CN102802122A - Downlink detection method and device for group call channel, and base station - Google Patents
Downlink detection method and device for group call channel, and base station Download PDFInfo
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- CN102802122A CN102802122A CN2011101371838A CN201110137183A CN102802122A CN 102802122 A CN102802122 A CN 102802122A CN 2011101371838 A CN2011101371838 A CN 2011101371838A CN 201110137183 A CN201110137183 A CN 201110137183A CN 102802122 A CN102802122 A CN 102802122A
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Abstract
The invention provides a downlink detection method and device for a group call channel, and a base station, and belongs to the field of mobile communication. The downlink detection method for the group call channel comprises steps as follows: the base station receives an uplink access message sent by a mobile station, wherein the uplink access message is not sent until the mobile station monitors an uplink idle message which is sent by the group call channel and used for downlink detection; the base station judges whether the uplink access message is effective; when the uplink access message is effective, the base station sends a listener detection message to a base station controller, so that the base station controller can retain the group call channel; and when the uplink access message is ineffective, the base station abandons the uplink access message. According to the embodiment of the invention, the problem that the bandwidth of an Abis port is wasted during downlink detection in a group call service can be solved. The technical scheme is suitable for group call services.
Description
Technical field
The present invention relates to moving communicating field, be meant a kind of descending detection method, device and base station of group-calling channel especially.
Background technology
Voice group call service (Voice Group Call Service; VGCS) and Voice Broadcast Service (Voice Broadcast Service; VBS) all be the speech communication mode of participating in many ways; Broken 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 service.
The member who comprises two kinds of identity in the group-calling service, i.e. dispatcher and domestic consumer.The dispatcher can be the fixed network user, like dispatching desk, also can be the mobile subscriber; Zero, one or a limited number of dispatcher can be arranged in the group-calling service; Domestic consumer has referred to be scheduled to the mobile subscriber of VGCS/VBS, and quantity is not limit, according to whether being divided into speaker (talker) and hearer (Listener) again in speech.
A specific group calling communication is unique definite by group function code and group call region.Group function code and group call region are called group call reference altogether, i.e. the unique definite group calling communication of group call reference.The function of this group of group function code sign is promptly by member's reference of which identity; A user a plurality of groups of function codes of can contracting simultaneously, and different priority is set to them.Group call region is meant the scope that group calling communication covers, and is base unit with the wireless area, can be made up of one or several sub-district, and the sub-district of forming group call region is called group call cell.
What group-calling service used is the common downlink broadcast capability; This function allows to be in the hearer who belongs to same group of function code in the same group call cell and on a Traffic Channel, listens to group calling; Number of users is restriction not, can save air interface and the available resources on the signaling link between network element in this way.
In the GSMR system, because the hearer can add and withdraw from group calling at any time, possibly occur not having the hearer to exist on the group-calling channel like this, cause the resource utilization of system lower; Stipulated a kind of descending detection method of group-calling channel in the existing protocol: network can be as required up busy in; On group-calling channel, send Uplink Free message; " uplink access request " field is " Mobile station shall perform the uplink reply procedure " in the message, promptly requires the hearer to reply.If current area does not have the hearer monitoring group calling, then multicall channel releasing is avoided waste of radio resources; Otherwise, if there is the hearer monitoring group calling, when the hearer receives the Uplink Free message that requires to reply, can send the Uplink Access message of replying, after network is received, think that then there is the hearer sub-district, do not discharge the group-calling channel of this sub-district.
Descending testing process figure when there is the hearer in Fig. 1 for sub-district in the prior art.Detailed elaboration to this flow process is following:
Step 101: (Base Station Subsystem BSS) issues Uplink Free message to base station sub-system;
" uplink access request " field is " Mobile station shall perform the uplink reply procedure " in the message, promptly requires the hearer to reply.
Step 102:MS (Mobile station, travelling carriage) receives above-mentioned Uplink Free message, reports the Uplink Access message of replying;
Wherein, the hearer sends the process of Uplink Access (Reply on uplink access request) message and is: after receiving Uplink Free message, the random delay that random wait is 0～20 millisecond sends a Uplink Access message; And then wait for 100 milliseconds of random delay that add 0 to 20 millisecond, send a Uplink Access message once more.
Step 103: base station (Base Transceiver Station; BTS) receive Uplink Access (Reply on uplink access request) message; (Base Station Controller BSC) reports Listener Detection message to base station controller;
Step 104: base station controller is received Listener Detection message, thinks that there is the hearer sub-district, does not discharge the group-calling channel of this sub-district.
In step 102, a hearer can send two Uplink Access message, and when having a plurality of hearer on the group-calling channel, BSC can receive a plurality of useless Listener Detection message, the bandwidth of serious waste Abis mouth.
Summary of the invention
The technical problem that the present invention will solve provides a kind of descending detection method, device and base station of group-calling channel; Can solve when carrying out descending detection in the group-calling service; Base station controller is received many useless Listener Detection message, causes the problem of Abis port band width waste.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme following:
On the one hand, a kind of descending detection method of group-calling channel is provided, comprises:
The up link that the base station receiving mobile sends inserts Uplink Access message, and said Uplink Access message is that said travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Whether the said Uplink Access of said base station judges message is effective;
When said Uplink Access message was effective, said base station was sent the hearer to base station controller and is detected Listener Detection message, so that said base station controller keeps said group-calling channel; When said UplinkAccess message was invalid, said base station abandoned said Uplink Access message.
Wherein, whether the said Uplink Access of said base station judges message effectively comprises:
Whether the said Uplink Access of said base station judges message is the UplinkAccess message of the corresponding said Uplink Free message that receives first;
If the said Uplink Access of then said base station judges message is effective; Otherwise the said Uplink Access of said base station judges message is invalid.
Wherein, Said base station comprises the flag of a corresponding said group-calling channel; The initial value of said flag is true, and whether the said Uplink Access of said base station judges message is that the UplinkAccess message of the corresponding said Uplink Free message that receives first comprises:
Said base station receives the Uplink Access message of corresponding said Uplink Free message, and said flag is made as vacation, starts timer, and behind said timer expiry, said flag is made as very;
When said flag is a true time, the Uplink Access message that said base station receives is the UplinkAccess message of the corresponding said Uplink Free message that receives first.
Wherein, be limited to 140 milliseconds under the timing of said timer, be limited to the minimum interval of the double Uplink of issuing Free message in the timing of said timer.
The embodiment of the invention also provides a kind of descending checkout gear of group-calling channel, comprising:
Receiver module; Be used for the up link access Uplink Access message that receiving mobile sends, said Uplink Access message is that said travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Judge module is used to judge whether said Uplink Access message is effective;
Processing module is used for when said Uplink Access message is effective, sends the hearer to base station controller and detects Listener Detection message, so that said base station controller keeps said group-calling channel; When said Uplink Access message is invalid, abandon said Uplink Access message.
Wherein, said judge module is used to specifically to judge that whether said Uplink Access message be the Uplink Access message of the corresponding said Uplink Free message that receives first; If judge that then said Uplink Access message is effective; Otherwise judge that said Uplink Access message is invalid.
Wherein, said base station comprises the flag of a corresponding said group-calling channel, and the initial value of said flag is true, and said judge module comprises:
The unit is set, is used for after said receiver module receives the UplinkAccess message of corresponding said Uplink Free message, said flag being made as vacation, start timer, and behind said timer expiry, said flag is made as very;
Judging unit, being used in said flag is true time, judges that UplinkAccess message that said receiver module receives is the Uplink Access message of the corresponding said Uplink Free message that receives first.
The embodiment of the invention also provides a kind of base station, comprising:
Receiver module; Be used for the up link access Uplink Access message through the receiving port receiving mobile transmission of base station, said Uplink Access message is that said travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Judge module is used to judge whether said Uplink Access message is effective;
Processing module is used for when said Uplink Access message is effective, sends the hearer through the transmitter end of base station mouth to base station controller and detects Listener Detection message, so that said base station controller keeps said group-calling channel; When said Uplink Access message is invalid, abandons said up link and insert message.
Wherein, said judge module is used to specifically to judge that whether said Uplink Access message be the Uplink Access message of the corresponding said Uplink Free message that receives first; If judge that then said Uplink Access message is effective; Otherwise judge that said Uplink Access message is invalid.
Wherein, said base station comprises the flag of a corresponding said group-calling channel, and the initial value of said flag is true, and said judge module comprises:
The unit is set, is used for after said receiver module receives the UplinkAccess message of corresponding said Uplink Free message, said flag being made as vacation, start timer, and behind said timer expiry, said flag is made as very;
Judging unit, being used in said flag is true time, judges that UplinkAccess message that said receiver module receives is the Uplink Access message of the corresponding said Uplink Free message that receives first.
Embodiments of the invention have following beneficial effect:
In the such scheme, the base station judges at first whether this up link inserts message effective after the up link that receives the travelling carriage transmission inserts message; If it is effective that this up link inserts message, hearer's detect-message is just sent to base station controller in the base station, makes base station controller keep group-calling channel; When up link access message is invalid; The base station directly abandons this up link and inserts message, inserts message thereby avoid sending useless up link to base station controller, has saved the Abis port band width.
Description of drawings
The schematic flow sheet that Fig. 1 carries out descending detection for group-calling channel in the prior art;
Fig. 2 is the schematic flow sheet of descending detection method of the group-calling channel of the embodiment of the invention;
Fig. 3 is the structural representation of descending checkout gear of the group-calling channel of the embodiment of the invention;
Fig. 4 is another schematic flow sheet of descending detection method of the group-calling channel of the embodiment of the invention.
Embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, will combine accompanying drawing and specific embodiment to be described in detail below.
Embodiments of the invention are when carrying out descending detection on the group-calling channel in the prior art; The problem that the bandwidth waste of Abis mouth is serious; A kind of descending detection method, device and base station of group-calling channel are provided; Can solve when carrying out descending detection in the group-calling service, base station controller is received many useless Listener Detection message, causes the problem of Abis port band width waste.
Fig. 2 is the schematic flow sheet of descending detection method of the group-calling channel of the embodiment of the invention, and as shown in Figure 2, present embodiment comprises:
Step 201: the up link that the base station receiving mobile sends inserts Uplink Access message, and UplinkAccess message is that travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Step 202: whether base station judges Uplink Access message is effective;
Step 203: when Uplink Access message was effective, the base station was sent the hearer to base station controller and is detected Listener Detection message, so that base station controller keeps group-calling channel; When Uplink Access message was invalid, the base station abandoned Uplink Access message.
The descending detection method of group-calling channel of the present invention; The base station judges at first whether this up link inserts message effective after the up link that receives the travelling carriage transmission inserts message, effective if this up link inserts message; Hearer's detect-message is just sent to base station controller in the base station; Make base station controller keep group-calling channel, when up link access message was invalid, the base station directly abandoned this up link and inserts message; Thereby avoid sending useless up link and insert message, saved the Abis port band width to base station controller.
Fig. 3 is the structural representation of descending checkout gear of the group-calling channel of the embodiment of the invention, and as shown in Figure 3, present embodiment comprises:
Receiver module 30; Be used for the up link access Uplink Access message that receiving mobile sends, Uplink Access message is that travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Judge module 31 is used to judge whether Uplink Access message is effective;
Processing module 32 is used for when Uplink Access message is effective, sends the hearer to base station controller and detects Listener Detection message, so that base station controller keeps group-calling channel; When Uplink Access message is invalid, abandon Uplink Access message.
Wherein, judge module 31 is used to specifically to judge that whether Uplink Access message be the Uplink Access message of the corresponding Uplink Free message that receives first; If judge that then Uplink Access message is effective; Otherwise judge that UplinkAccess message is invalid.
Wherein, the base station comprises the flag of a corresponding group-calling channel, and the initial value of flag is true, and judge module comprises:
The unit is set, is used for after receiver module receives the Uplink Access message of corresponding Uplink Free message, flag being made as vacation, start timer, and behind timer expiry, flag is made as very;
Judging unit, being used in flag is true time, judges that Uplink Access message that receiver module receives is the UplinkAccess message of the corresponding Uplink Free message that receives first.
The descending checkout gear of group-calling channel of the present invention; The base station judges at first whether this up link inserts message effective after the up link that receives the travelling carriage transmission inserts message, effective if this up link inserts message; Hearer's detect-message is just sent to base station controller in the base station; Make base station controller keep group-calling channel, when up link access message was invalid, the base station directly abandoned this up link and inserts message; Thereby avoid sending useless up link and insert message, saved the Abis port band width to base station controller.
The embodiment of the invention also provides a kind of base station, comprising:
Receiver module; Be used for the up link access Uplink Access message through the receiving port receiving mobile transmission of base station, Uplink Access message is that travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Judge module is used to judge whether Uplink Access message is effective;
Processing module is used for when Uplink Access message is effective, sends the hearer through the transmitter end of base station mouth to base station controller and detects Listener Detection message, so that base station controller keeps group-calling channel; When Uplink Access message is invalid, abandons up link and insert message.
Particularly, judge module is used to judge that whether Uplink Access message be the Uplink Access message of the corresponding Uplink Free message that receives first; If judge that then Uplink Access message is effective; Otherwise judge that Uplink Access message is invalid.
Wherein, the base station comprises the flag of a corresponding group-calling channel, and the initial value of flag is true, and judge module comprises:
The unit is set, is used for after receiver module receives the Uplink Access message of corresponding Uplink Free message, flag being made as vacation, start timer, and behind timer expiry, flag is made as very;
Judging unit, being used in flag is true time, judges that Uplink Access message that receiver module receives is the Uplink Access message of the corresponding Uplink Free message that receives first.
Base station of the present invention after the up link that receives the travelling carriage transmission inserts message, judges at first whether this up link inserts message effective; If it is effective that this up link inserts message, hearer's detect-message is just sent to base station controller in the base station, makes base station controller keep group-calling channel; When up link access message is invalid; The base station directly abandons this up link and inserts message, inserts message thereby avoid sending useless up link to base station controller, has saved the Abis port band width.
Below in conjunction with Fig. 4, the descending detection method of group-calling channel of the present invention is further specified:
Step 401:BSS (Base Station Subsystem, base station sub-system) issues Uplink Free message on group-calling channel;
" uplink access request " field is " Mobile station shall perform the uplink reply procedure " in the Uplink Free message, promptly requires the hearer to reply;
Step 402:MS (Mobile station, travelling carriage) receives above-mentioned Uplink Free message, reports the Uplink Access message of replying to BTS (Base Transceiver Station, base station);
Wherein, The process that the hearer sends Uplink Access (Reply on uplink access request) message is: after receiving Uplink Free message; The random delay that random wait is one 0～20 millisecond; Send a Uplink Access message to BTS, and then wait for 100 milliseconds of random delay that add 0 to 20 millisecond, send a Uplink Access message to BTS once more;
Step 403:BTS receives Uplink Access message, need to judge whether to handle, and promptly judges the value of self identification position bNeedDeal, if value is true (TRUE), then needs to handle, and changes step 404, otherwise changes step 407; Wherein, the initial value of bNeedDeal is true;
Step 404:BTS reports Listener Detection message to BSC (Base Station Controller, base station controller);
After BSC receives Listener Detection message, think that there is the hearer sub-district, do not discharge the group-calling channel of this sub-district;
Step 405: the value of putting bNeedDeal is false (FALSE), receives that Uplink Access message then abandon in promptly specific a period of time at the back, does not process; Timer Timer is set;
Step 406:MS reports the Uplink Access message of replying;
Step 407:BTS receives Uplink Access message, judges that bNeedDeal is false, does not promptly need to handle, and abandons Uplink Access message;
The timer Timer of step 408:BTS is overtime, and the value of bNeedDeal is changed to very, and the even follow-up Uplink of receiving Access message is then handled, and processing procedure is with step 404.
Duration for Timer in the present embodiment is set, and mainly contains the consideration of two aspects:
One, the minimum value of Timer
Can satisfy all of filtering a Uplink Free message replys.Because agreement stipulates that clearly the hearer is after receiving Uplink Free message, the random delay that random wait is 0～20 millisecond sends a Uplink Access message; And then wait for 100 milliseconds of random delay that add 0 to 20 millisecond, send a Uplink Access message once more.Can filter one and be used for corresponding all of descending detection Uplink Free message and reply Uplink Access message in order to guarantee the base station; Consider that BTS receives article one Uplink Access and receive that the maximum delay of the last item Uplink Access is 140 milliseconds, so Timer need be more than or equal to 140 milliseconds;
Two, the maximum of Timer
Can satisfy and not filter replying of next bar Uplink Free message.In order to guarantee descending testing process twice; Promptly issue the independence of the response message of two uplink free; Start a Timer and can not filter out corresponding the replying of next bar Uplink Free message; The Timer value need be less than the double minimum interval that issues the Uplink Free message that is used for descending detection, and this minimum interval is confirmed according to the configuration of system.
The embodiment of the invention can solve the problem of Abis port band width waste when carrying out descending the detection in the group-calling service; After BTS receives that article one responds the uplink aceess of descending detection; Report Listener detection message to BSC; If receive the uplink access message of the descending detection of response in specific afterwards a period of time again then abandon, do not report Listener detection message to BSC.
Many functional parts described in this specification all are called as module, so that stress the independence of its implementation more especially.
In the embodiment of the invention, module can realize with software, so that carried out by various types of processors.For instance, the executable code module of a sign can comprise the one or more physics or the logical block of computer instruction, and for instance, it can be built as object, process or function.However, the executable code of institute's identification module need not to be physically located in together, but can comprise the different instruction on being stored in the coordination not, when combining on these command logics, and its composition module and realize the regulation purpose of this module.
In fact, executable code module can be individual instructions or many instructions, and even can be distributed on a plurality of different code segments, be distributed in the middle of the distinct program, and cross over a plurality of memory devices and distribute.Likewise, operating data can be identified in module, and can realize and be organized in the data structure of any suitable type according to any suitable form.Said operating data can be used as the individual data collection and is collected, and perhaps can be distributed on the diverse location (to be included on the different storage device), and can only be present on system or the network as electronic signal at least in part.
When module can utilize software to realize; Consider the level of existing hardware technology; So can be with the module of software realization; Do not considering under the condition of cost that those skilled in the art can build the corresponding hardware circuit and realize corresponding function, said hardware circuit comprises conventional ultra-large integrated (VLSI) circuit or gate array and the existing semiconductor such as logic chip, transistor or other discrete element.Module can also be used programmable hardware device, such as realizations such as field programmable gate array, programmable logic array, programmable logic devices.
In each method embodiment of the present invention; The sequence number of said each step can not be used to limit the sequencing of each step; For those of ordinary skills, under the prerequisite of not paying creative work, the priority of each step is changed also within protection scope of the present invention.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle according to the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. the descending detection method of a group-calling channel is characterized in that, comprising:
The up link that the base station receiving mobile sends inserts Uplink Access message, and said Uplink Access message is that said travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Whether the said Uplink Access of said base station judges message is effective;
When said Uplink Access message was effective, said base station was sent the hearer to base station controller and is detected Listener Detection message, so that said base station controller keeps said group-calling channel; When said Uplink Access message was invalid, said base station abandoned said Uplink Access message.
2. the descending detection method of group-calling channel according to claim 1 is characterized in that, whether the said Uplink Access of said base station judges message effectively comprises:
Whether the said Uplink Access of said base station judges message is the UplinkAccess message of the corresponding said Uplink Free message that receives first;
If the said Uplink Access of then said base station judges message is effective; Otherwise the said Uplink Access of said base station judges message is invalid.
3. the descending detection method of group-calling channel according to claim 2; It is characterized in that; Said base station comprises the flag of a corresponding said group-calling channel; The initial value of said flag is true, and whether the said Uplink Access of said base station judges message is that the Uplink Access message of the corresponding said Uplink Free message that receives first comprises:
Said base station receives the Uplink Access message of corresponding said Uplink Free message, and said flag is made as vacation, starts timer, and behind said timer expiry, said flag is made as very;
When said flag is a true time, the Uplink Access message that said base station receives is the Uplink Access message of the corresponding said Uplink Free message that receives first.
4. the descending detection method of group-calling channel according to claim 3 is characterized in that, is limited to 140 milliseconds under the timing of said timer, is limited to the minimum interval of the double Uplink of issuing Free message in the timing of said timer.
5. the descending checkout gear of a group-calling channel is characterized in that, comprising:
Receiver module; Be used for the up link access Uplink Access message that receiving mobile sends, said Uplink Access message is that said travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Judge module is used to judge whether said Uplink Access message is effective;
Processing module is used for when said Uplink Access message is effective, sends the hearer to base station controller and detects Listener Detection message, so that said base station controller keeps said group-calling channel; When said Uplink Access message is invalid, abandon said Uplink Access message.
6. the descending checkout gear of group-calling channel according to claim 5 is characterized in that,
Said judge module is used to specifically to judge that whether said Uplink Access message be the Uplink Access message of the corresponding said Uplink Free message that receives first; If judge that then said UplinkAccess message is effective; Otherwise judge that said Uplink Access message is invalid.
7. the descending checkout gear of group-calling channel according to claim 6 is characterized in that, said base station comprises the flag of a corresponding said group-calling channel, and the initial value of said flag is true, and said judge module comprises:
The unit is set, is used for after said receiver module receives the Uplink Access message of corresponding said Uplink Free message, said flag being made as vacation, start timer, and behind said timer expiry, said flag is made as very;
Judging unit, being used in said flag is true time, judges that UplinkAccess message that said receiver module receives is the Uplink Access message of the corresponding said Uplink Free message that receives first.
8. a base station is characterized in that, comprising:
Receiver module; Be used for the up link access Uplink Access message through the receiving port receiving mobile transmission of base station, said Uplink Access message is that said travelling carriage is listening to the message of sending after the uplink idle Uplink Free message that is used for the down link detection of sending on the group-calling channel;
Judge module is used to judge whether said Uplink Access message is effective;
Processing module is used for when said Uplink Access message is effective, sends the hearer through the transmitter end of base station mouth to base station controller and detects Listener Detection message, so that said base station controller keeps said group-calling channel; When said Uplink Access message is invalid, abandons said up link and insert message.
9. base station according to claim 8 is characterized in that,
Said judge module is used to specifically to judge that whether said Uplink Access message be the Uplink Access message of the corresponding said Uplink Free message that receives first; If judge that then said UplinkAccess message is effective; Otherwise judge that said Uplink Access message is invalid.
10. base station according to claim 9 is characterized in that said base station comprises the flag of a corresponding said group-calling channel, and the initial value of said flag is true, and said judge module comprises:
The unit is set, is used for after said receiver module receives the UplinkAccess message of corresponding said Uplink Free message, said flag being made as vacation, start timer, and behind said timer expiry, said flag is made as very;
Judging unit, being used in said flag is true time, judges that Uplink Access message that said receiver module receives is the Uplink Access message of the corresponding said Uplink Free message that receives first.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101371838A CN102802122A (en) | 2011-05-24 | 2011-05-24 | Downlink detection method and device for group call channel, and base station |
| PCT/CN2012/072822 WO2012159487A1 (en) | 2011-05-24 | 2012-03-22 | Downlink detection method, device and base station for group call channel |
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| CN2011101371838A CN102802122A (en) | 2011-05-24 | 2011-05-24 | Downlink detection method and device for group call channel, and base station |
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2011
- 2011-05-24 CN CN2011101371838A patent/CN102802122A/en active Pending
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2012
- 2012-03-22 WO PCT/CN2012/072822 patent/WO2012159487A1/en active Application Filing
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| CN1340984A (en) * | 2000-08-29 | 2002-03-20 | 华为技术有限公司 | Method for processing measured information in global mobile communication system |
| CN1816209A (en) * | 2005-02-06 | 2006-08-09 | 华为技术有限公司 | Method for raising calling-channel utilization ratio of voice broadcasting business |
| EP1755349A1 (en) * | 2005-08-19 | 2007-02-21 | Siemens Aktiengesellschaft | Text or media message service and mobile communication network |
| US20090197537A1 (en) * | 2005-08-23 | 2009-08-06 | Nokia Siemens Networks Gmbh & Co, Kg | Enhancing voice communication between a group of users in a network |
| CN1867172A (en) * | 2005-11-14 | 2006-11-22 | 华为技术有限公司 | Method for economizing group-calling channel resource |
| CN101111009A (en) * | 2006-07-21 | 2008-01-23 | 华为技术有限公司 | Method for timely releasing spare signal channel resource and group calling system thereof |
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