CN216905314U - 5G broadband trunking communication system - Google Patents

Abstract

The application provides a 5G broadband trunking communication system, includes: 5G terminal equipment, 5G wireless access network equipment and 5G core network equipment group, wireless access network equipment includes: the first gNB is used for providing access service for the data terminal, and the second gNB is used for providing access service for the data terminal and the cluster terminal; the core network device group comprises at least one of the following core network devices: the system comprises an eUDM device, an eAMF device, an AUSF device, an SMF device, a PCF device, a UPF device, an NSSF device, a TMF device and a TCF device, wherein the eUDM device comprises a first UDM device and a second UDM device, the first UDM device is used for managing target data corresponding to a 5G data terminal, and the second UDM device is used for managing target data corresponding to a 5G cluster terminal. The 5G broadband trunking communication system provides 5G communication service for users.

Description

5G broadband trunking communication system

Technical Field

The application relates to the technical field of broadband trunking communication, in particular to a 5G broadband trunking communication system.

Background

Broadband trunking communication (B-TrunkC) is a "LTE digital transmission + trunked voice communication" private network trunking system standard based on TD-LTE established by the broadband trunking industry alliance organization. The broadband trunking system generally includes 5G core network devices, 5G terminal devices, and 5G radio access network devices, where the 5G terminal devices may access the 5G radio access network devices to implement communication through the 5G radio access network devices and the 5G core network devices.

In the prior art, a 4G broadband trunking communication system is mature, but no architecture of a 5G broadband trunking communication system exists yet, so as to implement 5G broadband trunking communication.

SUMMERY OF THE UTILITY MODEL

The application provides a 5G broadband trunking communication system to provide 5G broadband trunking communication to users. The 5G broadband trunking communication system comprises: the system comprises 5G terminal equipment, 5G wireless access network equipment and a 5G core network equipment group, wherein the 5G wireless access network equipment is respectively communicated with the 5G terminal equipment and the 5G core network equipment group;

wherein the 5G terminal equipment comprises at least one of the following: the system comprises a 5G data terminal for carrying out packet communication and a 5G cluster terminal for carrying out cluster communication;

the 5G radio access network device comprises at least one of: the first gNB is used for providing access service for the 5G data terminal, and the second gNB is used for providing access service for the 5G data terminal and the 5G cluster terminal;

the 5G core network equipment group comprises at least one of the following 5G core network equipment: the system comprises evolution unified data management (eUDM) equipment, evolution access and mobile management function (eAMF) equipment, authentication server function (AUSF) equipment, Session Management Function (SMF) equipment, control policy function (PCF) equipment, User Plane Function (UPF) equipment, Network Slice Selection Function (NSSF) equipment, Trunking Media Function (TMF) equipment and Trunking Control Function (TCF) equipment, wherein the eUDM equipment comprises first UDM equipment and second UDM equipment, the first UDM equipment is used for managing target data corresponding to the 5G data terminal, the second UDM equipment is used for managing the target data corresponding to the 5G trunking terminal, and the target data comprises subscription data, user state data and service state data.

Optionally, the signaling message between the AMF device and the TCF device includes at least one of: a cluster signaling message TSM, a multicast session management message, the signaling message between the AMF device and the 5G radio access network device comprising: multicast session management messages.

Optionally, the 5G data terminal accesses the first gNB through a Uu interface, or accesses the second gNB through a Uu-T interface, and the 5G cluster terminal accesses the second gNB through a Uu-T interface.

Optionally, the first gNB communicates with the 5G core network device group through an N2 interface or an N3 interface, and the second gNB communicates with the 5G core network device group through an N2-T interface or an N3-T interface.

Any two of the NSSF device, the PCF device, the first UDM device, the second UDM device, the AUSF device, the eAMF device, the SMF device, and the TCF device are all in communication, the NSSF device provides an Nnssf interface, the PCF device provides an Npcf interface, the first UDM device provides a Nudm interface, the second UDM device provides an Ntudm interface, the AUSF device provides a Nausf interface, the eAMF device provides a Namf interface, the SMF device provides an Nsmf interface, the TCF device provides an Ntcf interface, the UPF device and the SMF device communicate via an N4 interface, the UPF device and the TMF device communicate via an N6 interface, the eAMF device communicates with the 5G radio access network device via an N2T interface, the TMF device communicates with the 5G radio access network device via an N3T interface, and the UPF device communicates with the 5G radio access network device via an N3 interface, the 5G terminal device communicates with the eAMF device through an N1 interface.

Optionally, the number of the 5G core network device groups is multiple, different 5G core network device groups correspond to different public land mobile network PLMN codes, and the eAMF devices belonging to different 5G core network device groups communicate with each other through an N14 interface.

Optionally, the eAMF device and the AUSF device belonging to different 5G core network device groups communicate through an N12 interface.

Optionally, the SMF devices belonging to different 5G core network device groups communicate with each other through an N16 interface.

Optionally, the UPF devices belonging to different 5G core network device groups communicate with each other through an N9 interface.

Optionally, the eUDM device is shared between the 5G core network device groups, and the eAMF device in each 5G core network device group communicates with the first UDM device through an N8 interface.

Optionally, the TCF device in each 5G core network device group communicates with the second UDM device through a TC1 interface.

Optionally, each 5G core network device group includes a roaming place 5G core network device group and a home place 5G core network device group, where the roaming place 5G core network device group and the home place 5G core network device group both have independent eUDM devices, an eAMF device in the roaming place 5G core network device group communicates with a first UDM device in the home place 5G core network device group through an N8 interface, and a TCF device in the home place 5G core network device group communicates with a second UDM device in the home place 5G core network device group through a TC1 interface.

Optionally, the TCF device in the home 5G core network device group communicates with the TCF in the roaming site 5G core network device group through a TC2 interface.

Optionally, the 5G radio access network device is shared among different 5G core network device groups.

Optionally, the system further includes at least one 4G core network device group, and the TCF/TMF device of the 4G core network device group and the TCF/TMF device of the 5G core network device group communicate with each other through a TC2 interface.

Optionally, the first UDM device in the 5G core network device group communicates with the eMME device in the 4G core network device group through an S6a interface, the SMF device in the 5G core network device group and the xGW device in the 4G core network device group communicate through an S5-C interface, the UDF equipment in the 5G core network equipment group and the xGW equipment in the 4G core network equipment group communicate through an S5-U interface, the first UDM device in the 5G core network device group communicates with the SMF device in the 5G core network device group via an N10 interface, the AMF device in the 5G core network device group and the SMF device in the 5G core network device group communicate through an N11 interface, and the xGW equipment in the 4G core network equipment group and the eNB corresponding to the 4G core network equipment group communicate through an S1-C interface.

Optionally, the eMME device in the 4G core network device group is communicatively connected to the eAMF device in the 4G core network device group through an N26 interface.

Optionally, the SMF device in the 5G core network device group and the PCF in the 5G and 5G core network device groups are communicatively connected through an N7 interface, and the SMF device in the 5G core network device group and the UPF device in the 5G core network device group are communicatively connected through an N4 interface.

The application provides a 5G broadband trunking communication system, this system includes: the system comprises 5G terminal equipment, 5G wireless access network equipment and a 5G core network equipment group, wherein the 5G wireless access network equipment is respectively communicated with the 5G terminal equipment and the 5G core network equipment group; wherein the 5G terminal equipment comprises at least one of the following: the system comprises a 5G data terminal for carrying out packet communication and a 5G cluster terminal for carrying out cluster communication; the 5G radio access network device comprises at least one of: the first gNB is used for providing access service for the 5G data terminal, and the second gNB is used for providing access service for the 5G data terminal and the 5G cluster terminal; the 5G core network equipment group comprises at least one of the following 5G core network equipment: the system comprises evolution unified data management (eUDM) equipment, evolution access and mobile management function (eAMF) equipment, authentication server function (AUSF) equipment, Session Management Function (SMF) equipment, control policy function (PCF) equipment, User Plane Function (UPF) equipment, Network Slice Selection Function (NSSF) equipment, Trunking Media Function (TMF) equipment and Trunking Control Function (TCF) equipment, wherein the eUDM equipment comprises first UDM equipment and second UDM equipment, the first UDM equipment is used for managing target data corresponding to the 5G data terminal, the second UDM equipment is used for managing the target data corresponding to the 5G trunking terminal, and the target data comprises subscription data, user state data and service state data. The embodiment of the application can provide 5G communication service for users through the 5G broadband trunking communication system.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic diagram of a 4G broadband trunking communication system architecture provided by the prior art and including a 4G core network device group;

fig. 2 is a schematic diagram of a 4G broadband trunking communication system architecture provided by the prior art and including two 4G core network device groups;

fig. 3 is a schematic diagram of a 4G radio access network device shared by different 4G core network device groups provided by the prior art;

fig. 4 is a schematic diagram of interaction between a home 4G core network device group and a roaming 4G core network device group provided in the prior art;

fig. 5 is a schematic diagram of a 5G broadband trunking communication system architecture including a 5G core network device group according to an embodiment of the present application;

fig. 6 is an architecture schematic diagram of a 5G broadband trunking communication system including two 5G core network devices according to an embodiment of the present application;

fig. 7 is an interaction diagram of a roaming 5G core network device group and a home 5G core network device group provided in the embodiment of the present application;

fig. 8 is a schematic diagram of a 5G radio access network device shared by different 5G core network device groups according to an embodiment of the present application;

fig. 9 is an interaction schematic diagram between a 4G broadband trunking communication system and a 5G broadband trunking communication system provided in an embodiment of the present application.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The embodiment of the application can be applied to the field of broadband trunking communication, and the broadband trunking communication is realized based on a broadband trunking communication system. With the continuous development of communication technology, broadband trunking communication systems have matured gradually through the evolution of multiple generations. Such as a 4G broadband trunked communication system.

Fig. 1 is a schematic diagram of a 4G broadband trunking communication system architecture provided by the prior art and including a 4G core network device group. Referring to fig. 1, the existing 4G broadband trunking communication system may include: 4G terminal equipment 101, 4G radio access network equipment 102 and a 4G core network equipment group 103 formed by a plurality of 4G core network equipment.

The 4G terminal devices may be classified into 4G data terminals for performing packet communication and 4G trunking terminals for performing trunking communication.

The 4G radio access network device may be divided into an evolved nodeB (eNB) providing an access service for a 4G data terminal and a T-eNB 1022 providing an access service for a 4G cluster terminal. The 4G data terminal is accessed to the eNB through a Uu interface, and the 4G cluster terminal is accessed to the T-eNB through a Uu-T interface.

The 4G core network device group may include the following 4G core network devices: an eHSS (evolved home subscriber server) device 1031, xGW (x gateway) device 1032, an eMME (evolved mobility management element) device 1033, and a TCF (trunking control function)/TMF (trunking media function) device 1034. The 4G core network equipment group and the eNB communicate through an S1 interface, and the 4G core network equipment group and the T-eNB communicate through an S1-T interface.

The eHSS device is configured to manage subscription data of a user, and may include, but is not limited to: HSS (home subscriber server) device 10311 and THSS (trunking home subscriber server) device 10312. The HSS equipment is used for managing subscription data of the packet communication service of the user, and the THSS equipment is used for managing subscription data of the cluster communication service of the user.

xGW devices may include, but are not limited to: a Serving Gateway (SGW) device 10321 and a packet data network gateway (PGW) device 10322.

As shown in fig. 1, the 4G broadband trunking communication system further includes a service management station 104 and a dispatching station 105. The service management station 104 is configured to manage each 4G core network device in the 4G core network device group, and the scheduling station is configured to schedule the TCF/TMF, so as to implement trunking communication.

It can be seen that the 4G broadband trunking communication system shown in fig. 1 includes one 4G core network device group, and in practical application, the 4G broadband trunking communication system may include a plurality of 4G core network device groups.

Fig. 2 is a schematic diagram of a 4G broadband trunking communication system architecture provided by the prior art and including two 4G core network device groups. Referring to fig. 2, two 4G core network device groups share an eHSS device. The HSS equipment is communicated with eMMC equipment in the two 4G core network equipment groups through an S6a interface, and the THSS equipment is communicated with TCF/TMF equipment in the two 4G core network equipment groups through a TC1 interface.

In addition, as can be seen from fig. 2, the dispatch station 105 and the service management station 104 are also shared between the two 4G core network device groups.

TCF/TMF devices in two 4G core network device groups in fig. 2 communicate with each other through a TC2 interface, eMME devices in two 4G core network device groups communicate with each other through an S10 interface, and xGW devices in two 4G core network device groups communicate with each other through an S5 interface.

As can also be seen from fig. 2, both 4G core network device groups may be connected to a 4G radio access network device to provide a communication service for a 4G terminal device accessing the 4G radio access network device.

The 4G radio access network devices connected by different 4G core network device groups in fig. 2 are independent and different. In practical applications, different 4G core network device groups may share the 4G radio access network device.

Fig. 3 is a schematic diagram of a 4G radio access network device shared by different 4G core network device groups provided by the prior art. Referring to fig. 3, n 4G core network device groups of PLMNs, PLMN are PLMN _1 to PLMN _ n, respectively, share 4G radio access network devices, so that n 4G terminal devices of PLMNs, PLMN _1 to PLMNn, may all access the 4G radio access network devices.

In practical application, the plurality of 4G core network device groups may include a home 4G core network device group and a roaming 4G core network device group. For example, the two 4G core network device groups in fig. 2 are a home 4G core network device group and a roaming 4G core network device group, respectively.

Based on the structural schematic diagram of the 4G core network device group in fig. 2, fig. 4 is an interaction schematic diagram between a home 4G core network device group and a roaming 4G core network device group provided in the prior art. When the 4G terminal device moves from the coverage area of the 4G radio access network device corresponding to the 4G core network device group to which the 4G terminal device belongs to the coverage area of the 4G radio access network device corresponding to the remaining 4G core network device group, the remaining 4G core network device group is referred to as the 4G core network device group of the roaming place of the 4G terminal device.

Referring to fig. 4, an eHSS device in a home 4G core network device group communicates with an eMME device in a roaming 4G core network device group through an S6a interface, an eMME device in the home 4G core network device group communicates with an eMME device in the roaming 4G core network device group through an S10 interface, a THSS in the home 4G core network device group communicates with a TCF/TMF device in the home 4G core network device group through a TC1 interface, a xGW device in the home 4G core network device group communicates with a xGW device in the roaming 4G core network device group through an S8 interface, and a TCF/TMF device in the home 4G core network device group communicates with a TCF/TMF device in the roaming 4G core network device group through a TC2 interface.

It can be seen that the 4G broadband trunking communication system in the prior art is mature, but at present, there is no architecture of the 5G broadband trunking communication system. The embodiment of the application can provide various 5G broadband trunking communication systems.

The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

Fig. 5 is a schematic diagram of an architecture of a 5G broadband trunking communication system including a 5G core network device group according to an embodiment of the present application. As shown in fig. 5, the 5G broadband trunking communication system may include at least one 5G terminal device 201, at least one 5G radio access network device 202, and a 5G core network device group 203. The 5G wireless access network equipment is respectively communicated with the 5G terminal equipment and the 5G core network equipment group.

Referring to fig. 5, the 5G terminal device may include at least one of: a 5G data terminal 2011 for performing packet communication, and a 5G cluster terminal 2012 for performing cluster communication.

Packet communication may also be referred to as wireless packet communication or packet radio communication, among others, for communication in which data or voice information is transmitted in packets over a wireless channel.

The trunking communication is used for a trunking communication common network formed by trunking communication systems with the technical characteristics of channel sharing, dynamic allocation and the like, and provides communication services such as special command scheduling and the like for group users of a plurality of departments, units and the like.

It is to be understood that only one 5G data terminal and one 5G cluster terminal are shown in fig. 5. In practical applications, the system may include one or more 5G data terminals and/or one or more 5G cluster terminals.

Referring to fig. 5, the 5G radio access network device includes at least one of: a first gNB (which may also be referred to as a gnnodeb), a second gNB. The first gNB is used for providing access service for the 5G data terminal, so that the 5G data terminal realizes packet communication through the 5G core network equipment group. The second gNB is used for providing access service for the 5G cluster terminal, so that the second gNB can perform cluster communication and packet communication through the 5G core network equipment and the 5G radio access network equipment.

In addition to fig. 5, the second gNB is further configured to provide an access service to the 5G data terminal, so that the 5G data terminal can perform packet communication through a 5G core network device and a 5G radio access network device. It is to be understood that only one first and one second gNB are shown in fig. 5. In practical applications, one or more first gnbs and/or one or more second gnbs may be included in the system.

Referring to fig. 5, the 5G core network device group includes at least one of the following 5G core network devices: an evolved unified data management (eUDM) device 2031, an evolved access and mobility management function (eAMF) device 2032, an authentication server function (AUSF) device 2037, a Session Management Function (SMF) device 2036, a control policy function (PCF) device 2033, a User Plane Function (UPF) device 2034, a network slice selection function (PCF) device 2038, a Trunking Media Function (TMF) device 2039, a Trunking Control Function (TCF) device 5.

The eUDM device is configured to manage target data, and may be divided into two types according to different 5G terminal devices corresponding to the target data: a first UDM device 20311, a second UDM device 20312. The first UDM equipment is used for managing target data corresponding to the 5G data terminal, the second UDM equipment is used for managing target data corresponding to the 5G cluster terminal, and the target data comprise subscription data, user state data and service state data. Thus, the second UDM device may also become a T-UDM device.

Except for the second UDM device, the functions of the first UDM device, PCF device, AUSF device, SMF device, and UPF device are all consistent with the 3GPP standard definitions, and are not described herein again.

It can be seen that the embodiment of the application can provide not only the 5G trunking communication service for the user, but also provide the basic packet communication service for the user through the 5G data terminal, the first 5G radio access network device, and the first UDM device.

In addition to the above devices, as can be seen from fig. 5, the 5G broadband trunking communication system may further include a service management station 204 and a dispatcher station 205, where the dispatcher station 205 may be connected to the TCF device, and the TMF device is connected to the dispatcher station 205 through the TCF device.

The service management platform is used for managing each 5G core network device in the 5G core network device group, and the scheduling platform is used for scheduling each TCF and TMF to realize cluster communication or packet communication.

Fig. 5 also shows a connection relationship between the 5G core network devices in the 5G core network device group, so that two 5G core network devices communicate with each other through the connection relationship.

As can be seen from fig. 5, any two devices of the NSSF device, the PCF device, the first UDM device, the second UDM device, the AUSF device, the eAMF device, the SMF device, and the TCF device are communicatively connected. To enable this communication connection, these devices need to provide an internal interface. For example, an NSSF device provides an NSSF interface, a PCF device provides an Npcf interface, a first UDM device provides a numm interface, a second UDM device provides an nttudm interface, an AUSF device provides a Nausf interface, an eAMF device provides a Namf interface, an SMF device provides an Nsmf interface, and a TCF device provides an Ntcf interface.

In addition, the UPF device and the SMF device are connected through an N4 interface in a communication mode, the TCF device and the TMF device are usually arranged in a combined mode, and the UPF device and the TMF device are connected through an N6 interface in a communication mode. The eAMF device is in communication connection with the 5G wireless access network device through an N2T interface, the TMF device is in communication connection with the 5G wireless access network device through an N3T interface, and the 5G wireless access network device is in communication connection with the UPF device through an N3 interface.

As can also be seen from fig. 5, in addition to the communication connection with the 5G radio access network device, the 5G terminal device may also be in communication connection with the eAMF device through an N1 interface, so that the eAMF device performs access management and mobility management on the 5G terminal device.

Optionally, the signaling message between the AMF device and the TCF device includes at least one of the following: a Trunking Signaling Message (TSM), a multicast session management message. The signaling message between the AMF device and the 5G radio access network device includes: multicast session management messages.

Optionally, the TCF device and the TMF device are configured as a TCF/TMF device, and in addition to the 3GPP standard, the TCF/TMF device further adds a function of sending a multicast data stream to the gNB where the group member is located, and a function of sending a unicast data stream to the UPF of the specific terminal device.

The TSM is used for transmitting signaling in the trunking communication process, so that trunking communication can be controlled through the TSM, and smooth operation of trunking communication can be finally ensured.

The multicast session management message is used for session management of a group consisting of a plurality of users in the cluster communication. Therefore, the group conversation can be ensured to be carried out smoothly.

The 5G data terminal can be accessed to the first gNB through a Uu interface, the 5G data terminal can also be accessed to the second gNB through a Uu-T interface, and the 5G cluster terminal is accessed to the second gNB through a Uu-T interface.

The first gNB communicates with the 5G core network device group through an N2 interface or an N3 interface, and the second gNB communicates with the 5G core network device group through an N2-T interface or an N3-T interface.

As can be seen from fig. 5, the system shown in fig. 5 includes a 5G core network device group. In practical application, however, a plurality of 5G core network device groups may exist in one 5G broadband trunking communication system. The different 5G core network device groups referred to herein correspond to different Public Land Mobile Network (PLMN) codes. That is to say, the PLMN code is used to uniquely identify a 5G core network device group, which is the identity of the 5G core network device group. One operator may generally correspond to a group of 5G core network devices of multiple PLMN codes, so that the 5G core network devices corresponding to different PLMN codes may belong to the same operator or different operators.

Fig. 6 is an architecture schematic diagram of a 5G broadband trunking communication system including two 5G core network devices according to an embodiment of the present application.

Referring to fig. 6, the eAMF devices belonging to different 5G core network device groups communicate with each other through an N14 interface to transmit user context information.

Referring to fig. 6, the eAMF device and the AUSF device belonging to different 5G core network device groups communicate through an N12 interface to transmit information such as an authentication vector.

Referring to fig. 6, SMF devices belonging to different 5G core network device groups communicate with each other through an N16 interface to transmit session establishment messages, session update messages and session deletion messages.

Referring to fig. 6, UPF devices belonging to different 5G core network device groups communicate with each other through an N9 interface to transmit GTPU (tunneling protocol user plane) data.

Referring to fig. 6, the eUDM device is shared among the 5G core network device groups, and includes a shared first UDM device and a shared second UDM device, and the eAMF devices in the 5G core network device groups communicate with the first UDM device through an N8 interface.

As shown in fig. 6, each 5G core network device group shares not only the eUDM device but also the scheduler and the service manager. The TCF equipment of each 5G core network equipment group is communicated with the dispatching desk, and each 5G core network equipment group is connected with the service management desk.

Referring to fig. 6, the TCF devices in each 5G core network device group communicate with the shared second UDM device through the TC1 interface.

It should be noted that, in the above-mentioned fig. 6, the connection relationship between different 5G core network device groups is mainly marked, and for simplifying the drawing, the connection relationship between the 5G core network devices in the same 5G core network device group is not shown, and the connection relationship between the devices in the same 5G core network device group may refer to that shown in fig. 5. In addition, fig. 6 also shows a simplified connection relationship between the 5G terminal device and the 5G radio access network device, and a connection relationship between the 5G terminal device and the 5G coreless access network device, both of which can be referred to as shown in fig. 5. That is, the connection relationship in fig. 5 still applies in fig. 6.

It can be seen that, in the above-mentioned fig. 6, each 5G core network device group shares an eUDM device, but in the roaming scenario, each 5G core network device group may be a roaming 5G core network device group and a home 5G core network device group, and the roaming 5G core network device group and the home 5G core network device group cannot share the eUDM device, and both have independent eUDM devices.

Fig. 7 is an interaction diagram of a roaming 5G core network device group and a home 5G core network device group provided in the embodiment of the present application.

Referring to fig. 7, the eAMF device of the roaming 5G core network device group and the eAMF device of the home 5G core network device communicate with each other through an N14 interface.

Referring to fig. 7, the eAMF device of the roaming 5G core network device group communicates with the AUSF device of the home 5G core network device through an N12 interface.

Referring to fig. 7, the SMF device of the roaming 5G core network device communicates with the SMF device of the home 5G core network device through an N16 interface.

Referring to fig. 7, the UPF device of the roaming 5G core network device and the UPF device of the home 5G core network device communicate with each other through an N9 interface.

Referring to fig. 7, the eAMF device in the roaming 5G core network device group communicates with the first UDM device in the home 5G core network device group through an N8 interface to transmit packet communication data and service subscription information of the packet communication. And the TCF equipment in the home 5G core network equipment group communicates with the second UDM equipment in the home 5G core network equipment group through a TC1 interface so as to transmit cluster communication data and service subscription information of the cluster communication.

Referring to fig. 7, the TCF device in the home 5G core network device group communicates with the TCF in the roaming 5G core network device group through the TC2 interface to transmit the relevant messages of the group user and the group cluster service management.

It should be noted that fig. 7 mainly marks the connection relationship between the home 5G core network device group and the roaming 5G core network device group. For simplification of the drawing, the connection relationship between the 5G core network devices in the same 5G core network device group is not shown, and the connection relationship between the devices in the same 5G core network device group may refer to that shown in fig. 5. Furthermore, fig. 7 also shows, in a simplified manner, the connection between the 5G terminal device and the 5G radio access network device, and the connection between the 5G terminal device and the 5G coreless access network device, both of which can be seen in fig. 5. That is, the connection relationship in fig. 5 still applies in fig. 7.

The different 5G core network device groups in fig. 6 or fig. 7 may share the 5G radio access network device to save the 5G radio access network device. Fig. 8 is a schematic diagram of a 5G radio access network device shared by different 5G core network device groups according to an embodiment of the present application. Referring to fig. 8, n 5G core network device groups of PLMNs, PLMN are PLMN _1 to PLMN _ n, respectively, share a 5G radio access network device, so that n 5G terminal devices of PLMNs, PLMN _1 to PLMNn, may all access the 5G radio access network device.

Optionally, the 5G broadband trunking communication system may further include at least one 4G core network device group, where the 4G core network device group and the 5G core network device group communicate with each other through a TC2 interface. The TC2 interface is used for realizing the intercommunication of cluster voice, the intercommunication of cluster video and the intercommunication of supplementary service. The change points of the B-Trunc 4G and the B-Trunc 5G are adaptive pipeline changes, but the logic and the management of the cluster service processing network element are not changed. Therefore, for the call/group call service of the cluster point, the TCF/TMF processing does not distinguish the B-Trunc 5G/4G system, and the unification is realized in the B-Trunc 5G/4G cluster.

In practical application, when the 5G terminal device is located within the coverage of the 5G radio access network device, the 5G terminal device communicates with the 5G radio access network device through the 5G core network device group. However, when the 5G terminal device moves to the coverage area of the 4G radio access network device, the 5G terminal device may communicate through the 4G core network device group. In this scenario, interaction is required between the 5G broadband trunking communication system and the 4G broadband trunking communication system, so that normal communication of the 5G terminal device can be realized, and the 5G terminal device is switched from 5G communication to 4G communication.

Fig. 9 is an interaction schematic diagram between a 4G broadband trunking communication system and a 5G broadband trunking communication system provided in an embodiment of the present application.

Referring to fig. 9, the eMME device in the 4G core network device group is communicatively connected to the eAMF device in the 5G core network device group through an N26 interface.

Referring to fig. 9, the SMF device in the 5G core network device group and the PCF in the 5G core network device group are communicatively connected through an N7 interface, and the SMF device in the 5G core network device group and the UPF device in the 5G core network device group are communicatively connected through an N4 interface.

The SMF device integrates xGW (including PGW and SGW) in the 4G core network device with the function of processing the control plane message, so that the SMF device can interface with xGW in the 4G core network device group. SMF devices and xGW communicate over the S5-C interface to transport control plane messages.

The UPF device integrates xGW (including PGW and SGW) in the 4G core network device with the function of processing the user plane message, so that the UPF device can interface with xGW in the 4G core network device group. The UPF devices and xGW communicate via the S5-U interface to transmit user messages.

The first UDM device integrates the functions of the HSS device, so that in a scenario where the HSS does not support a 5G subscription, the first UDM device in the 5G core network device group communicates with the eMME device in the 4G core network device group through an S6a interface, so that the first UDM device issues subscription data to the eMME device through an S6a interface.

Referring to fig. 9, the TCF/TMF device in the 4G core network device group and the TCF/TMF device in the 5G core network device group communicate via the TC2 interface.

Referring to fig. 9, an eNB communicates with a 5G data terminal through a Uu interface, so that the 5G data terminal performs packet communication through a 4G radio access network device and a 4G core network device group.

Referring to fig. 9, xGW equipment communicates with eNB equipment through S1-U, eMME equipment communicates with eNB through S1-C interface, and xGW equipment and eMME equipment communicate through S11 interface.

Referring to fig. 9, the SMF device and the first UDM device are communicatively connected via an N10 interface, the SMF device and the eAMF device are communicatively connected via an N11 interface, and the eAMF device and the 5G terminal device are communicatively connected via an N2 interface.

From FIG. 9, it can be seen thatHIn order to support interaction with the 5G broadband trunking communication system, part of the devices in the 4G broadband trunking communication system needs to be upgraded. For example, eMME requires an upgrade to support interface N26 with the eAMF. Also for example, the eNB needs to be upgraded to support the Uu interface with the 5G data terminal.

Of course, some interfaces between the 4G broadband trunked communication system and the 5G broadband trunked communication system are already supported by devices in the existing 4G broadband trunked communication system, so that no upgrade is required. For example, an eMME device natively supports the S6a interface, so the eMME device does not need to upgrade support for the S6a interface.

It can be understood that the networks corresponding to the 5G core network device group and the 4G core network device group provided in the embodiment of the present disclosure are broadband Trunking Core Networks (TCNs).

In practical application, the 4G core network device group further includes a Domain Name Server (DNS) device. The DNS device does not need to be upgraded, but needs to add the N26 interface address of the AMF device, the S11 interface address of the SMF device, and the S5 interface address of the SMF device.

It can be seen from the above process that the interaction process between the 4G broadband trunking communication system and the 5G broadband trunking communication system depends on the N26 interface, and this interaction depending on N26 can ensure that the communication does not need to be interrupted when the 5G communication is switched to the 4G communication, thereby realizing the uninterrupted switching.

However, if the eMME device cannot be upgraded to support the N26 interface, only the 4G radio access network device is upgraded to support the above-described interworking procedure. In this scenario, the 5G trunking terminal can only implement switching from 5G broadband trunking communication to 4G broadband trunking communication by means of redirection, which may cause temporary interruption of trunking service.

In the initial stage of network establishment of the 5G broadband trunking communication system, the newly established 5G broadband trunking communication system and the existing 4G broadband trunking communication system coexist, and with the gradual improvement of the 5G broadband trunking communication system, the 4G broadband trunking communication system gradually quits, and finally only the 5G broadband trunking communication system remains.

The core network device and the radio access network device in this embodiment of the application may be different independent physical devices, or the function of the core network device and the logical function of the radio access network device may be integrated on the same physical device, or a physical device may be integrated with a part of the function of the core network device and a part of the function of the radio access network device. The terminal equipment may be fixed or mobile. Fig. 1 to 9 are only schematic diagrams, and other wireless access network devices, such as a wireless relay device and a wireless backhaul device, may also be included in the broadband trunking communication system, which are not shown in fig. 1 to 9. The embodiments of the present application do not limit the number of core network devices, radio access network devices, and terminal devices included in the broadband trunking communication system.

The radio access network device is an access device in which a terminal device accesses to the broadband trunking communication system in a wireless manner, and may be a base station (base station), an evolved NodeB (eNodeB), a Transmission Reception Point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system; or may be a module or a unit that performs part of the functions of the base station, for example, a Centralized Unit (CU) or a Distributed Unit (DU). The embodiments of the present application do not limit the specific technology and the specific device form used by the radio access network device.

In the embodiment of the present application, the means for implementing the function of the radio access network device (including the 4G radio access network device and the 5G radio access network device) may be a radio access network device; it may also be a device, such as a chip system, capable of supporting the radio access network device to implement the function, and the device may be installed in the radio access network device or used in cooperation with the radio access network device. In the technical solution provided in the embodiment of the present application, taking a device for implementing a function of a radio access network device as an example, the device is a radio access network device, and the technical solution provided in the embodiment of the present application is described.

The Terminal device (including the 4G Terminal device and the 5G Terminal device) related to the embodiment of the present application may also be referred to as a Terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like. The 5G terminal device may be a mobile phone, a tablet computer, a computer with a wireless transceiving function, a virtual reality 5G terminal device, an augmented reality 5G terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned operation, a wireless terminal in tele-operation, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city (smart city), a wireless terminal in a smart home, and the like. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (17)

1. A 5G broadband trunked communication system comprising: the system comprises 5G terminal equipment, 5G wireless access network equipment and a 5G core network equipment group, wherein the 5G wireless access network equipment is respectively communicated with the 5G terminal equipment and the 5G core network equipment group;

wherein the 5G terminal equipment comprises at least one of the following: the system comprises a 5G data terminal for carrying out packet communication and a 5G cluster terminal for carrying out cluster communication;

the 5G radio access network device comprises at least one of: the first gNB is used for providing access service for the 5G data terminal, and the second gNB is used for providing access service for the 5G data terminal and the 5G cluster terminal;

the 5G core network equipment group comprises at least one of the following 5G core network equipment: the system comprises evolution unified data management (eUDM) equipment, evolution access and mobile management function (eAMF) equipment, authentication server function (AUSF) equipment, Session Management Function (SMF) equipment, control policy function (PCF) equipment, User Plane Function (UPF) equipment, Network Slice Selection Function (NSSF) equipment, Trunking Media Function (TMF) equipment and Trunking Control Function (TCF) equipment, wherein the eUDM equipment comprises first UDM equipment and second UDM equipment, the first UDM equipment is used for managing target data corresponding to the 5G data terminal, the second UDM equipment is used for managing the target data corresponding to the 5G trunking terminal, and the target data comprises subscription data, user state data and service state data.

2. The system of claim 1, wherein the signaling messages between the eAMF device and the TCF device comprise at least one of: a cluster signaling message TSM, a multicast session management message, the signaling message between the AMF device and the 5G radio access network device comprising: multicast session management messages.

3. The system of claim 1, wherein the 5G data terminal accesses the first gNB through a Uu interface, or accesses the second gNB through a Uu-T interface, and wherein the 5G cluster terminal accesses the second gNB through a Uu-T interface.

4. The system of claim 1, wherein the first gNB communicates with the 5G core network device group over an N2 interface or an N3 interface, and wherein the second gNB communicates with the 5G core network device group over an N2-T interface or an N3-T interface.

5. The system of claim 1, wherein any two of said NSSF device, said PCF device, said first UDM device, said second UDM device, said AUSF device, said eAMF device, said SMF device, and said TCF device communicate with each other, said NSSF device provides an Nnssf interface, said PCF device provides an Npcf interface, said first UDM device provides a Nudm interface, said second UDM device provides an Ntudm interface, said AUSF device provides a Nausf interface, said eAMF device provides a Namf interface, said SMF device provides an Nsmf interface, said TCF device provides an Ntcf interface, said UPF device and said SMF device communicate with each other via an N4 interface, said UPF device and said TMF device communicate with each other via an N6 interface, said eAMF device communicates with said 5G radio access network device via an N2T interface, and said TMF device communicates with said 5G radio access network device via an N3T interface, the 5G radio access network device communicates with the UPF device over an N3 interface, and the 5G terminal device communicates with the eAMF device over an N1 interface.

6. The system of claim 1, wherein the 5G core network device groups are multiple, different 5G core network device groups correspond to different PLMN codes, and the eAMF devices belonging to different 5G core network device groups communicate with each other through an N14 interface.

7. The system of claim 6, wherein the eAMF devices and AUSF devices belonging to different 5G core network device groups communicate via an N12 interface.

8. The system of claim 6, wherein SMF devices belonging to different 5G core network device groups communicate with each other via an N16 interface.

9. The system according to claim 6, wherein UPF devices belonging to different 5G core network device groups communicate with each other via an N9 interface.

10. The system according to any one of claims 6 to 9, wherein said eUDM device is shared between each of said 5G core network device groups, and wherein the eAMF devices in each of said 5G core network device groups communicate with said first UDM device via an N8 interface.

11. The system of claim 10, wherein the TCF devices in each of the 5G core network device groups communicate with the second UDM device via a TC1 interface.

12. The system according to any one of claims 6 to 9, wherein each 5G core network device group includes a roaming 5G core network device group and a home 5G core network device group, each of the roaming 5G core network device group and the home 5G core network device group has an independent eUDM device, the eAMF device in the roaming 5G core network device group communicates with a first UDM device in the home 5G core network device group through an N8 interface, and the TCF device in the home 5G core network device group communicates with a second UDM device in the home 5G core network device group through a TC1 interface.

13. The system of claim 12, wherein the TCF device in the home 5G core network device group communicates with the TCF in the roaming 5G core network device group via a TC2 interface.

14. The system according to any of claims 6 to 9, wherein the 5G radio access network device is shared between different groups of 5G core network devices.

15. The system according to any one of claims 1 to 9, wherein the system further comprises at least one 4G core network device group, the TCF/TMF devices of the 4G core network device group and the TCF/TMF devices of the 5G core network device group communicate with each other through a TC2 interface, the first UDM device in the 5G core network device group and the eMME device in the 4G core network device group communicate with each other through a S6a interface, the SMF device in the 5G core network device group and the xGW device in the 4G core network device group communicate with each other through a S5-C interface, the UDF device in the 5G core network device group and the xGW device in the 4G core network device group communicate with each other through a S5-U interface, the first UDM device in the 5G core network device group and the SMF device in the 5G core network device group communicate with each other through an N10 interface, the AMF device in the 5G core network device group and the SMF device in the 5G core network device group communicate through an N11 interface, and the xGW device in the 4G core network device group and the eNB corresponding to the 4G core network device group communicate through an S1-C interface.

16. The system of claim 15, wherein the eNME device in the 4G core network device group is communicatively coupled to the eAMF device in the 5G core network device group via an N26 interface.

17. The system of claim 15, wherein the SMF devices in the 5G core network device group and the PCF devices in the 5G core network device group communicate via an N7 interface, and wherein the SMF devices in the 5G core network device group and the UPF devices in the 5G core network device group communicate via an N4 interface.

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