WO2020057441A1 - Appareil de communication et procédé d'indication de type de réseau central - Google Patents

Appareil de communication et procédé d'indication de type de réseau central Download PDF

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Publication number
WO2020057441A1
WO2020057441A1 PCT/CN2019/105704 CN2019105704W WO2020057441A1 WO 2020057441 A1 WO2020057441 A1 WO 2020057441A1 CN 2019105704 W CN2019105704 W CN 2019105704W WO 2020057441 A1 WO2020057441 A1 WO 2020057441A1
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Prior art keywords
network node
message
communication device
layer
core network
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PCT/CN2019/105704
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English (en)
Chinese (zh)
Inventor
石小丽
王瑞
罗海燕
王燕
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and a communication device for indicating a core network type.
  • a centralized unit (CU) -distributed unit (DU) separation architecture is supported, that is, a base station supports one CU and multiple DUs.
  • the CU has Radio resource control (RRC), packet data convergence protocol (PDCP), public data node (PDAP) protocol layer, DU has radio link control (radio link control, RLC) ) Layer, medium access control (MAC) layer, and physical layer (PHY) layer.
  • RRC Radio resource control
  • PDCP packet data convergence protocol
  • PDAP public data node
  • DU has radio link control (radio link control, RLC) ) Layer, medium access control (MAC) layer, and physical layer (PHY) layer.
  • RLC radio link control
  • MAC medium access control
  • PHY physical layer
  • LTE base stations can connect to 5G core networks of new radio access technology (new radio, NR), but it has not been considered in the CU-DU separated architecture where LTE base stations are connected to both LTE core networks and 5G core networks. How to choose the core network.
  • new radio new radio
  • the invention provides a core network type indication method and a communication device, which realize the core network type indication in the NR CU-DU separation architecture to further complete the core network selection.
  • a method for indicating a core network type includes:
  • the first network node sends a first message to the second network node.
  • the first message is used to indicate the type of core network supported by the first network node and the second network node, thereby realizing the core network of the first network node and the second network node.
  • Type indicates communication.
  • the first network node includes only a radio link control layer, a media access control layer, and a physical layer;
  • the second network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol Layer; or,
  • the first network node only includes a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer
  • the second network node only includes a radio link control layer, a media access control layer, and a physical layer.
  • the first network node is a distributed unit DU
  • the second network node is a centralized unit CU; or, the first network node is a CU and the second network node is a DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the first message includes public land mobile network PLMN information of a core network type and / or tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • the method before the first network node sends the first message to the second network node, the method further includes:
  • the first network node receives a second message, and the second message is used to determine a core network type
  • the first network node determines a core network type according to the second message.
  • a method for indicating a core network type includes:
  • the second network node receives a first message sent by the first network node, and the first message is used to indicate the type of core network supported by the second network node and the first network node, thereby realizing the core of the first network node and the second network node Net type indicates communication.
  • the second network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer
  • the first network node includes only a radio link control layer, a media access control layer, and a physical Layer;
  • the second network node includes only a radio link control layer, a media access control layer, and a physical layer.
  • the first network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the first network node is a distributed unit DU
  • the second network node is a centralized unit CU; or, the first network node is a CU and the second network node is a DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the first message includes public land mobile network PLMN information of a core network type and / or tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • a method for indicating a core network type includes:
  • the first network node sends a first message to the second network node, the first message is used to indicate the type of core network to which the terminal is connected at the third network node, and the core network type indication communication between the first network node and the second network node is implemented .
  • the first network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer;
  • the second network node includes only a radio link control layer, a media access control layer, and a physical Floor.
  • the first network node is a centralized unit CU
  • the second network node is a distributed unit DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the method further includes:
  • the first network node receives a second message sent by a third network node, and the second message includes information of a core network type.
  • the method further includes:
  • the first network node receives a third message sent by the second network node, and the third message includes handover configuration information, and the handover configuration information is generated by the second network node according to a core network type to which the terminal is connected at the third network node.
  • a method for indicating a core network type includes:
  • the second network node receives a first message sent by the first network node, and the first message is used to indicate a core network type to which the terminal is connected in the third network node, and the core network type indication of the first network node and the second network node is implemented Communication.
  • the second network node includes only a radio link control layer, a media access control layer, and a physical layer; the first network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol Floor.
  • the second network node is a distributed unit DU
  • the first network node is a centralized unit CU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the method further includes:
  • the second network node generates handover configuration information according to a core network type to which the terminal is connected in the third network node;
  • the second network node sends a third message to the first network node, and the third message includes handover configuration information for the first network node to send the handover configuration information to the third network node.
  • a communication device includes:
  • the sending unit is configured to send a first message to the second network node, and the first message is used to indicate the core network type supported by the communication device and the second network node, and implements the core network type indication communication between the communication device and the second network node.
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer;
  • the second network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer; or,
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the second network node only includes a radio link control layer, a media access control layer, and a physical layer.
  • the communication device is a distributed unit DU and the second network node is a centralized unit CU; or, the communication device is a CU and the second network node is a DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the first message includes public land mobile network PLMN information of a core network type and / or tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • the communication device further includes a receiving unit and a processing unit;
  • a receiving unit configured to receive a second message, and the second message is used to determine a core network type
  • a processing unit configured to determine a core network type according to the second message.
  • a communication device includes:
  • a receiving unit configured to receive a first message sent by a first network node, where the first message is used to indicate a core network type supported by the communication device and the first network node, and the core network type indication of the first network node and the communication device is implemented; Communication.
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer
  • the first network node includes only a radio link control layer, a media access control layer, and a physical layer;
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer.
  • the first network node only includes a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the first network node is a distributed unit DU and the communication device is a centralized unit CU; or, the first network node is a CU and the communication device is a DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the first message includes public land mobile network PLMN information of a core network type and / or tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • a communication device includes:
  • the sending unit is configured to send a first message to the second network node, and the first message is used to indicate the type of core network to which the terminal is connected at the third network node, and implements the core network type indication communication between the communication device and the second network node.
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer; the second network node includes only a radio link control layer, a media access control layer, and a physical layer.
  • the communication device is a centralized unit CU
  • the second network node is a distributed unit DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the communication device further includes a receiving unit, configured to receive a second message sent by a third network node, where the second message includes information about a core network type.
  • the receiving unit is further configured to receive a third message sent by the second network node, where the third message includes handover configuration information, and the handover configuration information is that the second network node according to the terminal in the third network The core network type to which the node is connected is generated.
  • a communication device includes:
  • the receiving unit is configured to receive a first message sent by the first network node, and the first message is used to indicate a core network type to which the terminal is connected in the third network node, and implements the core network type indication communication between the first network node and the communication device. .
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer; the first network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the communication device is a distributed unit DU
  • the first network node is a centralized unit CU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the communication device further includes a processing unit and a sending unit;
  • the processing unit is configured to generate handover configuration information according to a core network type to which a terminal is connected at a third network node;
  • the sending unit is configured to send a third message to the first network node, and the third message includes handover configuration information, and is used for the first network node to send the handover configuration information to the third network node.
  • a communication device including a processor.
  • the processor is configured to be coupled to the memory, and read and execute instructions in the memory to implement:
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer;
  • the second network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer; or,
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the second network node only includes a radio link control layer, a media access control layer, and a physical layer.
  • the communication device is a distributed unit DU and the second network node is a centralized unit CU; or, the communication device is a CU and the second network node is a DU.
  • the first message includes at least one of PLMN information of a core network type public land mobile network and tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • the processor is also used to read and execute instructions in memory to achieve:
  • the core network type is determined according to the second message.
  • the communication device further includes a memory.
  • a communication device which includes a processor, the processor is coupled to the memory, and reads and executes instructions in the memory to implement:
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer
  • the first network node includes only a radio link control layer, a media access control layer, and a physical layer;
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer.
  • the first network node only includes a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the communication device is a distributed unit DU and the first network node is a centralized unit CU; or, the communication device is a CU and the first network node is a DU.
  • the first message includes at least one of PLMN information of a core network type public land mobile network and tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • the communication device further includes a memory.
  • a communication device which includes a processor, the processor is coupled to the memory, and reads and executes instructions in the memory to implement:
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer; the second network node includes only a radio link control layer, a media access control layer, and a physical layer.
  • the communication device is a centralized unit CU
  • the second network node is a distributed unit DU.
  • the processor is also used to read and execute instructions in memory to achieve:
  • the processor is also used to read and execute instructions in memory to achieve:
  • the third message includes handover configuration information, and the handover configuration information is generated by the second network node according to a core network type to which the terminal is connected at the third network node.
  • the communication device further includes a memory.
  • a communication device which includes a processor, the processor is coupled to the memory, and reads and executes instructions in the memory to implement:
  • a first message sent by a first network node is received, and the first message is used to indicate a core network type to which the terminal is connected in the third network node.
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer; the first network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the communication device is a distributed unit DU
  • the first network node is a centralized unit CU.
  • the processor is also used to read and execute instructions in memory to achieve:
  • a third message is sent to the first network node, and the third message includes handover configuration information for the first network node to send the handover configuration information to the third network node.
  • the communication device further includes a memory.
  • a system which includes the ninth aspect or any possible implementation of the ninth aspect of the communication device, and the tenth aspect or any possible implementation of the tenth aspect of the communication device; or
  • the system includes the communication device of the eleventh aspect or any possible implementation of the eleventh aspect, and the communication device of any of the twelfth aspect or the second aspect.
  • a computer-readable storage medium stores a computer program.
  • the computer program is executed by a processor, any one or more of the first to fourth aspects may be implemented. The method described. Methods.
  • a computer program product containing instructions is provided, and when the instructions are run on a computer, the computer is caused to execute the method according to any one or more of the first to fourth aspects.
  • the type of the core network is indicated by the information sent between the first network node and the second network node, so that the first network node and the second network node according to the indicated core
  • the network type selects the core network.
  • FIG. 1 is a schematic diagram of a system architecture according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a control plane protocol stack according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a user plane protocol stack according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a CU-DU architecture of an ng-eNB according to an embodiment of the present invention.
  • FIG. 5 (a) and FIG. 5 (b) are schematic diagrams of MCG separation bearer selection in the MR-DC architecture according to an embodiment of the present invention
  • 6 (a) and 6 (b) are schematic diagrams of SCG bearer selection in an MR-DC architecture according to an embodiment of the present invention
  • FIG. 7 is a schematic architecture diagram of SCG separation bearer selection under an MR-DC architecture according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of ng-eNB CU and ng-eNB DU function segmentation according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of a method for indicating a core network type according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart of another core network type indication method according to an embodiment of the present invention.
  • FIG. 11 is a schematic flowchart of another core network type indication method according to an embodiment of the present invention.
  • FIG. 12 is a schematic flowchart of another core network type indication method according to an embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of another communication device according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of another communication device according to an embodiment of the present invention.
  • a 5G core network that can support LTE base stations to connect to NR is standard.
  • the system architecture is shown in Figure 1.
  • the 5G core network can be referred to as 5GC.
  • the system shown in Figure 1 can be called eLTE or NG-LTE, or it can be directly called LTE connected to 5GC, or E-UTRAN connected to 5GC, or LTE / 5GC.
  • the LTE base station supporting connection to 5GC is called ng-eNB.
  • 5GC includes access management function (Access Management Function, AMF), session management function (Session Management Function, SMF) and user plane management function (User Plane Function, UPF).
  • AMF Access Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • the function of AMF is similar to that of MME in LTE; the function of UPF and SMF is close to that of SGW + PGW in LTE.
  • the ng-eNB and gNB communicate through the interface Xn, and the ng-eNB, gNB and AMF and UPF in the 5GC communicate through the interface NG, as shown in FIG. 1.
  • the corresponding control plane protocol stack is shown in Figure 2, and the corresponding user plane protocol stack is shown in Figure 3.
  • the packet data convergence protocol packet data convergence protocol (packet data convergence protocol, PDCP) may use PDCP of E-UTRT, or PDCP of NR.
  • the PDCP uses NR's PDCP.
  • FIG. 4 is a schematic diagram of a CU-DU architecture of an ng-eNB according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a basic CU-DU architecture of an ng-eNB.
  • the CU-DU architecture of the ng-eNB may also be the scenario shown in FIG. 5 (a), FIG. 5 (b), FIG. 6 (a), FIG. 6 (b), and FIG. 7.
  • Figures 5 (a) and 5 (b) are the architecture diagrams of the master cell group (MCG) separation bearer selection under the MR-DC architecture, respectively;
  • Figures 6 (a) and 6 (b) are Under the MR-DC architecture, a schematic diagram of the secondary cell group (SCG) bearer selection architecture;
  • FIG. 1 the architecture diagram of the master cell group (MCG) separation bearer selection under the MR-DC architecture
  • the MR-DC architecture uses ng-eNB as the main base station to support the CU-DU separation architecture, and gNB as the auxiliary base station for multi-stream aggregation transmission.
  • the segmentation of the protocol layer is segmented at the PDCP and radio link control (RLC) layers, as shown in Figure 8, that is, the ng-eNB's CU has radio resource control (radio resource control (RRC) or part of the RRC control function, including all the protocol layer functions or part of the protocol layer functions of the existing base station; for example, including only the RRC function or part of the RRC function, or including the RRC function or the service data adaptation protocol (service data adaptation (protocol (SDAP)) layer function, or RRC / packet data convergence protocol (PDCP) layer function, or RRC / PDCP and some radio link control protocol RLC layer functions; or RRC / PDCP / media
  • the access control (MAC) layer or even part or all of the physical layer PHY functions, does not rule out any other possibility.
  • the DU of ng-eNB has all or part of the protocol layer functions of existing base stations, namely RRC / SDAP / PDCP / RLC / MAC / PHY part of the protocol layer functional units, such as including some RRC functions and PDCP / RLC / MAC / PHY and other protocol layer functions, or include PDCP / RLC / MA Protocol layer functions such as C / PHY, or protocol layer functions such as RLC / MAC / PHY, or part of RLC / MAC / PHY functions, or only all or part of PHY functions; it should be noted that the Functions may change, all within the scope of protection of this application.
  • FIG. 8 is a schematic diagram of CU function division of ng-eNB and DU function of ng-eNB.
  • embodiments of the present invention provide a method and a communication device for indicating a core network type, which are applicable to a CU-DU architecture of an ng-eNB.
  • the type information of the core network of the base station may refer to a core network (Evolved Packet Core, EPC) that only supports LTE, and only supports connection to a 5G core network (5GC), and supports connection to EPC and 5GC, that is, the base station only supports EPC, or only supports 5GC, or the base station supports both EPC and 5GC.
  • EPC Evolved Packet Core
  • Each PLMN can support one of three types of core networks, that is, each PLMN can only support the connection to EPC, or only to 5GC, or both EPC and 5GC.
  • TAC values there is a TAC of EPC for a cell under EPC; a TAC of 5GC for a cell under 5GC; and each PLMN of a cell under 5GC may also have a different TAC.
  • Cells under different core network types have different cell barred information, that is, there is EPC cell barred information for cells under EPC, and 5GC cell barred information for cells under 5GC.
  • FIG. 9 is a flowchart of a method for indicating a core network type according to an embodiment of the present invention. As shown in FIG. 9, the method may include the following steps:
  • the first network node sends a first message to the second network node.
  • the first message is used to indicate a core network type supported by the first network node and the second network node.
  • “supported” can also be understood as “supported connection”, where “supported connection” can refer to the direct connection of the first network node or the second network node to the core network, or the first network node or The second network node is indirectly connected to the core network through other elements.
  • the first message is used to indicate a core network type supported by the network configuration information
  • the network configuration information may be at least one of PLMN, TAC, and cell prohibition information.
  • the first network node includes only at least one of a radio link layer control RLC protocol layer, a media access control MAC layer, and a physical PHY layer; the second network node only includes a radio resource control RRC At least one of a protocol layer, a service data adaptation layer SDAP, and a packet data aggregation PDCP protocol layer; or
  • the first network node includes only at least one of the RRC protocol layer, the service data adaptation layer SDAP, and the PDCP protocol layer
  • the second network node includes only at least one of the RLC protocol layer, the MAC layer, and the PHY layer.
  • the first network node is a DU and the second network node is a CU; or, the first network node is a CU and the second network node is a DU.
  • the DU and the CU send the first message through the interface between them, and the interface between the DU and the CU may be referred to as a W1 interface.
  • the W1 interface may be an existing W1 interface or a newly defined W1 interface. In the embodiment of the present invention, if the W1 interface is a newly defined interface, the W1 interface may also have other names, and the name of the newly defined interface is not limited in the embodiment of the present invention.
  • the newly introduced PLMN list includes at least one PLMN that can be connected to the 5GC.
  • cell prohibition identification for UEs with 5GC-NAS, and introduce a new cell prohibition identification, such as "cell prohibition-5GC".
  • the newly introduced cell prohibition identifier can be used to identify the 5GC that the cell is forbidden to access.
  • the cell prohibition identifier may be included in a system information block 1 (system information block 1).
  • a new tracking area code (TAC) field for 5GC is introduced.
  • the TAC field can be a 3-byte field to distinguish it from the TAC field for EPC.
  • the TAC field for EPC is 2 Byte field.
  • the PLMN of 5GC can broadcast separate TAC, that is, the eNB can broadcast two TACs for each PLMN connected to EPC and 5GC, one for E-UTRA connected to EPC, and one for E-UTRA connected to 5GC.
  • This case is applicable to a radio access network (RAN) sharing situation and a non-RAN sharing situation.
  • RAN radio access network
  • the first message may include at least one of PLMN information and TAC information of the core network type.
  • the UE is connected to different core networks, such as EPC and / or 5GC, and the core network type indication between CU-DUs may exist in the following forms:
  • the CU and DU send the first message through the W1 interface.
  • the first message includes at least one of PLMN information and TAC information.
  • the first message also includes a core network type information CN.
  • type the CN type is used to indicate which core network is supported by the PLMN or TAC;
  • the TAC information may be an implicit indication, that is, it includes two TACs, one is an EPC TAC and the other is a 5GC TAC;
  • the PLMN may also be an implicit indication, that is, it includes two PLMNs, one is the PLMN of the EPC, and the other is the PLMN of the 5GC.
  • the PLMN information in the first message may include TAC information, or the TAC information and PLMN information may exist independently as separate cells.
  • the specific information element is, for example, the first message includes information CN type that explicitly indicates the type of the core network, as shown in Example 1, Example 2, Example 3, Example 4, and Example 5.
  • the PLMN information can also be called a PLMN cell, and its specific form can be a PLMN list.
  • M means that it is a mandatory option and O means that it is optional.
  • M and O in the above table are only examples. In fact, the cells in the above table can be M or It is O, and the present invention is not limited.
  • the CU and DU send the first message through the W1 interface.
  • the first message includes two PLMN information.
  • the two PLMN information represent the PLMN information supporting EPC and the PLMN information supporting 5GC. Examples 6 and 7 are shown.
  • the core network type is implicitly indicated by the two PLMN information.
  • the first message includes PLMN information and / or TAC information of each cell.
  • Each cell is identified by a cell identifier, and the cell identifier can be identified by a global cell identifier (CGI) and a physical cell identifier (PCI).
  • CGI global cell identifier
  • PCI physical cell identifier
  • the PLMN information may further include TAC information, as shown in Examples 1 and 4.
  • the TAC information may be implicit or displayed.
  • the implicit indication may include TAC information TAC-EPC for identifying EPC support and TAC-5GC for identifying TAC information supporting 5GC.
  • TAC-EPC TAC-EPC for identifying EPC support
  • TAC-5GC TAC-5GC for identifying TAC information supporting 5GC.
  • the target node can know that the cell supports 5GC after receiving the first message; if the TAC of the cell is TAC-EPC, the target node receives the first After the message, it can be known that the cell supports 5GC.
  • TAC-EPC and TAC-5GC may be distinguished by bytes.
  • TAC-EPC is 2 bytes and TAC-5GC is 3 bytes.
  • the PLMN information and the TAC information may also be separately included as one cell directly in the first message, as shown in Example 2, Example 3, and Example 5. It should be noted that PLMN and TAC may be respectively implicitly indicated or displayed.
  • Example 6 and Example 7 implicitly indicate the core network type through two PLMN information.
  • One PLMN message is used to indicate support for EPC, and another PLMN message is used to indicate support for 5GC.
  • each PLMN information may include a PLMN identity and TAC information.
  • the first message includes the PLMN information of the EPC.
  • the first message when the PLMN information and TAC information of the cell are used to indicate that the supported core network type is 5GC, the first message includes the PLMN information of 5GC.
  • the first message when the PLMN information and TAC information of the cell are used to indicate that the supported core network types are EPC and 5GC, the first message includes PLPC information of EPC and PLMN information of 5GC.
  • the PLMN information and the TAC information are independently contained in the first message.
  • the first message may include two TAC information and two PLMN information, which are respectively used to indicate that the supported core network types are EPC and 5GC.
  • the first message may further include slice support information.
  • the slice support information may be included in PLMN information.
  • the TAC information in the first message may also be PLMN granularity, that is, for a cell supporting EPC, each PLMN has a different TAC-EPC, and for a cell supporting 5GC, Each PLMN has a different TAC-5GC.
  • the first message when the first message includes PLMN information and / or TAC information, the first message may be a W1 interface establishment request message, or a W1 interface establishment response message, or a W1 interface configuration update message. Or W1 interface configuration update response message.
  • the first message in addition to the PLMN and / or TAC information, may further include cell barred information to indicate a core network type of the cell barred information.
  • cell barred information For specific forms of the cell prohibition information, refer to the descriptions of Example 12, Example 13, and Example 14. Of course, the first message may not include the cell prohibition information.
  • the second network node When the second network node receives the first message, it may determine the type of the core network to be connected according to the PLMN information and / or TAC information in the first message. Determine the core network type of the cell prohibition information.
  • the first message may include cell barred information of the core network type to indicate the core network type of the cell barred information.
  • the cell prohibition information may be included in the first message together with the PLMN information and / or the TAC information, or may be separately included in the first message, or may be included in a new message. limited.
  • the explicit or implicit indication of the core network type is implemented by the interaction between the CU and the DU, and the selection of the core network type is realized.
  • the method may further include:
  • the first network node receives a second message.
  • the first network node receives the second message sent by the management node
  • the management node may be a network manager of operation, administration, and maintenance (OAM), or another centralized management node, which is not described in this embodiment of the present invention. limited.
  • OAM administration, and maintenance
  • the management node configures PLMN information, TAC information, and core network type (CN) information for the first network node, and sends the configured PLMN information, TAC information, and core network type information to the first network node through a second message, Optionally, it may also be sent through other existing messages or new messages, which is not limited in the present invention.
  • the core network type information may be a display indication, or may be an implicit indication, such as the display indication manners shown in examples 8 and 9, and the implicit indication manners of examples 10 and 11. .
  • M means that it is a mandatory option and O means that it is optional.
  • M and O in the above table are only examples. In fact, the cells in the above table can be M or It is O, and the present invention is not limited.
  • the second message includes the cell identifiers CGI and PCI, as well as TAC information and PLMN information, where the PLMN information includes the PLMN identifier and core network type information.
  • the second message includes the cell identity CGI, PCI, and PLMN information, where the PLMN information includes the PLMN identity and TAC information and core network type (CN type) information.
  • the PLMN information includes the PLMN identity and TAC information and core network type (CN type) information.
  • CN type core network type
  • the second message includes the cell CGI, PCI, two PLMN information, and two TAC information.
  • One PLMN information is used to identify the PLMN of the EPC, and the other PLMN information is used to identify the PLMN of the 5GC.
  • the information is used to identify the TAC of the EPC, and the other TAC information is used to identify the TAC of the 5GC.
  • the second message includes cell CGI, PCI, and two PLMN information, where the PLMN information includes TAC information.
  • the DU determines that each cell corresponds to Each PLMN and TAC indicates the type of core network connected. Further, a first message is sent to the CU through the W1 interface, and the core network type of the information is explicitly or implicitly indicated in the first message.
  • the core network type indication interaction between PLMN information and TAC information between DU and CU is realized.
  • the DU may also explicitly or implicitly indicate the core network type in the broadcast message when broadcasting the message to the terminal, so as to indicate the type of core network to which the UE can connect.
  • the way of explicitly or implicitly indicating the type of the core network in the broadcast message is the same as the way of explicitly or implicitly indicating the type of the core network in S110, which will not be repeated here for brevity description.
  • the CU can determine the cores supported by each cell. Net type.
  • the CU sends a first message to the DU through the W1 interface, and explicitly or implicitly indicates the type of the core network in the first message. The interaction of the core network type indication of the PLMN information and the TAC information.
  • the CU can determine the core network type supported by each cell, and it can perform correctly. The following process:
  • paging When a CU receives a paging message from the core network, the CU determines the type of the core network according to the paging identification information (UE) in the paging message, so that the paging sent by the CU to the DU The message fills in the paging information corresponding to the core network type.
  • the UE paging identifier is S-TMSI; for 5GC paging, the UE paging identifier is 5G-S-TMSI.
  • the CU determines the core network type through the correspondence between the TAI in the paging message and the PLMN information, TAC information, and corresponding core network type information that the CU has obtained.
  • the paging message sent by the CU to the DU is filled with paging information corresponding to the core network type to complete paging.
  • a handover restriction list (handover restriction list): After the CU receives handover restriction information (or a handover restriction list) sent by the core network, the CU according to the saved PLMN information, TAC information, and corresponding core network type information Determine which PLMN and / or TAC are restricted to use which core network respectively, so that processes such as handover can be performed correctly.
  • the core network interface is established: After the CU receives the PLMN information and TAC information sent by the DU, the CU establishes an interface with the core network. During the interface establishment process, the CU sends each PLMN information and TAC information that support each core network type. For the corresponding core network, for example, when establishing an interface with the EPC, send PLMN information and TAC information supporting EPC to the EPC; or when establishing an interface with 5GC, send PLMN information and TAC information supporting 5GC to 5GC. The establishment of the interface between the CU and the core network is realized.
  • the DU after the DU obtains PLMN information, TAC information, and corresponding core network type information, it can determine the core network supported by the cell, so that it can correctly send a broadcast message to the UE, and instruct the UE to Information about the core network to which the corresponding cell can be connected.
  • the method for indicating the core network type solveds the indication of the core network type corresponding to the PLMN and TAC associated with the cell during the interaction between the CU and the DU, so that the DU can correctly report to the UE Broadcast messages enable the CU to correctly perform processes such as paging, handover restrictions, and interface establishment.
  • the CU or the DU For the cell barring information, whether the cell barring access is performed or not can be determined by the CU or the DU. If it is the CU that determines whether the cell is forbidden to access, in one embodiment, the CU may determine whether the cell is forbidden to access according to the neighboring cell information. Of course, the CU can also determine whether to perform cell barring access through other existing or new technical methods, which is not limited in the embodiment of the present invention.
  • FIG. 10 is a schematic flowchart of another core network type indication method according to an embodiment of the present invention. As shown in FIG. 10, the method may include the following steps:
  • the CU sends a first message to the DU, where the first message includes cell prohibition information.
  • the CU After the CU determines the cell prohibition information of each core network, the CU sends a first message to the DU through the W1 interface.
  • the first message contains the cell prohibition information.
  • the cell prohibition information is used to indicate the core network type. Into the cell, the type of core network that the cell supports.
  • the cell prohibition information may be granular in the core network, that is, there is EPC cell prohibition information for cells under EPC, and 5GC cell prohibition information for 5GC cells.
  • the cell prohibition information may also be PLMN granularity, that is, for a cell under the EPC, there are cell prohibition information for PLMN1 of the EPC, cell prohibition information for PLMN2, and the like.
  • the cell prohibition information is used to indicate whether the UE can access the cell.
  • the cell prohibition information of a certain cell is the 5GC cell prohibition information. If the UE wants to access the 5GC, it cannot pass the description. The cell is connected to 5GC.
  • the core network type of the cell prohibition information may be indicated explicitly or implicitly.
  • the core network type is explicitly indicated by including a core network type in the first message; the core network type is implicitly indicated by including two cell prohibition information in the first message, where the two cell prohibition information are respectively It is the cell prohibition information of two different core networks.
  • the specific form of the cell prohibition information may be a list.
  • the core network type display indication method of the cell prohibition information is shown in Example 12 and Example 13.
  • the cell prohibition list includes core network type (CN) type information, cell identification (CGI) list, and cell prohibition information.
  • the cell identity (CGI) list includes the cell identity of the cell used to access the EPC and the cell identity of the cell used to access the 5GC, and the corresponding CGI information is selected according to the CN type instruction.
  • the cell prohibition information includes EPC or 5GC core network type cell prohibition information, and the corresponding cell prohibition information is selected according to the CN type instruction.
  • the terminal taking the cell prohibition information of the EPC as an example, the terminal is prohibited from accessing the core network whose core network type is the EPC through the cell.
  • M means that it is a mandatory option and O means that it is optional.
  • M and O in the above table are only examples. In fact, the cells in the above table can be M or It is O, and the present invention is not limited.
  • the first message includes a cell prohibition list
  • the cell prohibition list includes core network type (CN) type information, a cell identifier CGI, and cell prohibition information.
  • the core network type information in the cell prohibition list, the cell identifier CGI, and the cell prohibition information indicate to the terminal which cells are forbidden to access which type of core network.
  • the core network type information included in the cell prohibition list in Example 13 is EPC
  • the cell identifier CGI is Cell1
  • the cell prohibition information indicates that the terminal is prohibited from accessing the information, then this example prohibits the terminal from accessing the EPC network through the cell1.
  • Example 14 includes two cell prohibition information. One of the two cell prohibition lists is used to indicate that the core network type is EPC, and the other cell prohibition list is used to indicate that the core network type is 5GC. .
  • the cell prohibition information may be an enumeration type, such as ENUMERATED ⁇ barred, notBarred ⁇ .
  • M means that it is a mandatory option and O means that it is optional.
  • M and O in the above table are only examples. In fact, the cells in the above table can be M or It is O, and the present invention is not limited.
  • the first message may be a DU configuration update message, a DU configuration update response message, a CU configuration update message, a CU configuration update response message, a W1 interface establishment request / response message, a bearer content setting / Modify request / response (for example, bearer context / setup / modification request / response) messages, bearer content modification request / confirmation (for example, bearer context / modification required / confirm) messages, and so on.
  • a bearer content setting / Modify request / response for example, bearer context / setup / modification request / response
  • bearer content modification request / confirmation for example, bearer context / modification required / confirm
  • the method may further include:
  • the DU sends a change message to the CU, where the change message includes the changed cell prohibition information.
  • the DU After the DU receives the first message sent by the CU, the DU determines whether to change the cell prohibition information according to the current load or other information. For example, the cell prohibition information in the first message received by the DU indicates that the terminal is prohibited from accessing the core network type. After the core network of the EPC is determined by the DU according to various required information, the terminal should also be prohibited from accessing the core network with the core network type of 5GC. Then the DU changes the cell prohibition information and passes the changed cell prohibition information through the W1 interface. Send to CU.
  • the method may further include:
  • the CU sends a determination message to the DU.
  • the CU After receiving the change message sent by the DU, the CU further determines whether the cell prohibition information needs to be changed again and sends a determination message to the DU to determine the cell prohibition information.
  • the cell prohibition information may also be determined by the DU.
  • the method for indicating the core network type of the cell prohibition information determined by the DU is shown in FIG. 11. The method may include the following steps:
  • the DU sends a first message to the CU, where the first message includes cell prohibition information.
  • the DU may determine the cell prohibition information by using an existing or newly created method, which is not limited in the embodiment of the present invention. After the DU determines the cell prohibition information, it sends a first message to the CU through the W1 interface.
  • the first message includes the cell prohibition information.
  • the cell prohibition information is used to indicate which type of core network the terminal is prohibited from accessing through the cell.
  • the cell prohibition information may explicitly or implicitly indicate the core network type of the core network forbidden to access, and the manner of explicitly or implicitly indicating the core network type is as shown in Example 12, Example 13, and Example 14. The method is the same, and is not repeated here for brevity description.
  • the method further includes:
  • the CU sends an update message to the DU.
  • the CU after the CU receives the cell prohibition information, it can further decide whether to update the cell prohibition information.
  • the core network type of the cell prohibition information received by the CU is EPC
  • the core network type of the cell prohibition information is determined by the DU according to the case that the PLMN only supports 5GC.
  • the CU After receiving the cell prohibition information sent by the DU, the CU further determines whether to perform cell prohibition on the 5GC. If it is determined that the cell prohibition is also performed on the 5GC, the CU may update the cell prohibition information and send the updated cell prohibition information to the DU.
  • the CU may also determine the core network type of the cell prohibition information according to the acquired PLMN information, specifically CU According to the core network type indicated in the PLMN information, the core network type of the cell prohibition information is determined. For example, the PLMN only supports access to 5GC, then it can be determined that the core network type of the cell prohibition information is EPC.
  • An embodiment of the present invention also provides a method for indicating a core network type. As shown in FIG. 12, the method is applied to a scenario of a base station handover under a CU-DU architecture. As shown in FIG. 12, the method may include the following steps:
  • S410 The first network node sends a first message to the second network node.
  • the first message is used to indicate the type of core network to which the terminal is connected at the third network node.
  • the first network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer; the second network node includes only a radio link control layer and a media interface. Into the control and physical layers.
  • the first network node is a CU and the second network node is a DU.
  • CU and DU are two network nodes of the target base station.
  • the third network node is a source base station.
  • the terminal performs base station handover
  • the CU of the target base station receives the handover request message sent by the source base station
  • the CU sends a first message to the DU through the W1 interface, where the handover request message includes the core connected to the terminal at the source base station Network type information.
  • the first message is used to indicate the type of core network to which the terminal is connected at the source base station.
  • the second network node In order to facilitate the second network node to generate handover configuration information according to the core network type to which the terminal indicated by the first message is connected in the third network node.
  • the first message sent by the CU to the DU may explicitly or implicitly indicate the type of core network to which the terminal is connected at the source base station.
  • Explicitly indicating the type of core network to which the terminal is connected at the source base station may be specifically that the first message includes information of the type of core network to which the terminal is connected at the source base station.
  • the specific manner of implicitly indicating the type of core network to which the terminal is connected at the source base station may be: for example, using quality of service (QoS) information to indicate the type of core network supported by the terminal at the source base station.
  • QoS quality of service
  • different types of core networks use different QoS information, as shown in Example 11:
  • M means that it is a mandatory option and O means that it is optional.
  • M and O in the above table are only examples. In fact, the cells in the above table can be M or It is O, and the present invention is not limited.
  • E-UTRAN in the table refers to the QoS used when the target CU connects to the EPC; DRB information refers to the QoS used when the target CU connects to the 5GC.
  • the QoS of different core network types is used to implicitly indicate the core network type to which the terminal is connected at the source base station.
  • the method may further include:
  • the first network node receives a second message.
  • the second message is sent by the third network node to the first network node.
  • the third network node is a source base station.
  • the second message includes information of a core network type to which the terminal is connected at the third network node.
  • the method further includes:
  • S430 The second network node sends a third message to the first network node.
  • the second network node When the second network node receives the first message sent by the first network node, the second network node generates handover configuration information according to the type of the core network connected to the third network node by the terminal indicated by the first message, and changes the handover configuration Contained in the third message and sent to the first network node.
  • the first network node is a CU and the second network node is a DU.
  • the DU After receiving the first message sent by the CU, the DU generates a handover configuration according to the type of the core network supported by the source base station for the terminal indicated in the first message. Information, and send the handover configuration information to the CU, so that after the CU receives the handover configuration information, it sends the handover configuration information to the source base station, and then the source base station to the terminal, and then completes the terminal handover from the source base station to the target base station.
  • FIGS. 9 to 12 illustrate a method for indicating a core network type.
  • the first network node and the second network node provided by the embodiment of the present invention are described below with reference to FIGS. 13 and 14.
  • FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in FIG. 13, the communication device includes a transmitting unit 1310.
  • the sending unit 1310 is configured to send a first message to the second network node.
  • the first message is used to indicate the core network type supported by the communication device and the second network node, and the core network type indication of the communication device and the second network node is implemented. Communication.
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer;
  • the second network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet Data aggregation protocol layer; or,
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the second network node only includes a radio link control layer, a media access control layer, and a physical layer.
  • the communication device is a distributed unit DU and the second network node is a centralized unit CU; or, the communication device is a CU and the second network node is a DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the first message includes public land mobile network PLMN information of a core network type and / or tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • the communication device further includes a receiving unit 1320 and a processing unit 1330;
  • a receiving unit 1320 configured to receive a second message, and the second message is used to determine a core network type
  • the processing unit 1330 is configured to determine a core network type according to the second message.
  • the communication device may further include a storage unit for storing data and instructions.
  • the functions of the functional units in the communication device can be implemented through the steps performed by the first network node in the embodiments shown in FIG. 9 to FIG. 12. Therefore, the specific work of the communication device provided by the embodiment of the present invention The process is not repeated here.
  • An embodiment of the present invention further provides a communication device. As shown in FIG. 14, the communication device includes a receiving unit 1410.
  • the receiving unit 1410 is configured to receive a first message sent by a first network node, where the first message is used to indicate a core network type supported by the communication device and the first network node, and the core network type of the first network node and the communication device is realized. Indicates communication.
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer
  • the first network node includes only a radio link control layer and a media access control layer.
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer.
  • the first network node only includes a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the first network node is a distributed unit DU and the communication device is a centralized unit CU; or, the first network node is a CU and the communication device is a DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the first message includes public land mobile network PLMN information of a core network type and / or tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • the communication device may further include a sending unit 1420, a processing unit 1430, and a storage unit 1440.
  • the sending unit 1420 is configured to send data information to the first network node
  • the storage unit 1440 is configured to store data.
  • the processing unit 1430 is configured to store information such as data information received from the first network node.
  • the functions of the functional units in the communication device can be implemented through the steps performed by the second network node in the embodiments shown in FIG. 9 to FIG. 12. Therefore, the specific work of the communication device provided by the embodiment of the present invention The process is not repeated here.
  • An embodiment of the present invention further provides a communication device, as shown in FIG. 13.
  • the sending unit 1310 is configured to send a first message to the second network node, where the first message is used to indicate a core network type to which the terminal is connected in the third network node, and the core network type indication communication between the communication device and the second network node is implemented. .
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer; the second network node includes only a radio link control layer and a media access control layer. Layer and physical layer.
  • the communication device is a centralized unit CU, and the second network node is a distributed unit DU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the receiving unit 1320 is configured to receive a second message sent by a third network node, where the second message includes information about a core network type.
  • the receiving unit 1320 is further configured to receive a third message sent by the second network node, where the third message includes handover configuration information, and the handover configuration information is for the second network node according to the terminal Generated in the core network type to which the third network node is connected.
  • the functions of the functional units in the communication device can be implemented through the steps performed by the first network node in the embodiments shown in FIG. 9 to FIG. 12. Therefore, the specific work of the communication device provided by the embodiment of the present invention The process is not repeated here.
  • An embodiment of the present invention further provides a communication device, as shown in FIG. 14.
  • the receiving unit 1410 is configured to receive a first message sent by a first network node, where the first message is used to indicate a core network type to which the terminal is connected in the third network node, and the core network type indication of the first network node and the communication device is implemented. Communication.
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer;
  • the first network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet Data aggregation protocol layer.
  • the communication device is a distributed unit DU
  • the first network node is a centralized unit CU.
  • the indication of the core network type of CU and DU interaction is realized.
  • the processing unit 1430 is configured to generate handover configuration information according to a core network type to which the terminal is connected at the third network node;
  • the sending unit 1420 is configured to send a third message to the first network node, where the third message includes handover configuration information, and is used for the first network node to send the handover configuration information to the third network node.
  • the functions of the functional units in the communication device can be implemented through the steps performed by the second network node in the embodiments shown in FIG. 9 to FIG. 12. Therefore, the specific work of the communication device provided by the embodiment of the present invention The process is not repeated here.
  • FIG. 15 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in FIG. 15, the communication device includes a processor 1510. The processor is configured to be coupled to the memory, and read and execute instructions in the memory to implement:
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer;
  • the second network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet Data aggregation protocol layer; or,
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the second network node only includes a radio link control layer, a media access control layer, and a physical layer.
  • the first message includes at least one of PLMN information of a core network type public land mobile network and tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • the processor 1510 is further configured to read and execute instructions in the memory to implement:
  • the core network type is determined according to the second message.
  • the communication device is a distributed unit DU and the second network node is a centralized unit CU; or, the communication device is a CU and the second network node is a DU.
  • the communication device when the communication device is a DU or a CU, the communication device may further include a transceiver 1520, and the processor 1510 reads instructions in the memory to implement: controlling the transceiver 1520 to send the first to the CU or DU Message.
  • the processor 1510 is further configured to read and execute instructions in the memory, so as to implement: the control transceiver 1520 receives the second message, and the processor 1510 determines the core network type according to the second message.
  • the communication device further includes a memory 1530.
  • the processor 1510, the transceiver 1520, and the memory 1530 are connected through a communication bus.
  • the functions of the functional devices in the communication device can be implemented through the steps performed by the first network node in the embodiments shown in FIG. 9 to FIG. 12. Therefore, the specific work of the communication device provided by the embodiment of the present invention The process is not repeated here.
  • An embodiment of the present invention further provides a communication device.
  • the communication device includes a processor 1610, and the processor 1610 is coupled to a memory, and reads and executes instructions in the memory to implement:
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer
  • the first network node includes only a radio link control layer and a media access control And physical layers
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer.
  • the first network node only includes a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer.
  • the first message includes at least one of PLMN information of a core network type public land mobile network and tracking area code TAC information.
  • the first message includes cell prohibition information of a core network type.
  • the communication device is a distributed unit DU, and the first network node is a centralized unit CU; or, the communication device is a CU, and the first network node is a DU.
  • the communication device may further include a transceiver 1620; the processor 1610 reads and executes instructions in the memory to implement: controlling the transceiver 1620 to receive the first message sent by the first network node.
  • the communication device further includes a memory 1630.
  • the processor 1610, the transceiver 1620, and the memory 1630 are connected through a communication bus.
  • the functions of the functional devices in the communication device can be implemented through the steps performed by the second network node in the embodiments shown in FIG. 9 to FIG. 12. Therefore, the specific work of the communication device provided by the embodiment of the present invention The process is not repeated here.
  • An embodiment of the present invention further provides a communication device, as shown in FIG. 15.
  • the processor 1510 reads and executes instructions in the memory to implement:
  • the communication device includes only a radio resource control protocol layer, a service data adaptation layer, and a packet data convergence protocol layer; the second network node includes only a radio link control layer and a media access control layer. Layer and physical layer.
  • the processor 1510 is further configured to read and execute instructions in the memory to implement:
  • the processor 1510 is further configured to read and execute instructions in the memory to implement:
  • the third message includes handover configuration information, and the handover configuration information is generated by the second network node according to a core network type to which the terminal is connected at the third network node.
  • the communication device is a centralized unit CU, and the second network node is a distributed unit DU.
  • the communication device When the communication device is a CU, the communication device further includes a transceiver 1520, and the processor 1510 reads and executes instructions in the memory to implement: controlling the transceiver 1520 to send the first message to the second network node.
  • the processor 1510 is further configured to read and execute instructions in the memory, so as to implement: the control transceiver 1520 receives the third message sent by the second network node.
  • the communication device further includes a memory 1530.
  • the functions of the functional devices in the communication device can be implemented through the steps performed by the first network node in the embodiments shown in FIG. 9 to FIG. 12. Therefore, the specific work of the communication device provided by the embodiment of the present invention The process is not repeated here.
  • An embodiment of the present invention further provides a communication device. As shown in FIG. 16, the processor 1610 reads and executes instructions in a memory to implement:
  • a first message sent by a first network node is received, and the first message is used to indicate a core network type to which the terminal is connected in the third network node.
  • the communication device includes only a radio link control layer, a media access control layer, and a physical layer;
  • the first network node includes only a radio resource control protocol layer, a service data adaptation layer, and a packet Data aggregation protocol layer.
  • the processor 1610 is further configured to read and execute instructions in the memory to implement:
  • a third message is sent to the first network node, and the third message includes handover configuration information for the first network node to send the handover configuration information to the third network node.
  • the communication device is a distributed unit DU
  • the first network node is a centralized unit CU.
  • the communication device may further include a transceiver 1620, and the processor 1610 reads and executes instructions in the memory to implement: controlling the transceiver 1620 to receive the first message sent by the first network node.
  • the processor 1610 reads and executes instructions in the memory to implement: generating switching configuration information according to the core network type to which the terminal is connected at the third network node, and controlling the transceiver 1620 to the first network node Send a third message.
  • the communication device further includes a memory 1630.
  • the functions of the functional devices in the communication device can be implemented through the steps performed by the second network node in the embodiments shown in FIG. 9 to FIG. 12. Therefore, the specific work of the communication device provided by the embodiment of the present invention The process is not repeated here.
  • An embodiment of the present invention further provides a system, which includes the communication device described in FIG. 15 or FIG. 16.
  • An embodiment of the present invention further provides a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program is executed by a processor, the methods in FIG. 9 to FIG. 12 are implemented.
  • An embodiment of the present invention further provides a computer program product containing instructions, and when the instructions are run on a computer, the computer is caused to execute the methods in FIG. 9 to FIG. 12.
  • the processor provided in FIG. 15 and FIG. 16 may be a Central Processing Unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), and application-specific integrated circuits. (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • all or part of the embodiments of the present invention may be implemented by software, hardware, firmware, or any combination thereof.
  • software When implemented in software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present invention are wholly or partially generated.
  • 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 medium to another computer-readable medium, for example, the computer instructions may be transmitted from a website site, computer, server, or data center through a cable (Such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) for transmission to another website site, 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, a data center, and the like that includes one or more available medium integration.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state hard disk).

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

Abstract

La présente invention concerne un procédé d'indication de type de réseau central et un appareil de communication. Le procédé comprend un premier nœud de réseau envoyant un premier message à un second nœud de réseau, le premier message étant utilisé pour indiquer un type de réseau central pris en charge par le premier nœud de réseau et le second nœud de réseau, ce qui permet de réaliser l'indication du type de réseau central de communication entre le premier nœud de réseau et le second nœud de réseau, et de réaliser en outre l'utilisation et la sélection d'un réseau central.
PCT/CN2019/105704 2018-09-17 2019-09-12 Appareil de communication et procédé d'indication de type de réseau central WO2020057441A1 (fr)

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113630841A (zh) * 2020-05-07 2021-11-09 中兴通讯股份有限公司 基站选择方法、装置、基站和存储介质

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150327142A1 (en) * 2014-05-08 2015-11-12 Marta Martinez Tarradell Apparatus, computer-readable medium, and method to support low complexity user equipment
US20160262069A1 (en) * 2015-03-02 2016-09-08 Spidercloud Wireless, Inc. Gateway coordinating multiple small cell radio access networks
CN106454943A (zh) * 2015-08-12 2017-02-22 北京三星通信技术研究有限公司 一种节点管理范围的控制方法与设备
CN107734573A (zh) * 2016-08-12 2018-02-23 华为技术有限公司 切换方法、基站及通信系统
CN108024301A (zh) * 2016-11-04 2018-05-11 夏普株式会社 基站、用户设备及其执行的方法
CN108307425A (zh) * 2016-08-11 2018-07-20 财团法人资讯工业策进会 支持多连接性的通信系统及其连接方法
CN108370535A (zh) * 2017-10-20 2018-08-03 北京小米移动软件有限公司 接入方法、装置、用户设备及基站
CN108521881A (zh) * 2017-10-30 2018-09-11 北京小米移动软件有限公司 切换方法、装置及基站

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106332222A (zh) * 2015-07-02 2017-01-11 北京三星通信技术研究有限公司 一种网络选择的方法和基站
CN112672343B (zh) * 2016-08-09 2022-04-26 三星电子株式会社 无线通信系统中管理用户平面操作的方法和装置
CN108024314B (zh) * 2016-11-03 2021-07-16 华为技术有限公司 一种选择网络的方法及装置
CN107027153B (zh) * 2017-03-16 2020-12-08 上海华为技术有限公司 业务的切换方法、上下文迁移方法及相关设备
CN108134843B (zh) * 2018-01-26 2020-07-31 重庆邮电大学 一种5g-c-ran场景下的服务功能链部署方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150327142A1 (en) * 2014-05-08 2015-11-12 Marta Martinez Tarradell Apparatus, computer-readable medium, and method to support low complexity user equipment
US20160262069A1 (en) * 2015-03-02 2016-09-08 Spidercloud Wireless, Inc. Gateway coordinating multiple small cell radio access networks
CN106454943A (zh) * 2015-08-12 2017-02-22 北京三星通信技术研究有限公司 一种节点管理范围的控制方法与设备
CN108307425A (zh) * 2016-08-11 2018-07-20 财团法人资讯工业策进会 支持多连接性的通信系统及其连接方法
CN107734573A (zh) * 2016-08-12 2018-02-23 华为技术有限公司 切换方法、基站及通信系统
CN108024301A (zh) * 2016-11-04 2018-05-11 夏普株式会社 基站、用户设备及其执行的方法
CN108370535A (zh) * 2017-10-20 2018-08-03 北京小米移动软件有限公司 接入方法、装置、用户设备及基站
CN108521881A (zh) * 2017-10-30 2018-09-11 北京小米移动软件有限公司 切换方法、装置及基站

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LI, JUNJIE ET AL.: "Challenge and Technical Scheme of 5G Bearing Network", ZTE TECHNOLOGY JOURNAL, vol. 24, no. 1, 12 January 2018 (2018-01-12), pages 49 - 52 *
XU, SEN ET AL.: "Impact of 5G Wireless Network Architecture on Transport Network", ZTE TECHNOLOGY JOURNAL, vol. 24, no. 1, 6 January 2018 (2018-01-06), pages 6 - 12 *

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