RU2264051C2 - Method for making a short messages service using ss-7 signaling in mobile intellectual network - Google Patents

Abstract

FIELD: mobile telecommunication systems.

SUBSTANCE: calling mobile station sends request for access/authentication to register of client position, after authentication, mobile station sends short message to appropriate initiating mobile commutation short message center, after receipt of short message in aforementioned center short message is sent to center to mobile commutation center of inter-network interaction, which initiates appropriate stage of service control in accordance to called field of short message number and sends short message to end mobile short message commutation center through inter-network gate of mobile commutation center, and short message is delivered to called client.

EFFECT: higher efficiency.

7 cl, 5 dwg, 3 tbl

Description

FIELD OF THE INVENTION

This invention relates generally to a service of a mobile intelligent network and, in particular, to a method for implementing a short message service (SMS) using signaling in an alarm system (SS) No. 7 in a mobile intelligent network.

State of the art

In recent years, the technology of intelligent networks and mobile communications services have been developing rapidly around the world. Their combination forms a mobile intelligent network, providing a wide variety of intelligent services to numerous mobile subscribers. A mobile smart network is formed by adding an intelligent layer to a mobile communications network. Using the structure and management functions of an intelligent network, various additional mobile network services can be turned into intelligent.

Currently, a simple way to provide intelligent services in a mobile network is to use the mobile network as an access network. Intelligent service requests are collected in tandem at a service switching point (SSP) in a public switched telephone network (PSTN), and the SSP communicates between the mobile network and the intelligent network. Thus, part of the requests for intelligent services can be quickly satisfied. However, not taking into account the limitation of connection signaling, the SSP in the PSTN does not have as many features as a mobile network; application of the method leads not only to the occupation of a certain amount of resources of current subscribers of intelligent services, but also to the limited provision of intelligent services and to the inability to support intelligent short message services in a mobile network.

Therefore, the European Telecommunications Standards Institute (ETSI) proposed a special logic for advanced mobile applications (CAMEL) to solve the problem of the connection between the GSM mobile communication network and the smart network. Using the CAMEL service in a GSM network, a communication provider can establish an intelligent platform for setting and implementing new additional services, which provides subscribers with the same services as the main network in international roaming. However, since there is no protocol and signaling for implementing the application part (CAP) of the logic (CAMEL) for short messages between the short message service center (SMSC) and the intelligent network services control center (SCP), the CAMEL architecture does not support SMS services, which creates inconvenience for a subscriber application.

With this in mind, China patent application CN 01109024.3 proposes a method for providing an intelligent short message service in a mobile intelligent network. According to this method, the transmission of messages between the SMSC and the SCP of the mobile intelligent network is carried out via a transmission control protocol / Internet protocol (TCP / IP). In addition, the authentication of the intelligent short message service and the notification operation of the result of the short message are also performed via TCP / IP. Despite this, to implement the method, you must first install the interface in front of SCP, then using this interface you need to establish a TCP / IP connection between SMSC and SCP. This method is not very convenient in practice.

The implementation of the intelligent network is based on SS No. 7 signaling network and a huge concentrated database. The SS No. 7 signaling network provides a means of communication for connecting between each node in an intelligent network. Therefore, since adding the appropriate signaling is sufficient without taking into account the protocol and signaling conversion between different protocols and without the need for additional software or hardware, it is much simpler and easier to improve the functionality of a mobile intelligent network based on signaling in SS No. 7 compared to using TCP / IP.

SUMMARY OF THE INVENTION

In accordance with this, the main objective of the invention is to provide a method for implementing the short message service using signaling in SS No. 7 in a mobile intelligent network. Using this method, it is possible to simply and flexibly provide a short message function in a mobile intelligent network and make the billing system of the mobile intelligent network more advanced.

Another object of the invention is to provide a method for implementing a short message service using signaling in SS No. 7 in a mobile intelligent network, which can more conveniently provide a smooth transition of the previous mobile intelligent network to a GSM mobile intelligent network without additional network modules and without expanding the bandwidth.

In order to solve the above problem, a method for implementing a short message service using SS No. 7 signaling in a mobile intelligent network at least comprises:

a) a caller submits via a mobile station a request for access / authentication to the Visitor Location Register (VLR);

b) after authentication using VLR, the transmission of a short message from the mobile station to the corresponding initiating mobile switching center of short messages (O_SM_MSC);

c) after receiving the short message in O_SM_MSC, the transmission of the short message from O_SM_MSC to the mobile Internet switching center (IWMSC);

d) initiating the appropriate service control point (SCP) using the IWMSC in accordance with the called short message field, performing the billing process for the short message using the GSM service control function (gsmSCF) and the GSM service switching function (gsmSSF);

f) simultaneously sending a short message from the IWMSC to the Short Message Service Center (SMSC);

f) after receiving the short message in the SMSC, submitting a request for the transmission of the short message to the gateway of the mobile switching center (GMSC);

g) transmitting the SMS discovery start point message to the SCP using the GMSC, then requesting a transmission path from the main area register (HLR);

h) after finding the final mobile short message switching center (T_SM_MSC), sending a short message from the GMSC to T_SM_MSC;

i) after receiving a short message in T_SM_MSC, a route request to the subscriber in the VLR; and

j) after finding the route to the called mobile station, transmitting a short message to the called mobile station from T_SM_MSC.

During the above communication procedure, a Mobile Application Part (MAP) message is used for communication between O_SM_MSC and IWMSC, T_SM_MSC and GMSC, T_SM_MSC and HLR, HLR and GMSC, respectively. CAMEL CAP is used for communication between gsmSCF and gsmSSF. The Remote Short Message Service Module (SMRSE) is used to communicate with each other IWMSC, SMSC and GMSC, respectively.

From the above technical scheme, it can be seen that the method according to the invention improves the CAP signaling and protocols between SMSC and SCP, and the function of initiating the intelligent service during communication between the mobile network and the intelligent network performed by SSP goes to SMSC and is executed in SMSC using this method. Thus, for mobile subscribers in the mobile smart network, not only the smart short message service can be conveniently and flexibly provided, but the billing system of the mobile smart network can also be improved to provide a prepaid short message service. In addition, since all functions are carried out using the SMSC, when the network architecture changes, this applies only to the equipment in the SMSC, without affecting other devices in the network. Since there is no need to add new network modules, the implementation of network organization and bandwidth expansion is very simple and easy.

Brief Description of the Drawings

The figures depict:

figure 1 - architecture of the overlay network short message service (SMS) according to the invention;

2 is a graphical diagram of a call signaling process using a call mode MO according to the invention;

figure 3 is a graphical diagram of the signaling process of a call in case of constant success or permanent failure with the call mode MO according to the invention;

4 is a graphical diagram of a call signaling process using the MT call mode according to the invention;

5 is a graphical diagram of a call signaling process in case of continuous success or permanent failure with the MT call mode according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

The following is a detailed description of the invention with reference to the drawings.

The implementation of the intelligent network is based on the SS No. 7 signaling network and large concentrated databases. Signaling network SS No. 7 provides a means of communication for connecting between nodes of intelligent networks. The standard flow of information between the functional modules of the intelligent network is transmitted using the protocol of the transaction support application part (TSAP) of the SS No. 7 signaling network.

Since the communication of the intelligent network is based on the SS No. 7 signaling network, the improvement of the protocols and signaling of the SS No. 7 signaling network in excess of the original basis, not only preserves its original communication functions, but also creates new communication functions. Currently, in GSM networks, mobile subscribers can receive many amenities from SMS, including many attractive additional services, such as sending and receiving short messages, requesting weather information, flight information, and exchange news via short messages. However, the SS No. 7 signaling network in the previous intelligent network cannot support the intelligent short message service, therefore it is necessary to add and improve signaling and protocols having the ability to support short message communications based on the original SS No. 7 signaling network signaling. Therefore, the method for implementing the intelligent short message service according to the invention consists in adding communication messages corresponding to signaling and SS protocol No. 7, such as information about the request, authentication, and transmission of a short message between the calling MO and the called MT using the mobile switching center (MSC) and SCP, respectively, with the goal of successfully implementing intelligent short message services on a mobile intelligent network without any restrictions. In accordance with the above main idea, a corresponding improvement scheme is proposed in combination with the previous structure of the mobile intelligent network. The special process is as follows.

The invention uses the Overlay Short Message Service (Overlay SMS) mode to implement the scheme. It consists of an overlay mode that provides an overlay network mode for accessing the CAMEL network in the GSM general network, in other words, it is possible to access the common MSC / GMSC for several exchanges with the IP function in order to enable roaming within certain zones of the smart subscriber using this method . In this method, a portion of the resources is allocated to current smart subscribers, and smart services are identified by identifying sections with special numbers. This means that the IWMSC determines which SCP to initiate based on the section number, so that the connection function between the mobile network and the intelligent network and the intelligent service initiation function now moves from the SSP to the IWMSC.

As shown in FIG. 1, which shows the architecture of the SMS overlay network, the SMS overlay network consists mainly of gsmSCF, gsmSSF, the source mobile station, the destination mobile station, O_SM_MSC, T_SM_MSC, a mobile switching center with synthesizing function and HLR. gsmSCF and gsmSSF are connected through the CAP interface. gsmSSF is connected to O_SM_MSC using an external interface. O_SM_MSC, T_SM_MSC and HLR are all connected to a mobile switching center with synthesized functions through the MAP interface. Synthesized function mobile switching center includes at least IWMSC, SMSC and GMSC. Among them, the IWMSC is used to transmit short messages from the center to the MSC. IWMSC, SMSC and GMSC can be implemented as a single network module, providing all the functions of three network modules to reduce the number of equipment and reduce investment. They can also be performed individually to enhance processing ability when there are a large number of subscribers. IWMSC, SMSC and GMSC are connected to each other through the SMRSE interface.

As shown in FIG. 1, the communication procedure in the aforementioned network comprises at least the following steps:

a) the caller through the mobile station submits an access / authentication request to the Visitor Location Register (VLR);

b) after authentication with the VLR, the mobile station transmits a short message to the corresponding O_SM_MSC;

c) after receiving the short message, the O_SM_MSC transmits the short message to the IWMSC;

d) The IWMSC initiates the corresponding SCP in accordance with the called section number in the short message, then gsmSCF and gsmSSF perform the billing process for the short message;

f) at the same time, the IWMSC transmits a short message to the SMSC;

f) upon receipt of the short message, the SMSC submits a request to transmit the short message to the GMSC;

g) The GMSC first transmits the SMS discovery start point message to the SCP, then requests a transmission route from the HLR;

h) after finding T_SM_MSC, the GMSC sends a short message to T_SM_MSC;

i) after receiving the short message, the T_SM_MSC requests a transmission route from the VLR; and

j) after finding the route to the called mobile station, the T_SM_MSC transmits a short message to the called mobile station.

The following is a detailed description of the signaling processing procedure for the architecture of the SMS overlay network with reference to FIG. 2 of FIG. 5. FIG. 2, FIG. 3, FIG. 4 and FIG. 5 respectively show signaling processing procedures at the end of the calling party MO or at the end of the called side MT of the SMS overlay network architecture.

As shown in figure 2, a special processing procedure at the end of the MO overlay SMS network is as follows.

1. First, the mobile station (MS) submits an access request and, optionally, an authentication request to the VLR.

2. After obtaining permission from the VLR, the MS transmits a short message to the MSC.

3. After receiving the short message, the MSC transmits the short message to the IWMSC in the MAP message format. In this case, the IWMSC is responsible for processing short messages sent by mobile stations.

4. After receiving a short message, the IWMSC determines which SCP should be initiated according to the section number, then transmits the initial Short Message Initial Alarm (InitialDPSMS) to the SCP in CAP message format.

5. Upon receipt of the InitialDPSMS message, SCP returns an SMS Connect / Continue message in the CAP message format to send continuous processing instructions to the IWMSC. If there is continuous success or constant failure when the SCP received the InitialDPSMS message sent by the IWMSC, the SCP returns an SMS continuation message to instruct the IWMSC to stop processing.

As shown in FIG. 3, the initiation detection point (TDP) parameter in the InitialDPSMS message indicates continuous success or constant failure; if TDP is O_SMS_Submitted, then it means success; if the TDP is O_SMS_Failure, then this means a failure.

6. If this is a failure, the IWMSC transmits a short message to the called party (SC) in the MAP message format, while the SCP performs the billing process, then ends the SMS processing and informs the mobile station about the reason for the end.

7. After receiving the short message, the called party (SC) transmits the delivery response message to the SMS-IWMSC in the format of the MAP messages.

8. The IWMSC returns a delivery message to the MSC in the format of the MAP messages.

9. MSC returns the delivery message again to the MS.

As shown in figure 4, a special processing procedure at the end of the MT architecture of the SMS overlay network is as follows.

1. SC submits a request to send a message to the SMS-GMSC.

2. SMS-GMSC transmits InitialDPSMS message in CAP message format to SCP to instruct SCP to initiate short message detection points.

3. SCP transmits the SMS Connection / Continuation message in the format of the CAP messages to the SMS-GMSC to instruct further processing. If there is continuous success or constant failure, then after receiving the InitialDPSMS message from the SMS-GMSC, the SCP sends a continue message to the SMS-GMSC to issue an instruction to stop processing.

As shown in FIG. 5, the discovery point initiation (TDP) parameter in the InitialDPSMS message indicates continuous success or constant failure. If the TDP is T_SMS_Submitted, then this means success; if the TDP is T_SMS_Failure, then this means a failure.

4. SMS-GMSC transmits a message requesting the transfer of route information for a short message (sendRoutingInfoForShort Msg) to the HLR in the MAP message format.

5. SMS-GMSC sends a request to send a short message to the center (forwardShortMessage) in the MSC in the format of the MAP messages.

6. The MSC transmits a short message requesting information about the transmission route (sendInfoForMT-SMS) to the VLR in the MAP message format.

7. The MSC transmits a short message to the MS in the MAP message format.

8. The MS returns a delivery message to the MSC in the format of the MAP messages.

9. MSC returns the delivery message to the SMS-GMSC in the format of the MAP messages.

10. SMS-GMSC also returns a delivery message to the HLR and the subscriber in the MAP message format.

In the above signaling flow, the key parameters of the InitialDPSMS message include the calling number, called number, SMSC address, service key, and TDP result. The specific names and descriptions of the InitialDPSMS message are shown in Table 1.

Table 1
Message Composition InitialDPSMS Information Item Name Description Destination Subscriber Number Short Message Assignment Module Number Caller Number ISDN MS Number of Short Message Subscriber Event type Event type such as SMS_Collected_Info IMSI To identify a mobile subscriber MSC Location Information MSC Location Information SGSN Location Information SGSN Location Information Service key Service key for setting service processing logic in SCF Time and time zone GmsSSF / gprsSSF initiation time and resident time zone Includes: - instruction on the type of information Special Information About - ban on copying short message subordination - correct period format TR - status message request - instruction about subscriber header data - response route TP protocol identifier Indicates short message layer protocol TP data coding scheme Indicates the coding scheme of the TP subscriber field data TP validity period Indicates the duration of the validity period or continuous absolute time within the validity period SMSC Address Specifies the SMSC address provided by the MO short message.

InitialDPSMS message, event types are divided into three types according to the type of CAMEL detection point, as shown in table 2.

table 2
Event Type Message Composition CAMEL Detection Point Detection Point Type Description DP SMS_Collected_Info TDP-R Indicates that SMS-CSI has been parsed and the short message sent by the mobile station has been received. DP 0SMSFailure EDP-N, EDP-R Indicates that the transfer from the switching module to the SMSC is unsuccessful. DP 0SMSSubmitted EDP-N, EDP-R Indicates that the transfer from the switching module to the SMSC is successful.

In the above signaling flow, the main parameter of the SMS Request Request message (RequestReportSMSEvent) transmitted from the SCP to the MSC is the SMS event to indicate that the reported event has been requested.

An SMS event additionally includes the event type and output mode specified in Table 3.

Table 3
SMS event composition Information Item Name Description Event type To set the type of requested event Output mode To set the requested event mode

In the above signaling flow, a Connection Message (ConnectSMS) transmitted from SCP to SMS-GMSC can be used to change information about SMSC address and called number, etc. If the SCP transmits a Continue SMS message to the MSC, it means that the SCP is requesting gsmSSF / gprsSSF to continue processing the SMS.

In practice, there is another structure of a mobile intelligent network, i.e. CAMEL Short Message System (CAMEL SMS). CAMEL SMS is used in the CAMEL environment in which CAMEL defines the corresponding network modules, such as SCP, SCE, SSP, etc., and also defines the function of each network module, such as gsmSCF, gsmSRF and gsmSSF, etc. In a CAMEL environment, an intelligent service is initiated using CAMEL signature information. This means that when a subscriber makes a call or receives a call, the switching platform asks if the subscriber's CAMEL signature information (0-CSI) or the subscriber's CAMEL signature information (T-CSI) is available in the subscriber’s information; if so, it is initiated work of the intellectual service CAMEL. The main difference between the CAMEL SMS structure and the SMS overlay structure is the initiating network. In the CAMEL SMS structure, this is MSC / SSP, but the IWMSC queries the HLR to determine which SCP will be initiated.

Claims (7)

1. A method for implementing a short message service using signaling SS No. 7 in a mobile intelligent network, comprising at least: a. Submission by the caller through the mobile station of a request for access / authentication to the Visitor Location Register (VLR); b. after authentication using the Visitor Location Register (VLR), sending a short message from the mobile station to the corresponding initiating mobile short message switching center (O_SM_MSC); from. after receiving a short message in the initiating mobile switching center of short messages (O_SM_MSC), transmitting a short message from the initiating mobile switching center of short messages (O_SM_MSC) to the mobile switching center for interworking (IWMSC); d. initiating the corresponding service control point (SCP) using the mobile Internet switching center (IWMSC) in accordance with the called field of the short message number, performing the billing process for the short message using the GSM service control function (gsmSCF) and the GSM service switching function (gsmSSF ); e. simultaneously transmitting a short message from a mobile switching center for interworking (IWMSC) to a short message service center (SMSC); f. after receiving a short message at the Short Message Service Center (SMSC), submitting a request for sending a short message to the gateway of the mobile switching center (GMSC); g. sending a message about the starting point of SMS detection to the service control point (SCP) using the gateway of the mobile switching center (GMSC), then requesting a transmission route from the main area register (HLR); h. after finding the final mobile short message switching center (T_SM_MSC) sending a short message from the gateway of the mobile switching center (GMSC) to the final mobile short message switching center (T_SM_MSC); i. after receiving a short message in the final mobile short message switching center (T_SM_MSC), a route request to the subscriber in the visitor location register (VLR) and j. after finding the route to the called mobile station, sending a short message to the called mobile station from the final mobile switching center of short messages (T_SM_MSC). 2. The method according to claim 1, characterized in that for communication between the initiating mobile switching center of short messages (O_SM_MSC) and the mobile switching center of interworking (IWMSC), a mobile application part (MAP) message is used. 3. The method according to claim 1, characterized in that for communication between the terminal mobile switching center for short messages (T_SM_MSC) and the gateway of the mobile switching center (GMSC), a mobile application part (MAP) message is used. 4. The method according to claim 1, characterized in that for communication between the terminal mobile switching center of short messages (T_SM_MSC) and the main area register (HLR), a mobile application part (MAP) message is used. 5. The method according to claim 1, characterized in that for communication between the main area register (HLR) and the gateway of the mobile switching center (GMSC), a mobile application part (MAP) message is used. 6. The method according to claim 1, characterized in that for communication between the GSM service control function (gsmSCF) and the GSM service switching function (gsmSSF), a special logic application part (CAP) message for advanced mobile application (CAMEL) is used. 7. The method according to claim 1, characterized in that for communication with each other between the mobile switching center for interworking (IWMSC), the center of the short message service (SMSC) and the gateway of the mobile switching center (GMSC), a module for the remote short message service ( SMRSE).

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