CN101207615A - Method for extending M3UA route supervision function - Google Patents

Abstract

The invention discloses an expanding method of the M3UA routing management function, which comprises the following steps: an M3UA protocol is used; a routing keyword and application servers are set up at signaling points or signaling transfer points. The application servers are in direct or quasi-direct connection with each other; when in direct connection, the application server processes have a signaling link between a source signaling point and a target signaling point; when in quasi direct connection, the application server processes have a signaling link between a source signaling point and a signaling transfer point; the application server processes, or signaling gateway processes and IP serve processes are set up; a routing and the priority of the routing are set up for a routing key word; the routing is used to manage message and exchange routing information between signaling points or signaling transfer points; the signaling points or the signaling transfer points maintain the own routing lists according to the routing management information received together with the routing status of adjacent signaling points.

Description

M3UA routing management function expansion method

Technical field

The present invention relates to the expansion technique of the M3UA of a kind of IP signaling system, have, relate to a kind of M3UA routing management function expansion method.

Background technology

Traditional based on Circuit-switched communication network in, a large amount of No.7 signalling system (SSNo.7 that use, Signaling System No.7) finishes the exchange of control information, and along with the extensive use of IP network and the target how net is unified, the demand that the fusion of circuit-switched network and IP packet switching network occurred and in the IP packet network, transmitted traditional signaling message, (the ETF of Internet engineering duty portion for this reason, The Internet Engineering Task Force) formulated Sigtran (IP SignalingTransfer, the IP signaling transmission) series of canonical is comprising multiple adapting protocol M3UA.

In traditional No.7 signaling system, ITU (International Telecommunication Union) has stipulated the routing management function and the relevant flow process of signaling network in MTP L3 standard.Use forbids transmitting signaling (TFP, Transfer-prohibited signal), controlled transmission signaling (TFC, Transfer-controlled signal), allow to transmit signaling (TFA, Transfer-allowed signal) message such as, finish the broadcast announcement of routing state, thereby make relevant signalling point finish the routing management function of oneself to relevant signalling point.

The new Sigtran system that proposes, pay close attention to the adaptive end to end transmission of signaling message more, current the most frequently used L3 adapting protocol M3UA has also only described SGW (SG, Signal Gateway) and Internet Protocol signaling point (IPSP, Signaling Point) routing management between, and lacking, and the function of the Signaling Route Management between STP and the STP at IP signaling network internal signalling point (SP) and Signaling Transfer Point.

Summary of the invention

Technical problem solved by the invention provides a kind of M3UA routing management function expansion method, has expanded M3UA routing management function, has finished the management of signaling network route in the IP signaling network.

Technical scheme is as follows:

M3UA routing management function expansion method step is as follows:

(1) uses M3UA;

(2) routing key, application server are set on signalling point or Signalling Transfer Point; Between the described application server direct connection or collimation connection mode; Under associated mode, application server process has signaling to be connected between Original Signaling Point and destination signaling point; Under collimation connection mode, application server process has signaling to be connected between Original Signaling Point and transit point;

(3) application server process is set, perhaps signaling gateway process and IP service processes; And the priority of route and route is set for routing key;

(4) between described signalling point or Signalling Transfer Point, use routing management message routing iinformation; Signalling point or Signalling Transfer Point be according to the routing management message that receives, and in conjunction with the routing table of the state-maintenance oneself of adjacent signaling points route.

Further, in the step (4), when the starting stage that signalling point starts, all collimation connection routes are all unavailable, and the availability of direct connection route is managed according to the state of application server and application server process by SPMC; Described SPMC is used for determining the state of adjacent signaling points, finishes the adaptive transmission of signaling message.

Further, in the step (4), when signalling point broadcast transmission DAUD message, determine oneself collimation connection route to corresponding signalling point according to the response message of receiving.

Further, in the step (4), when Signalling Transfer Point sends DAVA message, the signalling point that broadcasting communicates by oneself.

Further, in the step (4), when Signalling Transfer Point sends DUNA message, the signalling point that broadcasting can't communicate by oneself.

Further, in the step (4), when Signalling Transfer Point sent DRST message, broadcasting was by oneself communicating restricted signalling point.

Further, in the step (4), when Signalling Transfer Point sent SCON message, there was congested signalling point in broadcasting by oneself communicating.

Further, in the step (4), when Signalling Transfer Point sent DUPU message, broadcasting was unreachable to the User Part of signalling point by oneself.

The inventive method can be expanded the M3UA routing management function of present standard, in the IP signaling network, finished the management of signaling network route, routing management can be all signalling points that can discern, rather than be confined to the associated signaling point, for the stable operation of IP network provides the reliability guarantee, advanced the development of IP network.

Description of drawings

Fig. 1 is a kind of schematic network structure that the present invention is suitable for;

Fig. 2 is a M3UA routing management expanded function flow chart in the IP network;

Fig. 3 is that Internet Protocol signaling point IPSP is to IPSTP inquiry route schematic diagram for information about;

Fig. 4 is the IP signaling transit point sends a schematic diagram from DAVA message to the adjacency signalling point;

Fig. 5 is the IP signaling transit point sends a schematic diagram from DUNA message to the adjacency signalling point;

Fig. 6 is the IP signaling transit point sends DRST message or a schematic diagram from DUNA message to the adjacency signalling point;

Fig. 7 is the IP signaling transit point sends a schematic diagram from SCON message to the adjacency signalling point;

Fig. 8 is the IP signaling transit point sends a schematic diagram from DUPU message to the adjacency signalling point.

Embodiment

The present invention is to M3UA (the MTP3-User Adapter of IP signaling system, MTP3 user is adaptive) the routing management function expands, on the existing protocol basis, proposed to finish IP signaling network internal signalling point (SP at M3UA, Signal Point) and Signalling Transfer Point (STP, Signal Transfer Point) and the method for the Signaling Route Management between STP and the STP, be applicable to NGN (Next GenerationNetwork, next generation network).Between IP signaling network internal SP and STP, and finish the routing management function between STP and the STP, signalling point according to be determined to the routing state of quasi associated signaling point through the routing iinformation of Signalling Transfer Point, M3UA determines oneself routing table according to these information, finishes the function of routing management.

In using the IP signaling network of M3UA, signalling point is determined the state of adjacent signaling points according to signaling point management cluster (SPMC, Signaling Point Management Cluster), finishes the adaptive transmission of signaling message.

As shown in Figure 1, in the IP signaling network configuration, IPSP1, IPSP2, IPSP3, IPSP4 are the Internet Protocol signaling point (IPSP in the IP network, IP Signaling Point), wherein IPSP2 and IPSP3 have IP signaling transit point (IPSTP, IP Signaling Transfer Point) function, link to each other with IPSP3 by IPSP2 between IPSP1 and the IPSP4, all be to use the M3UA adapting protocol to finish communication process between any 2, comprise the C chain (link between the Signalling Transfer Point in pairs) between IPSP2 and the IPSP3.

Simultaneously, IPSP2 and IPSP3 had both had the Signalling Transfer Point function, also had correspondence, can finish signaling communication.Signaling communication between IPSP1 and the IPSP4 is to finish by Signalling Transfer Point (IPSP2 or IPSP3), can not use the direct connection correspondence between IPSP1 and the IPSP4 simultaneously.

Under associated mode, (Application Server Process ASP) has signaling to be connected between Original Signaling Point and destination signaling point to application server process, for example between IPSP1 and the IPSP2, perhaps has signaling to connect between IPSP1, the IPSP3; Under collimation connection mode, ASP has signaling and is connected between Original Signaling Point and Signalling Transfer Point, the connection of the collimation between IPSP1 and the IPSP4 for example, and being actually has the signaling connection between IPSP1 and IPSP2, the IPSP3.

As shown in Figure 2, M3UA routing management function expansion method concrete steps are as follows:

1, uses M3UA.

This use M3UA is used to finish the signalling point of IP signaling network internal and the communication between the Signalling Transfer Point, perhaps is used to finish the communication between Signalling Transfer Point and the Signalling Transfer Point.

IPSP1, IPSP2, IPSP3, IPSP4 adopt M3UA to finish communication between any two.

2, routing key, application server are set on signalling point or Signalling Transfer Point.

Between the application server direct connection or collimation connection mode.Under associated mode, application server process has signaling to be connected between Original Signaling Point and destination signaling point; Under collimation connection mode, application server process has signaling to be connected between Original Signaling Point and transit point.

3, ASP (perhaps SGP and IP service processes) is set, and the priority of route and route is set for routing key.

In the IP signaling network, adjacent signaling points and Signalling Transfer Point are set on signalling point or Signalling Transfer Point, and relevant routing key and application server (AS, Application Server, a kind of logic entity of serving routing key), application server process (ASP, ApplicationServer Process) is set, or signaling gateway process (SGP, Signaling Gateway Process) and IP Server Process be set.Wherein, ASP, SGP, IP Server Process provide service for AS.

AS can be an associated mode, also can be collimation connection mode.Under associated mode, ASP has signaling to be connected between Original Signaling Point and destination signaling point, and under collimation connection mode, ASP has signaling to be connected between Original Signaling Point and Signalling Transfer Point.In the present embodiment, IPSP1 is provided with the two-stage route to IPSP4, it is all unavailable that signalling point starts all collimation connection routes of starting stage, the availability of direct connection route by SPMC according to relevant application server (AS, Application Server) and application server process (ASP, Application Server Process)) management finish.

4, between signalling point or Signalling Transfer Point, use routing management message routing iinformation.

In the IP signaling network, signalling point or Signalling Transfer Point be according to the routing management message that receives, and in conjunction with the routing table of the state-maintenance oneself of adjacent signaling points direct connection route.

With reference to following several situations, route management information and routing management process are described in detail.

Situation one

Signalling point is to all the other IPSP (or the IPSTP that only has the Signalling Transfer Point function to those) broadcast transmission point of destination status poll (DAUD, Destination State Audit) message is determined oneself collimation connection route to corresponding signalling point according to the response message of receiving.

As shown in Figure 3, IPSP1 sends DAUD message to IPSP2 and IPSP3, the routing state of inquiry IPSP4.

The treatment principle of DAUD message is as follows:

(1) signaling point code of DAUD message recipient is not in the query context (Affected Point Code) of DAUD message.

(2) transmission of DAUD message can be regularly to carry out on signalling point, carry out in the time of also can being the signalling point startup, or after the routing state of finding certain IPSP changes, to all relevant signalling points or Signalling Transfer Point broadcast transmission DAUD message at this IPSP.

(3) IPSTP must be according to the routing state of oneself grasping to DAUD query messages echo reply message, also must make and replying the point coding that all inquiries are enumerated, can reply respectively a plurality of point codings of DAUD inquiry, replying can be that point of destination can reach (Destination Available, DAVA), unreachable (the Destination Unavailable of point of destination, DUNA), signaling congestion (SignalingCongestion, SCON), limited (the Destination Restricted of point of destination, DRST), unreachable (the Destination User Part Unavailable of point of destination User Part, DUPU) or the unknown of point of destination state (Destination Status Unknown, Error).

(4) sender of DAUD upgrades the routing table of oneself according to the response message that receives.

Situation two

Signalling Transfer Point sends DAVA message, the signalling point that broadcasting can communicate by oneself to all the other IPSP and IPSTP.

As shown in Figure 4, if the SPMC on IPSP3 indication IPSP4 signalling point can reach, IPSP3 sends DAVA message about IPSP4 to IPSP1 and IPSP2.

The treatment principle of DAVA message is as follows:

(1) DAVA message is only broadcasted on Signalling Transfer Point, and the recipient of DAVA message comprises the whole adjacent signaling points except that the indicated signalling point of DAVA (Affected Point Code).

(2) recipient of DAVA message is according to the routing table of the DAVA information updating of receiving oneself to relevant signalling point.

Situation three

Signalling Transfer Point sends DUNA message, the signalling point that broadcasting can't communicate by oneself to all the other IPSP and IPSTP.

As shown in Figure 5, if do not arrive the available route of IPSP4 on the IPSP3, at this moment, SPMC will indicate the IPSP4 signalling point unreachable, and also not collimating UNICOM's letter can use, and IPSP3 is to the DUNA message of IPSP1 transmission about IPSP4.

The treatment principle of DUNA message:

(1) DUNA message is only broadcasted on Signalling Transfer Point, and the recipient of DUNA message comprises the whole adjacent signaling points except that the indicated signalling point of DUNA (Affected Point Code).

(2) recipient of DUNA message is according to the routing table of the DUNA information updating of receiving oneself to relevant signalling point.

Situation four

Signalling Transfer Point sends DRST message to all the other IPSP and IPSTP, and broadcasting is by oneself communicating restricted signalling point.

As shown in Figure 6, if transit point IPSP3 has only a collimation connection route to use to signalling point IPSP4, by Signalling Transfer Point IPSP2, IPSP3 should send DRST message by all adjacent signaling points outside IPSP2 and IPSP4 so, and IPSP3 sends DUNA message to IPSP2.

The treatment principle of DRST message is as follows:

(1) DRST message is only broadcasted on Signalling Transfer Point, and the recipient of DRST message comprise except that the indicated signalling point of DRST (Affected Point Code) and collimation connect route the whole adjacent signaling points through Signalling Transfer Point.

(2) recipient of DRST message is according to the routing table of the DRST information updating of receiving oneself to relevant signalling point.

Situation five

Signalling Transfer Point sends SCON message to all the other IPSP and IPSTP, and there is congested signalling point in broadcasting by oneself communicating.

As shown in Figure 7, congested if the SPMC on the IPSP3 is indicated to the IPSP4 signalling point, IPSP3 sends SCON message about IPSP4 to IPSP1 and IPSP2.

The treatment principle of SCON message is as follows:

(1) SCON message is only broadcasted on Signalling Transfer Point, and the recipient of SCON message comprises the whole adjacent signaling points except that the indicated signalling point of SCON (Affected Point Code).

(2) recipient of SCON message is according to the routing table of the SCON information updating of receiving oneself to relevant signalling point.

Situation six

Signalling Transfer Point sends DUPU message to all the other IPSP and IPSTP, and broadcasting is unreachable to certain signalling point User Part by oneself.

As shown in Figure 7, if IPSP3 goes up route information for unreachable to IPSP4 signalling point user, for example, can be that the DPC+SIO routing key does not have available route, but the DPC routing key has available route, and at this moment, IPSP3 sends DUPU message about IPSP4 to IPSP1 and IPSP2.

The treatment principle of DUPU message is as follows:

(1) DUPU message is only broadcasted on Signalling Transfer Point, and the recipient of DUPU message comprises the whole adjacent signaling points except that the indicated signalling point of DUPU (Affected Point Code).

(2) recipient of DUPU message is according to the routing table of the DUPU information updating of receiving oneself to relevant signalling point.

Claims (8)

1. M3UA routing management function expansion method, step is as follows:

(1) uses M3UA;

(2) routing key, application server are set on signalling point or Signalling Transfer Point; Between the described application server direct connection or collimation connection mode; Under associated mode, application server process has signaling to be connected between Original Signaling Point and destination signaling point; Under collimation connection mode, application server process has signaling to be connected between Original Signaling Point and transit point;

(3) application server process is set, perhaps signaling gateway process and IP service processes; And the priority of route and route is set for routing key;

(4) between described signalling point or Signalling Transfer Point, use routing management message routing iinformation; Signalling point or Signalling Transfer Point be according to the routing management message that receives, and in conjunction with the routing table of the state-maintenance oneself of adjacent signaling points route.

2. M3UA routing management function expansion method according to claim 1, it is characterized in that, in the step (4), when the starting stage that signalling point starts, all collimation connection routes are all unavailable, and the availability of direct connection route is managed according to the state of application server and application server process by SPMC; Described SPMC is used for determining the state of adjacent signaling points, finishes the adaptive transmission of signaling message.

3. M3UA routing management function expansion method according to claim 1 is characterized in that, in the step (4), when signalling point broadcast transmission DAUD message, determines oneself collimation connection route to corresponding signalling point according to the response message of receiving.

4. M3UA routing management function expansion method according to claim 1 is characterized in that, in the step (4), and when Signalling Transfer Point sends DAVA message, the signalling point that broadcasting communicates by oneself.

5. M3UA routing management function expansion method according to claim 1 is characterized in that, in the step (4), and when Signalling Transfer Point sends DUNA message, the signalling point that broadcasting can't communicate by oneself.

6. M3UA routing management function expansion method according to claim 1 is characterized in that, in the step (4), when Signalling Transfer Point sent DRST message, broadcasting was by oneself communicating restricted signalling point.

7. M3UA routing management function expansion method according to claim 1 is characterized in that, in the step (4), when Signalling Transfer Point sent SCON message, there was congested signalling point in broadcasting by oneself communicating.

8. M3UA routing management function expansion method according to claim 1 is characterized in that, in the step (4), when Signalling Transfer Point sent DUPU message, broadcasting was unreachable to the User Part of signalling point by oneself.

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