CN105554903A - Method for lagged entrance to grouping calling by UE in IDLE state - Google Patents
Method for lagged entrance to grouping calling by UE in IDLE state Download PDFInfo
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- CN105554903A CN105554903A CN201410612359.4A CN201410612359A CN105554903A CN 105554903 A CN105554903 A CN 105554903A CN 201410612359 A CN201410612359 A CN 201410612359A CN 105554903 A CN105554903 A CN 105554903A
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Abstract
The invention relates to a method for lagged entrance to grouping calling by UE in an IDLE state. The method comprises: at an eNB side, one or more preambles are reserved, one-to-one mapping binding is carried out on all reserved preambles and unique identifiers of all group calling units that are being carried out, and the mapping relation is broadcast; and the reserved preambles are received and detected, and paging messages and group calling configuration information of the corresponding group calling are issued based on the mapping relation. With the method, occurrence of interruption and delay of group calling services of the IDLE user during the cell reselection process can be reduced.
Description
Technical field
The present invention relates to LTE group system, particularly relate to a kind of IDLE state UE and lag and enter the method for group calling.
Background technology
Trunked communication system, has become a vital personal communication system except public mobile communication system at present.The command scheduling had due to it and emergent feature (as one-touch intercommunication, urgent call and many group schedulings etc.), be therefore widely used in multiple important industries such as comprising army, airport, public security, railway and electric power.
Although trunked communication system is in a very consequence, compared with public mobile communication, no matter trunked communication system is in each of each side such as scale, standard, opening, compatibility, all there are problems.
Along with the development of public network wireless communication technology, people are to two-forty, and low delay, low cost proposes more and more higher requirement.LTE (LongTermEvolution) project just creates in this context.This standard have employed OFDM (OrthogonalFrequencyDivisionMultiplexing), the system architecture of the Radio Transmission Technology that MIMO (MultipleInputMultipleOutput) etc. are advanced, flat network topology structure and all-IP; Support bandwidth varying, maximum 20M bandwidth; Higher peak rate and shorter propagation delay time.
Equally, along with the development of Clustering, trunked communication system also develops from simulation cluster to Digital Clustering, and arrowband cluster develops to broadband cluster.Broadband radio multi-media cluster refers to based on broadband wireless communication technique, adopts multimedia service form, based on the private wireless communication system of command scheduling function, is called for short broadband cluster.
Along with standardization and the commercialization of LTE, LTE more and more becomes broadband connections focus.Utilizing LTE system to do private network broadband cluster is also inevitable development trend.
Have a kind of type of service to be group calling in cluster, that is: one group of user is defined as a call group, group member is communicated by half-duplex mode, is spoken by application right of speech, the communication mode that other group members listen to.Wherein non-right of speech user can listen to speech from right of speech user or video in idle condition.
In a community, this group membership shares a down channel, and network side is set up by beep-page message notice group call, sets up message set up group calling Radio Resource by group calling.And enter user can add in group calling smoothly to meet to lag, it be send according to some cycles that message is set up in the beep-page message of group calling and group calling.
Group calling Entry function can make those before call group calling does not terminate, and the group membership failing to add in time call adds ongoing talkgroup call as early as possible in the time after a while.
Up channel needs to press ' PTT ' key and seizes use.
In LTE broadband cluster communication system, cluster user in moving process, particularly across the continuity problem that there is cluster multi call business during community.How can fast switch over business, reduce handover delay and be one and affect trunked communication system performance, the problem of Consumer's Experience.
Existing LTE broadband cluster standard (B-TRunc) as long as middle regulation UE carries out cell reselection, will initiate TAU process, notice cluster core net processes, and makes network side send group calling in advance or as early as possible and sets up related signaling.Refer to accompanying drawing 1:
Step 1:IDLE terminal meets cell re-selection conditions, performs cell reselection.
Step 2-4:IDLE terminal is set up RRC and is connected, and carry NAS message TAURequest completing in message, carry group number, wherein activeflag=false does not need to set up user's context;
Step 5: base station forwards NAS message to core net by INITIALUEMESSAGE message, carries current TAI in message;
Step 6: if eNB does not have corresponding group service, eCN is disappeared by PTTInitialcontextsetuprequest and notifies that eNB sets up group service, if existing corresponding group service eCN notifies that eNB sends group calling in Target cell in advance according to primitive period and sets up related signaling, i.e. Trunkingpaging message and Groupcallconfig message in eNB.
Step 7: base station sends Trunkingpaging message
Step 8: base station sends Groupcallconfig message
Step 9: core net carries NASTAUaccept by direct-sending message, to terminal check.
Due to cell reselection, UE is needed to enter connection status from IDLE state, and need to send TAU update notification cluster core net, reinform target BS by cluster core net to carry out group calling and set up signaling and send in advance, which increase the time delay that UE sets up in Target cell group calling, first being the time delay of an IDLE state to connected state, is exactly that UETAU upgrades time delay at one.
Summary of the invention
In order to overcome the problems referred to above, the present invention proposes a kind of IDLE state UE and lags and enter the method for group calling, comprise: eNB side: reserved one or more Preamble, the unique identification of described reserved each preamble and ongoing each group calling is carried out man-to-man map bindings, and broadcasts described mapping relations; Receive and described reserved Preamble detected, issuing beep-page message and the group calling configuration information of corresponding group calling according to described mapping relations.
Preferably, described mapping relations are broadcasted by SIB1, cluster SIB or self-defining SIB.
Preferably, described map bindings is carried out between reserved Preamble and the higher group calling of priority.
Preferably, described eNB receives and unreserved Preamble detected, issues RAR message.
Preferably, described eNB obtains UE place group calling ID from RRC connection establishment request message or RRC connection setup complete message, if the group calling that described group calling ID is corresponding exists, then feed back RRC connection refused message or RRC connection release message, and issue beep-page message and the group calling configuration information of described group calling.
Based on identical design, the present invention also proposes a kind of IDLE state UE and lags and enter the method for group calling, comprising: UE side: obtain the reserved Preamble of Target cell and the mapping relations of group calling; According to described mapping relations, know that place group calling is carried out in Target cell, initiate Stochastic accessing by the preamble corresponding with place group calling; Monitor the PDCCH of TP-RNTI scrambling, and obtain corresponding PDSCH data.
Preferably, also comprise: if described UE listens to TP-RNTI, then stop sending preamble; Otherwise, strengthen transmitting power and send this preamble.
Preferably, described mapping relations are in SIB1, and described device obtains described mapping relations after cell reselection; Or described mapping relations are in cluster SIB or self-defining SIB, and described device obtains described mapping relations before cell reselection or after gravity treatment.
Preferably, also comprise: described UE does not find place group calling in described mapping relations, initiate Stochastic accessing by unreserved preamble, and initiate TAU process.
Preferably, also comprise: described UE, by after unreserved preamble Stochastic accessing, carries UE place group calling ID in the request of RRC connection establishment or RRC connection setup complete message.
The technical scheme of proposition of the present invention as far as possible by eNB directly feed back there is group calling configuration information to UE, thus reduce IDLE user's group-calling service in cell reselection process and interrupt time delay.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is existing LTE cluster standard small area gravity treatment TAU process chart;
Fig. 2 is the process chart of the embodiment of the present invention 1;
Fig. 3 is the process chart of the embodiment of the present invention 2;
Fig. 4 is the process chart of the embodiment of the present invention 3;
Fig. 5 is the process chart of the embodiment of the present invention 4.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments; It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The IDLE state UE method entering group calling that lags that the present invention proposes mainly comprises: eNB side:
Reserved one or more Preamble, carries out man-to-man map bindings by the unique identification of described reserved each preamble and ongoing each group calling, and broadcasts described mapping relations; Receive and described reserved Preamble detected, issuing beep-page message and the group calling configuration information of corresponding group calling according to described mapping relations.
Wherein, described mapping relations can be passed through SIB1, cluster SIB and broadcast, and also can be broadcasted by self-defining new SIB.Described map bindings is carried out between reserved Preamble and the higher group calling of priority.
Further, when eNB receives and unreserved Preamble detected, then RAR message is issued.
Further, eNB also obtains UE place group calling id information from the RRC connection establishment request message of UE or RRC connection setup complete message, if the group calling that group calling ID is corresponding exists, then feed back RRC connection refused message or RRC connection release message, and issue beep-page message and the group calling configuration information of described group calling.
Based on identical design, the present invention also proposes a kind of IDLE state UE and lags and enter the method for group calling, comprising: UE side: obtain the reserved Preamble of Target cell and the mapping relations of group calling; According to described mapping relations, know that place group calling is carried out in Target cell, initiate Stochastic accessing by the preamble corresponding with place group calling; Monitor the PDCCH of TP-RNTI scrambling, and obtain corresponding PDSCH data.
Further, if described UE listens to TP-RNTI, then stop sending preamble; Otherwise, strengthen transmitting power and send this preamble.
Wherein, described mapping relations can in SIB1, and described UE obtains described mapping relations after cell reselection; Or described mapping relations are in cluster SIB or self-defining SIB, and described UE can obtain described mapping relations before cell reselection or after gravity treatment.
Further, said method can also comprise: if UE does not find place group calling in described mapping relations, then initiate Stochastic accessing by unreserved preamble, and initiate TAU process.
Further, also comprise: described UE, by after unreserved preamble Stochastic accessing, can also carry UE place group calling ID in the request of RRC connection establishment or RRC connection setup complete message.
In the above-mentioned methods, eNB reserves Preamble and ongoing group calling ID carries out map bindings in community, these mapping relations is broadcasted in system broadcasts simultaneously; The mapping relations of this preamble that UE broadcasts according to Target cell and group calling ID, know whether the current ongoing group-calling service of UE is carrying out in Target cell in advance; To ongoing group calling, UE, by the mapping relations of preamble and group calling ID, initiates competition Stochastic accessing, notifies that eNB carries out lagging of group-calling service and enters process by the Preamble sent; Accordingly, eNB, by detecting the reception of reserved Preamble, decides lagging of group-calling service and enters process.In addition, to the group calling that cannot be judged by mapping relations, UE can also carry group calling ID and directly notify that eNB carries out lagging entering process in follow-up RRC information, and requires no core net transfer.This method directly judges the situation of entering that lags by eNB, then carries out lagging fast entering flow processing, thus reduces group calling interruption time delay.
Be described in detail below by instantiation.
Embodiment 1: system is reserved preamble and mapped with group calling; UE judges that Target cell exists place group calling, and concrete process please refer to accompanying drawing 2.
Step 1: first reserved n Preamble in special Preamble, example=5, for cluster user cell reselection is special.Can not embody this reserved Preamble quantity in system broadcasts, reserved Preamble can be the one of special Preamble.Reserved Preamble can not be distributed to object UE by base station in non-competing random access procedure.
This reserved Preamble is distributed to the ongoing group calling in this community by eNB, reserved PreambleIDindex and group calling ID is mapped preservation one to one, inside system broadcasts, broadcast this reserved Preamble and group calling ID mapping relations simultaneously, here system broadcasts can be SIB1, also can be cluster SIB, or newly define SIB.
Step 2a: this reserved Preamble and group calling ID mapping relations broadcast in SIB1, UE just can obtain these mapping relations in Target cell; UE judges that the group calling at oneself place is set up in Target cell.
Step 2b: this reserved Preamble and group calling ID mapping relations broadcast at cluster SIB or newly define in SIB, can require that cluster UE reads target cell system broadcast before cell reselection, or after cell reselection, reading target cell system is broadcasted, and obtains this reserved Preamble and group calling ID mapping relations.Suppose that UE judges that the group calling at oneself place is set up in Target cell.
Step 3 ~ 4:UE Preamble that the group calling ID of oneself maps does competition Stochastic accessing.
After step 5:UE sends preamble, monitor the PDCCH of TP-RNTI scrambling.If listen to TP-RNTI, then stop sending preamble; If all do not listened to, then continue to strengthen transmitting power and send this preamble;
Step 6: for eNB, if this reserved preamble detected, according to the GID of correspondence, carries out entering process for lagging of this GID, namely in nearest paging resource, sends group calling paging and configuration information.For this reserved preamble, RAR can not be replied in base station; Accordingly, the UE sending this reserved Preamble also can not wait for the reception of RAR.
Embodiment 2: system is reserved preamble and mapped with group calling; UE judges that Target cell does not exist the group calling at its place, and concrete process please refer to accompanying drawing 3.
Step 1 ~ 2: similar to embodiment 1, difference is that UE judges that Target cell does not exist the group calling at its place.
Step 3 ~ 12:UE selects unreserved preamble to be at war with Stochastic accessing, and initiates TAU process.
Lag enter the time delay of group calling to reduce idle state UE further, for step 3 in embodiment 2 and process afterwards, can following optimization process be carried out, please refer to example 3 and embodiment 4.
Embodiment 3: please refer to accompanying drawing 4, carries group calling ID in RRC connection establishment request message.
After step 1 ~ 4:UE cell reselection, be at war with in Target cell Stochastic accessing, initiates TAU process, carry in RRC connection establishment request message simultaneously UE in former community ongoing group calling ID.
Step 5:eNB judges after receiving this group calling ID: if this group calling is set up in the community of eNB, then proceed to step 6a, 7 and 8, carries out lagging of group calling and enters process, namely in nearest paging resource, sends group calling paging and configuration information.Send RRCreject message to UE simultaneously.
If the community of eNB does not exist this group calling, then proceed to step 6b, 7 and 8, adopt TAU process enlarging group calling.
Embodiment 4: please refer to accompanying drawing 5, carries group calling ID in RRC connection setup complete message.
After step 1 ~ 6:UE cell reselection, be at war with in Target cell Stochastic accessing, initiates TAU process, carry in RRC connection setup complete message simultaneously UE in former community ongoing group calling ID.
Step 7:eNB judges after receiving this group calling ID: if this group calling is set up in the community of eNB, then proceed to step 8a, 9 and 10, carries out lagging of group calling and enters process, namely in nearest paging resource, sends group calling paging and configuration information.Send RRCrelease message release UE to UE simultaneously.
If the community of eNB does not exist this group calling, then proceed to step 8b, 9 and 10, adopt TAU process enlarging group calling.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. IDLE state UE lags and enters a method for group calling, it is characterized in that, comprising:
ENB side:
Reserved one or more Preamble, carries out man-to-man map bindings by the unique identification of described reserved each preamble and ongoing each group calling, and broadcasts described mapping relations;
Receive and described reserved Preamble detected, issuing beep-page message and the group calling configuration information of corresponding group calling according to described mapping relations.
2. method according to claim 1, is characterized in that, described mapping relations are broadcasted by SIB1, cluster SIB or self-defining SIB.
3. method according to claim 1, is characterized in that, described map bindings is carried out between reserved Preamble and the higher group calling of priority.
4. method according to claim 1, is characterized in that, also comprises:
Described eNB receives and unreserved Preamble detected, issues RAR message.
5. method according to claim 1, it is characterized in that, also comprise: described eNB obtains UE place group calling ID from RRC connection establishment request message or RRC connection setup complete message, if the group calling that described group calling ID is corresponding exists, then feed back RRC connection refused message or RRC connection release message, and issue beep-page message and the group calling configuration information of described group calling.
6. IDLE state UE lags and enters a method for group calling, it is characterized in that, comprising:
UE side:
Obtain the reserved Preamble of Target cell and the mapping relations of group calling;
According to described mapping relations, know that place group calling is carried out in Target cell, initiate Stochastic accessing by the preamble corresponding with place group calling;
Monitor the PDCCH of TP-RNTI scrambling, and obtain corresponding PDSCH data.
7. method according to claim 6, is characterized in that, also comprises: if described UE listens to TP-RNTI, then stop sending preamble; Otherwise, strengthen transmitting power and send this preamble.
8. method according to claim 6, is characterized in that,
Described mapping relations are in SIB1, and described device obtains described mapping relations after cell reselection; Or,
Described mapping relations are in cluster SIB or self-defining SIB, and described device obtains described mapping relations before cell reselection or after gravity treatment.
9. method according to claim 6, is characterized in that, also comprises: described UE does not find place group calling in described mapping relations, initiates Stochastic accessing, and initiate TAU process by unreserved preamble.
10. method according to claim 9, is characterized in that, also comprises: described UE, by after unreserved preamble Stochastic accessing, carries UE place group calling ID in the request of RRC connection establishment or RRC connection setup complete message.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410612359.4A CN105554903A (en) | 2014-11-04 | 2014-11-04 | Method for lagged entrance to grouping calling by UE in IDLE state |
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| CN201410612359.4A CN105554903A (en) | 2014-11-04 | 2014-11-04 | Method for lagged entrance to grouping calling by UE in IDLE state |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107979819A (en) * | 2017-12-25 | 2018-05-01 | 海能达通信股份有限公司 | A kind of group in broadband cluster system exhales processing method and processing device |
| CN110662265A (en) * | 2018-06-29 | 2020-01-07 | 成都鼎桥通信技术有限公司 | Reselection access method, device and storage medium |
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| US20110028140A1 (en) * | 2009-07-31 | 2011-02-03 | Motorola, Inc. | Method for group call communication |
| CN102958003A (en) * | 2011-08-30 | 2013-03-06 | 华为技术有限公司 | Group paging method and equipment |
| CN102958002A (en) * | 2011-08-30 | 2013-03-06 | 华为技术有限公司 | Group paging method and equipment |
| CN103404187A (en) * | 2011-03-02 | 2013-11-20 | 高通股份有限公司 | Station-centric multi-user multiple input multiple output (MU-MIMO) |
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| US20050207383A1 (en) * | 2004-03-18 | 2005-09-22 | Carsello Stephen R | Method and system of reducing collisions in an asynchronous communication system |
| US20110028140A1 (en) * | 2009-07-31 | 2011-02-03 | Motorola, Inc. | Method for group call communication |
| CN103404187A (en) * | 2011-03-02 | 2013-11-20 | 高通股份有限公司 | Station-centric multi-user multiple input multiple output (MU-MIMO) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107979819A (en) * | 2017-12-25 | 2018-05-01 | 海能达通信股份有限公司 | A kind of group in broadband cluster system exhales processing method and processing device |
| CN110662265A (en) * | 2018-06-29 | 2020-01-07 | 成都鼎桥通信技术有限公司 | Reselection access method, device and storage medium |
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Application publication date: 20160504 |