CN1933485B

CN1933485B - Method and apparatus of compatible SCCP and SUA

Info

Publication number: CN1933485B
Application number: CN2006101099147A
Authority: CN
Inventors: 邵景莅; 汪碧海
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-08-22
Filing date: 2006-08-22
Publication date: 2010-06-23
Anticipated expiration: 2026-08-22
Also published as: CN1933485A

Abstract

A method for making compatible of SCCP and SUA includes setting adaptive layer SIF on signaling connection control unit SCCP and up-layer of user message adaptive layer SUA on signaling connection control unit, utilizing SIF to distribute message for making compatible of SCCP and SUA when message is received by SIF. The device used for realizing said method is also disclosed.

Description

The method of a kind of compatible SCCP and SUA and device

Technical field

The present invention relates to network field, particularly relate to method and the device of a kind of compatible SCCP and SUA.

Background technology

1, SUA protocol technology background.

Along with the application and the popularization of Softswitch technology, the conventional telecommunications net just develops towards the direction with the IP network intercommunication.Wherein, the problem of most critical is that the No.7 signaling that has been used widely can transmission efficiently and reliably in IP network.As far back as 1999, IETF just began to formulate based on the SIGTRAN of IP technology bunch, and it mainly comprises the adapting protocol of No.7 signaling system MTP layer, so that the transmittability of No.7 signaling on IP network to be provided.At present, IETF has further proposed adapting protocol-SUA (Signalling Connection Control Part User Adaptation Layer of SCCP SCCP layer again, signaling connection control part customer message adaptation layer), so that stronger map addresses and routing function to be provided, and simpler management function.

2, SUA protocol architecture.

SUA is supported in transmission No.7 signaling SCCP user message on the IP network, and for example TCAP message, RANAP message etc. realize functions such as TCAP over IP, RANAP over IP.SUA not only supports the transmission of messages between SGW and Internet Protocol signaling point (as IP address database), also supports in the same IP network transmission of messages between two signalling points.

When the SUA that is positioned at SGW receives the message that the SCCP of this gateway sends, at first carry out address translation and map addresses, and be routed to the purpose Internet Protocol signaling point by the SCTP coupling.When SUA receives message from IP network, then carry out address translation and map addresses, message is sent to the SCCP of SGW, and is routed to the No.7 signalling point.

SGW can be used as end points or relay point and Internet Protocol signaling point collaborative work, thereby the also difference to some extent of routing mode of message is set up in SCCP connectionless information or connection.When SGW during as end points, message is by PC (point coding) and SSN (subsystem number) routing.If subsystem is by routing context (Routing Context) and SSN mark, from the angle of No.7 signalling point, then this SCCP user is positioned at this SGW.When SGW during, then need carry out GT (global title) translation and determine the message destination as relay point.SCCP user's physical location and No.7 signaling network are irrelevant.The GT translation can generate one group " SCCP entity set ", and derives an AS (Application Server, application server) thus.According to SCCP called subscriber address, can choose decision to AS.

AS (application server) is a logic entity, is identified by specific routing key (Routing Key).ASP (application server process) is the process instance of AS, by routing context (Routing Context) sign, is used to handle communication with it.Be not mapping relations between AS and ASP, an AS comprises one group of independently ASP, and an ASP also can be a plurality of AS provides service.The all corresponding Internet Protocol signaling point of each ASP is for the SCTP layer provides service.A SGW can be considered as having one group of AS of No.7 signaling network interface.

3, the service that provides of SUA agreement.

(1) transmission of SCCP user message is supported.

SUA supports the seamless transmission of SCCP user message between SGW and ASP (application server process).

(2) the SCCP classification is supported.

SUA can transparent support four class SCCP types: unordered connectionless protocol type 0 provides the connectionless protocol Class1 of sequential control, connection oriented protocol the type 2 and connection oriented protocol type 3 of flow control is provided.

(3) local management function.

SUA can point out the mistake in the SUA protocol message, and can notify local management and remote signaling point as required.

(4) the SCCP network management function is mutual.

SUA enables the ASP administrative messag and handles the ASP state, thereby realizes and the intercommunication of SCCP network management function.N-State, primitive such as N-Pcstate and N-Coord can transmit in the SCCP of SGW and SUA network management function, are used for triggering corresponding event at IP network and No.7 signaling network.

(5) the support SUA that manages between signaling gateway process and ASP provides the intercommunication of SCCP network management function between the SGW that is between Circuit Switching Network and IP network and ASP.This function comprise to ASP provide the No.7 signalling point can and, the indication of unreachable, congested state, and start inquiry to far-end No.7 end points at SGW.

(6) relay function.

For promoting the autgmentability of network, SUA relay function decidable goes out next jumping SCTP coupling of definite object SUA end points.The judgement of next jumping can be based on the GT interpretative function in the similar No.7 signaling network, also can be by the host name of called address, and IP address or point coding provide.SUA can dispose relay function as required, thereby improves autgmentability, reliability and the flexibility of network.

4, the built-in function that provides of SUA agreement.

For addressing and relay function are provided, SUA has adopted the map addresses function of a kind of AMF of being called (Address MappingFunction).AMF has multiple implementation: can adopt the translation of local GT table under distribution pattern, can adopt DNS under layered model, and can adopt the ldap directory agreement under hubbed mode.When receiving entry message, AMF promptly is called.According to routing context or routing key, AMF is the SCTP coupling of corresponding IP network destination address with the address resolution in the SCCP/SUA entry message.

(1) in the map addresses of SGW.

Usually have one or more ASP in the AS and be in state of activation.But under some situation, when in the AS during the equal un-activation of all ASP, signaling gateway process is then inserted buffering area to the message that mails to this AS, and starts timer, up to there being ASP to recover available.If timer expiry does not still have available ASP, buffering area will be cleared, and trigger and return or refuse flow process accordingly.If not with the map addresses of match messages, then usually message is directed to certain or certain organize default ASP, perhaps message is abandoned and is reported to management function.

(2) in the map addresses of ASP.

The map addresses function of ASP can be according to other elements in target point coding or the message, NO.7 signaling network state, signaling gateway process state and routing context, for the message that is directed to the No.7 signaling network is selected specific signaling gateway process.

(3) in the map addresses of relay point.

When adopting GT, host name, SSN+ point coding or SSN+IP address (non-relay point address) routing, need call relay function.Address according to these information translations or parsing generation has several multi-form.

According to the SSN routing: generate the SCTP coupling ID, the SSN that point to the purpose node, and optionally routing context and/or IP address.

According to the GT routing: generate the SCTP coupling ID, the new GT that point to next relay point, and optionally SSN and/or routing context;

According to the host name routing: generate the SCTP coupling ID that points to next relay point, new host name, and optionally SSN and/or routing context.

If route selection information is designated as local SUA user, then this is both as relay point, again as end points.

For avoiding occurring the circulation route, SUA has continued the hop counter function in the No.7 signaling network.Hop counter is set as maximum at initial end points (No.7 signaling network node or IP network node all can), successively decreases with calling of relay function afterwards.When counter reduces to 0, then call and return or refuse flow process accordingly.

(4) SCTP stream mapping.

SUA SGW and AS provide mapping function by the table of comparisons of safeguarding SCTP and SUA user to the SCTP flow transmission.SUA takes 0 unordered class flow transmission SUA management information usually, also can select the sequential flow transmission under the particular case for use.

(5) flow control.

When ASP needed the SCTP coupling in the interim deletion service or carries out test maintaining, local management function can stop the communication in the corresponding SCTP coupling, and the communication in the current SCTP coupling can be transferred in another coupling.

(6) congestion management.

In ASP, the SUA layer is indicated congested to local SCCP user with SCCP primitive, and triggers the upper strata response with this.Transmission is blocked if SGW is found the No.7 signaling message, then sends the SCCP congestion messages to No.7 signaling starting point.

SUA among the ASP also can send local congestion message to opposite end SUA.Receive this message when SGW, define end points and block, can trigger congested handling process according to SCCP.

5, SUA agreement and SCCP are in the intercommunication of SGW.

SUA SGW flexible routing mechanism and signaling control are the keys that No.7 signaling network and IP network are realized intercommunication.Under the effect of SUA, do not need to redesign network, can add or remove network element.As long as IP bandwidth abundance can realize every application of different signaling requirements.

Below enumerated SUA and the SCCP important flow process when the SGW intercommunication.

(1) burst and refitting.

Long when signaling message, when exceeding the PDU capacity, SGW or ASP need carry out burst and refitting.If SGW or ASP can't finish burst and refitting, then initiate error reporting to the opposite end with suitable message.

(2) load balancing support.

A plurality of ASP among the same AS can activate simultaneously, are in the working method of load balancing.When handling TCAP affairs or SCCP connection, the load balancing mechanism of SGW also should guarantee: the ASP unanimity that the subsequent message of same road affairs or connection and initial message (as TC_Query, TC_Begin, CR etc.) are arrived.

If with regard to the unique identification ASP of energy, then need not consider load balancing according to routing key (as DPC or GT).Can't be unique if the ASP in the AS adopts shared state or internal distribution mechanism during identification, SGW just needs the preferred order transmission means to guarantee the ASP self-consistentency of message arrival.And for connection-oriented SCCP communication, only need set up message CR in initial connection and adopt the load balancing mode, its subsequent message can be continued to use the connecting path of having set up.

If above situation does not all satisfy, then need enable a cover general mechanism in SGW and ASP comes holding load to share: it is related with AS to set up ASP earlier, ASP activates in AS then, and to all SGWs that are communicated with No.7 signaling network transmission activation message, the specific fields of each message all comprises the independent marking that is distributed by ASP.SGW is all set up the ASP of a list records to its registration for each routing key; SGW is just set up allocation table for each routing context afterwards, upgrades when having new related foundation and ASP to activate.

(3) routing of SGW and message distribution.

A.TCAP message.

If TCAP message does not comprise purpose or responds TID (transaction ID) mark, as Query, Begin, Unidirectional then adopts the load balancing mode to distribute ASP.If message comprises the TID mark, then by SG to its parsing and choose corresponding ASP.If corresponding A SP does not exist and returns option and activate, then return error reporting.

B.SCCP is towards connection message.

If SCCP does not comprise DRN (purpose Ref. No.) mark towards connection message, set up message as connection, then adopt the load balancing mode to distribute ASP.If message comprises the DRN mark, then by SG to its parsing and choose corresponding ASP.If corresponding A SP does not exist, then abandon this message.

(4) many SGWs SUA relaying.

Each ASP all can send its independent marking to signaling gateway process.For the consideration of System Fault Tolerance and robustness, but a plurality of SGW synthetic operation, for ASP provides optional route.

6, the comparison of SUA agreement and other agreements.

(1) comparison of SUA and SCCP+M3UA.

Though SUA and SCCP+M3UA all are positioned on the SCTP+IP, from the angle of SUA, it gets more information about the framework of bottom SCTP and IP network.

From laterally, SUA has simplified the loaded down with trivial details layoutprocedure of each element of No.7 signaling network, has reduced the management maintenance cost.From longitudinal comparison, SUA has only one deck, and its management function is also simple a lot, only needs to carry out the ASP management of SUA; SCCP+M3UA then needs to take into account the ASP management of SCCP Management and M3UA.

SUA has expanded the addressability of signaling, and it can adopt the IP address, and the mode that does not have among the SCCP such as host name and DNS is carried out routing addressing, for route planning and adjustment provide more efficient, mechanism more flexibly.In addition, SUA in principle and do not require and use the No.7 signaling point code, thereby can save time a large amount of point coding resources.

(2) comparison of SUA and TI-SCCP.

The end of the year 2002, ITU-T by norm-setting Q.2220 one group be called TI-SCCP (TransportIndependent Signalling Connection Control Part, transmit independent SCCP) agreement, Q.711～Q.716 the SCCP that defines in the standard is made modification, it can be run on the multiple transmission network.

The same with SUA, TI-SCCP utilizes the SCTP signaling transport converter (STC) that defines in the standard Q.2150.3, also can directly run on the SCTP.But its addressability is limited, does not support extended addressing modes such as IP address, host name and DNS.

In addition, TI-SCCP needs to introduce the MAP co-operation when transmission length message.It can't look like SUA, and the SCTP that all bursts/refitting work is transferred to lower floor finishes.And the introducing of MAP will cause a series of adaptive problem.

(3) comparison of SUA and No.7 signaling system.

The SUA agreement has been made optimization at the transmission of transaction message.SUA when keeping No.7 signaling repertoire, also makes the network robustness reach the carrier-class level as the carrying person of TCAP.

SUA adopts public packet transmission bearer signaling, only just can promote the bandwidth and the connectedness of network by shirtsleeve operation, and do not need the network of recombinating as No.7 signaling network E1/T1 canalization link.

SUA has simplified the loaded down with trivial details layoutprocedure of No.7 signaling network, has utilized the IP routing mechanism more fully.The Distributed Application mode that it is taked can reconfigure according to demand easily.

SUA also impels equipment manufacturers that vertical in the past integrated value-added service deduction is the service aspect of horizontal distribution.Can integrated conventional art on this aspect (as roaming, number portability database), value-added service (as Short Message Service) and next generation network technology (as SIP, ENUM, LDAP etc.).

7, conclusion.

SUA makes full use of the performance of transmitted in packets signaling, saves operation cost significantly.It can simplify the webmaster process, and walking abreast provides IP-based DNS route, increases the flexibility of SCCP route, reduces the dependence to signaling point code, reduces the restriction to network architecture of link and bandwidth.By above analysis, we are not difficult to find out, in the various 3G network and IP intelligent network of following value-added service, SUA can be widely used.

Be to have defined SCCP earlier on the agreement formulation time, defined the SUA agreement then; SCCP and SUA agreement also need coexist in very long a period of time.But the scheme that does not have compatible SUA and SCCP at present.The user of SCCP and SUA is identical, how to realize the seamless interfacing to the user when coexistence, is the problem that needs solution at present.

Summary of the invention

The invention provides method and the device of a kind of compatible SCCP and SUA, when coexisting, can't realize the problem of the seamless use of upper-layer user in order to solve present SUA and SCCP, and the problem of intercommunication between SCCP and the SUA.

The method of compatible SCCP of the present invention and SUA comprises the following steps:

Upper strata at SCCP SCCP and signaling connection control part customer message adaptation layer SUA provides adaptation layer SIF;

When SIF receives connectionless information that the upper-layer user sends or connection request, from called address and calling address, obtain point of destination information and this point coding of this connectionless information or connection request; Obtain the state of this point of destination in SCCP and SUA respectively according to point of destination information and this point coding; According to the state of described point of destination in SCCP and SUA, and the distribution policy of configuration, the protocol type that is adopted when selecting pass-along message, and corresponding this connectionless information or the connection request of issuing;

When SCCP or SUA receive opposite end or upper-layer user's connection request, from connection ID resource pool or ID section separately, obtain connection ID; SCCP or SUA carry out the processing of connection request with this connection ID; After setting up calling and called and connecting, SIF is according to the mutual connection ID of carrying in the connection message that has, and correspondingly issues this connection message is arranged.

The distribution policy of described configuration is a load sharing, or is active and standby usefulness.

Wherein, described SIF transmits message between SCCP and SUA.

When acceptance domain is received message,, be forwarded to selected territory with this message is corresponding by the SIF of local exchange distribution policy according to point of destination and configuration.

The device of compatible SCCP of the present invention and SUA comprises:

The SCCP unit is used for the message of receiving with the SCCP protocol processes;

The SUA unit is used for handling the message of receiving with signaling connection control part customer message adaptation layer protocol;

The SIF unit, it is positioned at the upper strata of SCCP unit and SUA unit;

The connection ID administrative unit all links to each other with described SCCP unit, described SUA unit and described SIF unit, is used to described SCCP unit and described SUA unit that connection ID is provided, and the corresponding management of carrying out connection ID;

Described SIF comprises in the unit: information is obtained subelement, is used for obtaining point of destination information and this point coding of this message from called address and calling address when the message that the upper-layer user sends is received in described SIF unit; State obtains subelement, is used for obtaining point of destination information and this point coding that subelement obtains according to information and obtains the state of this point of destination in described SCCP unit and described SUA unit respectively; Dispatching Unit, according to the state of described point of destination in described SCCP unit and described SUA unit, and the distribution policy of configuration, the selected protocol type that transmits, and corresponding this message that issues.

Further again, described connection ID administrative unit provides connection ID for SCCP unit and SUA unit at random, and this connection ID of notice SIF unit is assigned to SCCP unit or SUA unit.

Further again, described connection ID administrative unit is to the connection ID segmentation, and each section and SCCP unit and SUA unit is corresponding respectively, and provides connection ID for SCCP unit or SUA unit in the section.

Beneficial effect of the present invention is as follows:

The inventive method provides adaptation layer SIF on the upper strata of SCCP and SUA, judges that according to relevant information should be distributed to which agreement carries out Message Processing by SIF.

For connectionless information, when SIF receives the message that the upper-layer user sends, from called address and calling address, obtain point of destination information and this point coding of this message; Obtain the state of this point of destination in SCCP and SUA respectively according to point of destination information and this point coding; According to the state of described point of destination in SCCP and SUA, and the distribution policy of configuration, the selected protocol type that transmits, and corresponding this message that issues.

For connection message is arranged, when SIF receives the message that the upper-layer user sends,, realize the identification of SIF to the connection ID of carrying in the interactive messages by management to connection ID, and then the selected protocol type that transmits, and corresponding issuing message.

About the intercommunication of SCCP and SUA,,, be forwarded to selected territory with this message is corresponding, thereby realize the intercommunication of SCCP and SUA by the SIF of local exchange distribution policy according to point of destination and configuration when acceptance domain (SCCP or SUA) when receiving message.

In order to support the inventive method, the present invention also provides the device of a kind of compatible SCCP and SUA.

Description of drawings

Fig. 1 is apparatus of the present invention structural representation;

Fig. 2 is the structural representations of apparatus of the present invention when processing connectionless information;

Fig. 3 is the structural representation of apparatus of the present invention when processing has connection message;

Fig. 4 is the inventive method flow chart of steps.

Embodiment

In order to realize the compatible of SUA and SCCP and coexistence, the invention provides the device of a kind of compatible SCCP and SUA, referring to shown in Figure 1, it comprises: SCCP unit, SUA unit, and the SIF unit that links to each other with the SUA unit with the SCCP unit respectively;

Described SCCP unit is used for the message of receiving with the SCCP protocol processes.

Described SUA unit is used for handling the message of receiving with signaling connection control part customer message adaptation layer.

Described SIF unit, the upper strata that it is positioned at SCCP unit and SUA unit is used for to SCCP unit or SUA unit dispatch messages, with compatible SCCP unit and SUA unit.

Referring to shown in Figure 2, if described device processing connectionless information comprises also in the then described SIF unit that the information that links to each other is successively obtained subelement, state obtains subelement and Dispatching Unit.

Described information is obtained subelement, is used for obtaining point of destination information and this point coding of this message from called address and calling address when the message that the upper-layer user sends is received in the SIF unit;

Described state obtains subelement, is used for obtaining point of destination information and this point coding that subelement obtains according to information and obtains the state of this point of destination in SCCP unit and SUA unit respectively;

Described Dispatching Unit, according to the state of described point of destination in SCCP unit and SUA unit, and the distribution policy of configuration, the selected protocol type that transmits, and corresponding this message that issues.Described distribution policy is a load sharing, or is active and standby usefulness.

Referring to shown in Figure 3, if described device is handled connection message is arranged, also comprise the connection ID administrative unit that all links to each other with SCCP unit, SUA unit and SIF unit in the then described device.

Described connection ID administrative unit is used to SCCP unit and SUA unit that connection ID is provided, and the corresponding management of carrying out connection ID.Described connection ID administrative unit can be at random for SCCP unit and SUA unit provide connection ID, and this connection ID of notice SIF unit is assigned to SCCP unit or SUA unit, so that the corresponding issuing message in SIF unit.Perhaps, described connection ID administrative unit is to the connection ID segmentation, and it is each section is corresponding respectively with SCCP unit and SUA unit, and provide connection ID for SCCP unit or SUA unit in the section, (for example: highest order is 1, then represents the cell processing by SCCP so that the SIF unit is according to every section the corresponding issuing message of feature; Highest order is 0, then represents the cell processing by SUA).

Use said apparatus, the present invention also provides the method for a kind of compatible SCCP and SUA, referring to shown in Figure 4, comprises following key step:

S1, provide adaptation layer SIF on the upper strata of SCCP and SUA.

After agreement regulation introducing SUA agreement, when having two agreements of SCCP and SUA at the same time, keep upper-layer user's interface constant.Do not need for the upper-layer user to know that message is to pass to the opposite end by SCCP, still pass to the opposite end by SUA.Therefore the present invention provides adaptation layer SIF (SUA and SCCP interface layer) on the upper strata of SCCP and SUA, and its function is to realize upper-layer user's the distribution of message between SCCP and SUA.

S2, SIF receive message.

Described message can be sent (promptly desiring to be distributed to SUA or SCCP) by the upper-layer user from sending direction, perhaps sends (being that the message that send the opposite end desires to be routed to the upper-layer user) by SUA or SCCP.

Described message can be connectionless information from type of message, or connection message is arranged.

S3, SIF carry out the distribution of message.

SIF carries out the distribution of message according to relevant information, to realize the compatibility of SCCP and SUA.

S4, SCCP or SUA handle after receiving the message that SIF issues.

Below specifically describe the inventive method by four examples.

Method example one: the distribution of the connectionless information that the upper-layer user sends.Comprise following concrete steps:

-when SIF receives the message that the upper-layer user sends, from called address and calling address, obtain point of destination information (DPC or DPCSSN) and this point coding (OPC or OPCSSN) of message.

-obtain the state of this point of destination in SCCP and SUA according to point of destination and this dot information.

-according to the state of described point of destination in SCCP and SUA, and the distribution policy (load sharing, active and standby usefulness) of configuration, the selected protocol type that transmits, and corresponding this message that issues.If load sharing, need be according to the call correlation realization SCCP on upper strata and the traffic load sharing of SUA, the calling number that keeps SCCP and SUA to transmit equates; If active and standby usefulness according to the main agreement with the main usefulness of sign selection that is provided with, is transmitted all messages related to calls.

Method example two: realize having the distribution of connection message by the connection ID resource pool.

When message is when connection message is arranged, according to connecting with reference to realizing the mutual of network side and upper-layer user N primitive.Be defined as follows table for the N primitive parameter that connection is arranged in the agreement:

Table?1/Q.711-Network?service?primitives?for?connection-oriented?servicesb)

Can use the Connection identification conduct keyword of interlayer communication up and down in realization, after the upper-layer user receives the N source language notification message of SCCP, can find oneself link control module fast according to Connection identification, carry out corresponding Message Processing; When the upper-layer user issues request source when speaking to SCCP, SCCP carries out corresponding Message Processing according to the link control module that the Connection identification in the language of source can obtain SCCP fast.The N source language of SUA is handled with SCCP identical.But when bottom exists SCCP and SUA simultaneously, this moment the upper-layer user that can obtain is exactly Connection identification, and do not know that this Connection identification is SCCP's or SUA.Therefore can see having having in the language of connection source of part not have called address or calling address, but need SIF when dispatch messages, can locate the processing protocol of this message fast according to Connection identification by last table.Problem with regard to there being one how to manage Connection identification during realization.

This example realizes having the distribution of connection message by the connection ID resource pool.Can be divided into two kinds of situations according to sending direction.

Situation one: receive connection request from the opposite end.Comprise following concrete steps:

-when SCCP or SUA receive the connection request of opposite end, from the connection ID resource pool, obtain connection ID (can obtain) by the mode of function call or the mode of message informing.

-connection ID resource pool takes out the connection ID of a free time at random from the connection ID of own free time, pass to SCCP or SUA.

-SCCP or SUA use this connection ID to carry out message subsequent treatment (according to existing protocol).

-after setting up the calling and called connection, SIF checks that according to the connection ID of carrying in the interactive messages which agreement this ID belongs to use, if judgement is used by SCCP, then directly sends to this message SCCP and handles; If judge and used, then directly this message is sent to SUA and handle by SUA.

Situation two: the connection request that receives the upper-layer user.Comprise following concrete steps:

When-upper-layer user sent connection request to the SIF layer, the SIF layer at first selected this time to connect by which protocol processes according to the connectionless information processing method.

When-SCCP or SUA receive this user's connection request, from the connection ID resource pool, obtain connection ID (can obtain) by the mode of function call or the mode of message informing.

-SCCP or SUA use this connection ID to carry out message subsequent treatment (doing according to agreement).

Method example three: by the connection ID segmentation being realized having the distribution of connection message.

Table?1/Q.711-Network?service?primitives?for?connection-oriented?servicesb)

This example is by realizing having the distribution of connection message to the connection ID segmentation.Can be divided into two kinds of situations according to sending direction.

-when SCCP or SUA receive the connection request of opposite end, the corresponding connection ID (can by the mode of function call or the mode of message informing) of from ID section separately, obtaining.

Take out the connection ID of a free time in-the idle connection ID from the ID section of correspondence, correspondence passes to SCCP or SUA.

-after setting up the calling and called connection, SIF judges according to the section feature of the connection ID of carrying in the interactive messages this message should by which protocol processes (for example: highest order be 1, then judges and should be handled by SCCP; Highest order is 0, then judges and should be handled by SUA).If judge and to handle by SCCP, then directly this message is sent to SCCP; If judge and to handle by SUA, then directly this message is sent to SUA.

When-SCCP or SUA receive this user's connection request, the corresponding connection ID (can pass through the mode of function call or the mode of message informing) of from ID section separately, obtaining.

Method example four: the distribution of message between domains.

Usually can have a kind of use scene in the network: after the message of SUA side is handled through SUA, find that its next processing node should be in narrowband side, promptly next processing node is SCCP; Need to realize message is delivered to from a territory function in another one territory, that is: realize signaling gateway function (SG function).

When SCCP receives message, after this message is at first passed through the GT translation of SCCP, when the point of destination of inspection message is not local exchange, then give SIF with this forwards, SIF determines this message should pass through which territory (SCCP or SUA) and is delivered to the opposite end according to the point of destination of this message and the distribution policy of configuration (load sharing between agreement, active and standby use etc.).

Receive the handling process of message from SUA identical with the handling process that receives message from SCCP.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. the method for compatible SCCP and SUA is characterized in that, comprises the following steps:

2. the method for claim 1 is characterized in that, when acceptance domain is received message, by the SIF of the local exchange distribution policy according to point of destination and configuration, is forwarded to selected territory with this message is corresponding, to realize the forwarding of message between SCCP and SUA.

3. the device of compatible SCCP and SUA comprises:

It is characterized in that described device also comprises: the SIF unit, it is positioned at the upper strata of described SCCP unit and described SUA unit;

Described SIF comprises in the unit:

Information is obtained subelement, is used for obtaining point of destination information and this point coding of this message from called address and calling address when the message that the upper-layer user sends is received in described SIF unit;

State obtains subelement, is used for obtaining point of destination information and this point coding that subelement obtains according to described information and obtains the state of this point of destination in described SCCP unit and described SUA unit respectively;

Dispatching Unit, according to the state of described point of destination in described SCCP unit and described SUA unit, and the distribution policy of configuration, the protocol type that is adopted when selecting pass-along message, and corresponding this message that issues.

4. device as claimed in claim 3 is characterized in that, described connection ID administrative unit provides connection ID for SCCP unit and SUA unit at random, and this connection ID of notice SIF unit is assigned to SCCP unit or SUA unit.

5. device as claimed in claim 3 is characterized in that, described connection ID administrative unit is to the connection ID segmentation, and each section and SCCP unit and SUA unit is corresponding respectively, and provides connection ID for SCCP unit or SUA unit in the section.