CN101198107B - Group calling communication message transmission method, base station subsystem and group calling communication system - Google Patents
Group calling communication message transmission method, base station subsystem and group calling communication system Download PDFInfo
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- CN101198107B CN101198107B CN2006101574206A CN200610157420A CN101198107B CN 101198107 B CN101198107 B CN 101198107B CN 2006101574206 A CN2006101574206 A CN 2006101574206A CN 200610157420 A CN200610157420 A CN 200610157420A CN 101198107 B CN101198107 B CN 101198107B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a group calling communication message delivery method, a base station subsystem and a group calling communication system. In the group calling communication message delivery method, the base station subsystem sends a message including a notify list number on a packet associated control channel to ensure that a mobile station in a mode of packet transmission obtains the notify list number message related to the group calling; when a new group calling or a broadcast call is sent in a cell, the mobile station can get the changes in the notify list number value.
Description
Technical field
The present invention relates to moving communicating field, particularly the group calling communication technology.
Background technology
Voice group call service (Voice Group Call Service, be called for short " VGCS ") and Voice Broadcast Service (Voice Broadcast Service, be called for short " VBS ") all be the voice communication mode that participates in many ways in the moving communicating field, break through the limitation of point-to-point communication, can set up calling fast.These two kinds of business can be referred to as group calling (or group calling) business.
Briefly, VGCS will realize that exactly a plurality of people can talk, and more people can be used as the business of hearer (hearer's quantity is unrestricted).
The professional member who comprises two kinds of identity in the VGCS business, i.e. dispatcher and service-user.The dispatcher can be that the fixed network user also can be the mobile subscriber, by network is the designated lane participation group calling Speech Communication of its foundation, at existing GSM 800M digital cluster system (GSM Trunk 800M, abbreviation " GT800 ") in the standard, the VGCS business can not have dispatcher or maximum five dispatchers; Service-user refers to the mobile subscriber of signatory VGCS business, and quantity is not limit, and participates in the group calling Speech Communication by the group calling passage in the group call region.
The VGCS business only permits a service-user at any time and maximum five dispatchers talk simultaneously, and other are not in the service-user of saying speech phase and are called the group calling hearer.The group calling hearer can be by pressing PoC (the Push To Talk on the portable terminal, be called for short " PTT ") key, realize robbing the operation of reverse link traffic channel according to the principle of " First come first served ", successfully can obtain speaking right participation speech if rob reverse link traffic channel, other group callings hearer has only the operation that just can continue to rob reverse link traffic channel when reverse link traffic channel is idle.The dispatcher has the designated lane of oneself, can participate in speech at any time.
VGCS permission user is established to the one group of user's who belongs to a certain specified services district and group identifier (Group ID) calling, and dispatchers all during the calling can make a speech, but all service-users are seized a data feedback channel.Service area can be by some (MobileSwitching Center of same mobile switching centre that belong to, be called for short " MSC ") or the sub-district of different MS C form, each related cell has a group calling passage during calling, wherein up link is only used (group emission mode) for current speaker, all hearers wait on down link (group receive mode), and relevant group calling notification message is gone up broadcasting at notification channel NCH (Notification Channel).
Relate to the group calling of a plurality of MSC, the management that one of them MSC is responsible for calling out, we are referred to as Anchor MSC, and other MSC is Relay MSC.Anchor MSC is responsible for setting up all connections, is included in the connection of the designated cell of this MSC, relevant Relay MSC and dispatching desk, and passes through the distribution that a meeting bridge is finished speech.Relay MSC only need set up a link to Anchor MSC, and Relay MSC is responsible for the distribution of affiliated subdistrict down voice.
VBS and VGCS business are similar substantially, and the main difference part is: have only call initiator to talk during VBS calls out, other members are in accepting state all the time.Spoken user need not be by the PTT key.
GPRS (General Packet Radio Service, be called for short " GPRS ") be a kind of mobile packet data bearer service that development is come out on the existing global system for mobile communications basis of (Global System for Mobile communication is called for short " GSM ").GPRS introduces the packet switching functional entity in the GSM digital mobile communication network, with the transfer of data of supporting to adopt packet mode to carry out.Gprs system can be regarded as the business that original GSM circuit switching system is carried out and expands, and utilizes portable terminal to insert the demand of Internet or other packet data network to satisfy the user.
The wireless channel that is used for gprs service is called Packet Data Channel (Packet Data Channel is called for short " PDCH ").
Referring to table 1, constitute several logic channel abridged tables of PDCH.
Table 1
PDCH comprises following several logic channel:
1) Packet Common Control CHannel (Packet Common Control Channel is called for short " PCCCH "), it comprises the logic channel with the public control signaling of next group transmission:
Packet Random Access Channel (Packet Random Access Channel is called for short " PRACH "), this channel only is present in up link;
Packet paging channel (Packet Paging Channel, be called for short " PPCH "), this channel only is present in down link, is used for mobile paging station (Mobile Station before downlink data transmission, be called for short " MS "), can be used for the paging circuit-switched service;
Grouping access permission channel (Packet Access Grant Channel is called for short " PAGCH "), this channel only is present in down link, and before sending grouping, network sends resource allocation information by this channel to MS at the transmitted in packets establishment stage;
2) Packet Broadcast Control CHannel (Packet Broadcast Control Channel is called for short " PBCCH "), this channel only is present in down link, is used for the distinctive system information of broadcasts packet data;
3) packet traffic channel (Packet Traffic Channel is called for short " PTCH "), it comprises with lower channel:
Packet data traffic channel (Packet Data Traffic Channel is called for short " PDTCH "), this channel is used for transmitting grouped data;
Grouping associated control channel (Packet Associated Control Channel, be called for short " PACCH "), this channel carries the signaling information relevant with specific MS, these signaling informations comprise contents such as affirmation, power control, this channel also carries resource allocation and heavy assignment messages, comprise the capacity of PDTCH of distribution and the capacity of the PACCH that will distribute, when PACCH shares with PDTCH, distributed to the resource of MS when shared exactly.In addition, when a MS is carrying out transmitted in packets, can use PACCH to carry out the transmission of circuit-switched service.
When MS carries out gprs service, to carry out GPRS earlier and adhere to (GPRS-attached).The MS that GPRS adheres to may be in two kinds of patterns:
Packet idle mode: network does not distribute Temporary Block Flow (Temporary Block Flow is called for short " TBF ") to give MS, if upper layer application will send user data, MS need apply for setting up one or more TBF and forward packet transfer mode to.
Packet transfer mode: network allocation one or more TBF give MS, MS can pass through the PDTCH transmitting user data.The travelling carriage that is in packet transfer mode will be monitored PACCH simultaneously.
MS under the GPRS can be divided into following three classes:
Category-A: can be simultaneously attached on GPRS network and the GSM network, and can carry out packet switching service and circuit-switched service simultaneously;
Category-B: can be simultaneously attached on GPRS network and the GSM network, but can not carry out circuit switching and packet switching service simultaneously;
The C class: can not be simultaneously attached on GPRS network and the GSM network, gprs service and circuit-switched service only can be selected wherein a kind of business, and not choosing professional state is off-state, can not realize connecting.
Hereinafter relate generally to category-B MS.
Network operation mode under the GPRS can be divided into following three classes.
Pattern I: if cell configuration PCCCH, the paging of the paging of Packet Service and Circuit Service all issues on PPCH so, MS only need monitor the paging on the PPCH; If the sub-district does not dispose PCCCH, the paging of Packet Service and the paging of Circuit Service are all at Common Control Channel (CommonControl Channel, abbreviation " CCCH ") paging channel issued on (Paging Channel is called for short " PCH "), and MS only need monitor the paging on the PCH; If distributed PTCH to MS, then the paging to this MS just issues on PACCH.
Pattern II: do not dispose PPCH in the sub-district, the paging of Circuit Service and the paging of Packet Service all issue on PCH, and MS only need monitor the paging on the PCH; Even distributed PTCH to MS, the paging of Circuit Service also only issues on PCH.
Pattern III: the paging of Circuit Service issues on PCH, and the Packet Service paging issues on PPCH or PCH, and travelling carriage need be monitored PCH and two channels of PPCH.
After group calling/broadcasting is initiated, will send relevant information at following channels:
1) notification channel (Notification Channel is called for short " NCH ");
NCH is the part of CCCH, and group calling notification message (comprising group calling ID, other attribute of group-calling channel description and group calling) periodically sends by NCH; The MS that is in the non-GPRS attachment state of idle condition (Idle) will monitor NCH; The MS that is in packet idle mode will monitor NCH under network operation mode II and III, may not monitor NCH under network operation mode I.
2) Fast Associated Control Channel (Fast Associated Control Channel is called for short " FACCH ");
Base station sub-system (Base Station Subsystem, be called for short " BSS ") send the group calling notification message on the FACCH of the Circuit Service channel of sub-district that may be in group call region and (comprise group calling ID, other attribute of group-calling channel description and group calling), be in dedicated mode, the MS of group sending mode and group receive mode can receive the notification message on the FACCH; If MS determines to belong to the group calling/broadcasting of correspondence, can leave current calling and add new group calling/broadcasting.
Notify list number (Notification List Number is called for short " NLN ") is the counter of a mould 4, and when having new group calling/broadcast ﹠ call to initiate in the sub-district, the NLN of this sub-district correspondence just adds 1.
NLN also sends on lower channel except sending on NCH: PCH, PPCH and slow associated control channel (Slow Associated Control Channel is called for short " SACCH ").
Simplifying under the NCH listen mode (Reduced NCH monitoring mechanism), initial MS monitors NCH, and also to the last the NLN of two group calling notification messages is identical, and MS stops to monitor NCH.When MS listens to other channel, such as: PPCH, the NLN on the SACCH and the NLN of preservation just change the group calling notification message that goes to monitor on the NCH not simultaneously.
In the prior art, when the category-B MS under the GPRS is in packet transfer mode, can monitor PTCH, but can not monitor CCCH, PCCCH or SACCH, thereby can't know the information that group calling is relevant, such as: the NLN value.Specifically, when having new group calling/broadcast ﹠ call to initiate in the sub-district, variation has taken place in the NLN value, when being in packet transfer mode owing to the category-B MS under the GPRS, MS only can monitor PTCH, and can not monitor CCCH, PCCCH or SACCH, so will have no way of knowing that the NLN value changes.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of group calling communication message transmission method, base station sub-system and group cal communication system, make the travelling carriage that is in packet transfer mode also can know the notify list number information relevant with group calling, when having new group calling/broadcast ﹠ call to initiate in the sub-district, travelling carriage just can be known the situation of change of notify list number value.
For achieving the above object, one embodiment of the present of invention provide a kind of group calling communication message transmission method, comprise step: base station sub-system BSS sends the message that comprises notify list number NLN to the mobile station MS that is in packet transfer mode on packet associated control channel PACCH; Described MS can not carry out circuit switching and packet switching service simultaneously simultaneously attached on GPRS network and the GSM network.
For achieving the above object, one embodiment of the present of invention provide a kind of base station sub-system, comprise message transmission module, be used on packet associated control channel PACCH, sending the message that comprises notify list number NLN to the mobile station MS that is in packet transfer mode; Described MS can not carry out circuit switching and packet switching service simultaneously simultaneously attached on GPRS network and the GSM network.
For achieving the above object, one embodiment of the present of invention provide a kind of group cal communication system, comprise base station sub-system BSS and mobile station MS, BSS comprises message transmission module, is used for sending the message that comprises notify list number NLN to the MS that is in packet transfer mode on packet associated control channel PACCH; Described MS can not carry out circuit switching and packet switching service simultaneously simultaneously attached on GPRS network and the GSM network.
MS comprises message sink module and judge module, the message acceptance module is used to receive the message of the above-mentioned NLN of comprising, and judge module is used to judge whether the NLN of NLN and MS self preservation that MS receives is identical, if inequality, then MS leaves packet transfer mode, enters packet idle mode.
Compare prior art, in the technical scheme of the embodiment of the invention, on packet associated control channel, send the message that comprises the notify list number by base station sub-system, make the travelling carriage that is in packet transfer mode also can know the notify list number information relevant with group calling, when having new group calling/broadcast ﹠ call to initiate in the sub-district, travelling carriage just can be known the situation of change of notify list number value.
Description of drawings
Fig. 1 is the schematic flow sheet of the transmission group calling communication message of the preferred embodiment one according to the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
In a kind of group calling communication message transmission method that the embodiment of the invention provides, base station sub-system sends the message that comprises the notify list number on packet associated control channel, make the travelling carriage that is in packet transfer mode also can know the notify list number information relevant with group calling, when having new group calling/broadcast ﹠ call to initiate in the sub-district, travelling carriage just can be known the situation of change of notify list number value.
MS in the present embodiment mainly is meant the category-B MS under the GPRS, gets final product the while attached on GPRS network and the GSM network, but can not carry out the MS of circuit switching and packet switching service simultaneously.
Fig. 1 is the schematic flow sheet of the transmission group calling communication message of the preferred embodiment one according to the present invention.
Base station sub-system BSS sends the message that comprises the notify list number on packet associated control channel PACCH.
Notify list number NLN can be a mould 4, also can be mould 6, mould 8, perhaps the natural counter of mould.
The message of the above-mentioned NLN of comprising can be grouping system message 13, also can be other grouping system message 1 that sends on PACCH, grouping system message 2, grouping system message 3, grouping system message 3bis, grouping system message 3ter, grouping system message 3ter, grouping system message 6, grouping system message 7, grouping system message 8, grouping system message 14, grouping system message 15, grouping system message 16 etc.
BSS periodically sends the message that comprises NLN, also can be irregularly or at given set time point to send the message that comprises NLN.
When certain sub-district had new group calling to initiate, BSS changed the NLN value of the PACCH channel of this sub-district, such as: add 1 certainly, and the NLN after will changing sends to the MS of the PDTCH that uses this PACCH correspondence, MS at this moment is in packet transfer mode.
MS receives the message that comprises NLN that BSS sends, and NLN that receives and the NLN that self preserves are compared, if these two NLN values are inequality, then expression has new group calling to initiate, and then MS leaves packet transfer mode, enters packet idle mode.
The NLN that MS self preserves comes from the message that sends before PACCH, NCH, PCH or the PPCH.
In order to reduce influence to the transmitted in packets business, when packet transfer mode is left in the MS decision, can postpone to leave packet transfer mode again after time of one section setting, enter packet idle mode.If in the setting-up time of this section, MS has finished the GPRS transfer of data, then can leave packet transfer mode at once, enters packet idle mode.
BSS sends in the message that comprises NLN on PACCH, can also on PACCH, send the message of the group id information that comprises ongoing all group callings of current area, this message can be with the message that comprises NLN be same message, also can be different messages.The MS that is in packet transfer mode receives this group id information, if exist group calling relevant with MS, then MS leaves packet transfer mode, enters packet idle mode.
BSS sends in the message that comprises NLN on PACCH, can also on PACCH, send the message of the limit priority information that comprises ongoing all group callings of current area, this message can be with the message that comprises NLN be same message, also can be different messages.The MS that is in packet transfer mode receives this limit priority information, if exist the priority of group calling to be higher than the priority that this MS sets, then MS leaves packet transfer mode, enters packet idle mode.
BSS sends on PACCH in the message that comprises NLN, can also send the message of the emergency mode status indicator information that comprises current area on PACCH, this message can be with the message that comprises NLN be same message, also can be different messages.The MS that is in packet transfer mode receives this emergency mode status indicator information, and judges whether to leave packet transfer mode according to this information, enters packet idle mode.
The MS that enters packet idle mode monitors the group calling notification message on the notification channel NCH, if MS belongs to the group calling/broadcast ﹠ call of described group calling notification message correspondence, then MS can add or ask the described group calling/broadcast ﹠ call of adding.
If MS does not belong to the group calling/broadcast ﹠ call of described group calling notification message correspondence, then MS upgrades the NLN that self preserves, and the NLN that self preserves before promptly replacing it with the current NLN that receives returns packet transfer mode then.
When the GPRS network operator scheme is pattern I, if that is: cell configuration PCCCH, the paging of the paging of Packet Service and Circuit Service all issues on PPCH so, MS only need monitor the paging on the PPCH; If the sub-district does not dispose PCCCH, the paging of Packet Service and the paging of Circuit Service all issue on the PCH of CCCH, and MS only need monitor the paging on the PCH; If distributed PTCH to MS, then the paging to this MS just issues on PACCH.When the MS that is in packet idle mode will monitor PCCCH during at network operation mode I, before adding group calling, the NCH channel that MS need forward CCCH to gets on to monitor the group calling notification message, could add group calling then.Can cause temporal delay like this.The cycle of PCCCH is 52 multiframe periods, and according to top mode, MS may need the 240 milliseconds of variations that just can know NLN at most, and promptly knowing has new group calling to take place in the sub-district.
For these reasons, BSS can send the group calling notification message on PPCH, enters the MS of packet idle mode because can monitor PCCCH, so can listen to the group calling notification message on the PPCH.If be in group calling/broadcast ﹠ call that the MS of packet idle mode belongs to group calling notification message correspondence, then MS can add or ask to add described group calling/broadcast ﹠ call.
If MS does not belong to the group calling/broadcast ﹠ call of group calling notification message correspondence, then MS upgrades the NLN that self preserves, and the NLN that self preserves before promptly replacing it with the current NLN that receives returns packet transfer mode then.
Preferred embodiment two of the present invention: a kind of base station sub-system, comprise message transmission module, be used on packet associated control channel PACCH, sending the message that comprises notify list number NLN.This message transmission module, be further used on PACCH, sending message, this message comprises the group id information of ongoing all group callings of current area, and/or the limit priority information of ongoing all group callings of current area, and/or the emergency mode status indicator information of current area.
Preferred embodiment three of the present invention: a kind of group cal communication system, comprise base station sub-system BSS and mobile station MS, BSS comprises message transmission module, and this module is used for sending the message that comprises notify list number NLN on packet associated control channel PACCH; MS comprises message sink module and judge module, the message acceptance module is used to receive the message of the above-mentioned NLN of comprising, and judge module is used to judge whether the NLN of NLN and MS self preservation that MS receives is identical, if inequality, then MS leaves packet transfer mode, enters packet idle mode.
The message transmission module of BSS can also be used for sending the group calling notification message on packet paging channel PPCH, monitors the group calling notification message on the PPCH when MS is in packet idle mode.If be in group calling/broadcast ﹠ call that the MS of packet idle mode belongs to described group calling notification message correspondence, then MS can add or ask to add described group calling/broadcast ﹠ call.
The message transmission module of BSS can also be used for sending message on PACCH, this message comprises the group id information of ongoing all group callings of current area, and/or the limit priority information of ongoing all group callings of current area, and/or the emergency mode status indicator information of current area.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (17)
1. a group calling communication message transmission method is characterized in that, comprises following steps: base station sub-system BSS sends the message that comprises notify list number NLN to the mobile station MS that is in packet transfer mode on packet associated control channel PACCH; Described MS can not carry out circuit switching and packet switching service simultaneously simultaneously attached on general packet radio service (GPRS) network and the global system for mobile communications GSM network.
2. method according to claim 1 is characterized in that, further comprises step:
The described mobile station MS that is in packet transfer mode receives the message of the described NLN of comprising;
If the NLN that NLN that described MS receives and MS self preserve is inequality, then described MS leaves packet transfer mode, enters packet idle mode.
3. method according to claim 2 is characterized in that, further comprises step:
The described MS that enters packet idle mode monitors the group calling notification message on the notification channel NCH;
If the described MS that is in packet idle mode belongs to the group calling/broadcast ﹠ call of described group calling notification message correspondence, then described MS adds or request adds described group calling/broadcast ﹠ call.
4. method according to claim 3 is characterized in that, further comprises step:
If the described MS that is in packet idle mode does not belong to the group calling/broadcast ﹠ call of described group calling notification message correspondence, then described MS upgrades the NLN that self preserves, and returns packet transfer mode.
5. method according to claim 2 is characterized in that, further comprises step:
BSS sends the group calling notification message on packet paging channel PPCH;
The described MS that enters packet idle mode monitors the group calling notification message on the described PPCH;
If the described MS that is in packet idle mode belongs to the group calling/broadcast ﹠ call of described group calling notification message correspondence, then described MS adds or request adds described group calling/broadcast ﹠ call.
6. method according to claim 5 is characterized in that, further comprises step:
If the described MS that is in packet idle mode does not belong to the group calling/broadcast ﹠ call of described group calling notification message correspondence, then described MS upgrades the NLN that self preserves, and returns packet transfer mode.
7. method according to claim 2 is characterized in that, described step MS leaves packet transfer mode and further comprises step:
Leave packet transfer mode again after the time of one section setting of described MS delay, enter packet idle mode;
If in described setting-up time, described MS has finished the GPRS transfer of data, then leaves packet transfer mode at once, enters packet idle mode.
8. method according to claim 1 is characterized in that, described BSS periodically sends the message that comprises NLN on PACCH.
9. method according to claim 1 is characterized in that, the message of the described NLN of comprising is grouping system message 13.
10. according to each described method of claim 1～9, it is characterized in that, further comprise step:
BSS sends message on PACCH, described message comprises the group id information of ongoing all group callings of current area;
The described MS that is in packet transfer mode receives described group of id information;
If exist group calling relevant with described MS, then described MS leaves packet transfer mode, enters packet idle mode.
11. according to each described method of claim 1～9, it is characterized in that, further comprise step:
BSS sends message on PACCH, described message comprises the limit priority information of ongoing all group callings of current area;
The described MS that is in packet transfer mode receives the limit priority information of described all group callings;
If exist the priority of group calling to be higher than the priority that described MS sets, then described MS leaves packet transfer mode, enters packet idle mode.
12. according to each described method of claim 1～9, it is characterized in that, further comprise step:
BSS sends message on PACCH, described message comprises the emergency mode status indicator information of current area;
The described travelling carriage that is in packet transfer mode receives the emergency mode status indicator information of described current area;
Described travelling carriage judges whether to leave packet transfer mode according to described information, enters packet idle mode.
13. a base station sub-system is characterized in that, comprises message transmission module, is used for sending the message that comprises notify list number NLN to the mobile station MS that is in packet transfer mode on packet associated control channel PACCH; Described MS can not carry out circuit switching and packet switching service simultaneously simultaneously attached on GPRS network and the GSM network.
14. base station sub-system according to claim 13 is characterized in that, described message transmission module is further used for sending message on PACCH, and described message comprises the group id information of ongoing all group callings of current area, and/or
Described message comprises the limit priority information of ongoing all group callings of current area, and/or
Described message comprises the emergency mode status indicator information of current area.
15. a group cal communication system is characterized in that, comprises base station sub-system BSS and mobile station MS,
Described BSS comprises message transmission module, is used for sending the message that comprises notify list number NLN to the MS that is in packet transfer mode on packet associated control channel PACCH; Described MS can not carry out circuit switching and packet switching service simultaneously simultaneously attached on GPRS network and the GSM network;
Described MS comprises message sink module and judge module, described message acceptance module is used to receive the message of the described NLN of comprising, described judge module is used to judge whether the NLN of NLN and described MS self preservation that described MS receives is identical, if it is inequality, then described MS leaves packet transfer mode, enters packet idle mode.
16. group cal communication system according to claim 15 is characterized in that,
Described message transmission module is further used for sending the group calling notification message on packet paging channel PPCH;
Described MS monitors the group calling notification message on the described PPCH when being in packet idle mode;
If the described MS that is in packet idle mode belongs to the group calling/broadcast ﹠ call of described group calling notification message correspondence, then described MS adds or request adds described group calling/broadcast ﹠ call.
17. according to claim 15 or 16 each described group cal communication systems, it is characterized in that described message transmission module is further used for sending message on PACCH, described message comprises the group id information of ongoing all group callings of current area, and/or
Described message comprises the limit priority information of ongoing all group callings of current area, and/or
Described message comprises the emergency mode status indicator information of current area.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101574206A CN101198107B (en) | 2006-12-04 | 2006-12-04 | Group calling communication message transmission method, base station subsystem and group calling communication system |
| PCT/CN2007/071160 WO2008067755A1 (en) | 2006-12-04 | 2007-12-03 | Sending method of group call communication message, base-station subsystem and group call communication system |
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| CN2006101574206A CN101198107B (en) | 2006-12-04 | 2006-12-04 | Group calling communication message transmission method, base station subsystem and group calling communication system |
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| CN101720028A (en) * | 2009-12-01 | 2010-06-02 | 北京中星微电子有限公司 | Method and system for realizing voice broadcast during video monitoring |
| CN102137434B (en) * | 2010-01-26 | 2014-04-16 | 华为终端有限公司 | Method for acquiring neighbor system message as well as method and device for sending neighbor system message |
| CN102202266B (en) * | 2011-06-27 | 2013-08-14 | 深圳市桑达无线通讯技术有限公司 | Call information updating method for trunking communication system terminal |
| CN102917316A (en) * | 2012-10-31 | 2013-02-06 | 深圳市桑达无线通讯技术有限公司 | Group calling/broadcasting method in terminal monitoring cell |
| CN105491536A (en) | 2014-09-23 | 2016-04-13 | 中兴通讯股份有限公司 | General calling method and system under broadband trunking system and related devices |
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2007
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220788A (en) * | 1997-03-27 | 1999-06-23 | 诺基亚电信公司 | Allocation of control channel in packet radio network |
| EP1349415A1 (en) * | 2002-03-25 | 2003-10-01 | Sagem SA | Method for establishing a group call in a GPRS telecommunications system |
| CN1523835A (en) * | 2003-09-05 | 2004-08-25 | 中兴通讯股份有限公司 | A downlink data transmission re-assignment method in GPRS system |
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| CN101198107A (en) | 2008-06-11 |
| WO2008067755A1 (en) | 2008-06-12 |
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