CN100479612C - Voice communication method and apparatus thereof - Google Patents

Abstract

The invention discloses a voice communication method, comprising: a base station controller receiving a voice call initiated by a first mobile station; when the signaling link between the base station controller and a mobile switching center is interrupted The base station controller establishes voice communication between the first mobile station and the second mobile station according to the called user telephone number information of the second mobile station and the recorded user information of the mobile station. The invention also discloses a device for voice communication, which is a base station controller, and the base station controller includes a user information processing module, a transceiver module and a call establishment module. The invention achieves the purpose that the calling and called mobile stations under the same base station controller can still perform voice communication even when the signaling link between the base station controller and the mobile switching center is interrupted, which greatly improves user experience and satisfaction.

Description

Method and device for voice communication

technical field

The invention relates to the technical field of mobile communication, in particular to a method and a device for communicating with both parties when the signaling link between a base station controller and a mobile switching center is interrupted.

Background technique

CDMA (Code Division Multiple Access, code division multiple access) 2000 is the wireless access technology of the third generation of mobile communication, and the CDMA2000 standardization organization is responsible for formulating the standard. Enhanced, it can support circuit domain services and packet domain services at the same time, as shown in Figure 1, where the mobile switching center/visitor location register and home location register constitute the circuit domain, which can provide traditional circuit domain services, such as voice services. The packet control function part and packet data service nodes constitute a packet domain, which can provide packet data services, such as accessing the Internet.

In the prior art, when the calling mobile station makes a voice call, it is judged by the mobile switching center. If the calling and called mobile stations are under the same base station controller, the mobile switching center notifies the base station controller to start the local switching feature. The voice payloads of the communication parties are directly transmitted to the base station controller instead of being transmitted from the base station controller to the mobile switching center and then switched back to the base station controller.

The disadvantage of the prior art is that it is still necessary to rely on the mobile center to determine whether the communication parties are under the same base station controller. Once the signaling link between the base station controller and the mobile switching center is interrupted due to transmission failure or other reasons, even if the communication The two parties are located under the same base station controller, and voice communication cannot be performed.

Contents of the invention

The problem to be solved by the present invention is to provide a method and device for local voice communication. When the signaling link between the base station controller and the mobile switching center is interrupted, if the calling and called mobile stations are located under the same base station controller, the communication can still be performed. voice communication.

In order to achieve the above object, the technical solution of the embodiment of the present invention proposes a method for voice communication, including the following steps:

the base station controller receives a voice call, the voice call being initiated by the first mobile station;

When the signaling link between the base station controller and the mobile switching center is interrupted, the base station controller establishes a first Voice communication between a mobile station and a second mobile station.

In order to achieve the above object, the technical solution of the embodiment of the present invention proposes a voice communication device, the voice communication device is a base station controller, the base station controller includes a user information processing module, and communicates with the user information processing module A call establishment module connected to the module, and a transceiver module connected to the call establishment module;

The user information processing module is configured to record user information of mobile stations within the coverage of the base station controller;

The transceiver module is used to receive the call signal of the mobile station and send the call signal to the mobile station;

The call establishment module is used to determine whether the signaling link between the base station controller and the mobile switching center is interrupted after the transceiver module receives the call signal from the mobile station, and when interrupted, query Whether the user information of the called mobile station exists in the user information processing module, if it is judged that the user information exists, the voice communication of the calling and called mobile station is established according to the user telephone number information of the called mobile station.

The technical solution of the embodiment of the present invention achieves the purpose of voice communication even if the signaling link between the base station controller and the mobile switching center is interrupted if the calling and called mobile stations are located under the same base station controller. Get rid of the dependence on the mobile switching center, greatly improve the user experience and satisfaction.

Description of drawings

Fig. 1 is a schematic diagram of a CDMA network structure in the prior art;

Fig. 2 is a schematic structural diagram of a base station controller for voice communication according to the present invention;

FIG. 3 is a flow chart of an embodiment of the voice communication method of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the present invention is described in further detail:

A structure diagram of a base station controller for voice communication as shown in FIG. 2 is mainly composed of a base station controller 1, and also includes the connection relationship between the base station controller 1, a mobile switching center 2 and at least one mobile station. The invention will now be described by taking mobile station 4 as the mobile station performing registration, mobile station 3 as the calling mobile station, and mobile station m as the called mobile station as an example. Base station controller 1 further comprises user information processing module 11, call establishment module 12 and simple billing module 13, and transceiver module 14, and call establishment module 12 is connected with user information processing module 11, simple billing module 13 and transceiver module 14 respectively . The user information processing module 11 is used for recording the user information of the mobile station within the coverage of the base station controller 1; the transceiver module 14 is used for receiving the call signal of the mobile station and sending a call signal to the mobile station; the call establishment module 12 is used for After the transceiver module 14 receives the calling signal of the mobile station, it is judged whether the signaling link between the base station controller 1 and the mobile switching center 2 is interrupted, and when interrupted, according to the subscriber telephone number of the called mobile station m The user information of the mobile station recorded by information and user information processing module 11 establishes the voice communication between calling mobile station 3 and called mobile station m; simple billing module 13 is used to generate calling mobile station 3 and called mobile station m's simple billing records for voice communications.

Now, the mobile station 4 is used as the mobile station performing registration, and the process of registering information in the present invention will be described.

The registration information of the mobile station includes the mobile station's international mobile subscriber identity, current location area identity, paging slot cycle index, electronic serial number, mobile station protocol version and mobile station capability information, etc.

The user information processing module 11 includes a registration processing sub-module 111 and a user information processing sub-module 112 , and the registration processing sub-module 111 is connected to the user information processing sub-module 112 . The registration processing sub-module 111 is used for processing the registration process of the mobile station 4 .

When the mobile station 4 initiates a non-shutdown registration process, the base station controller obtains the international mobile subscriber identity and the current location area identity of the mobile station 4, then communicates with the mobile switching center 2 to obtain the user telephone number information of the mobile station 4; The information processing sub-module 112, according to the user telephone number information and the international mobile subscriber identity of the mobile station 4, judges the international mobile subscriber identity, the current location area identity, the paging slot cycle index and the electronic serial number of the mobile station corresponding to the user telephone number Wait for whether the user information exists, if the user information of the mobile station 4 exists in the base station controller 1, then update the current location area identification of the mobile station 4 in the base station controller; if the user information of the mobile station 4 does not exist in the base station controller 1 , the user information of the mobile station 4 is recorded.

When the mobile station 4 initiates shutdown registration or does not perform registration within a specified time, the user information of the mobile station 4 in the base station controller 1 is deleted.

Now take mobile station 3 as the calling mobile station and mobile station m as the called mobile station as an example to illustrate the process of completing the local communication in the present invention when the signaling link between the base station controller and the mobile switching center is interrupted . The call establishment module 12 includes a judgment sub-module 121 , a query sub-module 122 , a call sub-module 123 and a paging response sub-module 124 , and the query sub-module 122 is connected to the judgment sub-module 121 and the call sub-module 123 respectively. Judgment sub-module 121 is used to judge whether the signaling link between base station controller 1 and mobile switching center 2 is interrupted; Inquiry sub-module 122 is used to query called mobile station m according to the subscriber telephone number information of called mobile station m Whether the user information of the mobile station exists in the user information of the mobile station recorded by the base station controller 1, the user information of the called mobile station m includes the corresponding relationship between the user telephone number and the paging slot cycle index; When the signaling link between the controller 1 and the mobile switching center 2 is interrupted, and the user information of the called mobile station m exists in the user information of the mobile station recorded by the base station controller 1, according to the international The mobile user ID constructs a paging message, which is sent at the time determined by the paging slot cycle index of the called mobile station m, paging the called mobile station m, and establishing the voice communication between the calling mobile station 3 and the called mobile station m ; The paging response submodule 124 is used for when the signaling link between the base station controller 1 and the mobile switching center 2 is interrupted, and before the end of the voice communication, if the signal between the base station controller 1 and the mobile switching center 2 To restore the link, discard the paging request message sent by the mobile switching center 2 to the base station controller 1 or return a paging response message to the mobile switching center 2, indicating that the called mobile station 3 is busy at this moment.

The mobile switching center 2 includes a final billing module 21 and a registration processing module 22 . The registration processing module 22 is used to process the registration process of the mobile station 4, communicates with the base station controller 1, and sends the user telephone number information of the mobile station 4 to the base station controller 1; When the signaling link with the mobile switching center 2 is restored, the final billing record of the voice communication is generated according to the simple billing record generated by the simple billing module 13 .

When the device base station controller 2 for voice communication shown in FIG. 2 is used, the flow of an embodiment of a voice communication method of the present invention is shown in FIG. 3 , including the following steps:

Step S101, the base station controller 1 records the user information of the mobile station within its coverage, and the step S101 further includes the following steps:

Step S101A, the mobile station 4 within the coverage of the base station controller 1 initiates a non-shutdown registration process, and sends a registration message to the base station controller 1, and the registration message includes the international mobile subscriber identity of the mobile station 4;

The registration processing submodule 111 of the base station controller 1 receives the registration message, and queries the current location area identification of the mobile station 4 from the cell that receives the registration message;

The registration processing submodule 111 sends the location update request information carrying the international mobile subscriber identity of the mobile station 4 to the mobile switching center 2, and the registration processing module 22 of the mobile switching center 2 receives the location update request information, and according to the international mobile subscriber identity of the mobile station 4 Identification, return the location update acceptance information carrying the user telephone number information of the mobile station 4 to the registration processing submodule 111;

The user information processing sub-module 112 judges whether the user information of the mobile station 4 exists in the base station controller 1 according to the user telephone number information and the international mobile subscriber identity of the mobile station 4 obtained by the registration processing sub-module 111;

When the user information of the mobile station 4 exists in the base station controller 1, the user information processing submodule 112 updates the current location area identification of the mobile station 4;

When the user information of the mobile station 4 does not exist in the base station controller 1, the user information processing submodule 112 records the user information of the mobile station 4;

The user information processing sub-module 112 returns a registration acceptance message to the mobile station 4 .

Step S101B, the mobile station 4 within the coverage of the base station controller 1 initiates a shutdown registration process, and sends a registration message to the base station controller 1, the registration message includes the international mobile subscriber identity of the mobile station 4;

The registration processing submodule 111 of the base station controller 1 receives the registration message, and queries the current location area identification of the mobile station 4 from the cell that receives the registration message;

The registration processing submodule 111 sends the location update request information carrying the international mobile subscriber identity of the mobile station 4 to the mobile switching center 2, and the registration processing module 22 of the mobile switching center 2 receives the location update request information, and according to the international mobile subscriber identity of the mobile station 4 Identification, return the location update acceptance information carrying the user telephone number information of the mobile station 4 to the registration processing submodule 111;

The user information processing sub-module 112 judges whether the user information of the mobile station 4 exists in the base station controller 1 according to the user telephone number information and the international mobile subscriber identity of the mobile station 4 obtained by the registration processing sub-module 111;

When the user information of the mobile station 4 exists in the base station controller 1, the user information processing submodule 112 deletes the user information of the mobile station 4;

The user information processing sub-module 112 returns a registration acceptance message to the mobile station 4 .

Step S101C, if the registration processing sub-module 111 of the base station controller 1 does not receive the registration message of the mobile station 4 within the specified time, the registration processing sub-module 111 according to the user telephone number information and the international mobile subscriber identity of the mobile station 4, The user information of the mobile station 4 is deleted.

The user information of the mobile station includes the corresponding relationship between the user telephone number of the mobile station and the international mobile user identifier, the current location area identifier and the paging slot cycle index, and may also include the user telephone number of the mobile station and the electronic serial number, and the protocol of the mobile station. Correspondence between version and mobile station capability information.

In step S102, the calling mobile station 3 initiates a voice call, and sends the user telephone number information of the called mobile station m to the base station controller 1. Step S102 further includes the following steps:

The calling mobile station 3 initiates a voice call, and sends an initial call message to the transceiver module 14 of the base station controller 1. The initial call message includes the user's telephone number information of the called mobile station m, and the transceiver module 14 transmits the initial call message after receiving the initial call message. Pass to call establishment module 12.

Step S103, when the signaling link between the base station controller 1 and the mobile switching center 2 is interrupted, the base station controller 1 according to the subscriber telephone number information of the called mobile station m and the subscriber information of the mobile station recorded by the base station controller 1 , establish the voice communication of calling mobile station 3 and called mobile station m, step S103 further comprises the following steps:

The judging sub-module 121 of the base station controller 1 judges whether the signaling link between the base station controller 1 and the mobile switching center 2 is interrupted;

When the signaling link between the base station controller 1 and the mobile switching center 2 was interrupted, the query submodule 122 of the base station controller 1 searched the mobile station recorded in the base station controller 1 according to the subscriber telephone number information of the called mobile station m. Query the user information of the called mobile station m in the user information of the called mobile station m, the user information of the called mobile station m includes the corresponding relationship between the user telephone number and the paging slot cycle index;

The call sub-module 123 of the base station controller 1 establishes an air interface traffic channel for the calling mobile station 3;

If the inquiry submodule 122 does not inquire about the user information of the called mobile station m in the user information of the mobile station recorded by the base station controller 1, then the call submodule 123 plays a prompt tone that the user cannot be connected temporarily to the calling mobile station 3 ;

If the query submodule 122 inquires the user information of the called mobile station m in the user information of the mobile station recorded by the base station controller 1, then the calling submodule 123 judges the state of the called mobile station m;

If the state of the called mobile station m is that the user is busy, the calling submodule 123 plays a busy tone to the calling mobile station 3;

If the called mobile station m is free, the paging submodule 123 constructs a paging message according to the international mobile subscriber identity of the called mobile station m, and sends it in the current location area of the called mobile station m, and the sending time is determined by the called mobile station m's Paging slot cycle index determination;

The called mobile station m returns a paging response message, and the calling submodule 123 receives the paging response message;

The call submodule 123 sets up an air interface traffic channel for the called mobile station m, and sets the state of the called mobile station m as user busy;

The calling submodule 123 plays the ring back tone to the calling mobile station 3;

The called mobile station m rings;

The called mobile station m answers the call and sends a connection command message to the base station controller 1;

The call submodule 123 of the base station controller 1 responds to the base station confirmation command message;

The call sub-module 123 of the base station controller 1 connects the voice communication between the calling mobile station 3 and the called mobile station m, and the call enters a talking state.

Step S103 also includes the following steps:

When the signaling link between the base station controller 1 and the mobile switching center 2 is interrupted, and before the voice communication between the calling mobile station 3 and the called mobile station m ends, if the communication between the base station controller 1 and the mobile switching center 2 The signaling link between is recovered, and the mobile switching center 2 sends a paging request message to the base station controller 1, and the paging response submodule 124 of the base station controller 1 discards the paging request message or returns a paging message to the mobile switching center 2. A response message indicating that the called mobile station 3 is busy at the moment.

The voice communication performed when the signaling link between the base station controller 1 and the mobile switching center 2 is interrupted in step S103 does not support hard handover between the base station controllers, and the hard handover in the base station controller 1 is completely different from the existing process. The same, except that the message that the handover has been executed is not reported to the mobile switching center 2 after the handover is completed.

Step S104, charging for the voice communication in step S103, step S104 further includes the following steps:

The simple billing module 13 of the base station controller 1 generates the simple billing record of the voice communication in step S103, including but not limited to the international mobile subscriber identity of the calling mobile station 3, the international mobile subscriber identity of the called mobile station m, and service options , call start time and call duration;

When the signaling link between the base station controller 1 and the mobile switching center 2 is recovered, the base station controller 1 passes the interface between the base station controller 1 and the mobile switching center 2, and the simple billing generated by the simple billing module 13 The record is sent to the mobile switching center 2;

The final charging module 21 of the mobile switching center 2 generates a final charging record according to the received simple charging record.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (15)

1, a kind of method of voice communication is characterized in that, may further comprise the steps:

Base station controller receives audio call, and described audio call is by first Mobile Origination;

When the signaling link between described base station controller and the mobile switching centre interrupts, described base station controller is set up the voice communication between first travelling carriage and second travelling carriage according to the user profile of the travelling carriage of the subscriber directory number information of called second travelling carriage and record.

2, the method for voice communication according to claim 1 is characterized in that, before base station controller receives audio call, also comprises the user profile of travelling carriage in its coverage of described base station controller records.

3, as the method for voice communication as described in the claim 2, it is characterized in that the user profile of the travelling carriage of described base station controller records comprises the subscriber directory number of travelling carriage in the described base station controller coverage and the corresponding relation of present position-region sign and paging time-slot periodic key.

As the method for voice communication as described in the claim 2, it is characterized in that 4, the user profile of travelling carriage in its coverage of described base station controller records further may further comprise the steps:

Described base station controller receives the non-shutdown registration message of the interior travelling carriage of its coverage to its transmission, and described registration message comprises the IMSI International Mobile Subscriber Identity and the present position-region sign of this travelling carriage;

Described base station controller sends the position updating request information that contains IMSI International Mobile Subscriber Identity to mobile switching centre;

Described base station controller receives the position of containing subscriber directory number information that mobile switching centre returns according to the IMSI International Mobile Subscriber Identity of described travelling carriage and upgrades and receive information;

Described base station controller is judged the present position-region sign of user profile being preserved or upgraded the user according to the subscriber directory number information that receives.

5, as the method for voice communication as described in the claim 2, it is characterized in that, the user profile of travelling carriage in its coverage of described base station controller records, further comprising the steps of:

Described base station controller receives the shutdown registration message of the interior travelling carriage of its coverage to its transmission, and described registration message comprises the IMSI International Mobile Subscriber Identity and the present position-region sign of this travelling carriage;

Described base station controller sends the position updating request information that contains IMSI International Mobile Subscriber Identity to mobile switching centre;

Described base station controller receives the IMSI International Mobile Subscriber Identity of mobile switching centre according to described travelling carriage, upgrades to its position of returning the subscriber directory number information that contains described travelling carriage and receives information;

Described base station controller is according to the user profile of the travelling carriage of the subscriber directory number information deletion subscriber directory number correspondence of described travelling carriage.

6, as the method for voice communication as described in the claim 2, it is characterized in that, the user profile of travelling carriage in its coverage of described base station controller records, further comprising the steps of:

If the travelling carriage in the described base station controller coverage is not carried out registration at the appointed time, then described base station controller is according to the user profile of the described travelling carriage of subscriber directory number information deletion of described travelling carriage.

7, the method for voice communication according to claim 1 is characterized in that, finishes at described base station controller before the voice communication of setting up described first travelling carriage and described second travelling carriage, and is further comprising the steps of:

Described base station controller judges whether the signaling link between itself and the mobile switching centre interrupts;

When base station controller judges that signaling link between itself and the mobile switching centre interrupts, base station controller takes out called number from the initial call message of first travelling carriage, the inquiring user telephone number record, if inquire the user profile of described second travelling carriage, then judge the state of described second travelling carriage, if described second travelling carriage free time then construct beep-page message, described second travelling carriage of paging, the voice communication of setting up described first travelling carriage and second travelling carriage.

8, the method for voice communication according to claim 1 is characterized in that, and is after described base station controller is finished the voice communication of setting up the calling and called travelling carriage, further comprising the steps of:

Signaling link restoration between described base station controller and mobile switching centre, and before voice communication finishes, in case described mobile switching centre sends paging request message to described base station controller, the described paging request message that then described base station controller will be received abandons or returns page response indication called mobile station to described mobile switching centre and hurry.

9, the method for voice communication according to claim 1 is characterized in that, after described base station controller is set up the voice communication of calling and called travelling carriage, further may further comprise the steps:

Described base station controller generates the simple station message recording of described voice communication;

When the signaling link restoration between described base station controller and the mobile switching centre, described base station controller sends to described mobile switching centre with the simple station message recording;

Described mobile switching centre generates the final station message recording according to the simple station message recording.

10, a kind of base station controller is characterized in that, described base station controller comprises information processing module of user's, with the call setup module that links to each other with described information processing module of user's, and the transceiver module that links to each other with described call setup module;

Described information processing module of user's is used to write down the user profile of travelling carriage in the described base station controller coverage;

Described transceiver module is used to receive the call signal of described travelling carriage and sends call signal to described travelling carriage;

Described call setup module, be used for after described transceiver module is received the call signal of described travelling carriage, judge whether the signaling link between described base station controller and the mobile switching centre interrupts, and when interrupting, whether the user profile of inquiry called mobile station exists in information processing module of user's, if judge that described user profile exists then the voice communication of setting up the calling and called travelling carriage according to the subscriber directory number information of called mobile station.

11, base station controller as claimed in claim 10 is characterized in that, described information processing module of user's further comprises registration process submodule and user profile processing sub,

Described registration process submodule is used for carrying out communication with described travelling carriage and handles the enrollment process of described travelling carriage, and with the communication of described mobile switching centre;

Described user profile processing sub is used for storage administration user profile, obtains the register information of travelling carriage in the described base station controller coverage from the registration process submodule.

12, base station controller as claimed in claim 10 is characterized in that, described call setup module comprises to be judged submodule, inquiry submodule and call out submodule,

Described judgement submodule is used to judge whether the signaling link between described base station controller and the mobile switching centre interrupts;

Described inquiry submodule, whether the user profile that is used for inquiring about described called mobile station is present in the user profile of the travelling carriage of described base station controller records;

Described calling submodule, the signaling link that is used between described base station controller and mobile switching centre interrupts, and when the user profile of described called mobile station is present in the user profile of travelling carriage of described base station controller records, the structure beep-page message, the paging called mobile station, the voice communication of setting up the calling and called travelling carriage.

13, base station controller as claimed in claim 12, it is characterized in that, described call setup module also comprises the page response submodule, when being used for the signaling link interruption between described base station controller and mobile switching centre, and before voice communication finishes, if the signaling link restoration between described base station controller and the mobile switching centre, the paging request message that described mobile switching centre is sent to described base station controller abandons or returns page-response message to described mobile switching centre, and the indication called mobile station is busy.

14, base station controller as claimed in claim 10 is characterized in that, described base station controller also comprises simple accounting module, is connected with described call setup module, is used to generate the simple station message recording of described voice communication.

15, base station controller as claimed in claim 10 is characterized in that, the user profile of described travelling carriage comprises the subscriber directory number of described travelling carriage and the corresponding relation of IMSI International Mobile Subscriber Identity, present position-region sign and paging time-slot periodic key.

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