CN101317469B - Method and system for sending short data in cluster group - Google Patents

Abstract

A method and system for sending SMD in trunk group are provided in the invention. And the method includes: SMD being sent to wireless communication network side on the occupied talker private channel when talker sends SMD; the SMD being sent to wireless communication network side on trunk group calling channel of the belonged to cell when listener sends the SMD; the wireless communication system network side broadcasts the SMD after receiving the SMD sent by the talker or the listener. Accordingly, the method and system provided in the implement example could be on 1.5 uplink occupying manner, and allow the SMD to be sent in the trunk group occupied by PTT, and realize the SMD and voice synchronous transmission.

Description

A kind of method and system that in the cluster group, send short data

Technical field

The present invention relates to cluster group group calling technology, particularly a kind of method and system that in the cluster group, send short data in communication system.

Background of invention

Global system for mobile communications (GSM) is the standard of European standard committee member release in 1992, and it adopts data communication technology and unified network standard, and communication quality is guaranteed, and can develop more new business and use for the user.

GSM-R promptly serves the gsm system of railway, and GSM-R can be used as railway control system for the railroader provides a general communications platform, to satisfy the railway network continuous demand of development at present and in the future.It is the system's facility that directly designs, sets up and use for railway transportation production and railway information service, mainly finishes functions such as railway dispatching communication, station yard communication, emergency communication, division communication, official traffic, transit information transmission.

The GT800 digital cluster system adopts and the similar network configuration of GSM based on gsm system, has increased the multiple application processing platform at the industry user.The GT800 system has increased the node that makes things convenient for command scheduling to use on the GSM basic network, as follow-me function number node (FFN), Group Call Register (GCR) etc.Increased queue machine equipment and be convenient to the dispatching desk access network, used to provide more flexibly for command scheduling and support.The business function of all kinds of ripe digital cluster systems of GT800 system reference and GSM network own service characteristic have formed the distinctive Digital Clustering business system of GT800.GT800 can be applicable to the command scheduling business such as group calling, Call Authorised by Dispatcher calling, list query calling, individual call, voice broadcast service.

In GT800 digital cluster system or GSM-R, group calling has two kinds of different up occupancy modes: 1.0 up occupancy modes and 1.5 up occupancy modes.Under 1.0 up occupancy modes, the speaker takies the group call uplink channel of cluster group, and when the speaker was arranged, the group-calling channel of the cluster group of sub-district, speaker place was up busy; Under 1.5 up occupancy modes, the speaker takies speaker's dedicated channel in the cluster group, when the speaker was arranged, the up free time of group-calling channel of all sub-districts of cluster group under the speaker, the hearer can seize up by the up initiation of group-calling channel of all sub-districts of cluster group under the speaker.

But, in the wireless communication system based on the GSM technology, under 1.5 up occupancy modes, do not realize as yet transmitting short data simultaneously, i.e. data and voice simultaneous interpretation in the speech process at present with group calling function.Needing can't realize the business of data and voice simultaneous interpretation thus, wherein, the data here are meant short data, this short data is generally fixing very short information, the information content is pre-defined, generally supports 256 with interior short message, realizes by the coding less than 8 bits (BIT), the short data transfer delay requires short, generally in 500 milliseconds (ms).

Summary of the invention

The embodiment of the invention provides a kind of method and system that send short data in the cluster group, this method can and allow press-and-talk (PTT at 1.5 up occupancy modes, push to talk) sends short data in the cluster group of seizing, realize the simultaneous interpretation of short data and voice.

The embodiment of the invention is achieved in that

A kind of method that in the cluster group, sends short data, this method comprises:

When the speaker sends short data, with short data by the up wireless communication system network side that sends to of shared speaker's dedicated channel; When the hearer sends short data, with short data by the up wireless communication system network side that sends to of the group-calling channel of the cluster group of sub-district, place;

So that after the wireless communication system network side joint receives the short data that speaker or hearer send, the broadcasting short data.

A kind of system that in the cluster group, sends short data, this system comprises terminal and the network equipment in the cluster group, wherein,

Terminal is used for being about on the group-calling channel of the cluster group by shared dedicated channel or sub-district, place short data to send to network equipment, wherein, when described terminal is current when being speaker in the cluster group, sends short data by shared dedicated channel; When described terminal is current when being hearer in the cluster group, the up transmission short data of group-calling channel of the cluster group by the sub-district, place;

Network equipment is used for the short data of receiving terminal transmission and broadcasts described short data.

A kind of method that in the cluster group, sends short data, this method comprises:

The wireless communication system network side joint is received the short data of speaker by the shared up transmission of speaker's dedicated channel; Perhaps receive the short data of hearer by the up transmission of group-calling channel of the cluster group of sub-district, place;

After the wireless communication system network side joint is received the short data of speaker or hearer's transmission, the broadcasting short data.

The embodiment of the invention redefines the speaker of cluster group or the message that the hearer sends short data, when the wireless communication system network side joint is received the message of speaker or hearer's transmission, identify the transmission flow that this message is used for short data, then the short data of speaker or hearer's transmission is broadcasted in the cluster group.Because the voice process of transmitting of the process of transmitting of short data and cluster group or cluster group seizes up two the independently processes that are set in the embodiment of the invention, and when the hearer sends short data, adopt to expand and insert pulse (AB) message, making the wireless communication system network side can identify the message that receives is that the request of short data is up, thereby the short data that broadcast reception is arrived in the cluster group, therefore, the method and system that the embodiment of the invention provides can send short data in 1.5 up occupancy modes and the cluster group that allows PTT to seize, realize the simultaneous interpretation of short data and voice.

Brief Description Of Drawings

Fig. 1 sends the method flow diagram of short data for embodiment of the invention speaker;

Fig. 2 strides the method flow diagram that BSC sends short data for embodiment of the invention speaker;

Fig. 3 sends the method flow diagram of short data to the appointment hearer for embodiment of the invention speaker;

Fig. 4 sends the method flow diagram of short data for embodiment of the invention hearer;

Fig. 5 strides the method flow diagram that BSC sends short data for embodiment of the invention hearer;

Fig. 6 sends the method flow diagram of short data to the appointment recipient for embodiment of the invention hearer;

Fig. 7 retransmits the method flow diagram of short data for the embodiment of the invention.

Implement mode of the present invention

For making the purpose, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.

Do not interrupt the transmission of voice when the method that the embodiment of the invention provides can transmit short data under 1.5 up occupancy modes and in the cluster group that allows PTT to seize, promptly short data and voice are broadcasted simultaneously.In wireless communication system, under 1.5 up occupancy modes and realize the simultaneous interpretation of short data and voice in the cluster group that allows PTT to seize with group calling function.

Under 1.5 up occupancy modes, the speaker is owing to take speaker's dedicated channel in the cluster group, when sending short data, and can be by the up transmission short data of shared speaker's dedicated channel; The hearer is by the up transmission short data of group-calling channel of the cluster group of sub-district, place, promptly by expanding the up transmission short data of group-calling channel that AB message takies the cluster group.When the hearer sends short data, the group-calling channel that need take the cluster group is up, but in order to realize short data and voice simultaneous interpretation, this up taking be distinguished with normal up taking mutually, avoids influencing taking up speaker of speaker's dedicated channel or normal up the taking of other hearers.Therefore, the embodiment of the invention has defined expansion AB message, makes the wireless communication system network side with group calling function learn that current is that the up of short data takies when receiving expansion AB message.

In the invention process, no matter be that the hearer sends short data or the speaker sends the message of carrying short data, the message for carrying short data that receives for the wireless communication system network side is learnt when receiving short data, the embodiment of the invention has defined the message of carrying short data.When the wireless communication system network side joint is received the message of carrying short data, short data is descending by speaker's dedicated channel and descending broadcasting of the group-calling channel cluster group.

Below respectively the speaker being sent short data and hearer sends short data and is elaborated.

The speaker sends short data

The hypothesis set cluster group calling is set up, speaker in the cluster group resides on speaker's dedicated channel, send voice by speaker's dedicated channel is up to the wireless communication system network side, the wireless communication system network side is broadcasted the voice that the speaker sends by the group-calling channel of speaker place cluster group is descending to the hearer.At this moment, the speaker need send short data, this short data is carried in layer three message, by the up wireless communication system network side that sends to of speaker's dedicated channel, the short data that the wireless communication system network side is carried this message is descending and speaker's dedicated channel is descending broadcasts at the group-calling channel of speaker place cluster group.

Fig. 1 sends the method flow diagram of short data for embodiment of the invention speaker, the network entity that this method relates to comprises the base transceiver station (BTS) and the BSC of travelling carriage (MS), wireless communication system network side, wherein, MS is the speaker in the cluster group, BTS is the BTS of sub-district, speaker place, BSC is the BSC of sub-district, speaker place, and its concrete steps are:

Step 100, MS send layer three message frame (I frame) by speaker's dedicated channel is up to BTS, i.e. short data is carried in short data service request (SMD Service Request).

Wherein, speaker's dedicated channel is up can be up for Fast Associated Control Channel (FACCH).

The sign that SMD Service Request can also carry MS is as the international mobile subscriber identity (IMSI) of MS.

Step 101, BTS adopt data indication (DATA IND) message to transmit SMDService Request to BSC.

After step 102, BSC receive SMD Service Request, obtain the short data that it carries, short data is carried in short data service notice (SMD Notification) message descending and speaker's dedicated channel is descending broadcasts by the group-calling channel of MS place cluster group.

Wherein, group-calling channel and the speaker's dedicated channel that is used to broadcast short data can be FACCH.

In the prior art, BSC can administer a plurality of sub-districts, when broadcasting SMD Notification message, will broadcast in the sub-district of all MS place cluster groups that BSC administers.

The sign that SMD Notification message can also be carried MS is as the international mobile subscriber identity (IMSI) of MS.

In embodiments of the present invention, when the cluster group is striden BSC, also can realize striding BSC and send short data, as shown in Figure 2, wherein BSC1 and BTS1 are MS1, i.e. BSC and BTS under the speaker; BSC2 and BTS2 are the hearer of the cluster group under the BSC2 administration for another BSC and the BTS of administration cluster group region, MS2, mobile services switching centre (MSC) administration BSC1 and BSC2, and the concrete steps that the speaker sends short data are:

Step 200, MS1 send SMD ServiceRequest by speaker's dedicated channel is up to BTS1, carry short data.

Wherein, speaker's dedicated channel is up can be up for FACCH.

The sign that SMD Service Request can also carry MS.

Step 201, BTS1 adopt DATA IND message to transmit SMD ServiceRequest to BSC.

Step 202, BSC1 adopt short data service report (SMD REPORT) message to transmit SMD Service Request to MSC1.

Step 203～step 204, MSC1 obtain entrained short data after receiving SMD Service Request, short data is carried in short data service circular (SMD NOTIFY) message sends to BSC1 and MSC2.

In embodiments of the present invention, the difference of SMD NOTIFY and SMD Notification message is that the SMD NOTIFY is a upstream message, and SMD Notification message is downstream message.

Step 205, MSC2 are transmitted to BSC2 with the SMD NOTIFY that receives.

Step 206～step 207, BSC1 will receive is carried at short data among the SMD NOTIFY and adopts SMD Notification message descending and speaker's dedicated channel is descending broadcasts by the group-calling channel of the cluster group of administration; The short data that is carried among the SMD NOTIFY that BSC2 will receive adopts group-calling channel descending broadcast of SMD Notification message by the cluster group of administration.

When realizing that striding BSC sends short data, the BSC of group system network side is provided with the sign of transmitting short data, when BSC receives short data, can determine it is broadcasting short data in the zone of administering at BSC according to this sign, still further send to MSC, by MSC broadcasting short data in the zone of being administered.

Correspondingly, when MSC sends to BSC with short data, also send to and be provided with the BSC that transmits the short data sign.

In embodiments of the present invention, the speaker also can certain hearer in the cluster-specific group receive when sending short data, not only avoid short data in speaker's dedicated channel, the influence that speech quality is produced as FACCH, and the interference of avoiding short data that other hearers by the descending reception voice of the group-calling channel of cluster group are produced.

The described method difference of speaker's method that certain hearer in the cluster-specific group receives when sending short data and Fig. 1 is, the speaker is also carrying appointment hearer sign when the group system network side sends short data, this appointment hearer identifies the hearer that this short data of indication sends to, after the group system network side receives this appointment hearer sign, determine to have the hearer region of this appointment hearer sign, the regional broadcast short data of determining.

Fig. 3 sends the method flow diagram of short data to the appointment hearer for embodiment of the invention speaker, the network entity that this method relates to comprises BTS, BSC and the core net (NSS) of MS, wireless communication system network side, wherein, MS is the speaker in the cluster group, BTS is the BTS of sub-district, speaker place, BSC is the BSC of sub-district, speaker place, NSS is the NSS of administration speaker's cluster group, the entity that has among the NSS comprises a plurality of MSC and VLR Visitor Location Register (VLR), can also carry out forwards between the MSC among the NSS, its concrete steps are:

Step 300, MS send layer three message frame (I frame) by speaker's dedicated channel is up to BTS, and promptly SMD Service Request carries short data and specifies hearer's sign.

Specify hearer's sign can be IMSI that specifies the hearer or the mobile user comprehensive service digital net number (MSISDN) of specifying the hearer.

Step 301, BTS adopt DATA IND message to transmit SMD ServiceRequest to BSC.

Step 302, BSC adopt SMD REPORT message to transmit SMD ServiceRequest to NSS.

After step 303, NSS receive SMD Service Request, obtain entrained short data and specify hearer's sign, determine to have the hearer region of entrained hearer's sign, short data is carried at appointment hearer sign sends to the BSC (this BSC is exactly the BSC at MS place in Fig. 3) that the zone is determined in administration in the SMD NOTIFY.

When NSS receives SMD Service Request, can judge whether to carry and specify hearer's sign, if do not have, then adopt the described method of Fig. 2 short data to be carried in the SMDNotification message and broadcast through BSC; If have, then owing to comprise MSC and VLR among the NSS, carry out alternately according to prior art by MSC and VLR, checking has the hearer who the specifies hearer's sign MS place cluster group of whether having contracted, if, then find hearer region with appointment hearer sign according to prior art, short data is carried at sends to the BSC that the zone is determined in administration in the SMD NOTIFY, otherwise NSS abandons SMD Service Request.

The BSC that step 304, administration institute determine the zone identifies short data and appointment hearer and is carried in the SMD Notification message and broadcasts by the group-calling channel of cluster group is descending (be expressed as by the group-calling channel of MS place cluster group descending and speaker's dedicated channel is descending broadcasts) in Fig. 3 in the institute compass of competency.

If the speaker does not determine that in administration then short data is not broadcasted by speaker's dedicated channel is descending in the zone that BSC administered in zone.

The hearer sends short data

Because under 1.5 up occupancy modes, the cluster group of no matter having set up group calling has or not the speaker, the provisional capital is idle on the group-calling channel of cluster group, the hearer just can expand AB message up the reporting of the group-calling channel of the cluster group of sub-district, place, expand AB message and carry cause value, request takies that the group-calling channel of cluster group of sub-district, hearer place is up to be used to send short data, then the group-calling channel transmission short data of the cluster group by shared sub-district, hearer place.

The form that expands AB message is as shown in table 1:

The value of information

Cause value

8......1?	?
		0110xxxx?	Send short data

Table 1

When expanding AB message when carrying 0110, the expression request takies that the group-calling channel of cluster group of sub-district, hearer place is up to be used to send short data.Certainly, the embodiment of the invention also can be provided with other binary number in expanding AB message, expand that the group-calling channel of cluster group that binary number representation request that AB message carries takies sub-district, hearer place is up to be used to send short data as long as the wireless communication system network lateral root can identify according to the rule that sets in advance.

The embodiment of the invention use to expand AB message, mainly contains following advantage: the first, with short data up take with other such as seize up thoroughly separately, correspondingly, the wireless communication system network side joint is just determined to broadcast short data after receiving and expanding AB message; The second, take for the up of short data, do not need and seize up equally, to the MSC of wireless communication system network side newspaper upstream request (UPLINK REQ) message, do not influence the voice transfer that the speaker carries out in the group calling in the cluster group; The 3rd, take for the up of short data, the BSC of wireless communication system network side can handle respectively at the sub-district under the hearer, and the hearer does not influence other sub-districts initiation short data transmission in the cluster group or takies up in affiliated subdistrict transmission expansion AB message and short data; The 4th, short data up takies not to be needed to need the BSC of wireless communication system network side and MSC to carry out interacting message by the A interface as seizing up, and the A interface does not need to expand short data message.

Fig. 4 sends the method flow diagram of short data for embodiment of the invention hearer, the network entity that this method relates to comprises the BTS and the BSC of MS, wireless communication system network side, wherein, MS is the hearer in the cluster group, BTS is the BTS of sub-district, hearer place, BSC is the BSC of sub-district, hearer place, and its concrete steps are:

(Uplink Free) message of up free time of group-calling channel of step 400, BTS signalling of bouquet group in the administration sub-district.

Under 1.5 up occupancy modes and when allowing PTT to seize, no matter whether the speaker of cluster group talks by speaker's dedicated channel, and it is up that short of MS takies the group-calling channel of cluster group, and BTS just sends Uplink Free message.

Step 401, MS send up taking (Uplink Access) message, request takies the up transmission short data of group-calling channel of the cluster group of sub-district, place, Uplink Access message is one and expands AB message, and the cause value that has wherein carried the present invention's definition shows that the group-calling channel that will take the cluster group is up and is used to send short data.

Step 402, BTS send short data to BSC and detect (Data Detect) message, are used to notify BSC to have MS will take the up transmission short data of group-calling channel of the cluster group of this sub-district, MS place.

The message structure that the speaker that BTS sent to BSC when the message structure of Data Detect message was initiated uplink rob with the prior art hearer detects (Talker Detect) message is identical, but, the process of BSC processing Data Detect message is inequality with the process of handling Talker Detect message: do not need to carry out interacting message with MSC, thereby avoided influencing the voice transfer that the speaker carries out in the cluster group because send short data.

Step 403, BTS send the up response (Uplink Grand) that takies message to MS.

Step 404, MS send Asynchronous Balanced Mode (SABM) message to BTS, and this message is carried SMD Service Request, comprises the IMSI of short data and MS among the SMD Service Request.

SABM message is layer three message.

Step 405, BTS send the response (UA) of SABM message to MS.

Step 406, BTS send link setup indication (EST IND) message to BSC, and this message is carried the SMD Service Request that MS sends.

The execution sequence of step 405 and step 406 can be changed.

Step 407, BSC are in the current place of MS Cell Broadcast CB uplink group cal channel busy (Uplink Busy) message, and the group-calling channel that is used for indication cluster group in sub-district, the current place of MS is up busy.

Up for seizing of prior art, BSC sends Uplink Busy in all sub-districts of the cluster group of being administered, and short data request of the present invention is up, BSC only sends Uplink Busy in sub-district, the current place of MS, so that the short data that cluster group different districts sends is separate, also avoiding sending short data simultaneously, to influence the short data request of other sub-districts up or seize up.

Step 408, BSC send up release (UplinkRelease) message by group-calling channel is up to MS, and the group-calling channel that release MS takies is up.

Step 409, BSC send the request of discharging (REL REQ) to BTS, and the group-calling channel that indication BTS release MS takies is up.

Step 410, BTS discharge group-calling channel that MS takies up after, send to discharge to BSC and confirm (REL CNF), it is up to have confirmed to have discharged the group-calling channel that MS takies.

Step 411, BSC be in the current place of MS Cell Broadcast CB uplink group cal channel idle (UplinkFree) message, and it is up or seize up that other MS of sub-district, the current place of instruct MS and MS can initiate the short data request.

Step 412, BSC broadcast SMDNotification message in all sub-districts of the cluster group of being administered, this SMD Notification message is carried short data.

In fact BSC broadcasts in all sub-districts of the cluster group of being administered is exactly in the descending of all group-calling channels of cluster group and the descending transmission of speaker's dedicated channel.

If there is not speaker's dedicated channel in the cluster group, then a descending transmission at all group-calling channels of cluster group.

This SMD Notification message can also be carried the IMSI of MS.

In the prior art, BSC can administer a plurality of sub-districts, when broadcasting SMD Notification message, will broadcast in the sub-district of all MS place cluster groups that BSC administers.

In the present invention, when the cluster group is striden BSC, also can realize striding BSC and send short data, as shown in Figure 5, wherein BSC1 and BTS1 are MS1, i.e. BSC and BTS under the hearer; BSC2 and BTS2 are another BSC and the BTS of administration cluster group region, and MS2 is another hearer or the speaker of the cluster group under the BSC2 administration, and MSC1 administers BSC1, and MSC2 administers BSC2, and its concrete steps are:

The Uplink Free message of step 500, BTS1 signalling of bouquet group in the administration sub-district.

Step 501, MS1 send Uplink Access message, request takies the up transmission short data of group-calling channel of the cluster group of sub-district, place, UplinkAccess message is one and expands AB message, and the cause value that has wherein carried embodiment of the invention definition shows that the group-calling channel that will take the cluster group is up and is used to send short data.

Step 502, BTS1 send Data Detect message to BSC1, are used to notify BSC1 to have MS1 will take the up transmission short data of group-calling channel of the cluster group of this sub-district, MS1 place.

BTS was identical to the message structure of the Talker Detect message of BSC transmission when the message structure of Data Detect message was initiated uplink rob with the prior art hearer, but, the process of BSC1 processing DataDetect message is inequality with the process of handling Talker Detect message: do not need to carry out interacting message with MSC1, thereby avoided influencing the voice transfer that the speaker carries out in the cluster group because send short data.

Step 503, BTS1 send Uplink Grand to MS1.

Step 504, MS1 send SABM message to BTS1, and this message is carried SMD ServiceRequest, comprises the IMSI of short data and MS1 among the SMD Service Request.

SABM message is layer three message.

Step 505, BTS1 send the UA of SABM message to MS1.

Step 506, BTS1 send EST IND message to BSC1, and this message is carried the SMD Service Request that MS1 sends.

Step 507, BSC1 adopt SMD REPORT message to transmit SMD ServiceRequest to MSC1.

Step 508, BSC1 are in the current place of MS1 Cell Broadcast CB Uplink Busy message, and the group-calling channel that is used for indication cluster group in sub-district, the current place of MS1 is up busy.

Step 509, BSC1 send Uplink Release message by group-calling channel is up to MS1, and the group-calling channel that release MS1 takies is up.

Step 510, BSC1 send REL REQ to BTS1, and the group-calling channel that indication BTS1 release MS1 takies is up.

Step 511, BTS1 discharge group-calling channel that MS1 takies up after, send REL CNF to BSC1, it is up to have confirmed to have discharged the group-calling channel that MS1 takies.

Step 512, BSC1 be in the current place of MS1 Cell Broadcast CB Uplink Free message, and it is up or seize up that other MS of sub-district, instruct MS 1 current place and MS1 can initiate the short data request.

Step 513～514, MSC1 obtain entrained short data after receiving SMD Service Request, short data is carried at sends to BSC1 and MSC2 in the SMD NOTIFY.

Step 515, MSC2 transmit this SMD NOTIFY and give BSC2.

Step 516～step 517, BSC1 will receive is carried at short data in the SMD NOTIFY and adopts SMD Notification message descending and speaker's dedicated channel is descending broadcasts by the group-calling channel of the cluster group of administration; The short data that is carried in the SMDNOTIFY message that BSC2 will receive adopts group-calling channel descending broadcast of SMD Notification message by the cluster group of administration.

When realizing that striding BSC sends short data, the BSC of group system network side is provided with the sign that whether short data is further sent to MSC, when BSC receives short data, understand broadcasting short data in the zone that determines whether to administer according to this sign at BSC, still further send to MSC, by MSC broadcasting short data in the zone of being administered.

In embodiments of the present invention, the hearer also can other hearers or the speaker in the cluster-specific group receive when the transmission short data, not only avoid short data in speaker's dedicated channel, the influence of speech quality pass being given birth to as FACCH, and the interference of avoiding short data that other hearers by the descending reception voice of the group-calling channel of cluster group are produced.

The described method difference of hearer's method that certain hearer in the cluster-specific group receives when sending short data and Fig. 4 is, the hearer is also carrying appointment recipient sign when the group system network side sends short data, this appointment recipient identifies hearer or the speaker that this short data of indication sends to, after the group system network side receives this appointment recipient sign, determine to have the hearer or the speaker region of this appointment recipient sign, the regional broadcast short data of determining.

Fig. 6 sends the method flow diagram of short data to the appointment recipient for embodiment of the invention hearer, the network entity that this method relates to comprises BTS, BSC and the NSS of MS, wireless communication system network side, wherein, MS is the hearer in the cluster group, and BTS is the BTS of sub-district, hearer place, and BSC is the BSC of sub-district, hearer place, NSS is the NSS at administration hearer's cluster group place, the entity that has among the NSS comprises MSC and VLR, can also carry out forwards between the MSC among the NSS, and its concrete steps are:

The Uplink Free message of step 600, BTS signalling of bouquet group in the administration sub-district.

Step 601, MS send Uplink Access message, and request takies the up transmission short data of group-calling channel of the cluster group of sub-district, place.

Step 602, BTS send Data Detect message to BSC.

Step 603, BTS send Uplink Grand to MS.

Step 604, MS send SABM message to BTS, and this message is carried SMD ServiceRequest, comprises short data and recipient's sign among the SMD Service Request.

Step 605, BTS send UA to MS.

Step 606, BTS send EST IND message to BSC, and this message is carried the SMD Service Request that MS sends.

The execution sequence of step 605 and step 606 can be changed.

Step 607, BSC send SMD REPORT message to NSS, and this message is carried the SMD Service Request that MS sends.

When NSS receives SMD Service Request, can judge whether to carry and specify hearer's sign, if do not have, then adopt the described method of Fig. 5 short data to be carried in the SMDNotification message and broadcast through BSC; If have, then owing to comprise MSC and VLR among the NSS, carry out alternately according to prior art by MSC and VLR, checking has the hearer of the sign of specify receiving or the speaker MS place cluster group of whether having contracted, if, then find hearer region, otherwise NSS abandons SMD Service Request with appointment hearer sign according to prior art.

Step 608, BSC are in the current place of MS Cell Broadcast CB Uplink Busy message.

Step 609, BSC send Uplink Release message by group-calling channel is up to MS.

Step 610, BSC send REL REQ to BTS.

Step 611, BTS send RELCNF to BSC after the group-calling channel that release MS takies is up.

Step 612, BSC are in the current place of MS Cell Broadcast CB Uplink Free message.

Step 613, NSS are with short data and specify hearer's sign to be carried to send to administration in the SMD NOTIFY and determine regional BSC (this BSC is exactly the BSC at MS place in Fig. 6).

The BSC that step 614, administration institute determine the zone identifies short data and appointment hearer and is carried in the SMD Notification message and broadcasts by the group-calling channel of cluster group is descending (be expressed as by the group-calling channel of MS place cluster group descending and speaker's dedicated channel is descending broadcasts) in Fig. 6 in the institute compass of competency.

If the speaker does not determine that in administration then short data is not broadcasted by speaker's dedicated channel is descending in the zone that BSC administered in zone.

In embodiments of the present invention, because the MSC among the NSS can only upgrade the zone of determining to have the current place of hearer of specifying hearer's sign by the prior art position, and can accurately not determine to have the sub-district at the current place of hearer of specifying hearer's sign, so NSS can only be carried at short data and send to administration in the SMD NOTIFY and determine regional BSC.

In embodiments of the present invention, when the hearer of cluster group or speaker receive SMD Notification message, judge earlier whether SMD Notification message carries to specify the recipient to identify, if not, entrained short data received; If it is consistent to judge then whether entrained appointment recipient sign is provided with self, if receive entrained short data; If not, then abandon SMD Notification message.

The embodiment of the invention also provides BSC heavily to broadcast the function of SMD Notification message in order to improve the reliability that sends short data.The embodiment of the invention is provided with at BSC and heavily broadcasts SMDNotification message number of times and interval, and the scope of heavy number of broadcast times can be set to 0～5,0 expression not to be needed heavily to broadcast.The scope of retransmission interval can be set to 1～10, and unit is hundred ms.BSC can also give tacit consent to heavily broadcasting, when acquiescence is heavily broadcasted, is spaced apart 500ms, heavily broadcasts SMDNotification message twice.

Fig. 7 is the method flow diagram of embodiment of the invention repeating transmission short data, and the network entity that this method relates to comprises the BSC and the BTS of wireless communication system network side, and the hearer of cluster group or speaker, and its concrete steps are:

The short data of certain the cluster group that sends by hearer or speaker that step 700, BSC receive that BTS transmits, adopt Fig. 1 or the described step of Fig. 2 in the cluster group, to broadcast this short data after, for this cluster group buffer memory short data and to write down the heavy number of broadcast times of reality be 0.

Step 701, BSC start timer according to the heavy broadcast interval time of configuration, work as timer expiry, after the SMD Notification message of short data of institute's buffer memory is carried in broadcasting again, upgrade the actual number of broadcast times that weighs.

This timer is a cluster group group calling level, at each cluster group a timer is set in BSC.

Step 702, BSC judge whether actual heavy number of broadcast times has reached the heavy number of broadcast times of setting, if change step 703 over to; Otherwise, change step 704 over to.

Step 703, BSC discharge the short data of institute's buffer memory, finish.

Step 704, change step 701 over to and continue to carry out.

When having new short data to send to BSC in this cluster group, after BSC stopped the timing of timer and discharges the short data of institute's buffer memory, the new short data that buffer memory receives was also carried out according to the described step of Fig. 7.

The method that provides by the embodiment of the invention, can be in wireless communication system with group calling function, as in wireless communication system with group calling function based on the GSM technology, realize under the 1.5 up occupancy modes and allow the short data that the group-calling channel of the cluster group that PTT seizes is descending and the simultaneous interpretation of voice, realize 1.5 up occupancy modes under and allow the speaker in the cluster group that PTT seizes in the speech process, to transmit the short data of the hearer's transmission in speaker or the cluster group simultaneously.

The embodiment of the invention also provides a kind of system that sends short data in the cluster group, this system comprises terminal and the network equipment in the cluster group, wherein, terminal is used for being about on the group-calling channel of the cluster group by shared dedicated channel or sub-district, place short data to send to network equipment; Network equipment is used for the short data of receiving terminal transmission and broadcasts described short data.

In embodiments of the present invention, when terminal is current when being speaker in the cluster group, describedly send short data by shared dedicated channel; When terminal is current when being hearer in the cluster group, the up transmission short data of group-calling channel of described cluster group by the sub-district, place.

Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.

Claims (22)

1. method that sends short data in the cluster group is characterized in that this method comprises:

When the speaker sends short data, with short data by the up wireless communication system network side that sends to of shared speaker's dedicated channel; When the hearer sends short data, with short data by the up wireless communication system network side that sends to of the group-calling channel of the cluster group of sub-district, place; So that after the wireless communication system network side joint receives the short data that speaker or hearer send, the broadcasting short data.

2. the method for claim 1 is characterized in that, described speaker to the process that the wireless communication system network side sends short data is:

The speaker sends short data service request SMD Service Request by the up base transceiver station BTS to the wireless communication system network side of speaker's dedicated channel, carries short data;

BTS adopts data indication DATA IND message to transmit the SMD Service Request that carries short data to the base station controller BSC of wireless communication system network side.

3. method as claimed in claim 2 is characterized in that, described SMD Service Request also carries speaker's sign.

4. method as claimed in claim 2 is characterized in that, the sign of transmitting short data is set in BSC, and described speaker also comprises to the process that the wireless communication system network side sends short data:

BSC determines short data is sent to the moving exchanging center MSC of wireless communication system network side to adopt short data service report SMD REPORT message to transmit the SMD Service Request that carries short data to MSC according to the sign that is provided with.

5. method as claimed in claim 4 is characterized in that, described SMD Service Request also carries and specifies hearer's sign.

6. method as claimed in claim 4 is characterized in that, the sign of transmitting short data is set in BSC, and the process of described broadcasting short data is:

After MSC receives the short data of speaker's transmission, short data is carried at short data service circular SMD NOTIFY sends to one or more BSC that forwarding short data sign is set, this BSC determines short data is broadcasted according to the sign that is provided with, and is carried in the short data service notification message SMD Notification message short data descending or/and speaker's dedicated channel downlink broadcast by the group-calling channel of cluster group.

7. method as claimed in claim 6 is characterized in that, described SMD Notification message carries specifies hearer's sign.

8. method as claimed in claim 6 is characterized in that, before BSC broadcasting short data, this method also comprises:

The core net NSS of administration MSC judges that receive appointment hearer that SMD Service Request carries identifies the corresponding hearer cluster group of whether having contracted, if short data is carried at sends to the BSC that administration has the hearer who specifies hearer's sign in the SMD NOTIFY; Otherwise, abandon the SMD Service Request that receives.

9. the method for claim 1 is characterized in that, described hearer to the process that the wireless communication system network side sends short data is:

Up when idle when the group-calling channel of cluster group, the hearer sends the Asynchronous Balanced Mode SABM message of carrying SMD Service Request to the BTS of wireless communication system network side, comprises the short data that the hearer will send among the SMDService Request.

10. method as claimed in claim 9 is characterized in that, before the hearer sent SABM message, this method comprised:

After receiving the up idle Uplink Free message of group-calling channel of BTS broadcasting, the hearer sends the up Uplink Access message that takies to BTS;

BTS sends short data to the BSC of wireless communication system network side and detects Data Detect message, sends the up response Uplink Grand that takies message to the hearer;

After the hearer sent SABM message, this method also comprised:

BTS sends the response UA of SABM message to the hearer, sends link setup indication ESTIND message to BSC, and this message is carried the SMD Service Request that the hearer sends.

11. method as claimed in claim 10 is characterized in that, described Uplink Access message inserts pulse AB message for expanding, and wherein carries cause value and shows the up transmission short data of the group-calling channel that will take the cluster group.

12. method as claimed in claim 10 is characterized in that, described SMD Service Request also comprises hearer's sign.

13. method as claimed in claim 10 is characterized in that, the sign of transmitting short data is set in BSC, this method also comprises:

BSC determines short data is sent to MSC according to the sign that is provided with, and adopts SMD REPORT message to transmit the SMD Service Request that carries short data to the MSC of wireless communication system network side.

14. method as claimed in claim 10 is characterized in that, described SMD Service Request also comprises appointment recipient sign.

15. method as claimed in claim 9 is characterized in that, the process of described broadcasting short data is:

The group-calling channel that the BSC release hearer of wireless communication system takies is up, after the group-calling channel that the BTS release hearer of indication wireless communication system takies is up, in the descending or/and speaker's dedicated channel downlink broadcast SMD Notification message of cluster group of group-calling channel, this SMDNotification message is carried short data.

16. method as claimed in claim 15 is characterized in that, the up process of group-calling channel that described BSC release hearer takies is:

BSC sends uplink group cal channel busy Uplink Busy message in sub-district, the current place of hearer, send up release Uplink Release message by group-calling channel is up to the hearer, and the group-calling channel that the release hearer takies is up;

The up process of group-calling channel that described indication BTS release hearer takies is:

BSC sends to BTS and discharges request REL REQ, and the group-calling channel that indication BTS release hearer takies is up;

BTS sends release to BSC and confirms RELCNF after the group-calling channel that the release hearer takies is up;

Before described broadcasting SMD Notification, this method also comprises:

BSC sends uplink group cal channel idle Uplink Free message in sub-district, the current place of hearer.

17. method as claimed in claim 15 is characterized in that, described SMDNotification carries and specifies recipient's sign.

18. method as claimed in claim 15 is characterized in that, before BSC broadcasting short data, this method also comprises:

The NSS of the MSC of administration wireless communication system network side judges to have the hearer that receives recipient's sign that SMDService Request carries or the speaker cluster group of whether having contracted, if short data is carried at the SMD NOTIFY sends to administration and have the hearer that specifies recipient's sign or speaker's BSC; Otherwise, abandon the SMD Service Request that receives.

19., it is characterized in that this method further comprises as claim 7 or 17 described methods:

After the hearer of cluster group or speaker receive SMD Notification message, judge whether to carry and specify hearer or recipient to identify, if not, entrained short data then received; If, the sign of then judging self whether with entrained appointment hearer sign or recipient identify consistent, if then receive entrained short data; Otherwise, then abandon the SMDNotification message that receives.

20. the method for claim 1 is characterized in that, in the wireless communication system network side heavy number of broadcast times of short data and heavy broadcast interval is set, this method further comprises the step of heavily broadcasting short data:

The short data that A, wireless communication system network side buffer memory receive;

After the timer that B, startup are provided with at the cluster group was waited for the heavy broadcast interval that is provided with, short data descending by speaker's dedicated channel of cluster group and group-calling channel downlink broadcast buffer memory also upgraded actual heavy number of broadcast times;

Whether C, wireless communication system network side judge actual heavy number of broadcast times greater than the heavy number of broadcast times that is provided with, if then discharge the short data of institute's buffer memory, process ends; Otherwise, then change step B over to and continue to carry out.

21. a system that sends short data in the cluster group is characterized in that this system comprises terminal and the network equipment in the cluster group, wherein,

Terminal is used for being about on the group-calling channel of the cluster group by shared dedicated channel or sub-district, place short data to send to network equipment, wherein, when described terminal is current when being speaker in the cluster group, sends short data by shared dedicated channel; When described terminal is current when being hearer in the cluster group, the up transmission short data of group-calling channel of the cluster group by the sub-district, place;

Network equipment is used for the short data of receiving terminal transmission and broadcasts described short data.

22. a method that sends short data in the cluster group is characterized in that this method comprises:

The wireless communication system network side joint is received the short data of speaker by the shared up transmission of speaker's dedicated channel; Perhaps receive the short data of hearer by the up transmission of group-calling channel of the cluster group of sub-district, place;

After the wireless communication system network side joint is received the short data of speaker or hearer's transmission, the broadcasting short data.

Images