WO2009049462A1 - Method and system for realizing distinctive alerting advice service - Google Patents

Abstract

A method for realizing a distinctive alerting advice service, includes the following steps: A1, an initiating Mobile Switching Center / Visitor Location Register (MSC/VLR) receives an initiating call, and sends a location request to the called mobile station; B1, the initiating MSC/VLR sends the received location information of the called mobile station to a home SCP; C1, the home SCP sends a distinctive alerting code corresponding to the location information of the called mobile station to the initiating MSC/VLR; D1, the initiating MSC/VLR sends a forward call setup request carrying the distinctive alerting code to a called edge MSC/VLR, the called edge MSC/VLR responds and sends an alerting advice carrying the distinctive alerting code to the called mobile station.

Description

TECHNICAL FIELD The present invention relates to a wireless communication system, and more particularly to an Inter-System Page (ISP) for a Mobile Switch Center (MSC) system in a wireless communication system. A method of implementing a Distinctive Alerting Advice service in the process of a Mobile Station (MS). Background Art First, inter-system paging is introduced. 1 is a schematic diagram of a scenario of inter-system paging occurrence according to the application of the present invention, including a mobile switching center/visiting location register (MSC VLR) and a base station subsystem (BSS), which are specifically described as follows: MS is a mobile terminal roaming. In the case where the service overlap areas of the two MSCs, there is a case where the MS switches from the first location area to the second location area, but the location registration has not been initiated in the second location area. At this moment, if the MS is called, the call will be connected to the first MSC, and the first MSC will then page the MS in the first location area, and the result of the MS paging unresponsive will occur. In the above case, the turn-on rate of the first MSC call may decrease. In order to improve the call-through rate of the call, the current general solution is to send a message to the second MSC by the first MSC, and the second MSC pages the MS in the second location area, so that it is possible to obtain the correct paging response of the MS. This solution is called inter-system paging. The inter-system paging can improve the paging success rate of the first MSC, and thus improve the connection rate of the first MSC call. According to the IS-41D protocol, there are three ways to implement inter-system paging: ISPAGE, ISPAGE2, and UNSOLRES. Secondly, the Distinctive Alerting Advice Of Charge (AOC) service is introduced. According to the IS-848 protocol, the service is transmitted between the originating MSC, the serving MSC, and the border MSC, and sends a distinctive ringing service code (ALRTCODE) to the BSS, prompting the MS to ring according to the characteristic ringing tone, thereby prompting the user. The current incoming call will take some specific charging policies. The mobile switching center to which the calling user belongs is the originating MSC VLR, the mobile switching center to which the called user belongs is the serving MSC VLR, and the mobile switching center with the overlapping area between the called user roaming and the serving MSC VLR is the edge MSC/ VLR. Among them, the mobile station carried by the called user is called For the called mobile station, the mobile station is also called a mobile terminal, such as a mobile phone. FIG. 2 is a schematic diagram of a method for implementing a characteristic ringing billing notification service in an ISPAGE mode according to the prior art, including the following steps: Step 201: A mobile terminal initiates a call to an originating MSC/VLR; Step 202, originating an MSC/VLR Sending a mobile terminal request to a home location register (HLR); Step 203: The home HLR sends a mobile terminal request response to the originating MSC; Step 204, the originating MSC VLR sends an initialization terminal to the home service control point (SCP) Step 205: The home SCP sends an initial terminal analysis request response message to the originating MSC/VLR, where the response message carries the called user service key flag. Step 206: The originating MSC/VLR sends a high-level terminal analysis request to the home SCP. Step 207: The home SCP sends an advanced terminal analysis request response to the originating MSC/VLR. The response message carries the called mobile station characteristic ringing code. Step 208: The originating MSC/VLR sends a location request message to the home HLR, where the message carries The called mobile station features a ringing code; Step 209: The home HLR sends a routing request message to the serving MSC VLR, where the message carries the called call The characteristic ringing code is set; Step 210: The serving MSC VLR initiates an inter-system paging ISPAGE request message to the edge MSC/VLR, where the message carries the called mobile station characteristic ringing code, and the edge MSC VLR temporarily stores the user characteristic ringing code; 211, the edge MSC VLR returns an inter-system paging ISPAGE response message, where the message carries the called mobile station temporary roaming number; Step 212, the serving MSC VLR sends a routing request response message to the home HLR, where the message carries the called mobile station temporary roaming number Step 213: The home HLR sends a location request response message to the originating MSC/VLR, message Carrying the called mobile station temporary roaming number; Step 214: The originating MSC VLR sends a called routing address validity analysis request message to the home SCP, where the message carries the called mobile station temporary roaming number; Step 215, the home SCP starts to call The MSC/VLR sends a called routing address validity analysis response message; Step 216, the originating MSC VLR initiates a forward call setup request to the edge MSC VLR; Step 217, the edge MSC VLR acquires the called mobile station characteristic ringing code, and then The home SCP initiates a wireless channel assignment request message, and the message carries the called mobile station's distinctive ringing code. The scheme for implementing the characteristic ringing billing notification in the above ISPAGE process has the following disadvantages: 1. The parameter ALRTCODE is sent by the SCP before the originating MSC VLR knows the exact location of the called MS, when the MS roams in the two MSC VLRs. The SCP cannot know the exact location of the called MS in real time, which may result in the inaccurate ALRTCODE being sent, and the ALRTCODE is temporarily stored in the edge MSC VLR before being sent to the BSS for further delivery. There is no chance to be updated, which will eventually cause the called user to hear an incorrect ringing tone; 2. ALRTCODE is an optional parameter specified by the IS-41D and IS-848 protocols and is requested by the location in the existing implementation. (LOCREQ), routing request (ROUTREQ), and ISPAGE request message are carried, and multiple encoding and decoding operations are required in one call flow, which increases the time overhead of the system and leads to reduced efficiency.

3. In the service implementation process, the ALRTCODE parameter must be temporarily stored in the edge MSC/VLR, which increases the space overhead of the system, resulting in reduced efficiency. SUMMARY OF THE INVENTION The main object of the present invention is to solve the problems in the prior art, and to provide a method and system for implementing a distinctive ringing notification service, which can accurately transmit a characteristic vibration to a user according to the location information of the called user or the called mobile station. Bell code, and can reduce the overhead of system services in time and space. To achieve the above objective, the present invention adopts the following technical solutions: A method for implementing a distinctive ringing notification service, comprising the following steps: N2008/000426

 4

Al, the originating call MSC VLR receives the originating call, and issues a location request to the called mobile station;

Bl, the initial call MSC/VLR sends the acquired location information of the called mobile station to the home

SCP;

Cl, the home SCP sends a distinctive ringing code corresponding to the location information of the called mobile station to the originating MSC/VLR;

D1, the originating MSC/VLR sends a forward call setup request carrying the distinctive ringing code to the called edge MSC/VLR, and the called edge MSC VLR responds and sends a ringing notification carrying the distinctive ringing code to the called mobile station. Preferably, in step A1, the following steps are included after receiving the originating call and before issuing the location request for the called mobile station:

Al l, the originating call MSC VLR sends a mobile terminal request carrying the called subscriber number to the called home HLR, and the home HLR returns the corresponding trigger and the address information of the home SCP;

A12. The originating call MSC/VLR sends an initial terminal analysis request to the called home SCP, and the called home SCP returns an initialization terminal analysis request response carrying the called user service key identifier. Step B1 further includes the following substeps:

B l 1. The originating MSC VLR sends a location request to the called home HLR, and the called home HLR responds to the location request to send a routing request to the called service MSC/VLR, and the called service MSC/VLR responds to the routing request to the called edge MSC/ The VLR initiates an inter-system paging request. B12. The called edge MSC/VLR returns an inter-system response message carrying the location information of the called mobile station, and the called service MSC VLR returns the location information of the called mobile station to the called home HLR. Routing request response message, the called home HLR returns a location request response message carrying the location information of the called mobile station to the originating MSC/VLR;

B13. The originating MSC/VLR sends a called routing address validity analysis request carrying the location information of the called mobile station to the home SCP. In step C1, the home SCP sends a distinctive ringing code to the originating MSC/VLR by returning the called routing address validity analysis request response message carrying the distinctive ringing code. The called mobile station location information is the called mobile station temporary roaming number. The forward call setup request is sent with interoffice call signaling. In step D1, the characteristic ringing code is sent as follows: The called edge MSC VLR sends a wireless channel assignment request message carrying the distinctive ringing code to the called base station subsystem; the called base station subsystem sends the called mobile station to the called mobile station The called ringing notification message carrying the distinctive ringing code. To achieve the above object, the present invention also adopts the following technical solutions: A system for implementing a distinctive ringing notification service, including an originating MSC/VLR, a home SCP, and a called edge MSC VLR, the originating MSC VLR for receiving an originating call Sending a location request to the called mobile station, and transmitting the acquired location information of the called mobile station to the home SCP; the home SCP sends a distinctive ringing code corresponding to the location information of the called mobile station to the initial call MSC/VLR; The originating MSC VLR sends a forward call setup request carrying a distinctive ringing code to the called edge MSC VLR, and the called edge MSC/VLR responds and sends a ringing notification carrying the distinctive ringing code to the called party. Mobile station. The system of the above-mentioned time-limited characteristic ringing notification service further includes a called home HLR and a called service MSC VLR, wherein the called home HLR returns a mobile terminal request response when receiving the mobile terminal request sent by the originating MSC/VLR, and is called The home HLR sends a routing request to the called serving MSC/VLR upon receiving the location request sent by the originating MSC VLR, and the called serving MSC VLR responds to the routing request and initiates an inter-system paging request to the called edge MSC/VLR. The called mobile station location information is the called mobile station temporary roaming number. The beneficial effects of the present invention compared to the prior art are:

1. In the present invention, the home SCP does not send the characteristic ringing code to the originating MSC VLR through the response message of the advanced terminal analysis request, but acquires the called party in the location request response message returned by the originating MSC/VLR from the HLR. After transmitting the location information of the mobile station and transmitting the location information of the called mobile station to the home SCP, the home SCP sends the characteristic ringing code corresponding to the location information of the called mobile station to the location information of the called mobile station. Start MSC/VLR. In this way, the characteristic ringing code received by the user is an accurate characteristic ringing code corresponding to its exact location, which overcomes the prior art SCP sending a distinctive ringing code before knowing the exact location of the called MS. , and the resulting ALRTCODE is not accurate.

2. In the present invention, the location, routing, and ISPAGE messages are no longer required to carry the characteristic ringing code parameters, thereby avoiding multiple encoding and decoding operations in one call flow, and reducing the system time. The overhead.

3. In the present invention, the edge MSC VLR obtains the characteristic ringing code from the forward call setup request sent by the originating MSC after the originating MSC obtains the accurate characteristic ringing code, and the edge MSC VLR does not need to be temporarily stored. The distinctive ringing code saves the overhead of the system space. 4. The invention is simple to implement, and the requirements for system transformation are not affected, and the original functions and processes of the system are not affected. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a scenario of inter-system paging occurrence according to the application of the present invention; FIG. 2 is a flow chart of a characteristic ringing charging notification service in the ISPAGE mode of the prior art; FIG. 3 is an embodiment of the present invention. Characteristic ringing billing notification service flow chart in ISPAGE mode. DETAILED DESCRIPTION In one embodiment, the home SCP avoids sending a distinctive ringing code to the originating MSC VLR by using a response message of an Advanced Termination analysis request, but instead: first sends the originating MSC VLR to the home SCP. The Called Routing Address Available Anlyzd (REQ) sends the location information (preferably a temporary roaming number) of the called mobile station obtained from the location request response message returned by the HLR to the home SCP; After the called mobile station's temporary roaming number accurately knows the location information of the called mobile station, in the returned called route validity analysis request response message (Called Routing Address Available Anlyzd), the location information corresponding to the called mobile station will be The distinctive ringing code is sent to the originating MSC. According to the idea, the present invention completes the function of accurately realizing the ringing service of the called MS in the process of paging between mobile communication systems. Referring to FIG. 3, the MS (Mobile Station) is a mobile station, preferably a mobile terminal. In order to be able to implement the distinctive ringing service, the MS should have the ALRTCODE parameter identified and The ALRTCODE parameter indicates the function of ringing; the BSS is the base station subsystem, in order to realize the characteristic ringing service, the BSS is required to support the function of identifying the ALRTCODE parameter and passing the ALRTCODE parameter to the MS; the mobile communication core network includes the MSC and the HLR, in order to To implement the distinctive ringing service under inter-system paging, the MSC and the HLR must be able to implement inter-system paging services according to the implementation of the three inter-system paging described in IS-41D.

The SCP (Service Control Point) is the service control point. In order to implement the distinctive ringing service, the SCP should have the called MS location information associated with the temporary roaming number TLDN to obtain the characteristic ringing code parameters of the called MS, and can be The characteristic ringing code parameter called MS is filled in the ALRTCODE parameter and sent to the MSC. The following is an example of a special ringing charging notification service application in the ISPAGE mode of paging between CDMA mobile communication systems. The specific service flow is as follows: Step 301: The calling mobile station MS initiates a call to the calling base station subsystem BSS; Step 302: The calling base station subsystem BSS initiates a call to the calling user to initiate the call to the MSC/VLR. Step 303: The calling originating call MSC/VLR sends a mobile terminal request carrying the called user number to the called home HLR. Step 304 The called home HLR returns the address information of the corresponding trigger and the home SCP to the calling user originating MSC VLR; Step 305, the calling originating call MSC VLR sends an initialization terminal analysis request to the service control point SCP (ie, the home SCP), and initializes The purpose of the terminal analysis request is to request the SCP to authenticate the identity of the called user and confirm the legitimacy of the service. Step 306, the service control point SCP returns an initialization terminal analysis request response message to the calling originating MSC VLR, in the response message. Carrying the called user service key flag, and the user service key identifier indicates the smart service successfully triggered by the current user in the current call; Step 307, the calling party starts MSC VLR HLR sends called side home location request message; Step 308, the called home HLR in response to the location request message, / VLR sends a routing request message to the MSC serving the called party; Step 309: The called service MSC VLR sends an inter-system paging message to the called edge MSC/VLR in response to the routing request message. Step 310, the called edge MSC VLR returns an inter-system paging response message to the called serving MSC/VLR. The message carries the called mobile station temporary roaming number; Step 31: The called service MSC VLR sends a routing request response message to the called HLR, where the message carries the called mobile station temporary roaming number; Step 312, the called HLR Returning a location request response message to the calling originating MSC VLR, where the message carries the called mobile station temporary roaming number; Step 313, the calling originating MSC/VLR sends a called routing address validity analysis request message to the service control point SCP. The message carries the called mobile station temporary roaming number; Step 314, the service control point SCP obtains the exact location information of the called mobile station according to the temporary roaming number of the called mobile station, and returns the called party to the calling user to call the MSC VLR. The routing address validity analysis response message carries the called mobile station characteristic ringing code; step 315, the calling originating call MSC/VLR sends the forward direction to the called edge MSC/VLR Establishing a request message, the message carrying the called mobile station characteristic ringing code; Step 316, the called edge MSC VLR sends a wireless channel assignment request message to the called BSS, where the message carries the called mobile station characteristic ringing code; Step 317 The called BSS sends a called ringing notification message to the called mobile station MS, and the message carries the called mobile station's characteristic ringing code, thereby realizing the characteristic ringing of the called mobile station. In this embodiment, the location information of the called mobile station is obtained by the originating call MSC VLR returning the location request response message from the HLR, and after the called routing address validity analysis request message is sent to the home SCP, the home SCP moves according to the called party. The location information of the station transmits a characteristic ringing code corresponding to the location information of the called mobile station to the originating MSC VLR through the response message of the called routing address validity analysis request. In this way, the characteristic ringing code received by the user is an accurate characteristic ringing code corresponding to its exact location, thereby overcoming the existing ISPAGE mode inter-system paging process to implement the characteristic ringing billing notification service. Disadvantages of the implementation, by adopting a method of supporting dynamic update and low space-time overhead, the characteristic ringing notification service is implemented in the inter-system paging process, which can meet the characteristic ringing process correctly and efficiently in the inter-system paging process. The billing notification service needs. At the same time, the invention also has the advantage of simple implementation, and the modification of the system by implementing the invention The demand is very low, and it does not affect the original functions and processes of the system, which is quite convenient. The above is a further detailed description of the present invention in conjunction with the specific preferred embodiments. The specific implementation of the present invention is not limited to the description. For example, the present invention can also be applied to other distinctive ringing notification services other than the charging notification. For the four general practitioners of the present invention, a number of simple deductions or substitutions may be made without departing from the inventive concept, and should be considered as belonging to the scope of the present invention. The above is only the embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention by those skilled in the art. Any modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

Claims

Claim A method for implementing a distinctive ringing notification service, characterized in that it comprises the following steps:  Al, the originating mobile switching center/visit location register receives the originating call, and issues a location request to the called mobile station;  Bl, the initial call mobile switching center / visit location register sends the obtained location information of the called mobile station to the home service control point;  C1. The home service control point sends a distinctive ringing code corresponding to the location information of the called mobile station to the originating mobile switching center/visiting location register;  D1. The originating mobile switching center/visiting location register sends a forward call setup request carrying a distinctive ringing code to the called edge mobile switching center/visiting location register, and the called edge mobile switching center/visiting location register responds and carries A ringing notification of the distinctive ringing code is sent to the called mobile station. 2. The method for implementing a distinctive ringing notification service according to claim 1, wherein in step A1, after receiving the originating call and before issuing the location request for the called mobile station, the following steps are further included:  A11. The originating mobile switching center/visiting location register sends a mobile terminal request carrying the called subscriber number to the called home location register, and the home location register returns the address information of the corresponding trigger and the home service control point;  A12. The originating mobile switching center/visiting location register sends an initial terminal analysis request to the called home service control point, and the called home service control point returns an initial terminal analysis request response carrying the called user service key. The method for implementing a distinctive ringing notification service according to claim 1 or 2, wherein the step B1 comprises the following sub-steps: Bl l, the originating mobile switching center/visit location register sends a location request to the called home location register, and the called home location register responds to the location request to send a routing request to the called service mobile switching center/visiting location register, the called service mobile switching The central/visit location register initiates an intersystem paging request to the called edge mobile switching center/visit location register in response to the routing request; B12. The called edge mobile switching center/visit location register returns an inter-system response message carrying the location information of the called mobile station, and the called service mobile switching center/visit location register returns to the called home location register to carry the called mobile station. a routing request response message of the location information, the called home location register returns a location request response message carrying the location information of the called mobile station to the originating mobile switching center/visiting location register;  B13. The originating mobile switching center/visit location register sends a called routing address validity analysis request carrying the location information of the called mobile station to the home service control point. The method for implementing a distinctive ringing notification service according to claim 3, wherein in step C1, the home service control point returns a validity analysis request response message by returning a called routing address carrying a distinctive ringing code. A distinctive ringing code is sent to the originating mobile switching center/visit location register. The method for implementing a distinctive ringing notification service according to claim 4, wherein the called mobile station location information is a called mobile station temporary roaming number. 6. The method of implementing a distinctive ringing notification service according to claim 5, wherein the forward call setup request is sent by inter-office call signaling. The method for implementing the distinctive ringing notification service according to claim 6, wherein in step D1, the characteristic ringing code is sent in the following manner: the called edge mobile switching center/visiting location register to the called base station The subsystem sends a wireless channel assignment request message carrying a distinctive ringing code; the called base station subsystem sends a called ringing notification message carrying the distinctive ringing code to the called mobile station. 8. A system for implementing a distinctive ringing notification service, comprising: an originating mobile switching center/visiting location register, a home service control point, and a called edge mobile switching center/visiting location register, wherein  The originating mobile switching center/visiting location register receives the originating call, issues a location request to the called mobile station, and transmits the obtained location information of the called mobile station to the home service control point; The home service control point sends a characteristic ringing code corresponding to the location information of the called mobile station to the originating mobile switching center/visiting location register; The originating mobile switching center/visit location register sends a forward call setup request carrying a distinctive ringing code to the called edge mobile switching center/visiting location register, and the called edge mobile switching center/visiting location register response and carrying the characteristic vibration The ringing notification of the bell code is sent to the called mobile station. 9. The system for implementing a distinctive ringing notification service according to claim 8, further comprising: a called home location register and a called service mobile switching center/visiting location register, wherein the called home location register is receiving Returning to the mobile terminal request response when requested by the mobile terminal sent by the originating mobile switching center/visiting location register, the called home location register moves to the called service when receiving the location request sent by the originating mobile switching center/visiting location register The central/visit location register sends a routing request, and the called service mobile switching center/visit location register responds to the routing request and initiates an intersystem paging request to the called edge mobile switching center/visit location register. 10. The system for implementing a distinctive ringing notification service according to claim 8 or 9, wherein the called mobile station location information is a called mobile station temporary roaming number.