WO2012058979A1

WO2012058979A1 - Method and system for achieving group call under single station mode

Info

Publication number: WO2012058979A1
Application number: PCT/CN2011/079191
Authority: WO
Inventors: 刘晓静; 曾稹卓
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-01
Filing date: 2011-08-31
Publication date: 2012-05-10
Also published as: CN101984682A

Abstract

Disclosed is a method for achieving a group call under a single station mode. The method includes: establishing a self-established group by a terminal itself, and choosing to achieve a group call according to a system group or the self-established group under the single station mode according to the operating conditions of the system. Also disclosed is a system for achieving a group call under a single station mode. A unit for choosing to achieve a group call in the system is used for establishing a self-established group by a terminal itself, and chooses to achieve the group call according to a system group or the self-established group under the single station mode according to the operating conditions of the system. By way of the method and system in the present invention, group calls among terminals can still be achieved when any failures occur in the system, thereby ensuring the quality of group calls among terminals in digital group communication systems, and providing a better user experience to the user.

Description

Method and system for realizing cluster call in single station mode

The present invention relates to the field of digital trunking communications, and in particular, to a method and system for implementing a trunk call by a terminal self-built group in a single station mode. Background technique

Digital trunking communication system is a new type of mobile communication system that emerged at the end of the 20th century. The digital trunking communication system is a dedicated mobile communication system. It is a dedicated advanced command and dispatch system that provides mobile communication services between individuals and individuals, individuals and groups. The cluster user can use basic trunking services such as voice call, group call, private call, number display, and call rights management. It can also use priority call, high priority preemption, call restriction, group dynamic management, late access, and dispatcher demolitions. Intensive plug-in and other supplementary cluster services.

The digital trunking communication system is composed of a terminal, a base station subsystem, a scheduling subsystem, and the like. The terminal mainly completes interaction with the base station and the user. The base station subsystem (BSS) is composed of a base transceiver station (BTS) and a base station controller (BSC), and mainly performs cluster services, data services, and the like. The BTS completes the modulation and demodulation of the baseband signal and the function of transmitting and receiving the radio frequency signal. The BSC performs radio resource allocation, call processing, power control, and various switching functions of the supporting terminal. The scheduling subsystem consists of a scheduling server (PDS) and a scheduling client (PDC), which mainly manages and controls the cluster services. The PDS is the total control point of the trunk call, and completes the processing of the cluster dispatch call, including identifying the cluster user, establishing various cluster calls, and determining the cluster one-touch call button (PTT) request. As a scheduling server, the PDS also receives cluster language data from the reverse link and redistributes it to the corresponding forward link according to the nature of the call. The PDC is a voice data gateway that accesses the cluster call to the PDS, collects the reverse cluster voice service flow, distributes the forward cluster voice stream, and establishes a dedicated signaling link to the PDS, and transmits between the BSC and the PDS. Signaling related to trunking calls. In order to ensure that the digital trunking system provides reliable services, multiple base stations need to be set up. However, in practical applications, a single base station and a terminal are required to complete the trunking call together. In this case, the single-station mode is also called the fault-attenuation mode. In single-station mode, in addition to the security call-based considerations, it is still possible to provide basic communication services for cluster users when the physical link of the system or the network control device fails to cause the cluster network, thereby reducing the physical link of the network. Or the extent to which equipment failure affects communication. The scenario of using the single-station mode includes: situations where the confidentiality requirement is relatively high, natural disasters or human factors cause the network control device to malfunction and the cluster network is paralyzed.

In single-station mode, if the system fails, for example, the link between the BTS and the BSC is interrupted, the BSC cannot complete the radio resource allocation, call processing, and various handovers with the terminal. When the PDS cannot complete the call rights management, due to the prior art In the single station operation mode, only the system group call of the group established by the system can be realized at present, and only the terminal that successfully implements the group update under the normal working condition of the system can make the call, therefore, in view of the current establishment of the group by the system The mode cannot be flexibly released in the single station mode. Once the system fails, the system cannot establish and update the group, which affects the cluster call between the terminals in the digital trunking communication system. Summary of the invention

In view of this, the main purpose of the present invention is to provide a method and system for implementing a trunk call in a single-station mode, which is optional, and can select a self-built group to perform a cluster call when the system is faulty, thereby causing a system failure. The cluster call between the terminals can still be realized, thereby ensuring the quality of the cluster call between the terminals in the digital trunking communication system, and improving the user experience for the user.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A method for implementing a trunk call in a single-station mode is to establish a self-built group by the terminal itself. In the single-station mode, whether the cluster call is implemented according to the system group or the self-built group according to the system operation.

Wherein, when the operating condition of the system is normal, the selection is implemented according to the system group When the system is running, the cluster call is selected according to the self-built group.

The method further includes: determining, according to a working mode field in the broadcast signaling message sent by the base station, whether the current working mode of the base station is the single station mode;

In the single-station mode, the cluster call is implemented. When the terminal initiates a call request to the base station, the terminal needs to determine the type of the group that initiates the call request and the index of the group. If the group that initiates the call request is a system group, according to the corresponding system group. The group ID unique identifier (GID) corresponding to the index initiates a call; if the group that initiates the call request is a self-built group, the call is initiated according to the GID corresponding to the index of the corresponding self-built group.

When the terminal initiates a call request to the base station, the method further includes: carrying the GID of the group in the call request message;

After receiving the call request, the base station specifies the GID in the broadcast signaling message; after receiving the broadcast signaling message, the terminal compares the specified GID with the GID in the self-built group saved by itself, when the specified GID and saves When the GIDs are the same, a corresponding traffic channel is established for group call.

The method further includes: when the terminal initiates the speaking right request message, sending the speaking user number of the terminal to the base station by using the speaking right request message; the base station sends the right message to the terminal, and the terminal obtains the message from the right message The user number is displayed.

A system for implementing a trunk call in a single station mode, the system comprising: selecting a cluster call unit for establishing a self-built group by the terminal itself, in the single station mode, selecting according to the system operation according to the system group or according to the self Establish a group to implement a cluster call.

The selecting a cluster call unit is further configured to: when the system running condition is normal, selecting to implement a cluster call according to the system group; when the system running condition is a fault, selecting to self-build according to the The group implements a cluster call.

The system further includes a determining unit, configured to determine, according to a working mode field in the broadcast signaling message sent by the base station, whether the current working mode of the base station is the single station mode; The selecting implements the trunking unit, and is further configured to implement the trunking call in the single-station mode. When the terminal initiates a call request to the base station, it is required to determine the type of the group that initiates the call request and the index of the group, if the call request is initiated. If the group is a system group, the call is initiated according to the GID corresponding to the index of the corresponding system group. If the group that initiates the call request is a self-built group, the call is initiated according to the GID corresponding to the index of the corresponding self-built group.

The invention establishes a self-built group by the terminal itself, and in the single station mode, according to the system operation situation, whether the cluster call is implemented according to the system group or the self-built group.

Since the present invention is different from the prior art, it is optional, and can select a trunking call by the terminal self-built group when the system is faulty, thereby realizing system failure in the digital trunking communication system, for example, when the BTS and the BSC link are interrupted (single Under the base station), the terminal handles the self-built group trunk call. DRAWINGS

1 is a schematic diagram of establishing a storage mode of a self-built group according to the present invention;

2 is a schematic flowchart of implementing a trunk call by a self-built group in a single station mode according to Embodiment 1 of the present invention;

FIG. 3 is a schematic flowchart of implementing a call right application by a self-built group in a single station mode according to Embodiment 2 of the present invention. detailed description

The basic idea of the present invention is: The self-built group is established by the terminal itself. In the single-station mode, whether the system calls or the self-built group is used to implement the cluster call according to the system operation.

The implementation of the technical solution will be further described in detail below with reference to the accompanying drawings.

Comparing the prior art with the present invention, it can be seen that the prior art is built by the system. Once the system fails, the group cannot be established and updated by the system, thereby affecting the cluster call between the terminals in the digital trunking communication system. The solution of the present invention is a scheme for implementing a trunk call by a terminal self-built group in a single base station operation mode, that is, a system failure, such as a BTS and a BSC link. When interrupted, the user can directly initiate a call to the self-built group, and use the base station alone to provide more convenient communication services for users within its coverage, without interrupting and affecting the cluster call between the terminals, thereby ensuring the terminal in the digital trunking communication system. The quality of inter-cluster calls improves the user experience for users. Moreover, for the CDMA trunking communication system, the group call number and the speaking user number are directly stored and maintained on the terminal, and the entire call does not need to be completed by the BSC.

A method for implementing a trunk call in a single station mode, which mainly includes the following contents:

The self-built group is established by the terminal itself. When it is judged to be the single-station mode, the cluster call is selected according to the system group or the self-built group according to the system operation.

Here, when the system is running normally, you can choose to implement the cluster call according to the system group. When the system is running, you can choose to implement the cluster call according to the self-built group.

Here, the group number (GMDN) of the terminal is saved by the PDS in the multi-station working mode. In the single station mode of the present invention, the group number is no longer maintained by the PDS, but the terminal self-builds the group, and the self-built group is maintained by itself. The group number in . The single-carrier fan supports the unlimited capacity of the group, and the users in the group share a voice channel, and directly allocate the cell channel resources through the broadcast signaling message. When the cluster call is realized, the voice channel is established between the user and the listening user. The user occupies the voice channel, and the user listens to the voice channel.

Further, the method further includes: when the terminal self-builds the group, the user can establish the name of the group and the group number by itself, and the terminal generates the group ID unique identifier (GID) of the user according to the group number, so as to finally obtain the group according to the self-built group. The corresponding GID implements a trunk call.

Further, the method further includes: the terminal automatically managing and maintaining the information of the self-built group. The information of the self-built group managed and maintained by the terminal, including group identification information, group priority, and waiting. Users can create, modify, and delete groups.

Further, the method further includes: determining, by the terminal according to the broadcast signaling message sent by the base station, whether the current working mode of the base station is a multi-station mode or a single-station mode. Judging by the working mode field in the broadcast signaling message, for example, the value of the working mode field is 0, indicating that it is in the multi-station mode; The value of the mode field is 1, indicating that it is in single station mode.

Further, the method further includes: if it is a single station mode, the terminal initiates a group call, and determines a type of the group that initiates the call request and an index of the group. If the group that initiates the call request is a system group established by the system, according to the corresponding system group The GID corresponding to the index initiates a call; if the group that initiates the call request is a self-built group established by the terminal, the call is initiated according to the GID corresponding to the index of the corresponding self-built group.

Further, the method further includes: in the single station mode, the terminal initiates a system group or a self-built group call, and the call request message carries a corresponding group GID to initiate a call request to the BTS, and after receiving the call request, the BTS is forward. A broadcast signaling message (specifically, a broadcast channel assignment message) is sent to the terminal, and the terminal performs GID matching in the corresponding group according to the GID in the broadcast signaling message, that is, determining the GID in the broadcast signaling message. Whether the GID in the self-built group stored in the terminal is the same. If they are the same, the corresponding traffic channel is established. Otherwise, the terminal will not do any processing.

Further, the method further includes: when the terminal initiates the speaking right request message, the terminal user number MDN is brought to the base station by using the speaking right request message, and the base station sends the right message to the terminal by using the shared forward voice channel. If the terminal does not bring the base station number, the base station will give the terminal an empty number, and the terminal can correctly display the right state. Since the user occupies a separate voice channel, only the voice rights and the user number display are supported, and the voice preemption mechanism, the normal voice call, and the private call are not supported. Speaking of the user can maximize the use of the right to speak until they release. The user is told to release the call right, and the next user gets the right to speak and starts speaking. The user speaks the group call idle state. The MDN is a mobile phone number, and the MDN is called a Mobile Directory Number.

Further, the method further includes: the release process of the call is the same as the original group call release process. In summary, compared with the prior art, the beneficial effects of the present invention are:

1. Realize system failure in the digital trunking communication system. For example, when the BTS and BSC links are interrupted, in the single-station mode, the terminal can self-build the group and select the processing of the self-built group trunk call. Only the terminal that is established by the system under normal working conditions and successfully updated by the group can make a call defect.

2. For the digital trunking communication system, the group call number and the speaking user number are directly stored and maintained on the terminal, and the entire call does not need to be completed by the BSC.

The invention is illustrated by way of example below.

Example: A schematic diagram of establishing a storage mode for a self-built group is shown in Fig. 1. The present invention expands the existing system group to increase the information of the self-built group. Self-built group information is the same as system group information, including group identification, group priority, and waiting attributes. Then, save the index and type of the system group and the self-built group to a new list. The new list first saves the information of the system group, and then saves the information of the self-built group. This new list is used by the UI display.

In multi-station mode, the new list only saves system group information, but in single-station mode, the new list saves the information of the self-built group in addition to the information of the system group. Update the information of this list when mode switching is performed in multi-station mode and single-station mode. When the terminal is powered on, the information of this list is cleared, and when the card is changed, the information of all groups is cleared, and the list is updated.

In the multi-station mode, when the terminal presses the PTT, it sends a group call setup request to the base station. After receiving the terminal group call setup request, the base station finds the cell where the member in the group is located by searching the database, and initiates paging to the members in the group with the call type. The base station sends a message on the paging channel to page the terminal. After receiving the paging message, the terminal decodes and performs corresponding processing, sends a paging response message on the access channel, and then establishes a call.

Embodiment 1: In the single station mode, the terminal self-built group realizes the cluster call.

As shown in FIG. 2, the process of this embodiment includes the following steps:

Step 101: Add a group type group_type and an index field group_index respectively in the structure of the call to distinguish the type and index of the group that initiated the call.

Step 102: The terminal determines whether the current working mode of the base station is a single station mode. If yes, step 103 is performed; otherwise, the process of implementing the cluster call by the terminal self-building group is ended. Here, in this embodiment, the existing system parameter message (such as a broadcast signaling message) is added with a working mode field, and the length is 1 bit, which is used to indicate the current working mode of the base station of the digital trunking system, and the value of the working mode field is 0, indicating that it is in multi-station mode; the value of the work mode field is 1, indicating that it is in single-station mode. If it is in the single station mode, step 103 is performed. Otherwise, the process of implementing the cluster call by the terminal self-building group is ended.

Step 103: When the terminal in the idle state presses the PTT button, the call request message is sent through the access channel, and the GID of the group call, the version number of the terminal software, and the like are specified in the call request message. The call request message does not carry the GMDN, but carries the GID.

Step 104: After receiving the call request message, the base station sends a broadcast signaling message on the reverse voice channel (the broadcast signaling message may be a broadcast channel assignment message); the terminal receives a message on the forward voice channel, and determines Whether the message is a broadcast channel assignment message, if yes, the GID in the broadcast channel assignment message is compared with the GID saved by the terminal itself to see if the match is successful. If the matching is successful, step 105 is performed; otherwise, the process of implementing the cluster call by the terminal self-building group is ended.

Step 105: The terminal directly establishes a corresponding channel, and enters the group call. At this time, there is no need for handshake and service negotiation with the base station to improve the access and handover speed of the terminal.

Step 106: The terminal speaks that the user sends a speech right request message through the reverse voice channel, does not carry the electronic serial number (ESN, Electronic Serial Numbers) and the mobile equipment identifier (MEID, Mobile Equipment IDentifier) of the terminal, but carries the MDN.

Step 107: The user receives the forward message, obtains the speaking user number, and performs display. After that, the terminal ends the call, which is the same as the original process.

Embodiment 2: In the single station mode, the call right application is implemented by the self-built group.

As shown in FIG. 3, the process of this embodiment includes the following steps:

Step 201: The terminal initiates a speech right request message, where the speech right request message carries the MDN of the terminal. Step 202: The terminal receives the forward PTT message, obtains the MDN, and displays the MDN. In summary, the above embodiments show that: The present invention mainly establishes, manages, and maintains information of a self-built group by a terminal. In a single-station mode, after receiving a broadcast signaling message, the terminal determines that the current mode is a single station mode. You can choose whether to perform a cluster call based on the system group or the self-built group. (When the system is running normally, you can choose to perform cluster calls based on the system group. When the system is faulty, you can choose to use the self-built group. Make a cluster call). When the terminal initiates a call request to the base station, it first determines the type and index of the requesting group, obtains the GID of the request group, and the like, and the terminal matches the GID in the broadcast signaling message with the GID information saved by itself, and the GID information is successfully matched. Create a group call, otherwise end the process. When the terminal initiates a call request message, the terminal carries the terminal information, and the user obtains the right message information and displays it.

Here, the selecting and implementing the cluster call unit is further configured to: when the system running condition is normal working, selecting to implement a cluster call according to the system group; when the system running condition is a fault, selecting to implement the cluster according to the self-built group call.

Here, the system further includes a determining unit, configured to determine, according to a working mode field in the broadcast signaling message sent by the base station, whether the current working mode of the base station is the single station mode; In the single-station mode, the cluster call is implemented. When the terminal initiates a call request to the base station, it is required to determine the type of the group that initiates the call request and the index of the group. If the group that initiates the call request is a system group, according to the corresponding system. The GID corresponding to the index of the group initiates a call; if the group that initiates the call request is a self-built group, the call is initiated according to the GID corresponding to the index of the corresponding self-built group.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Industrial applicability

The basic idea of the present invention is: The self-built group is established by the terminal itself. In the single-station mode, whether the system calls or the self-built group is used to implement the cluster call according to the system operation. In summary, the solution provided by the present invention can:

1. Realize system failure in the digital trunking communication system. For example, when the BTS and BSC links are interrupted, in the single-station mode, the terminal can self-build the group and select the processing of the self-built group trunk call, which solves only the normal working conditions of the system. The defect that the terminal established by the system and successfully updated by the group can make a call.

Claims

Claim

A method for implementing a trunk call in a single-station mode, comprising: establishing a self-built group by the terminal itself, and in a single-station mode, selecting whether to perform a cluster call according to the system group or the self-built group according to the system operation condition.

2. The method according to claim 1, wherein, when the operating condition of the system is normal, selecting to implement a trunking call according to the system group; when the operating condition of the system is a fault, selecting to self-build according to the method The group implements a cluster call.

The method according to claim 2, wherein the method further comprises: determining, by the terminal according to the working mode field in the broadcast signaling message sent by the base station, whether the current working mode of the base station is the single station mode;

In the single-station mode, the cluster call is implemented. When the terminal initiates a call request to the base station, the terminal determines the type of the group that initiates the call request and the index of the group. If the group that initiates the call request is a system group, according to the corresponding system group. The group number unique identifier (GID) corresponding to the index initiates a call; if the group that initiates the call request is a self-built group, the call is initiated according to the GID corresponding to the index of the corresponding self-built group.

The method according to claim 3, wherein, when the terminal initiates a call request to the base station, the method further includes: carrying a GID of the group in the call request message;

The method according to any one of claims 1 to 4, wherein the method further comprises: when the terminal initiates the speaking right request message, transmitting the speaking user number of the terminal to the base station by using the speaking right request message; The message is sent to the terminal, and the terminal displays the speaking number obtained from the right message.

6. A system for implementing a trunk call in a single station mode, comprising: selecting a cluster call list Element, used to establish a self-built group by the terminal itself. In single-station mode, according to the system operation, choose whether to implement the cluster call according to the system group or the self-built group.

The system according to claim 6, wherein the selecting implements a trunking unit, and further, when the system is in a normal working state, selecting to implement a trunking call according to the system group; when the system is running When the situation is faulty, choose to implement the cluster call according to the self-built group.

The system according to claim 6 or 7, wherein the system further comprises a determining unit, configured to determine, according to a working mode field in the broadcast signaling message sent by the base station, whether the current working mode of the base station is the single Station mode

The selecting implements the trunking unit, and is further configured to implement the trunking call in the single-station mode, and when the terminal initiates a call request to the base station, determine the type of the group that initiates the call request and the index of the group, if the call request is initiated. If the group is a system group, the call is initiated according to the GID corresponding to the index of the corresponding system group. If the group that initiates the call request is a self-built group, the call is initiated according to the GID corresponding to the index of the corresponding self-built group.