CN112738737A - 5G cluster communication method and system - Google Patents

5G cluster communication method and system Download PDF

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Publication number
CN112738737A
CN112738737A CN202011438713.8A CN202011438713A CN112738737A CN 112738737 A CN112738737 A CN 112738737A CN 202011438713 A CN202011438713 A CN 202011438713A CN 112738737 A CN112738737 A CN 112738737A
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message
cluster
terminal
registration
core network
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周巍
余刚
邵鹄
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Wuhan Hongxin Technology Development Co Ltd
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Wuhan Hongxin Technology Development Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • H04W8/205—Transfer to or from user equipment or user record carrier

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a 5G cluster communication method and a system, comprising the following steps: acquiring a cluster registration request sent by a terminal; if the cluster registration request is confirmed to be a legal signing cluster request, sending a registration receiving message to the terminal through a preset NAS registration message; receiving a cluster registration completion message of the terminal, updating the registration state of the terminal, and sending a group update message to the terminal through a preset downlink NAS message; and after receiving the preset uplink NAS message of the terminal, starting a group call establishment process, and after establishing group call context interaction with the base station, confirming to accept group call establishment through the preset downlink NAS message to complete group call establishment. The invention completes the support of cluster communication related functions by adding a small amount of additional broadband cluster extension NAS information in the NAS container, reduces the change of a terminal protocol stack and a core network protocol stack, and simultaneously reduces the complexity of system realization.

Description

5G cluster communication method and system
Technical Field
The invention relates to the technical field of wireless communication, in particular to a 5G cluster communication method and a system.
Background
In the field of private and industrial networks, there is a great demand for Trunking communications, and the development process is widely used from a narrow-band Trunking communication system represented by TETRA standard to a broadband Trunking system represented by LTE-based B-trunc (broadband Trunking communication), MCPTT.
The existing trunking communication schemes are roughly as follows:
the first is a trunking communication method based on broadband access, wireless communication networks 4G and 5G only provide a bottom layer bearing transmission channel, the specific trunking service is realized by a dispatcher of an upper layer application and various service processes, and is realized by dispatching a client program or an APP client at a terminal side. The scheme has the advantages that the existing communication network is not required to be modified, the implementation is convenient, and the defects that the QOS of the scheduling signaling cannot be guaranteed and the occupation of the air interface resource bandwidth of the cluster communication is serious.
Secondly, broadband Trunking communication B-trunk (broadband Trunking communication) is realized by adding an air interface Trunking logical channel based on 3GPP R9, adding a Trunking control plane module TCF and a Trunking user plane TMF module in a core network EPC, and by expanding an original NAS message.
While in the 5G standard, the 3GPP R16 standard has been technically frozen, and no relevant standard formulation has been carried out yet on how to implement trunking communication in 5G. Therefore, how to support cluster communication based on the existing 5G architecture is a new problem, and needs to take system efficiency and implementation complexity into consideration.
Disclosure of Invention
The invention provides a 5G cluster communication method and a system, which are used for solving the defect that no corresponding cluster communication implementation standard exists in the prior art aiming at a 5G application scene.
In a first aspect, the present invention provides a 5G cluster communication method, including:
acquiring a cluster registration request sent by a terminal;
if the cluster registration request is confirmed to be a legal signing cluster request, sending a registration receiving message to the terminal through a preset NAS registration message;
receiving a cluster registration completion message of the terminal, updating the registration state of the terminal, and sending a group update message to the terminal through a preset downlink NAS message;
and after receiving the preset uplink NAS message of the terminal, starting a group call establishment process, and after establishing group call context interaction with the base station, confirming to accept group call establishment through the preset downlink NAS message to complete group call establishment.
Further, the sending a group update message to the terminal through a preset downlink NAS message further includes:
and granting the calling terminal speaking right to the terminal.
Further, after receiving the preset uplink NAS message of the terminal, the method completes group call establishment, and then further includes:
and sending a group calling context establishment request message to each base station, and after receiving the group calling context establishment request message replied by at least one base station, sending a trunking paging message to other terminals within the coverage range of the preset base station.
Further, the preset NAS registration message, the preset downlink NAS message, and the preset uplink NAS message are obtained by performing cluster protocol message extension in an NAS container mode or extending a cell mode based on an NAS message.
In a second aspect, the present invention further provides a 5G cluster communication method, including:
sending a cluster registration request to a core network;
if the core network confirms that the cluster registration request is a legal signing cluster request, receiving a registration receiving message sent by the core network through a preset NAS registration message;
replying a cluster registration completion message to the core network, receiving a group update message sent by the core network in a preset downlink NAS message after the core network completes updating the registration state of the terminal, and updating the locally stored group information;
and after sending a preset uplink NAS message to the core network and receiving the establishment of the group calling call sent by the core network through the downlink NAS message, finishing the establishment of the group calling.
Further, the updating the locally stored group information further includes:
and receiving the calling terminal speaking right granted by the core network.
In a third aspect, the present invention further provides a 5G trunking communication system, including:
the acquisition module is used for acquiring a cluster registration request sent by a terminal;
the first registration module is used for sending a registration receiving message to the terminal through a preset NAS registration message if the cluster registration request is confirmed to be a legal signing cluster request;
the first updating module is used for receiving the cluster registration completion message of the terminal, updating the registration state of the terminal and sending a group updating message to the terminal through a preset downlink NAS message;
and the first establishing module is used for starting a group calling establishing process after receiving a preset uplink NAS message of the terminal, confirming to accept group calling establishment through the preset downlink NAS message after establishing group calling context interaction with the base station, and finishing group calling establishment.
In a fourth aspect, the present invention further provides a 5G trunking communication system, including:
a sending module, configured to send a cluster registration request to a core network;
a second registration module, configured to receive a registration acceptance message sent by a core network through a preset NAS registration message if the core network determines that the cluster registration request is a legal subscription cluster request;
the second updating module is used for replying a cluster registration completion message to the core network, receiving a group updating message sent by the core network in a preset downlink NAS message after the core network completes updating the registration state of the terminal, and updating the locally stored group information;
and the second establishing module is used for finishing group calling establishment after receiving the acceptance group calling establishment sent by the core network through the downlink NAS message after sending a preset uplink NAS message to the core network.
In a fifth aspect, the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the steps of the 5G cluster communication method as described in any one of the above are implemented.
In a sixth aspect, the present invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the 5G group communication method as set forth in any of the above.
The 5G cluster communication method and the system provided by the invention have the advantages that the support of cluster communication related functions is completed by adding a small amount of additional broadband cluster extension NAS information in the NAS container, the change of a terminal protocol stack and the change of a core network protocol stack are reduced, and the complexity of system realization is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a 5G cluster communication method provided by the present invention;
fig. 2 is a schematic diagram of a 5G cluster network element module provided in the present invention;
FIG. 3 is a flow chart of a group call provided by the present invention;
fig. 4 is a second schematic flow chart of the 5G cluster communication method provided by the present invention;
FIG. 5 is a schematic diagram of a machine registration process provided by the present invention;
fig. 6 is a schematic structural diagram of a 5G cluster communication system provided in the present invention;
fig. 7 is a second schematic structural diagram of a 5G trunking communication system provided by the present invention;
fig. 8 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow diagram of a 5G cluster communication method provided by the present invention, and a corresponding execution main body is a core network, as shown in fig. 1, including:
101, acquiring a cluster registration request sent by a terminal;
102, if the cluster registration request is confirmed to be a legal signing cluster request, sending a registration receiving message to the terminal through a preset NAS registration message;
103, receiving a cluster registration completion message of the terminal, updating the registration state of the terminal, and sending a group update message to the terminal through a preset downlink NAS message;
and 104, after receiving the preset uplink NAS message of the terminal, starting a group call establishment process, and after establishing group call context interaction with the base station, confirming to accept group call establishment through the preset downlink NAS message to complete group call establishment.
Specifically, after receiving that a user terminal accesses to the 5G network, the core network carries a cluster registration request message through a registration request message, and after analyzing the cluster registration message, the core network cluster signaling processing module TCF matches whether a relevant registration request is registered in the local cluster subscription database by querying the cluster user information base THSS, and if the cluster registration request is signed, replies a registration acceptance message through an NAS message to accept the cluster registration of the terminal. After receiving the cluster registration completion sent by the terminal, the core network updates the terminal cluster context to Update the terminal state to be the registered cluster, and notifies the terminal to Update the Group Information through a DL NAS Transport message (carrying a Group Information Update message contained in an NAS message container).
After receiving the N1 interface message, the core network AMF submits a CALL REQUEST in the NAS container to the TCF module for processing, and after the TCF module analyzes the trunking CALL REQUEST message, the control plane inside the core network triggers the PDU session of the user plane to establish a trunking related bearer, and synchronously, finds base stations where all group members of the group called by the user are located, the core network sends a group CALL context establishment REQUEST message to each base station, and after at least one base station replies to the group CALL context establishment REQUEST response message, the core network considers that the group CALL is established successfully, and replies a DL NAS Transport message (carrying a set CALL ACCEPT message in the NAS message container) to the calling terminal, and grants the calling terminal session right by default.
After replying the group calling context establishment request message, the base station sends a cluster paging message to the terminal within the coverage area of the base station, wherein the cluster paging message carries a group calling establishment indication message, and after receiving the message, the called group terminal members within the coverage area of the base station receive corresponding group calling downlink voice and video data by decoding the group information related configuration in the cluster paging message.
As shown in fig. 2 and fig. 3, in order to implement the above-mentioned flows, the core network protocol stack expands the relevant NAS protocol by adding the TCF module, and newly adds the cluster signaling processing module to process the cluster signaling plane message, thereby completing cluster service processing such as cluster registration, cluster single call, cluster group call, and the like, and also can expand the AMF module to perform relevant signaling processing, the SMF module increases the cluster service related PDU session processing flow, the UPF interacts with the TMF through the N6 interface, and the newly added TMF module performs cluster user plane data forwarding. The NAS message carrying mode of the N1 interface may use a NAS container mode (B-trunk register REQUEST), and optionally, may also be performed in an extended cell mode of an N1 interface NAS message REGISTRATION REQUEST.
The invention completes the support of cluster communication related functions by adding a small amount of additional broadband cluster extension NAS information in the NAS container, reduces the change of a core network protocol stack and also reduces the complexity of system realization.
Based on the foregoing embodiment, fig. 4 is a second flowchart of the 5G cluster communication method provided by the present invention, and the corresponding execution main body is a terminal, as shown in fig. 4, including:
201, sending a cluster registration request to a core network;
202, if the core network confirms that the cluster registration request is a legal signing cluster request, receiving a registration receiving message sent by the core network through a preset NAS registration message;
203, replying a cluster registration completion message to the core network, receiving a group update message sent by the core network in a preset downlink NAS message after the core network completes updating the registration state of the terminal, and updating the locally stored group information;
204, after sending a preset uplink NAS message to the core network, and after receiving the acceptance of the group call establishment sent by the core network in the downlink NAS message, completing the group call establishment.
Specifically, after the user terminal is accessed to the 5G network, the cluster registration request message is carried by the registration request message, and after the cluster registration message is analyzed by the core network side cluster signaling processing module TCF, the cluster user information base THSS is queried to match whether the relevant registration request is registered in the local cluster subscription database, and if the cluster registration request is signed, the registration acceptance message is replied by the NAS message, and the terminal cluster registration is accepted. And after receiving the cluster registration receiving message, the terminal replies an NAS cluster registration completion message.
After the terminal cluster registration is completed, the terminal updates the stored group information of the local terminal after receiving the group information in the group information update, namely, the corresponding group can be selected to initiate a cluster group CALL REQUEST, after the core network AMF receives the N1 interface message, the cluster message CALL REQUEST in the NAS container is submitted to the TCF module for processing, after the TCF module analyzes the cluster CALL REQUEST message, the control plane in the core network triggers the PDU session of the user plane to establish the cluster related load, the core network synchronously searches the base stations where all the group members of the group called by the user are located, the core network sends a group CALL context establishment REQUEST message to each base station, and after at least one base station replies the group CALL context establishment REQUEST response message, the core network considers that the group CALL is successfully established. The calling terminal receives DL NAS Transport message (carrying NAS message container containing set CALL ACCEPT message) replied by the core network, and receives default granted calling terminal talk right, after receiving the relevant message, the terminal COMPLETEs the group CALL establishment process through UL NAS Transport message (carrying NAS message container containing CALL COMPLETE message), namely, the voice or video CALL can be carried out through the talk right authorized by the core network.
As also shown in fig. 2 and fig. 3, in order to complete the above flow, a small number of B-TrunC extended NAS messages in the NAS container are newly added on the terminal side to complete the support of the cluster communication related function; when the 5G cluster is communicated with the 4G cluster or the 5G cluster is communicated with the 5G cluster, the control plane is communicated with each other through a TC2-C interface, the user plane is communicated with each other through a TC2-U interface, and the terminal registers 5G to the 5G network and simultaneously performs cluster registration through NAS information of an N1 interface carrying cluster registration information. In fig. 5, the NAS message carrying mode of the N1 interface may use a NAS container mode (B-trunk register REQUEST), or optionally, may also be performed by an extended cell mode of an N1 interface NAS message REGISTRATION REQUEST.
The invention completes the support of cluster communication related functions by adding a small amount of additional broadband cluster extension NAS information in the NAS container, reduces the change of a terminal protocol stack and also reduces the complexity of system realization.
Based on any of the above embodiments, the present invention provides a method for group calling, which specifically comprises the following steps:
step 1: when the terminal is started, the terminal is accessed into a 5G network through a 5G REGISTRATION process N1 interface, wherein a NAS message REGISTRATION REQUEST carries a B-trunk cluster REGISTRATION message (B-trunk register REQUEST) in a mode of carrying a NAS message contact;
step 2: after receiving the 5G NAS REGISTRATION message, the 5G core network analyzes a cluster REGISTRATION message in the NAS container, performs cluster REGISTRATION flow processing, records the relevant capability information of the terminal cluster, and responds to a message REGISTRATION ACCEPT through the 5G NAS REGISTRATION, wherein the message carries an NAS container cluster REGISTRATION acceptance message B-trunk register request ACCEPT;
and step 3: after receiving the 5G NAS message REGISTRATION ACCEPT and analyzing the cluster REGISTRATION acceptance message in the NAS container, the terminal completes the cluster REGISTRATION of the terminal through a UL NAS Transport message (carrying a cluster REGISTRATION completion message B-trunC register complete);
and 4, step 4: after receiving the terminal cluster registration completion message, the 5G core network notifies the terminal to Update the Group Information through a DL NAS Transport message (carrying a Group Information Update message contained in an NAS message container);
and 5: after receiving the group information updating message in the step 4, the terminal updates the stored group information of the local terminal;
step 6: the group calling terminal selects a certain group to initiate group calling through UL NAS Transport message (carrying a trunking CALL CALL REQUEST);
and 7: after receiving the GROUP CALL establishment message, the core network checks a GROUP member list of a GROUP called by the current terminal, sends a newly added N2 message (GROUP CALL CONTEXT SETUP) to each base station attached to each member of the GROUP members to establish a GROUP CALL CONTEXT (carrying NAS message GROUP CALL SETUP INDICATION), and then establishes a GROUP CALL downlink tunnel for each base station participating in the GROUP CALL; in view of acquiescence of obtaining the speaking right by the calling terminal, the core network establishes a cluster bearing PDU session for the calling terminal and is used for transmitting the uplink voice video data of the calling speaking right party; after the GROUP CALL context resource between the core network and the base station is established, the core network sends DL NAS Transport message (carrying FLOOR INFO talk right notification message) to the called terminal to notify the called terminal of the current speaker information, and the base station periodically sends trunking PAGING TRUNK PAGING message and trunking GROUP CALL configuration message GROUP CALL CONFIG to the terminal in the cell;
and 8: after receiving the trunking paging message and the combined configuration message sent by the base station, the group calling called terminal receives and analyzes trunking voice and video data from a network;
and step 9: after the calling terminal finishes the conversation, a UL NAS Transport message (carrying cluster talk right RELEASE FLOOR RELEASE) is sent to a core network, and after the core network receives the message, the talk right of the terminal is released and the cluster uplink bearing PDU session corresponding to the terminal is released;
step 10: the talk right processing flow is specifically that the called terminal applies for the talk right, and sends a UL NAS Transport message (carrying cluster talk right release FLOOR REQUEST) to the core network, and after receiving the message, the core network establishes an uplink cluster bearer PDU session for the talk right terminal, so as to transmit data such as uplink voice and video of the currently authorized party. After the core network successfully grants the speaking right to the speaking right application terminal, the uplink voice and video data of the speaking right party is sent to each called listening party through the downlink group call bearer established in the step 7.
Here, the flow when the terminal is idle is:
step 1: the terminal initiates the Trunking group calling Service by carrying NAS message container (containing the group calling Request CALL REQUEST) message in the NAS message Service Request;
step 2: after receiving the group CALL REQUEST carried by the TSR, the core network recovers the cluster uplink dedicated bearer PDU session for the calling terminal, so as to transmit uplink voice and video data. If the group call is not established, the group call resource is established through the step 7, and the speaking right is granted to the call initiating terminal by default, and the trunking conversation process of the speaking right switching among the terminals is completed through the steps 8, 9 and 10.
Based on any of the above embodiments, the present invention further provides a cross-system cluster single call process, that is, when a 5G cluster and a 4G cluster are intercommunicated, a control plane performs intercommunication through a TC2-C interface, and a user plane performs intercommunication through a TC2-U interface, which may be specifically divided into a 5G cluster terminal calling a 4G B-TrunC terminal, or a 4G cluster terminal calling a 5G cluster terminal, where the two processes are similar:
step 1: after receiving the message, the 5G cluster core network TCF module sends a single CALL REQUEST message to a 4G B-Trunc core network through an SIP (INVITE) message of a TC2-C interface by the 5G cluster system terminal through NAS message container message carrying (CALL REQUEST message);
step 2: after receiving the SIP (invite) message, the 4G B-trunk core network sends NAS (network attached storage) CALL REQUEST message to the called terminal in the system, and replies SIP (100TRYING) message to the 5G cluster core network through a TC2-C interface; after receiving the NAS (Call configured message) replied by the terminal, the B-trunk core network replies an SIP (183Session PROCESSING) message to the 5G cluster core network where the calling terminal is located through a TC2-C interface;
and step 3: after receiving SIP (183Session PROCESSING), the 5G cluster core network issues to the calling terminal through NAS, and establishes a PDU SESSION for the calling terminal;
and 4, step 4: the 4G B-trunk core network establishes corresponding single call special load for the called terminal, the called terminal feeds back NAS, namely ALERTING RINGING message to the core network, and the 4G B-trunk core network informs the calling 5G core network through SIP (180RINGING) message;
and 5: after receiving the SIP (180RINGING) message, the 5G cluster core network informs the calling terminal of RINGING through the extended NAS message container message carrying (NAS: ALERTING);
step 6: and after the called terminal is off-hook, sending NAS (network attached) CALL connection information to the 4G B-Trunc core network. The 4G B-Trunc core network informs the 5G cluster core network where the calling is located through SIP (200OK) information of a TC2-C interface;
and 7: and (4) after receiving the SIP (200OK) in the step (6), the 5G cluster core network informs the calling terminal of CALL connection through an extended NAS message container message carrier (NAS: CALL CONNECT). The calling terminal replies NAS (CALL CONNECT ACK), and the core network informs the called 4G B-Trunc core network through SIP (ACK) information;
and 8: and the 4G B-Trunc core network informs the called terminal of the completion of CALL establishment through NAS, CALL CONNECT ACK. And the subsequent calling and called parties can carry out audio and video conversation.
In order to ensure the compatibility of the system, in the specific implementation, the cells contained in the NAS message carried in the 5G NAS message container message may be kept consistent with the B-TrunC protocol.
The 4G cluster calling terminal singly calls the 5G cluster called terminal, and the 5G cluster calling terminal singly calls the 5G cluster called terminal across the core network, the realization process is similar to the above process, and the invention is not repeated.
Based on any of the above embodiments, the present invention further provides a process of a cross-system cluster group call, that is, a 5G cluster terminal initiates a cluster group call, and group members are distributed in a 5G cluster system and a 4G cluster system:
step 1: the 5G cluster system terminal carries the cell CALL type as the group CALL, the CALL attribute, the called group number, the voice parameter, the video parameter, etc. through the NAS message container message (CALL REQUEST message). After the core network TCF module analyzes the cluster CALL request message, the PDU session of the user plane is started by the control plane in the core network to establish the voice and video load bearing related to the cluster, synchronously, the GROUP member where the called GROUP number is located is searched, the GROUP member belongs to the GROUP member in the core network system, the base station where the member is located is searched, and the core network sends the GROUP CALL context establishment request message (carrying NAS: GROUP CALL INDICATION) to each base station. If a group member is not in the core network system, sending the group call request message to a 4G B-Trunc core network through a SIP (invite) message of a TC2-C interface; in the specific implementation, after receiving the cluster GROUP CALL request sip (invite) message of the external system, 4G B-TrunC similarly searches for the base station where the GROUP members in the system reside, and sends a GROUP CALL context establishment message (carrying NAS: GROUP CALL INDICATION) to the base station;
step 2: the cluster base station in the 5G core network system to which the calling terminal belongs replies the GROUP calling context establishment request response message, thereby establishing the base station GROUP calling context and starting to periodically send the cluster paging message (carrying NAS: GROUP CALL INDICATION) to the terminal in the base station. Similarly, the cluster base station in the 4G core network of the external system replies a group call context establishment request response message, starts to establish the group call context, and periodically sends a cluster paging message to the terminal in the base station;
and step 3: after the group call is successfully established, the 5G cluster core network replies a DL NAS Transport message (carrying an NAS message container containing a set CALL ACCEPT message) to the calling terminal, establishes a user plane special PDU session for the calling terminal and gives the calling terminal the right of speaking by default;
and 4, step 4: after receiving the relevant message, the calling terminal COMPLETEs the group CALL establishment process through the UL NAS Transport message (carrying the CALL COMPLETE message contained in the NAS message container), namely, the calling terminal can carry out voice or video CALL through the speech right authorized by the core network;
and 5: after receiving the CALL complete message, the 5G trunking core network informs the group CALL receiving trunking terminal that the current speaker completes the speaking right notification process through the DL NAS Transport message (carrying the message FLOOR INFO contained in the NAS message container).
The 5G trunking communication system provided by the present invention is described below, and the 5G trunking communication system described below and the 5G trunking communication method described above may be referred to correspondingly.
Fig. 6 is a schematic structural diagram of a 5G cluster communication system provided in the present invention, as shown in fig. 6, including: an acquisition module 61, a first registration module 62, a first update module 63 and a first establishment module 64; wherein:
the obtaining module 61 is configured to obtain a cluster registration request sent by a terminal; the first registration module 62 is configured to send a registration accepting message to the terminal through a preset NAS registration message if it is determined that the cluster registration request is a legal subscription cluster request; the first updating module 63 is configured to receive a cluster registration completion message of the terminal, update a registration state of the terminal, and send a group update message to the terminal through a preset downlink NAS message; the first establishing module 64 is configured to start a group call establishing process after receiving a preset uplink NAS message of the terminal, and after establishing group call context interaction with the base station, confirm acceptance of group call establishment through the preset downlink NAS message to complete group call establishment.
Fig. 7 is a second schematic structural diagram of a 5G trunking communication system provided by the present invention, as shown in fig. 7, including: a sending module 71, a second registering module 72, a second updating module 73 and a second establishing module 74; wherein:
the sending module 71 is configured to send a cluster registration request to the core network; the second registration module 72 is configured to receive a registration receiving message sent by the core network through a preset NAS registration message if the core network confirms that the cluster registration request is a legal subscription cluster request; the second updating module 73 is configured to reply a cluster registration completion message to the core network, receive a group update message sent by the core network in a preset downlink NAS message after the core network completes updating the registration state of the terminal, and update locally stored group information; the second establishing module 74 is configured to complete group call establishment after receiving the acceptance group call establishment sent by the core network in the downlink NAS message after sending the preset uplink NAS message to the core network.
The invention completes the support of cluster communication related functions by adding a small amount of additional broadband cluster extension NAS information in the NAS container, reduces the change of a terminal protocol stack and also reduces the complexity of system realization.
Fig. 8 illustrates a physical structure diagram of an electronic device, and as shown in fig. 8, the electronic device may include: a processor (processor)810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820 and the memory 830 communicate with each other via the communication bus 840. The processor 810 may invoke logic instructions in the memory 830 to perform a 5G cluster communication method comprising: acquiring a cluster registration request sent by a terminal; if the cluster registration request is confirmed to be a legal signing cluster request, sending a registration receiving message to the terminal through a preset NAS registration message; receiving a cluster registration completion message of the terminal, updating the registration state of the terminal, and sending a group update message to the terminal through a preset downlink NAS message; and after receiving the preset uplink NAS message of the terminal, starting a group call establishment process, and after establishing group call context interaction with the base station, confirming to accept group call establishment through the preset downlink NAS message to complete group call establishment.
In addition, the logic instructions in the memory 830 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, which when executed by a computer, enable the computer to perform the 5G cluster communication method provided by the above methods, the method comprising: acquiring a cluster registration request sent by a terminal; if the cluster registration request is confirmed to be a legal signing cluster request, sending a registration receiving message to the terminal through a preset NAS registration message; receiving a cluster registration completion message of the terminal, updating the registration state of the terminal, and sending a group update message to the terminal through a preset downlink NAS message; and after receiving the preset uplink NAS message of the terminal, starting a group call establishment process, and after establishing group call context interaction with the base station, confirming to accept group call establishment through the preset downlink NAS message to complete group call establishment.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor is implemented to perform the 5G cluster communication method provided in each of the above, the method comprising: acquiring a cluster registration request sent by a terminal; if the cluster registration request is confirmed to be a legal signing cluster request, sending a registration receiving message to the terminal through a preset NAS registration message; receiving a cluster registration completion message of the terminal, updating the registration state of the terminal, and sending a group update message to the terminal through a preset downlink NAS message; and after receiving the preset uplink NAS message of the terminal, starting a group call establishment process, and after establishing group call context interaction with the base station, confirming to accept group call establishment through the preset downlink NAS message to complete group call establishment.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A5G cluster communication method, comprising:
acquiring a cluster registration request sent by a terminal;
if the cluster registration request is confirmed to be a legal signing cluster request, sending a registration receiving message to the terminal through a preset NAS registration message;
receiving a cluster registration completion message of the terminal, updating the registration state of the terminal, and sending a group update message to the terminal through a preset downlink NAS message;
and after receiving the preset uplink NAS message of the terminal, starting a group call establishment process, and after establishing group call context interaction with the base station, confirming to accept group call establishment through the preset downlink NAS message to complete group call establishment.
2. The 5G cluster communication method according to claim 1, wherein the sending the group update message to the terminal through a preset downlink NAS message further comprises:
and granting the calling terminal speaking right to the terminal.
3. The 5G cluster communication method according to claim 1 or 2, wherein the group call setup is completed after receiving a preset uplink NAS message of the terminal, and thereafter further comprising:
and sending a group calling context establishment request message to each base station, and after receiving the group calling context establishment request message replied by at least one base station, sending a trunking paging message to other terminals within the coverage range of the preset base station.
4. The 5G cluster communication method according to claim 1, wherein the preset NAS registration message, the preset downlink NAS message and the preset uplink NAS message are obtained by performing cluster protocol message extension in a NAS container mode or in a cell extending mode based on NAS messages.
5. A5G cluster communication method, comprising:
sending a cluster registration request to a core network;
if the core network confirms that the cluster registration request is a legal signing cluster request, receiving a registration receiving message sent by the core network through a preset NAS registration message;
replying a cluster registration completion message to the core network, receiving a group update message sent by the core network in a preset downlink NAS message after the core network completes updating the registration state of the terminal, and updating the locally stored group information;
and after sending a preset uplink NAS message to the core network and receiving the establishment of the group calling call sent by the core network through the downlink NAS message, finishing the establishment of the group calling.
6. The 5G cluster communication method of claim 5, wherein the updating the locally stored group information further comprises:
and receiving the calling terminal speaking right granted by the core network.
7. A 5G cluster communication system, comprising:
the acquisition module is used for acquiring a cluster registration request sent by a terminal;
the first registration module is used for sending a registration receiving message to the terminal through a preset NAS registration message if the cluster registration request is confirmed to be a legal signing cluster request;
the first updating module is used for receiving the cluster registration completion message of the terminal, updating the registration state of the terminal and sending a group updating message to the terminal through a preset downlink NAS message;
and the first establishing module is used for starting a group calling establishing process after receiving a preset uplink NAS message of the terminal, confirming to accept group calling establishment through the preset downlink NAS message after establishing group calling context interaction with the base station, and finishing group calling establishment.
8. A 5G cluster communication system, comprising:
a sending module, configured to send a cluster registration request to a core network;
a second registration module, configured to receive a registration acceptance message sent by a core network through a preset NAS registration message if the core network determines that the cluster registration request is a legal subscription cluster request;
the second updating module is used for replying a cluster registration completion message to the core network, receiving a group updating message sent by the core network in a preset downlink NAS message after the core network completes updating the registration state of the terminal, and updating the locally stored group information;
and the second establishing module is used for finishing group calling establishment after receiving the acceptance group calling establishment sent by the core network through the downlink NAS message after sending a preset uplink NAS message to the core network.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the 5G cluster communication method according to any of claims 1 to 6 when executing the computer program.
10. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, performs the steps of the 5G cluster communication method according to any of claims 1 to 6.
CN202011438713.8A 2020-12-07 2020-12-07 5G cluster communication method and system Pending CN112738737A (en)

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