WO2005096640A1

WO2005096640A1 - A method for a serving gprs support node transmitting information to a mobile station

Info

Publication number: WO2005096640A1
Application number: PCT/CN2005/000330
Authority: WO
Inventors: Guangwei Wang; Peng Luo
Original assignee: Huawei Technologies Co. Ltd.
Priority date: 2004-03-19
Filing date: 2005-03-17
Publication date: 2005-10-13
Also published as: CN1332570C; CN1671221A

Abstract

The present invention is a method for a SGSN to transmit information to a mobile station, at the time the SGSN generating the message for transmitting to the mobile station, which method would generate a short message containing the particular content of the message. In this manner, the mobile station can receive the message from SGSN, as well as the message that can display the particular content in the interface, and can solve the proms em of being unable to display the particular content of the message due to the limitation of the mobile station . With this method, a user can obtain an explicit message indication from the SGSN, and can also improve the user's satisfaction to the network service. In the case of the network with large scale, by employing the method of the SGSN triggering a short message and directly delivering the short message to a mobile station, the air interface load of the MSC can be reduced and the network transmission efficiency can be significantly improved.

Description

Method for serving general packet radio service support node to send information to mobile station

The present invention relates to a general packet radio service (General Packet Radio Service, GPRS) technology, and in particular, to a method for sending information to a mobile station (Mobile Station, MS) by a serving GPRS support node (Serving GPRS Support Node, SGSN). Background of the invention

At present, GPRS networks and Wide Code Divided Multiple Address (WCDMA) networks, which are applied to high-speed Internet access, are still in the ascendant, and GPRS networks in particular are being used on a large scale.

GPRS is a mobile packet data service developed on the basis of the existing GSM mobile communication system. GPRS introduces the function of packet switching in the GSM digital mobile communication network to complete packet data transmission. The GPRS system can be seen as a service expansion based on the original GSM circuit-switched system to support the needs of mobile users to access the Internet or other packet data networks using packet data mobile terminals.

Figure 1 is a schematic diagram of the GPRS network architecture. As can be seen from Figure 1, the GPRS system includes a GPRS core network and a GSM system. The GPRS core network includes a SGSN and a gateway GPRS support node (Gateway GPRS Support Node, GGSN). SGSN main

Protocol, IP) packet data. In addition, the SGSN also provides encryption and authentication functions, session management functions, mobility management functions, logical link management functions with MSs, and bill generation and output functions.

Therefore, the SGSN is the bridge between the mobile station and the external network in the service area of the SGSN. It can not only forward the input / output packet data, but also generate many messages that interact with the MS. Information, and perform message interaction with the MS.

For example, after the MS accesses the GPRS network and passes authentication, if it wants to use the GPRS monthly service, it also needs to send a Packet Data Protocol (PDP) context request message to the SGSN. After the SGSN accepts the activation of the MS, According to the subscription information of the user and the access point name (APN) requested by the user to determine which one to use in the PDP activation environment, the SGSN can provide routing and forwarding functions for the packet data packets in the SGSN area, and the downstream packets The data packet is sent by the SGSN to the MS via the BSS, and the uplink data packet is sent by the SGSN to the external data network through the GGSN.

The user edits the APN on the MS, and the MS sends an activation PDP request message carrying the APN to the SGSN. After receiving the activation request message from the MS, the SGSN determines whether the APN entered by the user is correct. If the SGSN judges that the APN is correct, the MS is accepted. If the SGSN determines that the APN is incorrect, the MS may use the GPRS service, such as browsing the webpage, sending email, sending and receiving MMS, etc., and then rejecting the MS's activation request. APN is the domain name of the Internet Service Provider (ISP). The SGSN stores the APN of all ISPs contracted with the user. When the user sends an activation request, the SGSN allows the user to use only when the correct APN of the ISP is entered. This ISP provides GPRS services for packet data services. In general, users often enter the wrong APN, or even forget to enter the APN, which will cause the activation to fail. The SGSN should inform the user of the specific cause of the activation failure.

When the MS sends a PDP activation request to the SGSN, in addition to having to enter the APN, it is also possible to enter the IP address assigned to the MS by the ISP. Like the APN, the SGSN stores the IP address assigned by the ISP to the MS when the user signs up. Only the SGSN determines The user entered the correct IP address assigned by the ISP before allowing the user to use the GPRS service provided by the ISP. Incorrect input of the IP address will also cause activation failure. Similarly, when activating a PDP context, a user may enter several Quality of Service (QoS) parameters as QoS requests to inform the network of the required bandwidth. The SGSN also judges based on the QoS entered when the user signs with the ISP. Whether to accept its QoS request. Due to the large number of QoS parameters and strong professionalism, ordinary users often cannot enter appropriate QoS parameters. If users cannot enter appropriate QoS parameters, the SGSN is likely to not accept its QoS. At this time, the SGSN should inform the user that the QoS is not affected. Specific reasons for acceptance.

This situation is specified in the 3rd Partnership Project (3GPP) agreement. The agreement stipulates that, when the MS enemies the PDP, if the APN is not entered or the wrong APN is entered, the SGSN sends an activation reject message to the MS, and the activation reject message carries the specific reason for entering the wrong APN; For the requested QoS, the SGSN sends an activation reject message to the MS, and the activation reject message carries the specific reason for not accepting the QoS.

Although relatively good specifications have been formulated in the 3GPP protocol, for existing MSs, it may not be possible to display messages that meet the specifications. This is because the business layer in the existing MS often does not fully parse the message sent by the protocol processing layer, causing the MS to fail to display the entire content of the message. For example, when the MS receives an activation rejection message from the SGSN that carries the specific reason for the activation failure, it can only show that the activation is rejected, but cannot display the specific reason for the activation failure. In this way, the user only knows the result of the activation failure, but does not know what causes the activation failure, resulting in that the user cannot make targeted modifications based on the specific error cause. For example, after a user enters an incorrect APN, the SGSN rejects its PDP activation request and sends an activation rejection message. However, the MS can only display "Failed to activate PDP", and cannot display the specific error prompt carried in the activation rejection message.

In addition, with the continuous enrichment of services, the network needs to be able to send more and more specific information to the MS to notify users of some important information. For example, after a user roams to a new area, the operator in the area should send a roaming reminder short message to the user. The user is welcomed, and the purpose of prompting the user to change the position can be achieved. In the existing network, the MSC sends such messages to the MS. When the network size is large, the MSC sends messages to the MS, which will increase the air interface load of the MSC. This requires the packet network to send such messages, that is, It is required that the SGSN can assume the function of sending messages for the MSs in this area. However, although the SGSN sends a roaming message to the MS, the MS can also receive the roaming message from the SGSN. However, due to the functional defect of the MS, the roaming notification message cannot be displayed to the user in the form of an interface, causing inconvenience to the user.

As described above, when the MS receives a message from the SGSN, due to the existing defect of the existing MS, it may not be able to clearly display specific information. The specific information may be specific error cause values, or some related to the user. Other important information about the good month used by the network. When the user cannot obtain these specific information clearly, it not only affects the normal Internet access, but also greatly reduces the user's satisfaction with the network service ^ ^. Summary of the invention

The main object of the present invention is to provide a method for the SGSN to send information to the MS. The SGSN independently triggers a short message and sends the information to a multi-mobile station in the form of a short message.

The method for sending information to the mobile station by the SGSN according to the present invention includes:

A. The SGSN generates a message for sending to the mobile station, and generates a short message containing the specific content of the message;

B. The SGSN sends the message and the short message to the mobile station.

After step B, the method further includes: the mobile station displays the message after receiving the message from the SGS and the short message, and displays the short message including the specific content of the message.

The message in step A is a packet data protocol context activation failure message, and the short message is a short message containing the reason for the packet data protocol context activation failure and correct access information. Before step A, the method further includes: receiving, by the SGSN, an activation packet data protocol context request message from the mobile station containing correct access information;

The SGSN determines whether to accept the request according to the access information in the request message. If the access information in the request message is consistent with the correct access information stored in the SGSN in advance, the packet data protocol context is activated; otherwise, step A is performed. The generating a packet data processing context activation failure message, and simultaneously generating a short message including a reason for the packet data protocol context activation failure and correct access information.

The access information is an access point name of a network provider contracted with the user, or the Internet Protocol address information allocated by the access point name and the network provider to the user when signing the contract.

The message in step A is a roaming notification message, and the short message is a short message including roaming area information and roaming related information.

Before step A, the method further includes: the SGSN detects the international mobile subscriber identity of the mobile station in the area;

The SGSN determines whether the mobile station is a mobile station roaming from another area according to the detected international mobile subscriber identity, and if so, performs step A to generate a roaming notification message, and simultaneously generates roaming area information and roaming related information. SMS; otherwise end.

Step B includes: The SGSN directly sends messages and short messages to the mobile station via the base station subsystem.

Step B includes: the SGSN directly sends the message to the mobile station via the base station subsystem, and sends the short message to the short message center;

The short message center receives the short message, performs charging processing on the short message, and then forwards the short message to the mobile switching center;

The mobile switching center forwards the short message to the mobile station via the base station subsystem.

The present invention further includes the step of setting a separate charging method for the short message whose sender is the SGSN in advance, and the charging process for the short message is: The set accounting method performs accounting processing on the short message.

According to the method of the present invention, when the SGSN generates a message to the mobile station, it also generates a short message containing the specific content of the message, and sends the message and the short message to the MS. The MS receives the message from the SGSN. After the message and the short message, the short message can be displayed in the form of an interface, so as to know the specific content of the message. In the existing four methods, the SGSN does not generate short messages, but only generates messages. However, due to its own functional defects, the MS may not be able to display the specific content contained in the received message, and it is used by the application. Many inconveniences were caused during the GPRS service. Therefore, it can be seen that the method of the present invention can clearly inform the MS of the specific content of the error information, rejection information, and other important information generated by the SGSN, and more effectively implements the information exchange between the SGSN and the MS.

At the same time, in the case of a large network size, the SGSN can trigger short messages and send them directly to the MSs in the area. This can also prevent the MSC from carrying an air interface load increase caused by short messages, thereby greatly improving the efficiency of network transmission. . Brief description of the drawings

Figure 1 is a schematic diagram of the GPRS network architecture.

2 is a schematic diagram of a method for an SGSN JL to send an activation rejection SMS to an MS according to a preferred embodiment of the present invention.

3 is a flowchart of a method for an SGSN to send an activation rejection SMS to an MS according to a preferred embodiment of the present invention.

FIG. 4 is a schematic diagram of a method for an SGSN sending an activation reject SMS to an MS via an SMSC according to a preferred embodiment of the present invention.

5 is a flowchart of a method for an SGSN to send an activation rejection SMS to an MS via an SMSC according to a preferred embodiment of the present invention.

FIG. 6 is a diagram of a preferred embodiment of the present invention. Know the method flowchart of SMS. Mode of Carrying Out the Invention

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention with reference to the accompanying drawings and specific embodiments.

The method of the present invention is implemented by sending a short message (SMS) to the MS through the SGSN. In the prior art, if the SGSN bears the SMS, the SMS is transparently transmitted to the SGSN, that is, the SGSN is only responsible for sending the SMS uploaded by the user to the Bean Message Center (SMSC), and sending the SMS issued by the SMSC Send to the corresponding MS without triggering the SMS yourself.

In the method of the present invention, the SGSN independently triggers an SMS and sends the SMS to the MS. When the SGSN generates a message, whether it is a rejection message, an error message, or a web service message, the SMS can be triggered at the same time as the message is generated. The content of the SMS is the specific content of the generated message, and the message and the SMS generated from it are generated. -It is sent to the MS via the base station subsystem ¾ (BSS). In this way, the MS, while receiving the message from the SGSN, also receives the SMS carrying the specific content of the message. The business layer of the MS is transparent to the short message and does not process it, so the MS can display the entire content of the short message. Example 1

Taking the activation rejection initiated by the SGSN to the MS as an example, the specific process of the method of the present invention is introduced. FIG. 2 is a schematic diagram of a method in which an SGSN directly sends an activation rejection SMS to an MS according to a preferred embodiment of the present invention. It can be seen from FIG. 2 that the MS sends a PDP activation request to the SGSN. After the SGSN determines that there is an error in the request, the MS sends an activation rejection message and an SMS with a specific error cause value to the MS via the BSS.

FIG. 3 shows a flowchart of the method shown in FIG. 2. As shown in FIG. 3, the method includes: Next steps:

Step 301: The user initiates a PDP activation request to the SGSN by editing the APN information on the MS.

Step 302: The SGSN analyzes the activation request sent by the MS, that is, the APN entered by the monthly user is compared with the correct APN entered by the user stored in the SGSN when signing the contract.

Step 303: The SGSN determines whether the APN entered by the user is correct, and if so, proceeds to step 304; otherwise, proceeds to step 305.

Step 304: The SGSN accepts the activation request of the MS, and then ends.

Step 305: The SGSN triggers an SMS, and the content of the SMS includes the specific reason why the SGSN judged in step 303 to reject the activation request, and the correct access information entered when the user pre-stored in SGS1 signs with the ISP.

At the same time, the SGSN triggers the activation reject message, and the content of the message also includes the specific reason why the SGSN rejected the activation request and the correct access information. In this embodiment, the specific reason for rejecting the activation request is that an incorrect APN was entered; the correct access information is the APN address of Zhengyu.

Step 306: The SGSN sends an activation rejection message to the MS via the BSS, and sends the SMS triggered by step 305 to the MS via the BSS.

Step 307: The MS receives an activation rejection message triggered by the SGSN, and simultaneously receives an SMS containing a specific reason for the activation rejection, and the SMS is displayed on the MS in an interface form.

In this way, the user can get a clear reason for the error according to the SMS displayed on the MS, and can correct the error in a targeted manner.

When the MS sends an activation request, the user may need to enter an IP address in addition to the APN. If the IP address entered by the user is incorrect, the SGSN also rejects the message: The activation request message and short message generated in the SGSN to reject the activation request In the message, the specific reason for the "Rejection" activation is that an incorrect IP address was entered; the correct access information is the correct IP address. If the APN and IP address entered by the user are incorrect, the specific reason for rejecting the activation request message and short message generated by the SGSN is that the incorrect APN and IP address were entered; the correct access information is The correct APN and IP address.

Example 2

In the currently applied network, the SMS service is generally carried by the Mobile Switching Center (MSC). In this way, if the Gid interface between the SMSC and the SGSN is opened, and the SMS triggered by the SGSN needs to be processed for billing and other processing The SGSN can send the triggered SMS to the SMSC, and then forward it to the MSC after performing accounting and other processing. MS C then forwards the SMS to the SMS via the BSS.

FIG. 4 is a schematic diagram of a method for an SGSN to send an activation rejection SMS to an MS through an SMSC according to a preferred embodiment of the present invention. As can be seen from FIG. 4, the MS sends an activation PDP request to the SGSN. Send the SMS with the specific error cause value to the SMSC, and send an activation rejection message to the MS. The SMSC forwards the received SMS from the SGSN to the MSC, and then forwards it to the MSC. The MSC forwards the SM S via the BSS. To MS.

FIG. 5 shows a flowchart of the method shown in FIG. 4. As shown in FIG. 5, the method includes the following steps:

Step 501: The user initiates a P P activation request to the SGSN by editing the APN information on the MS.

Step 502: The SGSN analyzes the activation request sent by the MS, that is, the user inputs 々 APN and compares the correct APN entered when the user saved in the SGSN signs the contract.

Step 503: The SGSN determines whether the APN entered by the user is correct, and if so, proceeds to S! J, step 504; otherwise, proceeds to step 505.

Step 504: The SGSN accepts the activation request of the MS, and then ends.

Step 505: The SGSN triggers an SMS, and the content of the SMS includes the result obtained in step 503. Of the specific reason why the SGSN rejected the activation request, and the correct access information entered by the user pre-stored in the SGSN when signing up with the ISP.

At the same time, the SGSN triggers the activation reject message, and the content of the message also includes the specific reason for the SGSN to reject the activation request and the correct access information.

In this embodiment, the specific reason for rejecting the activation request is that an incorrect APN was entered; the correct access information is the correct APN address.

Step 506: The SGSN sends an activation rejection message to the MS via the BSS, and sends the SMS triggered in step 505 to the SMSC.

Step 507: The SMSC receives the SMS from the SGSN and performs processing such as accounting.

Step 508: The SMSC forwards the SMS to the MSC.

Step 509: The MSC forwards the SMS to the MS via the BSS.

Step 510: The MS receives an activation rejection message triggered by the SGSN, and receives an SMS including a specific reason for the activation rejection, and the SMS is displayed on the MS in an interface form.

When the MS sends an activation request, the user may need to enter an IP address in addition to the APN. If the IP address entered by the user is incorrect, the SGSN also rejects the activation request. In the message and short message generated by the SGSN to reject the activation request The specific reason for rejecting the activation is that an incorrect IP address was entered; the correct access information is the correct IP address.

If the APN and IP address entered by the user are incorrect, the specific reason for rejecting the activation request message and short message generated by the SGSN is that the incorrect APN and IP address were entered; the correct access information is The correct APN and IP address.

It should be noted that the charging method of the SMS triggered by the SGSN is different from that of the general SMS, so when the SGSN sends an SMS to the SMSC, the SMSC needs to be informed that the SMS sent by the SGSN belongs to a special SMS, that is, the special SMS needs to carry a special The number of the sender. In this embodiment, the special sender is the SGSN, and the SMSC detects this special No. ^, it is known that the SMS is a special SMS, and special processing in terms of accounting is required. Example 3

Taking the SGSN sending information to a roaming mobile station as an example, the method of the present invention is introduced. 6 is a flowchart of a method for a SGSN to directly send a roaming notification SMS to an MS according to a preferred embodiment of the present invention.

Step 601: The SGSN detects the International Mobile Subscriber Identity (IMSI) of the MS in the area. Generally speaking, the network operator allocates some IMSI number segments for each area, so IMSI can identify the area to which the MS belongs.

Step 602: The SGSN determines whether the IMSI of the MS belongs to the IMSI number segment of the region. If so, it indicates that the MS is an MS in the region. Returning to step 601, the detection of the IMSI of the next MS continues; otherwise, the MS is from MS roaming in other areas, go to chaotic steps

Step 603: The SGSN triggers an SMS, and the content of the SMS includes a roaming area, welcome information, and some practical information related to roaming.

Step 604: The SGSN sends a roaming notification message to the MS via the BSS, and sends the SMS triggered by step 603 to the MS via the BSS.

Step 605: The MS receives a roaming notification message triggered by the SGSN, and simultaneously receives an SMS including a roaming area, a welcome message, and practical information related to roaming, and the SMS is displayed on the MS in an interface form.

In the specific implementation process, the method according to the present invention can be appropriately improved to meet the specific needs of specific situations. For example, a message and a short message may not be generated at the same time, or they may not be sent at the same time. Therefore, it can be understood that the specific implementation manners according to the present invention are merely exemplary and are not intended to limit the protection scope of the present invention.

Claims

Claim

1. A method for sending information to a mobile station by a serving general packet radio service support node SGSN, comprising:

A. The SGSN generates a message for sending to the mobile station, and generates a short message including the specific content of the message;

B. The SGSN sends the message and the short message to the mobile station.

2. The method according to claim 1, further comprising after step B, the mobile station displays the message after receiving the message from the SGSN and the short message, and displays the short message including the specific content of the message.

3. The method according to claim 1, wherein the message in step A is a packet data protocol context activation failure message, and the short message includes a reason for the packet data protocol context activation failure and correct access information. short message.

4. The method according to claim 3, further comprising before step A: the SGSN receives an activation packet data protocol context request message from the mobile station containing correct access information;

The SGSN determines whether to accept the request according to the access information in the request message. If the access information in the request message is consistent with the correct access information stored in the SGSN in advance, the packet data protocol context is activated; otherwise, the step A is performed. The method described above generates a packet data protocol context activation failure message, and simultaneously generates a short message including the reason for the packet data protocol context activation failure and correct access information.

5. The method according to claim 3 or 4, wherein the access information is an access point name of a network provider contracted with the user, or the access point name and the network provider are assigned to the user when signing the contract. Internet Protocol address information.

6. The method according to claim 1, wherein the message in step A is Roaming notification message, the short message is a short message including roaming area information and roaming related information.

7. The method according to claim 6, further comprising: before step A, the SGSN detects the international mobile subscriber identity of the mobile station in the area;

8. The method according to claim 1, wherein step B comprises: the SGSN directly sends the message and the short message to the mobile station via the base station subsystem.

9. The method according to claim 1, wherein step B comprises: the SGSN directly sends the message to the mobile station via the base station subsystem, and sends the short message to the short message center;

10. The method according to claim 9, wherein the present invention further comprises the step of setting a separate charging method for the short message whose sender is the SGSN in advance, and the charging processing for the short message is: short message The center performs charging processing on the short message according to the preset charging method.