CN1852492B - Group-calling set-up method and system - Google Patents
Group-calling set-up method and system Download PDFInfo
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- CN1852492B CN1852492B CN200510105028A CN200510105028A CN1852492B CN 1852492 B CN1852492 B CN 1852492B CN 200510105028 A CN200510105028 A CN 200510105028A CN 200510105028 A CN200510105028 A CN 200510105028A CN 1852492 B CN1852492 B CN 1852492B
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- H04W76/40—Connection management for selective distribution or broadcast
Abstract
The method includes steps: when user initiates group calling, network side of group call communication system in GSM mode indexes the group the user locates based on group call id carried by group call initialization message sent from the user; based on other users' id in the group of the indexed user, the method searches the said other users in the group and puts them to the group call initiated by the user in sequence so as to establish the group call. Correspondingly, the invention also discloses a group call system. Advanages are: saving resources of NCH channel, raising quality of operating group call service of group call communication system in GSM mode.
Description
Technical field
The present invention relates to the trunking communicating technology field, relate in particular to a kind of group-calling set-up method and system thereof.
Background technology
The digital cluster communication net is the novel mobile communication system that rise at twentieth century end, and it can also realize any communication between individual and colony except the personal mobile communication that possesses common mobile communication network (as GSM, cdma network etc.) and can provide is served.
Wherein, the GT800 trunking communicating technology is a kind of professional digital cluster communication new technology based on time division multiple access, it, can be professional cluster user high-performance, jumbo cluster communication service is provided by optimization and the combination to the TDMA and the TD-SCDMA communication technology in conjunction with cellular telecommunication art; And it is stable that the GT800 trunked communication system has systematic function, continue by force, the fast advantages such as data service of performance and two-forty of the capability of sustainable development.
At present, in the GT800 trunked communication system, when network side is initiated group-calling service the user, need be at the notification channel (NCH of all sub-districts, Notification Channel) goes up transmission group calling notification message, comprise group calling sign (group calling ID) in the group calling notification message of this transmission; Other users in the corresponding group are by the NCH channel in monitoring self sub-district of living in, in case the group calling ID that comprises in the group calling notification message of finding on the NCH channel, to send and self subscriber identification module (SIM, Subscriber Identity Module) the group calling ID that writes in advance in is identical, this group calling notification message just makes an immediate response, join in the above-mentioned Client-initiated group calling, thereby finish the foundation of this group calling.
Because in the GT800 trunked communication system, the NCH channel resource is very limited at present, next sub-district of ordinary circumstance may just be assigned with a NCH channel.Like this after the group calling of a large amount of numbers is initiated simultaneously, network side need be on each NCH channel each different group calling notification message of transmission in cycle, because the NCH channel resource is relatively more nervous, when a plurality of group calling notification messages all need to send, the transmission of just each group calling notification message need being ranked on this NCH channel, therefore when the group calling notification message number that will send when network side is too much, just may cause the transmission of group calling notification message to lag behind or lose, will have influence on the running quality of group calling communication business like this.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of group-calling set-up method and system thereof, to save the NCH channel resource, the running quality of the group calling communication business in the trunked communication system of raising GSM standard.
For addressing the above problem, the technical scheme that the present invention proposes is as follows:
A kind of group-calling set-up method comprises step:
The trunked communication system network side of A, GSM standard is when the user initiates group calling, and the group calling sign of carrying in the message, the group at this user place of index are initiated in the group calling of sending according to this user; And
B, according to other each user ID in the group at this user place of indexing, successively with other each subscriber pagings in this group in this Client-initiated group calling, finish the foundation of this group calling;
C, in this group calling of setting up, listening user is realized mobile management by cell reselection process, specifically comprises:
C1, described listening user are located new sub-district, and send the gravity treatment notification message to network side in this new sub-district;
After c2, described network side receive the gravity treatment notification message, judge in the described new sub-district whether have group-calling channel, if described listening user is assigned on the group-calling channel in this new sub-district; Otherwise be this new cell allocation group-calling channel, and described listening user assigned on the group-calling channel of distribution.
Preferably, described group calling is designated the group calling number.
Preferably, described user ID is a Subscriber Number.
Preferably, described step B specifically comprises step:
The trunked communication system network side of B1, described GSM standard obtains corresponding each user's international mobile subscriber identity according to other each user number information in the group at this user place that indexes; And
Each user's that B2, basis get access to international mobile subscriber identity is initiated paging to other each users in this group successively;
After other each users in B3, this group receive the beep-page message of network side transmitted, to network side feedback page-response message;
B4, network side judge whether for this user who feeds back page-response message has distributed group-calling channel, if this user of assignment is to the group-calling channel that has distributed at each user who feeds back page-response message; Otherwise, and this user is assigned on the group-calling channel of described distribution for this user distributes group-calling channel.
Preferably, in this group calling of setting up, the speech user realizes mobile management by the sub-district hand-off process.
Preferably, described listening user realizes that by the sub-district gravity treatment process of mobile management also comprises:
C3, described network side carry out descending detection in the residing former sub-district of described listening user, to judge in this former sub-district whether also have listening user, if keep the group-calling channel in this former sub-district; Otherwise delete the group-calling channel in this former sub-district.
Preferably, the trunked communication system of described GSM standard is the GT800 trunked communication system.
System is set up in a kind of group calling, comprises the trunked communication system network side and the terminal equipment of GSM standard, and described network side comprises:
Indexing units, the trunked communication system network side that is used for the GSM standard are when the user initiates group calling, and the group calling sign of carrying in the message, the group at this user place of index are initiated in the group calling of sending according to this user;
Paging unit, other each user ID of the group at this user place that is used for indexing according to described indexing units, successively with other each subscriber pagings in this group in this Client-initiated group calling, to finish the foundation of this group calling;
Described terminal equipment comprises:
The cell localization unit, be used for setting up in group calling successfully follow-up, the user as the listening user process in the location new sub-district;
Gravity treatment notice transmitting element, be used for described cell localization cell location to new sub-district send the gravity treatment notification message to network side;
Described network side also comprises:
First judging unit is used for the gravity treatment notification message sent according to described gravity treatment notice transmitting element, judges in the described new sub-district whether have group-calling channel;
The first channel assignment unit is used in the described first judgment unit judges result when being, described listening user is assigned on the group-calling channel in this new sub-district;
Channel-assignment unit is used in the described first judgment unit judges result being this new cell allocation group-calling channel for not the time; With
Second channel assignment unit is used for described listening user is assigned to the group-calling channel that described channel-assignment unit is distributed.
Preferably, described paging unit specifically comprises:
Obtain subelement, other each user ID of the group at this user place that is used for indexing according to described indexing units are obtained corresponding each user's international mobile subscriber identity;
The paging subelement is used for the international mobile subscriber identity that obtains each user that subelement gets access to according to described, successively other each users in this group is initiated paging;
Page response receives subelement, is used to receive the page-response message that other each users in this group feed back to network side behind the beep-page message that receives described paging subelement initiation;
Judgment sub-unit is used for judging whether to have distributed group-calling channel for this user who feeds back page-response message at each user who receives subelement feedback page-response message to described page response;
The first channel assignment subelement is used in described judgment sub-unit judged result when being, this user of assignment is to the group-calling channel that has distributed;
The channel allocation subelement is used in described judgment sub-unit judged result for not the time, for this user distributes group-calling channel; With
Second channel assignment subset unit is used for this user is assigned to the group-calling channel that described channel allocation subelement distributes.
Preferably, described network side also comprises:
Descending detecting unit is used for carrying out descending detection in the residing former sub-district of described listening user;
Second judging unit is used for the testing result according to described descending detecting unit, judges whether also there is listening user in this former sub-district;
The channel delete cells is used in the described second judgment unit judges result deleting the group-calling channel in this former sub-district for not the time.
The beneficial effect that the present invention can reach is as follows:
The present invention program proposes the trunked communication system (as the GT800 trunked communication system) of GSM standard when network side is initiated group calling the user, and the group calling sign (group calling ID) of carrying in the message, the group at this user place of index are initiated in the group calling of sending according to this user; And according to other each user ID (user ID) in the group at this user place of indexing, successively with other each subscriber pagings in this group in this Client-initiated group calling, thereby finish the foundation of this group calling.Pass through the present invention program, the trunked communication system (as the GT800 trunked communication system) that can realize the GSM standard need not take the NCH channel resource in group call establishment process, thereby saved the NCH channel resource, improved the running quality of the group calling communication business in the trunked communication system of GSM standard; Simultaneously group user need not real-time listening NCH channel, but (PCH PagingChannel), thereby has saved the battery electric power of user terminal by discontinuous reception (DRX, Discontinuous Reception) mode monitoring seek channel.
In addition, based on the present invention program, need not group calling ID is write in the SIM card of group user, make the user when the application group-calling service, the marshalling processing procedure of network side is more simple and convenient.
Description of drawings
Fig. 1 is the main realization principle flow chart of group-calling set-up method of the present invention;
Fig. 2 is that other each user's incoming calls were set up the process chart of group calling in network side will be organized by the paging mode in the inventive method in group calling;
Fig. 3 realizes the process chart of mobile management by cell reselection process for listening user in the inventive method;
Fig. 4 sets up the main composition structured flowchart of system for group calling of the present invention;
Fig. 5 is the concrete composition structured flowchart of paging unit in the system of the present invention;
Fig. 6 is for being realization mobile management problem, the main composition structured flowchart of network side and terminal equipment side in the system of the present invention.
Embodiment
The present invention program's design philosophy is: (as the GT800 trunked communication system) realizes setting up in the paging mode technology of group-calling service in the trunked communication system of GSM standard, to save the NCH channel resource in the trunked communication system.Promptly in the trunked communication system of GSM standard, the initiator of group calling adopts normal group calling start flow (same prior art), the paging mode that will adopt the present invention program to propose when the user adds this group calling in other groups.
Be explained in detail below in conjunction with the main realization principle and the embodiment thereof of each accompanying drawing the present invention program.
Please refer to Fig. 1, this figure is the main realization principle flow chart of group-calling set-up method of the present invention, and its main implementation procedure is as follows:
Step S10, the trunked communication system network side of GSM standard are when the user initiates group calling, and the group calling sign (group calling ID) of carrying in the message, the group at this user place of index are initiated in the group calling of sending according to this user; Wherein this initiation process of group calling is identical with the initiation process of prior art, and the present invention is no longer too much given unnecessary details here;
Wherein the most typical example of the trunked communication system of GSM standard is exactly GT800 trunked communication system (being GSM 800M trunked communication system) here;
Step S20, the trunked communication system network side of GSM standard is according to other each user ID (user ID) in the group at this user place that indexes, successively with other each subscriber pagings in this group in this Client-initiated group calling, thereby finish the foundation of this group calling, be network side according to the identification information of other each users in the group (as number information etc.) by each user of PCH channel paging, after making each user receive beep-page message, can join in the group calling of this initiation.
The group calling mentioned among above-mentioned steps S10 sign (group calling ID) can but be not limited to the group calling number information; Simultaneously, the user ID of mentioning among the above-mentioned steps S20 (user ID) can but be not limited to user number information.
Please refer to Fig. 2, this figure is that other each user's incoming calls were set up the process chart of group calling in network side will be organized by the paging mode in the inventive method in group calling, and its concrete implementation procedure is as follows:
Step S201, the trunked communication system network side of GSM standard obtain corresponding each user's international mobile subscriber identity (IMSI) according to other each user number information in the group at above-mentioned this user place that indexes (each user's MSISDN information);
Step S202, the trunked communication system network side of GSM standard initiate paging respectively to other each users in this group successively according to above-mentioned each user's who gets access to IMSI;
Step S203 is after each user of other in this group receives the beep-page message of network side transmitted, respectively to network side feedback page-response message;
Step S204, the trunked communication system network side of GSM standard judge whether to be that this user who feeds back page-response message has distributed group-calling channel at each user of feedback page-response message, if, execution in step S205; Otherwise execution in step S206;
Step S205, this user of trunked communication system network side assignment of GSM standard is to the group-calling channel that has distributed;
Step S206, the trunked communication system network side of GSM standard distributes new group-calling channel for this user, and this user is assigned on this newly assigned group-calling channel.
An embodiment who realizes group call establishment process according to the present invention program's principle:
GT800 trunked communication system network side is inquired about each user MSISDN number of this group calling correspondence by group calling ID, and respectively according to each Mobile Subscriber International ISDN Number, obtain each user's IMSI number, carry out the paging handling process according to each user's IMSI number then, i.e. each user in the paging group successively of IMSI number by each user in the group.After each user receives beep-page message in the group, respond page-response message, network side distributes group-calling channel for the user who responds page-response message, and the user is assigned on the group-calling channel of distribution; If this moment, group-calling channel was set up, then direct assigned user is to the group-calling channel that has distributed.
Network side takies situation according to up channel and connects net, and the up channel that is about to the spokesman is routed on the down channel of each those who answer in the group.
After group calling is set up, enter at present normal group call uplink and take flow process, promptly the user seizes up channel by press-and-talk (PTT, Push To Talk) preempt-mode, makes a speech.
If nobody takies up channel for a long time, network side will initiatively be removed this group calling, and discharge the group-calling channel of each CU.Wherein each user can withdraw from group calling by the on-hook mode.
After group calling is set up successfully, each user carries out in the group calling communication process in the subsequent groups, be that spokesman user or those who answer user may occur in the problem that moves between the different districts, this just relates to the settling mode of mobile management, wherein the inventive method proposes here in setting up successful group calling, and the speech user realizes mobile management (the specific implementation process is with sub-district of the prior art hand-off process) by the sub-district hand-off process; Listening user is then realized mobile management by cell reselection process.
Please refer to Fig. 3, this figure is that listening user is realized the process chart of mobile management by cell reselection process in the inventive method, and its specific implementation process is as follows:
Step S301, listening user according to the RST of each adjacent sub-district, locate a suitable new sub-district in the group calling communication process;
Step S302, listening user send the gravity treatment notification message to network side in the new sub-district of this location;
Step S303, network side judge in this new sub-district whether have the group-calling channel of having set up after receiving the gravity treatment notification message, if, execution in step S304; Otherwise execution in step S305;
Step S304, network side assigns to this listening user on the group-calling channel in this new sub-district, goes to step S306 then;
Step S305, network side are the new group-calling channel of this new cell allocation, and this listening user is assigned on the newly assigned group-calling channel;
Step S306, network side carry out descending detection in the residing former sub-district of this listening user handles;
Step S307, network side judge whether also there is listening user in this former sub-district according to above-mentioned descending testing result, if, execution in step S308; Otherwise execution in step S309;
Step S308, network side keep the group-calling channel in this former sub-district;
Step S309, network side delete the group-calling channel in this former sub-district.
Group-calling set-up method of the present invention is under the smaller situation of group calling userbase, replace sending the foundation that the group calling notification message is realized group calling by send beep-page message at the PCH channel at the NCH channel, send because beep-page message is the lane place at the user place, need not the whole network and send; Under the fewer situation of number of users, only need part PCH channel resource promptly can realize the foundation of group calling like this; And equally for this small-scale group calling, sampling sends the group calling notification message on the NCH channel, then need send at the whole network, therefore can cause the serious waste of NCH channel resource.
Accordingly, the invention allows for a kind of group calling and set up system.Please refer to Fig. 4, this figure is the main composition structured flowchart that system is set up in group calling of the present invention, trunked communication system network side and the terminal equipment that system comprises the GSM standard set up in group calling wherein of the present invention, wherein the trunked communication system network side of GSM standard comprises indexing units 10 and paging unit 20, and the effect of each several part is as follows:
Paging unit 20, other each user ID (user ID) of the group at this user place that is used for indexing according to indexing units 10, successively with other each subscriber pagings in this group in this Client-initiated group calling, thereby finish the foundation of this group calling.
Please refer to Fig. 5, this figure is the concrete composition structured flowchart of paging unit in the system of the present invention, its paging unit 20 specifically comprises obtains subelement 201, paging subelement 202, page response reception subelement 203, judgment sub-unit 204, the first channel assignment subelement 205, channel-assignment unit 206 and second channel assignment subset unit 207, and the effect of its each part is as follows:
Obtain subelement 201, other each user ID of the group at this user place that is used for indexing according to indexing units 10 are obtained corresponding each user's international mobile subscriber identity IMSI;
Paging subelement 202 is used for successively other each users in this group being initiated paging respectively according to the IMSI that obtains each user that subelement 201 gets access to;
Page response receives subelement 203, is used to receive the page-response message that other each users in this group feed back to network side behind the beep-page message that receives 202 initiations of paging subelement;
The first channel assignment subelement 205, being used in judgment sub-unit 204 judged results is under the situation that is, this user of assignment is to the group-calling channel that has distributed;
Second channel assignment subset unit 207 is used for this user is assigned to the new group-calling channel that channel allocation subelement 206 distributes.
Please refer to Fig. 6, this figure is for realizing the mobile management problem in the system of the present invention, the main composition structured flowchart of network side and terminal equipment side wherein comprises cell localization unit 401 and gravity treatment notice transmitting element 402 in the terminal equipment, the effect of each part is as follows:
Cell localization unit 401, be used for setting up in group calling successfully follow-up, the user as the listening user process in, according to the signal quality of each adjacent sub-district, locate a suitable new sub-district;
Gravity treatment notice transmitting element 402, the new sub-district that is used for navigating in cell localization unit 401 sends the gravity treatment notification message to network side;
Network side specifically also comprises first judging unit 301, the first channel assignment unit 302, channel-assignment unit 303, second channel assignment unit 304, descending detecting unit 305, second judging unit 306 and channel delete cells 307, and wherein the main effect of each part is as follows:
First judging unit 301 is used for the gravity treatment notification message sent according to gravity treatment notice transmitting element 402, judges in this new sub-district whether have the group-calling channel of having set up;
The first channel assignment unit 302, being used in first judging unit, 301 judged results is under the situation that is, this listening user is assigned on the already present group-calling channel in this new sub-district;
Channel-assignment unit 303, being used in first judging unit, 301 judged results is under the situation not, is the new group-calling channel of this new cell allocation;
Second channel assignment unit 304 is used for this listening user is assigned to the new group-calling channel that channel-assignment unit 303 is distributed;
Descending detecting unit 305 is used for carrying out descending detection in the residing former sub-district of this listening user and handles;
Second judging unit 306 is used for the testing result according to descending detecting unit 305, judges whether also have other listening users in this former sub-district;
Channel delete cells 307, being used in second judging unit, 306 judged results is under the situation not, deletes the group-calling channel in this former sub-district.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a group-calling set-up method is characterized in that, comprises step:
The trunked communication system network side of A, GSM standard is when the user initiates group calling, and the group calling sign of carrying in the message, the group at this user place of index are initiated in the group calling of sending according to this user; And
B, according to other each user ID in the group at this user place of indexing, successively with other each subscriber pagings in this group in this Client-initiated group calling, finish the foundation of this group calling;
C, in this group calling of setting up, listening user is realized mobile management by cell reselection process, specifically comprises:
C1, described listening user are located new sub-district, and send the gravity treatment notification message to network side in this new sub-district;
After c2, described network side receive the gravity treatment notification message, judge in the described new sub-district whether have group-calling channel, if described listening user is assigned on the group-calling channel in this new sub-district; Otherwise be this new cell allocation group-calling channel, and described listening user assigned on the group-calling channel of distribution.
2. the method for claim 1 is characterized in that, described group calling is designated the group calling number.
3. the method for claim 1 is characterized in that, described user ID is a Subscriber Number.
4. method as claimed in claim 3 is characterized in that, described step B specifically comprises step:
The trunked communication system network side of B1, described GSM standard obtains corresponding each user's international mobile subscriber identity according to other each user number information in the group at this user place that indexes; And
Each user's that B2, basis get access to international mobile subscriber identity is initiated paging to other each users in this group successively;
After other each users in B3, this group receive the beep-page message of network side transmitted, to network side feedback page-response message;
B4, network side judge whether for this user who feeds back page-response message has distributed group-calling channel, if this user of assignment is to the group-calling channel that has distributed at each user who feeds back page-response message; Otherwise, and this user is assigned on the group-calling channel of described distribution for this user distributes group-calling channel.
5. the method for claim 1 is characterized in that, in this group calling of setting up, the speech user realizes mobile management by the sub-district hand-off process.
6. the method for claim 1 is characterized in that, described listening user realizes that by the sub-district gravity treatment process of mobile management also comprises:
C3, described network side carry out descending detection in the residing former sub-district of described listening user, to judge in this former sub-district whether also have listening user, if keep the group-calling channel in this former sub-district; Otherwise delete the group-calling channel in this former sub-district.
7. as claim 1 or 4 described methods, it is characterized in that the trunked communication system of described GSM standard is the GT800 trunked communication system.
8. system is set up in a group calling, it is characterized in that, comprises the trunked communication system network side and the terminal equipment of GSM standard, and described network side comprises:
Indexing units, the trunked communication system network side that is used for the GSM standard are when the user initiates group calling, and the group calling sign of carrying in the message, the group at this user place of index are initiated in the group calling of sending according to this user;
Paging unit, other each user ID of the group at this user place that is used for indexing according to described indexing units, successively with other each subscriber pagings in this group in this Client-initiated group calling, to finish the foundation of this group calling;
Described terminal equipment comprises:
The cell localization unit, be used for setting up in group calling successfully follow-up, the user as the listening user process in the location new sub-district;
Gravity treatment notice transmitting element, be used for described cell localization cell location to new sub-district send the gravity treatment notification message to network side;
Described network side also comprises:
First judging unit is used for the gravity treatment notification message sent according to described gravity treatment notice transmitting element, judges in the described new sub-district whether have group-calling channel;
The first channel assignment unit is used in the described first judgment unit judges result when being, described listening user is assigned on the group-calling channel in this new sub-district;
Channel-assignment unit is used in the described first judgment unit judges result being this new cell allocation group-calling channel for not the time; With
Second channel assignment unit is used for described listening user is assigned to the group-calling channel that described channel-assignment unit is distributed.
9. system as claimed in claim 8 is characterized in that, described paging unit specifically comprises:
Obtain subelement, other each user ID of the group at this user place that is used for indexing according to described indexing units are obtained corresponding each user's international mobile subscriber identity;
The paging subelement is used for the international mobile subscriber identity that obtains each user that subelement gets access to according to described, successively other each users in this group is initiated paging;
Page response receives subelement, is used to receive the page-response message that other each users in this group feed back to network side behind the beep-page message that receives described paging subelement initiation;
Judgment sub-unit is used for judging whether to have distributed group-calling channel for this user who feeds back page-response message at each user who receives subelement feedback page-response message to described page response;
The first channel assignment subelement is used in described judgment sub-unit judged result when being, this user of assignment is to the group-calling channel that has distributed;
The channel allocation subelement is used in described judgment sub-unit judged result for not the time, for this user distributes group-calling channel; With
Second channel assignment subset unit is used for this user is assigned to the group-calling channel that described channel allocation subelement distributes.
10. system as claimed in claim 8 is characterized in that, described network side also comprises:
Descending detecting unit is used for carrying out descending detection in the residing former sub-district of described listening user;
Second judging unit is used for the testing result according to described descending detecting unit, judges whether also there is listening user in this former sub-district;
The channel delete cells is used in the described second judgment unit judges result deleting the group-calling channel in this former sub-district for not the time.
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| CN200510105028A CN1852492B (en) | 2005-09-26 | 2005-09-26 | Group-calling set-up method and system |
| PCT/CN2006/001690 WO2007033554A1 (en) | 2005-09-26 | 2006-07-17 | A method and system for establishing group call |
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| CN200510105028A CN1852492B (en) | 2005-09-26 | 2005-09-26 | Group-calling set-up method and system |
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| CN1852492B true CN1852492B (en) | 2010-05-05 |
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| CN102196367B (en) * | 2010-03-05 | 2014-11-05 | 华为技术有限公司 | PPT service processing method, and device and system thereof |
| CN102802159B (en) * | 2011-05-25 | 2015-09-16 | 中兴通讯股份有限公司 | The method of adjustment that a kind of Common Control Channel configures, system and base station controller |
| CN103249008B (en) * | 2012-02-03 | 2018-10-26 | 上海中兴软件有限责任公司 | It listens the statistical method of user information, apparatus and system, listen user terminal |
| CN112312333B (en) * | 2020-11-02 | 2021-11-05 | 深圳市桑达无线通讯技术有限公司 | Group call processing control method for railway special mobile terminal |
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| FI92787C (en) * | 1993-03-30 | 1994-12-27 | Nokia Telecommunications Oy | Group call method, system controller and subscriber station in a radio system |
-
2005
- 2005-09-26 CN CN200510105028A patent/CN1852492B/en not_active Expired - Fee Related
-
2006
- 2006-07-17 WO PCT/CN2006/001690 patent/WO2007033554A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995008896A1 (en) * | 1993-09-21 | 1995-03-30 | Telstra Corporation Limited | A base station for a mobile telecommunications system |
| CN1130087C (en) * | 1997-11-04 | 2003-12-03 | 艾利森公司 | Method for auto answering call based on caller ID |
| US6456855B1 (en) * | 2000-08-29 | 2002-09-24 | Motorola, Inc. | Method and apparatus for establishing a group call session in a communication system |
Non-Patent Citations (4)
| Title |
|---|
| stage2.3GPP TS 03.68 v8.6.0.2005,3(0368860),全文. * |
| technical specification group core network andterminals * |
| voice group call service(VGCS) * |
| 同上. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1852492A (en) | 2006-10-25 |
| WO2007033554A1 (en) | 2007-03-29 |
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