CN1223163C - Short message system - Google Patents

Abstract

The invention discloses a short message system, comprising at least two short message gateways and at least two short message centers, characterized in that: at least one short message gateway is connected to two or more than two signaling transfer points of the mobile network ; At least one short message gateway is connected to two or more short message centers. By connecting the short message center gateway to more than one signaling transfer point, it becomes the backup gateway of other short message center gateways, so that the global code address change function of the signaling transfer point can be used to ensure that when a certain When the signaling gateway of the short message center fails, the link can be switched to the preset backup short message center. Similarly, since the short message gateway is connected to the standby short message center in addition to its main short message center, when a certain short message center fails, the short message gateway will automatically forward the short message to the standby short message center on processing. Therefore, the system has disaster recovery performance.

Description

short message system

Technical field:

The invention relates to a short message system.

Background technique:

The current short message system running on the mobile network adopts a single-point access mode, and each short message center operates independently in a mobile communication network (such as a GSM network). Since the number of users supported by each access point is different, the load of each short message node is not balanced. At the same time, the independent short message center has no disaster recovery feature. Once a problem occurs in a certain node, all users in the short message center will be unable to send short messages.

For example, in the current GSM network, the short message center, as a service point with independent functions, accesses the PLMN (Public Land Mobile Network, public land mobile network) network through LSTP (signaling access point). Each short message system is configured with one or several (if there are multiple short message centers) network-unique short message center access numbers, and independently completes the function of sending and receiving short messages. Each short message system operates independently without any connection with each other. Assume that there are currently three sets of short message center equipment in the operator at the same time, numbered 501, 502, and 503. The current networking scheme is shown in Figure 1, where LSTP: low-level signaling point; GIW: short message gateway; SMSC: short message Center; SMGW: short message service gateway; SP: service provider.

In Fig. 1, the three short message systems 1, 2, and 3 are not related in any way. In the mobile network, the three systems respectively process the point-to-point short messages submitted by the authenticated users of the system, and reject the short messages submitted by the non-authenticated users. The point-to-point short message service refers to the service type that sends a short message from a mobile station to a designated called user through the MO (mobile station initiates short message service) process and MT (mobile station terminates short message service) process.

On the service side, according to the operator's "service unified access" requirement, the service provider (SP) connects to the short message center through the short message service gateway (SMGW). The SMGW sends the message provided by the SP to the designated Short Message Center (SMSC) according to its own routing configuration information.

This networking method lacks system-level disaster recovery due to the one-to-one correspondence between GIW and SMSC. Once there is a problem with a node in GIW and SMSC, there will be a situation where short messages cannot be sent. Although the current dual-system mode of each node guarantees the normal operation of this point, it cannot guarantee system-level disaster recovery. For example, there is a problem with the dual-system system of SMSC1, and all short messages submitted through GIW/501 will fail.

In the current networking scheme, the short message centers are divided according to regions, and one or several cities share one short message center. Due to the difference in the number of mobile users in different regions, the load of each short message center in this networking mode is unbalanced. However, the short message system is node-independent and cannot distribute short messages to other nodes according to the system load. Once the short message center of a node is overloaded, it is easy to cause the system to crash because there is no other distribution channel.

In addition, according to the short message submission and distribution process, the submission process goes from the GIW to the SMSC through the intranet, and the message processing is very fast. The distribution process must be sent to the mobile network through the GIW, and finally sent to the mobile phone. The mobile network is a large nationwide network, and the message response is naturally very slow. Therefore, the resource time occupied by the downlink process is very long. This further exacerbates the resource conflict when the load is too large.

Invention content:

The purpose of the present invention is to solve the problem of poor disaster tolerance of the existing short message system, provide a short message system, and improve the disaster recovery performance.

Another important purpose of the present invention is to realize load balancing among multiple short message subsystems.

To achieve the above object, the present invention proposes a short message system, including at least two short message gateways (GIW) and at least two short message centers (SMSC), at least one short message gateway (GIW) is connected to two or two Above Signaling Transfer Point (LSTP), at least one Short Message Gateway (GIW) is connected to two or more Short Message Centers (SMSC), one of the two or more Short Message Centers (SMSC) The message center (SMSC) is the active short message center (SMSC), and other short message centers (SMSC) are used as the standby short message center (SMSC) of the active short message center (SMSC) while other short message centers (SMSC) are working normally; When the active short message center (SMSC) works normally, the short message gateway (GIW) sends the received short message to the active short message center (SMSC), and the active short message center (SMSC) processes the short message message; when the main short message center (SMSC) has an abnormal situation, the short message gateway (GIW) sends the received short message to one or more standby short message centers (SMSC), and the standby A Short Message Center (SMSC) handles the short message.

In a preferred embodiment, the short message center is provided with: 1) self-checking device for detecting the busy status of the short message center; 2) notification device for the busy status of the short message center Notify the short message gateway or short message service gateway that is connected with it; Described short message gateway and short message service gateway are provided with: 1) shunting device, for the short message of this short message center when a certain short message center shows busy The message is diverted to the standby message center.

Due to the adoption of the above scheme, by supporting the short message center gateway with virtual multi-signaling points, it can be connected to more than one signaling transfer point, making it a backup gateway for other short message center gateways, so that it can be used The global code (GT) address change function of the signaling transfer point and the "virtual multi-signaling point" traffic sharing ensure that when the signaling gateway of a certain short message center fails, the link can be switched to the preset backup On the short message signaling gateway. Similarly, since the short message gateway is connected to the standby short message center in addition to its main short message center, when a certain short message center fails, the short message gateway will automatically forward the short message to the standby short message center on processing. Therefore, the system has disaster recovery performance.

On the other hand, since the self-inspection, notification and short message distribution of busy and idle states are also set in the above-mentioned preferred embodiment, when the load of any short message center is too large, the message can be distributed to other idle Short message center, so that network-level load balancing can be realized.

Description of drawings:

FIG. 1 is a schematic diagram of an existing short message center network.

Fig. 2 is a schematic diagram of the network short message system of the present invention.

Fig. 3 is a schematic diagram of a flow chart of self-checking and shunting.

Fig. 4 is a networking diagram between two sets of short messages that are mutually backed up.

Detailed ways:

The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

Embodiment one:

The short message system of this embodiment is equivalent to reorganizing multiple short message systems into a larger network short message system, and an example of its network diagram is shown in FIG. 2 .

The network short message system solution shown in Figure 2 breaks the one-to-one correspondence between GIW and SMSC and GIW and LSTP in the traditional system. In the network short message system, GIW and SMSC are many-to-many concepts. GIW equipment and multiple short message centers are interconnected through a data network (that is, a packet switching network, generally referring to the internet or intranet connected through the TCP/IP protocol). The network short message center realizes disaster recovery between systems and load distribution of several short message systems. As shown in the figure, the system includes three (certainly also can be other numbers) short message gateway GIW and three short message centers SMSC, and each short message gateway GIW is connected to two (or more than two) short message gateways of the mobile network. ) on the signaling transfer point LSTP (i.e. realize multi-signaling point or virtual multi-signaling point); and, each short message gateway GIW is connected to two or more than two short message centers SMSC.

Similarly, the Short Message Service Gateway (SMGW) is also connected to each Short Message Center (SMSC) respectively.

The above-mentioned network short message system has the following characteristics in terms of disaster recovery:

1. Disaster recovery backup of short message gateway:

Each short message center gateway is respectively connected to a pair of LSTP. The GT (global code) address change function of STP can be used to ensure that when the signaling gateway of a certain short message center fails, the link can be switched to the preset backup short message center.

2. Disaster recovery backup of SMS center

Since GIW is connected to the standby SMSC in addition to its main SMSC, when a short message center fails, GIW will automatically forward MO short messages to the standby short message center for processing; similarly, the SMGW system will also The MT short messages of the SP are forwarded to the standby short message center for processing.

Embodiment two:

The second embodiment is further improved on the basis of the first embodiment, so that in addition to the advantages of disaster recovery, the network short message can also balance the load among multiple short message subsystems.

Currently, there is an obvious surge phenomenon in the sending of short messages, especially during holidays, when users greet each other through short messages. The amount of short messages sent is several times higher than usual, and it will last for several hours. The short message center is a store-and-forward center, which requests to save the unsuccessfully sent short messages and wait for further retrying in the future. A large number of messages rush to the short message center, which will cause link congestion. At the same time, due to reasons such as users not turning on the phone, not all messages will be sent successfully at one time, so in a short period of time, the temporary short messages in the short message center will be lost. more and more. The short message center should allocate resources and timing clocks for each temporarily stored short message. As the number of temporarily stored messages increases, the short message center allocates more resources to temporarily stored messages, and more time is spent on management and retrieval, resulting in a decrease in processing capacity. The decline in processing capacity leads to too many messages that cannot be processed, forming a cycle of negative amplification effects.

In order to solve the above problems, the short message center adds a system self-checking function. Once the short message center is congested, GIW and SMGW will submit messages to the standby "idle" short message center. In this way, no new message will be submitted to the "congested" active short message center through the GIW and SMGW, and the "congested" short message center will still continue to try to deliver the temporary short message to the user. As the number of stored short messages decreases, the processing capability of the short message center will return to normal. At this time, the GIW and the SMGW will resume submitting messages to the active short message center. For this reason, described short message center SMSC is provided with: 1) self-inspection device, is used to detect the busy status of this short message center SMSC; 2) notification device, is used for notifying the busy status of this short message center SMSC The short message gateway GIW or the short message service gateway SMGW that is connected with it; The short message gateway GIW and the short message service gateway SMGW are provided with: 1) diversion device, for when a certain short message center SMSC is busy, the short message The short messages of the message center SMSC are distributed to the standby message center.

The busy state of the short message center has a great relationship with the number of short messages temporarily stored in the short message center and the number of short message entities (a mobile phone number and a short message entity). In a short message center, the greater the number of these two, the greater the impact on performance. The short message regularly monitors the number of the two stored by itself, and at the same time refers to the hardware CPU and memory usage data, and divides the system operation into "idle" and "congested" levels according to the current status, and classifies the current running status through real-time interaction. The state, the number of stored entities, and the number of idle entities in the system are notified to GIW and SMGW. GIW and SMGW trigger a distribution algorithm according to the "busy message" of the short message center, and distribute the message to the short message center of the "backup function". All short message centers connected to GIW and SMGW will report their own running status, and GIW and SMGW will distribute short messages according to the running status of standby nodes when splitting traffic. Send more messages to the short message centers with more idle entities, and send less messages to busy short message centers with fewer idle entities. If all the standby short messages are in a busy state, the GIW and the SMGW will also submit short messages to the active short message center. The SMS center will handle it in other ways. Figure 3 takes GIW as an example to show the flow of self-checking and shunting.

The short message center SMSC is backed up with configuration data of other short message centers, can receive the short message submitted by the standby short message gateway GIW, and has the function of authenticating the short message submitted by the standby short message gateway GIW. The short message center number is attached to the configuration data, and the short message center SMSC manages the point-to-point authentication and routing information of different nodes according to the short message center number, so as to ensure that the configuration information of the active and standby nodes is completely independent.

The short message center SMSC network standby feature means that the short message center not only processes the short messages within its own scope, but also acts as a standby node for other nodes, and can receive messages submitted by GIW or SMGW of other nodes. Therefore, the two sets of short message centers can serve as network backups for each other. The short message center with network backup features, backups the configuration data of other short message centers, can receive short messages submitted by other nodes GIW and SMGW, and the authentication function of short messages submitted by other GIWs and its corresponding active short message center Exactly the same, the short messages submitted by other nodes GIW and SMGW are all delivered through the local GIW and SMGW. Due to the short message center systems of different nodes, the configured short message center numbers are different from each other, and there will be no duplication. The short message center manages the point-to-point authentication and routing information of different nodes according to the number of the short message center, which ensures that the configuration information of the active and standby nodes is completely independent. When the number is authenticated, it is also authenticated according to the SMS center number carried in the point-to-point SMS, which ensures that when the mobile phone in other places submits the message through the Ontology GIW, the authentication will not pass. The standby short message center stores the same data as the main short message center through data synchronization.

The configuration data of the short message center is uniformly managed through the CMC (Configuration Management Center). Fig. 4 is a network diagram between two sets of short messages which are network backups for each other. The CMC is connected to each mutually backed up short message center SMSC, and the configuration data of the short message center SMSC is uniformly managed by the configuration management center CMC, so that the backup short message center stores the same data as the main short message center through data synchronization.

As a management module, the CMC manages the configuration parameters of the short message center in a unified manner, and completes the synchronization of the configuration of the active and standby short message centers. The CMC receives the configuration update notification of the active short message center in real time, and completes the synchronization of the active short message center and the standby short message center in time. At the same time, the CMC will also periodically synchronize the data of the short message center.

The present invention has the following characteristics:

1. Realized the network backup of several short message systems, breaking the independence of the traditional single-node short message center. Within the scope of effective management (several short message centers), the short message center systems have the function of network backup, which realizes the disaster recovery of short message systems of different nodes and increases the stable running time of the system.

2. The whole scheme notifies the relevant modules through the busy indication algorithm of the short message center to carry out short message distribution. When the load of any short message center is too large, the message can be distributed to other idle short message centers to complete the network level. Load balancing. More reasonable use of the performance of each short message center. When the system is busy, the processing capacity of several short message systems is utilized to the greatest extent, and the anti-"surge" ability of the short message system is increased.

3. Complete the configuration synchronization of the short message center through the CMC.

4. At the same time, the short message center manages the configuration of each short message node according to the short message center number, which ensures the consistency of authentication of point-to-point short messages accessed by different short message center numbers.

Claims (7)

1, a kind of short-message system, comprise at least two short messaging gateways (GIW) and at least two short message service centers (SMSC), it is characterized in that, at least one short messaging gateway (GIW) is connected to two or more Signalling Transfer Points (LSTP), at least one short messaging gateway (GIW) is connected to two or more short message service centers (SMSC), a short message service center (SMSC) is main with short message service center (SMSC) in described two or more short message service centers (SMSC), and other short message service centers (SMSC) use the standby short message service center (SMSC) of short message service center (SMSC) as this master in own operate as normal; When described master used short message service center (SMSC) operate as normal, this short messaging gateway (GIW) sent to this master with short message service center (SMSC) with the short message that is received, and handles this short message by this master with short message service center (SMSC); Lead with short message service center (SMSC) when abnormal conditions occurring when described, this short messaging gateway (GIW) sends to one or more standby short message service centers (SMSC) with the short message that is received, and handles this short message by described standby short message service center (SMSC).

2, short-message system as claimed in claim 1 is characterized in that: each short messaging gateway (GIW) be connected respectively to that two or more Signalling Transfer Points (LSTP) are gone up and two or more short message service centers (SMSC) on; Each short message service center (SMSC) is connected respectively on two or more short messaging gateways (GIW).

3, short-message system as claimed in claim 1 is characterized in that: also comprise short message service gateway (SMGW), link to each other with each short message service center (SMSC) respectively.

4, as claim 1 or 2 or 3 described short-message systems, it is characterized in that: be provided with in the described short message service center (SMSC): 1) self-checking unit is used to detect the busy idle condition of this short message service center (SMSC); 2) notifying device is used for notifying short messaging gateway (GIW) or the short message service gateway (SMGW) that links to each other with it with the busy idle condition of this short message service center (SMSC); Be provided with in described short messaging gateway (GIW) and the short message service gateway (SMGW): 1) part flow arrangement is used for being diverted to standby short message service center when certain short message service center (SMSC) shows when busy short message with this short message service center (SMSC).

5, as claim 1 or 2 or 3 described short-message systems, it is characterized in that: described short message service center (SMSC) backup has the configuration data of other short message service centers, can receive the short message that standby short messaging gateway (GIW) is submitted to, and have the authentication functions of standby short messaging gateway (GIW) being submitted to short message.

6, short-message system as claimed in claim 5, it is characterized in that: attaching in the configuration data has short message service center's number, short message service center (SMSC) guarantees that according to the point-to-point authentication and the routing iinformation of the different nodes of short message service center's number administration the main-standby nodes configuration information is independent fully separately.

7, short-message system as claimed in claim 5, it is characterized in that: also comprise configuration management center (CMC), link to each other with each short message service center that backs up mutually (SMSC) respectively, the configuration data of short message service center (SMSC) is by configuration management center (CMC) unified management, make standby short message service center by data sync, preserve with main with the consistent data of short message service center.

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