CN112751827A - Application method and system of SIP multi-party session in broadband cluster - Google Patents
Application method and system of SIP multi-party session in broadband cluster Download PDFInfo
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- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
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Abstract
The invention provides an application method and a system of SIP multi-party session in a broadband cluster, comprising the following steps: after the TCF cluster scheduling module acquires the NAS signaling, cluster control scheduling processing is carried out according to the NAS signaling; the TCF cluster scheduling module sends data required by SIP coding and decoding to the NST module, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal; and after receiving the SIP message returned by the opposite terminal, the NST module decodes the SIP message to obtain cluster service data, and forwards the cluster service data to the TCF cluster scheduling module. The invention supports the conversation of a plurality of TCF modules of G-TCF and H/V-TCF by one SIP coding and decoding module in the B-TRUNC core network, so that the networking of the B-TRUNC core network is more flexible, and the invention has important economic value and market prospect.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to an application method and an application system of SIP multi-party session in a broadband cluster.
Background
With the development of communication technology, the LTE technology attracts general attention from people due to its characteristics of high-rate transmission, packet transmission, delay reduction, wide-area coverage, downward compatibility, etc., and the demand of industrial users is also increasing, and the demand for broadband data services such as images, videos, etc. is also emerging continuously in addition to the conventional voice services. The traditional narrow-band cluster communication only can provide voice and low-speed data services due to the narrow transmission bandwidth, cannot support the broadband data transmission of video services, and is difficult to meet the visual scheduling command requirement in a complex scene. The broadband trunking communication system enhances the basic service and the supplementary service of a voice trunking, and the functions of broadband trunking services such as multimedia trunking dispatching and the like on the basis of ensuring compatibility of LTE data service, has the characteristics of flexible bandwidth, high spectrum efficiency, low time delay and high reliability, can meet the requirements of professional users on voice trunking, broadband data, emergency command dispatching and the like, and can be applied in the aspects of mobile office, multimedia trunking dispatching, video monitoring, city emergency linkage and the like in a diversified way. Currently, the LTE technology has been applied to public mobile communication networks in a large scale, which lays a solid technical and industrial foundation for the development of broadband trunking communication. Therefore, a broadband TrunC communication (B-TrunC) system based on the LTE technology is also in progress.
The B-trunk system is composed of an LTE broadband trunking terminal, an LTE data terminal, an LTE broadband trunking base station, an LTE broadband trunking core network, and a dispatching station, and the LTE-based broadband trunking system architecture is shown in fig. 1. An LTE broadband Trunking core Network is a Network providing broadband Trunking services, and includes five logical Network elements, namely, an Enhanced Mobility Management Entity (eMME), xGW (Packet Data Network GateWay + Serving GateWay, which is a generic name of Packet Data Network GateWay and Serving GateWay), an Enhanced Home Subscriber Server (eHSS), a Trunking Control Function (TCF), and a Trunking Media Function (TMF), which may be configured to form actual devices according to actual deployment. The TCF is responsible for scheduling and managing the cluster service, and the functions provided by the TCF are as follows: multimedia cluster service scheduling including voice, video and data is supported; authentication and authorization, registration and cancellation of the cluster service; establishing and releasing a cluster call; managing the speaking right; and subscribing and updating cluster group information.
The local network networking of the broadband trunking (B-TrunC) system should support a single core network architecture (as shown in fig. 2), a multi-core network architecture (as shown in fig. 3), and a roaming architecture (as shown in fig. 4). The system open interface comprises a Uu interface, a Uu-T interface, S1, S1-T, D, Tc1, Tc2, S5/S8, S6a and S10 interfaces, and an application protocol, a transmission protocol, a core network interface and an application protocol stack (shown in FIG. 5) used by each interface. The interface D is an interface between the dispatching desk and the cluster core network and provides a cluster dispatching function and a management function. The TC2 interface is an interface between TCF logic units in the cluster core network, realizes communication between LTE broadband cluster core networks, and provides a scheduling function and a management function of a cluster service. The TC2 interface and the D interface adopt SIP protocol to transmit control signaling between cluster core networks, and the user interface adopts RTP protocol to transmit service data such as voice, image, video and the like. And the dispatching of the cluster service and the analysis and assembly of the SIP signaling message are required to be realized on the TCF module signaling plane of the B-TRUNC core network.
In the second phase of the broadband trunking standard, interconnection and intercommunication and roaming among core networks are mainly considered, the performance of the LTE trunking is further optimized, and more LTE trunking functions and services are introduced. According to the management home and the visited place of the cluster user and the group, the TCF can be divided into three roles of H-TCF, V-TCF and G-TCF. The H-TCF is responsible for cluster user management and point-to-point multimedia cluster service scheduling, the V-TCF is a TCF which serves cluster users and is not attributed to users currently, and the G-TCF is responsible for cluster group management and point-to-multipoint multimedia cluster service scheduling. In the B-trunk system, in order to satisfy different networking modes, a broadband Trunking core network system may include an H/V-TCF (HOST/visual Trunking Control Function, home/visited Trunking Control Function) and a G-TCF (Group Trunking Control Function, which is a Trunking service Control plane network element module). In summary, in the B-trunk core network, when a plurality of TCF functions are deployed on one system, at present, there is no B-trunk signaling codec module based on the SIP protocol stack to support multi-party sessions of more than two TCFs simultaneously.
Disclosure of Invention
The invention provides an application method and an application system of SIP multi-party session in a broadband cluster, which are used for solving the defect that the prior art lacks a broadband cluster signaling code based on an SIP protocol stack for simultaneously supporting a plurality of TCF multi-party sessions.
In a first aspect, the present invention provides a method for applying a SIP multiparty session in a broadband cluster, including:
when interconnection and intercommunication are carried out between broadband cluster core networks, after the TCF cluster scheduling module acquires NAS signaling, cluster control scheduling processing is carried out according to the NAS signaling;
when core internetwork communication is to be carried out or cluster signaling is sent to a dispatching desk, the TCF cluster dispatching module sends data required by SIP coding and decoding to an NST module, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal;
and after receiving the SIP message returned by the opposite terminal, the NST module decodes the SIP message to obtain cluster service data, and forwards the cluster service data to the TCF cluster scheduling module.
Further, the NST module and the TCF cluster scheduling module are obtained by:
extracting a TCF module in a broadband trunking communication core network architecture;
and dividing the TCF module into the NST module and the TCF cluster scheduling module, wherein the NST module is responsible for processing message conversion and message management between the NAS and the SIP, and the TCF cluster scheduling module is responsible for processing a cluster control scheduling process.
Further, the NST module includes a message conversion module, a main control module, an SIP state management module, an SIP and SDP module, and an external interface module, wherein: the main control module calls the SIP state management module to realize the searching of the mapping relation among the onlineecalId, the opposite terminal IP, the direction triple and the call of the SIP;
the main control module calls the message conversion module to realize cell conversion between SIP and NAS and internal message receiving and sending;
and the main control module calls the SIP and SDP modules to realize the processing of the SIP event and the sending of the SIP message.
The NST external interface module is the main control module and realizes the sending and receiving of internal messages between the NST external interface module and the TCF;
further, when the interconnection and interworking between the broadband cluster core networks are performed, the method specifically includes that the NST creates a call, the NST performs coding and decoding on the SIP signaling, and the NST finishes the call, wherein:
establishing a call by the NST, wherein the step of establishing a mapping relation between the onlinecall Id and the call of the SIP;
the NST encodes and decodes the SIP signaling, and the call corresponding to the SIP is found according to the onlinecall Id;
the NST call ending comprises deleting the mapping relation.
Further, the inter-core-network communication includes a single call function and a group call function, wherein:
the single call function comprises that a single onlinecall Id corresponds to a plurality of SIP single call flows, and the onlinecall Id, an opposite terminal identifier and an opposite terminal TCF network element identity are used for mapping between the SIP service flow of the NST module and the call of the TCF cluster scheduling function module;
the group calling function comprises a single onlinecall Id, a plurality of SIP group calling and a speaking right management flow which are corresponding, and the establishment and release of the group calling map the SIP service flow of the NST module and the call of the TCF cluster scheduling function module by the onlinecall Id, the opposite terminal identification and the speaking direction;
the call right management process needs to map the SIP service process of the NST module and the call of the TCF cluster scheduling function module with four keywords, i.e., onlinecall Id, opposite terminal identifier (IP or domain name, etc.), call direction (uplink or downlink), and call party identifier (call party UDN).
Further, the NST module is further configured to generate a transit id and a dialogid;
the transit id is used for completing the mapping of each signaling in the call service signaling process, the trunking service updating process and the dispatching desk information subscription signaling process, and the SIP service processes of the TCF trunking dispatching module and the NST module;
and the dialogid is used for completing the mapping of the SIP module subscription and the pushing business process of the TCF cluster scheduling module and the NST module.
Further, the transit ID is a transaction ID in the SIP protocol, and the dialogid is a transaction session ID in the SIP protocol.
In a second aspect, the present invention further provides an application system of SIP multiparty session in broadband cluster, including:
the first processing unit is used for carrying out cluster control scheduling processing according to NAS signaling after the TCF cluster scheduling module acquires the NAS signaling when interconnection and intercommunication are carried out among broadband cluster core networks;
the TCF cluster scheduling module is used for sending data required by SIP coding and decoding to the NST module when core internetwork communication is to be carried out or cluster signaling is sent to the scheduling station, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal;
and the third processing unit is used for decoding the SIP message after the NST module receives the SIP message returned by the opposite terminal to obtain cluster service data, and forwarding the cluster service data to the TCF cluster scheduling module.
In a third 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, where the processor implements the steps of the method for applying the SIP multiparty session in the broadband cluster as described in any one of the above.
In a fourth 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 method for applying a SIP multi-party session in a broadband cluster as described in any one of the above.
The application method and the system of the SIP multi-party session in the broadband cluster provided by the invention can simultaneously support the sessions of a plurality of TCF modules of G-TCF and H/V-TCF through one SIP coding and decoding module in the B-TRUNC core network, so that the networking of the B-TRUNC core network is more flexible, and the method and the system have important economic value and market prospect.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for 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 diagram of a wideband LTE-based trunking system architecture provided in the prior art;
FIG. 2 is a diagram of a local network single core network architecture provided by the prior art;
FIG. 3 is a diagram of a local network multi-core architecture provided by the prior art;
FIG. 4 is a diagram of a roaming architecture provided by the prior art;
FIG. 5 is a diagram of a control panel protocol stack provided by the prior art;
fig. 6 is a schematic flow chart of an application method of SIP multiparty session in a broadband cluster according to the present invention;
FIG. 7 is a schematic diagram of the NST module structure provided by the present invention;
FIG. 8 is a flow chart of group call setup provided by the present invention;
fig. 9 is a schematic structural diagram of an application system of SIP multiparty session in a broadband cluster, provided by the present invention;
fig. 10 is a schematic structural diagram of an electronic device provided by 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.
Aiming at the problems in the prior art, the invention combines the B-TRUNC core network system architecture requirements, divides the cluster scheduling function of the TCF module and the analysis and encapsulation decoupling of the coding and decoding function of the SIP protocol into two sub-modules, solves the corresponding relation between the TCF cluster scheduling sub-module and the calling process of the SIP protocol coding and decoding sub-module (such as single call cluster service, group call and speech right management cluster service), the corresponding relation between the TCF cluster scheduling sub-module and the dialogue process of the SIP protocol coding and decoding sub-module (such as scheduling station subscription cluster service), the corresponding relation between the TCF cluster scheduling sub-module and the transaction process of the SIP protocol coding and decoding sub-module (such as registration and cancellation cluster service, dynamic recombination cluster service, short message cluster service, strong insertion and strong removal cluster service, remote stunning and remote killing cluster service, heartbeat detection cluster service and group information updating cluster service), one SIP protocol coding and decoding sub-function module in the B-TRUNC core network simultaneously supports more than two TCF cluster scheduling function modules, so that the networking of the B-TRUNC core network is more flexible.
Fig. 6 is a schematic flowchart of an application method of SIP multiparty session in a broadband cluster, as shown in fig. 6, including:
s1, when interconnection and intercommunication are carried out between broadband cluster core networks, after the TCF cluster scheduling module acquires NAS signaling, cluster control scheduling processing is carried out according to the NAS signaling;
s2, when core internetwork communication is to be carried out or cluster signaling is sent to a dispatching desk, the TCF cluster dispatching module sends data required by SIP coding and decoding to an NST module, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal;
and S3, after receiving the SIP message returned by the opposite terminal, the NST module decodes the SIP message to obtain cluster service data, and forwards the cluster service data to the TCF cluster scheduling module.
Specifically, when interconnection and intercommunication are carried out between B-TRUNC core networks, the TCF cluster scheduling module firstly carries out cluster control scheduling processing according to NAS signaling, then when communication between the core networks is needed or cluster signaling is sent to a scheduling station, data needed by SIP coding and decoding are sent to the NST module through an internal interface, and the NST module carries out SIP coding and sends the SIP coding to an opposite terminal; meanwhile, the NST module decodes when receiving the SIP message of the opposite terminal, analyzes what cluster service is according to the decoded data, and then forwards the related data in the analyzed SIP signaling to the TCF cluster scheduling module of the NST module through the internal interface.
The invention supports the conversation of a plurality of TCF modules of G-TCF and H/V-TCF by one SIP coding and decoding module in the B-TRUNC core network, so that the networking of the B-TRUNC core network is more flexible, and the invention has important economic value and market prospect.
Based on the above embodiment, the NST module and the TCF cluster scheduling module are obtained by the following steps:
extracting a TCF module in a broadband trunking communication core network architecture;
and dividing the TCF module into the NST module and the TCF cluster scheduling module, wherein the NST module is responsible for processing message conversion and message management between the NAS and the SIP, and the TCF cluster scheduling module is responsible for processing a cluster control scheduling process.
Specifically, according to the functions provided by the TCF module of the B-trunk core network, the TCF module is divided into: an NST (Nas to Sip Translate, Nas protocol/Sip protocol conversion module) module, which mainly handles message conversion and management between Nas and Sip (Nas to Sip Translate); the TCF cluster scheduling module mainly realizes the functions related to cluster control scheduling and is specially used for processing the conversation process of the control plane related to the cluster.
Based on any of the above embodiments, the NST module includes a message conversion module, a main control module, an SIP state management module, an SIP and SDP module, and an external interface module, wherein:
the main control module calls the SIP state management module to realize the searching of the mapping relation among the onlineecalId, the opposite terminal IP, the direction triple and the call of the SIP;
the main control module calls the message conversion module to realize cell conversion between SIP and NAS and internal message receiving and sending;
and the main control module calls the SIP and SDP modules to realize the processing of the SIP event and the sending of the SIP message.
The NST external interface module is the main control module and realizes the sending and receiving of internal messages between the NST external interface module and the TCF;
specifically, as shown in fig. 7, the NST module includes a message conversion module, a main control module, an SIP state management module, an SIP and SDP module, and an external interface module;
the NST module realizes the search of the mapping relation between the onlinecall Id and the call of the SIP, wherein the onlinecall Id is the online session ID of the unique identification session distributed by the cluster core network, uniquely identifies the call in the global scope and corresponds to the Callid in the terminal NAS interface;
the NST module calls an SIP state management module to realize the searching of the mapping relation between the onlinecall Id and the call of the SIP; the NST module calls the message conversion module to realize cell conversion between SIP and NAS and internal message receiving and sending; the NST module calls an SIP/SDP module to realize the processing of the SIP event and the sending of the SIP message; the NST external interface module is used for sending and receiving internal messages between the NST external interface module and the TCF cluster scheduling submodule, and an interface between the NST external interface module and the TCF cluster scheduling submodule needs to carry the onlinecall Id.
Based on any of the above embodiments, when performing interconnection and interworking between broadband cluster core networks, specifically, the method includes that the NST creates a call, the NST performs coding and decoding on the SIP signaling, and the NST finishes the call, wherein:
establishing a call by the NST, wherein the step of establishing a mapping relation between the onlinecall Id and the call of the SIP;
the NST encodes and decodes the SIP signaling, and the call corresponding to the SIP is found according to the onlinecall Id;
the NST call ending comprises deleting the mapping relation.
Specifically, when a call is newly built in the NST, a mapping relation needs to be built between the onlinecall Id and the call of the SIP; when the NST encodes and decodes the subsequent SIP signaling of the call, the call corresponding to the SIP needs to be found according to the onlinecall Id; when this SIP call ends, the NST needs to delete the mapping between the onlinecall Id and the call of the SIP.
Based on any of the above embodiments, the inter-core-network communication includes a single-call function and a group-call function, where:
the single call function comprises that a single onlinecall Id corresponds to a plurality of SIP single call flows, and the onlinecall Id, an opposite terminal identifier and an opposite terminal TCF network element identity are used for mapping between the SIP service flow of the NST module and the call of the TCF cluster scheduling function module;
the group calling function comprises a single onlinecall Id, a plurality of SIP group calling and a speaking right management flow which are corresponding, and the establishment and release of the group calling map the SIP service flow of the NST module and the call of the TCF cluster scheduling function module by the onlinecall Id, the opposite terminal identification and the speaking direction;
the call right management process needs to map the SIP service process of the NST module and the call of the TCF cluster scheduling function module with four keywords, that is, the onlinecall Id, the opposite terminal identifier (IP or domain name, etc.), the call direction (uplink or downlink), and the call party identifier (call party UDN).
Specifically, in the single call function, one onlinecall Id may correspond to multiple single call related flows of the SIP, and three keywords, that is, the onlinecall Id, the opposite terminal identifier (IP or domain name, etc.), and the opposite terminal TCF network element identity (the V-TCF of the calling party, the H-TCF of the calling party, the V-TCF of the called party, and the V-TCF of the called party), are required to map between the SIP service flow of the NST module and the call of the TCF trunking dispatch function module;
in the group call function, the onlinecall Id of one TCF cluster scheduling module may correspond to the SIP group call of multiple NST modules and the related flow of the talk right management. The group call establishment and release needs to map the SIP service flow of the NST module and the call of the TCF cluster scheduling function module by using three keywords, namely an onlinecall Id, an opposite terminal identifier (IP or domain name and the like) and a call direction (uplink or downlink); the speaking right management needs to map the SIP service flow of the NST module and the call of the TCF cluster scheduling function module by using four keywords, namely onlinecall Id, opposite terminal identification (IP or domain name and the like), a speaking direction (uplink or downlink) and speaking party identification (speaking party UDN).
In any of the above embodiments, the NST module is further configured to generate a transit id and a dialogid;
the transit id is used for completing the mapping of each signaling in the call service signaling process, the trunking service updating process and the dispatching desk information subscription signaling process, and the SIP service processes of the TCF trunking dispatching module and the NST module;
and the dialogid is used for completing the mapping of the SIP module subscription and the pushing business process of the TCF cluster scheduling module and the NST module.
Wherein the transit ID is a transaction ID in the SIP protocol, and the dialogid is a transaction session ID in the SIP protocol.
Specifically, for signaling flows of a call service, such as INVITE, 100trying, 183session, 200OK, ACK signaling in a single call flow, mapping of each signaling of SIP service flows of a TCF cluster scheduling module and an NST module may be completed by using a transit ID, where the transit ID is a transaction ID in an SIP protocol and is generated by the NST module, a single call flow is a transaction, and the transaction and the transit ID are in one-to-one correspondence;
for the signaling flows of registration and cancellation, dynamic recombination, short messages, forced insertion and forced removal, remote stun and remote inhibition, heartbeat detection and group information update cluster services, the mapping of the service flow of a TCF cluster scheduling module and the SIP service flow can be completed by using transit id;
for the information subscription signaling process of the dispatching desk, the subscription and the push can use dialogid keywords to complete the mapping of the business process of the TCF cluster dispatching module and the business process of the SIP module subscription and the push, wherein the dialogid is the event dialogue ID in the SIP protocol and is generated by the NST module, one subscription and the push which is continuous in the period time are a dialogue, and the dialogue and the dialogid are in one-to-one correspondence;
for SUBSCRIBE and 200OK signaling, pushed NOTIFY and 200OK signaling of a subscription request, mapping of each signaling of SIP service flows of a TCF cluster scheduling module and an NST module in a scheduling station information subscription signaling flow can be completed by using a transit id.
Based on any of the above embodiments, the embodiments are explained in detail by group calling, in the group calling, the group calling initiator UE is in the roaming location V-TCF (mo UE), the attribution is H-TCF (mo UE), and the group attribution TCF is G-TCF. The other members of the group are in roaming V-TCF (UEs) or home H-TCF (DC). Wherein, the H-TCF and G-TCF of the group call initiator UE share one NST module in one system, as shown in fig. 8:
step 1: after receiving a group call establishment request initiated by a user, a group call initiator V-TCF sends an INVITE message to a group call initiator H-TCF to request group call establishment;
1-1, V-TCF sends INVITE message to H-TCF to request group call establishment;
1-2, after receiving the INVITE message sent by the V-TCF, the NST decodes the SIP signaling, and sends the parameters carried in the INVITE to the H-TCF submodule of the group CALL initiator through an internal interface CALL REQUEST;
step 2: the group call initiator H-TCF returns 100trying to the group call initiator V-TCF;
2-1, the group CALL initiator H-TCF sends the parameters to be filled in the trunking control plane 100Trying message to NST through an internal interface CALL 100 Trying;
2-2, after receiving the internal message, the NST encodes the SIP signaling according to the parameters in the internal message, and sends the encoded SIP signaling to the V-TCF;
and step 3: the group call initiator H-TCF sends an INVITE message to the group affiliation G-TCF to request group call establishment according to number analysis;
3-1, the group CALL initiator H-TCF sends the parameters to be filled in the cluster control plane INVITE message to NST through an internal interface CALL REQUEST;
3-2, after receiving the internal message, the NST encodes the SIP signaling according to the parameters in the internal message, and sends the encoded SIP signaling to the group attribution G-TCF;
3-3, after receiving an external INVITE message, the NST decodes the SIP signaling, and sends the parameters carried in the INVITE to the G-TCF sub-module of the group affiliation through an internal interface CALL REQUEST, wherein the message has transit parameters;
and 4, step 4: the group attribution G-TCF returns 100trying to the group call initiator H-TCF;
4-1, sending parameters required to be filled in a trunking control plane 100Trying message to NST by the group attribution G-TCF through an internal interface CALL 100Trying, wherein the message has transit parameters;
4-2, after receiving the internal message, the NST encodes the SIP signaling according to the parameters in the internal message, and sends the encoded SIP signaling to the group call initiator H-TCF;
4-3, after receiving an external 100Trying message, the NST decodes the SIP signaling, and passes the parameters carried in 100Trying through an internal interface CALL 100Trying group CALL initiator H-TCF sub-module, wherein the message has transit parameters;
and 5: the group affiliation G-TCF generates a call priority and an online call identification code OnlineCall ID, and if a V-TCF where a group member is located is found, an INVITE message is sent to the V-TCF/H-TCF where the group member is located (the member comprises UE and DC) to request group call establishment;
5-1, the group attribution G-TCF sends the parameters required to be filled in the INVITE message of the cluster control plane to NST through an internal interface CALL REQUEST;
5-2, after receiving the internal message, the NST encodes the SIP signaling according to the parameters in the internal message, and sends the encoded SIP signaling to the V-TCF/H-TCF where the group member is located;
step 6: the group member V-TCF/H-TCF returns 100trying to the group attribution G-TCF;
6-1, returning 100trying to the group attribution G-TCF by the group member V-TCF/H-TCF;
6-2, after receiving an external 100Trying message, the NST decodes the SIP signaling, and the parameters carried in the 100Trying are attributed to a G-TCF sub-module through an internal interface CALL 100Trying group, wherein the message has transit parameters;
and 7: after receiving the INVITE signaling, the group member V-TCF/H-TCF returns 200OK to the group attribution G-TCF to indicate that the group call is successfully established;
7-1, returning 200OK to the group attribution G-TCF by the group member V-TCF/H-TCF;
7-2, after receiving an external 200OK message, NST of the group attribution G-TCF decodes the SIP signaling, and establishes a mapping relation between Call service of the TCF scheduling module and SIP service of the NST according to parameters such as onlineecallId, opposite terminal IP, communication direction dir and transid obtained by decoding as keywords, so as to be used for subsequent operations such as talk right management and group Call release, and sends parameters carried in 200OK to a group attribution G-TCF submodule through an internal interface Call response;
and 8: the group attribution G-TCF returns an ACK confirmation;
8-1, the group attribution G-TCF sends the parameters required to be filled in the cluster control plane ACK message to the NST through an internal interface CALL ACK;
8-2, after receiving the internal message, the NST encodes the SIP signaling according to the parameters in the internal ccc message, and sends the encoded SIP signaling to the group member V-TCF/H-TCF;
and step 9: the group attribution G-TCF returns 200OK to the group call initiator H-TCF, indicating that the group call is successfully established;
9-1, sending parameters required to be filled in the OK message of the cluster control plane 200 to NST by the group attribution G-TCF through an internal interface Call response, wherein the internal message comprises parameters onlineecalId, an opposite terminal IP, a communication direction dir, a transit id and the like;
9-2, after receiving the internal message, the NST encodes the SIP signaling according to the parameters in the internal message, and sends the encoded SIP signaling to the group call initiator H-TCF. And a mapping relation to an SIP call is established by taking the onlineecalId, the opposite terminal IP and the communication direction dir as keywords for subsequent operation use such as talk right management, group call release and the like;
9-3, after receiving an external 200OK message, the H-NST decodes the SIP signaling, and sends the parameters carried in the 200OK to the H-TCF submodule of the group Call initiator through an internal interface Call response, wherein the message has transit parameters;
step 10: the group call initiator H-TCF returns 200OK to the group call initiator V-TCF, indicating that the group call is successfully established;
9-1, the group Call initiator H-TCF sends parameters to be filled in the OK message of the cluster control plane 200 to NST through an internal interface Call response, wherein the internal message comprises parameters such as onlineecalId, opposite terminal IP, communication direction dir, transit id and the like;
9-2, after receiving the internal message, the NST encodes the SIP signaling according to the parameters in the internal message, and sends the encoded SIP signaling to the group call initiator V-TCF. And a mapping relation to an SIP call is established by taking the onlineecalId, the opposite terminal IP and the communication direction dir as keywords for subsequent operation use such as talk right management, group call release and the like;
step 11: the group call initiator V-TCF module returns an ACK confirmation message to the group call initiator H-TCF;
11-1, the group call initiator V-TCF returns an ACK confirmation message to the group call initiator H-TCF;
11-2, after receiving an external ACK message, NST decodes SIP signaling, and sends parameters carried in the ACK to the H-TCF submodule of the group CALL initiator through an internal interface CALL ACK;
step 12: the group call initiator H-TCF module returns an ACK confirmation message to the group attribution G-TCF;
12-1, the group CALL initiator H-TCF sends the parameters to be filled in the cluster control plane ACK message to the NST through an internal interface CALL ACK;
12-2, after receiving the internal message, the NST encodes the SIP signaling according to the parameters in the internal message, and sends the encoded SIP signaling to the group attribution G-TCF;
12-3, after receiving an external ACK message, NST decodes SIP signaling, and sends the parameters carried in the ACK to the G-TCF sub-module belonging to the group through an internal interface CALL ACK;
similarly, in the single call process, a mapping relation is established between TCF network elements of SIP in 183Session Progress or 200 OK.
The following describes an application system of the SIP multi-party session in the broadband cluster, and the application system of the SIP multi-party session in the broadband cluster described below and the application method of the SIP multi-party session in the broadband cluster described above may be referred to correspondingly.
Fig. 9 is a schematic structural diagram of an application system of SIP multiparty session in a broadband cluster, as shown in fig. 9, including: a first processing unit 91, a second processing unit 92, and a third processing unit 93; wherein:
the first processing unit 91 is configured to, when interconnection and interworking are performed between broadband cluster core networks, perform cluster control scheduling processing according to NAS signaling after the TCF cluster scheduling module acquires the NAS signaling; the second processing unit 92 is configured to, when core inter-network communication is to be performed or a trunking signaling is sent to the dispatching desk, send data required by SIP encoding and decoding to the NST module by the TCF trunking dispatching module, perform SIP encoding by the NST module, and send the SIP encoding to the opposite end; the third processing unit 94 is configured to, after receiving the SIP message returned by the opposite end, the NST module decodes the SIP message to obtain trunking service data, and forwards the trunking service data to the TCF trunking scheduling module.
The invention supports the conversation of a plurality of TCF modules of G-TCF and H/V-TCF by one SIP coding and decoding module in the B-TRUNC core network, so that the networking of the B-TRUNC core network is more flexible, and the invention has important economic value and market prospect.
Fig. 10 illustrates a physical structure diagram of an electronic device, and as shown in fig. 10, the electronic device may include: a processor (processor)1010, a communication interface (communication interface)1020, a memory (memory)1030, and a communication bus 1040, wherein the processor 1010, the communication interface 1020, and the memory 1030 communicate with each other via the communication bus 1040. Processor 1010 may invoke logic instructions in memory 1030 to perform a method of applying a SIP multiparty session in a broadband cluster, the method comprising: when interconnection and intercommunication are carried out between broadband cluster core networks, after the TCF cluster scheduling module acquires NAS signaling, cluster control scheduling processing is carried out according to the NAS signaling; when core internetwork communication is to be carried out or cluster signaling is sent to a dispatching desk, the TCF cluster dispatching module sends data required by SIP coding and decoding to an NST module, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal; and after receiving the SIP message returned by the opposite terminal, the NST module decodes the SIP message to obtain cluster service data, and forwards the cluster service data to the TCF cluster scheduling module.
Furthermore, the logic instructions in the memory 1030 can 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 a method for applying a SIP multipart session in a broadband cluster, the method comprising: when interconnection and intercommunication are carried out between broadband cluster core networks, after the TCF cluster scheduling module acquires NAS signaling, cluster control scheduling processing is carried out according to the NAS signaling; when core internetwork communication is to be carried out or cluster signaling is sent to a dispatching desk, the TCF cluster dispatching module sends data required by SIP coding and decoding to an NST module, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal; and after receiving the SIP message returned by the opposite terminal, the NST module decodes the SIP message to obtain cluster service data, and forwards the cluster service data to the TCF cluster scheduling module.
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 method for applying the SIP multi-party session in a broadband cluster, the method comprising: when interconnection and intercommunication are carried out between broadband cluster core networks, after the TCF cluster scheduling module acquires NAS signaling, cluster control scheduling processing is carried out according to the NAS signaling; when core internetwork communication is to be carried out or cluster signaling is sent to a dispatching desk, the TCF cluster dispatching module sends data required by SIP coding and decoding to an NST module, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal; and after receiving the SIP message returned by the opposite terminal, the NST module decodes the SIP message to obtain cluster service data, and forwards the cluster service data to the TCF cluster scheduling module.
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. A method for applying SIP multi-party session in broadband cluster is characterized in that the method comprises the following steps:
when interconnection and intercommunication are carried out between broadband cluster core networks, after the TCF cluster scheduling module acquires NAS signaling, cluster control scheduling processing is carried out according to the NAS signaling;
when core internetwork communication is to be carried out or cluster signaling is sent to a dispatching desk, the TCF cluster dispatching module sends data required by SIP coding and decoding to an NST module, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal;
and after receiving the SIP message returned by the opposite terminal, the NST module decodes the SIP message to obtain cluster service data, and forwards the cluster service data to the TCF cluster scheduling module.
2. The method for applying the SIP multiparty session in the broadband cluster according to claim 1, wherein the NST module and the TCF cluster scheduling module are obtained by:
extracting a TCF module in a broadband trunking communication core network architecture;
and dividing the TCF module into the NST module and the TCF cluster scheduling module, wherein the NST module is responsible for processing message conversion and message management between the NAS and the SIP, and the TCF cluster scheduling module is responsible for processing a cluster control scheduling process.
3. The method of claim 1, wherein the NST module comprises a message conversion module, a main control module, an SIP status management module, an SIP and SDP module, and an external interface module, wherein:
the main control module calls the SIP state management module to realize the searching of the mapping relation among the onlineecalId, the opposite terminal IP, the direction triple and the call of the SIP;
the main control module calls the message conversion module to realize cell conversion between SIP and NAS and internal message receiving and sending;
the main control module calls the SIP and SDP modules to realize the processing of the SIP event and the sending of the SIP message;
the NST external interface module is the main control module, and internal message sending and receiving between the NST external interface module and the TCF are achieved.
4. The method for applying the SIP multiparty session in the broadband cluster according to claim 3, wherein when the interconnection and interworking are performed between the broadband cluster core networks, specifically comprising NST new call, NST performing codec on the SIP signaling and NST call ending, wherein:
establishing a call by the NST, wherein the step of establishing a mapping relation between the onlinecall Id and the call of the SIP;
the NST encodes and decodes the SIP signaling, and the call corresponding to the SIP is found according to the onlinecall Id;
the NST call ending comprises deleting the mapping relation.
5. The method of claim 3, wherein the core inter-network communication comprises a single call function and a group call function, and wherein:
the single call function comprises that a single onlinecall Id corresponds to a plurality of SIP single call flows, and the onlinecall Id, an opposite terminal identifier and an opposite terminal TCF network element identity are used for mapping between the SIP service flow of the NST module and the call of the TCF cluster scheduling function module;
the group calling function comprises a single onlinecall Id, a plurality of SIP group calling and a speaking right management flow which are corresponding, and the establishment and release of the group calling map the SIP service flow of the NST module and the call of the TCF cluster scheduling function module by the onlinecall Id, the opposite terminal identification and the speaking direction;
the call right management process needs to map the SIP service process of the NST module and the call of the TCF cluster scheduling function module by using four keywords, namely the onlinecall Id, the opposite terminal identifier, the call direction and the call right identifier.
6. The method for applying the SIP multiparty session in the broadband cluster according to claim 2, wherein the NST module is further configured to generate a transit id and a dialogid;
the transit id is used for completing the mapping of each signaling in the call service signaling process, the trunking service updating process and the dispatching desk information subscription signaling process, and the SIP service processes of the TCF trunking dispatching module and the NST module;
and the dialogid is used for completing the mapping of the SIP module subscription and the pushing business process of the TCF cluster scheduling module and the NST module.
7. The method of claim 6, wherein said transit ID is transaction ID in SIP protocol, and said dialogid is transaction ID in SIP protocol.
8. An application system of SIP multiparty session in broadband cluster, comprising:
the first processing unit is used for carrying out cluster control scheduling processing according to NAS signaling after the TCF cluster scheduling module acquires the NAS signaling when interconnection and intercommunication are carried out among broadband cluster core networks;
the TCF cluster scheduling module is used for sending data required by SIP coding and decoding to the NST module when core internetwork communication is to be carried out or cluster signaling is sent to the scheduling station, the NST module carries out SIP coding and sends the SIP coding to an opposite terminal;
and the third processing unit is used for decoding the SIP message after the NST module receives the SIP message returned by the opposite terminal to obtain cluster service data, and forwarding the cluster service data to the TCF cluster scheduling module.
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 when executing the computer program implements the steps of the method for applying a SIP multiparty session in a broadband cluster according to any of claims 1 to 7.
10. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the steps of a method for applying a SIP multi-party session in a broadband cluster according to any of claims 1 to 7.
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