WO2021213370A1 - Procédé de rapport de mode de transmission, appareil, dispositif et support électronique - Google Patents

Procédé de rapport de mode de transmission, appareil, dispositif et support électronique Download PDF

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Publication number
WO2021213370A1
WO2021213370A1 PCT/CN2021/088347 CN2021088347W WO2021213370A1 WO 2021213370 A1 WO2021213370 A1 WO 2021213370A1 CN 2021088347 W CN2021088347 W CN 2021088347W WO 2021213370 A1 WO2021213370 A1 WO 2021213370A1
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Prior art keywords
mbs
transmission mode
entity
reporting
service
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PCT/CN2021/088347
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English (en)
Chinese (zh)
Inventor
段小嫣
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大唐移动通信设备有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0894—Policy-based network configuration management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
    • H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management
    • H04L67/141—Setup of application sessions

Definitions

  • 5G (5th generation) mobile communication systems can support unicast transmission.
  • the 5G mobile communication system will support multicast/broadcast data transmission. Therefore, in the 5G mobile communication system, how to better manage these different data transmission methods is currently an urgent problem to be solved.
  • the transmission mode corresponding to the designated radio resource is determined as the MBS transmission mode, and the designated radio resource includes the MBS PDU session or QoS flow structure.
  • the reporting the MBS transmission mode to the first CN device includes:
  • the first message also includes a QoS flow identifier and/or a temporary mobility group identifier TMGI;
  • the embodiments of the present disclosure provide a method for reporting a transmission mode.
  • the method for reporting a transmission mode is applied to a CN device of a first core network and includes:
  • the corresponding MBS parameter is determined according to the MBS transmission mode.
  • the MBS transmission mode used by the AN device sent by the receiving AN device includes:
  • the first message includes the MBS session identifier and the transmission mode identifier used to characterize the MBS transmission mode, determine the MBS transmission mode of the MBS session according to the MBS session identifier and the transmission mode identifier; or,
  • the embodiments of the present disclosure provide a method for reporting a transmission mode, and the method for reporting a transmission mode is used for a session management function SMF entity, including:
  • the SMF entity receives a report that the transmission mode of one AN or all ANs under specified conditions has changed from unicast to multicast; wherein, the specified conditions include one or more of the specified MBS, the specified application, and the specified service stream. item.
  • it also includes:
  • the MBS transmission mode of the multicast broadcast service sent by the session management function SMF entity or the MBS analysis information including the MBS transmission mode sent by the network data analysis function NWDAF entity; wherein, the MBS transmission mode is adopted by the AN equipment of the access network MBS transmission method;
  • the MBS strategy is updated at least according to the MBS transmission mode or the MBS analysis information.
  • the updated MBS service parameters are sent to the PCF entity, so that the PCF entity updates the service MBS policy according to the MBS service parameters.
  • the CN determination module is used to determine the corresponding MBS parameters according to the MBS transmission mode.
  • the SMF sending module is used to send the MBS transmission mode to the policy control function PCF entity or the network data analysis function NWDAF entity.
  • an embodiment of the present disclosure provides a transmission mode reporting device.
  • the transmission mode reporting device is used for a policy control function PCF entity, and includes:
  • the PCF update module is used to update the MBS strategy at least according to the MBS transmission mode or the MBS analysis information.
  • the determining the MBS transmission mode adopted by the AN device includes:
  • the reporting the MBS transmission mode to the first CN device includes:
  • the set reporting conditions include:
  • the MBS session management parameter is sent to the user plane function UPF entity or the AN device.
  • the second CN device is an SMF entity, send the MBS analysis information to the SMF entity, so that the SMF entity updates the MBS session management parameters according to the MBS analysis information; or,
  • the MBS transmission mode sent by the AN device is received.
  • an embodiment of the present disclosure provides an application function AF entity, including a memory, a processor, and a program stored in the memory and running on the processor, wherein the processor executes the program when the program is executed. To achieve the following steps:
  • embodiments of the present disclosure provide a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the transmission method reporting method as described in the second aspect are implemented .
  • FIG. 1 is a flowchart of a method for reporting a transmission mode according to an embodiment of the disclosure
  • FIG. 8 is an information interaction diagram of another transmission method reporting method provided by an embodiment of the disclosure.
  • FIG. 10 is a block diagram of a module of an apparatus for reporting a transmission mode according to an embodiment of the present disclosure
  • FIG. 14 is a block diagram of a device for reporting a transmission mode according to an embodiment of the disclosure.
  • FIG. 15 is a schematic structural diagram of a network device provided by an embodiment of the disclosure.
  • the difference between multicast and broadcast is that the multicast receiving device receives specific multicast service content (ie data) by signing and/or joining the group, and canceling the contract and/or leaving the group to terminate the reception of the service content; while broadcast Any device in the area or network can receive the broadcast content without signing up or joining a group.
  • specific multicast service content ie data
  • 5G mobile communication systems can support unicast transmission.
  • the 5G mobile communication system will support multicast/broadcast data transmission. Therefore, in the 5G mobile communication system, how to better manage these different data transmission methods is currently an urgent problem to be solved.
  • 5G MBS Multicast Broadcast Service
  • 5G AN Access Network, access network
  • 5G AN Access Network, access network
  • embodiments of the present disclosure provide a method for reporting a transmission mode to implement accurate statistical analysis or prediction of network data and performance in a specific transmission mode, so as to more effectively set and optimize network management strategies.
  • FIG. 1 is a flowchart of a method for reporting a transmission mode provided by an embodiment of the disclosure, and the method is used in an AN device; as shown in FIG. 1, the method may include the following steps:
  • the first message may be an N2 message.
  • the N2 message is a PDU session resource notification (Session Resource Notify) message or an MBS session resource notification message.
  • the MBS transmission mode adopted by the AN device may include transmission modes such as unicast, multicast, or broadcast.
  • the MBS transmission mode adopted by the AN device is used to characterize the transmission mode corresponding to the radio resources used to transmit MBS data between the AN device and the UE.
  • the first message includes the MBS session identifier and the transmission mode identifier used to characterize the MBS transmission mode, determine the MBS transmission mode of the MBS session according to the MBS session identifier and the transmission mode identifier; or ,
  • S2013 If the first message includes the MBS session identifier and wireless resource information used to characterize the MBS transmission mode, determine the MBS transmission mode of the MBS session according to the MBS session identifier and the wireless resource information.
  • the SMF entity may send the MBS transmission mode to the PCF entity or the NWDAF entity, the purpose of which is to allow the PCF entity to update the MBS policy according to the MBS transmission mode, and the NWDAF entity performs analysis according to the MBS transmission mode to obtain MBS analysis information.
  • the SMF entity can update the MBS session management parameters at least according to the MBS service strategy or MBS analysis information after receiving the MBS service strategy returned by the PCF entity or the MBS analysis information returned by the NWDAF entity, and manage the MBS session
  • the parameters are sent to the UPF entity or the AN device, so that the AN device can update the MBS service parameters of the AN device according to the MBS session management parameters, so as to better meet the MBS service requirements.
  • the MBS strategy may include MBS session or service strategy, such as MBS service area, MBS QoS parameters, charging strategy, etc.
  • the PCF entity can update the MBS policy at least according to the MBS transmission mode or MBS analysis information, thereby A more effective setting and optimization of network management strategies have been achieved.
  • the method may further include the following steps:
  • S404 Receive the MBS service parameter returned by the AF entity, and update the MBS policy according to the MBS service parameter.
  • the method may further include the following steps:
  • the MBS transmission mode adopted by the AN device may include a transmission mode such as unicast, multicast, or broadcast.
  • the MBS transmission mode adopted by the AN device is used to characterize the transmission mode corresponding to the radio resources used to transmit MBS data between the AN device and the UE.
  • the NWDAF entity can interact with other input data (for example: DNN (Data Network Name), S-NSSAI (Single Network Slice Selection Assistance Information, single network slice selection assistance information), application and/ Or the QoS of the QoS flow; or the load of the network function entity, the number of UEs; or the retention information of the QoS flow, etc.) together with specific algorithms (such as deep learning algorithms) for analysis to obtain MBS-related network data analysis results (ie, MBS analysis) Information), for example: statistics or prediction results of MBS user experience, network performance, or service quality continuity.
  • DNN Data Network Name
  • S-NSSAI Single Network Slice Selection Assistance Information, single network slice selection assistance information
  • QoS of the QoS flow or the load of the network function entity, the number of UEs; or the retention information of the QoS flow, etc.
  • specific algorithms such as deep learning algorithms
  • S503 Send the MBS analysis information to the second CN device, so that the second CN device adjusts the MBS parameters at least according to the MBS analysis information.
  • the NWDAF entity can analyze at least according to the MBS transmission mode to obtain MBS analysis information, and send the MBS analysis information to the second CN device, In this way, the second CN device can adjust the MBS parameters at least according to the MBS analysis information, thereby realizing the MBS analysis function of the NWDAF entity, and further ensuring more effective settings and optimization of network management strategies.
  • the second CN device is an AF entity, send the MBS analysis information to the AF entity, so that the AF entity can update the MBS service parameters according to the MBS analysis information; or,
  • the second CN device is an SMF entity, send the MBS analysis information to the SMF entity, so that the SMF entity updates MBS session management parameters according to the MBS analysis information; or,
  • the second CN device is an AMF entity, send the MBS analysis information to the AMF entity, so that the AMF entity updates MBS related parameters according to the MBS analysis information.
  • the NWDAF entity initiates an analysis subscription notification (AnalyticsSubscription_Notify) service to the NEF entity to send the MBS analysis information to the NWDAF entity.
  • the NEF entity, and the NEF entity sends the MBS analysis information to the AF entity by initiating an analysis subscription notification (AnalyticsSubscription_Notify) service to the AF entity.
  • the MBS analysis information may include the MBS transmission mode.
  • the NWDAF entity can obtain the MBS transmission mode adopted by the AN device in two ways, the SMF entity or the OAM entity, thereby improving the reliability of the NWDAF entity in obtaining the MBS transmission mode.
  • FIG. 6 is a flowchart of a method for reporting a transmission mode according to an embodiment of the disclosure.
  • the method is used for an AF entity, and the AF entity may be the first CN device in FIG. 2; as shown in FIG. 6, the method may include the following step:
  • the MBS transmission mode adopted by the AN device may include a transmission mode such as unicast, multicast, or broadcast.
  • the MBS transmission mode adopted by the AN device is used to characterize the transmission mode corresponding to the radio resources used to transmit MBS data between the AN device and the UE.
  • MBS service parameters may include MBS service area, MBS QoS parameters, and so on.
  • S603 Send the updated MBS service parameters to the PCF entity, so that the PCF entity updates the service MBS policy according to the MBS service parameters.
  • the PCF entity updates the MBS strategy according to the MBS service parameters, and sends the updated MBS strategy to the SMF entity.
  • the AMF entity forwards the MBS session management parameters to the AN device.
  • the AF entity requests the NWDAF entity to subscribe (or request once) the MBS-related network data analysis result through the NEF entity.
  • Target of Analytics Reporting can be set to TMGI, which means to perform statistics on UEs in the MBS group identified by the TMGI;
  • the SMF entity sends the MBS transmission mode to the NWDAF entity.
  • the AF entity updates the MBS service parameters according to the MBS analysis information, and sends the updated MBS service parameters to the PCF entity.
  • the PCF entity updates the MBS strategy according to the MBS analysis information and/or the MBS service parameters, and sends the updated MBS strategy to the SMF entity.
  • Fig. 10 is a block diagram of a transmission mode reporting device provided by an embodiment of the present disclosure.
  • the transmission mode device may be used in the first core network CN device; as shown in Fig. 10, the transmission mode reporting device may include:
  • the device provided in this embodiment can implement all the method steps that can be implemented in the above method embodiments, and can achieve the same beneficial effects. The same content and beneficial effects will be repeated.
  • the NWDAF receiving module 1310 is configured to receive the MBS transmission mode of the multicast broadcast service adopted by the AN device sent by the access network AN device; wherein the MBS analysis information includes the MBS transmission mode;
  • FIG. 15 is a schematic structural diagram of a network device provided by an embodiment of the present disclosure.
  • the network device 1500 may include at least one processor 1501, a memory 1502, at least one other user interface 1503, and a transceiver 1504 .
  • the various components in the network device 1500 are coupled together through the bus system 1505.
  • the bus system 1505 is used to implement connection and communication between these components.
  • the bus system 1505 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, various buses are marked as the bus system 1505 in FIG. 15.
  • the memory 1502 in the embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Synchronous DRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • Enhanced SDRAM Enhanced SDRAM, ESDRAM
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • Synchlink DRAM Synchronous Link Dynamic Random Access Memory
  • SLDRAM Direct Rambus RAM
  • the memory 1502 of the system and method described in various embodiments of the present disclosure is intended to include, but is not limited to, these and any other suitable types of memory.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present disclosure may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 1502, and the processor 1501 reads the information in the memory 1502, and completes the steps of the foregoing method in combination with its hardware.
  • the embodiments described in the present disclosure can be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in this application Electronic unit or its combination.
  • ASIC application specific integrated circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing equipment
  • PLD programmable Logic Device
  • PLD Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the network device in FIG. 15 may be an AN device.
  • the processor 1501 may be used for:
  • the determining the MBS transmission mode adopted by the AN device includes:
  • the transmission mode corresponding to the designated wireless resource is determined as the MBS transmission mode, and the designated wireless resource includes the PDU session or QoS flow of the MBS.
  • the MBS transmission mode of the multicast broadcast service adopted by the AN device is used to characterize the transmission mode corresponding to the radio resources used to transmit MBS data between the AN device and the user equipment UE.
  • the processor 1501 is further configured to:
  • the reporting of the MBS transmission mode to the first CN device includes:
  • the first message is sent to the first CN device, so that the first CN device determines the MBS transmission mode of the MBS session according to the MBS session identifier and the transmission mode identifier, or according to the MBS session
  • the identifier and the wireless resource information determine the MBS transmission mode of the MBS session.
  • the processor 1501 is further configured to:
  • the first message also includes a QoS flow identifier and/or a temporary mobility group identifier TMGI;
  • the processor 1501 is further configured to:
  • the MBS parameters include one or a combination of the following:
  • the processor 1501 is further configured to:
  • the processor 1501 is further configured to:
  • the first CN device is a session management function SMF entity, report the MBS transmission mode to the SMF entity; or,
  • the CN device provided in the embodiments of the present disclosure includes hardware structures and/or software modules corresponding to each function.
  • the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software.
  • the processor 1501 is further configured to:
  • the SMF entity receives a report that the transmission mode of one AN or all ANs corresponding to the specified MBS session has changed from unicast to multicast; or
  • the SMF entity receives a report that the transmission mode of one AN or all ANs under specified conditions has changed from unicast to multicast; wherein, the specified conditions include one or more of the specified MBS, the specified application, and the specified service stream. item.
  • the processor 1501 is further configured to:
  • the processor 1501 is further configured to:
  • the PCF entity provided by the embodiments of the present disclosure can implement the various processes implemented by the PCF entity in the foregoing embodiments. In order to avoid repetition, details are not described herein again.
  • the PCF entity can update the MBS policy at least according to the MBS transmission mode or MBS analysis information, thereby Achieved more effective settings and optimized network management strategies.
  • the PCF entity provided in the embodiments of the present disclosure includes hardware structures and/or software modules corresponding to each function.
  • the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software.
  • the MBS analysis information is sent to the second core network CN device, so that the second CN device adjusts MBS parameters at least according to the MBS analysis information.
  • the processor 1501 is further configured to:
  • the sending the MBS analysis information to the second CN device includes:
  • the second CN device is an SMF entity, send the MBS analysis information to the SMF entity, so that the SMF entity updates the MBS session management parameters according to the MBS analysis information; or,
  • the MBS analysis information is sent to the AMF entity, so that the AMF entity updates the MBS related parameters according to the MBS analysis information.
  • the processor 1501 is further configured to:
  • the NWDAF entity entity includes hardware structures and/or software modules corresponding to each function.
  • the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software.
  • the network device in FIG. 15 may be an AF entity.
  • the processor 1501 may be configured to:
  • the processor 1501 is further configured to:
  • the updated MBS service parameters are sent to the PCF entity, so that the PCF entity updates the service MBS policy according to the MBS service parameters.
  • the AF entity provided in the embodiments of the present disclosure can implement the various processes implemented by the AF entity in the foregoing embodiments, and in order to avoid repetition, details are not described herein again.
  • the AF entity can update the MBS service parameters at least according to the MBS transmission mode or MBS analysis information In this way, the function of the AF entity to update the MBS service parameters is realized, which further ensures a more effective setting and optimization of network management strategies.
  • the AF entity provided by the embodiments of the present disclosure includes hardware structures and/or software modules corresponding to each function.
  • the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be divided. It can be combined or integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual couplings or direct couplings or communication connections may be indirect couplings or communication connections between devices or units through some interfaces.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of a software functional unit.
  • the embodiments of the present disclosure also provide a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the methods provided in the foregoing embodiments, including:
  • the MBS transmission mode is reported to the first core network CN device, so that the first CN device at least determines the corresponding MBS parameter according to the MBS transmission mode.
  • the embodiments of the present disclosure also provide a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the computer program is implemented to perform the methods provided in the foregoing embodiments, including:
  • the corresponding MBS parameter is determined according to the MBS transmission mode.
  • the embodiments of the present disclosure also provide a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the computer program is implemented to perform the methods provided in the foregoing embodiments, including:
  • the MBS transmission mode is sent to the policy control function PCF entity or the network data analysis function NWDAF entity.
  • the embodiments of the present disclosure also provide a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the computer program is implemented to perform the methods provided in the foregoing embodiments, including:
  • the embodiments of the present disclosure also provide a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the computer program is implemented to perform the methods provided in the foregoing embodiments, including:
  • the MBS analysis information is sent to the second core network CN device, so that the second CN device adjusts MBS parameters at least according to the MBS analysis information.
  • the embodiments of the present disclosure also provide a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the computer program is implemented to perform the methods provided in the foregoing embodiments, including:
  • the MBS service parameters are updated.
  • the terminal provided in this embodiment can implement all the method steps that can be implemented in the above method embodiments, and can achieve the same beneficial effects. The same content and beneficial effects will be repeated.

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Abstract

Des modes de réalisation de la présente invention concernent un procédé de rapport de mode de transmission, un appareil, un dispositif et un support électronique. Ledit procédé de rapport de mode de transmission comprend : la détermination d'un mode de transmission de service de multidiffusion diffusion, MBS, utilisé par un dispositif de réseau d'accès, AN ; le rapport du mode de transmission MBS à un premier dispositif de réseau central, CN, de façon à permettre au premier dispositif CN de déterminer un paramètre MBS correspondant au moins selon le mode de transmission MBS. Un mode de réalisation de la présente invention permet ainsi d'obtenir une configuration plus efficace et une politique de gestion de réseau optimisée.
PCT/CN2021/088347 2020-04-24 2021-04-20 Procédé de rapport de mode de transmission, appareil, dispositif et support électronique WO2021213370A1 (fr)

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CN113965907B (zh) * 2021-11-17 2024-06-07 交控科技股份有限公司 业务配置方法用于轨道交通应用场景的、核心网设备以及存储介质

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