CN1248442C - Method for realizing voice prority service in data and voice interaction - Google Patents

Abstract

The invention discloses a method for realizing the voice priority service in data and voice interaction in a CDMA mobile communication network. In the invention, the mobile switching center checks and judges the current Whether the state of the voice priority service in the mobile station is an active state, if not, reject the voice incoming call, and end the method flow; if yes, the mobile switching center sends an instruction message to the base station to start the clearing command message of the mobile station to enter the dormant state process; the base station receives the After clearing the command message, start the processing flow of making the mobile station enter the dormant state, and then process the voice call according to the processing flow of the mobile station in the dormant state. Using the invention can make the realization process of the whole voice priority service simpler, speed up the process processing speed, and reduce the response time of the mobile station.

Description

A method for realizing voice priority service in data and voice interaction

technical field

The invention relates to a method for realizing a service in a wireless communication system, in particular to a method for realizing a voice priority service in the data and voice interaction of a Code Division Multiple Access (CDMA) system.

Background technique

In the CDMA system protocol specification, there are three states in user data service operation: idle state, active state and dormant state. When the mobile terminal is activated, if the system does not support concurrent services, the user cannot be called as a voice during data interaction, so some important incoming calls may be missed. Even if the system supports concurrent services, there are still a large number of mobile terminals that do not support concurrent services. Users of these mobile terminals cannot receive incoming calls when using data services, which brings great inconvenience to users.

In order to solve this problem, a method for receiving a voice call in the case of a mobile station (MS) performing data services is currently proposed, and its processing flow is shown in FIG. 1 . As shown in Figure 1, when the mobile station is performing data services and there is a new voice call, at first the mobile switching center (MSC) sends a paging message to the base station (BS), and the base station receives the paging message Return a clearing request to the MSC to suspend the current data service, and then the MSC sends a clearing command message to the base station, and the base station performs the clearing operation, including the release of A9 between the base station and the packet data control function (PCF) as A8 and the release of A9 as The step of A8 completion, after clearing operation is finished, at this moment mobile station is in the state that the data service is dormant and keeps point-to-point protocol (PPP) connection, and base station sends a paging message to mobile station again this moment, mobile station can thus carry out Normal voice conversation. PDSN in Fig. 1 is the data serving node that divides into groups.

In this method, since the paging message received by the base station is a connectionless paging message, that is, the common base station does not know the communication status of the mobile station at this time, for example, the mobile station is currently conducting a voice call, is The data service is still in an idle state. Since the base station cannot distinguish the current state of the user, it is difficult to decide whether to send the paging message directly or temporarily save it first. For example, if the mobile station is performing data services at this time, it needs to temporarily save the paging message, and then send it after the data goes to sleep; if the mobile station is idle, the paging message can be directly sent to the mobile station. However, if the state of the mobile station cannot be known, it is difficult for the base station to perform the next step of processing, so this method is not practical in actual situations.

At the same time, since the MSC sends a paging message to the base station, the base station needs to return a clear request, so the message interaction is complicated, which reduces the response speed and prolongs the response time.

Contents of the invention

In view of this, the object of the present invention is to provide a method for realizing voice priority service in data and voice interaction with simple processing and fast response speed.

Above-mentioned purpose of the present invention is solved by following technical scheme:

A method for realizing voice priority service in data and voice interaction, comprising the following steps:

a. After the mobile switching center receives the incoming voice call for the mobile station in data communication, check and judge whether the state of the voice priority service in the current mobile station is activated, if yes, then perform step b, otherwise reject the incoming voice call, end this process;

b. The mobile switching center sends a clear command message to the base station, which includes a special cause value indicating that the base station starts the mobile station to enter the sleep state process;

c. After receiving the clear command message sent in step b, the base station starts the processing flow for making the mobile station enter the dormant state, and then processes the incoming voice call according to the processing flow for the mobile station in the dormant state.

The method may further include the step of presetting the special cause value.

In the implementation method of the voice priority service, the state of the voice priority service further includes activation, deactivation, single activation and single deactivation states. Wherein, the activation and deactivation states are stored in the call feature indicator located in the home location register, and the single activation and single deactivation states are stored in the single feature indicator located in the mobile switching center. When the mobile station performs location registration, the home location register sends the activation or deactivation status information of the current mobile station to the mobile switching center.

It can be seen through the technical scheme of the present invention that because a special cause value indicating the registration status of the mobile station voice priority service is added in the clear command message sent by the mobile switching center to the base station, the mobile switching center can clearly know that the mobile station state, so the base station can explicitly initiate the procedure to put the mobile station into sleep state. Because the voice priority service is started by the mobile switching center in the present invention, it is different from starting by the base station in the prior art, and the mobile switching center is different from the base station, and it can clearly know the service state of the mobile station, so the present invention avoids the existing In the prior art, it is difficult for the base station to decide whether to send the command or temporarily store the command, so that the whole service processing is simpler.

In addition, since the present invention omits the step of the base station returning the clear request to the mobile switching center, the message interaction in the whole process is simpler, thereby speeding up the response speed and reducing the response time.

Description of drawings

FIG. 1 is a schematic diagram of a processing flow of a voice priority service in the prior art;

Fig. 2 is a structural diagram of a call feature indicator;

Fig. 3 is a structural diagram of a single characteristic indicator;

Fig. 4 is the processing flowchart of service notification when the mobile station location is updated in the present invention;

Fig. 5 is a block flow diagram of the present invention;

Fig. 6 is a schematic diagram of the processing flow of the voice priority service of the present invention.

Detailed ways

The present invention will be described in detail below with reference to the drawings and specific embodiments.

The voice priority service can be provided by the system operator as a service like call waiting. If users want to use this service, they can choose to register with the system operator. The registration and activation process is the same as that of other services such as call waiting. The service operation code is different, and the voice priority service can also be registered as activation/deactivation or single activation/single deactivation. Generally, the operation code of call waiting is: ^* 700-single deactivation, ^* 74-activation, ^* 740-deactivation, correspondingly, the operation code of voice priority service can be defined as: ^* 710-single deactivation, ^* 77 - activate, ^* 770 - deactivate. The single activation here does not actually have a corresponding opcode because it will not be used in actual situations. The operation code here is only used for a system operator to identify different services, and has no direct relationship with the present invention.

After the user has opened this service, the system needs to change the D interface protocol, that is, to increase the status indication of the voice priority service in the calling feature indicator (CallingFeaturesIndicator) located in the home location register (HLR). Figure 2 is a block diagram of a call feature indicator. In the call feature indicator shown in Figure 2, a reserved bit can be enabled to indicate the voice priority status. For example, setting the H/G bit of the fifth byte indicates the state of voice priority, which can be set as: H/G 0/0-unused; H/G 0/1-unauthorized; H/G 1/0- Authorized but not activated; H/G 1/1 - authorized and activated. After the user registers and opens the voice priority service, the one-time activation/deactivation status can be further set, which is recorded by the one-time feature indicator (OneTimeFeatureIndicator) located in the mobile switching center as shown in FIG. 3 . It is also possible to enable a reserved bit to indicate a voice-first one-shot state. For example, if the F/E of the second byte is set as a single state indicating voice priority, it can be set as: F/E 0/0-unused; F/E 0/1-unauthorized; F/E 1/ 0 - authorized but not activated; F/E 1/1 - authorized and activated.

After the system changes the D interface protocol, that is to say, a status indication about the voice priority service is added in the HLR. As shown in Figure 4, when the mobile station of the user performs location registration, the MSC/VLR sends a registration notification to the HLR, and the HLR returns the user data to the MSC/VLR, and the returned user data includes status indications of all services. That is to say, it contains the information contained in the call feature indicator located in the HLR, and of course also includes the status indication of the voice priority service. This process is the same as the prior art, so it will not be repeated here.

The following specifically introduces the system processing flow in the case that the mobile station receives a voice call while performing data services.

As shown in Figure 5, in step 501, after the user mobile station has registered and opened the voice priority service, when the user mobile station is performing data services, if the MSC receives a voice call, it will first check whether the voice priority service is activated, that is, Read the voice priority service registration status in the call feature indicator obtained from the HLR and the one-shot feature indicator in the MSC itself.

In step 502, the MSC judges whether the voice priority service of the mobile station is currently activated. That is, the MSC checks whether the value of the H/G bit of the fifth byte in the call feature indicator is 1/1, if not 1/1, it indicates that the user mobile station does not use the voice priority service, and executes step 507, also It is to reject the voice call and end this process; if it is 1/1, then check whether the value of the F/E bit of the second byte in the single feature indicator is 1/1, if not 1/1, it indicates The user does not use the voice priority service this time, and executes step 507. If it is 1/1, that is, the voice priority state of the user's mobile station is activated at this time, it indicates that the user will use the voice priority service at this time, and executes step 503.

In step 503, the MSC sends a clear command message to the base station, and adds a special cause value in the clear command message. This special cause value is used to indicate that the data service enters dormancy, that is, it indicates that the base station is required to start the user mobile station to enter the dormant state The flow of this special cause can be defined as 10H, for example. Increasing this special reason value is the core processing of the present invention, because MSC is processing here, so it can know the current state of mobile station, for example whether mobile station is talking, in data communication or in idle state etc., by adding a The special cause value can directly let the base station know that the mobile station is currently in data communication, and needs to make the mobile station of the user enter the sleep state process, the base station can directly start the process of letting the mobile station enter the sleep state, and then send the incoming call to the mobile station, Therefore, the whole processing flow of the present invention is simpler and more practical, and the response time is shortened.

In step 504, after receiving the clearing command message, the base station checks the special cause value named 10H, that is, it knows that it needs to start the user's mobile station to go into a dormant state, and then clears the user's data service communication according to the same steps as in the prior art , so that the mobile station of the user enters the dormant state of the data service while still maintaining the state of the PPP connection.

In step 505, the base station returns a clearing complete message to the MSC after finishing processing the clearing command message.

In step 506, after receiving the clearing completion message returned by the base station, the MSC waits for 2 seconds, and then starts the called process, that is, first sends a paging message to the base station, and then the base station sends a paging message to the mobile station. The mobile station can answer the incoming call. At this time, the mobile station of the user does not receive the data sent on the network. After the voice service is completed, the mobile station of the user can actively activate the data service, or it can be activated again when there is new data information on the network.

The processing flow of the present invention has been described above. Fig. 6 is a schematic diagram of a processing flow compared with the prior art. As can be clearly seen from Fig. 6, the present invention preferentially checks the registration state of the voice priority service in the MSC when a voice call is incoming, and if the service registration state is an active state, then the clear command message can be directly sent to the base station, and There is a special cause value in the clear command message, thereby canceling the steps of sending the paging message directly to the base station and returning the clear request by the base station in the prior art, so the whole processing process of the present invention is simpler, clearer and clearer, effectively The disadvantages of the prior art are avoided.

It should be noted that the present invention can simply implement the voice priority service, but in actual situations, the system can process the priority processing order of the voice priority service and other services according to the importance level of the voice priority service and other services. For example, when a user provides voice services or concurrent services, forwarding on busy (CFB) and forwarding on default (CFD) are prioritized over voice priority services, while when users are performing data services, voice priority services are prioritized over CFB and CFD. The voice priority service is independent of forwarding on no answer (CFNA) or call waiting (CW). When the voice service is connected to a user mobile station that is busy with data services, the system activates the voice priority service instead of CFNA or CW. If the user activates the calling name presentation (CNAP) and voice priority service, or activates the calling number presentation (CNIP) and voice priority service at the same time, the calling name or calling number shall be sent through the voice priority service notification message. In addition, Forwarding Unconditional (CFU) and Do Not Disturb (DND) services are prioritized over voice priority services.

It can be understood that the above is only a specific description of the present invention, but not intended to limit the present invention.

Claims (5)

1. the implementation method of voice priority business in data and the interactive voice comprises the steps:

A. mobile switching centre receives at behind the voice of the travelling carriage that the carries out data communication incoming call, check also to judge whether the state of voice priority business in the current mobile station is state of activation, if, execution in step b then, otherwise refuse described voice incoming call, process ends;

B. mobile switching centre sends clear command message to the base station, includes the cause specific value that the base station initiated travelling carriage of indication enters the resting state flow process in this clear command message;

C. the base station receives after the clear command message of step b transmission, starts to make travelling carriage enter the handling process of resting state, described voice incoming call is handled in the handling process of resting state according to travelling carriage then.

2. the implementation method of voice priority business according to claim 1 is characterized in that, this method further comprises and sets in advance described cause specific value.

3. the implementation method of voice priority business according to claim 1 is characterized in that, the state of described voice priority business comprises that further activation, deexcitation, single activate and the single deactivation status.

4. the implementation method of voice priority business according to claim 3, it is characterized in that, described activation and deactivation status are stored in the call features indicating device that is arranged in attaching position register, and described single activates and the single deactivation status is stored in the single feature indicator that is arranged in mobile switching centre.

5. the implementation method of voice priority business according to claim 4 is characterized in that, when travelling carriage carried out location registers, described attaching position register sent the voice priority business enrollment status of current mobile station to described mobile switching centre.

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