CN101009871A - A gateway and method for SMS intercommunication between the CDMA and GSM - Google Patents

Abstract

The disclosed method to interact SMS between CDMA and GSM comprises: a. the first network user sends SMS to a user in a second network; b. the first network SMS center converses the stop-calling message signaling of SMS into the route request message recognized by the second network to send to the attribution position register in the second network for route; c. recognizing the returned route response message from said register, and sending the stop-calling message to the second network when the response is success; and d. auto-recognizing the stop-calling message to converse into the response message for the first network to let the latter print dialogue menu. This invention reduces hardware cost greatly, and improves the communication stability and charge accuracy.

Description

A Gateway and Method for Realizing Intercommunication of CDMA and GSM Short Messages

technical field

The invention relates to the technical field of wireless communication, in particular to a gateway and a method for realizing intercommunication of CDMA and GSM short messages.

Background technique

At present, the short message service volume is increasing day by day, and the short message service volume between the CDMA network and the GSM network has also increased to a large extent. Each operator pays more and more attention to the short message service between the CDMA network and the GSM network, and hopes to use The lowest cost ensures that the short message service between the CDMA network and the GSM network is safer and more stable, and the billing is also more accurate.

There are two methods for realizing CDMA and GSM short message intercommunication in the existing technology:

The first kind: as patent CN200610046411 discloses a kind of method that realizes CDMA and GSM short message intercommunication, utilizes SMPP agreement, by the SMGW (short message gateway) of CDMA network forwards short message to the short message center of corresponding GSM network according to routing principle SMGW, and the SMGW of the corresponding GSM network short message center performs the remaining routing and message delivery, so as to realize intercommunication of short messages in different places or different networks.

However, the disadvantages of this approach are:

1. The way to realize short message intercommunication through the SMPP protocol is relatively limited. Both CDMA and GSM SMS centers must support the SMPP protocol, and there are many versions of the SMPP protocol standard, and there may be incompatibility in the connection. It needs to be coordinated with each other. In practice, it is not very flexible.

2. The security and stability of messages are relatively poor. The SMPP protocol is for the intercommunication of CDMA and GSM short messages in the public network. The probability of message loss is relatively high. And there are security risks.

3. The billing for user messages is inaccurate, because the intercommunication of CDMA and GSM short messages realized by using the SMPP protocol, for messages sent from the CDMA network to the GSM network, or from the GSM network to the CDMA network, the short message that initiates the call The message center cannot accurately know whether the message is correctly received by the target user. It will directly lead to the problem of inaccurate billing for CDMA and GSM short message intercommunication.

The second method: using relay equipment in the existing network to respectively receive the short messages sent by the short message center of the CDMA network and the short message of the GSM network to convert the signaling, and forward them to the destination GSM short message center or CDMA short message center respectively. And complete the retry, storage and billing of the short message. Thus realizing the intercommunication of short messages between the CDMA network and the GSM network.

The disadvantages of this approach are:

a. The required cost is relatively high, and a set of message forwarding equipment needs to be installed separately. Used to connect CDMA network and GSM network.

b. For the CDMA short message center and the GSM short message center, the billing is more complicated. It is necessary to fetch the corresponding bills from the transfer equipment and check them to complete the billing. This billing process is complex and error-prone.

c. Since the intercommunication of short messages needs to be completed through the relay equipment and passes through the intermediate environment, the stability and security of the entire system will not be very high.

Contents of the invention

The technical problem to be solved by the present invention is to provide a gateway and method for realizing the intercommunication of CDMA and GSM short messages, which can ensure the intercommunication of short message services between the CDMA network and the GSM network with the lowest cost, which is more secure, stable and billable. Also more accurate.

In order to solve the above technical problems, the object of the present invention is achieved through the following technical solutions.

A method for realizing CDMA and GSM short message intercommunication, comprising steps:

a: The first network user sends a short message to the second network destination user;

b: the short message center of the first network converts the short message termination message signaling into a routing request message recognizable by the second network, and forwards the routing request message to the home location register of the second network to request routing;

c: identifying the routing response message returned by the home location register of the second network, and sending the final call message of the second network to the destination address for the successful message;

d: Automatically identify the end-call response message sent by the second network, and convert it into the corresponding end-call response message of the first network, and the short message center of the first network issues a bill.

Wherein, for the shutdown of the second network destination user, the sending of the short message fails, and when the destination user starts up again, step c also includes the steps:

c1: the second network home location register sends the user start-up registration message to the short message center of the CDMA network;

c2: The short message center of the CDMA network converts the message signaling into a power-on notification message of the first network.

Wherein, the first network is a CDMA network, and the second network is a GSM network.

Wherein, the first network is a GSM network, and the second network is a CDMA network.

Wherein, after step c2, it also includes sending the start-up notification message of the GSM network to the short message center of the GSM network.

A gateway for realizing short message intercommunication between CDMA and GSM, comprising a mobile switching center G-MSC of a GSM network, a home location register G-HLR of a GSM network, a short message center G-SMSC of a GSM network, and a home location register C- HLR, mobile switching center C-MSC of CDMA network, CDMA network service processor SC, CDMA network service processor CG user configuration management station SCCF, CDMA signaling processing front-end processor C-MAP, GSM signaling processor front-end processor G-MAP;

The CDMA network service processor SC is used to process CDMA short message service data and generate bills;

The CDMA network service processor CG user configuration management station SCCF is used to store the number segment information of the CDMA network user and the GSM network user, and regularly synchronizes the data to the service processor SC;

The CDMA signaling processing front-end C-MAP is used to process the CDMA short message center service processor SC, the home location register C-HLR of the CDMA network, and the message sent by the mobile switching center C-MSC of the CDMA network, or send a message to These adjacent network elements;

The front-end G-MAP of the GSM signaling processor is used to process the messages sent by the GSM network, convert these signaling messages into signaling messages recognizable by the CDMA network, and send them to the C-MAP; and receive messages from the C-MAP Signaling messages, converting these signalings into signaling messages that can be recognized by the GSM network, and sending them to network elements of the designated GSM network.

Wherein, the C-MAP of the CDMA signaling processing front-end is also used to forward the terminal call message to the GSM network, the GSM network user power-on notification response message, and the CDMA network user power-on notification message to the G-MAP; and receive The terminal call response message from the G-MAP to the GSM network, the GSM network user power-on notification message, and the CDMA network user power-on notification response message.

Wherein, the G-MAP is also used to receive the routing request message and the terminal call message sent by the GSM network short message center G-SMSC, and return to the GSM network short message center G-SMSC routing request response message, the terminal call response message .

Wherein, the G-MAP is also used to convert the CDMA network user power-on notification signaling message forwarded by the C-MAP into a GSM network user power-on notification message, and forward it to the G-SMSC.

Wherein, the CDMA signaling processing front-end C-MAP and the GSM signaling processing front-end G-MAP exist as separate signaling processing modules or belong to the same signaling processing module.

The present invention has following beneficial effect:

The present invention utilizes the existing CDMA network short message center to realize the intercommunication of CDMA and GSM short messages. On the one hand, the hardware cost can be greatly reduced, and at the same time, the intercommunication between CDMA and GSM short messages can be safer and more stable, and the billing is more accurate. easy.

Description of drawings

Fig. 1 is a system structure diagram of the present invention;

Fig. 2 is in the inventive method, and CDMA network sends to the flowchart of GSM network user short message processing;

Fig. 3 is in the inventive method, the flowchart that GSM network sends to CDMA network user short message processing;

Fig. 4 is in the method of the present invention, the GSM user powers on and initiates a notification message flow chart;

Fig. 5 is a flow chart of a notification message initiated by a CDMA user when powering on in the method of the present invention.

Detailed ways

The core idea of the inventive method is as follows:

1. Provide signaling conversion for terminal calls to GSM network short messages

For the CDMA network short message center, it can automatically identify whether a short message originating from a CDMA network is a CDMA network user or a GSM network user. A routing request message that can be recognized by the GSM network. And forward the message to the home location register G-HLR of the GSM network to request routing.

2. Identify the routing response message of the GSM network, and initiate a final call message to the GSM network

After sending the route request message to the home location register G-HLR of the GSM network, the route response message returned by the G-HLR (home location register of the GSM network) is received, and the content of the message can be identified. And process the success message, send the end call message of the GSM network to the destination address; process the failure message, and return the failure message to the CDMA network user.

3. Provide signaling conversion for the terminal call response message of the GSM network

It can automatically identify the end call response message sent by the GSM network and perform signaling conversion. For the successfully sent GSM response message, it is converted into a CDMA successful end-call response message, and the CDMA network short message center issues a successful bill; for the failed GSM response message, it is converted into a CDMA failure end-call response message, and a failure message is issued one.

4. Provide signaling conversion for the user start-up registration message sent by G-HLR

After the destination GSM network user shuts down and fails to send the short message, after the GSM network user turns on again and updates the location information of the GSM network G-HLR, the G-HLR will send the user power-on registration message to the CDMA network short message center, and the CDMA short message The message center performs signaling conversion on the message, and converts it into a power-on notification message of the CDMA network. Thereby, the sending of the short message is continued.

5. Provide signaling conversion for GSM network short message terminal call message

When a GSM network user sends a short message to a CDMA network user, it can automatically identify and collect effective information, such as call origination and end call user, for the short message end call message from the GSM network, and convert it into a short message on the CDMA network Final call message, send the message, and complete the final call.

6. Provide signaling conversion for CDMA network short message terminal call response signaling

For the short message terminal call response signaling of the CDMA network, it can automatically identify and convert the signaling. For the CDMA response message sent successfully, it is converted into the successful end-call response message of GSM, and the GSM network short message center issues a successful bill; one.

7. Perform signaling conversion on CDMA network user start-up registration message

When a GSM network user sends a short message to a CDMA network user, the destination CDMA network user is turned off, and after the short message fails to be sent, the CDMA network user turns on again, and the location of the C-HLR (home location register of the CDMA network) is updated After sending the message, C-IHLR will send the user start-up registration message to the CDMA network short message center, and the CDMA short message center will perform signaling conversion on the message, convert it into a GSM network start-up notification message, and send it to the G network short message center. Thus, the short message center of the G network continues to issue short messages.

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in Figure 1, the system structure diagram of the present invention includes: CDMA network service processor SC, CDMA network service processor CG user configuration management station SCCF, CDMA signaling processing front-end C-MAP, GSM signaling processing front-end Machine G-MAP;

Among them, the CDMA network service processor SC: refers to the CDMA network short message center service processor module, which is mainly responsible for the processing of CDMA short message service data and the generation of bills. In the present invention, it is also necessary to distinguish the source and destination user numbers of the processed short message, and to identify whether the user is a CDMA network user or a GSM network user.

CDMA network service processor CG user configuration management station SCCF is mainly to store the information of CDMA network users and GSM network users, and synchronize the data to the service processor SC at regular intervals.

CDMA signaling processing front-end C-MAP belongs to a CDMA short message center signaling processing unit, mainly used to process CDMA short message center service processor SC, home location register C-HLR of CDMA network, mobile switching center of CDMA network Messages from the C-MSC, or messages sent to these adjacent network elements. In the present invention, there is also a network element responsible for forwarding the signaling message to be sent to the GSM network to the G-MAP, or receiving the signaling message from the G-MAP, and forwarding these messages to the designated CDMA network.

The front-end G-MAP of the GSM signaling processing unit also belongs to a CDMA short message center signaling processing unit, mainly processing the home location register G-HLR of the GSM network, and the messages from the mobile switching center G-MSC of the GSM network. These signaling messages are converted into signaling messages that can be recognized by the CDMA network and sent to the C-MAP. It also receives signaling messages from the C-MAP, converts these signaling messages into signaling messages recognizable by the GSM network, and sends them to network elements of the designated GSM network. Simultaneously because CDMA network user is considered as this network user in GSM network, its belonging HLR (home location register) is G-MAP, and G-MAP is also visited MSC (Mobile Switching Center) as CDMA network user in GSM network, so G - The MAP also needs to receive the routing request message and the terminal call message from the GSM network short message center G-SMSC at the same time, and return the routing request response message and the final call response message to the GSM network short message center G-SMSC.

Among them, the C-MAP of the CDMA signaling processing front-end and the G-MAP of the GSM signaling processing front-end can exist as separate signaling processing modules, and can also run together on one signaling processing module as mutually independent A signaling processing unit exists.

Among them, in Figure 1, the connection relationship between each unit is as follows:

A: The CDMA network service processor CG user configuration management station SCCF regularly synchronizes data to the CDMA network service processor SC;

B: The CDMA network service processor SC receives the CDMA short message origination request message, end-call response message, and user power-on notification message from C-MAP, and sends the CDMA short message end-call message request message, origination call response message, and user power-on The notification response message is sent to C-MAP;

C: C-MAP forwards the terminal call message to the GSM network, the GSM network user power-on notification response message, and the CDMA network user power-on notification message to G-MAP; and receives the terminal call from the G-MAP to the GSM network Call response message, GSM network user power-on notification message, CDMA network user power-on notification response message;

D: Since the CDMA network user is considered as the local network user in the GSM network, its home HLR (Home Location Register) is G-MAP, and the G-MAP is also used as the visiting MSC (Mobile Switching Center) of the CDMA network user in the GSM network, so The G-MAP also needs to receive the routing request message and the terminal call message from the GSM network short message center G-SMSC at the same time, and return the routing request response message and the final call response message to the GSM network short message center G-SMSC. At the same time, the CDMA network user power-on notification signaling message forwarded by the C-MAP is converted into a GSM network user power-on notification message, and forwarded to the G-SMSC.

E: G-MAP sends the routing request message and the user power-on notification response message to the home location register G-HLR of the GSM network, and receives the routing request response message and the user power-on notification message of the G-HLR;

F: G-MAP sends the GSM end call message to the mobile switching center G-MSC of the GSM network, and receives the end call request response message of the G-MSC;

G: C-MAP sends the routing request message and the user power-on notification response message to the home location register C-HLR of the CDMA network, and receives the routing request response message and the user power-on notification message from the C-HLR;

H: The C-MAP sends a CSM call termination message to the mobile switching center C-MSC of the CDMA network, and receives the C-MSC's call termination request response message.

Do further detailed description below in conjunction with specific embodiment, please refer to the flow chart that CDMA network sends to GSM network user short message processing in the inventive method shown in Fig. 2, comprises steps:

201: C-MSC sends a CDMA network user call request message (SMDPP request) to C-MAP, and the message content includes information such as the number of the source user, the number of the destination user, and the message content;

202: C-MAP converts the incoming call request message from the C-MSC into the internal call request message (MoReq) of the CDMA network short message center, and sends it to the short message center service processor SC, including message content and source user information , target user information, etc.;

203: The short message center service processor SC processes the received call request message, authenticates the source user and the destination user, and judges the legitimacy of the user. For legal, and pass the message service processor SC to return successful response message (MoAck) to C-MAP, and send out the bill of calling successfully; Return a failure response message to the C-MAP, which includes information (MoAck) such as the reason for the failure, and issue a failure call list.

204: C-MAP forwards the message to C-MSC after receiving the call initiation response message sent by the service processor SC of the short message center (smdpp response).

205: After the short message center service processor SC judges that the calling message is successful, it distinguishes the destination user. After judging that the destination user is a GSM network user, the SC initiates a local office call termination message (MtToMscReq) to the C-MAP, and the message body contains Indicating that the called party is a G network user;

206: C-MAP receives the terminal call message of the short message center service processor SC, and finds that the called party is a G network user, then forwards the terminal call message (MtToMscReq) message to the G-MAP;

207: After the G-MAP receives the final call message, it calls the GC conversion function (SmdppDeliverReqToMtFwdReq) to convert the CDMA short message into a GSM short message, and then sends a routing request message (SRI request) to the G-HLR, and the message body includes the destination address, etc. information;

The main function of the GC conversion function (SmdppDeliverReqToMtFwdReq) is to identify and collect useful information in the final call message of the CDMA network, including message content, source user, destination user, message destination address, etc., and then use these information to construct the short message of the GSM network Message routing request message.

208: G-HLR returns a routing response message (sri response), the success response message includes information such as the address of the destination G-MSC, and the failure response message includes information such as failure reasons;

209: G-MAP receives the routing success message from G-HLR, and sends a call termination request message (MTFDW request) to the destination G-MSC according to the G-MSC address information in the message body. The message body includes the source user, destination User, message content and other information;

210: G-MSC returns a terminal call response message (mtfdw response) to G-MAP, the message body includes information such as source user and destination user, and if it fails, the message body includes information such as failure reason;

211: G-MAP receives the G-MSC terminal call response message, calls the GC conversion function (MtFwdRspToSmdppRsp) to convert the GSM terminal call response message into a CDMA terminal call response message, and then returns the terminal call response message (MtToMscAck) to C-MAP, The message body includes information such as the source user and the destination user, and if it fails, the message body includes information such as the reason for the failure;

The main function of the GC conversion function (MtFwdRspToSmdppRsp) is to identify and collect useful information in the terminal call response message of the GSM network, including the source user, destination user, message destination address, etc. For the failure message, it also includes information such as the cause of the failure, and then use These information construct the short message terminal call response message of the CDMA network.

212: C-MAP returns a terminal call response message (MtToMscAck) to the short message center service processor SC. The message body includes information such as source user and destination user. Reason and other information, and a call list for the failure call;

213: After receiving the G-MSC terminal call response message, if the G-MAP fails to respond, it needs to send a delivery result message (RDS request) to the G-HLR to which the called GSM network user belongs, and the message body includes the source user Address, destination address and other information;

214: After G-HLR receives the G-MAP delivery result message, G-HLR will record the failure caused by the GSM network terminal user being unreachable. After receiving the message that the destination terminal user is reachable or the location is changed, G-MAP will be notified to retry the message.

Please refer to the flow chart that GSM network sends to the CDMA network user short message processing in the inventive method shown in Fig. 3, comprises steps:

301: A call request message (MOFWD request) initiated by the G-MSC, the message content includes the number of the source user, the number of the destination user, message content and other information;

302: GSM network short message center G-SMSC returns a call-up response message (mofwd response) to G-MSC, including message content, source user information, destination user information, etc., for a successful message, a successful call list is issued, for a failure message , the response includes information such as the reason for the failure, and a failure call list is issued;

303: Since the CDMA network user is considered as the local network user in the GSM network, and its home HLR (Home Location Register) is G-MAP, the G-SMSC sends a routing request to the G-MAP after receiving the G-MSC calling message Message (SRI request), the message body includes source user, destination user address and other information;

304: Because G-MAP also visits MSC (mobile switching center) in GSM network as CDMA network user simultaneously, so after receiving the routing request message of G-SMSC, G-MAP loops to G-SMSC loop routing response message (sri Response), the message body includes the source user, the destination user, and the address of the MSC, which is the address of the G-MAP. If it fails, it will return the reason for the failure;

305: G-SMSC receives the routing response message, and for a successful response message, initiates a call termination request message (MTFWD request) to G-MAP according to the MSC address, including message content, source user, destination user and other information;

306: After the G-MAP receives the terminal call request message of the G-SMSC, it calls the GC conversion function (MtFwdToSmdppDeliverReq) to convert the GSM terminal call message into a CDMA terminal call message, and then sends the terminal call request message (MtToMscReq) to the C-MAP; The main function of the GC conversion function (MtFwdToSmdppDeliverReq) is to identify and collect useful information in the terminal call request message of the GSM network, including message content, source user, destination user, message destination address, etc., and then use these information to construct the CDMA network Short message terminal call request message.

307-310: C-MAP receives the end call request message from G-MAP, and performs the CDMA short message end call process (consistent with the original CDMA end call message process);

311: C-MAP receives the terminal call response message returned by C-MSC, and forwards the terminal call response message to G-MAP. The message body includes information such as source user and destination user, and the failure message includes information such as failure reason;

312: G-MAP receives the end-call response message sent by C-MAP, calls the GC conversion function (SmdppRspToMtFwdRsp) to convert the CDMA end-call response message into a GSM end-call response message, and then sends the end-call response message to G-SMSC ( mtfwd response), the message body includes information such as the source user and destination user in the message body, and if it fails, the message body includes information such as the reason for the failure;

The main function of the GC conversion function (SmdppRspToMtFwdRsp) is to identify and collect useful information in the terminal call response message of the CDMA network, including the source user, destination user, message destination address, etc. For the failure message, it also includes information such as the cause of the failure, and then use These information construct the short message terminal call response message of GSM network;

313: After receiving the G-MAP terminal call response message, if the G-SMSC fails to respond, it needs to send a delivery result message (RDS request) to the called G-MAP, and the message body includes the source user address, destination address, etc. information;

314: After G-MAP receives the G-SMSC delivery result message, G-MAP will record the failure caused by the unreachability of the terminal user on the CDMA network. After receiving the message that the destination terminal user is reachable or the location is changed, G-SMSC will be notified to retry the message.

Please refer to the flow chart of the notification message initiated by the GSM user in the inventive method shown in Figure 4, including steps:

401: G-MSC sends a user start-up registration message to G-HLR, and the message body includes GSM network user number and other information;

402: G-HLR returns a user start-up registration response message to G-MSC;

403: After receiving the user start-up registration message, the G-HLR judges whether the GSM network user information for the start-up registration exists in the previously saved destination user list for which the message failed to be sent, and if so, sends a start-up registration notification request message to the G-MAP (ALERT-SC), the message body includes destination user address and other information;

404: G-MAP returns a response message (alert-sc) to G-HLR after receiving the user power-on notification message from G-HLR;

405: After the G-MAP receives the user start-up notification message of the G-HLR, it simultaneously calls the GC conversion function (AlertScReqToSmsnotReq) to convert the GSM notification request message into a CDMA notification request message, and then sends a notification request message (SMSNotReq) to the C-MAP, The message body includes destination user address and other information;

The main function of the GC conversion function (AlertScReqToSmsnotReq) is to identify and collect the GSM notification request message, including information such as the address of the booting user. Utilize these information again to construct the CDMA user power-on notification message;

406: After receiving the notification request message from the G-MAP, the C-MAP sends a notification request message (cmsNotReq) to the short message center service processor SC, and the message body includes information such as the destination user address;

407: The short message center service processor SC returns a notification response message (csmNotRsp) to the C-MAP;

408: After receiving the notification response message from the short message center service processor SC, the C-MAP returns a notification response message (SMSNotAck) to the G-MAP.

Please refer to the flow chart of the notification message initiated by the CDMA user in the method of the present invention shown in Figure 5, including steps:

501: The C-MSC sends a user start-up registration message (REQNOT request) to the C-HLR, and the message body includes information such as the CDMA network user number;

502: C-HLR returns a user start-up registration response message (reqnot) to C-MSC;

503: After receiving the user start-up registration message, the G-HLR sends a start-up registration notification request message (SMSNOT request) to the C-MAP, and the message body includes information such as the destination user address;

504: After receiving the user start-up registration message, the C-MAP sends a start-up notification message (cmsNotReq) to the short message center service processor SC, and the message body includes information such as the destination user address;

505: After receiving the user power-on notification message of the C-MAP, the short message center service processor SC returns a notification response message (csmNotRsp) to the C-MAP;

506: C-MAP returns a notification response message (smsnot) to C-HLR after receiving the notification response message from the short message center service processor SC;

507: After receiving the user start-up registration message, the C-MAP simultaneously sends a start-up notification message (SMSNotReq) to the G-MAP, and the message body includes information such as the destination user address;

508: After G-MAP receives the user start-up notification message sent by C-MAP, it judges whether the CDMA network user information registered at start-up exists in the previously saved target user list of failed message sending, and if so, calls the GC conversion function (SmsnotReqToSmsRsp) converts the CDMA notification request into the GSM notification request, and sends the user startup notification message (ALERT-SC request) to the G-SMSC, and includes information such as the destination user address in the message body;

The main function of the GC conversion function (AlertScReqToSmsnotReq) is to identify and collect the GSM notification request message, including information such as the address of the booting user. Utilize these information again to construct the CDMA user power-on notification message;

509: G-SMSC receives the user power-on notification message sent by G-MAP, and returns a notification response message (Alert-sc response) to G-MAP;

510: After receiving the user power-on notification response message sent by G-SMSC, G-MAP calls the GC conversion function (AlertScRspToSmsnotRsp) to convert the GSM notification response message into a CDMA notification response message, and then sends a response message (SMSNotAck) to C-MAP .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

1, a kind of method that realizes CDMA and GSM short message intercommunication is characterized in that, comprises steps: a: The first network user sends a short message to the second network destination user; b: the short message center of the first network converts the short message termination message signaling into a routing request message recognizable by the second network, and forwards the routing request message to the home location register of the second network to request routing; c: identifying the routing response message returned by the home location register of the second network, and sending the final call message of the second network to the destination address for the successful message; d: Automatically identify the end-call response message sent by the second network, and convert it into the corresponding end-call response message of the first network, and the short message center of the first network issues a bill. 2, realize the method for CDMA and GSM short message intercommunication as claimed in claim 1, it is characterized in that, shut down for the second network purpose user, short message sends failure, when the purpose user starts up again, step c also comprises the step: c1: the second network home location register sends the user start-up registration message to the short message center of the CDMA network; c2: The short message center of the CDMA network converts the message signaling into a power-on notification message of the first network. 3. The method for realizing short message intercommunication between CDMA and GSM according to claim 1 or 2, wherein the first network is a CDMA network, and the second network is a GSM network. 4. The method for realizing short message intercommunication between CDMA and GSM according to claim 1 or 2, wherein the first network is a GSM network, and the second network is a CDMA network. 5. The method for realizing short message intercommunication between CDMA and GSM according to claim 4, characterized in that, after step c2, it further comprises sending a GSM network startup notification message to the GSM network short message center. 6. A gateway for short message intercommunication between CDMA and GSM, including the mobile switching center G-MSC of the GSM network, the home location register G-HLR of the GSM network, the short message center G-SMSC of the GSM network, and the home location register of the CDMA network The mobile switching center C-MSC of C-HLR, CDMA network is characterized in that, also comprises: CDMA network service processor SC, CDMA network service processor CG user configuration management station SCCF, CDMA signaling processing front-end machine C-MAP , GSM signaling processor front-end G-MAP; The CDMA network service processor SC is used to process CDMA short message service data and generate bills; The CDMA network service processor CG user configuration management station SCCF is used to store the number segment information of the CDMA network user and the GSM network user, and regularly synchronizes the data to the service processor SC; The CDMA signaling processing front-end C-MAP is used to process the CDMA short message center service processor SC, the home location register C-HLR of the CDMA network, and the message sent by the mobile switching center C-MSC of the CDMA network, or send a message to These adjacent network elements; The front-end G-MAP of the GSM signaling processor is used to process the messages sent by the GSM network, convert these signaling messages into signaling messages recognizable by the CDMA network, and send them to the C-MAP; and receive messages from the C-MAP Signaling messages, converting these signalings into signaling messages that can be recognized by the GSM network, and sending them to network elements of the designated GSM network. 7. The gateway realizing CDMA and GSM short message intercommunication as claimed in claim 6, characterized in that, the CDMA signaling processing front-end C-MAP is also used to transfer the terminal call to the final call message of the GSM network, the GSM network The user power-on notification response message and the CDMA network user power-on notification message are forwarded to G-MAP; and receive the terminal call response message from the G-MAP to the GSM network, the GSM network user power-on notification message, and the CDMA network user power-on notification response message . 8. The gateway for realizing CDMA and GSM short message intercommunication as claimed in claim 6 or 7, wherein said G-MAP is also used to receive the routing request message and terminal call sent by the GSM network short message center G-SMSC. message, and return to the GSM network short message center G-SMSC routing request response message, end call response message. 9. The gateway for realizing CDMA and GSM short message intercommunication according to any one of claims 6 to 8, wherein the G-MAP is also used to forward the CDMA network user power-on notification signaling from the C-MAP The message is converted into a power-on notification message for GSM network users and forwarded to G-SMSC. 10. The gateway for realizing CDMA and GSM short message intercommunication according to any one of claims 6 to 9, characterized in that, the CDMA signaling processing front-end C-MAP and the GSM signaling processing front-end G- The MAP exists as a separate signaling processing module or belongs to the same signaling processing module.

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