WO2008131617A1

WO2008131617A1 - Method for selecting signalling routes for different service messages and means thereof

Info

Publication number: WO2008131617A1
Application number: PCT/CN2007/003480
Authority: WO
Inventors: Yunxia Cai
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-04-29
Filing date: 2007-12-06
Publication date: 2008-11-06
Also published as: CN101035083A; CN100583833C

Abstract

A method for selecting signalling routes for different service messages and means thereof are provided to determine corresponding signalling routes for service messages of upper layer users by the obtained Service Indicators (SI), Destination Point Codes (DPC) and Originating Point Codes (OPC), which are corresponding to the service messages, thereby the requirement of organizing a network to select different signalling routes for carrying different service messages could be met during the network transition.

Description

Method and device for selecting signaling routing for different service messages

The present invention relates to the field of communications, and in particular to techniques for selecting signaling routes for different service messages. Background technique

With the development of telecom network IP, the traditional signaling network based on TDM (Time Division Multiplexing) bearer is gradually transitioning to IP bearer, based on TMP bearer MTP (Message Transfer Part). The transport protocol evolves to the M3UA (MTP3 User Adapted) transport protocol based on the IP bearer, and the ISUP (ISDN User Part) relay signaling evolves to the BICC (bearer-independent call control protocol) relay signaling. In the evolution process, in order to ensure network stability and business continuity, a gradual evolution method is generally adopted, so that there are cases where different service messages coexist.

For example, as shown in Figure 1, the traditional signaling interaction between the switching office SPA and the switching office SPB is ISUP signaling, which is carried by MTP routing or M3UA routing through the SG (Signaling Gateway). With the development of IP, the ISUP signaling needs to be gradually evolved into BICC signaling directly carried in the VDUA direct-route. Using a step-by-step evolution method, the ISUP trunk circuit is replaced in batches with a BICC trunk circuit, that is, the ISUP message carried on the MTP route (SPA->STP (SG) -> SPB) will be carried The BICC messages on the directly connected M3UA route (SPA->SPB) coexist for a considerable period of time until the ISUP message is finally completely replaced by the BICC message.

In the case where the different service messages coexist, the message delivery part is required to be a different service message of the upper layer user, and different signaling routes are selected, such as selecting a bypassed MTP or M3UA route for the ISUP message; selecting the directly connected M3UA for the BICC message. routing.

The prior art related to the present invention provides a method for selecting a signaling route, wherein a message passing part (MTP or M3UA) according to a DPC (Destination Point Code) in a routing tag of a different service message, OPC (Original Pointing Point Code), Signaling link selection code, selecting the signaling route to the target signaling point. When there are multiple signaling routes between the source signaling point and the target signaling point, load balancing or primary and backup based on priority is adopted: that is, if the signaling routes have the same priority, the service message is composed of multiple signaling. If the priority of the signaling routes is different, the service message first selects the route with the highest priority. When the high-priority route is unavailable, the route with the lower priority is selected.

It can be seen from the prior art that when there are multiple signaling routes between the source signaling point and the target signaling point, different service messages are selected by the same routing mode whether the load sharing mode or the primary backup mode is adopted. Signaling routing, therefore, cannot meet the networking requirements of different signaling routes that are selected for different service messages during network evolution. Summary of the invention

The embodiments of the present invention provide a method for selecting different signaling routes for different service messages, which can meet the networking requirements of different signaling routes that are selected for different service messages during network evolution.

Embodiments of the present invention are implemented by the following technical solutions:

An embodiment of the present invention provides a method for selecting signaling routes for different service messages, including: acquiring a service message identifier, a target signaling point code, and a source signaling point code corresponding to a service message of an upper layer user;

And determining, according to the service message identifier, the target signaling point code, and the source signaling point code, a corresponding signaling route for the service message.

Embodiments of the present invention also provide an apparatus for selecting signaling routes for different service messages, including:

An information acquiring unit, configured to acquire a service message identifier, a target signaling point code, and a source signaling point code in a service message of an upper layer user;

And a route determining unit, configured to determine, according to the service message identifier, the target signaling point code, and the source signaling point code, a corresponding signaling route for the service message.

As can be seen from the specific embodiments provided by the above embodiments of the present invention, A service message identifier, a target signaling point code, and a source signaling point code corresponding to the service message of the upper layer user, and a method for determining a corresponding signaling route for the service message, which can meet the network evolution process and select a bearer for different service messages. Networking requirements for different signaling routes. DRAWINGS

FIG. 1 is a schematic diagram of coexistence of different service messages provided by the background technology;

Figure 2 is a flow chart of the first embodiment of the present invention;

3 is a schematic diagram of a networking structure in a first embodiment of the present invention;

Figure 4 is a schematic structural view of a third embodiment of the present invention;

Fig. 5 is a schematic structural view of a fourth embodiment of the present invention. detailed description

In the M3UA protocol, an AS (Application Server) is a logical entity that serves a specific routing key, such as: processing a specific range of PSTN (Public Switched Telephone Network) trunks (by SIO (Service Information) Octet, service information octet), OPC (originating point code), DPC (Destination Point Code), and CIC (Circuit Identification Code) Virtual switch for calling; or processing all of a specific SCCP (Signaling Connection Control Point) subsystem (defined by SIO, OPC, DPC, SCCP SSN (Subsystem Number) range) HLR (Home Location Register) A virtual database of transactions. These SIO, OP:, DPC, CIC ranges or SCCP SSNs can form a routing key that is identified by a unique routing context. When the M3UA of the signaling gateway SG allocates a message from the SS7 to each AS, the related information, such as SIO, OPC, DPC, CIC, etc., can be obtained from the message, and the routing key is used to form the message. The AS corresponding to the routing context identifier assigned to the routing key.

In addition, the service message of the upper layer user is usually identified by using a service message identifier, and the service message identifier may be an SI (Service Indicator) or the like. Through these identification values, different service messages can be distinguished, for example, SI=5 indicates an ISUP message; and SI=13 indicates a BICC message. Based on the idea that the M3UA selects the function of the AS according to the routing key, and considering the distinguishing method of the service message, the routing key formed by the service message identifier, OPC, and DPC can be utilized to implement different signaling routes for different service messages during the evolution process. Networking requirements.

Based on the above considerations, the first embodiment of the present invention provides a method for selecting different signaling routes for different service messages, which may be configured as follows: According to different service messages between the source signaling point and the target signaling point a service message identifier, determining a plurality of destination entities; the plurality of destination entities are logically independent and having the same target signaling point code, and the source signaling point has an independent letter to the plurality of destination entities Configuring a routing key; configuring a corresponding routing key for the plurality of destination entities according to the service message identifier, OPC, and DPC of the different service messages between the source signaling point and the target signaling point, and establishing the route The correspondence between a key and multiple destination entities. Based on the foregoing configuration, the message passing part matches the service message to the corresponding routing key, and then can select the corresponding destination entity according to the routing key, and implement different services according to the independent routing of the source signaling point to the destination entity. The message selects the networking requirements of different routes. The specific implementation process is shown in Figure 2, including:

Step S101: When the message passing part routes the service message of the upper layer user, the routing message information such as the service message identifier, the OPC, the DPC, and the like is obtained from the service message, and the obtained information is used to form the routing key;

Step S102: Match the routing key with a routing key configured for the multiple destination entities; and select a corresponding one according to the matched routing key and the correspondence between the routing key and multiple destination entities. Destination entity

Step S103: Determine, according to the independent route that the source signaling point has to the destination entity, the corresponding signaling route for the service message sent to the destination entity.

The following describes the first embodiment of the present invention by taking the networking architecture shown in FIG. 3 as an example: It is assumed that the source signaling point is the switching office SPA and the target signaling point is the switching office SPB. The BICC message between the exchange SPA and the exchange SPB is carried by the directly connected M3UA route (SPA->SPB), and the ISUP message between the exchange SPA and the exchange SPB is routed by the bypassed M3UA (SPA->signaling gateway SG->SPB) bearer, according to the service message identifier corresponding to the service message of the upper layer user, such as SI, the SPB is regarded as Two logically independent destination entities DE1, DE2, and have the same destination signaling point code, ie, SPB signaling point coding, with independent signaling between the same source signaling point and the multiple destination entities routing. The corresponding routing key is configured for the destination entity: The routing key of DE1 is determined by routing key information such as SICC, OPC (SPA), DPC (SPB) of BICC, and the signaling route is directly connected M3UA routing: SPA->DE1 The routing key of DE2 is determined by ISUP's SI, OPC (SPA), DPC (SPB), and the route is M3UA looped by the signaling gateway SG: SPA->SG->DE2.

The message passing part, such as the M3UA, after receiving the service message of the upper layer user, if the service message is a BICC message sent by the SPA to the SPB, the routing key formed by the information in the service message can match the route to the DE1. If the key entity knows that the destination entity to be reached is DE1, then the route to DE1 is selected for transmission; if the service message is an ISUP message sent by the SPA to the SPB, the routing key formed by the information in the service message can Matching the routing key to DE2, it knows that the destination entity it wants to reach is DE2, and then selects the route to DE2 to send. In this way, the networking requirements for selecting different M3UA signaling routes for different service messages between the SPA and the SPB are implemented.

The above is described by taking the M3UA routing bearer of the direct connection of the BICC message and the M3UA routing bearer of the ISUP message as an example. For the networking requirement that the BICC message is selected to directly connect the M3UA routing bearer and the ISUP message selects the MTP route, The routing key matching the ISUP message is not set in the above network, so that when the message passing part, such as the M3UA routing ISUP message, cannot match the routing key composed of SI, OPC, DPC of the ISUP message, the ISUP message is sent. Failure, after which the ISUP message is transmitted to the SPB through the MTP routing bearer.

The second embodiment of the present invention provides another method for selecting different signaling routes for different service messages. This embodiment is not implemented by configuring multiple logical independent destination entities with the same signaling point coding. The service message selects the networking requirements of different signaling routes. Rather, it is necessary to first establish a binding relationship between a service message identifier of a different service message between the source signaling point and the target signaling point, and a different path from the source signaling point to the target signaling point. When the message passing part processes the service message of the upper layer user, the service message identifier, the target signaling point code, and the source signaling point code are obtained from the service message, and the obtained source signaling point code and target are utilized. Signaling point coding, determining a source signaling point and a target signaling point; and then according to the between the source signaling point and the target signaling point a service message identifier of the service message, a binding relationship between the source signaling point and the different path of the target signaling point, and obtaining a path of the source signaling point to the target signaling point; The service message is carried by the selected signaling route and transmitted to the target signaling point.

The foregoing embodiment may further construct a routing key according to the service message identifier, the target signaling point code, and the source signaling point code corresponding to the service message between the source signaling point and the target signaling point, and establish that the routing key is the same as the arrival Binding relationship between different signaling routes of the target signaling point. When the message passing part processes the service message of the upper layer user, the service message identifier, the target signaling point code and the source signaling point code are obtained from the service message, and the routing key formed by the obtained information is used to match and arrive. The signaling route of the same target signaling point has a routing key with a binding relationship; then, according to the matched routing key, a corresponding signaling route is selected for the service message to be delivered. Finally, the service message is carried by the selected signaling route and transmitted to the target signaling point.

A third embodiment of the present invention provides an apparatus for selecting signaling routes for different service messages, which corresponds to the method description in the first embodiment. The structure is as shown in FIG. 4, and includes: an information acquiring unit and a route determining unit. . The route determining unit includes a destination entity selecting subunit and a first route determining subunit. The apparatus still further includes a first configuration unit.

The information transfer relationship between each unit is as follows:

The first configuration unit determines a plurality of destination entities according to service message identifiers of different service messages between the source signaling point and the target signaling point; the multiple destination entities are logically independent and have the same target message Point coding, and the source signaling point has an independent signaling route to the destination entity; a service message identifier, OPC and a different service message according to the source signaling point and the target signaling point The DPC configures a corresponding routing key for the multiple destination entities, and establishes a correspondence between the routing key and multiple destination entities.

The information acquiring unit acquires a service message identifier, a target signaling point code, and a source signaling point code in a service message of an upper layer user.

The route determining unit determines a corresponding signaling route for the service message according to the service message identifier, the target signaling point code, and the source signaling point code acquired by the information acquiring unit. It can utilize the obtained service message identifier, target signaling point code, and source corresponding to the service message of the upper layer user. Signaling point coding, forming a corresponding routing key; matching the routing key with a routing key configured for the multiple destination entities; determining a corresponding signaling route for the service message according to the matched routing key . The specific processing situation is as follows:

The destination entity determines the sub-unit, and uses the service message identifier, the target signaling point code, and the source signaling point code corresponding to the service message of the upper-layer user acquired by the information acquiring unit to form a corresponding routing key; Matching with the routing key configured for the multiple destination entities; selecting a corresponding destination entity according to the matched routing key and the correspondence between the routing key and the multiple destination entities;

The first route determining sub-unit determines, according to the destination entity, the destination entity selected by the sub-unit, and determines a corresponding signaling route for the service message sent to the destination entity. Since the source signaling point has an independent signaling route to each destination entity, after selecting the destination entity, the corresponding signaling route can be determined accordingly.

The fourth embodiment of the present invention provides another apparatus for selecting signaling routes for different service messages, which corresponds to the method description in the second embodiment. The structure is as shown in FIG. 5, and includes: information acquiring unit and route determination. unit. The route determining unit includes a signaling point determining subunit and a second route determining subunit. The apparatus still further includes a second configuration unit. The information transfer relationship between each unit is as follows:

The second configuration unit establishes a service message identifier of a different service message between the source signaling point and the target signaling point, and a binding between the source signaling point and the different path of the target signaling point relationship.

a route determining unit, according to the service message identifier, the target signaling point code, and the source signaling point code acquired by the information acquiring unit, and the service message identifier configured between the second configuration unit and the different path Binding relationship, determining a corresponding signaling route for the service message. The specific processing situation is as follows:

a signaling point determining subunit, using the source signaling point acquired by the information acquiring unit Code and target signaling point coding, determining source signaling points and target signaling points;

a second route determining subunit, according to the service message identifier of the different service message between the source signaling point and the target signaling point configured by the second configuration unit, and the source signaling point to the target a binding relationship between different paths of the signaling points, and obtaining a path between the source signaling point and the target signaling point determined by the signaling point determining subunit.

It can be seen from the specific implementation of the foregoing embodiment that the corresponding signaling is determined for the service message by using the obtained service message identifier, the target signaling point code, and the source signaling point code corresponding to the service message of the upper layer user. The routing method can meet the networking requirements of different signaling routes that are selected for different service messages during the network evolution process, and solves the problem of coexistence of IP and TDM bearers in the process of signaling network evolution to IP. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

Rights request

A method for selecting a signaling route for different service messages, the method comprising: acquiring a service message identifier, a target signaling point code, and a source signaling point code corresponding to a service message of an upper layer user;

2. The method of claim 1, further comprising:

Determining a plurality of destination entities according to service message identifiers of different service messages between the source signaling point and the target signaling point; the plurality of destination entities are logically independent and have the same target signaling point code;

And configuring, according to the service message identifier, the target signaling point code, and the source signaling point code of the different service messages between the source signaling point and the target signaling point, configuring corresponding routing keys for the multiple destination entities, And establishing a correspondence between the routing key and multiple destination entities.

The method according to claim 1 or 2, wherein the process of determining a corresponding signaling route for the service message is performed according to the service message identifier, the target signaling point code, and the source signaling point code, Specifically include:

The service message identifier, the target signaling point code, and the source signaling point code corresponding to the obtained service message of the upper layer user are used to form a corresponding routing key;

Matching the routing key with a routing key configured for the multiple destination entities; determining a corresponding signaling route for the service message according to the matched routing key.

The method of claim 3, wherein the determining, by the matching routing key, the process of determining a corresponding signaling route for the service message, specifically includes:

Selecting a corresponding destination entity according to the matched routing key and the correspondence between the routing key and the plurality of destination entities;

Determining a corresponding signaling route for the service message sent to the destination entity according to the independent signaling route that the source signaling point has to the destination entity.

5. The method of claim 1, further comprising:

Establishing a binding relationship between a service message identifier of a different service message between the source signaling point and the target signaling point, and a different path from the source signaling point to the target signaling point.

The method according to claim 1 or 5, wherein the process of determining a corresponding signaling route for the service message is performed according to the service message identifier, the target signaling point code, and the source signaling point code, Specifically include:

Determining a source signaling point and a target signaling point according to the source signaling point coding and the target signaling point coding; according to the service message identifier of the different service message between the source signaling point and the target signaling point, and a binding relationship between the source signaling points and different paths of the target signaling point, and obtaining a path of the source signaling point to the target signaling point.

A device for selecting a signaling route for different service messages, comprising: an information acquiring unit, configured to acquire a service message identifier, a target signaling point code, and a source signaling point code in a service message of an upper layer user. ;

8. The apparatus according to claim 7, further comprising:

a first configuration unit, configured to determine, according to a service message identifier of a different service message between the source signaling point and the target signaling point, multiple destination entities; the multiple destination entities are logically independent and have the same target message Encoding the point, and the source signaling point has an independent signaling route to the destination entity;

And configuring a corresponding routing key for the multiple destination entities according to the service message identifier, the target signaling point code, and the source signaling point code of the different service messages between the source signaling point and the target signaling point; And establishing a correspondence between the routing key and the plurality of destination entities.

The device according to claim 7 or 8, wherein the route determining unit specifically includes:

The destination entity selection sub-unit is configured to use the obtained service message identifier, the target signaling point code, and the source signaling point code corresponding to the service message of the upper-layer user to form a corresponding routing key; The routing key is matched with the routing key configured for the multiple destination entities; the corresponding destination entity is selected according to the matched routing key and the correspondence between the routing key and the multiple destination entities; And a sub-unit, configured to determine, according to the source signaling point to the independent signaling route that the destination entity has, to determine a corresponding signaling route for the service message sent to the destination entity.

The device of claim 7, further comprising:

a second configuration unit, configured to establish a service message identifier of a different service message between the source signaling point and the target signaling point, and a binding between the source signaling point and the different path of the target signaling point relationship.

The device according to claim 7 or 10, wherein the route determining unit comprises:

a signaling point determining subunit, configured to determine a source signaling point and a target signaling point according to the source signaling point coding and the target signaling point coding;

a second route determining subunit, configured to use, according to a service message identifier of a different service message between the source signaling point and the target signaling point, and a different path from the source signaling point to the target signaling point The binding relationship between the two sources is obtained, and the path of the source signaling point to the target signaling point is obtained.