For the specific implementation manners and corresponding beneficial effects of the functional blocks included in the base station 900 in FIG. 9, reference may be made to the specific introduction of the foregoing embodiments in FIG. 3 and FIG. 4, which will not be repeated here.
  • the base station 900 is the first base station.
  • the base station 900 further includes a generating module 903 (not shown in FIG. 9). include:
  • the sending module 901 is used to send the first message
  • the first message includes information about at least one first network slice supported by the first base station, and the information about the first network slice includes an identifier of the first network slice; optionally, the first network slice
  • the network slice information also includes the priority of the first network slice; or, the first message includes the identification of at least one tracking area to which at least one cell included in the first base station belongs and at least one tracking area supported by the tracking area.
  • Information about a second network slice where the information about the second network slice includes the identifier of the second network slice; optionally, the information about the second network slice further includes the priority of the second network slice;
  • the base station 900 is used to implement the steps performed by the first base station in the embodiments of FIG. 5 and FIG. 6.
  • the base station 900 is used to implement the steps performed by the first base station in the embodiments of FIG. 5 and FIG. 6.
  • the base station 900 in FIG. 9 For the specific implementation manners and corresponding beneficial effects of the functional blocks included in the base station 900 in FIG. 9, reference may be made to the specific introduction of the foregoing embodiments in FIG. 5 and FIG. 6, which will not be repeated here.
  • the base station 900 is a second base station, and includes:
  • the receiving module 902 is configured to receive a first message, where the first message includes information about at least one first network slice supported by the first base station, and the information about the first network slice includes an identifier of the first network slice; Optionally, the information of the first network slice further includes the priority of the first network slice; or, the first message includes the identification of at least one tracking area to which at least one cell included in the first base station belongs and The information of at least one second network slice supported by the tracking area, the information of the second network slice includes the identifier of the second network slice; optionally, the information of the second network slice further includes the first network slice 2. Priority of network slicing.
  • the base station 900 is used to implement the steps performed by the second base station in the embodiments of FIG. 5 and FIG. 6.
  • the base station 900 is used to implement the steps performed by the second base station in the embodiments of FIG. 5 and FIG. 6.
  • the base station 900 in FIG. 9 For the specific implementation manners and corresponding beneficial effects of the functional blocks included in the base station 900 in FIG. 9, reference may be made to the specific introduction of the foregoing embodiments in FIG. 5 and FIG. 6, which will not be repeated here.
  • the base station 900 being the source base station includes:
  • the sending module 901 is configured to send a first message, the first message is used to request that N PDU sessions of the terminal device be handed over from the source base station to the target cell in the target base station, and the first message includes the N The identifier of each PDU session in each PDU session and the identifier of the target cell;
  • the receiving module 902 is configured to receive a second message used to indicate a handover response, where the second message includes indication information, and the indication information is used to indicate that when the resources of the target cell are insufficient, the M terminals in the terminal device
  • the reason for the failure of PDU session switching is that the network slices corresponding to the M PDU sessions have low priority in the tracking area to which the target cell belongs, and the network slices have no available resources.
  • N is a positive integer
  • M is less than Or a positive integer equal to N.
  • the base station 900 is used to implement the steps performed by the source base station in the embodiments of FIG. 7 and FIG. 8.
  • the base station 900 of FIG. 9 For the specific implementation manners and corresponding beneficial effects of the functional blocks included in the base station 900 of FIG. 9, reference may be made to the specific introduction of the foregoing embodiments of FIG. 7 and FIG. 8, which will not be repeated here.
  • the base station 900 is a target base station, including:
  • the receiving module 902 is configured to receive a first message, the first message is used to request to switch N PDU sessions in the terminal device from the source base station to the target cell in the target base station, and the first message includes the The identifier of each PDU session in the N PDU sessions, the identifier of the network slice corresponding to each PDU session, and the identifier of the target cell;
  • the sending module 901 is configured to send a second message for indicating a handover response, where the second message includes indication information, and the indication information is used to indicate that when the resources of the target cell are insufficient, M of the terminal devices
  • the reason for the failure of PDU session switching is that the network slices corresponding to the M PDU sessions have low priority in the tracking area to which the target cell belongs, and the network slices have no available resources.
  • N is a positive integer, and M is less than Or a positive integer equal to N.
  • the base station 900 is used to implement the steps performed by the target base station in the embodiments of FIG. 7 and FIG. 8.
  • the base station 900 of FIG. 9 For the specific implementation manners and corresponding beneficial effects of the functional blocks included in the base station 900 of FIG. 9, reference may be made to the specific introduction of the foregoing embodiments of FIG. 7 and FIG. 8, which will not be repeated here.
  • the receiving module 902 may be a receiver or a receiving circuit
  • the sending module 901 may be a transmitter or a sending circuit.
  • the receiving module 902 and the sending module 901 may also be communication interfaces of the base station.
  • the base station 900 in the embodiment shown in FIG. 9 may be implemented by the base station 1000 shown in FIG. 10. As shown in FIG. 10, a schematic structural diagram of another base station is provided for an embodiment of this application.
  • the base station 1000 shown in FIG. 10 includes a processor 1001 and a transceiver 1002.
  • the transceiver 1002 is used to support information transmission between the base station 1000 and other base stations and core network devices involved in the embodiments of FIGS. 2 to 8.
  • the processor 1001 is used to control and manage the actions of the base station.
  • the transceiver 1402 is used to implement messages received and sent in the embodiments shown in FIGS. 2 to 8.
  • the processor 1401 is configured to support the transceiver 802 to perform the foregoing steps, and the processor 1401 is configured to implement the step of generating the first message in the embodiment of FIG. 5 or FIG. 6.
  • the processor 1001 and the transceiver 1002 are communicatively connected, for example, connected via a bus 1004.
  • the bus 1004 may be a PCI bus or an EISA bus.
  • the bus 1004 can be divided into an address bus, a data bus, and a control bus. For ease of representation, only one thick line is used to represent in FIG. 10, but it does not mean that there is only one bus or one type of bus.
  • the base station 1000 may further include a memory 1003.
  • the memory 1003 is used to store program codes and data for the base station 1000 to execute, and the processor 1001 is used to execute the application code stored in the memory 1003 to implement the actions of the base station provided by any of the embodiments shown in FIGS. 2 to 8.
  • the base station may include one or more processors, and the structure of the base station 1000 does not constitute a limitation to the embodiment of the present application.
  • the processor 1001 may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (ASIC), a field programmable gate array Field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination for realizing computing functions, for example, including a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the transceiver 1004 may be a communication interface or a transceiver circuit, etc., where the transceiver is a general term. In a specific implementation, the transceiver may include multiple interfaces.
  • the memory 1003 may include a volatile memory (volatile memory), such as random access memory (random access memory, RAM); the memory 1003 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (read-only memory). Only memory (ROM), flash memory (flash memory), hard disk drive (HDD), or solid-state drive (SSD); the memory 1003 may also include a combination of the foregoing types of memories.
  • volatile memory such as random access memory (random access memory, RAM
  • non-volatile memory such as a read-only memory (read-only memory).
  • SSD solid-state drive
  • a readable storage medium is also provided, which can be used to store the computer software instructions used by the base station in the embodiment shown in FIG. 2 to FIG. Any possible implementation is implemented.
  • the storage medium includes but is not limited to flash memory, hard disk, and solid state hard disk.
  • An embodiment of the present application also provides a computer program product.
  • the computer product When the computer product is run by a computing device, it can execute the communication method designed for the base station in the foregoing embodiment.
  • FIG. 11 is a schematic structural diagram of a core network device according to an embodiment of the present application.
  • the core network device 1100 is used to implement the method embodiments in FIG. 2, FIG. 3, FIG. 4, FIG. 6, and FIG. 8.
  • the core network device 1100 includes a receiving module 1101 and a sending module 1102.
  • the core network device 1100 includes:
  • the receiving module 1101 is configured to receive a first message from a first base station, where the first message is used to request information about network slices supported by at least one cell included in the second base station, or the first message is used to Request to obtain the information of the network slice supported by the at least one tracking area to which at least one cell belongs included in the second base station, where the information of the network slice includes the identifier of the network slice; optionally, the information of the network slice further includes The priority of the network slice;
  • the sending module 1102 is configured to send a second message to the first base station, where the second message includes information about a network slice supported by at least one tracking area to which at least one cell belongs and included in the second base station.
  • the core network device 1100 is used to implement the steps performed by the core network device in the embodiments of FIG. 2, FIG. 3, and FIG. 4.
  • the core network device 1100 is used to implement the steps performed by the core network device in the embodiments of FIG. 2, FIG. 3, and FIG. 4.
  • the core network device 1100 in FIG. 11 refers to the specific introduction of the foregoing embodiments in FIG. 2, FIG. 3, and FIG. 4, which will not be repeated here.
  • the core network device 1100 includes:
  • the receiving module 1101 is configured to receive a first message sent by a first base station; the first message includes information about at least one first network slice supported by the first base station, and the information about the first network slice includes the first network slice.
  • the information also includes the priority of the second network slice;
  • the sending module 1102 is configured to send a second message to a second base station; the second message includes information about at least one first network slice supported by the first base station; or, the second message includes the first base station The included identification of at least one tracking area to which at least one cell belongs and information of at least one second network slice supported by the tracking area.
  • the first message and the second message include the identity of the first base station and the identity of the second base station.
  • the core network device 1100 is used to implement the steps performed by the core network device in the embodiment of FIG. 6.
  • the core network device 1100 is used to implement the steps performed by the core network device in the embodiment of FIG. 6.
  • the core network device 1100 of FIG. 11 Reference may be made to the specific introduction of the foregoing embodiment of FIG. 6, which will not be repeated here.
  • the core network device 1100 includes:
  • the receiving module 1101 is configured to receive a first message sent by a source base station; the first message is used to request to switch N PDU sessions in a terminal device from the source base station to a target cell in the target base station, the first message Including the identifier of each PDU session in N PDU sessions and the identifier of the target cell, where N is a positive integer.
  • the first message also includes the identification of the target base station.
  • the sending module 1102 is configured to send a third message to the target base station; the third message is used to request that the N PDU sessions of the terminal device be switched from the source base station to the target cell in the target base station, and the third message includes N PDU sessions The identity of each PDU session in the PDU and the identity of the target cell.
  • the receiving module 1101 is further configured to receive a fourth message sent by the target base station; the fourth message is used to indicate a handover response message.
  • the fourth message includes indication information, the indication information is used to indicate that in the case of insufficient resources in the target cell, the reason for the failure of the switching of M PDU sessions in the terminal device is because the network slice corresponding to the PDU session belongs to the target cell
  • the network slice has no available resources due to the low priority in the tracking area of, N is a positive integer, and M is a positive integer less than or equal to N.
  • the sending module 1102 is also used to send a second message to the source base station.
  • the second message includes indication information.
  • the core network device 1100 is used to implement the steps performed by the core network device in the embodiment of FIG. 8.
  • the core network device 1100 is used to implement the steps performed by the core network device in the embodiment of FIG. 8.
  • the core network device 1100 of FIG. 11 reference may be made to the specific introduction of the foregoing embodiment of FIG. 8, which will not be repeated here.
  • the receiving module 1101 may be a receiver or a receiving circuit
  • the sending module 1102 may be a transmitter or a sending circuit.
  • the receiving module 1101 and the sending module 1102 may also be communication interfaces of the core network device.
  • the core network device 1100 shown in FIG. 11 may be implemented by the core network device 1200 shown in FIG. 12. As shown in FIG. 12, a schematic structural diagram of another core network device is provided for an embodiment of this application.
  • the core network device 1200 shown in FIG. 12 includes a processor 1201 and a transceiver 1202.
  • the transceiver 1202 is used to support information transmission between the core network device 1200 and the base station involved in the foregoing embodiment, and the processor 1201 is used to control and manage the actions of the core network device 1200.
  • the transceiver 1402 is used to implement receiving in the embodiments shown in FIG. 2, FIG. 3, FIG. 4, FIG. 6, and FIG. Messages and send messages.
  • the processor 1401 is configured to support the transceiver 802 to perform the foregoing steps.
  • the processor 1201 and the transceiver 1202 are communicatively connected, for example, connected via a bus.
  • the core network device 1200 may further include a memory 1203.
  • the memory 1203 is used to store program codes and data for the core network device 1200 to execute, and the processor 1201 is used to execute the application program codes stored in the memory 1203 to implement the core network device provided by any of the embodiments shown in FIGS. 2 to 6 Actions.
  • the core network device may include one or more processors, and the structure of the core network device 1200 does not constitute a limitation to the embodiment of the present application.
  • the processor 1201 may be a CPU, an NP, a hardware chip, or any combination thereof.
  • the above hardware chip can be ASIC, PLD or a combination thereof.
  • the above PLD can be CPLD, FPGA, GAL or any combination thereof.
  • the memory 1203 may include a volatile memory, such as RAM; the memory 1203 may also include a non-volatile memory, such as ROM, flash memory, a hard disk, or a solid state hard disk; the memory 1203 may also include a combination of the foregoing types of memories.
  • a volatile memory such as RAM
  • the memory 1203 may also include a non-volatile memory, such as ROM, flash memory, a hard disk, or a solid state hard disk
  • the memory 1203 may also include a combination of the foregoing types of memories.
  • An embodiment of the present application also provides a readable storage medium, which can be used to store computer software instructions used by the core network device in the embodiments shown in FIG. 2, FIG. 3, FIG. 4, FIG. 6, and FIG. Any possible implementation manner of the embodiments shown in FIG. 2, FIG. 3, FIG. 4, FIG. 6, and FIG. 8 are realized.
  • the storage medium includes but is not limited to flash memory, hard disk, and solid state hard disk.
  • a computer program product is also provided.
  • the computer product When the computer product is run by a computing device, it can execute the communication method designed for the core network device in the foregoing embodiment.
  • FIG. 13 is a schematic structural diagram of a control device provided by an embodiment of the present application.
  • the control device 1300 is used to implement the method embodiments in FIGS. 7 and 8.
  • the control device 1300 includes a receiving module 1301 and a sending module 1302.
  • the receiving module 1301 is configured to receive a first message sent by a first base station, where the first message includes the identification and indication information of the target cell contained in the second base station, and the indication information is used to indicate insufficient resources in the target cell
  • the reason for the failure of the switching of the M PDU sessions is that the network slices corresponding to the M PDU sessions have a low priority in the tracking area to which the target cell belongs. ; M is a positive integer.
  • the sending module 1302 is configured to send a second message to the second base station, where the second message includes information about a network slice reconfigured for the tracking area to which the target cell belongs, and the network slice information includes the target The identification of the network slice supported by the tracking area to which the cell belongs and the priority of each network slice in the supported network slices.
  • the first base station and the second base station may be the same base station or different base stations.
  • control device 1300 is used to implement the steps executed by the control device in the embodiments of FIG. 7 and FIG. 8.
  • the control device 1300 is used to implement the steps executed by the control device in the embodiments of FIG. 7 and FIG. 8.
  • the specific implementation manners and corresponding beneficial effects of the functional blocks included in the control device in FIG. 13 reference may be made to the specific introduction of the embodiments in FIG. 7 and FIG. 8, which will not be repeated here.
  • the receiving module 1301 may be a receiver or a receiving circuit
  • the sending module 1302 may be a transmitter or a sending circuit.
  • the receiving module 1301 and the sending module 1302 may also be communication interfaces of the control device.
  • the control device 1300 shown in FIG. 13 may be implemented by the control device 1400 shown in FIG. 14. As shown in FIG. 14, an embodiment of the present application provides a schematic structural diagram of another control device.
  • the control device 1400 shown in FIG. 14 includes a processor 1401 and a transceiver 1402.
  • the transceiver 1402 is used to support information transmission between the control device 1400 and the base station involved in the foregoing embodiment, and the processor 1401 is used to control and manage the actions of the control device 1400.
  • the transceiver 1402 is used to implement the message received and the message sent in the embodiment shown in FIG.
  • the processor 1401 is configured to support the transceiver 802 to perform the foregoing steps.
  • the processor 1401 and the transceiver 1402 are communicatively connected, for example, connected via a bus.
  • the control device 1400 may further include a memory 1403.
  • the memory 1403 is used to store program codes and data for the control device 1400 to execute, and the processor 1401 is used to execute the application program codes stored in the memory 1403 to implement the actions of the control device provided by any of the embodiments shown in FIG. 7 and FIG. 8 .
  • control device may include one or more processors, and the structure of the control device 1400 does not constitute a limitation to the embodiments of the present application.
  • the processor 1401 may be a CPU, an NP, a hardware chip, or any combination thereof.
  • the above hardware chip can be ASIC, PLD or a combination thereof.
  • the above PLD can be CPLD, FPGA, GAL or any combination thereof.
  • the memory 1403 may include a volatile memory, such as RAM; the memory 1403 may also include a non-volatile memory, such as ROM, flash memory, a hard disk, or a solid state disk; the memory 1403 may also include a combination of the foregoing types of memories.
  • a volatile memory such as RAM
  • the memory 1403 may also include a non-volatile memory, such as ROM, flash memory, a hard disk, or a solid state disk
  • the memory 1403 may also include a combination of the foregoing types of memories.
  • a readable storage medium is also provided, which can be used to store the computer software instructions used by the control device in the embodiment shown in FIG. 7 and FIG. 8, so that the embodiment shown in FIG. Any possible implementation of is implemented.
  • the storage medium includes but is not limited to flash memory, hard disk, and solid state hard disk.
  • An embodiment of the present application also provides a computer program product.
  • the computer product When the computer product is run by a computing device, it can execute the communication method designed for the control device in the foregoing embodiment.
  • a and/or B refers to one of the following situations: A, B, A and B.
  • At least one of refers to the listed items or any combination of any number of listed items.
  • at least one of A, B, and C refers to one of the following situations: A, B, C, A and B, B and C, A and C, A, B and C in any of the seven cases.
  • the size of the sequence number of each process does not mean the order of execution.
  • the order of execution of each process should be determined by its function and internal logic.
  • the implementation process of the embodiments of this application should constitute any limitation.
  • 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 transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • 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)).

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé de communication et un dispositif associé. Ledit procédé comprend les étapes suivantes : une première station de base envoie un premier message à un dispositif de réseau central, le premier message étant utilisé pour demander l'acquisition d'informations concernant une tranche de réseau prise en charge par au moins une cellule contenue dans une seconde station de base, ou le premier message étant utilisé pour demander l'acquisition d'informations concernant une tranche de réseau prise en charge par au moins une zone de suivi à laquelle appartient au moins une cellule contenue dans la seconde station de base, les informations concernant la tranche de réseau comprenant l'identifiant de la tranche de réseau et la priorité de la tranche de réseau ; et la première station de base reçoit un second message envoyé par le dispositif de réseau central, le second message comprenant les informations concernant la tranche de réseau prise en charge par la ou les zones de suivi auxquelles appartiennent la ou les cellules contenues dans la seconde station de base. La présente invention facilite l'optimisation des performances de commutation entre une première station de base et une seconde station de base.
PCT/CN2020/084680 2019-04-26 2020-04-14 Procédé de communication et dispositif associé Ceased WO2020216099A1 (fr)

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