CN101064866A - Method and system for routing address of short message - Google Patents

Abstract

The present invention relates to a kind of route addressing method and system of short message, and the present invention mainly comprises: after the short message gateway node receives the short message of the unregistered identification that SMSC (Short Message Center) sends to IMS domain (IP Multimedia Subsystem), send to the home domain The location registration unit obtains the address of the IP short message gateway IP-SM-GW corresponding to the unregistered identifier, and sends the short message to the IP-SM-GW; after the IP-SM-GW receives the short message, it address the application server AS in the IMS domain where the unregistered identifier is located, and forward the short message to the AS. The realization of the technical scheme of the present invention can effectively solve the problem of routing and addressing from short messages to IMS domain application servers, and realize the process of users interacting with application servers through short messages and the process of intercommunication between CS domain users and short messages with unregistered identifiers in IMS domain.

Description

A short message routing addressing method and system

technical field

The invention relates to the technical field of mobile communication, in particular to a short message routing addressing technology.

Background technique

At present, the application of the short message service in the cellular network of the CS (circuit) domain is extremely successful. The short message service provides a method for transferring messages with a certain size between terminals or between a terminal and a network entity. Moreover, the short message service realizes short message forwarding, storage, delayed sending and other value-added services by introducing a network entity called a short message center. At the same time, GSM/UMTS (Global System for Mobile Telecommunications/Universal Mobile Telecommunications System) PLMN (Public Land Mobile Network) needs to support the forwarding function of short messages between the short message center and the terminal.

IMS (IP Multimedia Subsystem, IP Multimedia Subsystem) was introduced in the 3GPP R5 stage and is a subsystem located above the existing network packet domain. The subsystem adopts the packet domain, and introduces the SIP (Session Initial Protocol, Session Initiation Protocol) protocol as a service control protocol for its upper-layer control signaling and media transmission bearer channels, and utilizes the characteristics of SIP's simplicity, easy expansion, and convenient media combination. Provide rich multimedia services by separating service control from bearer control.

The network convergence solution of IMS enables operators to provide fixed and mobile users with the same services based on a unified core network. For the network architecture where the core network of the fixed network and the mobile network coexist, IMS can not only reduce the complexity of the network structure, but also reduce the operation and maintenance costs of the network.

Because the short message service is successfully applied in the existing cellular system, and the integrated IMS independent of the access network is the future development direction of the network, so 3GPP considers to extend the short message service to the IP connection of the non-cellular network. For this reason, 3GPP has defined a set of network architecture to support this extension, and the network architecture is shown in FIG. 1 . The functions of each network entity in Figure 1 specifically include:

SME: Short Messaging Entity, which can receive or improve short messages, and is located in fixed-line systems, mobile base stations or other service centers;

SMSC: Short Message Service Center (Short Message Service Center), the entity is responsible for relaying, storing or forwarding short messages between the base station and SME; the protocol from ME (Mobile Equipment, mobile station) to SMSC can transmit messages from mobile stations or The short message towards the mobile station, the protocol name is SMTP (Short Message Transmission Protocol, short message transmission protocol);

SMS-IWMSC/SMS-GMSC: An ingress gateway and an egress gateway of the SMSC respectively, this entity receives the short message sent by the SMSC, and the SMS-GMSC queries the HLR (Home Location Register, Home Location Register) for routing information, and sends The SMS is sent to the switching center of the base station where the receiver is located. In the live network, SMS-GMSC and SMS-IWSMSC are generally co-located;

OCS: Online Charging System (Online Charging System). When the entity adopts online charging, the AS sends charging information to OCS through the Rf interface;

CGF/CDF: Charging Gateway Functionality entity. During offline charging, the AS sends charging information to CGF through the Ro reference point; on the Rf and Ro interfaces, the AS uses the ACR message of the DIAMETER protocol to send the charging information. Send fee information to OCS or CGF, and apply ACA message of DIAMETER protocol to receive response from OCS or CGF;

IP-SM-GW: IP short message gateway, this entity is used to provide the intercommunication function of transmitting short messages between UE and GSM/UMTS network, and the AS in the IMS domain can be used as the IP-SM-GW entity;

HSS/HLR: Home Subscriber Server/Home Location Register, which is the location registration unit of the home domain, and this entity is used to provide routing functions for SMS services. When the system terminates the MT (downlink short message, that is, the short message from the SMSC to the called party), the SMS-GMSC sends a routing request message to the HLR/HSS. If the UE (User Equipment, user equipment) has previously registered the IP- For the address of the SM-GW, the address in the E.164 format of the IP-SM-GW needs to be returned to the SMS-GMSC in the routing response message.

Based on the network architecture shown in FIG. 1 , the prior art provides two technical solutions for the routing process in the process of terminating short messages.

First, the registration process of the IMS domain user in the prior art solution 1 is described with reference to FIG. 2, including:

Step 21, the UE initiates a normal registration/re-registration process in the IMS domain;

Step 22, S-CSCF (Serving-CSCF, serving CSCF) checks the trigger rule, finds the address of the IP-SM-GW, and triggers the third-party registration process;

The trigger rule is the IMS trigger rule of user subscription; the third party mentioned here is IP-SM-GW or HSS/HLR.

Step 23. After receiving the registration message from the S-CSCF, the IP-SM-GW stores the address of the S-CSCF;

Step 24, IP-SM-GW initiates a registration process to HSS/HLR, that is, sends a registration MAP-Register message to HSS/HLR;

Step 25, HSS/HLR stores the E.164 address information of IP-SM-GW, and returns a registration response, that is, returns a MAP-Register Rsp message;

Step 26. After receiving the response message, the IP-SM-GW returns a 200 OK response message to the S-CSCF;

Step 27: After receiving the 200 OK response message, the S-CSCF continues to return a 200 OK response message to the UE.

Wherein, the 200OK is the status value of the response, and if the returned status value is 200, it indicates that the status is normal.

The above is the user registration process in the IMS domain. On the premise that the user registration is successful, that is, after the relevant address information of the user is stored in the HSS/HLR, the system can complete the routing process for the user when the short message is terminated.

The flow of sending MT short messages in the prior art solution 1 will be described below with reference to FIG. 3 .

Step 31, the UE registers to the S-CSCF through the IMS registration process, and executes the above SMS registration process;

Step 32, SMSC forwards the SMS message to SMS-GMSC;

After step 33, SMS-GMSC receives described message, send route request message Route Req to HLR/HSS, comprise an indication in this message, described indication is used for marking SMS-GMSC to support IP message routing;

Step 34, after HSS/HLR receives described routing request message, return routing response message Route Rsp to SMS-GMSC, the E.164 address of IP-SM-GW registered when carrying user registration in this message;

Step 35. After receiving the response message, the SMS-GMSC sends a forward short message FORWARD_SMS to the IP-SM-GW, and the short message carries the MSISDN (Mobile Subscriber Number) of the UE;

Step 36. After receiving the short message, the IP-SM-GW converts the MSISDN into a TelUrl, and finds the corresponding S-CSCF address according to the TelUrl;

The TelUrl (telephone uniform resource locator) uses URL syntax to represent a traditional E.164 number, and is used to identify resources that occupy a certain telephone number.

Step 37, IP-SM-GW sends SMS to S-CSCF according to the determined S-CSCF address;

Step 38, the S-CSCF forwards the SIP message SIP MESSAGE to the UE;

Step 39. After receiving the SIP MESSAGE, the UE returns a 200 OK response to the S-CSCF;

Step 310, after receiving the above-mentioned 200 OK response, the S-CSCF sends 200 OK to the IP-SM-GW;

Step 311, UE sends Deliver Report to S-CSCF through SIP MESSAGE;

Step 312, S-CSCF forwards the SIPMESSAGE to IP-SM-GW according to the filtering rules after receiving the above submission report;

The filtering rule is the IMS filtering rule subscribed by the user.

Step 313. After receiving the SIP MESSAGE, the IP-SM-GW sends a submission report to the SMS-GMSC;

Step 314, after receiving the delivery report sent by the IP-SM-GW, the SMS-GMSC sends the delivery report status Deliver Report Status to the HLR/HSS;

Step 315, SMS-GMSC sends the submission report to SMSC;

Step 316, IP-SM-GW sends 200 OK response to S-CSCF;

Step 317: After receiving the response sent by the IP-SM-GW, the S-CSCF sends a 200 OK response to the UE, that is, the MT short message is sent successfully.

It can be seen from the above description that in order to realize the sending of downlink short messages, two registration processes need to be implemented in the registration process: one is the registration process from S-CSCF to IP-SM-GW; the other is the registration process from IP-SM-GW to HSS/HLR registration process. If the user has not registered, the registration process of the above two links will not be executed. If the above two registration processes are not implemented in the network, the system cannot route unregistered users when the system terminates the short message, and at this time, the sending of the downlink short message cannot be realized. For example, the PSI (Public Subscriber Identity) in the IMS domain belongs to unregistered users who do not need to register when using it.

In the prior art, a method for giving PSI AS called address is provided, and the method mainly includes the following specific implementation methods:

1. Direct addressing method:

The I-CSCF (Interrogating-CSCF, querying the CSCF) directly inquires the HSS/HLR to obtain the AS address of the called PSI, and directly routes to the AS where the PSI is located.

2. Indirect addressing method:

From the I-CSCF to the HSS/HLR, first obtain an address of the S-CSCF, and after sending the short message to the S-CSCF, the S-CSCF routes it to the AS where the called PSI is located according to the filtering rules.

3. DNS (Domain Name Server, domain name server) routing method:

The I-CSCF maintains a list of supported domain/network names. After receiving the text message, the I-CSCF checks whether the network name corresponding to the called PSI matches the corresponding content in the list maintained. If it matches, it goes to DNS to query Get the AS address.

In the above-mentioned PSI AS called addressing method, the prior art mainly considers the routing addressing process of the AS where the PSI is located during the user session, and does not consider the short message intercommunication from the CS domain to the IMS domain. The process in which the UE sends a short message to the PSI of the IMS domain.

At the same time, the prior art cannot implement the process of routing the short message from the CS domain to the called party, that is, the UE that has signed an unregistered service in the IMS domain.

Contents of the invention

The present invention mainly provides a short message routing addressing method and system, thereby realizing the function of extending the short messages in the circuit domain and the IMS domain to the public service identifier in the IMS domain.

The present invention provides a short message routing addressing method, comprising:

After A, the short message gateway node receives the short message sent by the short message center SMSC to the unregistered identifier of the IP multimedia subsystem IMS domain, it obtains the address of the IP short message gateway IP-SM-GW corresponding to the unregistered identifier from the home domain location storage unit, and send the short message to the IP-SM-GW;

B. After receiving the short message, the IP-SM-GW addresses the application server AS in the IMS domain where the unregistered identifier is located, and forwards the short message to the AS.

Said unregistered marks include:

The public service identifier or the UE identifier of a user equipment that has subscribed to an unregistered service.

The short message gateway node includes: short message export gateway SMS-GMSC;

The home domain location registration unit includes: a home subscriber server HSS or a home location register HLR.

Described step A specifically comprises:

A1. Preset the corresponding relationship between an unregistered identifier and an IP-SM-GW address on the home domain location registration unit, and the home domain location registration unit returns the preset IP-SM-GW address to the SMS gateway node;

or,

A2. Preset the corresponding relationship between the unregistered identifier and multiple IP-SM-GW addresses on the home domain location registration unit, and dynamically specify an IP-SM-GW for the unregistered identifier by the home domain location registration unit, and Return the IP-SM-GW address to the short message gateway node;

or,

A3. The network node passing through the routing signaling between the SMS gateway and the home domain location registration unit intercepts the request signaling from the SMS-GMSC to the home domain location registration unit for routing, and the network node sends the unregistered identifier to the corresponding The IP-SM-GW address is returned to the SMS gateway node.

When the called party identifies the user equipment UE that has signed an unregistered service, the step A further includes:

If the UE is identified as a UE deregistered after registration in the IMS domain, the short message gateway node obtains the IP-SM-GW address corresponding to the UE from the corresponding home domain location registration unit, and the home domain location registration unit stores the IP-SM-GW address The IP-SM-GW address registered during the registration of the UE identity that has subscribed to the unregistered service is returned to the short message gateway node.

Before performing Step A3 also include:

The corresponding relationship between an unregistered identifier and an IP-SM-GW address is set on the network node.

The addressing described in the step B includes:

B1. The IP-SM-GW first designates an S-CSCF, and then the S-CSCF routes to the AS where the unregistered identifier is located.

Corresponding to the step B1, the step B specifically includes:

IP-SM-GW designates an S-CSCF to handle unregistered identification services, and then forwards the received short message to the S-CSCF; after receiving the short message, the S-CSCF sends The filter rules downloaded by the HSS or resolved by DNS to the AS address, and the short message is forwarded to the AS.

When the called party is identified by a public service, the addressing includes:

B2. IP-SM-GW directly inquires and retrieves the AS address where the public service identifier is located from the home domain location storage unit;

or,

B3. IP-SM-GW specifies an inquiry call service controller I-CSCF, and the I-CSCF goes to the home domain location registration unit to retrieve the AS address where the public service identifier is located;

or,

B4. The IP-SM-GW retrieves the address of the AS where the public service identifier is located by querying the DNS server.

When the addressing mode of step B2 or step B3 is adopted, the step A further includes: setting the address information of the AS where the public service identifier is located on the corresponding network node.

The corresponding network nodes include:

The location storage unit of the home domain or a specially set network node.

Corresponding to the steps B2, B3 and B4, the step B specifically includes:

The IP-SM-GW judges that the called party is a public service identifier according to the received short message called party, and requests the address information of the AS where the public service identifier is located to the home domain location registration unit; The unit returns the AS address information to the IP-SM-GW according to the stored correspondence between the public service identifier and the AS, and the IP-SM-GW forwards the short message to the AS;

or,

IP-SM-GW resolves an I-CSCF in the domain of the AS where the public service identifier is located according to the telephone number mapping working group ENUM or domain name server DNS, and forwards the short message to the I-CSCF; the I-CSCF receives After the short message, go to the home domain location registration unit to retrieve the AS address corresponding to the public service identifier, and then forward the short message to the AS;

or,

IP-SM-GW maintains a list of supported domains or network names, if the relevant content in the list maintained by IP-SM-GW matches the corresponding network domain name of the called public service identifier of the short message received by IP-SM-GW , or the IP-SM-GW is configured to query information directly to the DNS, then the IP-SM-GW queries the DNS for the AS address information corresponding to the public service identifier, and the DNS server returns the public service identifier to the IP-SM-GW. After receiving the AS address, the IP-SM-GW forwards the short message to the AS.

The present invention also provides a short message routing addressing system, including:

The short message receiving module is arranged on the short message gateway node, and is used to receive the short message that the short message center SMSC sends to the unregistered identification of the IP multimedia subsystem IMS domain, and triggers the IP-SM-GW routing information acquisition module;

The IP-SM-GW routing information acquisition module is used to obtain the routing information of the IP-SM-GW from the home location registration unit, and provide it to the short message sending module;

Short message sending module, is arranged on described short message gateway node, is used for sending short message to described IP-SM-GW from described short message gateway node, and triggers AS address addressing module;

The AS address addressing module is initiated by the IP-SM-GW to address the AS where the unregistered identifier of the IMS domain is located;

The short message forwarding module is configured to forward the short message to the corresponding AS according to the addressed AS address. Said unregistered marks include:

The public service identifier or the UE identifier of a user equipment that has subscribed to an unregistered service.

Described IP-SM-GW routing information obtaining module comprises:

The IP-SM-GW routing request sending module is arranged on the short message gateway node, and is used to send the routing request of the IP-SM-GW address corresponding to the unregistered identifier to the home domain location registration unit, and trigger the IP-SM- GW address information acquisition module;

The IP-SM-GW address information obtaining module is arranged on a corresponding network node, and is used to obtain the IP-SM-GW address corresponding to the unregistered identifier;

The IP-SM-GW address information delivery module is set at the SMS gateway node, triggered by the IP-SM-GW address information acquisition module, and used to deliver the acquired IP-SM-GW address information to the SMS sending module.

When the called party is the UE identity that has signed an unregistered service, and the UE identity is a UE that has been deregistered after registration in the IMS domain, the IP-SM-GW address information acquisition module is set in the home domain The location registration unit, and the IP-SM-GW address information obtaining module directly obtains the IP-SM-GW address registered by the UE identity during registration from the home domain location registration unit.

The system also includes:

The IP-SM-GW address information setting module is set on the corresponding network node, and is used to set one or more IP-SM-GW addresses corresponding to the unregistered identifier on the network node.

The corresponding network nodes specifically include:

The home domain location registration unit or the network node through which the routing signaling from the short message gateway to the home domain location registration unit passes.

When the IP-SM-GW address information setting module is set on the network node through which the routing signaling between the short message gateway and the home domain location registration unit passes, the described IP-SM-GW address information acquisition module is set on the network node, And the system also includes:

The IP-SM-GW routing request signaling interception module is arranged on the network node, and is used to intercept the IP-SM-GW routing request signaling sent by the short message gateway node to the home domain location registration unit, and trigger the IP-SM- GW address information acquisition module.

When multiple IP-SM-GW addresses corresponding to unregistered identifiers are set on the IP-SM-GW address information setting module, the IP-SM-GW address information setting module is set in the home domain location registration unit, and The system described at this time also includes:

The IP-SM-GW dynamic specifying module is set in the home domain location registration unit, and is used for dynamically specifying a preset IP-SM-GW for the unregistered identifier.

When the called party is the public service identifier, the system also includes:

The AS address information setting module is used to set the AS address information in the home domain location storage unit or a specially set network node. When the IP-SM-GW directly inquires from the home domain location storage unit or a specially set network node and retrieves the When the AS address where the public service identifier is located, provide the AS address information to the corresponding AS address information delivery module; or when the IP-SM-GW specifies an I-CSCF, the I-CSCF sends the home domain location registration unit or a dedicated When the configured network node retrieves the AS address where the public service identifier is located, it provides the AS address information to the corresponding AS address information obtaining module.

The AS address addressing module specifically includes:

The S-CSCF specifying module is set in the IP-SM-GW, and is used to specify an S-CSCF corresponding to an unregistered identifier, forward the short message from the IP-SM-GW to the S-CSCF, and trigger the AS address resolution module;

The AS address resolution module is set on the S-CSCF, and is used to resolve the AS address where the unregistered identifier is located, and trigger the short message forwarding module set on the S-CSCF to forward the short message from the S-CSCF to The corresponding AS.

When the called party is the public service identification, the AS address addressing module specifically includes:

The AS address information request sending module is set in the IP-SM-GW, and is used to send the routing request of the AS where the public service identifier is located to the designated network node, and trigger the AS address information sending module;

An AS address information sending module, set on the designated network node, for obtaining the AS address information from the AS address information setting module, sending the AS address information to the IP-SM-GW, and Trigger the short message forwarding module set on the IP-SM-GW to forward the short message from the IP-SM-GW to the corresponding AS;

Or, the AS address addressing module specifically includes:

The I-CSCF specifying module is set in the IP-SM-GW, and is used to specify an I-CSCF for the AS where the public service identifier is located, and forward the short message to the I-CSCF;

The AS address information acquisition module is set in the I-CSCF, triggered by the I-CSCF specified module, and is used to acquire the address information of the AS where the public service identifier is located from the AS address information setting module, and trigger setting on the I-CSCF The short message forwarding module forwards the short message from the I-CSCF to the corresponding AS;

Or, the AS address addressing module specifically includes:

IP-SM-GW to DNS query configuration module, set in IP-SM-GW, used to configure domain or network name information supported by IP-SM-GW, or used to configure IP-SM-GW directly to DNS Query and trigger the AS address information return module;

The AS address information query module is set in the DNS and is used to query the address information of the AS where the public service identifier is located from the DNS;

AS address information delivery module, set in the DNS, used to return the AS address information to the IP-SM-GW, and trigger the short message forwarding module set on the IP-SM-GW to send The short message is forwarded from the IP-SM-GW to the corresponding AS.

It can be seen from the technical solution provided by the present invention above that the present invention can effectively solve the routing addressing problem of short messages in the circuit domain to the application server in the IMS domain, and extend the short messages in the circuit domain and the IMS domain to unregistered identifiers in the IMS domain, such as public Service ID or UE that has subscribed to an unregistered service, so the present invention can realize the function of sending a short message from a UE in the circuit domain to an unregistered ID in the IMS domain, thereby realizing the short message intercommunication between the CS domain user and the unregistered ID in the IMS domain.

The present invention can also realize the process that the user interacts with the application server through the short message, such as realizing the operations such as user signing. At the same time, the present invention can provide more abundant applications for CS domain and IMS domain users, such as realizing the function of sending short messages in groups, and enhancing user experience.

Description of drawings

Figure 1 is a schematic diagram of a network architecture in which SMS services defined by 3GPP are extended to IP connections;

Fig. 2 is the flow chart of IMS domain user registration provided by the prior art solution 1;

Fig. 3 is the MT short message sending flow chart that prior art scheme one provides;

Fig. 4 is a schematic structural diagram of a network model 1 required for the specific implementation of the present invention;

Fig. 5 is a specific implementation flowchart corresponding to method 21 provided by the present invention;

Fig. 6 is a schematic structural diagram of the second network model required for the specific implementation of the present invention;

Fig. 7 is a specific implementation flowchart corresponding to method 22 provided by the present invention;

FIG. 8 is a schematic structural diagram of a network model three required for the specific implementation of the present invention;

Fig. 9 is a specific implementation flowchart corresponding to method 23 provided by the present invention;

Fig. 10 is a specific implementation flowchart corresponding to method 24 provided by the present invention;

Fig. 11 is a schematic diagram of a specific implementation of the short message routing addressing system provided by the present invention.

Detailed ways

It can be seen from the relevant introduction in the background technology that the user needs to register in the IMS domain, and record the address of the user's service processing node in the IP-SM-GW, so as to perform routing addressing for the registered user as the called party when terminating the short message. And finally deliver the SMS to the user.

In some special cases, the called party may be an unregistered identifier in the IMS domain, such as a public service identifier or a UE that has subscribed to an unregistered service, where the public service identifier is often provided by the provider, and the The public service identifier does not have (no need) the registration process in the IMS domain, and its service processing node is the application server where the public service identifier is located. , the implementation process of addressing the address of the application server where the unregistered identifier of the IMS domain is located is given, so as to realize the process of intercommunication of short messages between CS domain users and unregistered identifiers of the IMS domain.

The present invention mainly realizes through the following steps:

Step 1. After SMS-GMSC receives the short message sent by SMSC to the unregistered identifier of the IMS domain, it obtains the address of the IP-SM-GW corresponding to the unregistered identifier from the home domain location registration unit, and sends the short message to the IP -SM-GW;

Step 2. After receiving the short message, the IP-SM-GW addresses the AS in the IMS domain where the unregistered identifier is located, and forwards the short message to the AS.

Through the addressing process provided by the present invention, the short message service can be extended from the CS domain and the IMS domain to the unregistered identity of the IMS domain.

The above two main processes for realizing the present invention will be further elaborated below.

The present invention provides three kinds of implementation methods for step 1, which are respectively:

Method 11: Pre-set the corresponding relationship between the unregistered identifier and the IP-SM-GW address on the HSS/HLR, when the SMS-GMSC sends the route to the HSS/HLR corresponding to the IP SMS gateway IP-SM-GW address When the information is requested, the HSS/HLR returns the set IP-SM-GW address to the SMS-GMSC according to the corresponding relationship;

The specific implementation process can be:

Step a1, presetting the E.164 address of the IP-SM-GW corresponding to the unregistered identifier on the HSS/HLR;

Step a2, SMSC send short message (Short Message) to SMS-GMSC;

Step a3, SMS-GMSC sends routing request (Route Req) message to HSS/HLR, to obtain routing information;

Step a4, HSS/HLR sends route response (Route Rsp) message to SMS-GMSC according to the unregistered identification of storage and the corresponding relationship of IP-SM-GW, returns the address of IP-SM-GW;

The address of the IP-SM-GW is carried in the routing response message.

In step a5, the SMS-GMSC forwards the short message to the corresponding IP-SM-GW according to the received address of the IP-SM-GW.

Method 12: Pre-set the corresponding relationship between unregistered identifiers and multiple IP-SM-GW addresses on the HSS/HLR, and dynamically specify an IP-SM-GW by the HSS/HLR; when the SMS-GMSC sends a pair of When the routing request of the AS address of the application server where the unregistered identifier is located, the HSS/HLR will return the specified IP-SM-GW address to the SMS-GMSC;

The specific implementation process can be:

Step b1, pre-configuring the corresponding relationship between the unregistered identifier and multiple IP-SM-GWs on the HSS/HLR, and dynamically specifying an E.164 address of the IP-SM-GW for the unregistered identifier by the HSS/HLR;

Step b2 to step b5 are the same as step a2 to step a5.

Method 13: Set the corresponding relationship between an unregistered identifier and a certain IP-SM-GW address on the network node through which the routing signaling between the SMS gateway and the HSS/HLR passes, such as a certain routing signaling interception point, and intercept it by the network node The SMS-GMSC sends the routing request signaling to the HSS/HLR; and the network node returns the IP-SM-GW address corresponding to the unregistered identifier to the SMS-GMSC.

The specific implementation process can be:

Step c1, pre-configuring the IP-SM-GW address corresponding to the unregistered identifier on the network node through which the routing signaling between the SMS-GMSC and the HSS/HLR passes;

The network node may be a routing signaling interception point between SMS-GMSC and HSS/HLR, or the network node may be specially set up.

Step c2, SMSC sends a short message to SMS-GMSC;

Step c3, SMS-GMSC sends to HSS/HLR to get the route request of unregistered identification;

Step c4, the signaling interception point between SMS-GMSC and HSS/HLR intercepts the above-mentioned routing signaling;

Step c5, the signaling interception point sends the IP-SM-GW address corresponding to the unregistered identifier to the SMS-GMSC.

Returning the IP-SM-GW address by the signaling interception point can eliminate the need to search for the IP-SM-GW address information on the HSS/HLR.

In addition, when the called party is the UE that has subscribed to the unregistered service, if the UE is identified as a UE that has been deregistered after registration in the IMS domain, the short message gateway node will go to the corresponding home domain registration unit to obtain the information corresponding to the UE. The IP-SM-GW address of the UE, the HSS/HLR returns the IP-SM-GW address registered when the UE identity was last registered to the short message gateway node.

The present invention provides the corresponding implementation method for step 2 simultaneously, at first, when the called party is described public service identification, described step 2 can be realized by the following methods, respectively:

Method 21, IP-SM-GW directly routes to AS: IP-SM-GW enhances some functions, that is, enhances the query function, and queries the AS corresponding to the public service identifier from the unit where the AS address information corresponding to the public service identifier is located, such as HSS/HLR address, and after retrieving the AS address, route the SMS to the AS;

Method 22, IP-SM-GW indirect routing to AS through I-CSCF: IP-SM-GW designates an I-CSCF, first routes the SMS to the I-CSCF, and then the I-CSCF corresponds to the public service identifier The unit where the AS address information is located, such as the HSS/HLR retrieves the AS address corresponding to the public service identifier, and then routes the short message to the AS;

Method 23. IP-SM-GW queries the DNS server for the AS address: IP-SM-GW maintains a list of supported domain or network names. If the relevant content in the list maintained by IP-SM-GW is the same as The short message received by the GW matches the network domain name corresponding to the called public service identifier, then the IP-SM-GW queries the DNS and obtains the AS address corresponding to the public service identifier, and then routes the short message to the AS.

When the called party is the unregistered identity of the IMS domain, such as a public service identity or a UE that has subscribed to an unregistered service, step 2 can be implemented by the following methods, including:

Method 24, IP-SM-GW indirectly routes to AS through S-CSCF: IP-SM-GW first obtains an S-CSCF that handles unregistered identification services, then routes the SMS to the S-CSCF, and then the S-CSCF The CSCF routes to the AS where the unregistered identity resides.

It should be added that when the addressing mode adopts the method 21 or the method 22, correspondingly, in the step a1, the step b1 or the step c1 corresponding to the method 11, the method 12 or the method 13, unless required To set the IP-SM-GW address, it is also necessary to set the AS address where the public service identifier is located on the designated network node. The AS address can be set in the home domain location registration unit, or specially set in the network A network node on which the AS address is set. In the following description of specific embodiments of method 21, method 22, method 23, and method 24, setting the AS address on the HSS/HLR is taken as an example.

In addition, in the above method 21 to method 24, the IP-SM-GW does not check the validity of the S-CSCF address associated with the unregistered identifier as it does for ordinary registered users. Because for a registered user, the IP-SM-GW will check the validity of the user's address registered with the S-CSCF, and after the verification is valid, continue the sending process of the short message; and the unregistered identifier has not been registered, Therefore, the IP-SM-GW cannot detect the validity of an S-CSCF address specified for an unregistered identity. If the IP-SM-GW is still required to check the validity of the S-CSCF address of an unregistered identity, the receiving The following routing process cannot be executed, so that the entire process of terminating short messages is invalid.

The present invention aims at the above method 21 to method 24, and correspondingly provides the following embodiments.

In conjunction with accompanying drawing 4 and accompanying drawing 5, the embodiment one corresponding to the described method 21 provided by the present invention is as follows, including steps:

Steps 51 to 55 can be selected to perform steps a1 to a5 corresponding to method 11, or step b1 or step b5 corresponding to method 12, or step c1 or step c5 corresponding to method 13;

Step 56: After receiving the short message, the IP-SM-GW judges that the called party has not registered the corresponding S-CSCF address according to the short message, that is, the called party is not registered; or according to the IP-SM-GW Configured public service identification list, after judging that the called user is a public service identification, IP-SM-GW sends a query request Query Req message to HSS/HLR, and requests routing information again;

The request message function described in step 56 can be implemented by using the original LIR and LIA messages between the I-CSCF and the HSS/HLR, or by expanding the message parameters of the Sh interface.

Step 57. After receiving the query request message, the HSS/HLR sends a query response Query Rsp message to the IP-SM-GW according to the stored public service identifier and the corresponding relationship of the AS, and returns the address of the AS;

The query response message carries the AS address.

Step 58: After receiving the AS address, the IP-SM-GW forwards the short message to the AS;

Step 59: After receiving the short message, the AS returns a 200 OK response to the IP-SM-GW;

Step 510, after that, the AS sends the short message to the S-CSCF registered by each terminal according to the service information of the public service identifier;

Step 511, after receiving the short message, the S-CSCF forwards the short message to one or more corresponding UEs;

Step 512, after receiving the short message, the UE returns a 200 OK response to the S-CSCF;

Step 513: After receiving the response from the UE, the S-CSCF returns 200 OK to the AS.

In the above step 51 to step 513, step 51 to step 55 is the specific implementation of method 11, and step 56 to step 519 is the routing process of using the method 21 to realize the short message in the circuit domain to the application server where the public service identifier in the IMS domain is located . Wherein, steps 510 to 513 are optional steps, and it can be seen from the implementation of the above step 511 that the present invention can realize the function of sending short messages in groups. In addition, the specific content and process of message interaction between network elements in FIG. 4 correspond to the relevant steps in the first embodiment above.

Embodiment 2 corresponding to method 22 provided by the present invention is described in conjunction with accompanying drawing 6 and accompanying drawing 7 as follows:

Step 71 to step 75 can be the same as step 51 to step 55;

Step 76, IP-SM-GW resolves an I-CSCF in the domain where the AS of the public service identifier is located according to ENUM/DNS, and forwards the short message to the I-CSCF;

The ENUM (Telephone Number Mapping working group, Telephone Number Mapping working group) is a standard issued by the IETF, which defines how to convert the telephone number following the E.164 standard into a domain name format and store it in the DNS server. If the public The service identification number complies with the E.164 standard, and this implementation mode can be adopted, and the IP-SM-GW mentioned at this time must include the ENUM function.

Step 77: After receiving the short message, the I-CSCF returns a 200 OK response to the IP-SM-GW.

Step 78. The I-CSCF sends a LIR message to the HSS/HLR to request the called party, that is, the routing information of the public service identifier;

The HSS/HLR described in step 78 may not be the same as the HSS/HLR in step 73, because the two HSS/HLRs may be in different home domains, which does not affect the acquisition of the correct AS address, as long as the In actual operation, it is sufficient to clarify the functions of the above two HSS/HLR.

Step 79. After receiving the LIR message, the HSS/HLR returns a LIA message to the I-CSCF, and the LIA message carries the address of the AS where the public service identifier is located;

Step 710, after receiving the above-mentioned AS address, the I-CSCF forwards the short message to the AS;

Step 711, after receiving the short message, the AS returns a 200 OK response to the I-CSCF.

The above step 76 to step 711 is to use the method 22 to implement the routing process for the short message in the circuit domain to reach the application server where the public service identifier in the IMS domain is located.

In addition, the specific content and process of message interaction between network elements in FIG. 6 correspond to the relevant steps in the second embodiment above.

Embodiment 3 corresponding to method 23 provided by the present invention is described in conjunction with accompanying drawing 8 and accompanying drawing 9 as follows:

Step 91 to step 95 can be the same as step 51 to step 55;

Step 96, IP-SM-GW pre-configures a list of supported domains or network names, or can be configured to directly query DNS;

Step 97: If the relevant content in the list maintained by the IP-SM-GW matches the network domain name corresponding to the public service identifier of the called party in the short message received by the IP-SM-GW, or the IP-SM-GW is configured to directly access the DNS query, the IP-SM-GW sends a DNS query DNS Query message to the DNS server;

Step 98: After receiving the above query message, the DNS server returns the AS address where the PSI is located to the IP-SM-GW;

Step 99. After receiving the above-mentioned AS address, the IP-SM-GW forwards the short message to the AS;

Step 910, after receiving the short message, the AS returns a 200 OK response to the IP-SM-GW.

The above step 96 to step 910 is to use the method 23 to implement the routing process for the short message in the circuit domain to reach the application server where the public service identifier in the IMS domain is located.

In addition, the specific content and process of message interaction between network elements in FIG. 8 correspond to the relevant steps in the third embodiment above.

Embodiment 4 corresponding to method 24 provided by the present invention is described in conjunction with accompanying drawing 8 and accompanying drawing 10 as follows:

Step 101 to step 105 can be the same as step 51 to step 55;

Step 106, the IP-SM-GW specifies an S-CSCF according to the data configuration of the S-CSCF, and forwards the short message to the S-CSCF;

Step 107: After receiving the short message, the S-CSCF returns a 200 OK response to the IP-SM-GW;

Step 108: S-CSCF resolves to the AS address according to filtering rules or DNS, and forwards the short message to the AS;

The filtering rule belongs to the content of the user subscription data in the IMS domain. In the step 108, the S-CSCF downloads the filtering rule information from the home subscriber server HSS, and processes the service of the unregistered identifier according to the filtering rule The node corresponds to the corresponding AS; the DNS resolution is to find the corresponding AS address through the domain name corresponding to the unregistered identifier.

Step 109: After receiving the short message, the AS returns a 200 OK response to the S-CSCF.

The above step 106 to step 109 is the routing process of using the method 24 to realize the short message in the circuit domain to the IMS domain public service identifier or the application server where the UE has signed an unregistered service. In addition, the specific content and process of message interaction between network elements in FIG. 8 correspond to the related steps of the fourth embodiment above.

The present invention also provides a routing addressing system for short messages as shown in Figure 11, which specifically includes modules with the following functions:

(1) SMS receiving module

It is set on the SMS gateway node, such as SMS-IWMSC/SMS-GMSC, and is used to receive the SMS sent by SMSC to the IMS domain with an unregistered identifier, and trigger the routing request sending module.

The unregistered identity includes a public service identity or a user equipment UE identity that has subscribed to an unregistered service.

(2) IP-SM-GW routing information acquisition module

It is used to obtain the routing information of the IP-SM-GW from the home location registration unit, and provide it to the short message sending module.

Described IP-SM-GW routing information acquisition module specifically includes:

The IP-SM-GW routing request sending module is arranged on the short message gateway node, and is used to send the routing request of the IP-SM-GW address corresponding to the unregistered identifier to the home domain location registration unit, and trigger the IP-SM- GW address information acquisition module;

The IP-SM-GW address information acquisition module is set at the corresponding network node, such as HSS/HLR or the signaling interception point through which the routing signaling from the short message gateway to the home domain location registration unit passes, and is used to obtain the information related to the unknown The IP-SM-GW address corresponding to the registration identifier;

When the called party is the UE identity that has signed an unregistered service, and the UE identity is a UE that has been deregistered after registration in the IMS domain, the IP-SM-GW address information acquisition module is set in the home domain The location registration unit, and the IP-SM-GW address information obtaining module directly obtains the IP-SM-GW address registered by the UE identity during registration from the home domain location registration unit.

The IP-SM-GW address information delivery module is set at the SMS gateway node, triggered by the IP-SM-GW address information acquisition module, and used to deliver the acquired IP-SM-GW address information to the SMS sending module.

(3) IP-SM-GW address information setting module

Set at the corresponding network node, such as HSS/HLR or the signaling interception point through which the routing signaling from the SMS gateway to the home domain location registration unit passes, and is used to set a corresponding unregistered identifier on the network node. or multiple IP-SM-GW addresses.

When the IP-SM-GW address information setting module is set at the signaling interception point, the IP-SM-GW address information acquisition module is set at the signaling interception point, and the system also includes:

(4) IP-SM-GW routing request signaling interception module

Set at the signaling interception point, used to intercept the IP-SM-GW routing request signaling sent by the short message gateway node to the home domain location registration unit, and trigger the IP-SM-GW address information acquisition module.

When multiple IP-SM-GW addresses corresponding to the unregistered identification are set on the IP-SM-GW address information setting module, then the IP-SM-GW address information setting module is set on the HSS/HLR, and at this time The system also includes:

(5) An IP-SM-GW dynamic specifying module, set in the HSS/HLR, for dynamically specifying a preset IP-SM-GW for the unregistered identifier.

(6) SMS sending module

It is set at the short message gateway node, and is used for sending short messages from the short message gateway node to the IP-SM-GW, and triggering the AS address addressing module.

(7) AS address addressing module

The addressing is initiated by the IP-SM-GW, and is used to address the AS where the unregistered identity in the IMS domain is located.

When the method 21 or method 22 in the method description above, the system also includes:

(8) AS address information setting module

It is used to set the AS address information on the HSS/HLR or a specially set network node. When the IP-SM-GW directly inquires and retrieves the AS address where the public service identifier is located from the home domain location registration unit or a specially set network node, Provide the AS address information to the corresponding AS address information delivery module; or when IP-SM-GW specifies an I-CSCF, the I-CSCF retrieves the public service identifier from the home domain location registration unit or a specially set network node When the AS address is located, the AS address information is provided to the corresponding AS address information obtaining module.

Usually, the AS address information setting module is selected to be set on the HSS/HLR in specific implementation, and what Fig. 11 embodies is also the situation that the AS address information setting module is set on the HSS/HLR; AS address information, except for adding the specially set network node, other situations are similar to setting AS address information in HSS/HLR.

(9) A short message forwarding module, configured to forward the short message to the corresponding AS according to the addressed AS address.

Wherein, the AS address addressing module specifically includes:

The S-CSCF specifying module is set in the IP-SM-GW, and is used to specify an S-CSCF corresponding to an unregistered identifier, forward the short message from the IP-SM-GW to the S-CSCF, and trigger the AS address resolution module;

The AS address resolution module is set in the S-CSCF, and is used to resolve the AS address where the unregistered identifier is located, and trigger the short message forwarding module to forward the short message from the S-CSCF to the corresponding AS; and, at this time , the short message forwarding module is set on the S-CSCF.

The two modules designated by the S-CSCF and the AS address information parsing module can realize the indirect addressing process of the IP-SM-GW through the S-CSCF, which corresponds to the method 24 above.

When the called party identifies the public service, the AS address addressing module specifically includes:

The AS address information request sending module is set in the IP-SM-GW, and is used to send the routing request of the AS where the public service identifier is located to the HSS/HLR (or a specially set network node), and trigger the AS address information sending module;

AS address information delivery module, set in HSS/HLR (or specially set network node), used to obtain the AS address information from the AS address information setting module, and send the AS address information to the IP-SM- GW, and trigger the short message forwarding module to forward the short message from the IP-SM-GW to the corresponding AS; and, at this time, the short message forwarding module is set on the IP-SM-GW.

Corresponding to method 21 described above, the AS address information request sending module and the AS address information sending module can realize the direct addressing process of the IP-SM-GW.

Or, the AS address addressing module specifically includes:

The I-CSCF specifying module is set in the IP-SM-GW, and is used to specify an I-CSCF for the AS where the public service identifier is located, and forward the short message to the I-CSCF;

The AS address information acquisition module is set in the I-CSCF, triggered by the I-CSCF specified module, used to obtain the address information of the AS where the public service identifier is located from the AS address information setting module, and trigger the short message forwarding module to send the short message Forwarding from the I-CSCF to the corresponding AS; and, at this time, the short message forwarding module is set on the I-CSCF;

Corresponding to method 22 described above, the two modules of the I-CSCF designation module and the AS address information acquisition module can realize the indirect addressing process of the IP-SM-GW through the I-CSCF.

Or, the AS address addressing module specifically includes:

IP-SM-GW to DNS query configuration module, set in IP-SM-GW, used to configure domain or network name information supported by IP-SM-GW, or used to configure IP-SM-GW directly to DNS Query and trigger the AS address information return module;

The AS address information query module is set in the DNS and is used to query the address information of the AS where the public service identifier is located from the DNS;

AS address information delivery module, set in the DNS, used to return the AS address information to the IP-SM-GW, and trigger the short message forwarding module to send the short message from the IP-SM-GW forward to the corresponding AS; at this time, the short message forwarding module is set on the IP-SM-GW.

Corresponding to method 23 described above, the three modules from IP-SM-GW to DNS query configuration module, AS address information query module and AS address information distribution module can realize IP-SM-GW's search through DNS. address process.

The addressing module can realize the addressing process of terminating the short message through the corresponding combination of the above modules.

In summary, the present invention can effectively solve the problem of routing and addressing from short messages to IMS domain application servers, and extend short messages in the circuit domain and IMS domain to public service identifiers in the IMS domain. The function of sending short messages by the public service identifier of the domain, so as to realize the intercommunication of short messages between the CS domain user and the public service identifier of the IMS domain. The present invention can also realize the process that the user interacts with the application server through the short message, such as realizing the operations such as user signing. At the same time, the present invention can provide more abundant applications for CS domain and IMS domain users, such as realizing the function of sending short messages in groups, and enhancing user experience.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (23)

1. A short message routing and addressing method is characterized by comprising the following steps:

A. after receiving a short message of an unregistered identifier sent to an IP multimedia subsystem IMS domain by a short message center SMSC, a short message gateway node acquires an address of an IP short message gateway IP-SM-GW corresponding to the unregistered identifier from a home domain position register unit and sends the short message to the IP-SM-GW;

B. and after receiving the short message, the IP-SM-GW addresses an application server AS of the IMS domain where the unregistered identification is located and forwards the short message to the AS.

2. The method of claim 1, wherein the unregistered identity comprises:

public service identification or User Equipment (UE) identification which signs a service without registration.

3. The method of claim 1, comprising:

the short message gateway node comprises a short message outlet gateway SMS-GMSC;

the home domain position registering unit comprises a Home Subscriber Server (HSS) or a home position register (HLR).

4. The method according to claim 1, wherein the step a specifically comprises:

a1, presetting the corresponding relation between the unregistered mark and an IP-SM-GW address on the home domain position registering unit, and returning the preset IP-SM-GW address to the short message gateway node by the home domain position registering unit;

or,

a2, presetting the corresponding relation between the unregistered mark and a plurality of IP-SM-GW addresses on the home domain position registering unit, dynamically appointing an IP-SM-GW for the unregistered mark by the home domain position registering unit, and returning the IP-SM-GW address to the short message gateway node;

or,

a3, intercepting the request signaling of routing from SMS-GMSC to home domain location register unit at the network node where the routing signaling between SMS gateway and home domain location register unit passes, and returning the IP-SM-GW address corresponding to the unregistered identification to the SMS gateway node by the network node.

5. The method according to claim 2, wherein when the called party identifies the UE that has subscribed to the unregistered service, the step a further comprises:

when the UE identification is the UE which is logged off after the IMS domain registration, the short message gateway node obtains the IP-SM-GW address corresponding to the UE from the corresponding home domain position registering unit, and the home domain position registering unit returns the IP-SM-GW address registered when the UE identification which has signed the unregistered service is registered to the short message gateway node.

6. The method of claim 4, further comprising, prior to performing step A3:

and setting the corresponding relation between the unregistered identification and an IP-SM-GW address on the network node.

7. The method according to claim 1 or 2, wherein said addressing in step B further comprises:

b1, IP-SM-GW appoints an S-CSCF first, then the S-CSCF routes to the AS where the unregistered identification is located.

8. The method according to claim 7, wherein the step B specifically comprises:

the IP-SM-GW appoints an S-CSCF which processes the unregistered identification service, and then forwards the received short message to the S-CSCF; and after receiving the short message, the S-CSCF resolves to an AS address according to a filtering rule or DNS downloaded from a Home Subscriber Server (HSS), and forwards the short message to the AS.

9. A method according to claim 1 or 2, characterized in that in said step B, when the called party is a public service identity, said addressing comprises:

b2, IP-SM-GW directly inquires and retrieves AS address of public service identification to the home domain location register unit;

or,

b3, IP-SM-GW appoints an inquiry call service controller I-CSCF, and the AS address where the public service mark is located is retrieved from the home domain location register unit by the I-CSCF;

or,

b4, IP-SM-GW retrieves the AS address where the public service identification is located by querying the DNS server.

10. The method according to claim 9, wherein when the addressing scheme of step B2 or step B3 is adopted, said step a further comprises:

and setting AS address information of the public service identifier on a corresponding network node.

11. The method of claim 10, wherein the corresponding network node comprises:

a home domain location registering unit or a specially arranged network node.

12. The method according to claim 9, wherein step B specifically comprises:

the IP-SM-GW judges that the called party is a public service identifier according to the received short message called party and requests the address information of the AS where the public service identifier is located from a home domain location register unit; the home domain position registering unit returns the AS address information to the IP-SM-GW according to the stored corresponding relation between the public service identification and the AS, and the IP-SM-GW forwards the short message to the AS;

or,

the IP-SM-GW analyzes an I-CSCF of the domain where the AS where the public service identifier is located according to a telephone number mapping working group ENUM or a domain name server DNS, and forwards the short message to the I-CSCF; after receiving the short message, the I-CSCF retrieves the AS address corresponding to the public service identifier from a home domain location register unit, and then forwards the short message to the AS;

or,

the IP-SM-GW maintains a list of supported domains or network names, if relevant content in the list maintained by the IP-SM-GW is matched with a network domain name corresponding to a public service identifier of a called short message received by the IP-SM-GW, or the IP-SM-GW is configured to directly receive DNS query information, the IP-SM-GW queries AS address information corresponding to the public service identifier from a DNS, and returns an AS address where the public service identifier is located to the IP-SM-GW by a DNS server, and the IP-SM-GW forwards the short message to the AS after receiving the AS address.

13. A short message routing and addressing system is characterized by comprising:

the short message receiving module is arranged at the short message gateway node and used for receiving the short message of the unregistered identifier sent to the IMS domain of the IP multimedia subsystem by the short message center SMSC and triggering the IP-SM-GW routing information acquisition module;

the IP-SM-GW routing information acquisition module is used for acquiring the routing information of the IP-SM-GW from the home location register unit and providing the routing information to the short message sending module;

the short message sending module is arranged at the short message gateway node and used for sending short messages from the short message gateway node to the IP-SM-GW and triggering the AS address addressing module;

the AS address addressing module is initiated by the IP-SM-GW and is used for addressing to the AS where the unregistered identifier of the IMS domain is located;

and the short message forwarding module is used for forwarding the short message to the corresponding AS according to the addressed AS address.

14. The system of claim 13, wherein the unregistered identity comprises:

public service identification or User Equipment (UE) identification which signs a service without registration.

15. The system of claim 13, wherein the IP-SM-GW routing information obtaining module comprises:

the IP-SM-GW routing request sending module is arranged on the short message gateway node and used for sending a routing request of an IP-SM-GW address corresponding to the unregistered identifier to the home domain position registering unit and triggering the IP-SM-GW address information acquiring module;

the IP-SM-GW address information acquisition module is arranged at a corresponding network node and is used for acquiring an IP-SM-GW address corresponding to the unregistered identifier;

and the IP-SM-GW address information issuing module is arranged at the short message gateway node, is triggered by the IP-SM-GW address information acquiring module and is used for issuing the acquired IP-SM-GW address information to the short message sending module.

16. The system of claim 15, comprising:

when the called party is the UE identification which has signed the unregistered service and the UE identification is the UE which is logged off after the IMS domain is registered, the IP-SM-GW address information acquisition module is arranged in the home domain position registering unit, and the IP-SM-GW address information acquisition module directly acquires the IP-SM-GW address registered when the UE identification is registered from the home domain position registering unit.

17. The system of claim 13, further comprising:

and the IP-SM-GW address information setting module is arranged on a corresponding network node and is used for setting one or more IP-SM-GW addresses corresponding to the unregistered identification on the network node.

18. The system according to claim 15 or 17, wherein the corresponding network node specifically comprises:

a home domain location register unit or a network node through which a routing signaling passes from the short message gateway to the home domain location register unit.

19. The system of claim 18, wherein when the IP-SM-GW address information setting module is disposed at a network node through which routing signaling from the short message gateway to the home domain location register unit passes, the IP-SM-GW address information obtaining module is disposed at the network node, and the system further comprises:

and the IP-SM-GW routing request signaling intercepting module is arranged on the network node and is used for intercepting the IP-SM-GW routing request signaling sent by the short message gateway node to the home domain location register unit and triggering the IP-SM-GW address information acquiring module.

20. The system of claim 17, wherein when a plurality of IP-SM-GW addresses corresponding to the unregistered identity are set on an IP-SM-GW address information setting module, the IP-SM-GW address information setting module is set on a home domain location registering unit, and the system further comprises:

and the IP-SM-GW dynamic assignment module is arranged in the home domain position registering unit and is used for dynamically assigning a preset IP-SM-GW for the unregistered identifier.

21. A system according to claim 13 or 14, characterized in that when the called party is said public service identity, said system further comprises:

the AS address information setting module is used for setting AS address information in a home domain position registering unit or a specially-set network node, and providing the AS address information to a corresponding AS address information issuing module when the IP-SM-GW directly inquires and retrieves the AS address of the public service identifier from the home domain position registering unit or the specially-set network node; or when the IP-SM-GW appoints an I-CSCF, and the AS address where the public service identification is located is retrieved from the I-CSCF to a home domain location register unit or a specially-arranged network node, the AS address information is provided for the corresponding AS address information acquisition module.

22. The system of claim 13, wherein the AS address addressing module specifically comprises:

the S-CSCF designation module is arranged on the IP-SM-GW and is used for designating an S-CSCF corresponding to the unregistered identifier, forwarding the short message from the IP-SM-GW to the S-CSCF and triggering the AS address resolution module;

and the AS address analysis module is arranged on the S-CSCF and used for analyzing the AS address where the unregistered identifier is positioned and triggering the short message forwarding module arranged on the S-CSCF to forward the short message from the S-CSCF to the corresponding AS.

23. A system according to claim 13 or 14, characterized in that, when said public service identity is identified to the called party,

the AS address addressing module specifically includes:

the AS address information request sending module is arranged in the IP-SM-GW and used for sending a routing request of an AS where the public service identifier is located to the specified network node and triggering the AS address information issuing module;

the AS address information issuing module is arranged at the appointed network node and used for acquiring the AS address information from the AS address information setting module, issuing the AS address information to the IP-SM-GW and triggering the short message forwarding module arranged on the IP-SM-GW to forward the short message from the IP-SM-GW to the corresponding AS;

or,

the AS address addressing module specifically includes:

the I-CSCF appointing module is arranged on the IP-SM-GW and used for appointing an I-CSCF for the AS where the public service identifier is located and forwarding the short message to the I-CSCF;

the AS address information acquisition module is arranged on the I-CSCF, is triggered by the I-CSCF designation module, and is used for acquiring the address information of the AS where the public service identifier is positioned from the AS address information setting module and triggering the short message forwarding module arranged on the I-CSCF to forward the short message from the I-CSCF to the corresponding AS;

or,

the AS address addressing module specifically includes:

the query configuration module from the IP-SM-GW to the DNS is arranged on the IP-SM-GW and used for configuring domain or network name information supported by the IP-SM-GW or configuring the IP-SM-GW to be directly queried to the DNS and triggering the AS address information return module;

the AS address information query module is arranged on the DNS and used for querying the address information of the AS where the public service identifier is located from the DNS;

and the AS address information issuing module is arranged on the DNS and used for returning the AS address information to the IP-SM-GW and triggering a short message forwarding module arranged on the IP-SM-GW to forward the short message from the IP-SM-GW to the corresponding AS.

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