CN109547492B - Communication method based on block chain and communication system based on block chain - Google Patents

Communication method based on block chain and communication system based on block chain Download PDF

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CN109547492B
CN109547492B CN201910006142.1A CN201910006142A CN109547492B CN 109547492 B CN109547492 B CN 109547492B CN 201910006142 A CN201910006142 A CN 201910006142A CN 109547492 B CN109547492 B CN 109547492B
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node
function entity
user terminal
control function
control point
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CN109547492A (en
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田新雪
马书惠
肖征荣
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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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
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention belongs to the technical field of block chains, and relates to a communication method and a communication system based on a block chain. The method at least comprises the following steps: a calling side mobile switching center inquires the operator membership of a carrying-out user terminal corresponding to a called number and whether the user terminal is a group user or is in the same group private network with the carrying-out user terminal from a service control point node in a preset block chain, and triggers a call to a multimedia telephone service application server corresponding to the called number through the mobile switching center; a call session control function entity in an IMS domain inquires a session resource identifier of a called number from a home location register node through a call session control function entity node in a preset block chain, a call invitation message is sent to a called side call session control function entity and a called side service control point application server, and the called side service control point application server inquires the position of a carrying-out user terminal of a called user. The method can effectively guarantee normal communication of the WVPN users who carry the number and change the network.

Description

Communication method based on block chain and communication system based on block chain
Technical Field
The invention belongs to the technical field of block chains, and relates to a communication method based on a block chain and a communication system based on the block chain.
Background
VoLTE (Voice over LTE, LTE network direct transfer) is a Voice service based on the LTE network data domain of IMS (IP Multimedia Subsystem). IMS consists of all functional entities that can provide multimedia services, enabling operators to offer their subscribers multimedia services based on internet-based applications, services and protocols. The LTE network is an all-IP network, all services are borne on a data domain, and the unification of data and voice services in the same network can be realized. With the development of science and technology, terminals (such as mobile phones and the like) are essential in the life of adults. And along with the continuous improvement of the living quality of people, the consumption experience is required to be higher.
In the prior art, users of network operators (unicom, mobile and telecommunication) include public users and group users, and for the public users, the equipment numbers of the public users are contact telephones; the group users face the whole group service, and the group is used as a user identifier, so that the group users contain a plurality of accounts and a plurality of devices, and the service types of the users are not unique.
In addition, in order to facilitate the personalized experience of the user, the network operator also provides the number portability service, and the user can freely select the network operator providing the service for the user on the premise of keeping the original number. However, this makes operators not only need to perform technical preparation, database construction, and network modification, add corresponding devices, expand and modify existing devices, but also need to solve the problems of charging, number inquiry, and some management, and these technical implementation all require huge investment and also require a certain amount of time. Although the original trust department requires mobile operators to implement the policy of 'take a number and complete a meal', operators in various regions have certain difficulty due to large difference of capability of a support system and fusion of different charging and operation analysis systems, so that a schedule for a plurality of operators to implement the policy comprehensively is greatly delayed. And because of the huge number of mobile phone users in China, especially the particularity of group user service, the implementation of number portability will put higher requirements on the performance of the user information database.
When the existing CS domain terminal voice calls the IMS domain terminal, there is no suitable solution for a user of a mobile Virtual Private Network (WVPN) that carries a number and changes networks. How to realize the normal communication of the WVPN users who carry the number and change the network becomes the problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a block chain based communication method and a block chain based communication system for solving the above-mentioned deficiencies in the prior art, which effectively solve the problem of the number portability WVPN user when the existing CS domain terminal calls the IMS domain terminal by voice, and ensure the normal communication of the number portability group user, i.e. the WVPN user.
The technical scheme adopted for solving the technical problem of the invention is that the communication method based on the block chain is characterized in that when a user terminal calls a carrying-out user terminal which is transferred to a second network by a first network with a number and is in the same group private network with the user terminal, the user terminal is registered in a CS domain as a calling party, the carrying-out user terminal is registered in an IMS domain as a called party, and the calling process comprises the following steps:
the user terminal and the base station establish a radio bearer, and sends a call invitation message to a network side through a calling side call session control function entity, wherein: the call invitation message at least comprises the group short number of the carrying-out user terminal;
a calling side mobile switching center inquires the operator membership of a carrying-out user terminal corresponding to a called number, whether the user terminal is a group user or is in the same group private network with the carrying-out user terminal from a service control point node in a preset block chain, extracts a long number of the carrying-out user terminal, and triggers a call to a multimedia telephone service application server corresponding to the called number through the mobile switching center;
the called side multimedia telephone service application server anchors the call to the IMS domain, and maps the initial address message and the call invitation message through the media gateway control function entity;
a call session control function entity in an IMS domain inquires a session resource identifier of a called number from a home location register node through a call session control function entity node in a preset block chain, and sends a call invitation message to a called side call session control function entity and a called side service control point application server, and the called side service control point application server inquires the position information of a carrying-out user terminal of a called user;
the called side service control point application server sends a call invitation message to a called side call session control function entity to route the called, and the calling user and the called user realize the session through a media gateway control function entity.
Preferably, the calling side service control point inquires about an operator membership of a carry-out user terminal corresponding to a called number, whether the user terminal is a group user or is in a same group private network with the carry-out user terminal from a service control point node in a preset block chain, extracts a long number of the carry-out user terminal, and triggers a call to a multimedia telephone service application server corresponding to the called number through a mobile switching center, including:
the calling side service control point judges whether the calling number and the called number belong to the same group, and inquires that the carried-out user terminal carries the number and changes the network to other network operators, and marks all the information in the triggered call ticket for selecting a routing path in subsequent communication;
the calling side service control point sends a basic call state model event report request to a calling side mobile switching center to request for reporting related events;
the calling side service control point sends an AC message to a calling side mobile switching center;
the calling side service control point sends FCI message to the calling side mobile switching center to inform the service switching point to add related content in the call ticket;
judging that the calling number of the user terminal and the called number of the carrying-out user terminal belong to the same group user through the service control point node in a preset block chain, inquiring a corresponding long number according to the group short number of the carrying-out user terminal, and issuing a connection message to a calling side mobile switching center;
and the calling mobile switching center triggers the call to a called multimedia telephone service application server according to the T-CSI of the carrying-out user terminal.
Preferably, the step of querying, by the call session control function entity in the IMS domain, the session resource identifier of the called number from the home location register node through the call session control function entity node in the preset blockchain, sending the call invite message to the called-side call session control function entity and the called-side service control point application server, and querying, by the called-side service control point application server, the location information of the carry-out user terminal of the called user includes:
a call session control function entity in an IMS domain sends a broadcast message to a home location register node to initiate inquiry and inquire the name authority pointer record of a called number through a call session control function entity node in a preset block chain;
the home location register node returns a session resource label carrying a routing code of the carrying-out user terminal;
the calling side call session control function entity sends the call invitation message to the called side call session control function entity according to the SIP URI of the carrying-out user terminal;
the called side call session control function entity sends a call invitation message to a called side service control point application server according to the iFC information signed by the carrying-out user terminal, and triggers the call to the called side service control point application server;
after receiving the call invitation message, the called side service control point application server acquires a calling number through PAI;
and the called side service control point application server sends the UDR to the attribution signing user server to inquire the position information of the carrying-out user terminal.
Preferably, before the user equipment establishes the radio bearer with the base station, the method further includes the step of constructing a block chain including a plurality of home location register nodes, call session control function entity nodes, and service control point nodes:
an operator registers in the block chain, sends a query request to at least one adjacent node adjacent to the operator through a registration node, receives feedback information fed back by each adjacent node, and determines a created block according to each feedback information, wherein the query request carries information for querying the created block;
the registration node acquires the address of the Ministry of industry and communications node from the Ministry of industry and communications node, and sends an application request carrying operator information for applying to become the block chain to the Ministry of industry and communications node, wherein the application request comprises: the registration node corresponds to: the system comprises a block chain identifier, a public key, a home location register device identifier and number, a session control function entity device identifier and number, and a service control point device identifier and number;
the business and information department node checks the operation qualification of the registered node according to the application request, and when the check is passed, the business and information department node sends broadcast information signed by a private key of the business and information department node to the block chain so as to declare an operator of the block chain formed by the registered nodes and correspondingly configure a home location register node, a session control function entity node and a service control point node, and respectively add the identity information corresponding to the operator to the list information of the home location register node, the session control function entity node and the service control point node;
the business and information department node is provided with a block for storing and updating list information of a home location register node, a session control function entity node and a service control point node corresponding to the operator in real time; the first network and the second network are communication networks corresponding to the operators; the operator's home location register node list includes at least the following information: the method comprises the steps that the identification and the public key of a home location register node are communicated, the identification and the public key of a telecommunication home location register node and the identification and the public key of a mobile home location register node are communicated; the session control function entity node list of the operator at least comprises the following information: the method comprises the steps that an identification and a public key of a session control function entity node of the communication are communicated, an identification and a public key of a session control function entity node of the telecommunication are communicated, and an identification and a public key of a session control function entity node of the mobile are communicated; the session control function entity node list of the operator at least comprises the following information: the identification and public key of the node of the Unicom service control point, the identification and public key of the node of the telecommunication service control point, and the identification and public key of the node of the mobile service control point.
Preferably, the operator belongs to communication jurisdictions of different regions, the block chain includes sub-block chains corresponding to a plurality of different communication jurisdictions, and the list information of the home location register node, the session control function entity node and the service control point node includes a plurality of sub-list information respectively corresponding to the different communication jurisdictions;
the application request further comprises region information of the operator, the Ministry of industry and communications node verifies the region information and the operation qualification corresponding to the registration node of the application request according to the region information in the application request of the operator, and when the verification is passed, the Ministry of industry and communications node sends broadcast information signed by a private key of the Ministry of industry and communications node to the sub-block chain so as to declare that the registration node forms the operator of the sub-block chain, correspondingly configures a home location register node, a session control function entity node and a service control point node, and respectively adds the identity information corresponding to the operator to sub-list information of a jurisdiction home location register node, a session control function entity node and a service control point node of the operator.
Preferably, before the operator registers in the block chain, the method further comprises the following steps:
the Ministry of work node issues a created block of the block chain in the block chain by using its corresponding private key signature, wherein the created block comprises: the identity and the public key of the Ministry of industry and trust node and the identity information of the originator.
A blockchain based communication system, comprising at least: a base station, a mobile switching center, a call session control function entity, a service control point application server, a multimedia telephone service application server and a block chain, when a user terminal calls a portable user terminal which is transferred to a second network by a first network with a number and is in the same group private network with the user terminal, the user terminal is registered in a CS domain as a calling party, the portable user terminal is registered in an IMS domain as a called party,
the user terminal is used for: establishing a radio bearer with the base station, and sending a call invitation message to a network side through a calling side call session control function entity, wherein: the call invitation message at least comprises the group short number of the carrying-out user terminal;
the calling side mobile switching center is used for: inquiring an operator membership of a carrying-out user terminal corresponding to a called number, whether the user terminal is a group user, whether the user terminal and the carrying-out user terminal are in the same group private network, extracting a long number of the carrying-out user terminal, and triggering calling to a multimedia telephone service application server corresponding to the called number through a mobile switching center from a preset service control point node in the block chain;
the called side multimedia telephone service application server is used for: anchoring the call to an IMS domain, and mapping the initial address message and the call invitation information through a media gateway control function entity;
the call session control function entity in the IMS domain is configured to: inquiring a session resource identifier of a called number from a home location register node through a call session control function entity node in a preset block chain, sending a call invitation message to a called side call session control function entity and a called side service control point application server, and inquiring the position information of a carrying-out user terminal of a called user by the called side service control point application server;
the called side service control point application server is used for: and sending the call invitation message to a called side call session control function entity to route the called so as to enable the calling user and the called user to realize the session through the media gateway control function entity.
Preferably, the calling side service control point is configured to: judging whether a calling number and a called number belong to the same group, inquiring whether the carried-out user terminal carries the number and changes the network to other network operators, and marking the information in a triggered call ticket for selecting a routing path in subsequent communication;
the calling side service control point is used for: sending a basic call state model event report request to a calling mobile switching center to request for reporting related events;
the calling side service control point is used for: sending an AC message to a mobile switching center at a calling side;
the calling side service control point is used for: transmitting FCI message to the mobile exchange center at the calling side to inform the service exchange point to add related content in the call ticket;
the service control point node in the preset block chain is configured to: judging that the calling number of the user terminal and the called number of the carrying-out user terminal belong to the same group user, inquiring a corresponding long number according to the group short number of the carrying-out user terminal, and issuing a continuing message to a calling mobile switching center;
the calling side mobile switching center is used for: and triggering the call to a multimedia telephone service application server of the called side according to the T-CSI of the carrying-out user terminal.
Preferably, the call session control function entity in the IMS domain is configured to: sending a broadcast message to the home location register node by the call session control function entity node in a preset block chain to initiate query, and querying a name authority pointer record of a called number;
the home location register node is to: returning a session resource label carrying the routing code of the carrying-out user terminal;
the calling side call session control function entity is used for: according to the SIP URI of the carrying-out user terminal, sending a call invitation message to a called side call session control function entity;
the called side call session control function entity is used for: sending a call invitation message to a called side service control point application server according to the iFC information signed by the carry-out user terminal, and triggering a call to the called side service control point application server;
the called side service control point application server is used for: after receiving the call invitation message, acquiring a calling number through PAI;
the called side service control point application server is used for: and sending the UDR to a home subscriber server to inquire the position information of the carrying-out user terminal.
Preferably, the blockchain comprises a work gateway node and an interface module, wherein:
the interface module is configured to allow an operator to register in the block chain, send a query request to at least one adjacent node adjacent to the operator through a registration node, receive feedback information fed back by each adjacent node, and determine a created block according to each feedback information, wherein the query request carries information for querying the created block;
and the registration node acquires the address of the Ministry of industry and telecommunication node from the created block and sends an application request carrying operator information for applying to become the block chain to the Ministry of industry and telecommunication node, wherein the application request comprises: the registration node corresponds to: the system comprises a block chain identifier, a public key, a home location register device identifier and number, a session control function entity device identifier and number, and a service control point device identifier and number;
the department of industry and trust node is used for: checking the operation qualification of the registered node according to the application request, and when the checking is passed, the Ministry of industry and communications node sends broadcast information signed by a private key of the Ministry of industry and communications node to the block chain so as to declare an operator of the block chain formed by the registered nodes and correspondingly configure a home location register node, a session control function entity node and a service control point node, and respectively add the identity information corresponding to the operator to the list information of the home location register node, the session control function entity node and the service control point node;
the business communication department node is provided with a block for storing and updating the list information of the home location register corresponding to the operator in real time, wherein the block of the list information of the home location register node, the session control function entity node and the service control point node of the operator; the first network and the second network are communication networks corresponding to the operators; the operator's home location register node list includes at least the following information: the method comprises the steps that the identification and the public key of a home location register node are communicated, the identification and the public key of a telecommunication home location register node and the identification and the public key of a mobile home location register node are communicated; the session control function entity node list of the operator at least comprises the following information: the method comprises the steps that an identification and a public key of a session control function entity node of the communication are communicated, an identification and a public key of a session control function entity node of the telecommunication are communicated, and an identification and a public key of a session control function entity node of the mobile are communicated; the session control function entity node list of the operator at least comprises the following information: the identification and public key of the node of the Unicom service control point, the identification and public key of the node of the telecommunication service control point, and the identification and public key of the node of the mobile service control point.
Preferably, the operator belongs to communication jurisdictions of different regions, the block chain includes sub-block chains corresponding to a plurality of different communication jurisdictions, and the list information of the home location register node, the session control function entity node and the service control point node includes a plurality of sub-list information respectively corresponding to the different communication jurisdictions;
the application request further includes regional information of the operator, and the Ministry of industry and telecommunication node is further configured to: and according to the region information in the application request of the operator, checking the region information and the operation qualification corresponding to the registration node of the application request, and when the checking is passed, the Ministry of industry and telecommunication node sends broadcast information signed by a private key of the Ministry of industry and telecommunication node to the sub-block chain so as to declare that the registration node forms the operator of the sub-block chain, correspondingly configures a home location register node, a session control function entity node and a service control point node, and respectively adds the identity information corresponding to the operator to the sub-list information of the administration home location register node, the session control function entity node and the service control point node of the operator.
The invention has the beneficial effects that:
the block chain based communication method and the corresponding block chain based communication system consider the characteristics of group users and the characteristics of carrying out users after carrying out number portability, adopt a block chain mode which is equivalent to establishing a public database, realize the timely synchronization of the data information of the users after carrying out number portability in the data account book of the database center of three current operators and authoritative organizations (Ministry of industry and communications) by a block chain mode, realize the inquiry and operator attribution management corresponding to the long number and the short number of the group users of the original same operator and currently belonging to different operators by using the block chain, introduce and inquire the name authority pointer record of the called number for the carried-out state of the group users, and inquire and return a domain name carrier identifier and an identity label by a home location register node, a service control point node and a calling session control function entity node in the block chain, the method and the system effectively solve the calling problem existing when the VoLTE user is called in the group user number portability service, realize the normal communication with other VoLTE users registered to the CS domain in the group when the group user is carried out and registered to the IMS domain, ensure the normal use of the group user and improve the user experience.
Drawings
Fig. 1 is a flowchart of a block chain based communication method according to an embodiment of the present invention;
fig. 2 is a flowchart of step S200) in fig. 1;
fig. 3 is a flowchart of step S400) in fig. 1;
fig. 4 is a flowchart of building a blockchain in a communication method based on blockchains according to an embodiment of the present invention;
fig. 5 is a block diagram of a block chain based communication system according to an embodiment of the present invention;
in the drawings, wherein:
1-a user terminal; 2-a base station; 3-calling side mobile switching center; 41-calling side call session control function entity; 42-calling side service control point; 51-called side call session control function entity; 52-called side service control point application server; 53-called side multimedia telephony service application server; 6-carrying out the user terminal; 7-blockchain; 8-home location register node; 9-call session control function entity node; 10-service control point node.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the block chain based communication method and the block chain based communication system in detail with reference to the accompanying drawings and the detailed description.
The block chain-based communication method and the corresponding block chain-based communication system provided by the invention aim at the call problem when the VoLTE user is called in the group user number portability service, and realize the normal communication of the WVPN user with number portability based on the block chain account book. Specifically, after the group user carries a number and changes to the network, the VoLTE service is opened, the carried-out number is registered in an IMS domain to be used as a called party, and the group user in the network is used as a solution under a calling scene in a CS domain.
In the communication method based on the block chain, before a calling process that a user terminal calls a carrying-out user terminal which is carried out to a second network by a first network and is in the same group private network with the user terminal is carried out, the block chain comprising a plurality of home location register nodes is firstly constructed.
With reference to fig. 1 and fig. 4, in a possible implementation solution, before step S100), a step of constructing a block chain including a plurality of home location register nodes, call session control function entity nodes, and service control point nodes is further included:
step S00): the industry department node publishes a created block of the block chain in the block chain by using a private key signature corresponding to the industry department node, wherein the created block comprises: the identity and public key of the Ministry of industry and trust node and identity information of the originator.
The Google department node is used as an originator of the local block chain, and distributes a created block of the local block chain in the block chain in a mode of sending broadcast messages, wherein the created block comprises the following contents: the identity and public key of the Ministry of industry and trust node and identity information of the originator. The broadcast message is signed by using a private key of the industrial and information department node and then is broadcast to the block chain network, and the created block is used as the first block of the block chain.
Step S01): an operator registers in a block chain, sends a query request to at least one adjacent node adjacent to the operator through a registration node, receives feedback information fed back by each adjacent node, and determines a created block according to each feedback information, wherein the query request carries information for querying the created block.
In this step, the registered node queries its neighboring nodes for the created blocks of the block chain. Such as: the registered node sends inquiry requests to five nodes adjacent to the registered node, and all five nodes respond to the inquiry requests. That is, the five nodes all inform the registered node of who is the created block. If the feedback information of the five nodes is the same, the first registration node block "a is an established block", and the registration node confirms that the block a is an established block.
However, if three of the five nodes inform the registration node that the created block is the block B and two of the nodes inform the registration node that the created block is the block a, the registration node confirms the block B as the created block. That is, when the feedback information obtained by the registration node is different, the feedback information with the most identical feedback information is selected, and the block corresponding to the feedback information is the created block.
Step S02): the registration node acquires the address of the Ministry of industry and telecommunication node from the created block, and sends an application request carrying operator information for applying to become a block chain to the Ministry of industry and telecommunication node, wherein the application request comprises: corresponding to the registration node: block chain identification, public key, home location register equipment identification and number, session control function entity equipment identification and number, service control point equipment identification and number.
The Home Location Register (HLR) is a data center of the system, and is a database responsible for mobile subscriber management, permanently stores and records subscription data of subscribers in the administrative area, and dynamically updates the Location information of the subscribers, so as to provide network routing of the called subscriber in the call service.
A Call Session Control Function (CSCF) is a functional entity inside an IP Multimedia Subsystem (IMS), and is the core of the entire IMS network. It is mainly responsible for processing the signaling control in the multimedia call session process, managing the user authentication of the IMS network, the QoS of the IMS bearer, the control of SIP session in cooperation with other network entities, service negotiation and resource allocation, etc.
A Service Control Point (SCP) is a core structure of an intelligent network, which is used to store user data and Service logic, and is an intelligent network element that determines how a call is handled, and provides transport and necessary (low-level) application instructions using the TCAP protocol.
In this step, the application request further includes: the operator of the registration node corresponds to: company name, legal representative (name + identification number), registered capital, registered address, business registration number (registration number such as 569876654324567), time of establishment, etc.
Step S03): the business and information department node checks the operation qualification of the registered node according to the application request, and when the check is passed, the business and information department node sends broadcast information signed by a private key of the business and information department node to the block chain so as to declare an operator of the block chain formed by the registered nodes and correspondingly configure a home location register node, a session control function entity node and a service control point node, and respectively add the identity information corresponding to the operator to the list information of the home location register node, the session control function entity node and the service control point node.
The business communication department node has a block for storing and updating list information of home location register nodes, session control function entity nodes and service control point nodes corresponding to operators in real time, and the first network and the second network are communication networks corresponding to different operators.
The business department node locally stores the home location register list information of each operator of one local block chain, and updates the home location register list information of each operator in real time, and the home location register stores permanent user data. The list includes information such as identifiers and public keys of all operator home location register nodes of the block chain, that is, the operator home location register node list at least includes the following information: the method comprises the steps of communicating the identification and the public key of the home location register node, the identification and the public key of the telecom home location register node and the identification and the public key of the mobile home location register node.
The business and communication department node locally stores the list information of the operator call session control function entity of the local block chain, and updates the list information of each operator call session control function entity in real time, wherein the list comprises the identification, the public key and other information of all the operator call session control function entity nodes of the local block chain. That is, the session control function entity node list of the operator at least includes the following information: the method comprises the steps of identifying and public keys of a Unicom Call Session control function entity node, identifying and public keys of a Telecommunications Call Session control function entity node, and identifying and public keys of a Mobile Call Session control function entity node.
The business and correspondence department node locally stores the business control point list information of each operator of one block chain and updates the business control point list information of each operator in real time. The list includes the identification and public key information of all the operation business control point nodes of the local block chain, and prestores the list of group users of the local operator to judge whether the calling number and the called number belong to the same group. That is, the service control point node list of the operator at least includes the following information: the identification and public key of the node of the Unicom service control point, the identification and public key of the node of the telecommunication service control point, and the identification and public key of the node of the mobile service control point.
In a technical solution that may be implemented, when an operator belongs to communication jurisdictions of different regions, a block chain includes sub-block chains corresponding to a plurality of different communication jurisdictions, and list information of a home location register node, a session control function entity node, and a service control point node includes a plurality of sub-list information respectively corresponding to different communication jurisdictions, the method includes the steps of:
the application request also comprises region information of an operator, the Ministry of industry and communications node verifies the region information and operation qualification corresponding to the registration node of the application request according to the region information in the application request of the operator, and when the verification is passed, the Ministry of industry and communications node sends broadcast information signed by a private key of the Ministry of industry and communications node to the sub-block chain so as to announce the operator of the sub-block chain formed by the registration node and correspondingly configure a home location register node, a session control function entity node and a service control point node, and respectively add the identity information corresponding to the operator to the sub-list information of the administration home location register node, the session control function entity node and the service control point node of the operator.
In the step, the whole block chain is divided into regional blocks according to different regions, after the request is received by the Ministry of industry and telecommunication node, the regional block corresponding to the request is determined, so that a home location register node, a session control function entity node and a service control node are generated in the regional block, and the diversified technical effect is realized.
The communication flow between the block chain-based communication method and the corresponding block chain-based communication system when a group user carries out a hand-off to the other network and registers to the IMS domain and users of other CS domains of the local network in the group is described as follows. Specifically, the carrying-out user terminal is used for carrying out number portability and opening VoLTE for WVPN group users, and is used as a called party to provide a solution when the carrying-out user terminal is registered in an IMS domain.
The number portability and number-changing of mobile phone is a mobile telecommunication operator, for example, a mobile phone user with a mobile number can switch to a Chinese telecommunication network or a Chinese communication network to enjoy telecommunication operation services provided by Chinese telecommunication or Chinese communication. The number portability network mainly comprises two types of fixed number portability and mobile number portability. The implementation of number portability is considered a measure of the benefit to all but the consumer, national and telecommunications industries. The number portability is beneficial to consumers and optimizing the market structure, and effective competition is realized and the welfare of the consumers is improved through the control measures of the market. For consumers, the number portability can reduce the network forwarding cost of users; for the country, number portability can save number resources. After the number portability is implemented, the number resources are generally managed by a third party in a centralized way, and social resources are saved.
VoLTE is a standard LTE voice solution defined by GSMA and 3GPP, where GSMA mainly formulates service and function requirements, and 3GPP mainly formulates technical details, such as signaling flow and network function requirements. The core service control network of VoLTE is an IMS (IP multimedia subsystem) network, and is matched with LTE and EPC networks to implement end-to-end voice and video communication services based on packet domains. Through the control of the IMS system, the VoLTE solution can provide voice services and supplementary services thereof with comparable circuit domain performance, including: number display, call forwarding, call waiting, conference calling, etc.
The VoLTE service relates to more and more complex environments of network elements, for example, relates to the circuit domain and the packet domain of the current network, including the deployment and the construction of devices such as LTE, IMS, PCC and the like, and the simplified architecture of the VoLTE network is briefly described as follows:
the VoLTE network includes network elements such AS a base station, a Mobile management entity, a Serving GateWay (S-GW), a packet Data GateWay (pdn), a Home Location Register (HLR)/a Home Subscriber Server (HSS), a Mobile Switching Center (MSC-Server), a Call Session Control Function (CSCF), an IMS domain, an I/S-CSCF, and a multimedia telephony Application Server (MMTel AS), a multimedia telephony Application Server (SCP) -AS (Service Control Point Application Server).
The CS domain upgrades the MSC to support the eSRVCC function, realizes the continuity of the VoLTE voice service through an Sv interface between the CS domain and the mobile management entity and an Mw/I2 interface between the MSC and the ATCF or I-CSCF, and meets the basic requirement of moving out an LTE coverage area in the conversation process to ensure the continuity of the service and smoothly switching the conversation to a 2G/3G network.
The IMS domain mainly performs functions such as call control, service continuity, and domain selection. Wherein, the P/I/S-CSCF supports authentication, signaling security protection, signaling compression and the like; the MMTel-AS supports multimedia telephony and supplementary services, including: number display, call forwarding, call waiting, conference call, etc.; an ATCF/ATGW function is introduced, an SCC-AS function is newly added to support an eSRVCC function to complete voice call continuity control and access/service domain selection, and based on requirements of authentication, service consistency and domain selection, HLR/EPC-HSS/IMS-HSS three devices are required to be fused. Based on the Gx/Rx resynchronization requirement, the addressing requirement from the I/S-CSCF to the converged HSS, and the addressing requirement for the USIM card to export a universal domain name, the DRA device is required to be able to route and address the IMSI or the IMPU with the IMSI.
The user terminal side: the VoLTE user terminal needs to support basic functions such as CSFB (Circuit Switched Fallback) and VoLTE/esvcc (Enhanced Single Radio Voice Call Continuity), and support high-definition Voice/video, supplementary service, and message service.
The wireless side: the base station is mainly responsible for wireless resource management functions, and mainly comprises IP header compression and user data stream encryption, mobile management entity selection when a user terminal is attached, scheduling transmission of paging information, scheduling transmission of broadcast information, setting and measurement for providing the base station, and the like.
EPC domain (Evolved Packet Core): the EPS domain is matched with the IMS domain to complete the discovery of P-CSCF, the establishment of signaling default bearer initially attached, the establishment of service special bearers such as voice, video and the like. A dedicated IMS APN (Access Point Name) is typically used to provide voice services.
The SCP AS is a logic function entity after SCP upgrading, provides intelligent network service logics such AS VPN short number type, number hiding conversion type, charging recharging type, position correlation type, family call control type, information pushing type and the like for VoLTE users, and is used for inheriting the current network intelligent service.
The PCC mainly combines the P-CSCF (AF function point) and GGSN/P-GW (PCEF function point) to complete the policy control decision and the flow-based charging control functions.
The mobile Virtual Private Network (WVPN) provides a logical Private Network to some enterprises and groups by using the resources of 2G/3G/4G Network and fixed Network, so that these enterprises and groups open services to 2G/3G/4G users and PSTN users in the Private Network. The service can give preference to users in a group to a certain degree, and supports flexible numbering function, flexible number display function, flexible dialing mode, closed group user preference, external number group, external calling, flexible control calling, group blocking, user blocking, system dialing forbidding and the like. The WVPN mainly provides cross-provincial V-network services for users in various provinces in the country.
The short number can be freely numbered according to the requirement of a user, and the total length is 3 bits to 7 bits. The mobile phone short numbers in the same short number cluster can not be repeated, and the mobile phone short numbers of different short number cluster networks can be reused. A user is allowed to join only one short number cluster network, and the user must exit from the original cluster when joining another short number cluster. Taking the Unicom trunking network as an example, in the same group, "Global communication trunking network" and "short number trunking network" can coexist, and no preference relationship exists between the two trunking networks. The global customer in the group can choose to join the global cluster network and the short number cluster network at the same time. The short number cluster network and the home network are not mutually exclusive, and a client can simultaneously join a short number cluster network and a short number home network. According to the "best-effort" strategy, the minutes of the call between the users of both the cluster network and the home network are preferably counted into the package minutes in the cluster network.
As shown in fig. 1, in the block chain based communication method, when a user terminal calls a portable user terminal that is ported to a second network (other network) by a first network (home network) and is in a same group private network with the user terminal, the user terminal registers in a CS domain as a calling party and the portable user terminal registers in an IMS domain as a called party, the calling process includes:
step S100): user terminal and base station set up radio bearer, through calling side call session control function entity send call invitation message to network side, wherein: the call invite message includes at least a group short number of the carry-out user terminal.
In the embodiment, two users in the same clique are taken, user a dials user B as an example, the long number of calling user a (user terminal), that is, the real number is 18600001111, the clique short number (V-net short number) is 661111(UE-a 18601101101101111/661111), the long number of called user B (carry-out user terminal) is 13211116789, and the clique short number (V-net short number) is 662222 (UE-B13211116789/662222).
In this step, the method comprises the steps of:
step S101): the user terminal initiates a service request message to the base station.
Step S102): the base station sends a service request message to a Mobile Switching Center (MSC).
Step S103): the mobile switching center receives a call initiated by a calling subscriber A, and triggers the call to a service control point (SCPa) corresponding to a subscriber terminal as the calling subscriber according to a CSI state (for example, an originating O-CSI state) of a calling side. The mobile switching center sends an IDP (Initial DP) to a Service Control Point (SCP), and parameters of the IDP mainly include a service key (a service is uniquely identified between the service switching point SSP and the service control point SCP), a calling number, a called number, a number attribute, and the like. Wherein, a Service Switching Point (SSP): connecting the connection point of the existing mobile network and the intelligent network and providing the function of accessing the intelligent network function set. The SSP requests the SCP to establish an intelligent service control relationship for a call, typically the first message reported to the SCP by the SSP in an intelligent call.
Step S200): the calling side service control point inquires the operator membership of a carrying-out user terminal corresponding to the called number, whether the user terminal is a group user or is in the same group private network with the carrying-out user terminal from a service control point node in a preset block chain, extracts the long number of the carrying-out user terminal, and triggers the calling to a multimedia telephone service application server corresponding to the called number through a mobile switching center.
The blockchain in this embodiment has the following nodes: user node, home location register node (including connected home location register node, telecom home location register node, mobile home location register node) of each operator, business communication department node, call session control function entity node (including connected call session control function entity node, mobile call session control function entity node, telecom call session control function entity node) of each operator, service control point node (including connected service control node, telecom service control node, mobile service control node) of each operator. In the communication process, when a calling party or a called party relates to the calling and the action of a home location register, a call session control function entity and a service control node, the calling party or the called party actively inquires a home location register node, a call session control function entity node and a service control point node of a preset block chain or updates information after execution, so that the latest attribute information of two communication parties in an operator is obtained through respective corresponding list inquiry, the information of the corresponding home location register, the call session control function entity and the service control point in the communication network of the operator is configured according to the latest attribute information, and other network element equipment in the operator is connected.
As shown in fig. 2, in this step, the method includes the steps of:
step S201): the service control point (SCPa) at the calling side judges whether the calling number and the called number belong to the same group through the service control point nodes in the preset block chain, inquires that the called number 662222 of the carrying-out user terminal is carried to other network operators, and marks all the information in the triggered call list for selecting the routing path in the subsequent communication.
Step S202): the service control point (SCPa) at the calling side sends RRBE message (RRBE message is basic call state model event report request) to the mobile switching center to request to report the relevant event.
Step S203): and the calling side service control point (SCPa) issues an AC message to the calling side mobile switching center (MSCa).
Step S204): the service control point (SCPa) at the calling side sends FCI message to the mobile switching center to inform the service switching point to add related content in the call ticket.
Step S205): judging that the calling number of the user terminal and the called number of the carrying-out user terminal belong to the same group user through a service control point node in a preset block chain, inquiring a corresponding long number according to a group short number of the carrying-out user terminal, and issuing a connection message to a mobile switching center.
Step S206): the mobile switching center triggers the call to a MultiMedia Telephony service Application Server (MMTEL AS for short) on the called side according to the T-CSI of the take-out subscriber terminal (receiving end) serving AS the called subscriber B.
Step S300): the called side multimedia telephone service application server anchors the call to the IMS domain, and maps the initial address message and the call invitation message through the media gateway control function entity.
In this step, the method comprises the steps of:
step S301): the called side multimedia telephone service application server returns the corresponding IMRN through the continuing message to anchor the call to the IMS domain, wherein: the IMRN format is to add a fixed prefix before the original called number.
Step S302): the mobile switching center MSCa on the calling side sends an Initial Address (IAM) message to a Media Gateway Control Function (MGCF).
Step S303): the media gateway control function entity maps the initial address message into a call invitation (invite) message, sends the call invitation message to the call session control function entity, and maps the initial address message with the call invitation message, specifically: the callingpartypumber and the addationcallingpartypumber in the initial address message are mapped to FROM and PAI in the call invite message.
Step S400): a call session control function entity in an IMS domain inquires a session resource identifier of a called number from a home location register node through a call session control function entity node in a preset block chain, and sends a call invitation message to a called side call session control function entity and a called side service control point application server, and the called side service control point application server inquires the position information of a carrying-out user terminal of a called user.
As shown in fig. 3, in this step, the steps of:
step S401): the call session control function entity in IMS domain sends broadcast message to home location register node to inquire the name authority pointer record of the called number through the call session control function entity node in the preset block chain.
Step S402): the home location register node returns a Session resource identifier (SIP URI) carrying a routing code of the carry-out user terminal, wherein the SIP is a Session Initiation Protocol (Session Initiation Protocol), the uniform resource identifier is called the SIP URI, the SIP URI is like an E-mail address, and the typical uniform resource identifier comprises a user name and a host name.
Step S403): the calling side call session control function entity transfers the call invitation message to the called side call session control function entity through the network side according to the SIP URI of the carry-out user terminal as the called user, i.e. the call invitation message is sent to the called side call session control function entity (i.e. the user terminal calls the SIP address of the carry-out user terminal through the SIP).
Step S404): and the called side call session control function entity sends a call invitation message to the called side service control point application server according to the iFC information signed by the carrying-out user terminal of the called user, and triggers the call to the called side service control point application server.
Step S405): after receiving the call invitation message, the called side service control point application server obtains the calling number through PAI, and can firstly judge that the calling user dials the short number through FROM, and the called side displays the short number.
Step S406): the called side service control point application server sends UDR to the home subscriber server HSS to inquire the position information of the carrying-out user terminal as the called user.
Step S500): the called side service control point application server sends a call invitation message to a called side call session control function entity to route the called, and the calling user and the called user realize the session through a media gateway control function entity.
In this step, the method comprises the steps of:
step S501): the called side service control point application server sends a call invitation message to a call session control function entity to route the called, if the short number is displayed, the FROM is modified to be the short number of the user terminal of the calling user, and the PAI is the long number of the user terminal of the calling user; if the trombone comes, both FROM and PAI are modified to be the trombone of the user terminal of the calling user.
Step S502): the called side call session control function entity triggers the multimedia telephone service application server, the multimedia telephone service application server provides basic service and routing domain selection, and finally routes the carrying-out user terminal of the called user B.
Step S503): after the carrying-out user terminal of the called user B receives the call invitation message, the V network short number is displayed preferentially according to the FROM header field.
Step S504): and responding through subsequent message interaction of 180ringing, PRACK \200OK, 200OK and the like, and establishing the session.
Step S505): the calling side call session control function entity sends a called response message 200OK to the user terminal of the calling user A, and the user terminal of the calling user A sends a BYE message.
Step S506): and after the service control point application server receives the BYE message, writing a ticket and releasing the session.
Correspondingly, as shown in fig. 5, the present embodiment further provides a block chain based communication system, which at least includes: a base station, a mobile switching center, a call session control function entity, a service control point application server, a multimedia telephone service application server and a block chain, wherein when a user terminal 1 calls a carrying-out user terminal 6 which is transferred to a second network by a first network number portability and is in the same group private network with the user terminal 1, the user terminal 1 is registered in a CS domain as a calling party, and when the carrying-out user terminal 6 is registered in an IMS domain as a called party, the user terminal 1 is used for: establishing a radio bearer with the base station 2, and sending a call invitation message to the network side through the calling side call session control function entity 41, wherein: the call invitation message at least includes the group short number of the carrying-out user terminal 6;
the calling side service control point 42 is configured to: inquiring an operator membership of a carrying-out user terminal 6 corresponding to a called number, whether a user terminal 1 is a group user, whether the user terminal is in the same group private network with the carrying-out user terminal 6, extracting a long number of the carrying-out user terminal 6, and triggering a call to a multimedia telephone service application server corresponding to the called number through a calling side mobile switching center 3 from a service control point node 10 in a preset block chain 7;
the called-side multimedia telephony service application server 53 is configured to: anchoring the call to an IMS domain, and mapping the initial address message and the call invitation information through a media gateway control function entity;
the call session control function entity in the IMS domain is configured to: inquiring a session resource identifier of a called number from a home location register node 8 through a call session control function entity node 9 in a preset blockchain 7, sending a call invitation message to a called side call session control function entity 51 and a called side service control point application server 52, and inquiring the position information of a carrying-out user terminal 6 of a called user by the called side service control point application server 52;
the called-side service control point application server 52 is configured to: sending the call invite message to the called side call session control function 51 routes the called so that the calling subscriber and the called subscriber realize a session via the media gateway control function.
In one possible implementation of the solution according to the invention,
the calling side service control point 42 is configured to: judging whether the calling number and the called number belong to the same group, inquiring whether the carried-out user terminal 6 carries the number and changes the network to other network operators, and marking the information in the triggered call ticket for selecting a routing path in subsequent communication;
the calling side service control point 42 is configured to: a basic call state model event report request is sent to a calling side mobile switching center 3 to request the report of related events;
the calling side service control point 42 is configured to: sending an AC message to the calling side mobile switching center 3;
the calling side service control point 42 is configured to: transmitting FCI message to the calling side mobile exchange center 3 to inform the service exchange point to add relative content in the call ticket;
the service control point node 10 in the preset blockchain 7 is configured to: judging that the calling number of the user terminal 1 and the called number of the carrying-out user terminal 6 belong to the same group user, inquiring a corresponding long number according to the group short number of the carrying-out user terminal 6, and issuing a continuing message to the calling side mobile switching center 3;
the calling side mobile switching center 3 is used for: and triggering the call to the multimedia telephone service application server of the called side according to the T-CSI of the carrying-out user terminal 6.
In one possible implementation of the solution according to the invention,
the call session control function entity in the IMS domain is configured to: sending a broadcast message to a home location register node 8 by a call session control function entity node 9 in a preset block chain to initiate query, and querying a name authority pointer record of a called number;
the home location register node 8 is configured to: returning a session resource identifier (SIP URI) carrying the routing code of the carrying-out user terminal 6;
the calling side call session control function entity 41 is configured to: according to the SIP URI of the carry-out user terminal 6, sending the call invite message to the called side call session control function entity 51;
the called-side call session control function 51 is configured to: according to the iFC information signed by the carry-out user terminal 6, sending a call invitation message to the called side service control point application server 52, and triggering the call to the called side service control point application server 52;
the called-side service control point application server 52 is configured to: after receiving the call invitation message, acquiring a calling number through PAI;
the called-side service control point application server 52 is configured to: and sending the UDR to a home subscriber server to inquire the position information of the take-out user terminal 6.
In one possible implementation, the blockchain includes a work channel node and an interface module, where:
the interface module is configured for an operator to register in the block chain, sends a query request to at least one adjacent node adjacent to the operator through a registration node, receives feedback information fed back by each adjacent node, and determines a created block according to each feedback information, wherein the query request carries information for querying the created block;
and the registration node acquires the address of the Ministry of industry and communications node from the created block and sends an application request carrying operator information for applying to become a block chain to the Ministry of industry and communications node, wherein the application request comprises: corresponding to the registration node: the system comprises a block chain identifier, a public key, a home location register device identifier and number, a session control function entity device identifier and number, and a service control point device identifier and number;
the department of industry and trust node is used for: checking the operation qualification of the registered node according to the application request, and when the checking is passed, sending broadcast information signed by a private key of the Ministry of industry and communications node to the block chain by the Ministry of industry and communications node so as to announce the operator of the block chain formed by the registered node and correspondingly configure a home location register node, a session control function entity node and a service control point node, and respectively adding the identity information corresponding to the operator to the list information of the home location register node, the session control function entity node and the service control point node;
the business and information department node is provided with a block for storing and updating the list information of the home location register corresponding to the operator in real time, wherein the block of the list information of the home location register node, the session control function entity node and the service control point node of the operator; the first network and the second network are communication networks corresponding to an operator;
the home location register node list of the operator at least comprises the following information: the method comprises the steps that the identification and the public key of a home location register node are communicated, the identification and the public key of a telecommunication home location register node and the identification and the public key of a mobile home location register node are communicated; the session control function entity node list of the operator at least comprises the following information: the method comprises the steps that an identification and a public key of a session control function entity node of the communication are communicated, an identification and a public key of a session control function entity node of the telecommunication are communicated, and an identification and a public key of a session control function entity node of the mobile are communicated; the session control function entity node list of the operator at least comprises the following information: the identification and public key of the node of the Unicom service control point, the identification and public key of the node of the telecommunication service control point, and the identification and public key of the node of the mobile service control point.
In a technical scheme that can be realized, an operator belongs to communication jurisdiction areas of different regions, a block chain comprises a plurality of sub-block chains corresponding to the different communication jurisdiction areas, and list information of a home location register node, a session control function entity node and a service control point node comprises a plurality of sub-list information respectively corresponding to the different communication jurisdiction areas;
the application request further includes regional information of the operator, and the Ministry of industry and communications node is further configured to: and checking the region information and the operation qualification corresponding to the registration node of the application request according to the region information in the application request of the operator, sending broadcast information signed by a private key of the Ministry of industry and communications to the sub-block chain by the Ministry of industry and communications node when the checking is passed, announcing that the registration node forms the operator of the sub-block chain, correspondingly configuring a home location register node, a session control function entity node and a service control point node, and respectively adding the identity information corresponding to the operator to the sub-list information of the administration home location register node, the session control function entity node and the service control point node of the operator.
The invention relates to a communication method based on a block chain and a corresponding communication system based on the block chain, which considers the characteristics of group users and the characteristics of carrying out users after carrying out number portability, adopts the block chain mode which is equivalent to establishing a public database, realizes the timely synchronization of the data information of the users after carrying out number portability in the data account book of the database center of three current operators and authoritative institutions (Ministry of industry and communications) by the block chain mode, realizes the inquiry and operator attribution management corresponding to the long number and the short number of the group users of the original same operator and currently belonging to different operators by using the block chain, introduces and inquires the name authority pointer record of the called number for the carried-out state of the group users, and inquires and returns domain name carrying operator identification and identity label by a home location register node, a service control node and a calling session control function entity node in the block chain, the method and the system effectively solve the calling problem existing when the VoLTE user is called in the group user number portability service, realize the normal communication with other VoLTE users registered to the CS domain in the group when the group user is carried out and registered to the IMS domain, ensure the normal use of the group user and improve the user experience.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (9)

1. A communication method based on block chain is characterized in that when a user terminal calls a carrying-out user terminal which is transferred to a second network by a first network number portability and is in the same group private network with the user terminal, the user terminal is registered to a CS domain as a calling party, the carrying-out user terminal is registered to an IMS domain as a called party, and the calling process comprises the following steps:
the user terminal and the base station establish a radio bearer, and sends a call invitation message to a network side through a calling side call session control function entity, wherein: the call invitation message at least comprises the group short number of the carrying-out user terminal;
a calling side mobile switching center inquires the operator membership of a carrying-out user terminal corresponding to a called number, whether the user terminal is a group user or is in the same group private network with the carrying-out user terminal from a service control point node in a preset block chain, extracts a long number of the carrying-out user terminal, and triggers a call to a multimedia telephone service application server corresponding to the called number through the mobile switching center;
the called side multimedia telephone service application server anchors the call to the IMS domain, and maps the initial address message and the call invitation message through the media gateway control function entity;
a call session control function entity in an IMS domain inquires a session resource identifier of a called number from a home location register node through a call session control function entity node in a preset block chain, and sends a call invitation message to a called side call session control function entity and a called side service control point application server, and the called side service control point application server inquires the position information of a carrying-out user terminal of a called user;
the called side service control point application server sends a call invitation message to a called side call session control function entity to route the called, and a calling user and a called user realize a session through a media gateway control function entity;
the step that the call session control function entity in the IMS domain inquires the session resource identifier of the called number from a home location register node through a call session control function entity node in a preset block chain, sends a call invitation message to a called side call session control function entity and a called side service control point application server, and the called side service control point application server inquires the position information of a carrying-out user terminal of a called user comprises the following steps:
a call session control function entity in an IMS domain sends a broadcast message to a home location register node to initiate inquiry and inquire the name authority pointer record of a called number through a call session control function entity node in a preset block chain;
the home location register node returns a session resource label carrying a routing code of the carrying-out user terminal;
the calling side call session control function entity sends the call invitation message to the called side call session control function entity according to the SIP URI of the carrying-out user terminal;
the called side call session control function entity sends a call invitation message to a called side service control point application server according to the iFC information signed by the carrying-out user terminal, and triggers the call to the called side service control point application server;
after receiving the call invitation message, the called side service control point application server acquires a calling number through PAI;
the called side service control point application server sends UDR to the attribution signing user server to inquire the position information of the carrying-out user terminal;
before the user terminal and the base station establish the radio bearer, the method also comprises the steps of constructing a block chain comprising a plurality of home location register nodes, call session control function entity nodes and service control point nodes:
an operator registers in the block chain, sends a query request to at least one adjacent node adjacent to the operator through a registration node, receives feedback information fed back by each adjacent node, and determines a created block according to each feedback information, wherein the query request carries information for querying the created block;
the registration node acquires the address of the Ministry of industry and communications node from the Ministry of industry and communications node, and sends an application request carrying operator information for applying to become the block chain to the Ministry of industry and communications node, wherein the application request comprises: the registration node corresponds to: the system comprises a block chain identifier, a public key, a home location register device identifier and number, a session control function entity device identifier and number, and a service control point device identifier and number;
the business and information department node checks the operation qualification of the registered node according to the application request, and when the check is passed, the business and information department node sends broadcast information signed by a private key of the business and information department node to the block chain so as to declare an operator of the block chain formed by the registered nodes and correspondingly configure a home location register node, a session control function entity node and a service control point node, and respectively add the identity information corresponding to the operator to the list information of the home location register node, the session control function entity node and the service control point node;
the business communication department node is provided with a block for storing and updating the list information of the home location register node, the session control function entity node and the service control point node corresponding to the operator in real time.
2. The communication method according to claim 1, wherein the step of the calling side service control point inquiring about operator membership of a carry-out user terminal corresponding to the called number, whether the user terminal is a group user/is in a same group private network as the carry-out user terminal, and extracting a long number of the carry-out user terminal from a service control point node in a preset block chain, and triggering the call to a multimedia telephony service application server corresponding to the called number through a mobile switching center comprises:
the calling side service control point judges whether the calling number and the called number belong to the same group, and inquires that the carried-out user terminal carries the number and changes the network to other network operators, and marks all the information in the triggered call ticket for selecting a routing path in subsequent communication;
the calling side service control point sends a basic call state model event report request to a calling side mobile switching center to request for reporting related events;
the calling side service control point sends an AC message to a calling side mobile switching center;
the calling side service control point sends FCI message to the calling side mobile switching center to inform the service switching point to add related content in the call ticket;
judging that the calling number of the user terminal and the called number of the carrying-out user terminal belong to the same group user through the service control point node in a preset block chain, inquiring a corresponding long number according to the group short number of the carrying-out user terminal, and issuing a connection message to a calling side mobile switching center;
and the calling mobile switching center triggers the call to a called multimedia telephone service application server according to the T-CSI of the carrying-out user terminal.
3. The communication method according to claim 1 or 2, wherein the first network and the second network are communication networks corresponding to the operators; the operator's home location register node list includes at least the following information: the method comprises the steps that the identification and the public key of a home location register node are communicated, the identification and the public key of a telecommunication home location register node and the identification and the public key of a mobile home location register node are communicated; the session control function entity node list of the operator at least comprises the following information: the method comprises the steps that an identification and a public key of a session control function entity node of the communication are communicated, an identification and a public key of a session control function entity node of the telecommunication are communicated, and an identification and a public key of a session control function entity node of the mobile are communicated; the session control function entity node list of the operator at least comprises the following information: the identification and public key of the node of the Unicom service control point, the identification and public key of the node of the telecommunication service control point, and the identification and public key of the node of the mobile service control point.
4. The communication method according to claim 3, wherein the operator belongs to communication jurisdictions of different regions, the block chain includes sub-block chains corresponding to a plurality of different communication jurisdictions, and the list information of the home location register node, the session control function entity node, and the service control point node includes a plurality of sub-list information respectively corresponding to the different communication jurisdictions;
the application request further comprises region information of the operator, the Ministry of industry and communications node verifies the region information and the operation qualification corresponding to the registration node of the application request according to the region information in the application request of the operator, and when the verification is passed, the Ministry of industry and communications node sends broadcast information signed by a private key of the Ministry of industry and communications node to the sub-block chain so as to declare that the registration node forms the operator of the sub-block chain, correspondingly configures a home location register node, a session control function entity node and a service control point node, and respectively adds the identity information corresponding to the operator to sub-list information of a jurisdiction home location register node, a session control function entity node and a service control point node of the operator.
5. The communication method according to claim 3, further comprising, before an operator registers in the blockchain, the steps of:
the Ministry of work node issues a created block of the block chain in the block chain by using its corresponding private key signature, wherein the created block comprises: the identity and the public key of the Ministry of industry and trust node and the identity information of the originator.
6. A block chain based communication system, comprising at least: a base station, a mobile switching center, a call session control function entity, a service control point application server, a multimedia telephone service application server and a block chain, when a user terminal calls a portable user terminal which is transferred to a second network by a first network with a number and is in the same group private network with the user terminal, the user terminal is registered in a CS domain as a calling party, the portable user terminal is registered in an IMS domain as a called party,
the user terminal is used for: establishing a radio bearer with the base station, and sending a call invitation message to a network side through a calling side call session control function entity, wherein: the call invitation message at least comprises the group short number of the carrying-out user terminal;
the calling side mobile switching center is used for: inquiring an operator membership of a carrying-out user terminal corresponding to a called number, whether the user terminal is a group user, whether the user terminal and the carrying-out user terminal are in the same group private network, extracting a long number of the carrying-out user terminal, and triggering calling to a multimedia telephone service application server corresponding to the called number through a mobile switching center from a preset service control point node in the block chain;
the called side multimedia telephone service application server is used for: anchoring the call to an IMS domain, and mapping the initial address message and the call invitation information through a media gateway control function entity;
the call session control function entity in the IMS domain is configured to: inquiring a session resource identifier of a called number from a home location register node through a call session control function entity node in a preset block chain, sending a call invitation message to a called side call session control function entity and a called side service control point application server, and inquiring the position information of a carrying-out user terminal of a called user by the called side service control point application server;
the called side service control point application server is used for: sending a call invitation message to a called side call session control function entity to route a called so as to enable a calling user and a called user to realize a session through a media gateway control function entity;
the call session control function entity in the IMS domain is configured to: sending a broadcast message to the home location register node by the call session control function entity node in a preset block chain to initiate query, and querying a name authority pointer record of a called number;
the home location register node is to: returning a session resource label carrying the routing code of the carrying-out user terminal;
the calling side call session control function entity is used for: according to the SIP URI of the carrying-out user terminal, sending a call invitation message to a called side call session control function entity;
the called side call session control function entity is used for: sending a call invitation message to a called side service control point application server according to the iFC information signed by the carry-out user terminal, and triggering a call to the called side service control point application server;
the called side service control point application server is used for: after receiving the call invitation message, acquiring a calling number through PAI;
the called side service control point application server is used for: sending the UDR to a home subscriber server to inquire the position information of the carrying-out user terminal;
the block chain comprises a work letter node and an interface module, wherein:
the interface module is configured to allow an operator to register in the block chain, send a query request to at least one adjacent node adjacent to the operator through a registration node, receive feedback information fed back by each adjacent node, and determine a created block according to each feedback information, wherein the query request carries information for querying the created block;
and the registration node acquires the address of the Ministry of industry and telecommunication node from the created block and sends an application request carrying operator information for applying to become the block chain to the Ministry of industry and telecommunication node, wherein the application request comprises: the registration node corresponds to: the system comprises a block chain identifier, a public key, a home location register device identifier and number, a session control function entity device identifier and number, and a service control point device identifier and number;
the department of industry and trust node is used for: checking the operation qualification of the registered node according to the application request, and when the checking is passed, the Ministry of industry and communications node sends broadcast information signed by a private key of the Ministry of industry and communications node to the block chain so as to declare an operator of the block chain formed by the registered nodes and correspondingly configure a home location register node, a session control function entity node and a service control point node, and respectively add the identity information corresponding to the operator to the list information of the home location register node, the session control function entity node and the service control point node;
the business communication department node is provided with a block for storing and updating the list information of the home location register node, the session control function entity node and the service control point node corresponding to the operator in real time.
7. The communication system of claim 6,
the calling side service control point is used for: judging whether a calling number and a called number belong to the same group, inquiring whether the carried-out user terminal carries the number and changes the network to other network operators, and marking the information in a triggered call ticket for selecting a routing path in subsequent communication;
the calling side service control point is used for: sending a basic call state model event report request to a calling mobile switching center to request for reporting related events;
the calling side service control point is used for: sending an AC message to a mobile switching center at a calling side;
the calling side service control point is used for: transmitting FCI message to the mobile exchange center at the calling side to inform the service exchange point to add related content in the call ticket;
the service control point node in the preset block chain is configured to: judging that the calling number of the user terminal and the called number of the carrying-out user terminal belong to the same group user, inquiring a corresponding long number according to the group short number of the carrying-out user terminal, and issuing a continuing message to a calling mobile switching center;
the calling side mobile switching center is used for: and triggering the call to a multimedia telephone service application server of the called side according to the T-CSI of the carrying-out user terminal.
8. The communication system according to claim 6 or 7, wherein the first network and the second network are communication networks corresponding to the operators; the operator's home location register node list includes at least the following information: the method comprises the steps that the identification and the public key of a home location register node are communicated, the identification and the public key of a telecommunication home location register node and the identification and the public key of a mobile home location register node are communicated; the session control function entity node list of the operator at least comprises the following information: the method comprises the steps that an identification and a public key of a session control function entity node of the communication are communicated, an identification and a public key of a session control function entity node of the telecommunication are communicated, and an identification and a public key of a session control function entity node of the mobile are communicated; the session control function entity node list of the operator at least comprises the following information: the identification and public key of the node of the Unicom service control point, the identification and public key of the node of the telecommunication service control point, and the identification and public key of the node of the mobile service control point.
9. The communication system according to claim 8, wherein the operator belongs to communication jurisdictions of different regions, the block chain includes sub-block chains corresponding to a plurality of different communication jurisdictions, and the list information of the home location register node, the session control function entity node, and the service control point node includes a plurality of sub-list information respectively corresponding to the different communication jurisdictions;
the application request further includes regional information of the operator, and the Ministry of industry and telecommunication node is further configured to: and according to the region information in the application request of the operator, checking the region information and the operation qualification corresponding to the registration node of the application request, and when the checking is passed, the Ministry of industry and telecommunication node sends broadcast information signed by a private key of the Ministry of industry and telecommunication node to the sub-block chain so as to declare that the registration node forms the operator of the sub-block chain, correspondingly configures a home location register node, a session control function entity node and a service control point node, and respectively adds the identity information corresponding to the operator to the sub-list information of the administration home location register node, the session control function entity node and the service control point node of the operator.
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