CN102238503A - Calling method, device and communication system - Google Patents

Abstract

The invention relates to the technical field of communication, and discloses a calling method, device and communication system. Wherein the calling method includes: after receiving the first connection message including the called number, sending a second connection message to the mobile switching center, the second connection message including the called number added with the routing number; The first initial address message of the mobile switching center, the first initial address message includes the called number with the added routing number, and the first initial address message is sent by the mobile switching center according to the routing number; If the called number included in the first initial address message corresponds to numbers in at least two domains, respectively initiate calls to numbers in the at least two domains. Using the present invention can reduce call delay and improve user perception.

Description

Call method, device and communication system

technical field

The invention relates to the technical field of communication, in particular to a calling method, device and communication system.

Background technique

The Internet Protocol Multimedia Subsystem (IMS: IP Multimedia Subsystem), as the architecture of the next-generation telecommunication network, is a multi-service application architecture. In the case of multi-service applications, problems of synergy and consistency among various services will inevitably arise. , in order to effectively control and deal with the business interaction problems existing in IMS, the 3rd Generation Partnership Project (3GPP: 3rd Generation Partnership Project) introduced the Service Capability Interaction Management (SCIM: Service Capability interaction Manager service) entity in the IMS system to be responsible for coordinating For business operation, the SCIM entity is also called ServiceBroker.

The SCIM entity is an important service platform for next-generation networks. It has capabilities such as service configuration, service interaction, service combination, service bundling, and service feature conflict resolution. It brings innovative changes to the next-generation network service provision mode. It can quickly Combining services, shortening the service provision cycle, and enriching users' service experience makes the SCIM entity service platform have broad market application prospects. In the case of SCIM entity networking, operators can combine services operating on different networks to form a new service package to enrich user experience. Existing services are not modified at all, only new SCIM entity interaction logic is added to protect the operator's investment to the greatest extent.

In an existing calling method through a SCIM entity, if user A in the circuit-switched (CS: CircuitSwitched) domain calls user B in the packet-switched (PS: Packet Switched) domain, user B subscribes to the one number service , and the number C corresponding to user B is in the CS domain, then the process for user A to call user B is: the call arrives at the SCIM entity from user A in the CS domain, and the SCIM entity routes the call to user B in the PS domain, and then from the PS domain Returning to the SCIM entity, the SCIM entity then routes the call to number C in the CS domain.

Through the above call method, although user A can finally talk to number C, the SCIM entity needs to route the call to the PS domain first, and the PS domain then routes the call back to the CS domain. There are many network elements involved in the call process, so The call route is relatively long, which prolongs the call time and leads to poor user perception.

Contents of the invention

The embodiment of the present invention provides a call method, device and communication system, which can reduce call delay and improve user perception.

An embodiment of the present invention provides a calling method, including:

After receiving the first connection message including the called number, sending a second connection message to the mobile switching center, the second connection message includes the called number with a routing number added;

receiving a first initial address message from the mobile switching center, the first initial address message including the called number added with the routing number, the first initial address message is sent by the mobile switching center according to the routing number number sent;

If the called number included in the first initial address message corresponds to numbers in at least two domains, respectively initiate calls to numbers in the at least two domains.

The embodiment of the present invention also provides a business capability interaction management entity, including:

a receiving unit, configured to receive a first connection message including a called number;

a generating unit, configured to generate a second connection message after the receiving unit receives the first connection message, the second connection message includes the called number with a routing number added;

a sending unit, configured to send the second connection message generated by the generating unit to a mobile switching center;

The receiving unit is further configured to receive an initial address message from the mobile switching center, the initial address message includes the called number with the added routing number, and the initial address message is sent by the mobile switching center according to the sent to the above routing number;

A judging unit, configured to judge whether the called number included in the initial address message received by the receiving unit corresponds to numbers in at least two domains;

The sending unit is further configured to respectively initiate calls to numbers in at least two domains when the judging unit judges that the called number corresponds to numbers in at least two domains.

The embodiment of the present invention also provides a communication system, including the service capability interaction management entity provided by the embodiment of the present invention.

It can be seen from the above technical solutions provided by the embodiments of the present invention that in the embodiments of the present invention, after the SCIM entity receives the first IAM message from the MSC, if the called number included in the first IAM message corresponds to at least two fields , then initiate calls to numbers in at least two domains, thereby avoiding that when the called number included in the first IAM message corresponds to numbers in at least two domains, a call to one domain is first triggered, and the first domain When the call fails, it is triggered to another domain, which can shorten the call routing and reduce the call delay, thereby improving user perception.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the flowchart of the calling method that provides for one embodiment of the present invention;

FIG. 2 is a signaling flow chart of a call method provided by another embodiment of the present invention;

Fig. 3 is a structural diagram of a SCIM entity provided for an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Introduce the calling method that the embodiment of the present invention provides first, Fig. 1 has described the flow chart of the calling method that an embodiment of the present invention provides, what this embodiment described is the processing flow of SCIM entity, and this embodiment comprises:

101. After receiving the first connection (Connect) message including the called number, send a second connection message to the Mobile Switching Center (MSC: Mobile Switching Center), the second connection message includes the called number with the added routing number Number.

Wherein, the received first connection message may come from a service control point (SCP: Service Control Point), and the first connection message includes a calling number and a called number.

After receiving the first connection message, the SCIM entity can generate a second connection message, wherein, specifically, the called number of the first connection message can be added with a routing number (RN: Route Number) to generate the second connection message, namely The only difference between the first connection message and the second connection message is that the called number of the second connection message includes the routing number.

Specifically, the SCIM entity may generate the second connection message only when it is determined that the called number has subscribed to the IMS service.

102. Receive a first initial address (IAM: Initial Address Message) message from the MSC, the first IAM message includes the called number added with the routing number, and the first IAM message is sent by the MSC according to the routing number.

The added routing number corresponds to the SCIM entity, and when the MSC sends the first IAM message according to the called number, it will send the first IAM message to the SCIM entity according to the routing number.

103. If the called number included in the first IAM message corresponds to numbers in at least two domains, respectively initiate calls to numbers in at least two domains.

After receiving the first IAM message, the SCIM entity can obtain the called number after stripping the routing number, and then query the subscription information of the called number. If it is found that the called number will correspond to at least two domain numbers due to the service signed by the called number, then Initiate calls to numbers in at least two domains; for example, when the called number subscribes to the One Number Service, the called number may correspond to numbers in at least two domains. Specifically, initiating calls to numbers in at least two domains respectively may be: initiating calls to numbers in at least two domains at the same time, or initiating calls to numbers in at least two domains in a preset order, or initiating calls to numbers in at least two domains in a random order. Numbers in at least two domains initiate calls, etc.

In an embodiment of the present invention, the at least two domains may include a first domain and a second domain, and then initiating calls to the numbers in the at least two domains respectively includes: sending a first call message to a network element in the first domain, The first call message includes the number in the first domain corresponding to the called number; and sends a second call message to a network element in the second domain, where the second call message includes the number in the second domain corresponding to the called number.

As can be seen from the above, after the SCIM entity receives the first IAM message from the MSC, if the called number included in the first IAM message corresponds to the numbers in at least two domains, then respectively initiate calls to numbers in at least two domains, Therefore, when the called number included in the first IAM message corresponds to numbers in at least two domains, it is avoided that the call is first triggered to a domain, and then triggered to another domain when the call fails in the first domain, which can shorten the call route. Reduce call delay, thereby improving user perception.

In another embodiment of the present invention, after initiating calls to numbers in at least two domains, if a reply message of a number in one of the at least two domains is received, the call to at least two domains is cancelled. A call originating from a number in another domain outside the domain. Therefore, resources occupied by calls initiated to numbers in other domains except one of the at least two domains are released, and the utilization rate of system resources is improved.

Fig. 2 describes a signaling flow chart of a call method provided by another embodiment of the present invention. In this embodiment, at least two domains include a first domain and a second domain, wherein the first domain is a CS domain, and the first The domain network element is an MSC; the second domain is a PS domain, and the second domain network element is a Call Session Control Function (CSCF: CallSession Control Function) entity. This embodiment includes:

201. After the mobile phone user A in the CS domain dials the mobile phone user B in the PS domain, the MSC will send an Initial Detection Point (IDP: Initial Detection Point) message to the SCIM entity.

The IDP message includes calling number A and called number B.

202. The SCIM entity forwards the IDP message to the SCP.

203. The SCP sends a first connection message to the SCIM entity, where the first connection message includes the calling number A and the called number B.

204. When the SCIM entity queries the subscription information and determines that the called number B has signed up for the IMS service, it adds the routing number RN to the called number in the first connection message to generate a second connection message, and sends the second connection message to the MSC. The second connection message includes Calling number A and called number RN+B.

Among them, when the user opens and closes an account, the business management platform (BMP: Business Management Platform) will synchronize the relevant information of the account opening and closing to the SCIM entity, and the relevant information of the account opening and closing includes the user's contract information, so the SCIM entity Whether the called number B has subscribed to the IMS service can be determined according to the subscription information stored by itself.

205. After receiving the Connect, the MSC sends a first IAM message to the SCIM entity according to the routing number, and the first IAM message includes the calling number A and the called number RN+B.

206. After receiving the first IAM message, the SCIM entity strips off the routing number of the called number RN+B to obtain the called number B, and the SCIM entity queries the subscription information to determine that the called number B has subscribed to the One Number service, and the called number B B corresponds to the number C in the CS domain and the number D in the PS domain at the same time, then the SCIM entity initiates two calls at the same time, specifically, sends a second IAM message to the MSC, thereby initiating a call to the number C in the CS domain; sends an invitation to the CSCF entity (Invite) message, so as to initiate a call to the number D in the PS domain, and the CSCF forwards the Invite message to the AS. The second IAM message includes calling number A and called number C, and the Invite message includes calling number A and called number D.

207. After the number C in the CS domain responds, the MSC sends a response message to the SCIM entity. In this embodiment, the response message is an Event Report Basic Call State Model (ERB: Event Report Basic Call State Model) message.

208. After receiving the ERB message, the SCIM entity determines that the number C in the CS domain has answered, so it is necessary to cancel the call initiated to the number D in the PS domain, and the SCIM entity sends a Cancel message to the CSCF entity to remove the connection with the PS domain. connect.

209. The CSCF entity forwards the Cancel message to the service server (AS: Application Server).

210. After the number D in the PS domain responds, the AS sends a response message to the CSCF. In this embodiment, the response message is a confirmation (200 OK) message.

211. The CSCF entity forwards the 200 OK message to the SCIM entity.

212. After receiving the 200 OK message, the SCIM entity determines that the number D in the PS domain has answered, so it needs to cancel the call initiated to the number C in the CS domain, and send a release (Rel) message to the MSC.

Among them, 207-209 and 210-211 can be executed alternatively, that is, after 206, only 207-209 or 210-211 will be executed. In one possible situation, if 210 is executed between 207 and 208, the SCIM entity may send a bye message to the CSCF entity to end the call with the number D in the PS domain; correspondingly, in another possible situation, If 207 is performed between 210 and 211, the SCIM entity may send a bye message to the MSC to end the call with the number C in the CS domain.

It can be seen from the above that, after receiving the first IAM message from the MSC, the SCIM entity can send the number to the number in the CS domain and the number in the PS domain respectively when the called number included in the first IAM message corresponds to the number in the CS domain and the PS domain. The number initiates a call, thereby avoiding the call being routed to the PS domain first, and the PS domain routing the call back to the CS domain, which can shorten call routing, reduce call delay, and improve user perception.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described action sequence. Because of the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

The SCIM entity provided by the embodiment of the present invention is introduced as follows, and FIG. 3 describes the structure of the SCIM entity provided by an embodiment of the present invention, including:

The receiving unit 301 is configured to receive a first connection message including a called number.

The generating unit 302 is configured to generate a second connection message after the receiving unit 301 receives the first connection message, and the second connection message includes the called number added with the routing number.

The sending unit 303 is configured to send the second connection message generated by the generating unit 302 to the MSC.

The receiving unit 301 is further configured to receive an IAM message from the MSC, the IAM message includes the called number added with the routing number, and the IAM message is sent by the MSC according to the routing number.

The judging unit 304 is configured to judge whether the called number included in the IAM message received by the receiving unit 301 corresponds to numbers in at least two domains.

The sending unit 303 is further configured to initiate calls to numbers in at least two domains when the judging unit 304 determines that the called number corresponds to numbers in at least two domains.

As can be seen from the above, after the SCIM entity receives the first IAM message from the MSC, if the called number included in the first IAM message corresponds to the numbers in at least two domains, then respectively initiate calls to numbers in at least two domains, Therefore, when the called number included in the first IAM message corresponds to numbers in at least two domains, it is avoided that the call is first triggered to a domain, and then triggered to another domain when the call fails in the first domain, which can shorten the call route. Reduce call delay, thereby improving user perception.

In another embodiment of the present invention, the above-mentioned at least two domains include the IMS domain. At this time, the judging unit 304 is also used to judge whether the called number subscribes to the IMS domain after the receiving unit 301 receives the first connection message. business. The generating unit 302 is specifically configured to generate the second connection message only when the judging unit 304 judges that the called number has subscribed to the IMS service.

In another embodiment of the present invention, the receiving unit 301 is further configured to receive a response message of a number in one of the at least two domains; the sending unit 303 is further configured to cancel the response message after the receiving unit 301 receives the response message. A call to a number in a domain other than this one of at least two domains. Therefore, resources occupied by calls initiated to numbers in other domains except one of the at least two domains are released, and the utilization rate of system resources is improved.

The embodiment of the present invention also provides a communication system, and the communication system includes the SCIM entity provided by the embodiment of the present invention.

The information interaction and execution process between the above-mentioned devices and modules in the system are based on the same concept as the method embodiment of the present invention, and the specific content can refer to the description in the method embodiment of the present invention, and will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware. The above programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the above-mentioned storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM: Read-Only Memory) or a random access memory (RAM: Random Access Memory), etc.

In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method and thought of the present invention; meanwhile, for those of ordinary skill in the art, according to the present invention Thoughts, specific implementation methods and scope of application all have changes. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims (10)

1. A calling method, characterized in that, comprising: After receiving the first connection message including the called number, sending a second connection message to the mobile switching center, the second connection message includes the called number with a routing number added; receiving a first initial address message from the mobile switching center, the first initial address message including the called number added with the routing number, the first initial address message is sent by the mobile switching center according to the routing number number sent; If the called number included in the first initial address message corresponds to numbers in at least two domains, respectively initiate calls to numbers in the at least two domains. 2. The calling method according to claim 1, wherein the at least two domains comprise a first domain and a second domain; The initiating calls to the numbers in the at least two domains respectively include: sending a first call message to a network element in the first domain, where the first call message includes a number in the first domain corresponding to the called number; Sending a second call message to the network element in the second domain, where the second call message includes the number in the second domain corresponding to the called number. 3. The call method according to claim 2, wherein the first domain is a circuit switched domain, and sending the first call message to the network element in the first domain comprises: sending a second call message to the mobile switching center initial address message; The second domain is a packet switching domain, and sending the second call message to a network element in the second domain includes: sending an invitation message to a call session control function entity. 4. The call method according to claim 3, wherein the packet switching domain is an Internet Protocol Multimedia Subsystem domain; and further comprising before sending the second connection message to the Mobile Switching Center: It is determined that the called number has subscribed to the Internet Protocol Multimedia Subsystem service. 5. The calling method according to any one of claims 2 to 4, characterized in that, after initiating calls to the numbers in the at least two domains respectively, further comprising: If a reply message for a number in one of the at least two domains is received, cancel calls initiated to numbers in other domains of the at least two domains except for the one domain. 6. The call method according to claim 5, wherein the first domain is a circuit switching domain, and the second domain is a packet switching domain; If a response message of a number in one of the at least two domains is received, canceling calls initiated to numbers in other domains in the at least two domains except the one domain includes: If receiving the report call event message sent by the mobile switching center in the circuit switching domain, sending a cancel message to the call session control function entity in the packet switching domain; or If receiving the acknowledgment message sent by the call session control function entity in the packet switching domain, send a release message to the mobile switching center in the circuit switching domain. 7. A business capability interaction management entity, comprising: a receiving unit, configured to receive a first connection message including a called number; a generating unit, configured to generate a second connection message after the receiving unit receives the first connection message, the second connection message includes the called number with a routing number added; a sending unit, configured to send the second connection message generated by the generating unit to a mobile switching center; The receiving unit is further configured to receive an initial address message from the mobile switching center, the initial address message includes the called number with the added routing number, and the initial address message is sent by the mobile switching center according to the sent to the above routing number; A judging unit, configured to judge whether the called number included in the initial address message received by the receiving unit corresponds to numbers in at least two domains; The sending unit is further configured to respectively initiate calls to numbers in at least two domains when the judging unit judges that the called number corresponds to numbers in at least two domains. 8. The service capability interaction management entity according to claim 7, wherein the at least two domains comprise an Internet Protocol Multimedia Subsystem domain; The judging unit is further configured to judge whether the called number has subscribed to the Internet Protocol Multimedia Subsystem service after the receiving unit receives the first connection message; The generating unit is configured to generate the second connection message when the judging unit judges that the called number has subscribed to an Internet Protocol Multimedia Subsystem service. 9. The service capability interaction management entity according to claim 7 or 8, wherein the receiving unit is further configured to receive a response message of the number of one of the at least two domains; The sending unit is further configured to, after the receiving unit receives the answer message, cancel calls initiated to numbers in other domains in the at least two domains except the one domain. 10. A communication system, characterized by comprising the service capability interaction management entity according to any one of claims 7 to 9.

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