WO2011150729A1

WO2011150729A1 - Method and system for inquiring status of called user in paging

Info

Publication number: WO2011150729A1
Application number: PCT/CN2011/073454
Authority: WO
Inventors: 宋莉; 翟浩杰; 佟萃玲; 姚超; 王振
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-05-31
Filing date: 2011-04-28
Publication date: 2011-12-08
Also published as: CN101854617B; CN101854617A

Abstract

A method and system for inquiring status of a called user in paging are disclosed in the present invention. The method includes that: after a calling user has initiated a voice call, a network side pages a called user; if the called user participates in cluster call with an identity of a traditional member, the network side sends an inquiry request to the called user and learns that the called user has accessed the cluster call according to the inquiry response returned from the called user; and after learning that the called user has accessed the cluster call, the network side stops paging the called user and broadcasts a user busy prompt voice to the calling user.

Description

Method and system for querying called state in paging

Technical field

The present invention relates to techniques for querying a called state, and more particularly to a method and system for querying a called state in a page.

Background technique

The trunking communication system is a mobile communication system used for group dispatching and command communication. It is mainly used in professional mobile communications, such as public safety, transportation, social linkage, municipal management, water conservancy and electric power, and factories and mines. Unlike ordinary mobile communication, the biggest feature of trunking communication is that the voice communication uses the push-to-talk (PTT) button, which is connected in a push-to-talk manner, and the called party can answer the call without going off-hook. The connection speed is faster and can support functions such as group calls.

The network structure of the corresponding cluster system of the present invention is shown in FIG. 1 , and the components are as follows:

(1) Terminal: A terminal device with cluster service function. It also has various service capabilities such as telephone interconnection service, packet data service, and short message service, and can roam within the coverage of the system.

(2) Base station subsystem: Complete the access function of the terminal and distribute it to the corresponding subsystem according to the type of service used by the user.

(3) Switching subsystem: completes the control and exchange function of the terminal telephone interconnection service in its service area, and is the control center of the telephone interconnection service. Switching subsystem through public switched telephone network

(PSTN, Public Switched Telephone Network) Network interconnection.

(4) Scheduling subsystem: Complete the control and management functions of the terminal cluster services in its service area, which is the control center of the cluster services. The scheduling subsystem is interconnected via an IP network.

(5) Packet data subsystem: completes the control and access function of the terminal packet data service in its service area, and is the control center of the packet data service. The packet data subsystems are interconnected via an IP network.

On the basis of the above basic subsystems, in order to provide more abundant services, it is also possible to configure short message subsystems, intelligent network subsystems, positioning subsystems and other components.

In the cluster system, each type of service (such as telephone interconnection service, cluster service, packet data industry) The processing is performed by the corresponding subsystem (such as the switching subsystem, the scheduling subsystem, the packet data subsystem, etc.), and the roaming support of each type of service is provided by the interconnection network between the corresponding subsystems. The interconnection network between these subsystems, together with the cluster system of each region, constitutes a network-wide cluster system network, providing users with roaming support for all types of services across the network.

In the cluster system, the composition structure of the scheduling subsystem is shown in Figure 2, and the functional nodes are described as follows:

(1) Dispatch server: Implement call control and call rights management for trunk calls.

(2) Scheduling home register: saves the registration information and location information of cluster users and groups, implements authentication, authorization and accounting functions for cluster users, as well as location update and group management functions.

(3) Dispatcher server: Maintain the sessions of each dispatching station and management station, and realize the management and maintenance of the cluster scheduling by the management station and the dispatching station.

In the scheduling subsystem, the paging mode of the trunk call is divided into two types: traditional paging and enhanced paging according to different channel resource allocation modes.

The conventional paging is characterized in that the base station subsystem does not separately allocate an air channel for each user, but allocates a shared air channel for each group. Since a group is only allocated a shared traffic channel in one cell, this can make the number of members of a single group unrestricted. This type of paging is similar to the traditional trunking system and is therefore referred to as traditional paging.

The enhanced paging is characterized in that the base station subsystem separately allocates an air channel for each user according to a paging mode of a CDMA (Code Division Multiple Access) 2000 lx ordinary voice call. Each user has its own independent forward and reverse control channels and each completes its own access process. Compared with the traditional paging, the user who accesses the call in response to the paging mode can implement more supplementary services, so it is called enhanced paging.

Correspondingly, membership in a trunk call is divided into enhanced members and traditional members according to different paging methods.

The enhanced member refers to a member who uses an enhanced paging method. For this type of member, once the call is accessed, the base station subsystem notifies the switching subsystem that the channel assignment is successful. Therefore, the switching subsystem clearly knows that it is in the cluster call busy state. For this type of member, once the call is accessed, the base station subsystem notifies the scheduling subsystem that the paging is successful, so the scheduling subsystem explicitly knows whether it is accessing the call. The traditional type member refers to a member who uses the traditional paging method. For this type of member, even if the call is accessed, the base station subsystem does not notify the switching subsystem that the channel assignment is successful. Therefore, the switching subsystem cannot know that it is in the cluster call busy state. For this type of member, even if the call is accessed, the base station subsystem will not notify the scheduling subsystem that the paging is successful, and therefore, the scheduling subsystem cannot know whether it is accessing the call.

In the prior art, the following problems exist: When the calling party initiates a voice call, if the called party has accessed the trunking call with the traditional membership, the switching subsystem will still be able to learn the called state, and still send the called party to the called party. The caller prompts the caller "The caller is temporarily unable to connect" after the paging failure, but the callee is actually busy, which affects the user experience of the caller.

Summary of the invention

The technical problem to be solved by the present invention is to provide a method and system for querying the called state in paging, so that the switching subsystem can know the called state of the traditional membership by querying.

To solve the above technical problem, the present invention provides a method for querying a called state in paging, the method comprising:

After the calling user initiates a voice call, the network side pages the called user;

If the called user participates in the cluster call as a traditional member, the network side sends a query request to the called user, and learns that the called user has accessed the cluster according to the query response returned by the called user. call.

The method further includes: after learning that the called user has accessed the cluster call, the network side stops paging of the called user, and plays a busy prompt tone to the calling user.

The step of the network side sending a query request to the called user includes: sending, by the network side, the query request to the called user by using a shared service channel.

The method further includes: if the called user has accessed the cluster call, returning the query response after receiving the query request through the shared service channel.

After the calling user initiates the voice call, the network side paging the called user includes: the calling user initiates a voice call, and the switching subsystem passes the base station subsystem after authenticating the calling user and the called user. Paging the called user. If the called user participates in the cluster call as a traditional member, the network side sends a query request to the called user, and learns that the called user has received the query according to the query response returned by the called user. The steps involved in the cluster call include:

The base station subsystem sends a user status query request carrying the identification code of the called user to the scheduling subsystem; the scheduling subsystem determines whether the called user participates in the cluster call as a traditional member, and if so, passes through the base station The system sends a traditional member status query request carrying the identifier of the called user on the shared service channel;

If the called user has accessed the cluster call, after receiving the traditional member status query request, returning the traditional member user status query response;

After receiving the traditional member user status query response, the scheduling subsystem returns a user status query response to the base station subsystem.

After the network side knows that the called user has accessed the cluster call, stops the paging of the called user, and the step of playing the user busy prompt tone to the calling user includes:

After receiving the user status query response, the base station subsystem knows that the called user has accessed the cluster call, and sends a notification to the switching subsystem that the called user has accessed the cluster call, and the switching subsystem stops. Paging the called user and playing a user busy tone to the calling user through the base station subsystem.

The step of paging the called user by the base station subsystem includes: the switching subsystem carries the cluster service subscription flag in the paging message when paging the called user through the base station subsystem.

The step of the base station subsystem sending the user status query request to the scheduling subsystem includes: the base station subsystem sending the user status query request to the scheduling subsystem according to the cluster service subscription sign. The present invention also provides a system for querying the called state in paging, the system comprising a paging unit and a user status query unit, wherein:

The paging unit is configured to: after the calling user initiates a voice call, page the called user, and notify the user status query unit;

The user status query unit is configured to: after receiving the notification of the paging unit, determine the Whether the called user participates in the cluster call as a traditional member, and if so, sends a query request to the called user, and learns that the called user has accessed the cluster call according to the query response returned by the called user.

The user status query unit is further configured to: after learning that the called user has accessed the cluster call, send, to the paging unit, a user status notification that the called user has accessed the cluster call; The unit is further configured to: after receiving the user status notification, stop paging the called user, and play a busy prompt tone to the calling user.

The user status query unit is configured to send the query request to the called user in the following manner: sending the query request to the called user by using a shared service channel.

The paging unit is further configured to: be located in a switching subsystem.

The user status query unit includes a first query module located in the base station subsystem and a second query module located in the scheduling subsystem, where:

The first query module is configured to: after receiving the notification of the paging unit, send a user status query request message carrying the identifier of the called user to the second query module; After the user status query response returned by the second query module is received, the user is informed that the called user has accessed the cluster call, and then sends a notification to the paging unit that the called user has accessed the cluster call.

The second query module is configured to: determine whether the called user participates in the cluster call as a traditional type member, and if yes, send the identifier of the called user on the shared service channel by using the first query module The traditional member status query request of the code; and after receiving the traditional member user status query response returned by the called user, returning a user status query response to the first query module.

The paging unit is configured to page the called user in the following manner: When the called user is paged through the base station subsystem, the paging service subscription flag is carried in the paging message.

The first query module is further configured to: send the user status query request to the second query module according to the cluster service subscription sign carried in the paging message.

The paging unit includes a first paging module in the switching subsystem and a second paging module in the base station subsystem, where: The first paging module pages the called user through the second paging module.

The first paging unit is configured to page the called user in the following manner:

When paging the called user through the second paging module, the cluster service subscription flag is carried in the paging message.

In summary, the present invention provides a method and system for querying the called state in paging. After the calling party initiates a voice call, by calling the state of the called party, when the called party has accessed the cluster call by the traditional membership, When the caller plays a busy tone to the calling party, the caller's feeling is improved. BRIEF abstract

1 is a schematic diagram of a network structure of a digital trunking communication system;

Figure 2 is a schematic diagram of the composition of the scheduling subsystem;

FIG. 3 is a flowchart of querying the called state in the paging of the application example of the present invention, and prompting the voice caller to be busy. Preferred embodiment of the invention

The basic idea of the present invention is to provide a method for querying the called state in paging. When the calling party initiates a voice call, the switching subsystem can, according to the state of the called party, if the called party has accessed the cluster call, Then, the calling party plays a busy tone of the user, so that the called state can be obtained by querying and the calling party can be notified, thereby improving the user experience of the calling user.

Based on the above idea, the present invention provides a method for querying a called state in paging, which is applied to a digital trunking communication system, and includes the following steps:

After learning that the called user has accessed the cluster call, the network side stops paging the called user and sends a busy prompt to the calling user.

The network side sends the query request to the called user through a shared service channel; if the called user has accessed the cluster call, after receiving the query request through the shared service channel, returning the query Answer; otherwise, if the called user does not access the trunk call, the query request will not be received.

The method may specifically include the following steps:

The calling user initiates a voice call, and the switching subsystem authenticates the calling user and the called user, and then pages the called user through the base station subsystem;

The base station subsystem sends a user status query request to the scheduling subsystem, where the message carries the identification code of the called user; the scheduling subsystem determines whether the called user participates in the cluster call as a traditional member, and if so, passes the base station The subsystem sends a traditional member status query request on the shared service channel, and carries the identifier of the called user;

After receiving the traditional member user status query response, the scheduling subsystem returns a user status query response to the base station subsystem; After receiving the user status query response, the base station subsystem knows that the called user has accessed the cluster call, and sends a notification to the switching subsystem that the called user has accessed the cluster call, and the switching subsystem stops. Paging the called user and playing a user busy tone to the calling user through the base station subsystem.

The switching subsystem carries a cluster service subscription sign in the paging message when paging the called user through the base station subsystem;

The base station subsystem sends the user status query request to the scheduling subsystem according to the cluster service subscription flag carried in the paging message.

The implementation of the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific application examples.

FIG. 3 is a flow chart of querying the called state and the voice caller's busy prompt in the paging of the application example of the present invention. In this application example, the called user has opened the voice service and the cluster service, and the specific steps of the process are described as follows:

Step 301: The calling party initiates a voice call.

Step 302: After the switching subsystem authenticates the calling and called users, the paging is called by the base station subsystem, and the message carries the cluster service subscription sign. If the authentication fails, the calling party calls the voice call to establish the voice call. Failed, the process ends;

Step 303: The base station subsystem sends a user status query request to the scheduling subsystem, where the message carries the called identification code.

Step 304: The scheduling subsystem determines whether the called party participates in the trunking call as a traditional member. If yes, the base station subsystem sends a traditional member status query request on the shared service channel, where the message carries the called identification code; otherwise, Without subsequent steps, the process ends;

Step 305: If the called party has accessed the cluster call, after receiving the traditional member status query request through the shared service channel, returning the traditional member query response, and thus, the scheduling subsystem explicitly knows that the called party has accessed the cluster call; If the called party does not access the cluster call, it will not receive the traditional member status query request, and therefore will not return the user status query response.

Step 306: The scheduling subsystem returns a user status query response to the base station subsystem, and notifies the called party. Busy in the cluster call;

Step 307: The base station subsystem sends a user status notification to the switching subsystem to notify the called party that the cluster call is busy. Step 308: The switching subsystem stops paging the called party, and the base station subsystem plays the user busy prompt tone to the calling party.

In addition, the embodiment of the present invention further provides a system for querying a called state in a paging, where the system includes a paging unit and a user status query unit, where:

The user status query unit is configured to: after receiving the notification of the paging unit, determine that the called user participates in a cluster call as a traditional type member, and if yes, send a query request to the called user, and Obtaining that the called user has accessed the cluster call according to the query response returned by the called user.

The user status querying unit is further configured to: after learning that the called user has accessed the cluster call, send, to the paging unit, a user status notification that the called user has accessed the cluster call;

The paging unit is further configured to: after receiving the user status notification, stop paging the called user, and play a busy prompt tone to the calling user.

The user status query unit is further configured to: send the query request to the called user through a shared service channel.

The paging unit may be configured to: be located in a switching subsystem;

Or the paging unit includes: a first paging module in the switching subsystem and a second paging module in the base station subsystem, where: the first paging module is paged by the second paging module The called user.

The user status query unit includes: a first query module in the base station subsystem and a second query module in the dispatch subsystem, wherein:

The first query module is configured to: after receiving the notification of the paging unit, to the second check The query module sends a user status query request, and the message carries the identification code of the called user; and after receiving the user status query response returned by the second query module, it is learned that the called user has accessed the cluster call. Sending, to the paging unit, a user status notification that the called user has accessed the cluster call;

The second query module is configured to: determine whether the called user participates in a trunking call as a traditional member, and if yes, send a traditional member status query request on the shared service channel by using the first query module, Determining an identifier of the called user; and returning a user status query response to the first query module after receiving the traditional member user status query response returned by the called user.

The second query module may be located in a scheduling server in the scheduling subsystem.

The paging unit is configured to page the called user in the following manner: when paging the called user through the base station subsystem, carrying the cluster service subscription flag in the paging message;

It should be understood that those skilled in the art to which the present invention pertains may make corresponding equivalent changes or substitutions in accordance with the technical solutions of the present invention, and all such changes or substitutions should be included in the appended claims. The scope of protection.

Industrial applicability

The invention provides a method and a system for querying the called state in paging. After the calling party initiates a voice call, the calling party queries the called state, and when the called party has accessed the cluster call with the traditional membership, the calling party is called. The user's busy tone is played to improve the calling experience, so it has strong industrial applicability.

Claims

Claim

A method for querying a called state in a paging, the method comprising:

2. The method of claim 1 further comprising

After learning that the called user has accessed the cluster call, the network side stops paging the called user and plays a busy prompt tone to the calling user.

3. The method of claim 1, wherein the step of the network side transmitting a query request to the called user comprises: the network side transmitting the query request to the called user over a shared service channel.

4. The method of claim 3, further comprising:

If the called user has accessed the trunked call, the query response is returned after receiving the query request through the shared traffic channel.

The method according to any one of claims 2-4, wherein, after the calling user initiates a voice call, the step of the network side paging the called user includes:

The calling user initiates a voice call, and the switching subsystem authenticates the calling user and the called user, and then pages the called user through the base station subsystem.

The method according to claim 5, wherein, if the called user participates in a trunking call as a traditional member, the network side sends a query request to the called user, and returns according to the called user. The step of querying that the called user has accessed the cluster call includes: the base station subsystem sends a user status query request carrying the identification code of the called user to the scheduling subsystem; the scheduling subsystem determines that the called Whether the user participates in the cluster call as a traditional member, and if so, sends a traditional member status query request carrying the identification code of the called user on the shared service channel through the base station subsystem;

If the called user has accessed the cluster call, the traditional member status query is received. After the request, return the traditional member user status query response;

7. The method according to claim 6, wherein the network side stops paging of the called user after learning that the called user has accessed the cluster call, and plays the user busy to the calling user. The steps of the prompt tone include:

8. The method of claim 6, wherein the step of the sub-system paging the called user through the base station subsystem comprises:

The switching subsystem carries the cluster service subscription flag in the paging message when paging the called user through the base station subsystem.

9. The method of claim 8, wherein the step of the base station subsystem transmitting a user status query request to the scheduling subsystem comprises:

The base station subsystem sends the user status query request to the scheduling subsystem according to the cluster service subscription flag.

10. A system for querying a called state in a paging, the system comprising a paging unit and a user status query unit, wherein:

The user status query unit is configured to: after receiving the notification of the paging unit, determine whether the called user participates in a cluster call as a traditional member, and if yes, send a query request to the called user, And obtaining, according to the query response returned by the called user, that the called user has accessed the cluster call.

11. The system of claim 10, wherein

The user status query unit is further configured to: learn that the called user has accessed the cluster call And sending, to the paging unit, a user status notification that the called user has accessed the cluster call; the paging unit is further configured to: stop receiving the paging of the called user after receiving the user status notification And playing a user busy tone to the calling user.

12. The system of claim 11, wherein the user status query unit is configured to send the query request to the called user in the following manner:

The query request is sent to the called user through a shared service channel.

13. The system of any of claims 10-12, wherein the paging unit is further configured to: be located in a switching subsystem.

14. The system of claim 13, wherein the user status query unit comprises a first query module located in the base station subsystem and a second query module located in the dispatch subsystem, wherein:

15. The system of claim 14, wherein the paging unit is configured to page the called user in the following manner:

When the called user is paged through the base station subsystem, the cluster service sign is carried in the paging message.

16. The system of claim 15 wherein

The system according to any one of claims 10 to 12, wherein the paging unit comprises a first paging module in the switching subsystem and a second paging module in the base station subsystem, wherein: the first paging module pages the called user by using the second paging module.

18. The system of claim 17, wherein the user status query unit comprises a first query module located in the base station subsystem and a second query module located in the dispatch subsystem, wherein:

19. The system of claim 18, wherein the first paging unit is configured to page the called user in the following manner:

20. The system of claim 19, wherein