CN101784123A - Trunking terminal, call establishment method, system and base station subsystem - Google Patents

Trunking terminal, call establishment method, system and base station subsystem Download PDF

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Publication number
CN101784123A
CN101784123A CN 200910005227 CN200910005227A CN101784123A CN 101784123 A CN101784123 A CN 101784123A CN 200910005227 CN200910005227 CN 200910005227 CN 200910005227 A CN200910005227 A CN 200910005227A CN 101784123 A CN101784123 A CN 101784123A
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China
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colony terminal
call
information
base station
message
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CN 200910005227
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Chinese (zh)
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CN101784123B (en
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姚超
白炜
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中兴通讯股份有限公司
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Abstract

The invention discloses a trunking terminal, a call establishment method, a system and a base station subsystem. The method comprises the following steps that a scheduling service subsystem sends a call establishment command to the base station subsystem after receiving call request information sent by the trunking terminal via the base station subsystem, wherein the call establishment command carries information related to call establishment and the call authority information of the trunking terminal; and the base station subsystem establishes service channel resources based on the call establishment command and sends a comprehensive assignment message to the trunking terminal, wherein the comprehensive assignment message comprises the information of a established service channel and the call authority information. By the technical scheme, the invention can reduce the interaction with the terminal and lower the probability of the information loss, thereby improving the call success rate of the terminal.

Description

Colony terminal and call-establishing method thereof, system and base station sub-system

Technical field

The present invention relates to the communications field, and especially, relate to a kind of colony terminal and call-establishing method thereof, system and base station sub-system.

Background technology

At present, because the fast development of mechanics of communication, the user no longer is satisfied with the simulation Clustering of current widespread usage, is had higher requirement in aspects such as the high security of colony terminal, flexible grouping, lamprophonia, perfect in shape and function.So the Digital Clustering technology is arisen at the historic moment, every function of Digital Clustering technology and its implementation also become the emphasis of research and development simultaneously.

In correlation technique, existing code division multiple access inserts (Code Division MultipleAccess, abbreviate CDMA as) when mode cluster system is set up a calling, need use primary channel and complement channel simultaneously, when every kind of channel foundation is finished, all need to send corresponding assignment message notice terminal, and transmission authorization messages notice terminal begins speech.Fig. 1 is the signaling process figure of group system call setup in the correlation technique, and as shown in Figure 1, the call setup of existing group system mainly comprises following processing (step S101-step S108):

Step S101, terminal (travelling carriage) request of making a call, Fig. 2 is the structural representation of digital aggregated communication system in the correlation technique, as shown in Figure 2, after the Mobile Origination call request, this call request is by base station sub-system (Base Station SubSystem, abbreviate BSS as) arrival dispatch service subsystem (Dispatching Server SubSystem, abbreviate DSS as), as can be seen from Figure 2, by air interface (Um) command transmitting, BSS and DSS are undertaken alternately by the A interface between Access Network and the core net between travelling carriage and the BSS;

Step S102, DSS notice BSS begins to set up calling;

Step S103, the BSS allocation of channel resources may is set up required Traffic Channel, and wherein, Traffic Channel comprises: primary channel and complement channel;

Step S104, BSS sends Extended Channel Assignment Message (ExtendedChannel Assignment Message abbreviates ECAM as) to terminal, the relevant information of notice terminal primary channel;

Step S105, terminal changes Traffic Channel over to, brings into use primary channel;

Step S106, BSS sends Extended Supplemental Channel Assignment Message (Extended Supplemental Channel Assignment Message at primary channel to terminal, abbreviate ESCAM as), notice terminal complement channel relevant information, terminal is brought into use complement channel;

Step S107, BSS finishes message to the DSS callback setting up;

Step S108, DSS sends authorization messages to terminal, and terminal begins conversation.

From above-mentioned processing as can be seen, in step S104, step S106, step S108, all need to send message, and any a piece of news is made mistakes and all can be caused this call failure, thereby influence the call successful rate of terminal to terminal.

Summary of the invention

Consider in the correlation technique when the group system call setup and terminal is carried out repeatedly mutual and problem that call successful rate that cause is low and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of improved colony terminal call setup scheme, to solve the problems referred to above of existing in the correlation technique one of at least.

To achieve these goals, according to an aspect of the present invention, provide a kind of colony terminal call-establishing method.

Colony terminal call-establishing method according to the present invention comprises: after the dispatch service subsystem receives the call request message of colony terminal by the base station sub-system transmission, set up call command to the base station sub-system transmission, wherein, set up and carry the relevant information of set up calling out and the right of speech information of colony terminal in the call command; Base station sub-system is set up traffic channel resource according to setting up call command, and sends comprehensive assignment message to colony terminal, and wherein, the information that comprehensive assignment message carries comprises: the information of the Traffic Channel of foundation and described right of speech information.

In addition, the dispatch service subsystem to base station sub-system send set up call command before, also comprise: the dispatch service subsystem according to the state of colony terminal and and described colony terminal under the state of group determine the authorization message and the right of speech state of colony terminal, and according to authorization message and right of speech state generation right of speech information, wherein, right of speech information comprises: authorization message, right of speech state.

In addition, according to setting up after call command sets up traffic channel resource, also comprise: base station sub-system sends to set up to the dispatch service subsystem finishes message in base station sub-system.

In addition,, also comprise after colony terminal sends comprehensive assignment message in base station sub-system: colony terminal changes the corresponding business channel over to according to comprehensive assignment message.

To achieve these goals, according to a further aspect in the invention, provide a kind of colony terminal call set-up systems, comprised colony terminal, dispatch service subsystem, base station sub-system.

Colony terminal call set-up systems according to the present invention comprises: colony terminal is used for sending call request message by base station sub-system to the dispatch service subsystem; The dispatch service subsystem comprises: receiver module is used to receive the call request message that colony terminal sends; First sending module is used for sending to base station sub-system and sets up call command, wherein, sets up and carries the relevant information of calling out and the right of speech information of colony terminal set up in the call command; Base station sub-system comprises: set up module, be used for setting up traffic channel resource according to setting up call command; Second sending module is used for sending comprehensive assignment message to colony terminal, and wherein, the information that comprehensive assignment message carries comprises: the information of the Traffic Channel of foundation and right of speech information.

In addition, the dispatch service subsystem further comprises: determination module is used for determining according to the state of group under the state of colony terminal and the described colony terminal authorization message and the right of speech state of colony terminal; Generation module is used for generating right of speech information according to authorization message and right of speech state, and wherein, right of speech information comprises: authorization message, right of speech state.

In addition, base station sub-system further comprises: the 3rd sending module is used for sending foundation to the dispatch service subsystem and finishes message.

In addition, colony terminal further comprises: change module over to, be used for changing the corresponding business channel over to according to comprehensive assignment message.

To achieve these goals, in accordance with a further aspect of the present invention, provide a kind of colony terminal.

Colony terminal according to the present invention comprises: sending module is used for sending call request message by base station sub-system to the dispatch service subsystem; Change module over to, be used for changing the corresponding business channel over to according to the comprehensive assignment message that base station sub-system sends, wherein, comprehensive assignment message comprises: the information of the Traffic Channel of foundation and right of speech information.

To achieve these goals, in accordance with a further aspect of the present invention, provide a kind of base station sub-system.

Base station sub-system according to the present invention comprises: receiver module, and be used for the receiving scheduling service subsystem and send and to set up call command, wherein, set up and carry the relevant information of calling out and the right of speech information of colony terminal set up in the call command; Set up module, be used for setting up traffic channel resource according to setting up call command; Sending module is used for sending comprehensive assignment message to colony terminal, and wherein, the information that comprehensive assignment message carries comprises: the information of the Traffic Channel of foundation and right of speech information.

By means of technical scheme of the present invention, by after all setting up at required channel resource traffic channel information and the right of speech information of being set up being sent to terminal by an assignment message, solved in the correlation technique when the group system call setup and terminal is carried out repeatedly mutual and the low problem of call successful rate that cause, can reduce mutual with terminal, reduce the probability that interaction message is lost, thereby improve the colony terminal call successful rate.

Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.

Description of drawings

Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is the signaling process figure of group system call setup in the correlation technique;

Fig. 2 is the structural representation of digital aggregated communication system in the correlation technique;

Fig. 3 is the flow chart according to the colony terminal call-establishing method of the embodiment of the invention;

Fig. 4 is the signaling process figure according to the colony terminal call-establishing method detailed process of the embodiment of the invention;

Fig. 5 is the schematic diagram according to the comprehensive assignment message structure of the embodiment of the invention;

Fig. 6 is the block diagram according to the colony terminal call set-up systems of the embodiment of the invention;

Fig. 7 is the block diagram according to the colony terminal of the embodiment of the invention;

Fig. 8 is the block diagram according to the base station sub-system of the embodiment of the invention.

Embodiment

Functional overview

In correlation technique, during the group system call setup, need alternately (for example carry out repeatedly with terminal, after sending Extended Channel Assignment Message to terminal, also need to send Extended Supplemental Channel Assignment Message and right of speech message) to terminal, therefore, very rate is low can to cause the access success of terminal, for this reason, the invention provides a kind of by reducing the scheme that service provisioning message promotes the terminal call success rate, in technical scheme of the present invention, colony terminal sends call request message by BSS to DSS; DSS sends to BSS and sets up call command, and carries the relevant information of foundation calling and the right of speech information of colony terminal in setting up call command; BSS sets up traffic channel resource according to setting up call command, sends to set up to DSS and finishes message, and send comprehensive assignment message to colony terminal, wherein, carries in the comprehensive assignment message: the traffic channel information of being set up, and right of speech information.

Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.

In the following description, for the purpose of explaining, a plurality of specific details have been described, to provide to thorough of the present invention.Yet, obviously, do not having can to realize the present invention under the situation of these specific detail yet, in addition, under the situation that does not deviate from the spirit and scope that claims illustrate, among following embodiment and the embodiment each details can be carried out various combinations.

Method embodiment

According to embodiments of the invention, a kind of colony terminal call-establishing method is provided, Fig. 3 is the flow chart according to the colony terminal call-establishing method of the embodiment of the invention, as shown in Figure 3, comprises following processing (step S302-step S308):

Step S302, colony terminal sends call request message by air interface to BSS, after BSS receives this message, transmits this call request message by the A interface to DSS;

Step S304, after DSS receives call request message, at first according to its local that preserve and the corresponding information of this colony terminal, and the group's state under the state of colony terminal and this colony terminal is determined the authorization message and the right of speech state of colony terminal, and generate corresponding right of speech information according to authorization message and right of speech state, after having generated right of speech information, DSS just can send to BSS and set up call command, BSS can set up calling with notice, and in setting up call command, carry the relevant information of set up calling out and the right of speech information of colony terminal, wherein, set up the relevant information of calling out and include but not limited to following information: set up the required group information of calling out, call priority, and call property etc., comprise in the right of speech information whether this user can talk, whether need right of speech states such as right of speech wait, and with authorize relevant information.

Step S306, BSS sets up traffic channel resource according to setting up call command, in this step, after channel foundation is finished, no longer send Extended Channel Assignment Message (ECAM) to terminal, also no longer send Extended Supplemental Channel Assignment Message (ESCAM), but, send comprehensive assignment message to colony terminal, wherein when message is finished in DSS transmission foundation, the information that comprehensive assignment message carries includes but not limited to following content: the traffic channel information of being set up, and right of speech information.

After step S308, colony terminal receive comprehensive assignment message, change the corresponding business channel over to, and begin conversation according to the information of carrying in this comprehensive assignment message.

Below in conjunction with accompanying drawing, technique scheme is described in detail.Fig. 4 is according to the signaling process figure of the colony terminal call-establishing method detailed process of the embodiment of the invention, as shown in Figure 4, comprises following processing:

Step 401, terminal makes a call, and call request arrives DSS by BSS;

Step 402, DSS notice BSS begins to set up calling, and inform to set up and call out required essential informations such as group information, because DSS is a dispatch server, it is the master control node of trunked call, the group information of colony terminal, user profile all is kept at this place, and all are conversed also all via the DSS transfer, therefore, DSS can be known user's situation, whether DSS according to the user situation of this trunked call (have other users speech etc.) judges this user's authorization message and right of speech state, and generates right of speech information thus, the right of speech information that generates is sent to BSS, preserve by BSS;

Step 403, the BSS allocation of channel resources may is set up and is called out required Traffic Channel (comprising primary channel and complement channel);

Step 404, BSS sends call setup to DSS and finishes message;

Step 405, BSS issues terminal with the information and the right of speech information of the Traffic Channel of foundation by a comprehensive assignment message, as shown in Figure 5, in the comprehensive assignment message except comprising frequency band, outside the essential informations such as frequency, also comprise authorization message (GRANT_IND, FloorStatus), being arranged on additional information area (Additional record field) and can carrying different primary channels according to assignment mode (ASSIGN_MODE) in addition, complement channel is configured to support different business to the needs such as configurations such as transmission rates, Fig. 5 has provided the example of the example under wherein a kind of assignment mode, those skilled in the art should understand, according to the difference of assignment mode, comprehensive assignment message also can carry different contents.

Step 406, terminal are received and are directly changed the corresponding business channel behind the comprehensive assignment message over to and according to authorizing indication to converse.

This programme do not need to be to send assignment message to terminal at twice at control channel and Traffic Channel respectively with the different of existing scheme, right of speech message does not need independent transmission yet, but etc. required channel resource traffic channel information and the right of speech information of being set up is sent to terminal by an assignment message together after all setting up, reduced mutual with terminal.

System embodiment

According to embodiments of the invention, a kind of colony terminal call set-up systems is provided, Fig. 6 is the block diagram according to the colony terminal call set-up systems of the embodiment of the invention, as shown in Figure 6, colony terminal call set-up systems according to the embodiment of the invention comprises colony terminal 60, DSS 62, BSS 64, wherein, colony terminal 60 comprises: change module 600 over to, DSS 62 comprises: receiver module 620, determination module 622, generation module 624, first sending module 626, BSS 64 comprises: set up module 640, second sending module 642, the 3rd sending module 644.Below each module in the colony terminal call set-up systems in the embodiment of the invention is described.

Particularly, in the colony terminal call set-up systems, colony terminal 60 is used for sending call request messages by air interface to BSS 64, after BSS 64 receives this message, sends these call request messages to DSS 62 after receiving this message.Receiver module 620 among the DSS 62 after receiving the call request message that colony terminal 60 sends, cover half piece 622 authorization message and the right of speech state of at first determining colony terminal 60 really among the DSS 62 according to DSS 62 local state and the group's states of preserving under this colony terminal with corresponding information of this colony terminal and colony terminal; After having determined authorization message and right of speech state, authorization message and right of speech state that notice generation module 624 is determined according to determination module 622 generate right of speech information; Subsequently, first sending module 626 among the DSS 62 will send to BSS 64 and set up call command, BSS 64 can set up calling with notice, and in setting up call command, carry the relevant information of set up calling out and the right of speech information of colony terminal, wherein, the relevant information of set up calling out includes but not limited to following information: set up and call out required group information, call priority and call property etc., comprise in the right of speech information whether this user can talk, whether need right of speech state such as right of speech wait and with authorize relevant information.

BSS 64 set up module 640 receive set up call command after, set up traffic channel resource according to setting up call command; After channel foundation is finished, no longer send Extended Channel Assignment Message (ECAM) to terminal, also no longer send Extended Supplemental Channel Assignment Message (ESCAM), but send comprehensive assignment message to colony terminal 60 by second sending module 642 of BSS 64, wherein, the information that comprehensive assignment message carries includes but not limited to following content: the traffic channel information of being set up, and right of speech information.When colony terminal 60 sent comprehensive assignment message, the 3rd sending module 644 of BSS 64 sends to set up to DSS 62 simultaneously finished message at second sending module 642.

Colony terminal 60 after receiving the comprehensive assignment message that second sending module 642 sends, the changing module 600 over to and just can change the corresponding business channel over to of colony terminal 60 according to described comprehensive assignment message, so far, colony terminal 60 just can begin to converse.

Device embodiment one

According to embodiments of the invention, a kind of colony terminal is provided, Fig. 7 is the block diagram according to the colony terminal of the embodiment of the invention, as shown in Figure 7, colony terminal according to the embodiment of the invention comprises: sending module 70, change module 72 over to, below, the above-mentioned module in the colony terminal is described.

Particularly, sending module 70 is used for sending call request message by BSS to DSS;

After sending module 70 sends call request message, DSS receives this call request message, and at first according to its local that preserve and the corresponding information of this colony terminal, and the state of colony terminal is determined the authorization message and the right of speech state of colony terminal, and generate corresponding right of speech information according to authorization message and right of speech state, after having generated right of speech information, DSS just can send to BSS and set up call command, BSS can set up calling with notice, and in setting up call command, carry the relevant information of set up calling out and the right of speech information of colony terminal, wherein, set up the relevant information of calling out and include but not limited to following information: set up the required group information of calling out, call priority, and call property etc., comprise in the right of speech information whether this user can talk, whether need right of speech states such as right of speech wait, and with authorize relevant information;

BSS sets up traffic channel resource according to setting up call command, after channel foundation is finished, no longer send Extended Channel Assignment Message (ECAM) to terminal, also no longer send Extended Supplemental Channel Assignment Message (ESCAM), but, send comprehensive assignment message to colony terminal, wherein when message is finished in DSS transmission foundation, the information that comprehensive assignment message carries includes but not limited to following content: the traffic channel information of being set up, and right of speech information.

After colony terminal receives comprehensive assignment message, the changing module 72 over to and just can change the corresponding business channel over to of colony terminal according to the comprehensive assignment message that BSS sends.

Device embodiment two

According to embodiments of the invention, a kind of base station sub-system is provided, Fig. 8 is the block diagram according to the base station sub-system of the embodiment of the invention, as shown in Figure 8, BSS according to the embodiment of the invention comprises: receiver module 80, set up module 82, sending module 84, below, the above-mentioned module among the BSS is described.

Particularly, receiver module 80 receives DSS and sends and set up call command, wherein, sets up and carries the relevant information of calling out and the right of speech information of colony terminal set up in the call command; Particularly, the relevant information of set up calling out includes but not limited to following information: set up and call out required group information, call priority and call property etc., comprise in the right of speech information whether this user can talk, whether need right of speech state such as right of speech wait and with authorize relevant information.

Set up module 82 and be connected to receiver module 80, set up module 82 and set up traffic channel resource according to the call command of setting up that receiver module 80 receives; After setting up module 82 and setting up traffic channel resource, sending module 84 no longer sends Extended Channel Assignment Message (ECAM) to terminal, also no longer send Extended Supplemental Channel Assignment Message (ESCAM), but when message is finished in DSS transmission foundation, send comprehensive assignment message to colony terminal, wherein, the comprehensive assignment message information of carrying includes but not limited to following content: the traffic channel information of being set up, and right of speech information.

In sum, by means of technical scheme of the present invention, by after all setting up at required channel resource traffic channel information and the right of speech information of being set up being sent to terminal by an assignment message, solved in the correlation technique when the group system call setup and terminal is carried out repeatedly mutual and the low problem of call successful rate that cause, can reduce mutual with terminal, reduce the probability that interaction message is lost, thereby improve the colony terminal call successful rate.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a colony terminal call-establishing method is characterized in that, comprising:
After the dispatch service subsystem receives the call request message of colony terminal by the base station sub-system transmission, set up call command to described base station sub-system transmission, wherein, described foundation carries the relevant information of set up calling out and the right of speech information of described colony terminal in the call command;
Described base station sub-system is set up traffic channel resource according to the described call command of setting up, and send comprehensive assignment message to described colony terminal, wherein, the described comprehensive assignment message information of carrying comprises: the information of the Traffic Channel of foundation and described right of speech information.
2. method according to claim 1 is characterized in that,, also comprises before call command is set up in described base station sub-system transmission at described dispatch service subsystem:
Described dispatch service subsystem is determined the authorization message and the right of speech state of described colony terminal according to the state of group under the state of described colony terminal and the described colony terminal, and generate described right of speech information according to described authorization message and described right of speech state, wherein, described right of speech information comprises: described authorization message, described right of speech state.
3. method according to claim 1 is characterized in that, sets up after call command sets up traffic channel resource according to described in described base station sub-system, also comprises:
Described base station sub-system sends to set up to described dispatch service subsystem finishes message.
4. method according to claim 1 is characterized in that,, also comprises after described colony terminal sends comprehensive assignment message in described base station sub-system:
Described colony terminal changes the corresponding business channel over to according to described comprehensive assignment message.
5. a colony terminal call set-up systems comprises colony terminal, dispatch service subsystem, base station sub-system, it is characterized in that:
Described colony terminal is used for sending call request message by described base station sub-system to described dispatch service subsystem;
Described dispatch service subsystem comprises:
Receiver module is used to receive the described call request message that described colony terminal sends;
First sending module is used for sending to described base station sub-system and sets up call command, and wherein, described foundation carries the relevant information of calling out and the right of speech information of described colony terminal set up in the call command;
Described base station sub-system comprises:
Set up module, be used for setting up traffic channel resource according to the described call command of setting up;
Second sending module is used for sending comprehensive assignment message to described colony terminal, and wherein, the information that described comprehensive assignment message carries comprises: the information of the Traffic Channel of foundation and described right of speech information.
6. colony terminal call set-up systems according to claim 5 is characterized in that, described dispatch service subsystem further comprises:
Determination module is used for determining according to the state of group under the state of described colony terminal and the described colony terminal authorization message and the right of speech state of described colony terminal;
Generation module is used for generating described right of speech information according to described authorization message and described right of speech state, and wherein, described right of speech information comprises: described authorization message, described right of speech state.
7. colony terminal call set-up systems according to claim 5 is characterized in that, described base station sub-system further comprises:
The 3rd sending module is used for sending foundation to described dispatch service subsystem and finishes message.
8. colony terminal call set-up systems according to claim 5 is characterized in that, described colony terminal further comprises:
Change module over to, be used for changing the corresponding business channel over to according to described comprehensive assignment message.
9. a colony terminal is characterized in that, comprising:
Sending module is used for sending call request message by base station sub-system to the dispatch service subsystem;
Change module over to, be used for changing the corresponding business channel over to according to the comprehensive assignment message that base station sub-system sends, wherein, described comprehensive assignment message comprises: the information of the Traffic Channel of foundation and described right of speech information.
10. a base station sub-system is characterized in that, comprising:
Receiver module is used for the receiving scheduling service subsystem and sends and to set up call command, and wherein, described foundation carries the relevant information of calling out and the right of speech information of colony terminal set up in the call command;
Set up module, be used for setting up traffic channel resource according to the described call command of setting up;
Sending module is used for sending comprehensive assignment message to described colony terminal, and wherein, the information that described comprehensive assignment message carries comprises: the information of the Traffic Channel of foundation and described right of speech information.
CN 200910005227 2009-01-19 2009-01-19 Trunking terminal, call establishment method, system and base station subsystem CN101784123B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102857882A (en) * 2011-06-30 2013-01-02 中兴通讯股份有限公司 Group calling establishing method, group information sending method, corresponding user equipment (UE) and network element
CN103796176A (en) * 2012-10-31 2014-05-14 中兴通讯股份有限公司 Cluster service realization method, system and network element
CN104301870A (en) * 2014-10-08 2015-01-21 励盼攀 Switching method based on combination priority
CN105306466A (en) * 2015-10-29 2016-02-03 东莞酷派软件技术有限公司 Execution method of service, execution system of service, and mobile terminal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101137120B (en) * 2007-01-29 2010-05-19 中兴通讯股份有限公司 Resource allocation method and apparatus
CN101141711B (en) * 2007-10-12 2010-11-10 中兴通讯股份有限公司 Parallel processing method of cluster system resource establishment
CN101150787A (en) * 2007-10-24 2008-03-26 中兴通讯股份有限公司 An active delay access method for cluster communication system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102857882A (en) * 2011-06-30 2013-01-02 中兴通讯股份有限公司 Group calling establishing method, group information sending method, corresponding user equipment (UE) and network element
CN103796176A (en) * 2012-10-31 2014-05-14 中兴通讯股份有限公司 Cluster service realization method, system and network element
CN104301870A (en) * 2014-10-08 2015-01-21 励盼攀 Switching method based on combination priority
CN105306466A (en) * 2015-10-29 2016-02-03 东莞酷派软件技术有限公司 Execution method of service, execution system of service, and mobile terminal

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