CN101984682A - Method and system for realizing cluster conversation in single-station mode - Google Patents
Method and system for realizing cluster conversation in single-station mode Download PDFInfo
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- CN101984682A CN101984682A CN2010105281380A CN201010528138A CN101984682A CN 101984682 A CN101984682 A CN 101984682A CN 2010105281380 A CN2010105281380 A CN 2010105281380A CN 201010528138 A CN201010528138 A CN 201010528138A CN 101984682 A CN101984682 A CN 101984682A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
- H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
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- H—ELECTRICITY
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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Abstract
The invention discloses a method for realizing a cluster conversation in a single-station mode, which comprises the following steps: a terminal establishes a self-created group, and a cluster conversation is realized on the basis of a system group or the self-created group according to the operating conditions of the system in a single-station mode. The invention also discloses a system for realizing a cluster conversation in a single-station mode. A selection unit for realizing a cluster conversation in the system is used for finishing the process that a terminal establishes a self-created group, and a cluster conversation is realized on the basis of a system group or the self-created group according to the operating conditions of the system in a single-station mode. By using the method and the system, the invention can still realize the cluster conversation among terminals in case of a system failure, thereby ensuring the cluster conversation quality among terminals in the digital cluster communication system and bringing favorable user experience to users.
Description
Technical field
The present invention relates to the digital cluster communication field, relate in particular under the pattern of a kind of single station by self-built group of method and system that realize the cluster conversation of terminal.
Background technology
Digital clustering communication system is the novel mobile communication system that rise at the twentieth century end.Digital clustering communication system belongs to dedicated mobile communications subsystem, and it is a kind of specific high level command dispatching system, and mobile communication service between individual and individual, individual and colony is provided.Cluster user can use baseset group business such as audio call, group calling, individual call, number demonstration, right of speech management, also can use additional group services such as Priority Call, high priority are seized, call blocking, group dynamic management, the access that lags, dispatching desk forced releasing and forced interposing.
Digital clustering communication system is made up of terminal, base station sub-system, scheduler subsystem etc.Terminal is mainly finished mutual with base station and user.Base station sub-system (BSS) is mainly finished group service, data service etc. by base station transceiver (BTS) and the common formation of base station controller (BSC).BTS finishes the modulation and demodulation of baseband signal, the transmission-receiving function of radiofrequency signal, and BSC then finishes all kinds of handoff functionalities of wireless resource allocation, call treatment, power control and support terminal.Scheduler subsystem is made up of dispatch server (PDS) and dispatching client (PDC), mainly finishes the management and the control of group service.PDS is the master control point of trunked call, finishes the processing of colony dispatching calling, comprises the discriminating cluster user, sets up various trunked calls, judges cluster PTT request etc.PDS also receives the colony-language data of reverse link as dispatch server, is distributed to corresponding forward link again according to the character of calling out.PDC is the speech data gateway that trunked call is linked into PDS, and reverse concentrated speech business stream is compiled, and forward direction cluster voice flow is distributed, and be established to the dedicated signaling link of PDS, transmits the signaling relevant with trunked call between BSC and PDS.
In order to guarantee that digital cluster system provides reliable business, need build a plurality of base stations, but in actual applications, require single base station and terminal to finish the cluster conversation jointly usually, be single station pattern at this moment, single station pattern is also referred to as fail soft mode.Adopt single station pattern, except consideration based on safety call, can also be when the physical link of system or net control device fault cause the cluster network paralysis, still can be for cluster user provide basic communication service, thus network physical link or equipment fault influence degree reduced to communication.Adopt the scene of single station pattern to comprise: confidentiality requires to cause the net control device fault and to cause the situation of cluster network paralysis than higher occasion, natural calamity or human factor.
Move under the pattern of single station, if system breaks down, such as the link down between BTS and BSC, BSC can't finish allocation of radio resources, call treatment reaches the various switchings with terminal, when PDS can't finish the right of speech management, since the group call that under the operational mode of single station, can only realize at present in the prior art setting up group by system, and the terminal that only successfully realizes group updating under system's normal running conditions just can be called out, therefore, in view of the mode of at present setting up group by system can't realize putting flexibly group under the pattern of single station, just can't set up and renewal group in case system breaks down, thereby the cluster that has influence on terminal room in the digital clustering communication system is conversed by system.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method and system that realize the cluster conversation under the pattern of a kind of single station, possesses washability, select in the time of breaking down in system to carry out the cluster conversation by self-built group of terminal, thereby still can realize the cluster conversation of terminal room during the system failure, thereby the cluster speech quality of terminal room in the assurance digital clustering communication system is for the user improves favorable user experience.
In order to achieve the above object, technical scheme of the present invention is achieved in that
Realize the method for cluster conversation under the pattern of a kind of single station, set up self-built group by terminal self, under the pattern of single station, selecting according to running situation is to realize the cluster conversation according to set of systems or according to self-built group.
Wherein, when described running situation is operate as normal, select to realize the cluster conversation according to described set of systems; When described running situation is fault, select to realize the cluster conversation according to described self-built group.
Wherein, this method also comprises: terminal judges according to the mode of operation field in the broadcast signaling message of base station transmission whether the current mode of operation in base station is described single station pattern;
Under the pattern of described single station, realize described cluster conversation, when terminal makes a call request to the base station, the type of the group that need judge makes a call asks and the index of group, the group of request is a set of systems if make a call, and then the group number unique identification (GID) according to the index correspondence of corresponding system group makes a call; The group of request is self-built group if make a call, and then the GID according to corresponding self-built group index correspondence makes a call.
Wherein, when described terminal made a call request to the base station, this method also comprised: the GID that carries group in the call request message;
GID is specified after receiving described call request in the base station in broadcast signaling message; Terminal receives that the GID in self-built group that described appointment GID is preserved with self after the broadcast signaling message compares, and when the described GID that specifies GID and preservation is identical, sets up the corresponding business channel and carries out group calling.
Wherein, this method also comprises: when terminal is initiated the speaking right request message, by described speaking right request message the Subscriber Number of saying of terminal is sent to the base station; The base station sends to terminal with right of speech message, and the Subscriber Number of saying that terminal will obtain from right of speech message shows.
Realize the system of cluster conversation under the pattern of a kind of single station, this system comprises: select to realize the cluster telephony unit, be used for setting up self-built group by terminal self, under the pattern of single station, selecting according to running situation is to realize the cluster conversation according to set of systems or according to self-built group.
Wherein, described selection realizes the cluster telephony unit, is further used for when described running situation is operate as normal, selects to realize the cluster conversation according to described set of systems; When described running situation is fault, select to realize the cluster conversation according to described self-built group.
Wherein, this system also comprises judging unit, is used for the mode of operation field of terminal according to the broadcast signaling message of base station transmission, judges whether the current mode of operation in base station is described single station pattern;
Described selection realizes the cluster telephony unit, be further used under the pattern of described single station, realizing described cluster conversation, when terminal makes a call request to the base station, the type of the group that need judge makes a call asks and the index of group, the group of request is a set of systems if make a call, and then the GID according to the index correspondence of corresponding system group makes a call; The group of request is self-built group if make a call, and then the GID according to corresponding self-built group index correspondence makes a call.
The present invention sets up self-built group by terminal self, and under the pattern of single station, selecting according to running situation is to realize the cluster conversation according to set of systems or according to self-built group.
Because the present invention is different from prior art, possesses washability, select in the time of breaking down in system to carry out the cluster conversation by self-built group of terminal, realized the system failure in the digital clustering communication system, during such as BTS and BSC link down (under the single base station), terminal is to the processing of self-built group of cluster conversation.
Description of drawings
Fig. 1 sets up the storage mode schematic diagram for self-built group of the present invention's;
Fig. 2 is by the self-built group of realization flow schematic diagram of realizing the cluster conversation under single station pattern of the embodiment of the invention one;
Fig. 3 is by the self-built group of realization flow schematic diagram of realizing the right to apply for words under single station pattern of the embodiment of the invention two.
Embodiment
Basic thought of the present invention is: set up self-built group by terminal self, under the pattern of single station, selecting according to running situation is to realize the cluster conversation according to set of systems or according to self-built group.
Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme.
Prior art and the present invention are done a contrast as can be known: prior art is to build group by system, just can't be set up and renewal group by system in case system breaks down, thereby the cluster that has influence on terminal room in the digital clustering communication system is conversed.And the solution of the present invention is a kind of scheme of being conversed by self-built group of realization of terminal cluster under the single base station operational mode, promptly break down in system, during such as BTS and BSC link down, the user can directly make a call to self-built group, utilize the base station to provide Communications service more easily separately to the user in its coverage, can not interrupt and have influence on the cluster conversation of terminal room, thereby guarantee the cluster speech quality of terminal room in the digital clustering communication system, for the user improves favorable user experience.And, for the CDMA trunked communication system, the group calling number and say Subscriber Number all on terminal directly storage system maintenance finish, do not need in the process of whole conversation to finish through BSC.
Realize the method for cluster conversation under the pattern of a kind of single station, mainly comprise following content:
Set up self-built group by terminal self, under the situation that is judged as single station pattern, selecting according to running situation is according to set of systems or the conversation of self-built group of realization cluster.
Here, when running situation is operate as normal, can select to realize the cluster conversation according to set of systems; When running situation is fault, can select to realize the cluster conversation according to self-built group.
Here, be different from the sets of numbers (GMDN) of being preserved terminal under the multistation mode of operation by PDS, the present invention singly no longer safeguards sets of numbers by PDS under the pattern of station, but by self-built group of terminal, and by the sets of numbers of oneself safeguarding in self-built group.Single contained fan is supported the group calling limitless volumes down, the user shares a voice channel in the group, directly distribute the cell channel resource by broadcast signaling message, when realizing the cluster conversation, saying the user and listening between the user and set up this voice channel, by saying this voice channel of CU, and listen the user to share this voice channel.
Further, this method also comprises: during self-built group of terminal, the user can own foundation group title and the number of group, terminal generates user's group number unique identification (GID) according to the number of group, so that finally realize the cluster conversation according to the pairing GID of self-built group.
Further, this method also comprises: terminal administers and maintains self-built group information voluntarily.Whether self-built group the information that terminal administers and maintains voluntarily comprises group identification information, group's priority, and waits for etc.That the user can carry out is newly-built, the operation of modification, deletion group.
Further, this method also comprises: the broadcast signaling message that terminal is sent according to the base station judges that the current mode of operation in base station is multistation pattern or single station pattern.Judging by the mode of operation field in the broadcast signaling message, is 0 such as the value of mode of operation field, and expression is in the multistation pattern; The value of mode of operation field is 1, and expression is in single station pattern.
Further, this method also comprises: if single station pattern, terminal is initiated group calling, the type of the group that judging makes a call asks and the index of group, the group of request is the set of systems that system sets up if make a call, and then the GID according to the index correspondence of corresponding system group makes a call; The group of request is self-built group that terminal is set up if make a call, and then the GID according to corresponding self-built group index correspondence makes a call.
Further, this method also comprises: under the pattern of single station, terminal is initiated set of systems or self-built group calls in several, carry respective sets GID in the call request message to the BTS request of making a call, after BTS receives this call request, under the voice channel of forward direction, send broadcast signaling message (being specially broadcast channel assigned message) and bring terminal, terminal is mated according to the GID that the GID in the broadcast signaling message carries out in the correspondence group, if the GID that is: in self-built group of the GID in the broadcast signaling message and terminal storage is identical, if it is identical, then set up the corresponding business channel, otherwise terminal will be left intact.
Further, this method also comprises: when terminal is initiated the speaking right request message, bring the base station by this speaking right request message with the Subscriber Number MDN that says of terminal, the base station sends to terminal by the voice channel of the forward direction shared with right of speech message.If terminal does not bring number of base stations, the base station will be to terminal band spacing sign indicating number, and terminal also can correctly show the right of speech state.Owing to say that the user takies a voice channel respectively, therefore, only support right of speech and say the demonstration of Subscriber Number, do not support right of speech preemption mechanism, normal voice calls and individual call.Say that the user can use right of speech to greatest extent, discharge up to oneself.Say that the user discharges right of speech, obtain right of speech and the power of loquituring to next user, the user says and is in the group calling Idle state.Wherein, described MDN is a Mobile Directory Number, and the full name of MDN is Mobile Directory Number.
Further, this method also comprises: the release flow process of calling is identical with original group calling release flow process.
In sum, compared with prior art, beneficial effect of the present invention is:
1, realized the system failure in the digital clustering communication system, during such as BTS and BSC link down, under the pattern of single station, terminal can self-built group and is selected processing to self-built group of cluster conversation, has solved to have only under system's normal running conditions by system to build the defective that the terminal of group and successful group updating just can be called out.
2, for digital clustering communication system, the group calling number and say Subscriber Number all on terminal directly storage system maintenance finish, do not need in the process of whole conversation to finish through BSC.
Below to the present invention's elaboration of giving an example.
Example: the schematic diagram of the upright storage mode of self-built establishment as shown in Figure 1, the present invention is by the existing systems group being expanded, being increased self-built group information.Attribute such as self-built group of information is the same with set of systems information to comprise group identification, group's priority, wait for.Then, the index and the type of set of systems and self-built group is saved in the new tabulation, the information of first saved system group in the new tabulation is preserved self-built group information again, and this new tabulation shows for UI to be used.
Under the multistation pattern, a new tabulation saved system group information, but under the pattern of single station, new tabulation is also preserved self-built group information except the information of saved system group.When carrying out mode switch, multistation pattern and single station pattern upgrade the information of this tabulation.Terminal is removed the information of this tabulation when start, when changing card, remove the information of all groups in addition, upgrades this tabulation.
Under the multistation pattern, when terminal is pressed next key assignment key (PTT), send group calling to the base station and set up request.The sub-district that database finds the group member place is searched in the base station after receiving that terminal group-calling is set up request, and to the corresponding BSC of this sub-district lock, each member initiates paging in group, and has type of call.The base station sends message on paging channel, terminal is carried out paging, and terminal is after receiving beep-page message, and respective handling is done in decoding, sends page-response message on access channel, sets up then and calls out.
Embodiment one: under the pattern of single station, realize the cluster conversation by self-built group of terminal.
As shown in Figure 2, the flow process of present embodiment comprises the steps:
Step 101, add set type group_type respectively in the structure of calling out, index field group_index is used for distinguishing the type and the index of the group that makes a call.
Whether step 102, the current mode of operation in terminal judges base station are single station pattern, if then execution in step 103; Otherwise, finish current by self-built group of flow process that realizes the cluster conversation of terminal.
Here, present embodiment increases the mode of operation field to existing systems parameter message (such as broadcast signaling message), length is 1 bit, in order to the work at present pattern of base station of expression digital cluster system, the value of mode of operation field is 0, and expression is in the multistation pattern; The value of mode of operation field is 1, and expression is in single station pattern.If be single station operational mode, then execution in step 103, otherwise, finish current by self-built group of flow process that realizes the cluster conversation of terminal.
Step 103, when the terminal that is in idle condition is pressed the PTT key, send call request message, in call request message, specify the information such as GID, terminal software version number of this group calling by access channel.Do not carry GMDN in this call request message, but carry GID.
After call request message is received in step 104, base station, send broadcast signaling message (broadcast signaling message is specially broadcast channel assigned message) at reverse voice channel; Terminal is received a piece of news at the voice channel of forward direction, judges whether this message is broadcast channel assigned message, if just the GID that the GID in the broadcast channel assigned message and terminal self are preserved carries out matching ratio, sees whether success of coupling.If the match is successful, then execution in step 105; Otherwise, finish current by self-built group of flow process that realizes the cluster conversation of terminal.
Step 105, terminal are directly set up respective channel, enter group calling.Do not need to shake hands and service negotiation with the base station signaling this moment, to improve the access and the switch speed of terminal.
Step 106, terminal say that the user passes through reverse voice channel and sends the speaking right request message, Electronic Serial Number (the ESN of carried terminal not, Electronic Serial Numbers) and Mobile Equipment Identifier (MEID MobileEquipmentIDentifier), but carries MDN.
Step 107, user receive the message of forward direction, obtain to say to show Subscriber Number.Afterwards, the terminal terminated call is identical with original flow process.
Embodiment two: under the pattern of single station, realize the right to apply for words by self-built group.
As shown in Figure 3, the flow process of present embodiment may further comprise the steps:
Step 201, terminal are initiated speaking right request message, the MDN of carried terminal in the speaking right request message.
Step 202, terminal are received the PTT message of forward direction, obtain MDN and MDN is shown.
In sum, by the foregoing description as can be known: the present invention sets up, administers and maintains self-built group information by terminal, under the pattern of single station, after terminal is received broadcast signaling message, determine current single station pattern that is, can select according to running situation is to carry out the cluster conversation according to set of systems or self-built group (when running situation is operate as normal, can select to carry out the cluster conversation according to set of systems; When running situation is fault, can select to carry out the cluster conversation) according to self-built group.When terminal makes a call when request to the base station, at first judge the type and the index of initiation request group, the information such as GID of acquisition request group, terminal is mated the GID information of the GID in the broadcast signaling message and self preservation, group calling is then set up in the success of GID information matches, otherwise process ends.When terminal is initiated the right to apply for words message, carried terminal information, the user obtains right of speech information, shows.
Realize the system of cluster conversation under the pattern of a kind of single station, this system comprises: select to realize the cluster telephony unit, be used for setting up self-built group by terminal self, under the pattern of single station, selecting according to running situation is to realize the cluster conversation according to set of systems or according to self-built group.
Here, select to realize that the cluster telephony unit is further used for when described running situation is operate as normal, select to realize the cluster conversation according to described set of systems; When described running situation is fault, select to realize the cluster conversation according to described self-built group.
Here, this system also comprises judging unit, is used for the mode of operation field of terminal according to the broadcast signaling message of base station transmission, judges whether the current mode of operation in base station is described single station pattern;
Described selection realizes the cluster telephony unit, be further used under the pattern of described single station, realizing described cluster conversation, when terminal makes a call request to the base station, the type of the group that need judge makes a call asks and the index of group, the group of request is a set of systems if make a call, and then the GID according to the index correspondence of corresponding system group makes a call; The group of request is self-built group if make a call, and then the GID according to corresponding self-built group index correspondence makes a call.
The above is the preferred embodiments of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (8)
1. realize the method that cluster is conversed under single station pattern, it is characterized in that, set up self-built group by terminal self, under the pattern of single station, selecting according to running situation is to realize the cluster conversation according to set of systems or according to self-built group.
2. method according to claim 1 is characterized in that, when described running situation is operate as normal, selects to realize the cluster conversation according to described set of systems; When described running situation is fault, select to realize the cluster conversation according to described self-built group.
3. method according to claim 2 is characterized in that, this method also comprises: terminal judges according to the mode of operation field in the broadcast signaling message of base station transmission whether the current mode of operation in base station is described single station pattern;
Under the pattern of described single station, realize described cluster conversation, when terminal makes a call request to the base station, the type of the group that need judge makes a call asks and the index of group, the group of request is a set of systems if make a call, and then the group number unique identification (GID) according to the index correspondence of corresponding system group makes a call; The group of request is self-built group if make a call, and then the GID according to corresponding self-built group index correspondence makes a call.
4. method according to claim 3 is characterized in that, when described terminal made a call request to the base station, this method also comprised: the GID that carries group in the call request message;
GID is specified after receiving described call request in the base station in broadcast signaling message; Terminal receives that the GID in self-built group that described appointment GID is preserved with self after the broadcast signaling message compares, and when the described GID that specifies GID and preservation is identical, sets up the corresponding business channel and carries out group calling.
5. according to each described method of claim 1 to 4, it is characterized in that this method also comprises: when terminal is initiated the speaking right request message, the Subscriber Number of saying of terminal is sent to the base station by described speaking right request message; The base station sends to terminal with right of speech message, and the Subscriber Number of saying that terminal will obtain from right of speech message shows.
6. realize the system that cluster is conversed under single station pattern, it is characterized in that this system comprises: select to realize the cluster telephony unit, be used for setting up self-built group by terminal self, under the pattern of single station, selecting according to running situation is to realize the cluster conversation according to set of systems or according to self-built group.
7. system according to claim 6 is characterized in that, described selection realizes the cluster telephony unit, is further used for when described running situation is operate as normal, selects to realize the cluster conversation according to described set of systems; When described running situation is fault, select to realize the cluster conversation according to described self-built group.
8. system according to claim 7 is characterized in that this system also comprises judging unit, is used for the mode of operation field of terminal according to the broadcast signaling message of base station transmission, judges whether the current mode of operation in base station is described single station pattern;
Described selection realizes the cluster telephony unit, be further used under the pattern of described single station, realizing described cluster conversation, when terminal makes a call request to the base station, the type of the group that need judge makes a call asks and the index of group, the group of request is a set of systems if make a call, and then the GID according to the index correspondence of corresponding system group makes a call; The group of request is self-built group if make a call, and then the GID according to corresponding self-built group index correspondence makes a call.
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| CN2010105281380A CN101984682A (en) | 2010-11-01 | 2010-11-01 | Method and system for realizing cluster conversation in single-station mode |
| PCT/CN2011/079191 WO2012058979A1 (en) | 2010-11-01 | 2011-08-31 | Method and system for achieving group call under single station mode |
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| WO2012058979A1 (en) * | 2010-11-01 | 2012-05-10 | 中兴通讯股份有限公司 | Method and system for achieving group call under single station mode |
| WO2014169569A1 (en) * | 2013-08-15 | 2014-10-23 | 中兴通讯股份有限公司 | Call service implementation method and device, and indication information delivery method and device |
| CN106792847A (en) * | 2016-12-05 | 2017-05-31 | 山东闻远通信技术有限公司 | Right of speech authorization method and system in a kind of distributed fault reduction cluster communication |
| CN106792846A (en) * | 2016-12-05 | 2017-05-31 | 山东闻远通信技术有限公司 | A kind of broadband cluster communication system that function is weakened with distributed fault |
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| CN110958649A (en) * | 2018-09-26 | 2020-04-03 | 成都鼎桥通信技术有限公司 | Reselection method, terminal and storage medium |
| CN111327667A (en) * | 2019-06-06 | 2020-06-23 | 杭州海康威视系统技术有限公司 | Multi-party talkback method, device and system and electronic equipment |
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| CN105163287A (en) * | 2015-09-14 | 2015-12-16 | 中国电子科技集团公司第七研究所 | Method for realizing provisional group call accession function in cluster communication system |
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Cited By (15)
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| WO2012058979A1 (en) * | 2010-11-01 | 2012-05-10 | 中兴通讯股份有限公司 | Method and system for achieving group call under single station mode |
| CN102123350A (en) * | 2011-03-23 | 2011-07-13 | 中兴通讯股份有限公司 | Method, terminal and system for realizing group calling in single station operating mode |
| WO2014169569A1 (en) * | 2013-08-15 | 2014-10-23 | 中兴通讯股份有限公司 | Call service implementation method and device, and indication information delivery method and device |
| CN104378742A (en) * | 2013-08-15 | 2015-02-25 | 中兴通讯股份有限公司 | Call service achieving method and device and indicating information issuing method and device |
| EP3035770A4 (en) * | 2013-08-15 | 2016-07-27 | Zte Corp | Call service implementation method and device, and indication information delivery method and device |
| CN106792846A (en) * | 2016-12-05 | 2017-05-31 | 山东闻远通信技术有限公司 | A kind of broadband cluster communication system that function is weakened with distributed fault |
| CN106792847A (en) * | 2016-12-05 | 2017-05-31 | 山东闻远通信技术有限公司 | Right of speech authorization method and system in a kind of distributed fault reduction cluster communication |
| CN106792847B (en) * | 2016-12-05 | 2021-03-16 | 山东闻远通信技术有限公司 | Speaking right authorization method and system in distributed fault weakening cluster communication |
| CN109429189A (en) * | 2017-07-07 | 2019-03-05 | 福建省万华电子科技有限公司 | Using the trunked communication system and cluster communication method of single base station multichannel cluster communication agreement |
| CN109429189B (en) * | 2017-07-07 | 2023-11-07 | 福建省万华电子科技有限公司 | Cluster communication system and cluster communication method adopting single-base station multi-channel cluster communication protocol |
| CN110839212A (en) * | 2018-08-16 | 2020-02-25 | 上海霹迪梯通讯科技有限公司 | Communication method of TETRA digital trunking system and related products thereof |
| CN110958649A (en) * | 2018-09-26 | 2020-04-03 | 成都鼎桥通信技术有限公司 | Reselection method, terminal and storage medium |
| CN110958649B (en) * | 2018-09-26 | 2021-12-21 | 成都鼎桥通信技术有限公司 | Reselection method, terminal and storage medium |
| CN111327667A (en) * | 2019-06-06 | 2020-06-23 | 杭州海康威视系统技术有限公司 | Multi-party talkback method, device and system and electronic equipment |
| CN111327667B (en) * | 2019-06-06 | 2022-06-03 | 杭州海康威视系统技术有限公司 | Multi-party talkback method, device and system and electronic equipment |
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| WO2012058979A1 (en) | 2012-05-10 |
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