CN1283116C

CN1283116C - A method for realizing user number change notification in mobile communication system

Info

Publication number: CN1283116C
Application number: CN 03147311
Authority: CN
Inventors: 张鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2003-07-05
Filing date: 2003-07-05
Publication date: 2006-11-01
Anticipated expiration: 2023-07-05
Also published as: CN1568048A

Abstract

The present invention relates to a method for implementing subscriber number change notification in a mobile communication system, wherein the mobile communication system comprises a mobile switching center (MSC) and a home location register (HLR). The method for implementing subscriber number change notification in a mobile communication system comprises the steps that a calling is initiated by a calling subscriber, and a called number is a mobile subscriber number before modification; the called number is received by the MSC, and a position request message is transmitted to the HLR according to the called number; a playing script is constructed by the HLR according to the received position request message, and the playing script is transmitted to the MSC; the number change notification of the subscriber is accomplished in a playing method by the MSC according to the playing script. The number change notification of subscribers can be achieved by the cooperation of the HLR and the MSC in an unintelligent mobile communication system by using the present invention.

Description

Method for realizing user number changing notification in mobile communication system

Technical Field

The invention relates to the field of mobile communication, in particular to a method for realizing user number change notification in a mobile communication system.

Background

The mobile network has been developed to a certain stage, and a concept of a Wireless Intelligent Network (WIN) is introduced, and the WIN provides seamless terminal service, personal mobile service and advanced network service for a user in a mobile environment by introducing the capability of the intelligent network based on a CS2 protocol (bearer independent call control protocol).

The original WIN standard describes the structure of the distributed function plane, a call model, a mobility management model and some advanced network services. Later WIN standards have added some WIN capabilities and services.

TIA (Telecommunications industry Association)/EIA (electronic industry Association)/IS-771 protocol defines basic concept, frame structure, basic call model, trigger mechanism and description of processing detection point of WIN, and provides an operation specification between systems to make wireless user use the capability of intelligent network after roaming; IS-771 also defines the service characteristics and message flow of some services, which include: (1) incoming Call Screening (ICS): blocking or allowing calls for a specified call, or specifying an alternate route, forwarding the call to voicemail or another telephone number or a specific canned notification; (2) calling name display: when the call is continued, the name of the calling subscriber can be displayed to the called subscriber; (3) voice control services: the use of speech recognition technology allows the user to control speech and characteristics by means of voice commands.

The TIA/EIA/IS-826 protocol defines prepaid services. The protocol rules of WIN about prepaid service include service characteristics of prepaid service, messages and parameters required by service flow under various service characteristics, etc. Depending on the needs of the prepaid service, some new trigger points and new information flows are defined to support the prepaid service.

The development of WIN is also the process of the evolution of the second generation mobile system to the third generation mobile system. Currently, through the tracking research of wireless intelligent network, some relevant device specifications, service specifications and test specifications have been made.

For example, an intelligent CDMA (code division multiple access) mobile communication system network is shown in fig. 1, and other wireless intelligent networks are similar thereto. Wherein,

MSC (mobile switching center)/SSP (service switching point) is a core control device of the network, and is a control center for realizing basic functions of user call connection, call control, service realization, and the like. It detects control triggers for WIN services and communicates with an SCP (service control point) to respond to requests from the SCP, allowing service logic in the SCP to affect call processing and modify call and connection processing under control of the SCP. The SSP may provide various dedicated resources and private dedicated resources (the function is optional) required by the WIN service, including: a digital collection device, a tone generator, a recorded announcement, etc.

The HLR is a home location register, which is a central database of the system, and stores the relevant information of all existing mobile subscribers controlled by the HLR, including the basic information (including the relevant information of various services subscribed by the subscriber) when the subscriber opens an account.

The SCP is a service control point, a real-time database and a transaction processing system which provide service control and data functions. It provides intelligent service logic based on SDP and based on information fed back by the SSP. It communicates with the SSP through some of the signaling defined in the IS-41 protocol and the IS-771 protocol. When providing intelligent service for user, SCP sends signaling to SSP to issue service control indication; the SSP specifically executes the content indicated by the operation information in these signalings and sends the execution result or error to the SCP for it to determine the further service trend.

The IP is an intelligent peripheral, provides various special resources and private special resources required by intelligent services, and comprises the following steps: digital collection control, recorded notification, etc. May contain certain logic and processing capabilities to accept information from a user, send information to a user, and manage bearer connections to dedicated resources.

The BSS is a base station subsystem, is directly connected to the mobile station via a wireless interface, and is responsible for wireless transmission and reception and management of wireless resources. And the MSC is connected with the Mobile Switching Center (MSC), so that the communication connection between mobile subscribers or between the mobile subscribers and fixed network subscribers is realized, and system information, user information and the like are transmitted.

The MS is a mobile terminal such as a mobile phone, a car-mounted mobile station, or the like.

In the current network intelligent protocol IS-826, the basic description IS made on the playing of variable voice of intelligent service, the SCP instructs the MSC to play voice through IP, and specific parameters are described in the IS-771 protocol, the protocol implementation flow IS as shown in fig. 2:

SCP sends special resource function indication message (SRFDIR message) to IP, wherein, it contains playback script (EXESCR) parameter to indicate the played changeable recording notice; after receiving the message, the IP can play the recording notification to the mobile terminal through the MSC. The EXESCR parameter specifies a script that needs to execute the special resource function indication, such as playing notification, collecting number, voice recognition, etc., and the specific parameters are described as follows:

the script name specifies the name of the script that needs to execute the special resource function instruction, the script parameter specifies the parameter used by the script that executes the user interaction instruction, both parameters adopt the standard IE (information element) format as shown below, but each byte carries different content:

ip sends a dedicated resource function indication response message (srfdir message) returning the result to the SCP, where the scresult parameter indicates the voice announcement played.

The existing intelligent voice playing scheme needs to be realized through SCP and IP, and if the system does not support intelligence, variable number changing voice notification cannot be played.

Disclosure of Invention

The present invention is directed to overcoming the above-mentioned disadvantages of the prior art, and providing a method for implementing subscriber number change notification in a mobile communication system, which enables a non-intelligent mobile communication system to implement subscriber number change notification as well, the mobile communication system including a Mobile Switching Center (MSC) and a Home Location Register (HLR), the method comprising the steps of:

setting the corresponding relation between the number before and after the mobile user is changed in the home location register;

a calling party initiates a call, and the called number is a mobile subscriber number before being changed;

the mobile switching center receives the called number and sends a location request LOCREQ message to the home location register according to the called number;

the home location register receives the location request message, constructs a playback script according to the corresponding relation and the called number in the location request message, and transmits the playback script to the mobile switching center, wherein the playback script stores the voice information for playing the user number change notice;

and the mobile switching center plays the user number change notification according to the playback script.

The location request message sent by the mobile switching center also contains a parameter indicating whether the mobile communication system supports the user number change notification.

The corresponding relation is set by a signing number changing notification service, and the home location register constructs a playback script according to the corresponding relation and a called number in the location request message, and transmits the playback script to the mobile switching center, wherein the steps of the playback script comprise:

the home location register judges whether the called user changes the user number according to the called number in the received location request message,

if the user number is not changed, then normal connection is made,

if the number of the user is changed, judging whether the called user signs a number change notification service or not,

if no sign changing notification service is signed, replying a position request response message, wherein the position request response message contains a recording notification list parameter which prompts invalid telephone numbers,

if the signed number-changing notification service is signed, a playback script is constructed and transmitted to the mobile switching center.

The step of constructing playback script by the home location register comprises: and the home location register constructs a voice-coded playback script containing the variable recording notification according to the location request message and the number changed by the called user.

The step of transmitting the playback script to the mobile switching center includes: and the home location register transmits the playback script to the mobile switching center through a remote user operation instruction RUIDIR message.

The RUIDIR message includes a canned notification list parameter that specifies a number of canned notifications that should be provided to the user and a digit collection control DGTCC parameter that controls the collection of digits.

The step that the mobile switching center plays the user number changing notification according to the playback script comprises the following steps:

the mobile switching center receives the remote user operation instruction message and replies a remote user operation instruction return result ruidir message to the home location register;

and the home location register receives the result message returned by the remote user operation instruction and replies a location request response logreq message to the mobile switching center.

The step that the mobile switching center receives the remote user operation instruction message and replies a remote user operation instruction return result message to the home location register comprises the following steps:

the mobile switching center plays variable sound according to a sound playing script in the received remote user operation instruction message so as to inform the calling user that the called number is changed;

after the playback is finished, the mobile switching center replies the remote user operation instruction to the home location register and returns a result message.

The home location register receives the return result message of the remote user operation instruction and replies a location request response message to the mobile switching center, and the steps comprise:

if the called user signs to allow the calling user to directly transfer to the changed mobile user number, the position request response message brings back the changed mobile user number, and then normal connection is carried out;

otherwise, the location request response message carries back a parameter indicating the disconnection of the call, and then the call is disconnected.

The invention can realize the notification of the number change of the user by the cooperation of the HLR and the MSC in the non-intelligent mobile communication system.

Drawings

Fig. 1 is a network networking diagram of an intelligent CDMA mobile communication system;

fig. 2 is a flow chart of a prior art wireless intelligent network that instructs a Mobile Switching Center (MSC) to play a variable tone by a Service Control Point (SCP) through an Intelligent Peripheral (IP);

FIG. 3 is a prior art calling signaling flow for a prepaid (PPC) subscriber in a wireless intelligent network;

FIG. 4 is a signaling flow of a prepaid (PPC) subscriber called in a prior art wireless intelligent network;

FIG. 5 is a flow chart of a method of implementing a user re-number notification in a mobile communication system in accordance with the present invention;

fig. 6 is a parameter description of processing capability (transactionability) in the LOCREQ message sent by the MSC in the method for implementing subscriber number change notification in a mobile communication system according to the present invention.

Detailed Description

The invention is described in further detail below with reference to the following figures and embodiments:

in order to make the present invention more understandable to those skilled in the art, a brief description of a call flow in a related art wireless intelligent network will be given first before describing the present invention in detail.

Referring to fig. 3, fig. 3 depicts a calling signaling flow of a prepaid (PPC) subscriber in a prior art wireless intelligent network: the PPC user is used as a calling party to call a PSTN (public telephone network) user, and the calling party is firstly hung up without recording notice before calling.

Wherein, MSC/SSP represents mobile switching center/service switching point; SCP represents service control point; PSTN represents public telephone network users, and the call flow is as follows:

(1) the mobile station initiates a call and the serving MSC receives the called number.

(2) The serving MSC triggers an initial call attempt authentication trigger and sends a message to the SCP associated with this trigger.

(3) The SCP determines that the subscriber has activated the PPC service and that the subscriber's account has a balance, the SCP sends a return result message to the serving MSC indicating that call processing should continue, wherein the parameter indicates that the PPC service is to be performed.

(4) The serving MSC analyzes the called number and prepares to route the call, and the MSC triggers a call routing address available trigger and sends a message to the SCP associated with the trigger.

(5) SCP sends back result message to MSC.

(6) The MSC follows the mobile originated call.

(7) The call connection is successful.

(8) The called party answers the phone.

(9) The serving MSC triggers an initial answer trigger and sends a message to the SCP associated with this trigger, which starts charging for the caller after receiving the message.

(10) The calling party hangs up and the call is ended.

(11) The service MSC triggers the on-hook trigger and sends a message to the SCP related to the trigger, and the SCP stops charging for the calling after receiving the message.

(12) SCP sends hang up response message to service MSC, and releases call.

Referring to fig. 4, fig. 4 illustrates a signaling flow of a prepaid (PPC) subscriber called in a related art wireless intelligent network: the PPC user is called, the terminals between the systems are connected, the called party hangs up first, and there is no recording notice before calling.

Wherein MSCa/SSP represents mobile switching center a/service control point; HLRb denotes home location register b; SCPb represents service control point b; MSCb/VLR represents mobile switching center b/visitor location register, and the call flow is as follows:

(1) the originating MSCa receives a call that includes the address digits, i.e., directory number, of the called mobile station.

(2) The originating MSCa triggers the mobile terminal trigger and sends a message to the HLRb associated with the mobile station to retrieve the list of service items associated with the subscriber.

(3) HLRb sends a return result message to the originating MSCa indicating in the service item list parameters that the relevant trigger (originating terminal, location, called answer, called hang-up, etc.) is configured.

(4) The originating MSCa triggers the initial terminal trigger and sends a message to the SCPb indicated in the service item list parameter, which triggers the initial terminal trigger in the trigger type parameter.

(5) SCPb determines that the user activated the PPC service and the account balance is sufficient, SCPb sends a return result message to the originating MSCa indicating that the PPC service is to be executed.

(6) The originating MSCa triggers the location trigger and sends a message to HLRb indicating in the parameters that the location trigger was triggered.

(7) HLRb determines that call processing should continue and sends a find called route (ROUTREQ) message to MSCb/VIR.

(8) The serving MSCb/VLR assigns a called roaming (TLDN) number and returns to HLRb.

(9) HLRb sends a return result message to the originating MSCa instructing the call to be established to the subscriber.

(10) The originating MSCa prepares to terminate the call, triggers a called routing address available trigger, and sends an analysis information (ANLYZD) message to SCPb associated with the trigger.

(11) The SCPb sends a return analysis message (anlyzd) result to the originating MSCa indicating that the originating MSCa has established a call to the subscriber, and the mobile station answers the call.

(12) The originating MSCa establishes the call.

(13) The call setup was successful.

(14) The called party answers.

(15) The originating MSCa triggers the called answer trigger, sending the called answer message to SCPb associated with this trigger; the SCPb starts charging for the called party after receiving this message.

(16) The called party hangs up, and the conversation between the two parties is finished.

(17) The originating MSCa triggers the disconnect trigger and sends a called hang-up (tdiscont) message to SCPb which stops charging for the called party after receiving the message.

(18) SCPb sends a called hangup return result (tdiscoct) message to the originating MSCa, releasing the call.

The above description of the call flow of the wireless intelligent network is helpful for understanding the present invention, and the following is a detailed description of the present invention:

referring to fig. 5, fig. 5 describes the flow of the method for implementing the user number change notification service in the mobile communication system of the present invention, wherein the called number is the mobile subscriber number of the home zone:

first, a description will be given of the number change notification service. The number-changing notification service is that when the called party telephone number is changed, the exchanger transfers the incoming call to the voice mailbox, the voice mailbox and the exchanger exchange signals to obtain the called number, the system checks the corresponding database to search the new number corresponding to the number, and notifies the calling party in a voice synthesis mode. If the corresponding telephone number is not searched, the telephone change information is prompted.

Similarly, the mobile terminal MS may sign a number change notification service at the HLR. The process of the mobile terminal MS signing the number change notification service in the HLR is the process of setting the corresponding relation between the number before the mobile user is changed and the number after the mobile user is changed in the HLR. When the calling user dials the called mobile user number before changing, the MSC plays the voice notice to the user. According to whether the called user signs a contract to make the calling user directly transfer to the changed called mobile user number, HLR decides whether to continue after playing the voice notice for the calling user, and the content of playing the voice notice is decided by the playback script brought down by the HLR. And after the voice notification is played, if the called party does not sign the call and transfers the call to a new number, the call is disconnected. If signing up, HLR responds message with called new number to calling party through logreq (location request), similar to unconditional forwarding service. The processing flow is as follows:

a. the user initiates a call, and the called number is the mobile user number before changing.

b. The originating MSC analyzes the called number and results in a mobile number. The originating MSC sends a location request message (LOCREQ message) to the HLR according to the called number. The LOCREQ message includes a parameter handling capability parameter (TransactionCapability) indicating whether the system supports the number change notification service. Wherein the parameter transfactioncapability specification is shown in figure 6.

After HLR receives LOCREQ message, it judges if the called user has changed user number, if the number has changed and the called user signs the number change notification service, it constructs playback script (EXESCR), and brings it to MSC through RUIDIR message. The playback script can be flexibly configured, for example, whether a user signs a contract after changing the number or not can inform the service of playing the voice: "your dialed number has changed to 133 XXXXXXXX" or "your dialed number has changed to 133XXXXXXXX, we are switching you for a short time". Since the parameters ANNLIST (Notification List of record parameter) and DGTCC (digital Collection control parameter) are mandatory IEs in the RUIDIR message, these two parameters are also brought to the MSC. The playback script contains the voice coding of the variable sound, and the description of the playback script parameters is as follows:

the DGTCC parameter may contain a prompt voice message allowing the calling subscriber to select whether to connect to a new called number by pressing a button, for example, a voice prompt is given to the subscriber to input an x key to connect to a new number, if the subscriber presses the x key, the result of the number receiving operation is brought to the HLR by the ruidir message, and the HLR brings a new number to the MSC for connection by the logreq message according to the selection result of the calling subscriber.

After receiving RUIDIR, MSC finds that the message has playback script (EXESCR), the priority is higher than ANNLIST, it will decode and play the sound, and after playing the sound, it will reply Ruidir message to HLR.

After receiving the ruidir message, the HLR replies a position request response message (logreq message) to the MSC, if the called user signs a contract and allows the calling user to directly transfer to the new mobile user number after the change, the logreq response message brings back the new called number through a terminal list parameter TERMLIST, and the subsequent flow is the same as the common call; otherwise, the logreq response message carries back the call disconnect parameter ACCDEN, which disconnects the call.

Fig. 6 is a description of a processing capability (transactionability) parameter in a LOCREQ message (location request message) sent by an MSC in the present invention.

The TransactionCapability parameter is specified in protocol detail as follows:

service item List (byte 1, bit A)

Bit:

h G F E D C B A value means

00 this system does not support the service item list parameter

11 this system supports service item list parameters

Busy (busy) (byte 1, bit B)

Bit:

h G F E D C B A value means

0 can find busy tone

1 can not find busy tone

Notification of recording (ANN) (byte 1, bit C)

Bit:

h G F E D C B A value means

0 inability to play recorded notifications

1 Can Play recorded Notification

End user operation (RUI) (byte 1, bit D)

Bit:

h G F E D C B A value means

0 may not

1 can be

SPINI (byte 1, bit E)

Bit:

h G F E D C B A value means

0 does not support

1 support

Multi-terminal (byte 2, bit A-D)

Bit:

h G F E D C B A value means

00000 Multi-terminal with No reception

0 0 0 1 1

To

111115 number of terminals supported by the system

Terminal List (TL) (byte 2, bit E)

Bit:

h G F E D C B A value means

0 does not support

1 support wherein a change number informs the service system that the support capability can use one of the reserved bits.

While the present invention has been described with respect to the embodiments, those skilled in the art will appreciate that there are numerous variations and permutations of the present invention without departing from the spirit of the invention, and it is intended that the appended claims cover such variations and modifications as fall within the true spirit of the invention.

Claims

1. A kind of method that realizes user's number change notice in mobile communication system, described mobile communication system comprises: mobile switching center MSC and home location register HLR, it is characterized in that, described method comprises steps:

Set the corresponding relationship between the number before the change and the number after the change of the mobile subscriber in the home location register;

The calling user initiates a call, and the called number is the mobile user number before the change;

The mobile switching center receives the called number, and sends a location request LOCREQ message to the home location register according to the called number;

The home location register receives the location request message, constructs a play script according to the corresponding relationship and the called number in the location request message, and transmits the play script to the mobile switching center, and the play script The script stores voice information for playing user number change notices;

The mobile switching center plays the user number change notification according to the playing script.

2. The method for notifying subscribers to change numbers in the mobile communication system as claimed in claim 1, wherein the location request message sent by the mobile switching center also contains information indicating whether the mobile communication system supports the subscriber's number. Parameters of number change notification.

3. The method for realizing user number change notification in a mobile communication system as claimed in claim 1, wherein the corresponding relationship is set by signing a number change notification service, and the home location register is based on the corresponding relationship, position The called number in the request message constructs a play script, and the steps of sending the play script to the mobile switching center include:

The home location register determines whether the called user has changed the user number according to the called number in the received location request message,

If the subscriber number has not been changed, proceed with the normal connection,

If the user number has been changed, it is judged whether the called user subscribes to the number change notification service,

If the notification service of number change is not subscribed, then reply the location request response message, the location request response message includes the recording notification list parameter, and the parameter prompts an invalid phone number,

If the number change notification service has been subscribed, an announcement script is constructed, and the announcement script is transmitted to the mobile switching center.

4. as claimed in claim 1 or 3, realize the method for user's number change notification in the mobile communication system, it is characterized in that, the step of described HLR constructing the play script comprises: described HLR according to the location request The message and the changed number of the called user construct a voice-coded playback script containing variable recording notifications.

5. as claimed in claim 1 or 3, realize the method for user's number change notification in the mobile communication system, it is characterized in that, the step that described playback script is sent to described mobile switching center comprises: described home location register passes The remote user operates an instruction RUIDIR message to transmit the playback script to the mobile switching center.

6. the method for user's number change notification in the realization mobile communication system as claimed in claim 5 is characterized in that, comprises recording notification list parameter and digital collection control DGTCC parameter in the described RUIDIR message, and described recording notification list parameter regulation should Multiple recording notifications provided to the user, the number collection control parameters are used to control the number collection.

7. the method for user's number change notification in the realization mobile communication system as claimed in claim 5 is characterized in that, the step of described mobile switching center playing user's number change notification according to the playback script comprises:

The mobile switching center receives the remote user operation instruction message, and replies the remote user operation instruction return result ruidir message to the home location register;

The home location register receives the remote user operation instruction return result message, and replies a location request response locreq message to the mobile switching center.

8. The method for realizing user number change notification in a mobile communication system as claimed in claim 7, wherein said mobile switching center receives said remote user operation instruction message, and replies to said home location register. The steps for the user operation instruction to return the result message include:

The mobile switching center plays a variable tone according to the tone script in the received operation instruction message of the remote user, so as to notify the calling user that the called number has been changed;

After the announcement is finished, the mobile switching center replies the remote user operation instruction return result message to the home location register.

9. The method for realizing subscriber change notification in a mobile communication system as claimed in claim 7, wherein said home location register receives said remote user operation instruction return result message, and replies to said mobile switching center The steps of the location request response message include:

If the called user subscribes to allow the calling user to directly transfer to the changed mobile subscriber number, then bring back the changed mobile subscriber number in the location request response message, and then perform normal connection;

Otherwise, the location request response message returns a parameter indicating that the call is disconnected, and then the call is disconnected.