CN100403817C - Data Message Forwarding Method - Google Patents

Abstract

The invention discloses a data message forwarding method for mobile communication. A data message forwarding attribute corresponding to the first terminal is set. When the second terminal sends a data message to the first terminal, the home location register determines whether the forwarding type is unconditional forwarding, the home location register determines whether the first terminal is unreachable, and the mobile switching center determines whether the first terminal is unreachable, To determine whether to forward the data message to the forwarding terminal, and realize the forwarding of the data message.

Description

Data Message Forwarding Method

technical field

The invention relates to the field of wireless mobile communication, in particular to a data message forwarding method.

Background technique

Short Message Service (Short Message Service, SMS) is a telecommunications service that transmits short text messages over the mobile network through signaling. Short message services mainly include point-to-point short message services and cell broadcast short message services.

The currently provided short message service is mainly a point-to-point short message service, which can send a short message from one mobile terminal to another mobile terminal, or send a short message to a designated mobile terminal through a manual station or an automatic station. That is, a short message is sent from an entity to the designated called user through the mobile station initiating the short message service (Mobile Originated, MO) and the mobile station terminating the short message service (MobileTerminated, MT).

The point-to-point short message is realized through the storage and forwarding of the short message service center. The short message sent by one mobile terminal A to another mobile terminal B is divided into two independent processes: terminal A sends the short message to the short message service center, and the short message service The center then forwards to terminal B. The successful sending of the short message by terminal A means that the short message service center has received the short message sent by terminal A, but not that terminal B has received the short message sent by terminal A. Certainly, terminal A may request the short message service center to send back a short message transmission report through function setting, informing terminal A whether the short message has been successfully sent to called terminal B.

Referring to Figure 1, the existing MT signaling process is as follows:

1. Short Message service Center (Short Message service Centre, SC or SMC) sends message Message Transfer to short message gateway MSC (Gateway MSC for Short Message Service, SMS-GMSC);

2. SMS-GMSC sends SendRoutingInfo_For_ShortMessage to the home location register (Home Locating Register, HLR) query;

3. SMS-GMSC forwards short message Forward_ShortMessage to Mobile Switching Center (Mobile Switching Centre, MSC);

4. MSC queries the Visitor Location Register (VLR) and sends the route SendInfoFor_MT_SMS, and retrieves the user's International Mobile Subscriber Identity (IMSI) and the number of the current Base Station Controller (BSC) where the user is located from the VLR;

5. MSC sends a short message MessageTransfer to the mobile station (Mobile Station, MS);

6. The MS sends a forwarding report Delivery Report back to the MSC; and

7. The MSC sends the Delivery Report back to the SMS-GMSC.

If the mobile station is turned off or not in the service area and cannot be contacted, the sending of the short message will fail, but the short message service center will save the short message and set a waiting flag in the HLR. Once the user turns on or returns to the service area, the system will promptly Notify the short message service center to resend.

Currently, the application of short messages is very common and has become an important growth point of communication revenue. With the development of the mobile terminal market, everyone has not only one mobile phone, but also more than one mobile phone number, so there is a demand for mobile phone short messages to be forwarded. The current situation is that the mobile phone terminal can support the SMS (ie, short message) forwarding setting function through the man-machine interface (Man-Machine Interface, MMI), but the network core access side equipment does not support this function.

Since the data forwarding function between mobile terminals cannot be realized, when the user performs voice call forwarding, services such as short messages cannot be forwarded synchronously, resulting in inconvenient use and causing impact or loss to the user.

Contents of the invention

The main purpose of the present invention is to provide a data message forwarding method, which is used to overcome the problem that data forwarding such as short messages cannot be realized at the network core and access side due to limitations and defects of the prior art.

In order to achieve the above purpose, according to the first aspect of the present invention, the present invention provides a data message forwarding method for mobile communication. Proceed as follows:

S202. Set a data message forwarding attribute corresponding to the first terminal;

S204. The second terminal sends a data message to the data message service center, and the target terminal of the data message is the first terminal;

S206. The data message service center sends the data message to the data message gateway mobile switching center, and the data message gateway mobile switching center requests the routing information of the first terminal from the home location register of the first terminal;

S208. Send the data message to the forwarding terminal according to the forwarding attribute and under a specific condition for forwarding.

In step S202, setting the forwarding attribute may be to set the forwarding type and the forwarding terminal identification code by the first terminal or the operator, save the forwarding type and the forwarding terminal identification code in the home location register, and may be set by the home location register At the same time or when the first terminal performs location update, it is sent to the visitor location register of the first terminal. Forwarding types can include unconditional forwarding and unreachable forwarding.

In step S208, the determination of specific conditions is as follows:

The home location register judges whether the forwarding type is unconditional forwarding, and if it is unconditional forwarding, the forwarding terminal identification code is sent to the data message gateway mobile switching center;

When the forwarding type is not unconditional forwarding, the home location register judges whether the first terminal is inaccessible, and if inaccessible, sends the forwarding terminal identification code to the data message gateway mobile switching center; and

When the forwarding type is not unconditional forwarding and the HLR does not determine that the first terminal is unreachable, the HLR sends the routing information of the first terminal to the data message gateway mobile switching center, and the data message gateway mobile switching center according to the first The routing information of the terminal sends the data message to the mobile switching center where the first terminal is located. If the mobile switching center where the first terminal is located finds that the first terminal is unreachable, it sends unreachable information to the access location register of the first terminal. In response to the unreachable information, the location register sends the forwarding terminal identification code to the mobile switching center where the first terminal is located, and the mobile switching center where the first terminal is located sends the forwarding terminal identification code to the data message gateway mobile switching center.

The data message may be a short message, or other data messages, such as image data, audio data, video data, and so on.

In order to achieve the above object, according to the second aspect of the present invention, the present invention provides a data message forwarding method for mobile communication. The data message forwarding type and the forwarding terminal identification code are set in the home location register of the first terminal. The HLR may send the forwarding terminal identification code to the VLR of the first terminal. Forwarding types can include unconditional forwarding and unreachable forwarding.

The method may also include the steps of:

S2101, the second terminal sends a data message to the data message service center, the target terminal of the data message is the first terminal, the data message service center sends the data message to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the home location register requesting routing information of the first terminal;

S2102, the home location register judges whether the forwarding type is unconditional forwarding, if yes, proceed to step S2104, if not, proceed to step S2106;

S2104. The home location register sends the forwarding terminal identification code to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal according to the forwarding terminal identification code;

S2106, the home location register determines whether the first terminal is inaccessible, if it is determined that it is inaccessible, proceed to step S2108, if it is not determined that it is inaccessible, then proceed to step S2109;

S2108. The home location register sends the forwarding terminal identification code to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal according to the forwarding terminal identification code;

S2109. The HLR sends the routing information of the first terminal to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the mobile switching center where the first terminal is located according to the routing information of the first terminal;

S2110, if the mobile switching center where the first terminal is located finds that the first terminal is unreachable, proceed to step S2112, and if it is accessible, proceed to step S2114;

S2112. Send unreachable information to the visitor location register of the first terminal, and the visitor location register sends the forwarding terminal identification code to the mobile switching center where the first terminal is located in response to the unreachable information, and the mobile switching center where the first terminal is located will forward the The terminal identification code is sent to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal according to the forwarding terminal identification code; and

S2114. The mobile switching center where the first terminal is located sends the data message to the first terminal.

The data message can be a short message, or other data messages, such as image data, audio data, video data and so on.

Through the above technical solution, the present invention sets the data message forwarding attribute corresponding to the first terminal. When the second terminal sends a data message to the first terminal, the home location register determines whether the forwarding type is unconditional forwarding, the home location register determines whether the first terminal is unreachable, and the mobile switching center where the first terminal is located determines whether the first Whether the terminal is unreachable is used to determine whether to forward the data message to the forwarding terminal, and realize the forwarding of the data message. By improving the software design of the system and terminal, the present invention enables the existing communication system and terminal to support the forwarding of short messages or other data messages, solves the requirement that mobile terminals can be set to forward short messages or data services, and brings great benefits to mobile users. convenience.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the MT processing flowchart of prior art without forwarding;

Fig. 2 is a flow chart of the data message forwarding method according to the present invention;

Fig. 3 is a flow chart of the data message forwarding method according to the present invention;

Fig. 4 is the MT processing flowchart of unconditional forwarding according to the present invention; And

Fig. 5 is a flow chart of MT processing of unreachable forwarding found by MSC according to the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The invention solves the problems not considered in the short message protocol. In actual application, the protocol only realizes the point-to-point short message service of the mobile terminal. After the terminal transfers the call, the short message cannot be forwarded correspondingly, causing inconvenience to the user. The present invention realizes the forwarding function of short messages and other data messages by making certain supplements and modifications to the protocol, and satisfies the needs of users.

As shown in Figure 2, the data message forwarding method for mobile communication provided by the present invention includes the following steps:

S202. Set the data message forwarding attribute corresponding to the first terminal. The setting may be that the first terminal or the operator sets the forwarding type and the forwarding terminal identification code, and stores the forwarding type and the forwarding terminal identification code in the home location register, and It can be sent by the home location register to the visitor location register of the first terminal at the same time as setting or when the first terminal performs a location update, wherein the forwarding type can include unconditional forwarding and unreachable forwarding, and when the forwarding process is triggered, it will send Forwarding the data message to the first terminal to the forwarding terminal;

S204. The second terminal sends a data message to the data message service center, and the target terminal of the data message is the first terminal;

S206. The data message service center sends the data message to the data message gateway mobile switching center, and the data message gateway mobile switching center requests the routing information of the first terminal from the home location register of the first terminal;

S208. According to the forwarding attribute, if the specific condition for forwarding is met, the data message gateway mobile switching center obtains the forwarding terminal identification code, and the data message gateway mobile switching center sends the data message to the forwarding terminal according to the forwarding terminal identification code.

Among them, the determination of specific conditions is as follows:

The home location register judges whether the forwarding type is unconditional forwarding, and if it is unconditional forwarding, the forwarding terminal identification code is sent to the data message gateway mobile switching center;

If the forwarding type is not unconditional forwarding, but unreachable forwarding, the home location register judges whether the first terminal is unreachable (for example, power off), and if unreachable, the forwarding terminal identification code is sent to the data message gateway mobile switching center; and

When the forwarding type is unreachable forwarding and the HLR does not determine that the first terminal is unreachable, the HLR sends the routing information of the first terminal to the data message gateway mobile switching center, and the data message gateway mobile switching center according to the first terminal The routing information of a terminal sends the data message to the mobile switching center where the first terminal is located. If the mobile switching center where the first terminal is located finds that the first terminal is unreachable (for example, there is no response to paging), it sends the data message to the mobile switching center where the first terminal is located. The visitor location register sends the unreachable information, and the visitor location register sends the forwarding terminal identification code to the mobile switching center where the first terminal is located in response to the unreachable information, and the mobile switching center where the first terminal is located sends the forwarding terminal identification code to the data message Gateway Mobile Switching Center.

Those skilled in the art will appreciate that the above-mentioned data message may be a short message, and may also be other data messages, such as image data, audio data, video data, and the like. The data message service center may be a short message service center or the like. The data message gateway mobile switching center can be SMS-GMSC and so on. A mobile switching center may be an MSC. Unreachable may be shutdown, no response to paging, network congestion, etc.

As shown in Figure 3, the data message forwarding method for mobile communication provided by the present invention includes the following steps:

The data message forwarding type and the forwarding terminal identification code are set in the home location register of the first terminal. Forwarding types can include unconditional forwarding and unreachable forwarding. The HLR may send the forwarding terminal identification code to the VLR of the first terminal.

S2101, the second terminal sends a data message to the data message service center, the target terminal of the data message is the first terminal, the data message service center sends the data message to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the home location register requesting routing information of the first terminal;

S2102, the home location register judges whether the forwarding type is unconditional forwarding, if yes, proceed to step S2104, if not, proceed to step S2106;

S2104. The home location register sends the forwarding terminal identification code to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal according to the forwarding terminal identification code;

S2106, the home location register determines whether the first terminal is inaccessible (for example, power off), if it is determined that it is inaccessible, proceed to step S2108, if it is not determined that it is inaccessible, then proceed to step S2109;

S2108. The home location register sends the forwarding terminal identification code to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal according to the forwarding terminal identification code;

S2109. The HLR sends the routing information of the first terminal to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the mobile switching center where the first terminal is located according to the routing information of the first terminal;

S2110, if the mobile switching center where the first terminal is located finds that the first terminal is unreachable (for example, there is no response to paging), proceed to step S2112, and if reachable, proceed to step S2114;

S2112. Send unreachable information to the visitor location register of the first terminal, and the visitor location register sends the forwarding terminal identification code to the mobile switching center where the first terminal is located in response to the unreachable information, and the mobile switching center where the first terminal is located will forward the The terminal identification code is sent to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal according to the forwarding terminal identification code; and

S2114. The gateway mobile switching center sends the data message to the first terminal.

It is also easy to realize that the data message may be a short message, but may also be other data messages, such as image data, audio data, video data, and the like. The data message service center may be a short message service center or the like. The data message gateway mobile switching center can be SMS-GMSC and so on. A mobile switching center may be an MSC. Unreachable may be shutdown, no response to paging, network congestion, etc.

The realization method of the present invention is not unique, here only take mobile phone (that is, mobile terminal) and MT termination short message implementation scheme as an example to illustrate, mobile phone first realizes short message forwarding setting, as unconditional forwarding setting or unreachable forwarding, register mobile phone in HLR The forwarding type of the short message and the forwarding mobile phone number. The implementation process of the MT termination short message will be described below.

[Example 1] Unconditional forwarding

Fig. 4 is a flow chart of MT unconditional forwarding of short messages in the present invention. Assuming that terminal C sends a short message to terminal A, terminal A forwards the short message to terminal B, terminal A belongs to HLRa, and terminal B belongs to HLRb.

The implementation process is as follows:

The process of mobile terminating a short message is similar to the process of a mobile user being called. The short message service center sends the received short message to the SMS-GMSC, and the SMS-GMSC requests the routing information necessary for sending the short message from HLRa, and HLRa returns and forwards the short message. Indicate and forward the number of the terminal. After receiving the forwarding information, SMS-GMSC analyzes the HLRb where the forwarding terminal is located, and then continues to request the routing information necessary for sending short messages from HLRb. After obtaining the routing information, the SMS is sent to the forwarding terminal. MSCb, and then the MSCb sends the short message to the forwarding mobile phone. The key to the whole process is the secondary HLR routing request of SMS-GMSC.

(1) After receiving the send_routing_info message, HLRa checks first, if the user has set unconditional short message forwarding, then HLRa replies forwarding instruction and forwarding terminal number to the short message service center, otherwise, it will be processed according to the normal non-forwarding short message processing flow ;

(2) SMS-GMSC analyzes the HLRb address where the forwarding terminal is located, and requests the necessary routing information for sending short messages to HLRb; HLRb normally returns the required routing information;

(3) After the SMS-GMSC obtains the routing information, it transmits the short message to the MSCb where the forwarding terminal is located, and the subsequent processing is the same as the existing short message processing.

[Example 2] Unreachable forwarding

When the network cannot reach the user, it will be forwarded to other users, such as user shutdown, no response to paging, network congestion, etc. Unreachable forwarding is divided into unreachable found by HLR (such as user shutdown) and unreachable discovered by MSC (such as no response to paging), and there are two corresponding forwarding processes.

The first kind of forwarding processing flow chart of HLR discovering that the user is powered off and unreachable is the same as that of unconditional forwarding, except that in (1) send_routing_info_ack replies to the SMS service center with the information of terminal A being powered off and the forwarding terminal number, and the subsequent processing is also Same as unconditional forwarding.

Figure 5 shows the processing flow of the second type of inaccessibility found by the MSC.

Assuming that terminal C sends a short message to terminal A, terminal A is unreachable and forwards the short message to terminal B, terminal A belongs to HLRa, and terminal B belongs to HLRb.

The short message service center sends the received short message to SMS-GMSC, and SMS-GMSC obtains the routing information necessary for sending the short message from HLRa, and then transmits the short message to MSCa where terminal A is located. There is no response to the call, so MSCa returns no response to MS paging to VLRa, so VLRa triggers unreachable processing, returns the number of the forwarding terminal to MSCa, and MSCa returns unreachable information and the number of the forwarding terminal to SMS-GMSC. After SMS-GMSC receives the forwarding information, it re-analyzes the HLRb where the forwarding terminal is located, and then continues to request the routing information necessary for sending short messages from HLRb, and after obtaining the routing information, sends the short message to the MSCb where the forwarding terminal is located, and then MSCb Send the short message to forwarding terminal B. The key to the whole processing flow is the unreachable processing of VLRa and the reporting of the forwarding terminal number.

(1) After HLRa receives the send_routing_info message, it is processed according to the normal short message processing flow, that is, HLRa replies send_routing_info_ack routing information to SMS-GMSC, and SMS-GMSC forwards the short message map_forward_sms to MSCa;

(2) After MSCa finds that terminal A has no response, it reports to VLRa through the map_send_info_for_mt_sms message. After VLRa judges that it is unreachable, it returns the forwarding terminal number to MSCa, and MSCa replies to SMS-GMSC with an unreachable indication and forwarding terminal number;

(3) The SMS-GMSC triggers the process of resending the short message to the forwarding terminal B according to the unreachable forwarding settings registered by the terminal A and the reported unreachable information.

It is worth noting that when the MSC and the VLR are integrated, the MSC queries the VLR for routing or transmits messages, and the VLR returns the number to the MSC. corresponding to the function.

The invention realizes that the mobile terminal can forward short messages or data services to different mobile terminals, and brings convenience to the use of mobile users. It should be noted that the present invention is the realization of the data forwarding function between mobile terminals in a broad sense, including but not limited to the forwarding of mobile phone short messages and data.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. A data message forwarding method, comprising the following steps: S202. Set a data message forwarding attribute corresponding to the first terminal; S204. The second terminal sends a data message to the data message service center, where the target terminal of the data message is the first terminal; S206. The data message service center sends the data message to the data message gateway mobile switching center, and the data message gateway mobile switching center requests the routing information of the first terminal from the home location register of the first terminal; S208. Send the data message to a forwarding terminal according to the forwarding attribute of the data message and under a specific condition for forwarding; Wherein, the data message forwarding attributes include: forwarding type and forwarding terminal identification code, and the step S202 further includes: storing the forwarding type and forwarding terminal identification code in the home location register, and the forwarding type includes unconditional forwarding and unreachable forwarding; The step S202 further includes: the HLR sending the data message forwarding attribute to the VLR of the first terminal; It is characterized in that the sending the data message to the forwarding terminal under the specific conditions for forwarding includes: When the forwarding type is unreachable forwarding and the HLR does not determine that the first terminal is unreachable, the HLR sends the routing information to the data message gateway mobile switching center, The data message gateway mobile switching center sends the data message to the mobile switching center where the first terminal is located according to the routing information, and if the mobile switching center where the first terminal is located finds that the first terminal cannot And, sending unreachable information to the visitor location register, the visitor location register responding to the unreachable information, sending the forwarding terminal identification code to the mobile switching center where the first terminal is located, and the second The mobile switching center where a terminal is located sends the forwarding terminal identification code to the data message gateway mobile switching center. 2. The data message forwarding method according to claim 1, wherein the data message comprises a short message. 3. A data message forwarding method, comprising the following steps: Setting the data message forwarding type and forwarding terminal identification code in the home location register of the first terminal; and Forwarding the data message sent to the first terminal to the forwarding terminal according to the data message forwarding type and the forwarding terminal identification code; Wherein, the HLR sends the forwarding terminal identification code to the VLR of the first terminal; It is characterized in that it also includes the following steps: S2101. The second terminal sends a data message to a data message service center, where the target terminal of the data message is the first terminal, and the data message service center sends the data message to a data message gateway mobile switching center, the The data message gateway mobile switching center requests the routing information of the first terminal from the home location register; S2102, the home location register judges whether the forwarding type is unconditional forwarding, if yes, proceed to step S2104, if not, proceed to step S2106; S2104. The home location register sends the forwarding terminal identification code to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal; S2106. The home location register judges whether the first terminal is inaccessible. If it is judged that it is inaccessible, proceed to step S2108. If it is not judged that it is inaccessible, proceed to step S2109; S2108. The home location register sends the forwarding terminal identification code to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal; S2109. The home location register sends the routing information to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the first terminal according to the routing information. mobile switching center; S2110, if the mobile switching center where the first terminal is located finds that the first terminal is unreachable, proceed to step S2112, and if it is accessible, proceed to step S2114; S2112. Send unreachable information to the visitor location register, and the visitor location register sends the forwarding terminal identification code to the mobile switching center where the first terminal is located in response to the unreachable information, and the first terminal The mobile switching center where the terminal is located sends the forwarding terminal identification code to the data message gateway mobile switching center, and the data message gateway mobile switching center sends the data message to the forwarding terminal identification code according to the forwarding terminal identification code. terminal; and S2114. The mobile switching center where the first terminal is located sends the data message to the first terminal. 4. The data message forwarding method according to claim 3, wherein the data message comprises a short message.

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