CN1997182A - A control method and system for speaking right - Google Patents

Abstract

The present invention proposes a speaking right control method and system in a trunking system. The trunking switching center receives a speaking right control request message sent by a user terminal, processes the speaking right control request message, generates a speaking right control message, and The speaking right control message is sent to the base station subsystem; the base station subsystem receives the speaking right control message, and sends the speaking right control message to the user terminals under the base station subsystem through the shared forward channel; Forward channel, obtain the right to speak control information, and then carry out relevant operation; By implementing the present invention, reduce the number of times of sending the right to speak message, save channel occupation, reduce the load of forward channel, adopt public channel to send the right to speak control message at the same time, reduce The time difference for each user to receive the right to speak message is reduced, and the user experience is improved.

Description

Method and system for speaking right control

technical field

The invention belongs to the communication field, and in particular relates to a speaking right control method and system in a trunking communication system.

Background technique

Digital trunking is the main body of dedicated wireless communication today. It also belongs to the category of mobile communication, but it can integrate functions such as command and dispatch, telephone, data, short message, multimedia image and OverIP. Compared with the public and global mobile communication, it has a series of special Functions, especially in scheduling, network structure and security control, have their unique characteristics and complexity, such as fast scheduling group call, broadcast, unicast, forced release, forced insertion, abbreviated addressing, priority call, delayed entry, Environmental monitoring, control transfer, dynamic reorganization, automatic retransmission, VPN networking, etc. The most important features are the effective command, communication, dispatch and half-duplex mode of operation of group and group users.

CT800 is a CDMA network-based cluster common network and private network solution. Its system structure is shown in Figure 1. In the system, TSC (Trunk Switch Center) is the trunking switching center, responsible for traffic management in the trunking system. The basic difference between CDMA trunking communication and ordinary CDMA communication is that multiple people can participate in a session, and only one user can control the speaking right at a time, so the management of speaking right in trunking calls is one of the very important functions.

The general application scenarios of speaking right management are as follows:

When the call right is idle, the system will send a Floor Idle message to all MSs (user terminals) in the call. After receiving the message, the MS will show the user that it can apply for the talk right. The user applies for the right to speak, and sends a Floor Request message to the system through the MS; after passing the authority check, the system grants the speaking right to the applying user, and sends Floor Grant to the applying user MS, and the MS indicates that the user can speak; then the system sends a message to other MSs in the current call Send a Floor Taken message, and these MSs will indicate to the user who holds the right to speak after receiving the message. After the user finishes speaking, the user releases the floor release message and sends a Floor Release message to the system through the MS. The system takes back the floor release message and sends a Floor Idle message to all MSs in the call. The MS that receives the Floor Idle message displays the floor idle message to each user.

Specifically, in the prior art, after the group call right is changed, the TSC/BSS uses unicast to send a talk right message to the MS through a dedicated forward channel between each MS and the BSS, informing it of the current call right Which user owns the free or talk right. Let's take the process of the speaker releasing the right to speak as an example to give a brief description. The process is shown in Figure 2:

Step 201, call establishment process for the cluster user;

Now, we assume that user terminal MS1 has the right to speak, and user terminal MS1 is about to release the right to speak.

In steps 202 to 203, MS1 sends a FloorRelease message to the TSC through the current BSC/PCF1 to notify the TSC to release the speaking right.

Step 204, the TSC receives the Floor Release message, and judges whether the current user can release the speaking right, if yes, the TSC withdraws the speaking right, and proceeds to step 205.

In steps 205 to 210, the TSC sends a Floor Idle message to the BSC/PCF where each MS is located, and each BSC/PCF sends the message to the MS through the dedicated forward channel established with each MS after receiving the Floor Idle message, Inform each MS that the current speaking right state is idle and can apply for speaking right.

Similarly, when a user terminal applies for the right to speak, the TSC sends a Floor Grant message to the user who has obtained the right to speak through a dedicated forward channel, and sends a FloorTaken message to other user terminals through a dedicated forward channel to notify the current user terminal to obtain the right to speak. Their workflow is roughly the same.

In the above description, the TSC sends the FloorGrant message, Floor Idle message and Floor Taken message through a dedicated forward channel, that is, it needs to be sent once for each MS. This method has the following disadvantages:

1. For the same speaking right message that needs to be sent to each user in the call, TSC/BSC sends the speaking right message to each user through a dedicated channel. The message volume is large and consumes a lot of power. In the trunking call, the speaking right changes frequently, which aggravates the situation System forward load;

2. The message of the right to speak of each user is not sent at the same time, the time when the user receives the message of the right to speak is inconsistent, and the status of the right to speak of some users is displayed lagging behind.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a method and system for speaking right control, which solves the problems of resource consumption and inconsistency of time for users to receive speaking right messages.

A speaking right control method proposed in an embodiment of the present invention includes:

The trunking switching center receives the speaking right control request message sent by the user terminal, processes the speaking right control request message, generates a speaking right control message, and sends the speaking right control message to the base station subsystem;

The base station subsystem sends the speaking right control message to the user terminal through a shared forward channel.

Before the cluster switching center receives the speaking right control request message sent by the user terminal, it further includes:

The base station subsystem establishes a shared forward channel.

In the above solution, when the speaking right control request message is a speaking right release message, the speaking right control message is a speaking right idle message, and sending the speaking right control message to the base station subsystem includes:

The trunking switching center judges whether the current user terminal can release the speaking right, and if yes, the trunking switching center takes back the speaking right of the user terminal, and sends a speaking right idle message to the base station subsystem.

In the above solution, when the speaking right control request message is a speaking right request message, the speaking right control message is a speaking right authorization message, and sending the speaking right control message to the base station subsystem includes:

The trunking switching center determines that the current speaking right is free and can be granted, and then sends a speaking right authorization message to the base station subsystem, wherein the speaking right authorization message carries the identifier of the user terminal.

In the above solution, before sending the speaking right authorization message to the base station subsystem, it further includes:

The cluster switching center authenticates the user terminal requesting the speaking right.

In the above scheme, it further includes,

The user terminal receives the speaking right authorization message, and judges whether the user terminal identification carried in the speaking right authorization message is consistent with the user terminal's own identification; if they are consistent, the user terminal has the speaking right.

The above scheme further includes:

When the user terminal identifier carried in the speaking right authorization message is inconsistent with the user terminal's own identifier, the user terminal is notified of the user terminal identifier carried in the speaking right authorization message, indicating the user who currently has the speaking right terminal.

In the above solution, there are one or more base station subsystems.

The embodiment of the present invention also proposes a speaking right control system, including:

The trunking switching center: receives the speaking right control request message sent by the user terminal, processes the speaking right control request message sent by the user terminal, generates a speaking right control message, and sends the speaking right control message to the base station subsystem;

The base station subsystem: receives the speaking right control message sent by the trunking switching center, and sends the speaking right control message to the user terminal through the shared forward channel.

The above system further includes:

When the trunking switching center receives the speaking right control request message as a speaking right release message, the trunking switching center withdraws the speaking right, and sends a speaking right idle message to the base station subsystem;

When the cluster switching center receives the speaking right control request message as a speaking right request message, the cluster switching center judges whether the current speaking right is idle, and if so, sends a speaking right authorization message to the base station subsystem .

The embodiment of the present invention proposes a speaking right control method and system. By sharing the forward channel, the base station subsystem can broadcast the speaking right message to multiple user terminals, reduce the number of times the speaking right message is sent, save channel resources, and reduce the load of the forward channel. At the same time, the public channel is used to send the speaking right control message, which reduces the time difference for each user to receive the speaking right message and improves user experience.

Description of drawings

Fig. 1, CDMA trunking system network structure diagram;

Fig. 2, the signaling interaction diagram of the right to release in the CDMA trunking system in the prior art;

Fig. 3 is a flow chart of speaking right control proposed by a specific embodiment of the present invention;

Fig. 4, the CDMA trunking system that the specific embodiment of the present invention proposes releases signaling interactive diagram;

Fig. 5 is an interaction diagram of the speech right authorization signaling of the CDMA trunking system proposed by the specific embodiment of the present invention.

Detailed ways

In order to better describe the technical solution of the present invention, the specific implementation process of the present invention will be described in detail below in conjunction with the accompanying drawings.

Embodiments of the present invention propose a speaking right control method. The base station subsystem establishes a shared forward channel, and the trunking switching center receives the speaking right control request message sent by the user terminal, performs speaking right processing according to the speaking right control request message, and generates A speech right control message, and send the speech right control message to the base station subsystem connected to it; the base station subsystem sends the speech right control message to each user terminal through the shared forward channel. Each user terminal obtains the speaking right control information through the shared forward channel, and then performs related operations.

As shown in Figure 3, it is a flow chart of a specific embodiment of the speaking right control method proposed by the present invention, including the following steps:

Step 301, the base station subsystem establishes a shared forward channel;

The user terminal initiates a call, and the base station subsystem within the coverage of the trunking switching center establishes a shared forward channel according to the instructions of the trunking switching center;

Step 302, the user terminal sends a speaking right control request message to the trunking switching center;

The user terminal may be a terminal having the right to speak, or a terminal wishing to obtain the right to speak.

Step 303, the trunking switching center receives the speaking right control request message, and judges the type of the speaking right control request message;

The trunking switching center dialogue right control request message judges, when the user terminal is a speaker and wishes to release the right to speak, then the right to speak control request message is a right to speak release message, go to step 304;

When the user terminal initiates a speaking right request and wishes to obtain the speaking right, the speaking right control request message is a speaking right request message, and the procedure goes to step 307 .

Step 304, the trunking switching center judges that the right to speak can be released, and withdraws the right to speak;

The trunking switching center checks whether the user who wants to release the right to speak has the right to speak, and if he has the right to speak, then take back the right to speak, otherwise, ignore the release request; here it is mainly to prevent some user terminals from making mistakes. The trunking switching center releases the speaking right, resulting in an error in the calling right.

Step 305, the cluster switching center sends a speech right idle message to the base station subsystem;

A trunking switching center is connected to at least one base station subsystem, and the trunking switching center sends a talk right idle message to each base station subsystem connected to it. Here, the talk right idle message is the above-mentioned talk right control message, and notifies the base station subsystem speaker The user releases the right to speak.

Step 306, the base station subsystem sends a speech right idle message to the user terminal through the shared forward channel;

After receiving the speech right idle message, each base station subsystem sends a speech right idle message through the shared forward channel to notify the user terminals within its coverage that the speech right is idle at this time.

In step 307, the trunking switching center judges whether the current speaking right is free, and if so, judges whether the speaking right can be granted, and if so, goes to step 308.

Step 308, the trunking switching center sends a speech right authorization message to the base station subsystem, where the speech right authorization message is the above speech right control message, which carries the identifier of the user terminal to which the speech right is granted;

A cluster switching center is connected to at least one base station subsystem, and the cluster switching center sends a speaking right authorization message to each base station subsystem connected to it.

Step 309, the base station subsystem sends a speech right authorization message to the user terminal through the shared forward channel;

After each base station subsystem receives the speech right authorization message, it sends the speech right authorization message through the shared forward channel to notify the user terminals within its coverage. In comparison, when the identifications are consistent, the user terminal has the right to speak, and if they are inconsistent, the user terminal is notified of the user terminal that has the right to speak.

The above is the overall implementation flow chart of a speaking right control system proposed by the embodiment of the present invention. Next, we will use the implementation in a CDMA cluster as an example to explain the release and acquisition of the speaking right by the user terminal respectively.

As shown in Figure 4, the signaling flow chart for group call users to release the speaking right. In this process, the cluster switching control center TSC controls two base station subsystems BSS1 and BSS2, and the corresponding entities are BSC/PCF1 and BSC respectively /PCF2, where within the coverage of BSC/PCF1, users MS2 and MS3 access the group call, and within the coverage of BSC/PCF2, user MS1 accesses the group call, and user terminal MS1 has the right to speak, which is the speaker user.

When a call is set up, each base station subsystem first establishes a shared forward channel according to the instruction of the cluster switching center. The process of releasing the right to speak includes the following steps:

Step 401, the group call establishment process, MS1 has the right to speak;

This step is the process of establishing a group call, which is the establishment process in the prior art, and will not be repeated here. The user terminal MS1 has the right to speak.

In steps 402 to 403, MS1 sends a Floor Release message to BSC/PCF2, and BSC/PCF2 forwards the message to TSC;

User terminal MS1 releases the speaking right, sends a Floor Release message to TSC through BSC/PCF2, and notifies TSC to release the speaking right.

Step 404～step 406, TSC judges that user terminal MS1 can release the right to speak, TSC withdraws the right to speak, and sends Floor Idle message to all BSSs in this group call at the same time;

After receiving the right release message sent by the user terminal MS1, the TSC judges whether the user terminal MS1 can release the right to speak. Send a Floor Idle message to notify BSS1 and BSS2 that the current talk right is idle.

Step 407, BSC/PCF2 sends a Floor Idle message to the user terminal MS1 within its coverage through the shared forward channel;

After receiving the Floor Idle message, BSC/PCF2 sends a Floor Idle message through the shared forward channel to notify all user terminals within its coverage that the floor idle is currently idle.

Step 408, BSC/PCF1 sends a Floor Idle message to user terminals within its coverage area through the shared forward channel;

The realization of this step is identical with step 407, generates a Floor Idle message equally, sends by this shared forward channel, informs user terminal MS2, MS3 speaking right in its coverage area to be free, and MS2 and MS3 obtain this by this shared forward channel Message indicating that the current speaking state is idle.

From the above description, it can be seen that in the process of the user releasing the speaking right, the base station subsystem BSS only needs to send a speaking right idle message within its coverage area to notify all the user terminals of the current speaking right status by sharing the forward channel , instead of sending a talk right idle message for each user terminal, saving system resources.

As shown in Figure 5, it is a signaling flow chart for group call users to obtain speaking rights. In this process, the cluster switching control center TSC controls two base station subsystems BSS1 and BSS2, and the corresponding entities are BSC/PCF1 and BSC respectively /PCF2, where there are users MS2 and MS3 within the coverage of BSC/PCF1, and user MS1 within the coverage of BSC/PCF2; when the call is established, each base station subsystem first establishes according to the instructions of the trunking switching center For a shared forward channel, we assume that user terminal MS2 requests the right to speak, which specifically includes the following steps:

Step 501, the group call right is idle;

During a call, the speaking right is in an idle state, and all user terminals within the group call range can apply for the speaking right.

Steps 502 to 503, user MS2 initiates a speaking right request, sends a floor request message to BSC/PCF1, and BSC/PCF1 forwards the request message to the trunking switching center TSC;

The user terminal MS2 requests the speaking right, sends a Floor Request message to the TSC through MSC/PCF1, and notifies the trunking switching center TSC that the MS2 requests the speaking right, and the speaking right request message carries the identification of the user terminal MS2, such as IMSI, ESN, etc.

In steps 504 to 506, the TSC judges that the current speaking right is free and can be granted, and then sends a Floor Grant message to BSC/PCF1 and BSC/PCF2 to notify BSS1 and BSS2 of the current speaking right authorization.

After receiving the speaking right request message sent by the user terminal, the TSC judges whether the speaking right is currently idle. If yes, it judges whether the currently requesting user terminal can be granted the speaking right. Whether it can be granted the right to speak, if so, TSC allocates the right to speak, and constructs a Floor Grant message, which carries the identification of MS2 (such as IMSI, ESN, etc.), and sends the message to all BSSs in the group call.

Step 507, BSC/PCF2 sends a Floor Grant message to the user terminal MS1 within its coverage through the shared forward channel;

BSC/PCF2 receives the speaking right authorization message Floor Grant, sends a Floor Grant message through the shared forward channel, and notifies the user terminal MS1 within its coverage to grant the speaking right to user terminal MS2, and MS1 passes the shared forward channel, Obtain the identity of the user terminal that grants the speaking right, and compare it with its own identity. If the identity is different, the identity indicates that MS1 currently has the speaking right user as MS2.

Step 508, BSC/PCF1 sends a Floor Grant message to user terminals MS2 and MS3 within its coverage area through the shared forward channel;

Same as step 507, BSC/PCF1 constructs a Floor Grant message, sends it through the shared forward channel, and notifies the user terminal MS2 within its coverage, MS3 grants the speaking right to MS2, and MS2 obtains the authorization of the speaking right through the shared forward channel The ID of the user terminal is the same as its own ID, then MS2 has the right to speak and can initiate a speech.

It can be seen from the above description that in the process of the user requesting the right to speak, the base station subsystem BSS only needs to send a speech right authorization message within its coverage area to notify all user terminals of the current speech right authorization through the shared forward channel. State, instead of sending a speech authorization message for each user terminal, saving system resources.

The embodiment of the present invention also proposes a speech right control system, including a trunking switching center, a base station subsystem and a user terminal,

The trunking switching center is connected to at least one base station subsystem, and is used for processing the speech right control request message sent by the user terminal, and sending the speech right control message to each base station subsystem;

The base station subsystem is used to establish a shared forward channel, receive the speaking right control message sent by the trunking switching center, and send the speaking right control message to the user terminal through the shared forward channel.

At the same time, the trunking switching center judges the received speaking right control request message. When the speaking right control request message is a speaking right release message, the trunking switching center takes back the speaking right and sends a speech right idle message to the base station subsystem. message; when the speaking right control request message is a speaking right request message, the trunking switching center determines that the current speaking right is idle, and sends a speaking right authorization message to the base station subsystem.

The embodiment of the present invention proposes a speaking right control method and system. After receiving the speaking right control message, the base station subsystem broadcasts the speaking right message to all user terminals in the base station subsystem through the established shared forward channel, and only needs to send a The voice control message can notify all users of the current voice status, reduce the number of voice message transmissions, save channel occupation, and reduce the load of the forward channel. At the same time, all users can obtain the voice control from the shared forward channel at the same time. message, so that each user can receive the message of the right to speak at the same time, which optimizes the user experience.

It should be pointed out that the specific embodiments of the above-mentioned speech right control method and system are all described by taking the CDMA cluster as an example, but this does not constitute a limitation to the present invention. The present invention can also be applied to other cluster systems, such as GSM cluster systems Among them, when applied to a GSM cluster, the above-mentioned workflow and working principle remain unchanged, and those skilled in the art can implement the present invention without creative work.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. , Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A speaking right control method, characterized in that, comprising: The trunking switching center receives the speaking right control request message sent by the user terminal, processes the speaking right control request message, generates a speaking right control message, and sends the speaking right control message to the base station subsystem; The base station subsystem sends the speaking right control message to the user terminal through a shared forward channel. 2. The method according to claim 1, wherein before the cluster switching center receives the speaking right control request message sent by the user terminal, it further comprises: The base station subsystem establishes a shared forward channel. 3. The method according to claim 2, wherein when the speaking right control request message is a speaking right release message, the speaking right control message is a speaking right idle message, and the speaking right control message is sent The base station subsystem includes: The trunking switching center judges whether the current user terminal can release the speaking right, and if yes, the trunking switching center takes back the speaking right of the user terminal, and sends a speaking right idle message to the base station subsystem. 4. The method according to claim 2, wherein when the speaking right control request message is a speaking right request message, the speaking right control message is a speaking right authorization message, and the speaking right control message is sent to The base station subsystem includes: The trunking switching center determines that the current speaking right is free and can be granted, and then sends a speaking right authorization message to the base station subsystem, wherein the speaking right authorization message carries the identifier of the user terminal. 5. The method according to claim 4, further comprising: before sending the speaking right authorization message to the base station subsystem: The cluster switching center authenticates the user terminal requesting the speaking right. 6. The method of claim 4 or 5, further comprising, The user terminal receives the speaking right authorization message, and judges whether the user terminal identification carried in the speaking right authorization message is consistent with the user terminal's own identification; if they are consistent, the user terminal has the speaking right. 7. The method of claim 6, further comprising: When the user terminal identifier carried in the speaking right authorization message is inconsistent with the user terminal's own identifier, the user terminal is notified of the user terminal identifier carried in the speaking right authorization message, indicating the user who currently has the speaking right terminal. 8. The method according to any one of claims 1-5, wherein there are one or more base station subsystems. 9. A speaking right control system, characterized in that it comprises: The trunking switching center: receives the speaking right control request message sent by the user terminal, processes the speaking right control request message sent by the user terminal, generates a speaking right control message, and sends the speaking right control message to the base station subsystem; The base station subsystem: receives the speaking right control message sent by the trunking switching center, and sends the speaking right control message to the user terminal through the shared forward channel. 10. The system of claim 9, further comprising: When the trunking switching center receives the speaking right control request message as a speaking right release message, the trunking switching center withdraws the speaking right, and sends a speaking right idle message to the base station subsystem; When the cluster switching center receives the speaking right control request message as a speaking right request message, the cluster switching center judges whether the current speaking right is idle, and if so, sends a speaking right authorization message to the base station subsystem .