A dynamic networking method for a mobile communication system

Abstract

The application discloses a dynamic networking method of a mobile communication system. According to the running state of the mobile communication system, a unified business operation support system (BOSS) is configured to cooperate with the user subscription information, the user subscription information running state, the signaling routing strategy, the vehicle-mounted communication system networking mode and other information of the mobile communication system and the fixed deployment communication system, so as to realize the dynamic networking between the mobile communication system and the fixed deployment communication system, the flexible switching between different systems and the intercommunication of services between users of different communication systems. The BOSS system is arranged on the fixed network side, and the fixed network and the vehicle-mounted communication system share the BOSS. The application can realize that the user can access the fixed deployment network system when the vehicle-mounted system is turned off, and the user can re-access the vehicle-mounted communication system when the vehicle-mounted system is turned on, so as to provide flexible communication services for the user of the vehicle-mounted communication system and not to affect the normal service of the user of the fixed network system.

Description

Technical Field

[0001] This invention relates to the field of dynamic networking of broadband mobile communication systems, and to dynamic networking methods between vehicle-mounted mobile communication systems and fixed-deployment communication systems or between vehicle-mounted mobile communication systems. Background Technology

[0002] Mobile communication network services have become widely used in people's daily lives due to their mobility and convenience. With the rapid development of mobile communication technology, people are increasingly using mobile communication network services. While enjoying the convenience brought by mobile communication networks, the interoperability between communication systems with different deployment forms, as well as the switching between different systems in a dynamic environment, can also affect the user's network service experience.

[0003] Vehicle-mounted communication systems play a unique role in emergency scenarios due to their excellent mobile wireless communication capabilities. However, because available spectrum resources are limited, it is difficult for vehicle-mounted broadband mobile emergency networks to exclusively occupy dedicated frequency bands. Therefore, sharing spectrum resources between vehicle-mounted mobile networks and fixed deployment networks becomes an unavoidable use case. When a vehicle-mounted communication system enters a fixed network deployment area, it needs to be turned off to avoid interference with the fixed network, and the accompanying user terminal needs to switch to the fixed network to continue enjoying service. When the vehicle leaves the fixed network deployment area, the vehicle-mounted communication system needs to be turned on again, and the accompanying user terminal needs to switch back to the vehicle-mounted communication system to continue enjoying service. Figure 1 As shown, how to achieve dynamic networking between the dynamically changing in-vehicle communication system and the fixed network to meet the switching needs of vehicle users between different systems has become an urgent problem to be solved.

[0004] Existing broadband vehicle-mounted communication systems primarily aim to provide independent services to users in vehicles without fixed network coverage. They do not currently consider the dynamic shutdown of the vehicle-mounted communication system when it enters fixed network coverage, nor do they address the user's access to the fixed network when the vehicle-mounted communication system is dynamically shut down. Furthermore, they fail to account for the dynamic on / off status of the vehicle-mounted communication system and cannot resolve the interoperability issues between users in vehicles and those on fixed networks for individual and group calls. Therefore, they cannot achieve dynamic on / off status of the vehicle-mounted communication system, flexible switching between the vehicle-mounted communication system and the fixed network for users, or interoperability between users in vehicles and those on fixed networks.

[0005] Furthermore, during the execution of escort support activities, multiple vehicles need to temporarily form a convoy, with each vehicle equipped with accompanying personnel. A key challenge is how to achieve interoperability of individual and group calls between users of different vehicle communication systems to enable coordinated command and dispatch. During the escort process, abnormal situations or emergency tasks may occur, and one or more vehicles may leave the convoy to act independently. Therefore, each vehicle communication system within the convoy needs to independently serve its own accompanying users. A crucial issue then becomes how to achieve dynamic networking of multiple vehicle communication systems to allow accompanying users to switch between different systems and to ensure interoperability of communication services between users of different vehicle communication systems. Figure 2 As shown.

[0006] Current vehicle communication system solutions primarily consider how to provide independent regional mobile network services to users in a single vehicle environment. They do not address how to achieve interoperability of individual and group calls between users of different vehicle communication systems when multiple communication vehicles form a fleet. Furthermore, existing solutions cannot achieve dynamic networking of multiple vehicle communication systems, nor can they enable interoperability of group and individual calls between users of different vehicle communication systems when the vehicle communication system switches between single-vehicle mode and multi-vehicle cooperative mode. Summary of the Invention

[0007] To address the problems existing in the prior art, the present invention aims to provide a dynamic networking method between mobile communication systems and fixed communication systems, as well as a dynamic networking method between multiple vehicle-mounted communication systems. This invention provides a dynamic networking mechanism between mobile communication systems and fixed-deployment communication systems, and between multiple mobile communication systems, based on the collaboration of a unified business operation support system (BOSS). The unified business operation support system (BOSS+OSS) coordinates the configuration of user subscription information, user subscription status, signaling routing strategies, and vehicle-mounted communication system networking modes for both mobile and fixed-deployment communication systems according to the operational status of the mobile communication systems. This enables flexible switching of users between different systems and interoperability of services between users of different communication system types. The BOSS system is deployed on the fixed network side, and the fixed network and vehicle-mounted communication systems share a unified BOSS.

[0008] The technical solution of this invention is as follows:

[0009] A method for dynamic networking between a mobile communication system and a fixed communication system, comprising the following steps:

[0010] 1) Set up a unified business operation support system; the unified business operation support system configures the user subscription information of the vehicle communication system to the user subscription server of the fixed network according to the operating status of the vehicle system, and configures the user subscription information of the vehicle communication system to the user subscription server of the vehicle communication system.

[0011] 2) The network management agent (OAM-agent) of the vehicle communication system generates a request to turn the vehicle communication system on or off based on the perceived fixed network interference or user needs, and sends the request to the unified business operation support system.

[0012] 3) The unified business operation support system remotely turns the vehicle communication system on or off according to the request; then it generates a status update instruction based on the operating status of the vehicle communication system and sends it to the user subscription server in the fixed network.

[0013] 4) The user subscription server in the fixed network updates the status of the vehicle communication system user subscription information in the fixed network according to the received status update instruction; if the current status of the vehicle communication system is off, the status of the corresponding vehicle communication system user subscription information in the fixed network is set to on and the corresponding user is connected, otherwise it is set to off.

[0014] 5) The unified service operation support system determines the access signaling routing strategy for the corresponding vehicle user in the fixed network based on the operating status of the vehicle communication system; wherein, if the operating status of the vehicle communication system is off, the corresponding signaling routing strategy for the vehicle user in the fixed network is to address the fixed network subscription server; otherwise, the corresponding signaling routing strategy for the vehicle user in the fixed network is to address the vehicle communication system network subscription server; and the unified service operation support system determines the call signaling routing strategy for the corresponding vehicle user in the fixed network; wherein, if the operating status of the vehicle communication system is off, the corresponding signaling routing strategy for the vehicle user in the fixed network is to address the control plane functional unit (TCF) in the fixed network; otherwise, the corresponding signaling routing strategy for the vehicle user in the fixed network is to address the control plane functional unit (TCF) in the vehicle communication system network.

[0015] 6) The unified service operation support system sends an access signaling routing policy update instruction to the control plane functional unit in the fixed network;

[0016] 7) The Control plane Functional Unit (MME) in the fixed network updates the signaling routing policy information of the corresponding user according to the received access signaling routing policy update instruction;

[0017] 8) The unified service operation support system sends a call signaling routing policy update instruction to the control plane function (TCF) in the fixed network;

[0018] 9) In a fixed network, the Control Plane Functional Unit (TCF) updates the user call signaling routing policy information according to the received call signaling routing policy update instruction;

[0019] 10) The unified business operation support system determines the IP address information of the subscription server or control plane functional unit (TCF) of the vehicle user in the DNS or ENUM device in the fixed network according to the operating status of the vehicle communication system; if the vehicle communication system is in the off state, the IP address of the subscription server or control plane functional unit (TCF) of the vehicle user configured in the DNS or ENUM device is updated to the IP address of the corresponding function in the fixed network; otherwise, it is updated to the IP address of the corresponding function in the vehicle network.

[0020] 11) The control plane function unit of the vehicle communication system configures the routing addressing information of the control plane function unit according to the service identifier MSISDN of the called user, and performs signaling or service data interaction with the control plane function unit in the fixed network.

[0021] 12) When the user subscription server HSS / THSS in the fixed network receives the authentication data request from the vehicle user, it determines whether to allow the vehicle user to access based on the status of the user subscription information. If the subscription information status is closed, the vehicle user is denied access; otherwise, the user access authentication is performed according to the normal access process.

[0022] Furthermore, the user subscription server is HSS, THSS, or UDM.

[0023] Furthermore, the access signaling routing policy update instruction includes the user's identifier IMSI and the corresponding HSS / THSS / UDM IP address; the call signaling routing policy update instruction includes the user's service identifier MSISDN and the corresponding TCF / TMF IP address.

[0024] Furthermore, the unified service operation support system sends the call signaling routing policy update instruction to the control plane function (TCF) in the fixed network and the access signaling routing policy update instruction to the control plane function unit (MME) in the fixed network through the network management interface protocol.

[0025] Furthermore, the unified business operation support system can remotely turn the vehicle communication system on or off via network management commands.

[0026] Furthermore, in step 12), when the vehicle communication system is in the enabled state, the IP address information of the TCF / TMF corresponding to the service identifier MSISDN is set to the IP address of the control plane function unit in the vehicle communication system; when the vehicle communication system is in the disabled state, the IP address information of the control plane function unit corresponding to the service identifier MSISDN is set to the IP address of the control plane function unit in the fixed network.

[0027] A method for dynamic networking among multiple vehicle-mounted communication systems, comprising the following steps:

[0028] 1) Set up a unified business operation support system, select one vehicle in the fleet as the master vehicle, and the other vehicles as auxiliary vehicles; each vehicle in the fleet is equipped with an on-board base station and an on-board core network; the on-board base station and on-board core network of the master vehicle are all activated, and the on-board base station of the auxiliary vehicles is activated and connected to the master vehicle's core network; after the master vehicle or auxiliary vehicle leaves the fleet, it operates in single-vehicle mode, with all on-board base stations and on-board core networks activated, independently serving its own users in the system;

[0029] 2) The master vehicle reports the operating mode of the master vehicle's vehicle communication system to the unified business operation support system. The operating modes include: fleet master vehicle mode, fleet auxiliary vehicle mode, and single vehicle mode. Each vehicle's on-board system operates in only one mode at any given time.

[0030] 3) The unified business operation support system configures the vehicle communication system user subscription information of the main vehicle and each auxiliary vehicle into the user subscription server of the main vehicle;

[0031] 4) The on-board base station of a single vehicle A that leaves the convoy or a single vehicle that requests to join the convoy sends a heartbeat detection request packet to the control plane functional unit (MME) and service gateway (S-GW) of the master vehicle;

[0032] 5) The control surface function unit of the main vehicle and the S-GW respond to the heartbeat detection response packet of the single vehicle A or the vehicle base station of the single vehicle; if the single vehicle receives the heartbeat detection response packet of the main vehicle within a certain time interval, it enters the fleet or the single vehicle A restores the connection with the main vehicle and switches to the auxiliary vehicle mode; otherwise, it only needs to maintain the original operating mode.

[0033] 6) The auxiliary vehicle A reports to the unified business operation support system that the vehicle communication system is operating in the mode of a fleet auxiliary vehicle;

[0034] 7) The unified business operation support system configures the user subscription information status of the auxiliary vehicle A's vehicle communication system to be enabled in the user subscription server of the main vehicle's vehicle communication system, and the main vehicle's vehicle core network configures the vehicle base station equipment ID or IP address of the auxiliary vehicle A.

[0035] 8) The unified business operation support system configures the vehicle core network addressing information of the main vehicle to the vehicle base station of the auxiliary vehicle A; then the auxiliary vehicle A is switched to fleet auxiliary vehicle mode;

[0036] 9) The base station of each auxiliary vehicle sends a heartbeat detection request packet to the control surface functional unit and S-GW of the main vehicle;

[0037] 10) If any auxiliary vehicle i does not receive a heartbeat detection response packet from the master vehicle within a set time, it is determined that the self-organizing network connection between the auxiliary vehicle i and the master vehicle has failed, and steps 11) to 13) are performed.

[0038] 11) The auxiliary vehicle i reports to the unified business operation support system that the vehicle communication system is operating in single-vehicle independent mode;

[0039] 12) The unified business operation support system configures the user subscription information status of the auxiliary vehicle i's vehicle communication system to be closed in the user subscription server of the vehicle communication system of the main vehicle, and deletes the vehicle base station equipment ID or IP address of the auxiliary vehicle i from the vehicle core network of the main vehicle.

[0040] 13) The unified business operation support system configures the core network addressing information of the vehicle base station equipment of the auxiliary vehicle i as the IP addresses of the control plane functional unit MME, user plane functional unit S-GW / P-GW, UPF, and TMF of the auxiliary vehicle i; switches the auxiliary vehicle i to single-vehicle independent mode, and the single-vehicle base station accesses the vehicle core network and independently serves the users of the single vehicle i.

[0041] This invention mainly includes the following two aspects:

[0042] (1) Dynamic networking of vehicle-mounted communication system and fixed network system

[0043] This invention proposes a dynamic networking mechanism based on a unified service support management system, enabling users to flexibly switch between different communication systems and achieve cross-system service interoperability in a hybrid environment of vehicle-mounted communication systems and fixed network systems. The vehicle-mounted communication system and the fixed network communication system share the unified service support management system. Users register accounts on both the vehicle-mounted and fixed network systems, and both systems store user subscription information. At any given time, user subscription information is only active on one network. New parameters are added to the network subscription information to indicate the subscription status (active, deactivated). The unified service support management system determines the status of the vehicle user's subscription information in the fixed network based on the vehicle-mounted communication system's startup status. Furthermore, the unified service support system dynamically configures the vehicle user's signaling routing policy information for the control plane functions in the fixed network, and the IP address information of the vehicle user's control plane functions in the Domain Name System (DNS) or ENUM mapping device in the fixed network, based on the vehicle-mounted communication system's operating status. Before shutting down or starting up, the vehicle-mounted communication system reports changes in its operating status to the unified service support management system. Based on the operating status of the vehicle-mounted communication system, the unified business support management system updates the configuration information of relevant functions in the fixed network, thereby enabling users of the vehicle-mounted communication system to freely switch between the vehicle-mounted communication system and the fixed network system during the dynamic switching of the vehicle-mounted communication system.

[0044] By enhancing the in-vehicle communication system to report its operational status to the unified business support management system, and based on this status, the unified business support management system uses configuration commands to change the status of user subscription information, user signaling routing policy information, and IP address configuration information of control plane functions in the fixed communication network system. This allows users in the vehicle to freely switch to the fixed network communication system when the vehicle system is shut down. Based on this idea, this invention proposes a specific implementation scheme, such as... Figure 3 As shown.

[0045] In this solution, the in-vehicle communication system and the fixed network share a unified service support system (BOSS+BSS). Before starting or stopping, the in-vehicle communication system reports its upcoming operational status to the unified BOSS via an interface protocol with it. Based on business needs, the unified BOSS can also proactively start or stop the in-vehicle communication system through a network management protocol interface. Based on the in-vehicle communication system's operational status information, the unified BOSS determines the status of the in-vehicle user's subscription information in the fixed network and updates the user subscription status to the user subscription information server HSS / HSS / UDM in the fixed network via the network management interface. Simultaneously, the unified BOSS updates the in-vehicle user signaling routing policy to the control plane function MME / TCF in the fixed network, or updates the IP address information of the in-vehicle user-related user subscription server HSS / THSS / UDM and control plane function to the DNS / ENUM in the fixed network. This mechanism enables in-vehicle users to freely switch between the in-vehicle communication system and the fixed network system during the dynamic start-up or shutdown of the in-vehicle communication system, while also achieving interoperability of communication services between in-vehicle communication system users and fixed communication system users. MME is the mobility management entity in a 4G system, TCF (Trunking Control Function) is the trunking control plane function in a 4G-based trunking network, and TMF (Trunking Media Function) is the trunking media plane function.

[0046] (2) Dynamic networking of multi-vehicle communication systems

[0047] This paper proposes a dynamic networking mechanism based on a unified business support management system (BOSS+OSS) to enable flexible switching between different vehicle communication systems and cross-vehicle communication system service interoperability in a hybrid environment with multiple vehicle communication systems. Multiple vehicle communication systems share the unified business support management system. When multiple vehicle communication systems need to work collaboratively, one communication vehicle operates in fleet master mode, enabling all functions of the vehicle communication system (including base stations and core network). Other vehicles operate in fleet master mode, enabling only some functions of the vehicle communication system (including base stations). Users of multiple vehicle communication systems need to open accounts simultaneously in both the fleet master system and the fleet auxiliary system. The master system stores the subscription information of all users across all vehicle communication systems, while the auxiliary system only stores the subscription information of users within its own vehicle communication system. At any given time, user subscription information is only active in one vehicle communication system. A new parameter is added to the network subscription information to indicate the subscription status (active, passive). The unified business support management system determines the status (active, passive) of the auxiliary vehicle user subscription information in the master vehicle communication system based on the vehicle's operating mode (independent vehicle, fleet master, fleet auxiliary). The unified business support system changes the network topology and user subscription status of the vehicle communication systems in both the main vehicle and auxiliary vehicles based on the vehicle communication system's operating mode. Before changing the vehicle communication system's operating mode, the unified business support management system reports the change event to the unified business support management system. Based on the vehicle system's operating mode, the unified business support management system updates the relevant function configuration information of all vehicle communication systems in the fleet (main vehicle and auxiliary vehicles), thereby enabling users to switch between different vehicle communication systems during the change of operating mode.

[0048] By enhancing the network management agent function of the vehicle communication system to report the vehicle operation mode to the unified business support management system, and based on the operation mode of each vehicle communication system, the unified business support management system changes the user subscription information status in the main vehicle and the core network addressing information of the base station in the auxiliary vehicle through configuration commands. Based on this idea, this invention proposes another specific implementation scheme, such as... Figure 4 As shown.

[0049] In this scheme, multiple vehicle communication systems share a unified service support system (BOSS+BSS). When multiple vehicle communication systems form a fleet and work collaboratively, one vehicle communication system operates in the fleet master vehicle mode, while the other vehicle communication systems operate in the fleet auxiliary vehicle mode. Before changing the operating mode, the integrated vehicle network system reports the vehicle communication system operating mode change event to the unified BOSS through the interface protocol between the system and the BOSS. Based on business needs, the unified BOSS service can also proactively change the vehicle communication system operating mode through the network management protocol interface. Based on the vehicle communication system operating mode information, the unified BOSS determines the status of the auxiliary vehicle user's subscription information in the master vehicle system and updates the auxiliary vehicle user's subscription status to the user subscription information server HSS / HSS / UDM in the master vehicle communication system through the network management interface. Simultaneously, the unified BOSS updates the auxiliary vehicle user signaling routing policy to the control plane function MME / TCF in the master vehicle communication system and updates the core network equipment addressing information (MME, S-GW, etc. IP addresses) to the base station equipment in the auxiliary vehicle communication system. This mechanism enables users in the vehicle to freely switch between different in-vehicle communication systems during changes in the operating mode of the in-vehicle communication system, while also enabling communication services to be interconnected between users of multiple in-vehicle communication systems.

[0050] (1) The dynamic networking scheme between vehicle-mounted communication systems and fixed-deployment communication systems has the following key invention points:

[0051] The Unified Business Operation Support System (BOSS) configures in-vehicle user subscription information on both the Home Subscriber Server (HSS / THSS / UDM) in the in-vehicle communication system and the Home Subscriber Server (HSS / THSS / UDM) in the fixed communication system. However, at any given time, the user subscription information is only activated on either the in-vehicle communication system or the fixed-deployment communication system.

[0052] A new parameter is introduced into the user subscription information of existing vehicle-mounted or fixed-deployment communication systems to indicate the operational status of the user subscription information. This status information can be set to on or off. When on, the Home Subscriber Server (HSS / THSS / UDM) of the communication system treats the user as a user with valid subscription information. When off, the HSS / THSS / UDM treats the user as a user without valid subscription information.

[0053] The Unified Business Operation Support System (BOSS) determines whether to enable or disable the vehicle communication system based on the co-channel interference between the fixed-deployment communication system and the vehicle communication system, or on business needs, and enables or disables the vehicle communication system via network management commands. Furthermore, the vehicle communication system can also autonomously disable or enable itself based on locally detected co-channel interference information from the fixed network or on business needs, and will notify the BOSS of any changes in the vehicle communication system's operational status before enabling or disabling it.

[0054] Based on the operating status of the vehicle-mounted communication system, the BOSS system determines whether to enable or disable the vehicle-mounted user subscription information in the fixed-deployment communication system. Specifically, when the vehicle-mounted communication system starts up, BOSS uses network device configuration commands to set the user subscription information stored in the HSS / THSS / UDM of the fixed-deployment communication system to disabled. When the vehicle-mounted communication system is disabled, BOSS uses network device configuration commands to set the user subscription information of the HSS / THSS / UDM of the fixed-deployment communication system to enabled.

[0055] Based on the operating status of the vehicle communication system, the BOSS system determines the IP address configuration of the vehicle user's HSS / THSS in the DNS device of the communication system. Specifically, when the vehicle communication system starts up, BOSS uses configuration commands to configure the IP addresses of the vehicle user's HSS / THSS / UDM in the DNS server to the IP addresses of the vehicle communication system's HSS / THSS / UDM. When the vehicle communication system is shut down, BOSS uses configuration commands to configure the IP addresses of the vehicle user's HSS / THSS / UDM in the DNS to the IP addresses of the fixed-deployment communication system's HSS / THSS / UDM.

[0056] Based on the operating status of the vehicle communication system, the BOSS system determines the IP address configuration of the TCF / TMF corresponding to the MSISDN service number of the vehicle user in the ENUM device of the communication system. Specifically, when the vehicle communication system starts up, BOSS uses configuration commands to configure the IP address of the vehicle user's TCF / TMF in the ENUM server to the IP address of the vehicle communication system's TCF / TMF. When the vehicle communication system is shut down, BOSS uses configuration commands to configure the IP address of the vehicle user's TCF / TMF in the ENUM server to the IP address of the TCF / TMF in the fixed deployment communication system.

[0057] Based on the operating status of the vehicle communication system, the BOSS system determines the addressing policy information for the HSS / THSS / UDM of the vehicle-mounted users configured in the MME / AMF / SMF devices within the communication system. Specifically, when the vehicle communication system starts up, BOSS uses configuration commands to configure the HSS / THSS / UDM routing addressing information of the vehicle-mounted users (based on the user identifier IMSI) in the MME / AMF / SMF of the fixed communication system to the IP address of the vehicle communication system's HSS / THSS. When the vehicle communication system is shut down, BOSS uses configuration commands to configure the HSS / THSS / UDM routing addressing information of the vehicle-mounted users in the MME / AMF / SMF of the fixed communication system to the IP address of the fixed-deployment communication system's HSS / THSS / UDM.

[0058] Based on the operating status of the vehicle communication system, the BOSS system determines the addressing policy information of the TCF / TMF configured for vehicle users in the TCF device of the communication system. Specifically, when the vehicle communication system starts up, BOSS configures the routing addressing information of the TCF / TMF for vehicle user services (based on MSISDN) in the fixed-deployment communication system TCF to the IP address of the vehicle communication system TCF / TMF via configuration commands. When the vehicle communication system is shut down, BOSS configures the routing addressing information of the TCF / TMF for vehicle user services (based on user service identifier MSISDN) in the fixed-deployment communication system TCF to the IP address of the vehicle communication system TCF / TMF via configuration commands.

[0059] Based on the addressing policy information of the vehicle user's HSS / THSS / UDM configured in the BOSS, when the MME / AMF / SMF in the fixed deployment communication system receives a vehicle user attachment signaling message, it routes the vehicle user's signaling message to the corresponding communication system's HSS / THSS / UDM. When the vehicle communication system is off, based on the vehicle user identification information (IMSI), the MME / AMF / SMF in the fixed deployment communication system routes the vehicle user-related signaling messages to the fixed deployment system's HSS / THSS / UDM. When the vehicle communication system is on, based on the vehicle user identification information (IMSI), the MME / AMF / SMF in the fixed deployment system routes the vehicle user-related signaling messages to the vehicle communication system's HSS / THSS / UDM.

[0060] Based on the addressing policy information of the vehicle user's HSS / THSS / UDM configured in the BOSS, when the TCF in the fixed deployment communication system receives a signaling message from a vehicle user, it routes the signaling message to the corresponding TCF / TMF. When the vehicle communication system is off, based on the vehicle user service identification information (MSISDN), the TCF in the fixed deployment communication system routes the relevant signaling messages of the vehicle user to the TCF / TMF in the fixed deployment system. When the vehicle communication system is on, based on the vehicle user service identification information (MSISDN), the TCF in the fixed deployment communication system routes the relevant signaling messages of the vehicle user to the TCF / TMF in the vehicle communication system.

[0061] (2) The dynamic networking scheme for multi-vehicle communication systems has the following key inventions:

[0062] When multiple vehicle-mounted communication systems work together in a fleet, one vehicle is selected as the master vehicle and operates in fleet master vehicle mode, while the other vehicles are auxiliary vehicles and operate in fleet auxiliary vehicle mode, forming an integrated communication system with expanded coverage, jointly serving the users of each vehicle in the fleet.

[0063] The convoy's main vehicle operates in a complete communication system mode, with all onboard base stations and core networks activated. The main vehicle's core network serves not only its own base stations but also the base station equipment in the auxiliary vehicles.

[0064] When a vehicle enters a fleet or the wireless backhaul link between the auxiliary vehicle and the master vehicle is restored, the vehicle communication system sends an operating mode change notification to the Unified Business Operation Support System (BOSS) indicating that the auxiliary vehicle is about to enter fleet auxiliary vehicle mode. This means the auxiliary vehicle only operates its onboard base station and not its own onboard core network. The auxiliary vehicle's base station equipment connects to the master vehicle's core network via the inter-vehicle wireless backhaul link to form a complete integrated communication system. Conversely, when the wireless backhaul link between the auxiliary vehicle and the master vehicle is abnormal, or when the auxiliary vehicle actively leaves the fleet, the auxiliary vehicle sends an operating mode change notification to the Unified Business Operation Support System (BOSS) indicating that the master vehicle is about to enter independent vehicle operation mode.

[0065] The unified business operation support system (BOSS) configures auxiliary vehicle user subscription information in both the main vehicle communication system's HSS / THSS and the auxiliary vehicle communication system's HSS / THSS. However, at any given time, the auxiliary vehicle's user subscription information is only activated in one of the main vehicle communication system or the auxiliary vehicle communication system.

[0066] When multiple vehicle-mounted communication systems work collaboratively, the Unified Service Operation Support System (BOSS) uses configuration commands to set the subscription status of auxiliary vehicle users in the HSS / THSS on the main vehicle to "activated," and the main vehicle's core network treats the auxiliary vehicle users as legitimate users of its system. Furthermore, BOSS uses configuration commands to configure the core network functions MME and XGW corresponding to the base station equipment on the auxiliary vehicle with the IP addresses of the main vehicle's core network equipment MME and XGW.

[0067] The primary and secondary vehicles use a heartbeat mechanism to detect the status of the wireless backhaul link between them. Specifically, the secondary vehicle's eNB sends a heartbeat request packet to the primary vehicle's MME and XGW core network. Upon receiving the heartbeat request packet, the primary vehicle's core network equipment responds with a heartbeat response packet. If the secondary vehicle does not receive a heartbeat response from the primary vehicle within a certain time, it considers the wireless backhaul connection between it and the primary vehicle to be lost; otherwise, the secondary vehicle considers the wireless backhaul link with the primary vehicle to be normal.

[0068] When the auxiliary vehicle is about to leave the fleet and enter independent operation mode, the BOSS uses configuration commands to configure the core network MME and XGW corresponding to the base station equipment on the auxiliary vehicle with the IP addresses of the auxiliary vehicle's core network MME and XGW. In addition, the BOSS uses configuration commands to set the subscription information status of the auxiliary vehicle users in the HSS / THSS on the master vehicle to "off", so the master vehicle's core network no longer recognizes the auxiliary vehicle users as legitimate users of this system.

[0069] The advantages of this invention are as follows:

[0070] This invention utilizes a unified business operation support system to collaboratively configure user subscription information, user subscription status, signaling routing strategies, and vehicle-mounted communication system networking modes for both the mobile communication system (i.e., the vehicle-mounted communication system) and the fixed-deployment communication system based on the operational status of the mobile communication system. This enables flexible switching between different systems and interoperability of services between users of different communication system types. Furthermore, it allows users of the vehicle-mounted communication system to access the fixed-deployment network system when the vehicle-mounted system is off, and to reconnect to the vehicle-mounted communication system when the vehicle-mounted system is on, thus providing flexible communication services to users of the vehicle-mounted communication system without affecting the normal services of users of the fixed-deployment network system. Attached Figure Description

[0071] Figure 1 This is for dynamic networking scenarios of vehicle-mounted integrated communication systems and fixed network systems.

[0072] Figure 2 This is for a dynamic networking scenario of multiple vehicle-mounted communication systems.

[0073] Figure 3 This is a diagram illustrating the dynamic networking architecture of vehicle-mounted mobile networks and fixed networks.

[0074] Figure 4 This is a diagram of the dynamic networking architecture for a multi-vehicle communication system.

[0075] Figure 5 This is a flowchart illustrating the dynamic networking process between the vehicle-mounted communication system and the fixed network system.

[0076] Figure 6 This is a dynamic networking flow diagram among multiple vehicle-mounted communication systems. Detailed Implementation

[0077] The present invention will now be described in further detail with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0078] (1) Specific implementation method of dynamic networking between vehicle communication system and fixed network system

[0079] Dynamic networking methods between vehicle-mounted communication systems and fixed network systems, such as Figure 5 As shown, the main steps are as follows:

[0080] 1) The unified business operation support system configures the vehicle communication system user subscription information into the user subscription server HSS / THSS / UDM in the fixed network.

[0081] 2) The unified business operation support system configures the user subscription information of the vehicle communication system in the user subscription server HSS / THSS / UDM of the vehicle communication system.

[0082] 3) Based on the perceived fixed network interference or user needs, the vehicle communication system's network management OAM-agent agent decides to enable or disable the vehicle communication system.

[0083] 4) Before enabling or disabling, the vehicle communication system's network management OAM-agent agent reports the vehicle communication system's operating status change event to the unified business operation support system, i.e., enabling or disabling.

[0084] 5) Based on the operating status of the vehicle-mounted communication system, the unified business operation support system determines the status of the vehicle-mounted communication system user subscription information in the fixed network. If the vehicle-mounted communication system is turned off, the vehicle user's subscription information in the fixed network is in the "on" state; otherwise, it is in the "off" state.

[0085] 6) The unified business operation support system updates the status of user subscription information in the user subscription server HSS / THSS / UDM in the fixed network through the network management interface protocol, i.e., whether it is turned on or off.

[0086] 7) Upon receiving the instruction from the BOSS, the user subscription servers HSS / THSS / UDM in the fixed network update the user subscription information status, enabling or disabling it. If the status is enabled, the HSS processes the user's access process according to normal user subscription information. If the status is disabled, the HSS processes the user's access process as if the user subscription information does not exist.

[0087] 8) The user subscription server HSS / THSS / UDM in the fixed network notifies BOSS that the configuration information has been successfully received via a response message.

[0088] 9) Based on the operating status of the vehicle communication system, the unified business operation support system determines the signaling routing strategy for vehicle user subscription information in the fixed network. If the vehicle communication system is shut down, the signaling routing strategy for vehicle users in the fixed network is to address the fixed network subscription server; otherwise, the signaling routing strategy for vehicle users in the fixed network is to address the vehicle communication system network subscription server.

[0089] 10) The unified business operation support system updates the access signaling routing policy of the control plane function MME in the fixed network for vehicle users through the network management interface protocol, namely the HSS / THSS / UDM routing policy, including the user's identifier IMSI and the corresponding HSS / THSS / UDM IP address;

[0090] 11) Upon receiving the instruction from the BOSS, the MME in the fixed network updates the user's access signaling routing policy information;

[0091] 12) In a fixed network, the Control plane function MME notifies the BOSS that the configuration information has been successfully received by sending a response message;

[0092] 13) The unified business operation support system updates the TCF / TMF signaling routing policy for vehicle users in the fixed network control plane function TCF through the network management interface protocol, including the user's service identifier MSISDN and the corresponding TCF / TMF IP address; for example, when the vehicle system is on, the IP address information of the TCF / TMF corresponding to the vehicle system user service identifier MSISDN is set to the IP address of the vehicle system TCF / TMF, and when the vehicle system is off, the IP address information of the TCF / TMF corresponding to the vehicle system user service identifier MSISDN is set to the IP address of the fixed network system TCF / TMF;

[0093] 14) Upon receiving the instruction from the BOSS, the Control Plane Function (TCF) in the fixed network updates the user call signaling routing policy information; the instruction information sent by the BOSS to the TCF in the fixed network includes the MSISDN number (or MSISDN number range) of the vehicle user service identifier and the IP address of the corresponding vehicle communication system TCF.

[0094] 15) In a fixed network, the Control Plane Function (TCF) notifies the BOSS that the configuration information has been successfully received by sending a response message;

[0095] 16) Based on the operating status of the vehicle-mounted communication system, the unified business operation support system determines the IP address information of the subscription server or control plane function for vehicle-mounted users in the DNS or ENUM devices in the fixed network. If the vehicle-mounted communication system is shut down, the IP address of the subscription server or control plane function for vehicle-mounted users configured in the DNS or ENUM devices is the IP address of the corresponding function in the fixed network; otherwise, it is the IP address of the corresponding function in the vehicle-mounted network.

[0096] 17) Upon receiving the instruction from BOSS, the DNS or ENUM in the fixed network updates the IP address information of the subscription server HSS / THSS / UDM or control plane function TCF / TMF related to the vehicle user; the configuration instruction sent by BOSS to the fixed network DNS includes: the vehicle system user identifier IMSI and the corresponding IP address of the HSS / THSS; the configuration instruction sent by BOSS to the fixed network ENUM includes: the vehicle system user service identifier MSISDN and the corresponding IP address of the TCF / TMF.

[0097] 18) In a fixed network, the DNS or ENUM device notifies the BOSS that the configuration information has been successfully received by sending a response message.

[0098] 19) After the user terminal of the vehicle communication system is attached to the vehicle communication system, it interacts with the TCF / TMF of the vehicle communication system for signaling or service, and initiates service calls to the fixed network user terminal.

[0099] 20) The TCF / TMF in the core network of the vehicle communication system locates the called user's TCF / TMF based on the called user's service identifier MSISDN and the configured TCF / TMF routing addressing information, and exchanges signaling / service data with the TCF / TMF in the fixed deployment network;

[0100] 21) After the fixed communication system user terminal is attached to the fixed deployment network communication system, it performs signaling or service interaction with the fixed deployment communication system's TCF / TMF and receives service calls from the vehicle network user terminal.

[0101] Steps 3)-4) above can also be achieved using the following methods:

[0102] The vehicle communication system's network management OAM-agent reports the detected fixed network interference to the unified business operation support system's vehicle communication system; then the unified business operation support system decides to turn the vehicle communication system on or off, and remotely turns the vehicle communication system on or off via network management commands.

[0103] (2) Specific implementation method of dynamic networking among multiple vehicle communication systems

[0104] The main steps for dynamic networking among multiple vehicle-mounted communication systems are as follows:

[0105] 1) The lead vehicle in the fleet reports the operating mode of the vehicle's onboard communication system to the BOSS of the unified business operation support system, i.e., the lead vehicle of the fleet;

[0106] 2) BOSS saves the operating mode of the vehicle system;

[0107] 3) The BOSS configures the user subscription information of the vehicle communication system (user subscription information of the auxiliary vehicle's vehicle communication system and user subscription information of the main vehicle's vehicle communication system) in the user subscription server HSS / THSS / UDM of the fleet's main vehicle.

[0108] 4) The base station of the auxiliary vehicle or single vehicle in the fleet sends a heartbeat detection request packet to the core network equipment MME and S-GW of the main vehicle; MME is the mobility management entity, a control plane function in the 4G core network; S-GW is the service gateway, a user plane function in the 4G core network; P-GW is the packet data network gateway, a user plane function in the 4G core network; SGW+P-GW=XGW.

[0109] 5) The core network equipment MME and S-GW of the fleet's main vehicle respond to the heartbeat detection response packet from the base station of the auxiliary vehicle or individual vehicle;

[0110] 6) A single vehicle enters the fleet or a fleet auxiliary vehicle reconnects with the main workshop;

[0111] 7) The fleet auxiliary vehicles report the vehicle communication system operation mode to the unified business operation support system BOSS, i.e., the fleet auxiliary vehicles;

[0112] 8) The BOSS configures the user subscription information status of the auxiliary vehicle system in the user subscription server HSS / THSS / UDM of the vehicle communication system of the fleet master vehicle (set to open), and at the same time configures the auxiliary vehicle base station device ID or IP address in the master vehicle core network;

[0113] 9) The BOSS configures the core network addressing information for the base station equipment of the vehicle communication system of the auxiliary vehicles in the fleet, that is, sets the core network configuration information of the base station of the auxiliary vehicle to the IP address of the core network equipment MME and S-GW of the main vehicle.

[0114] 10) The auxiliary vehicles in the fleet switch to fleet auxiliary vehicle mode;

[0115] 11) The base station of the auxiliary vehicle in the fleet sends a heartbeat detection request packet to the MME and S-GW of the main vehicle core network equipment;

[0116] 12) If the auxiliary vehicle i does not receive a heartbeat detection response packet from the master vehicle within a certain period of time, it is considered that the self-organizing network connection between the auxiliary vehicle i and the master vehicle has failed; proceed to steps 13 to 16);

[0117] 13) The fleet auxiliary vehicle i reports the vehicle communication system operation mode to the unified business operation support system BOSS, i.e., the single vehicle independent mode;

[0118] 14) The BOSS configures the user subscription information status of the auxiliary vehicle i's vehicle communication system in the user subscription server HSS / THSS / UDM of the vehicle communication system of the main vehicle of the fleet (set to off), and deletes the auxiliary vehicle base station device ID or IP address from the main vehicle core network.

[0119] 15) The BOSS configures the core network addressing information to the base station equipment of the vehicle communication system of the auxiliary vehicle i in the fleet, that is, sets the core network addressing information to the IP address of the auxiliary vehicle i's own core network equipment MME and S-GW.

[0120] 16) The fleet auxiliary vehicle i switches to single-vehicle independent mode to independently serve users of this system.

[0121] In summary, this invention discloses a dynamic networking mechanism for cross-communication systems based on a unified operation and maintenance management system, enabling dynamic networking between vehicle-mounted mobile communication systems and fixed-deployment communication systems, as well as among multiple vehicle-mounted communication systems, and two specific implementation schemes. This scheme is applicable to 4G / 5G and broadband trunking communication systems.

[0122] Although specific embodiments of the invention have been disclosed for illustrative purposes and to aid in understanding and implementing the invention, those skilled in the art will understand that various substitutions, variations, and modifications are possible without departing from the spirit and scope of the invention and the appended claims. Therefore, the invention should not be limited to the content disclosed in the preferred embodiments, and the scope of protection claimed by the invention is defined by the claims.

Claims

1. A method for dynamic networking between a mobile communication system and a fixed communication system, comprising the following steps: 1) Set up a unified business operation support system; The unified business operation support system configures the user subscription information of the vehicle communication system to the user subscription server of the fixed network according to the operating status of the vehicle system, and configures the user subscription information of the vehicle communication system to the user subscription server of the vehicle communication system. 2) The network management agent (OAM-agent) of the vehicle communication system generates a request to turn the vehicle communication system on or off based on the perceived fixed network interference or user needs, and sends the request to the unified business operation support system. 3) The unified business operation support system remotely turns the vehicle communication system on or off according to the request; then it generates a status update instruction based on the operating status of the vehicle communication system and sends it to the user subscription server in the fixed network. 4) The user subscription server in the fixed network updates the status of the vehicle communication system user subscription information in the fixed network according to the received status update instruction; If the vehicle communication system is currently off, then the corresponding vehicle communication system user subscription information in the fixed network will be set to on and the corresponding user will be connected; otherwise, it will be set to off. 5) The unified service operation support system determines the access signaling routing strategy for the corresponding vehicle user in the fixed network based on the operating status of the vehicle communication system; wherein, if the operating status of the vehicle communication system is off, the corresponding signaling routing strategy for the vehicle user in the fixed network is to address the fixed network subscription server; otherwise, the corresponding signaling routing strategy for the vehicle user in the fixed network is to address the vehicle communication system network subscription server; and the unified service operation support system determines the call signaling routing strategy for the corresponding vehicle user in the fixed network; wherein, if the operating status of the vehicle communication system is off, the corresponding signaling routing strategy for the vehicle user in the fixed network is to address the control plane functional unit (TCF) in the fixed network; otherwise, the corresponding signaling routing strategy for the vehicle user in the fixed network is to address the control plane functional unit (TCF) in the vehicle communication system network. 6) The unified service operation support system sends an access signaling routing policy update instruction to the control plane functional unit in the fixed network; 7) The Control plane Functional Unit (MME) in the fixed network updates the signaling routing policy information of the corresponding user according to the received access signaling routing policy update instruction; 8) The unified service operation support system sends a call signaling routing policy update instruction to the control plane functional unit (TCF) in the fixed network; 9) In a fixed network, the Control Plane Functional Unit (TCF) updates the user call signaling routing policy information according to the received call signaling routing policy update instruction; 10) The unified business operation support system determines the IP address information of the subscription server or control plane functional unit (TCF) of the vehicle user in the DNS or ENUM device in the fixed network according to the operating status of the vehicle communication system; if the vehicle communication system is in the off state, the IP address of the subscription server or control plane functional unit (TCF) of the vehicle user configured in the DNS or ENUM device is updated to the IP address of the corresponding function in the fixed network; otherwise, it is updated to the IP address of the corresponding function in the vehicle network. 11) The control plane function unit of the vehicle communication system configures the routing addressing information of the control plane function unit according to the service identifier MSISDN of the called user, and performs signaling or service data interaction with the control plane function unit in the fixed network. 12) When the user subscription server in the fixed network receives the authentication data request from the vehicle user, it determines whether to allow the vehicle user to access based on the status of the user subscription information. If the subscription information status is closed, the vehicle user is denied access; otherwise, the user access authentication is performed according to the normal access process.

2. The method according to claim 1, characterized in that, The user subscription server is HSS, THSS, or UDM.

3. The method according to claim 2, characterized in that, The access signaling routing policy update instruction includes the user's identifier IMSI and the corresponding HSS / THSS / UDM IP address; the call signaling routing policy update instruction includes the user's service identifier MSISDN and the corresponding TCF / TMF IP address.

4. The method according to claim 1, characterized in that, The unified service operation support system sends the call signaling routing policy update instruction to the control plane function unit (TCF) in the fixed network and the access signaling routing policy update instruction to the control plane function unit (MME) in the fixed network through the network management interface protocol.

5. The method according to claim 1, characterized in that, The unified business operation support system remotely turns the vehicle communication system on or off via network management commands.

6. The method according to claim 1, characterized in that, In step 12), when the vehicle communication system is in the enabled state, the IP address information of the TCF / TMF corresponding to the service identifier MSISDN is set to the IP address of the control plane function unit in the vehicle communication system; when the vehicle communication system is in the disabled state, the IP address information of the control plane function unit corresponding to the service identifier MSISDN is set to the IP address of the control plane function unit in the fixed network.

7. A method for dynamic networking among multiple vehicle-mounted communication systems, comprising the following steps: 1) Set up a unified business operation support system, select one vehicle in the fleet as the main vehicle, and the other vehicles as auxiliary vehicles; Each vehicle in the fleet is equipped with an on-board base station and an on-board core network; the on-board base station and on-board core network of the main vehicle are all activated, and the on-board base station of the auxiliary vehicle is activated and connected to the core network of the main vehicle; after the main vehicle or auxiliary vehicle leaves the fleet, it operates as a single vehicle in single-vehicle mode, with all on-board base stations and on-board core networks activated, independently serving its own users. 2) The master vehicle reports the operating mode of the master vehicle's vehicle communication system to the unified business operation support system. The operating modes include: fleet master vehicle mode, fleet auxiliary vehicle mode, and single vehicle mode. Each vehicle's on-board system operates in only one mode at any given time. 3) The unified business operation support system configures the vehicle communication system user subscription information of the main vehicle and each auxiliary vehicle into the user subscription server of the main vehicle; 4) The on-board base station of a single vehicle A that leaves the convoy or a single vehicle that requests to join the convoy sends a heartbeat detection request packet to the control plane functional unit (MME) and service gateway (S-GW) of the master vehicle; 5) The control surface function unit of the main vehicle and the S-GW respond to the heartbeat detection response packet of the single vehicle A or the vehicle base station of the single vehicle A; if the single vehicle A receives the heartbeat detection response packet of the main vehicle within a certain time interval, it enters the fleet or the single vehicle A restores the connection with the main vehicle and switches to the auxiliary vehicle mode; otherwise, it only needs to maintain the original operating mode. 6) Vehicle A reports to the unified business operation support system that the vehicle communication system is operating in fleet auxiliary vehicle mode; 7) The unified business operation support system configures the user subscription information status of the auxiliary vehicle A's vehicle communication system to be enabled in the user subscription server of the main vehicle's vehicle communication system, and the main vehicle's vehicle core network configures the vehicle base station equipment ID or IP address of the auxiliary vehicle A. 8) The unified business operation support system configures the vehicle core network addressing information of the main vehicle to the vehicle base station of the auxiliary vehicle A; then the auxiliary vehicle A is switched to fleet auxiliary vehicle mode; 9) The base station of each auxiliary vehicle sends a heartbeat detection request packet to the control surface functional unit and S-GW of the main vehicle; 10) If any auxiliary vehicle i does not receive a heartbeat detection response packet from the master vehicle within a set time, it is determined that the self-organizing network connection between the auxiliary vehicle i and the master vehicle has failed and it switches to single-vehicle mode, and steps 11) to 13) are performed; otherwise, the original operating mode is maintained. 11) The auxiliary vehicle i reports to the unified business operation support system that the vehicle communication system is operating in single-vehicle independent mode; 12) The unified business operation support system configures the user subscription information status of the auxiliary vehicle i's vehicle communication system to be closed in the user subscription server of the vehicle communication system of the main vehicle, and deletes the vehicle base station equipment ID or IP address of the auxiliary vehicle i from the vehicle core network of the main vehicle. 13) The unified business operation support system configures the core network addressing information of the vehicle base station equipment of the auxiliary vehicle i as the IP addresses of the control plane functional unit MME, user plane functional unit S-GW / P-GW, and TMF of the auxiliary vehicle i; switches the auxiliary vehicle i to single-vehicle independent mode, and the single-vehicle base station accesses the vehicle core network and independently serves the users of the single-vehicle i.

8. The method according to claim 7, characterized in that, The control plane functional units include the Mobility Management Entity (MME) and the Trunking Control Plane Function (TCF). The user plane functional units include the Serving Gateway (S-GW), the Packet Gateway (P-GW), the User Plane Function (UPF), and the Trunking Media Plane Function (TMF).

9. The method according to claim 7, characterized in that, The user subscription server is HSS, THSS, or UDM.

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