CN101707745B - Method, system and device for selecting call groups - Google Patents
Method, system and device for selecting call groups Download PDFInfo
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- CN101707745B CN101707745B CN 200910226241 CN200910226241A CN101707745B CN 101707745 B CN101707745 B CN 101707745B CN 200910226241 CN200910226241 CN 200910226241 CN 200910226241 A CN200910226241 A CN 200910226241A CN 101707745 B CN101707745 B CN 101707745B
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Abstract
The invention discloses a method, a system and a device for selecting call groups, which solve the problem that a terminal is difficult to switch to the group calling of low-priority groups automatically from the group calling of high-priority groups in the prior art. The method comprises the following step that: the terminal receives status information of at least one group, wherein the status information is sent by a cluster server and the terminal belongs to the at least one group; and the terminal selects a group in an activated state according to the received status information and joins in the group calling of the group.
Description
Technical field
The present invention relates to the trunking communicating technology field, particularly a kind of method, system and device of selecting talk group.
Background technology
Trunking communication refers to a kind of dispatching communication mode of special use, comprises special-purpose commander and dispatching communication, and in use cluster user can add calling simultaneously, and conversation is with simplex mode work.In broad terms, the various wireless communication systems with dispatching communication function that comprise wireless intercom system all can be included the category of trunked communication system in.
The network configuration of a basic group system based on CDMA2000 as shown in Figure 1, comprise: based on group system terminal, the base station sub-system (BSS of CDMA2000, Base Station Subsystem), scheduler subsystem (DSS, Dispatch Subsystem), switching subsystem (MSS, Mobile SwitchSubsystem) forms.Wherein, scheduler subsystem DSS mainly comprises: dispatch terminal (PDC, PTTDispatch Client), dispatch server (PDS, PTT Dispatch Server) and dispatching database (PHR, PTT Home Register).
PDC is linked into the speech data gateway of PDS as trunked call, reverse concentrated speech business stream is collected, and forward direction cluster voice flow is distributed.PDC also is established to the dedicated signaling link of PDS, transmits the signaling relevant with trunked call between base station controller BSC and PDS.Because PDC is usually located in the BSS subsystem, on realizing, technology generally incorporates base station sub-system into.
PDS is master control point, the center processing point of trunked call, complete the processing of colony dispatching calling, comprise one by saying that namely (PTT, Push-to-Talk) calls out control, PTT call management, by PHR, the user carried out authentication, mandate and charging, by PHR, the user carried out management and group and position renewal and the distribution of PTT voice flow message etc.
PHR completes data base administration and configuration feature, for cluster user provides group registration, group member registration, and provides the local information of cluster member and the service authority information of cluster member, completes call statistics and billing function.
Also comprise in DSS: the scheduling proxy server DAS of PTT, the equipment that user of mobile station and fixed station user are carried out scheduling controlling and service management, can dispatch and manage the group/user in group/calling etc., such as can individual calling, the scheduling features such as group calling, broadcast ﹠ call, forced interposing and forced releasing, dynamically restructuring, distant getting killed/brings back to life, and increase the management functions such as group, deletion group, increase member, removing members.
The user arranges the priority of group at DAS.The priority data of the group after arranging is stored in database.When initiating the process of group call, scheduler subsystem is to data base querying group priority.By group being carried out the differentiation of priority, make high priority group can seize the resource of low priority group.
Present can belong at most 20 groups based on each terminal in the group system system of CDMA2000.Terminal is in a cluster group calling process, if the high priority group under this terminal is initiated group calling, terminal can withdraw from the group calling that original group calling joins high priority, namely tolls breakdown; If other same-priority groups under this terminal or more low priority group initiation group calling, terminal can not withdraw from present group calling, and terminal interface does not have any variation yet and shows.That is to say, terminal is in a cluster group calling process, if there are other groups to initiate group calling, two kinds of processing modes are arranged: one is that current group calling is tolled breakdown, one be exactly terminal without any variation, know nothing.
Therefore, when a terminal belongs to two groups simultaneously: the A of group and the B of group, wherein, the priority of the A of group is higher than the B of group.The A of group and the B of group be in the situation that call out, and higher than the B of group, at first terminal adds in the group calling of the A of group due to the priority of the A of group, and only after terminal initiatively withdrawed from the A of group, just can lag was linked in the B of group.And at first terminal has added the calling of the A of group, and for the calling that the B of group initiates, terminal does not have any demonstration, that is to say terminal and does not know when the B of group begins to call out, and also just can't in time add.Like this, if this terminal a certain period need be paid close attention to the situation of the B of group more, thinking to know at any time the situation of the B of group, and add, is to be difficult to realize according to above-mentioned method.
Therefore, at present terminal also is difficult to realize to automatically switch to from the high cluster group calling of priority in the low cluster group calling of priority, and can not initiatively add in the group calling of a group.
Summary of the invention
The embodiment of the present invention provides a kind of method, system and device of selecting talk group, is difficult to realize terminal is automatically switched to problem in the low cluster group calling of priority in order to solve in prior art from the high cluster group calling of priority.
The embodiment of the present invention provides a kind of method of selecting talk group, comprising:
The state information of at least one group under the described terminal that terminal reception cluster server sends;
Described terminal is selected a group that is in state of activation, and is added in the group calling of this group according to the state information that receives.
The embodiment of the present invention provides a kind of system of selecting talk group, comprising:
Terminal for the state information of at least one group under the described terminal that receives the cluster server transmission, according to the state information that receives, is selected a group that is in state of activation, and is added in the group calling of this group;
Cluster server is for the state information of at least one group under the described terminal of described terminal transmission.
The embodiment of the present invention provides a kind of terminal of selecting talk group, comprising:
Receiving element is for the state information of at least one group under the described terminal that receives described cluster server transmission;
Selected cell is used for selecting a group that is in state of activation, and adding in the group calling of this group according to the state information that receives.
The embodiment of the present invention provides a kind of server of selecting talk group, comprising:
Determining unit is for the state information of determining at least one group that terminal is affiliated;
Transmitting element is used for to the state information of each group that described terminal transmission is determined.
the state information of at least one group under this terminal that embodiment of the present invention terminal reception cluster server sends, described terminal is according to the state information of returning, select a group that is in state of activation, and add in the group calling of this group, like this, no matter terminal is at holding state, or in group-calling process, can be according to the state information of each group that receives, initiatively select a group to add, also can switch to easily in the group of other conversations, can be initiatively automatically switch to from the high cluster group calling of priority in the low cluster group calling of priority, initiative and the flexibility of terminal have been increased.
Description of drawings
Fig. 1 is the network architecture diagram of group system in prior art;
Fig. 2 is the network architecture diagram of group system in the embodiment of the present invention;
Fig. 3 selects the flow chart of talk group in the embodiment of the present invention;
Fig. 4 selects the flow chart of talk group in one embodiment of the invention;
Fig. 5 selects the flow chart of talk group in another embodiment of the present invention;
Fig. 6 is the flow chart that in the embodiment of the present invention one, cluster server is preserved the state information of group;
Fig. 7 is the flow chart that switches between talk group in the embodiment of the present invention one;
Fig. 8 selects the structure chart of the terminal of talk group in the embodiment of the present invention;
Fig. 9 selects the structure chart of the cluster server of talk group in the embodiment of the present invention.
Embodiment
In the embodiment of the present invention, referring to Fig. 2, trunked communication system comprises: terminal 100 and cluster server 200.Certainly, a plurality of terminals are arranged in trunked communication system, just can form a group between several terminals, a terminal can belong to a plurality of groups.
Preserved the state information of each group in cluster server, namely each group is in state of activation or idle condition.Like this, terminal can to the state information of at least one affiliated group of cluster server inquiry, then in being in the group of state of activation, being determined a group and add in the group calling of this group; Perhaps, cluster server is the state information of at least one group under the terminal transmitting terminal initiatively, and then terminal in being in the group of state of activation, being determined a group and adds in the group calling of this group.Be in the embodiment of the present invention, terminal selects the method for talk group to comprise: the state information of at least one group under this terminal that terminal reception cluster server sends, according to the state information that receives, select a group that is in state of activation, and add in the group calling of this group.
Referring to Fig. 3, select the process of talk group to comprise:
Step 301: the state information of at least one group under this terminal that cluster server sends to terminal.
Here, after cluster server can receive the request of state information of at least one group under this terminal of the inquiry that terminal sends, state information according to the group that preserves, determine the state information of each group of described terminal inquiry, return to the state information of each definite group to terminal.
The group calling status message that cluster server can also receive at least one group's initiation under this terminal has, and according to each group calling status message, preserves the state information of corresponding group, and sends the state information of corresponding group to described terminal.
Step 302: terminal receives the state information of each group.
Step 302: terminal is selected a group that is in state of activation, and is added in the group calling of this group according to the state information that receives.
Wherein, select a specific implementation process of talk group as shown in Figure 4, comprising:
Step 401: terminal sends the request of the state information of at least one group under inquiry terminal to cluster server.
In the embodiment of the present invention, terminal belongs to two, or a plurality of group.And terminal may be in holding state, also can be in the first cluster group calling process, namely is in " listening ", " saying " or the idle condition of the first cluster group calling process.Also namely be in the terminal of any state and can initiate at any time to inquire about the request of the state information of each group under this terminal.
Here, the group of terminal inquiry can be the group that terminal is determined according to application scenarios, can be also two under terminal, three or all groups.For example, terminal is relatively paid close attention to the state information of B group, can send the request of inquiry B group state information.Perhaps, terminal sends the request of all affiliated group's state informations of inquiry.
Step 402: cluster server is determined the state information of corresponding group according to the state information of the group that preserves.
In the embodiment of the present invention, cluster server has been preserved the state information of group, like this, and after the request of the state information of at least one group under cluster server receives the inquiry that terminal initiates, just begin to inquire about the state information of corresponding group in the state information of the group that preserves.
The state information that cluster server is preserved group comprises: when receiving the group calling call message that group sends, state information corresponding to this group is set to state of activation; When receiving the group calling end that group sends, state information corresponding to this group is set to idle condition.
Step 403: cluster server returns to the state information of each definite group to terminal.
The state information of a group under only inquiring about as terminal, cluster server namely returns to the state information of a group; As two under terminal inquiry, the state information of a plurality of or all groups, cluster server returns to the state information of each group of terminal inquiry.
Step 404: terminal is selected a group that is in state of activation, and is added in the group calling of this group according to the state information of returning.
When cluster server only returns to the state information of a group, judge at first whether this group is in state of activation, if this group is in state of activation, terminal adds in the group calling of this group.
When cluster server only returns to the state information of a plurality of groups, at first terminal judges whether each group is in state of activation, select the group that state information is state of activation, then select a group from the group that is in state of activation, and add in the group calling of this group.The priority of the group that terminal is selected may be lower, also may be higher, and just passable as long as this group is in state of activation.
As seen, the state information of group under terminal only need to be inquired about just can be determined the group of conversing, and at this moment, terminal can be in holding state, also can be in a cluster group calling process.When terminal is in holding state, can initiatively select a talk group to add in group-calling process at this moment; When terminal is in a cluster group calling process, can carry out the active switching between talk group this moment.
When terminal is carried out switching between talk group, the priority under need not judging between group.If terminal is in the first cluster group calling, and the priority of the first group can realize also that higher than the second group terminal switches in the second cluster group calling from the first cluster group calling.
The embodiment of the present invention, can also set the search access right of terminal, like this, in the state information of step 402 cluster server according to the group that preserves, before determining the state information of the second group, cluster server need check also whether this terminal has search access right, when definite terminal has search access right, execution in step 403, otherwise cluster server returns to the inquiry failed message to terminal.
In the embodiment of the present invention, when terminal is in holding state, not in any one cluster group calling, also can send to cluster server the request of the state information of at least one group under the described terminal of inquiry, after the state information of the group of the correspondence that the reception cluster server returns, select a group to add in the group calling of this group from the group that activates.
In another embodiment of the present invention, after the group calling status message that at least one group under cluster server receives terminal initiates, preserve the state information of corresponding group, and send the state information of corresponding group to this terminal.Like this, terminal can according to the state information of the group that receives, determine whether to select this talk group.Referring to Fig. 5, select another process of talk group to comprise:
Step 501: at least one group under terminal sends the group calling status message to cluster server.
Here, the group calling status message comprises: group calling works the information of exhaling, or the group calling ending message.When a group under terminal initiates group calling, send the group calling call message to cluster server; When a group call under terminal finishes, send the group calling ending message to cluster server.
Step 502: cluster server is preserved the state information of corresponding group according to the group calling status message that receives.
Here, when receiving the group calling call message that group sends, state information corresponding to this group is set to state of activation; When receiving the group calling end that group sends, state information corresponding to this group is set to idle condition.
Step 503: cluster server sends the state information of corresponding group to terminal.
When only having a group to send the group calling status message, cluster server sends the state information of this group to terminal.When there being a plurality of groups to send the group calling status message, cluster server can send the state information of this group according to the order of setting to terminal.
Step 504: terminal is selected a group that is in state of activation, and is added in the group calling of this group according to the state information that receives.
The state information that receives a group when terminal is active information, and terminal can be determined to add in this group call, also can temporarily not add.The state information that receives a plurality of groups when terminal is all active information, the time, can select a group to add in the group calling of this group.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
Under the said system framework, terminal MS belongs to a plurality of groups, and cluster server is preserved the state information process of group referring to Fig. 6, comprising:
Step 601: the GP of group sends the group calling status message by base station sub-system BBS to dispatch server PDS.
Here, the group calling status message comprises: group calling works the information of exhaling, or the group calling ending message.When the GP of group initiates group calling, send the group calling call message by BBS to PDS; When the GP of group end of calling,, send the group calling ending message by BBS to PDS.
Step 602:PDS arranges state information corresponding to the GP of this group, and status information data is deposited in dispatching database PHR according to the group calling status message that receives.
When PDS receive group calling rise exhale information after, the GP of this group corresponding states information is set to state of activation, and the state of activation data are deposited in dispatching database PHR.
When PDS receive exhale ending message after, the GP of this group corresponding states information is set to idle condition, and the idle condition data are deposited in dispatching database PHR.
Step 603:PHR returns to group's status message to PDS and preserves successful message.
In the embodiment of the present invention, PHR is after PDS returns to the successful message of group's status message preservation, PDS can also initiatively send to terminal the state information of group, to be PDS send group to terminal is in state of activation or idle condition, like this, terminal can determine whether to select this group and add according to the state information of the group that receives, and comprising:
The state information that receives group when terminal is active information, and terminal can be determined to add in this group call, also can temporarily not add; The state information that receives group when terminal is idle information, and terminal is not done change.
According to said process, can preserve the state information of each group at PHR, terminal can be selected a talk group.In the embodiment of the present invention, terminal MS is in a cluster group calling process at first, and terminal is selected a talk group, and the process of namely switching between talk group comprises referring to Fig. 7:
Step 701: terminal MS sends the request of the state information of all groups under inquiring about to dispatch server PDS by base station sub-system BBS.
Terminal MS is in a cluster group calling process at this moment, may " listen ", " saying " or idle condition.
After step 702:PDS receives request, inquire about to dispatching database PHR the authority whether this MS has inquiry, when PHR determines that MS has the authority of inquiry, return to the response that possesses search access right to PDS, execution in step 703; When PHR determines that MS does not have the authority of inquiry, return to the response that does not possess search access right to PDS, execution in step 707.
Step 703:PDS sends the request of the state information of all groups under this terminal of inquiry to PHR.
Step 704:PHR returns to the state information of all groups under this terminal to PDS.
Step 705:PDS returns to the state information of group under it to this terminal by BSS.
Step 706: terminal is according to the state information that receives, and determines that a group switches, and switching flow finishes.
Here, at first terminal judges whether the state of each affiliated group is state of activation, then selects a group in the group of state of activation, and in the cluster group calling that brings Selection In.
The priority of the group after terminal is switched may be lower than the priority of the group before switching, also may be higher than the priority of the group before switching.
Step 707:PDS sends the inquiry failed message by BSS to this terminal, and this switching flow finishes.
When terminal MS does not possess search access right, just can not initiatively carry out the switching between talk group.
In the embodiment of the present invention, the system of switching between talk group comprises referring to Fig. 2: terminal 100 and cluster server 200.
Terminal 100 for the state information of at least one group under the described terminal that receives the cluster server transmission, according to the state information that receives, is selected a group that is in state of activation, and is added in the group calling of this group.
Cluster server 200 is for the state information of at least one group under the described terminal of described terminal transmission.
Wherein, terminal 100 also is used for sending to described cluster server the request of the state information of at least one group under the described terminal of inquiry.,
Cluster server 200, also be used for the request of the state information of at least one group under the described terminal of inquiry that receiving terminal sends, state information according to the group that preserves, determine the state information of each group of described terminal inquiry, and return to the state information of each definite group to described terminal.
In the embodiment of the present invention, cluster server 200, the group calling status message of also initiating at least one group under receiving terminal is according to each group calling status message, the state information of corresponding group is set, and sends the state information of corresponding group to described terminal.
Cluster server 200, also be used for when receiving the group calling call message that group sends, state information corresponding to described group is set to state of activation, and when receiving the group calling end that group sends, state information corresponding to described group is set to idle condition.
Cluster server 200 also is used for checking whether described terminal has search access right.
Like this, when cluster server 200 checks that terminal does not possess search access right, send the inquiry failed message to terminal.
And in the embodiment of the present invention, referring to Fig. 8, select the terminal of talk group to comprise: receiving element 810 and selected cell 820.Wherein,
Receiving element 810 is for the state information of at least one group under the described terminal that receives described cluster server transmission.
This terminal also comprises: transmitting element is used for sending to cluster server the request of the state information of at least one group under the described terminal of inquiry.
Referring to Fig. 9, in the embodiment of the present invention, select the cluster server of talk group, comprising: determining unit 910 and transmitting element 920.
Determining unit 910 is for the state information of determining at least one group that terminal is affiliated.
Transmitting element 920 is used for to the state information of each group that described terminal transmission is determined.
This cluster server also comprises:
The first receiving element is used for the request of the state information of at least one group under the described terminal of inquiry that receiving terminal sends.,
Determining unit 910 also is used for the state information according to the group that preserves, and determines the state information of each group of described terminal inquiry.
Transmitting element 920 is also for return to the state information of each definite group to described terminal.
This cluster server also comprises:
The second receiving element is for the group calling status message that receives at least one affiliated group's initiation of described terminal.,
Determining unit 910 also is used for according to each group calling status message, preserves the state information of corresponding group.
Transmitting element 920 also is used for to the state information of the corresponding group of described terminal transmission.
In above-mentioned cluster server, determining unit comprises:
The first setting unit is used for when receiving the group calling call message that group sends, and state information corresponding to described group is set to state of activation.
The second setting unit is used for when receiving the group calling end that group sends, and state information corresponding to described group is set to idle condition.
This cluster server can also comprise:
The authority query unit is used for checking whether described terminal has search access right.
Like this, transmitting element when also being used for not possessing search access right to the inspection terminal, sends the inquiry failed message to terminal.
in sum, in the embodiment of the present invention, the state information of at least one group under the described terminal that terminal reception cluster server sends, according to the state information that receives, select a group that is in state of activation, and add in the group calling of this group, like this, no matter which kind of state is terminal be in, terminal can initiatively select a group to add, also can switch to easily in the group of other conversations, can be initiatively automatically switch to from the high cluster group calling of priority in the low cluster group calling of priority, initiative and the flexibility of terminal have been increased, have great convenience for the user.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if of the present invention these are revised and within modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. a method of selecting talk group, is characterized in that, comprising:
The state information of at least one group under the described terminal that terminal reception cluster server sends;
Described terminal is selected a group that is in state of activation, and is added in the group calling of this group according to the state information that receives;
Wherein, described terminal adds in the group calling of this group, comprising:
When terminal is in holding state, according to the state information that receives, initiatively select a group that is in state of activation, and add in the group calling of this group; When terminal is in a cluster group calling process, according to the state information that receives, the active of carrying out between the talk group of state of activation is switched.
2. the method for claim 1, is characterized in that, before the state information of at least one group under the described terminal that described terminal reception cluster server sends, comprising:
Described terminal sends the request of the state information of at least one group under the described terminal of inquiring about to described cluster server;
Described cluster server is determined the state information of each group of described terminal inquiry according to the state information of the group that preserves;
Described cluster server returns to the state information of each definite group to described terminal.
3. the method for claim 1, is characterized in that, before the state information of at least one group under the described terminal that described terminal reception cluster server sends, comprising:
Described cluster server receives the group calling status message that at least one group under described terminal initiates;
Described cluster server is preserved the state information of corresponding group according to each group calling status message, and sends the state information of corresponding group to described terminal.
4. method as claimed in claim 2 or claim 3, is characterized in that, the state information that described cluster server is preserved group comprises:
When receiving the group calling call message that group sends, state information corresponding to described group is set to state of activation;
When receiving the group calling end that group sends, state information corresponding to described group is set to idle condition.
5. method as claimed in claim 2, is characterized in that, described cluster server also comprises before determining the state information of each group of described terminal inquiry:
Described cluster server checks whether described terminal has search access right.
6. a system of selecting talk group, is characterized in that, comprising:
Terminal for the state information of at least one group under the described terminal that receives the cluster server transmission, according to the state information that receives, is selected a group that is in state of activation, and is added in the group calling of this group;
Cluster server is for the state information of at least one group under the described terminal of described terminal transmission;
Wherein, terminal specifically is used for, and when terminal is in holding state, according to the state information that the cluster server that receives sends, initiatively selects a group that is in state of activation, and adds in the group calling of this group; When terminal is in a cluster group calling process, according to the state information that the cluster server that receives sends, the active of carrying out between the talk group of state of activation is switched.
7. system as claimed in claim 6, is characterized in that,
Described terminal also is used for sending to described cluster server the request of the state information of at least one group under the described terminal of inquiry;
Described cluster server, also be used for receiving the request of the state information of at least one group under the described terminal of inquiry that described terminal sends, state information according to the group that preserves, determine the state information of each group of described terminal inquiry, and return to the state information of each definite group to described terminal.
8. system as claimed in claim 6, is characterized in that,
Described cluster server also is used for receiving the group calling status message that at least one group under described terminal initiates, and according to each group calling status message, preserves the state information of corresponding group, and sends the state information of corresponding group to described terminal.
9. system as claimed in claim 7 or 8, is characterized in that,
Described cluster server, also be used for when receiving the group calling call message that group sends, state information corresponding to described group is set to state of activation, and when receiving the group calling end that group sends, state information corresponding to described group is set to idle condition.
10. system as claimed in claim 7, is characterized in that,
Described cluster server also is used for checking whether described terminal has search access right.
11. a terminal of selecting talk group is characterized in that, comprising:
Receiving element is for the state information of at least one group under the described terminal that receives described cluster server transmission;
Selected cell is used for selecting a group that is in state of activation, and adding in the group calling of this group according to the state information that receives;
Wherein, selected cell specifically is used for, and when terminal is in holding state, according to the state information that receives, initiatively selects a group that is in state of activation, and adds in the group calling of this group; When terminal is in a cluster group calling process, according to the state information that receives, the active of carrying out between the talk group of state of activation is switched.
12. terminal as claimed in claim 11 is characterized in that, also comprises
Transmitting element is used for sending to cluster server the request of the state information of at least one group under the described terminal of inquiry.
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| CN103167422B (en) * | 2011-12-15 | 2016-06-15 | 中国电信股份有限公司 | Automatically method, system and the user terminal lagging and adding session |
| CN103220627B (en) * | 2012-01-18 | 2016-04-20 | 鼎桥通信技术有限公司 | Do not connect group call processing method and monitor terminal |
| CN103002405B (en) * | 2012-12-17 | 2016-03-30 | 海能达通信股份有限公司 | The method of group calling, relevant apparatus and system is entered in broadband multimedia cluster system |
| CN104469697B (en) * | 2014-11-10 | 2018-10-02 | 北京佳讯飞鸿电气股份有限公司 | A method of realizing that automatic clawback addition group is exhaled |
| CN106303984A (en) * | 2015-05-28 | 2017-01-04 | 成都鼎桥通信技术有限公司 | LTE broadband cluster user control method and device |
| CN110475212B (en) * | 2018-05-10 | 2022-02-15 | 成都鼎桥通信技术有限公司 | Method and device for selecting receiving group |
| CN110730427A (en) * | 2018-07-17 | 2020-01-24 | 普天信息技术有限公司 | Group joining method and device |
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| CN101047703A (en) * | 2006-03-28 | 2007-10-03 | 腾讯科技（深圳）有限公司 | Group join method and system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717076A (en) * | 2004-06-28 | 2006-01-04 | 华为技术有限公司 | System and method for realizing colony service |
| CN1897722A (en) * | 2005-07-15 | 2007-01-17 | 中兴通讯股份有限公司 | Method for inquiring packet system state |
| CN101047703A (en) * | 2006-03-28 | 2007-10-03 | 腾讯科技（深圳）有限公司 | Group join method and system |
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