CN102300167A - Method and system for realizing fail soft - Google Patents
Method and system for realizing fail soft Download PDFInfo
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- CN102300167A CN102300167A CN2010102088108A CN201010208810A CN102300167A CN 102300167 A CN102300167 A CN 102300167A CN 2010102088108 A CN2010102088108 A CN 2010102088108A CN 201010208810 A CN201010208810 A CN 201010208810A CN 102300167 A CN102300167 A CN 102300167A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention provides a method for realizing fail soft. The method comprises the following steps of: separating a plurality of radio network temporary identifier (RNTI) resources for a cluster service; correlating an RNTI with a cluster; when a core network fails or connection of the core network is unavailable and a terminal initiates a cluster call, transmitting a cluster number and the RNTI to a base station, establishing a cluster example on the base station and triggering periodic cluster paging; and when a network side receives the cluster call of the terminal, processing media data of the cluster service by using the RNTI correlated with a group to which the cluster service belongs, and transmitting the processed media data to the terminal. The invention further provides a system for realizing fail soft. Compared with the prior art, the method and the system have the advantages: due to the adoption of binding of the RNTI with a cluster ID (Identity), the realization difficulty is lowered, the cost is lowered indirectly, and the system is easier for using.
Description
Technical field
The present invention relates to LTE (long term evolution, Long Term Evolution) group system, relate in particular to the fail-soft method and system of a kind of realization.
Background technology
The LTE cluster is meant the technology of using LTE relevant, finishes clustering functionality.The private wireless communication system that trunked communication system develops in order to satisfy industry user's command scheduling demand, use towards specific industry, a large amount of wireless users share a small amount of wireless channel in the system, with the command scheduling is that main body is used, and is a kind of multipurpose, dynamical wireless communication system.Trunked communication system in a government office, the market that has a wide range of applications, field such as public safety, emergency communication, electric power, civil aviaton, petrochemical industry and army.
Trunked communication system has experienced and the similar development course of cell mobile communication systems.First generation group system is the simulation trunked communication system, main support voice communication.The simulation trunked communication system that enters China the earliest is the Actionet system of Nokia company, and it adopts the MPT-1327 signaling, is applied on the 450MHz frequency range.After this, the Smartnet of Ri Ben F.A.S.T and U.S. motorola inc enters China.
Second generation group system is the narrow-band digital trunked communication system, is risen the nineties in 20th century, and beginning is disposed in China about 2004, is current domestic most widely used trunked communication system.The digital clustering communication system support voice is communicated by letter with low speed data (the highest 28.8kbps), representative system is (the European Telecommunications Standards Institute of ETSI, ETSI) Ding Yi land trunked radio (Terrestrial Trunked Radio, TETRA) system, the Integrated Digital Enhanced Network of U.S. Motorola (Integrated Digital Enhanced Networks, iDEN) system, ZTE Co., Ltd is based on open trunking architecture (Global Open Trunking Architecture, the GoTa) system of CDMA1X exploitation, Huawei Tech Co., Ltd is based on the GT800 system of GSM exploitation.From domestic, nearest 1 year, the growth of TETRA network was the fastest, and in the digital cluster communication net that the whole nation has been built, the quantity of TETRA net accounts for the last 2/3.
From the development of present China trunked communication system, the development of trunked communication system lags far behind the development of public's cellular system, and aspects such as its technological innovation and industrial chain are all also complete not to the utmost.Aspect the tenability of data transmission capabilities and multimedia service, present digital arrowband trunked communication system is still relatively backward.For example, the iDEN system time slot and modulator approach are improved the back and the broadband integrated digital enhanced network released (Wide-iDEN WiDEN), is increased to 384kbps with hardware circuit solution; (TETRARelease 2 Enhanced Data Service TEDS), ideally can support to be no more than the hardware circuit solution of 700kbps to the TETRA enhanced data rates for GSM evolution; All do not reach the order of magnitude of Mbps.In addition, aspect the availability of frequency spectrum and covering, existing digital cluster system can not well satisfy the demands.
After the LTE technology is released, the descending 100Mbps that surpasses of system bandwidth, upstream bandwidth surpasses 50Mbps, call set-up time is short, and less than 100ms, satisfy the feature of broadband group system like this: trunked communication system is with half-duplex mode communication, pass through PoC (Push To Talk during work, PTT) the obtaining and discharge of key control channel, the channel utilization height, call proceeding is fast; The user shares down channel, resource utilization height in the group.And trunked communication system can guarantee the privacy and the fail safe of conversation by voice encryption; Be high-priority users or professional priority allocation channel; By the communication under the fail soft function assurance state of emergency; Realize multi-level flexibly packet scheduling command function by dynamic reorganization; The broadband trunked communication system is expanded the broadband services type around " voice ", " data ", " video " these three basic services, comprising: voice class business such as group calling/visual group calling, individual calling/visual individual calling, urgent call; Data services such as mobile information service, high-speed data inquiry, network browsing, mobile office, positioning service; Video class such as video conference, mobile video monitor business; Have quick command scheduling abilities such as grouping busy, directly exhales; The multi-service transmittability of collection voice, data, image and video; Have the network interconnection and off-grid communication capacity, to support straight-through or terminal makes up Mesh network etc.; The network reliability height has strong fail soft and capability to resist destruction; Support the Bulk Call ability of big hot zones, focus period; Call setup is short, and the single system call set-up time is less than 300ms.
The LTE cluster will be inherited the advance of LTE technology, adopt the flat network architecture, reduce service access and postpone.As shown in Figure 1, the LTE cluster network comprises MME, SGW, eNB (base station of evolution) and colony dispatching part, and colony terminal.In the prior art, the LTE cluster has been introduced two transmission channels: cluster control channel (TCCH) and group service channel (TTCH), the notice of the foundation of realization group calling and release, right of speech on TCCH, there is great risk in this method at the one-way channel command transmitting, for example, if information drop-out can cause state machine to go wrong, the state of a plurality of terminals occurs inconsistent; Configuration at TCCH transmission TTCH does not generally realize in the LTE system like this, and LTE adopts the method for blind check to realize, simplify and dispose, such implementation does not make full use of the characteristic of LTE at present.How with cluster and the abundant combination of LTE, performance LTE is in the advantage of cluster, and this is the content of a needs discussion.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of realization fail-soft method and system, makes in core net to go wrong, or does not connect under the situation of core net, can make the cluster operate as normal, improves the robustness of system and shoulders the ability of ruining.
In order to address the above problem, the invention provides the fail-soft method of a kind of realization, comprising: some Radio Network Temporary Identifiers (RNTI) resource is separated be used for group service; Carry out the group of RNTI and cluster related; Core net breaks down or coreless net when connecting, and terminal is initiated trunked call simultaneously, and cluster numbering and RNTI are sent to the base station, and base station establishment cluster example triggers periodic clustered paging; When network side was received the trunked call of terminal, the RNTI of group associations handled the media data of group service under the group service with using, and sends to terminal.
Further, described method also comprises: when described terminal received clustered paging, the RNTI of group associations handled downlink data under use and the described group service, obtains the media data of described group service.
Further, described RNTI is carried out related comprising with group: after network side is set up group, from described some RNTI resources of separating, obtain a RNTI, the cluster numbering of described RNTI and described group is carried out related, described cluster numbering and the incidence relation of RNTI are deposited in the terminal of described group.
Further, when described network side is received the trunked call of terminal, use the RNTI of the affiliated group associations of group service that the media data of group service is handled, the step that sends to terminal comprises: when core net is received trunked call, set up the trunked call entity, trigger clustered paging, set up request message to each base station signalling of bouquet carrying in cluster zone, described cluster carrying is set up and is comprised cluster numbering and related RNTI in the request message, and the cluster carrying is set up in described each base station; Core net signalling of bouquet media data is to described each base station; Described each base station uses the RNTI related with described cluster numbering that described cluster media data is handled, and sends to terminal.
Further, described method comprises that also described network side is revised the incidence relation of described group and described RNTI, and group after upgrading and the incidence relation of RNTI are sent to terminal.
The present invention also provides a kind of realization fail-soft system, comprising: network side, and described network side is used for: some Radio Network Temporary Identifiers (RNTI) resource is separated be used for group service; Carry out the group of RNTI and cluster related; Core net breaks down or coreless net when connecting, and terminal is initiated trunked call simultaneously, and cluster numbering and RNTI are sent to the base station, and base station establishment cluster example triggers periodic clustered paging; When receiving the trunked call of terminal, use the RNTI of the affiliated group associations of group service that the media data of group service is handled, send to terminal.
Further, described system also comprises terminal, and described terminal is used for: when receiving clustered paging, the RNTI of group associations handles downlink data under use and the described group service, obtains the media data of described group service.
Further, described network side is to be used for: some RNTI resources are separated be used for group service; And, set up group after, from described some RNTI resources of separating, obtain a RNTI, described RNTI and the cluster numbering of described group are carried out related, deposit the incidence relation of described cluster numbering and described RNTI in described terminal.
Further, described network side comprises core net and base station, and wherein: described core net is used for: when receiving trunked call, set up the trunked call entity, trigger clustered paging, trigger each base station in cluster zone and set up the cluster carrying, and the cluster numbering is sent to described each base station with related RNTI; And after the cluster carrying was set up in each base station, the signalling of bouquet media data was to described each base station; Described each base station is used for: set up the cluster carrying; And, receive the cluster media data that core net sends after, use and number related RNTI with described cluster described cluster media data is handled, send to terminal.
Further, described network side also is used for: revise the incidence relation of described group and described RNTI, group after upgrading and the incidence relation of RNTI are sent to terminal.
Adopt the method for the invention and system, compared with prior art,, reduced the realization difficulty, reduced cost indirectly, and be more prone to use owing to adopted RNTI and cluster ID binding.
Description of drawings
Fig. 1 is a LTE cluster network structured flowchart.
Fig. 2 is that fail soft trunked call of the present invention is set up procedure chart.
Embodiment
Below in conjunction with drawings and Examples, further specify the present invention.
LTE has introduced RNTI, uses RNTI to distinguish paging channel, broadcast channel, Multicast Channel and common signal channel, and the present invention combines RNTI fully with cluster, and RNTI is combined with professional, grouping, makes full use of the characteristic of LTE.
Technical solution of the present invention is: RNTI cooked up a part, is used for group service, the group and the RNTI of cluster set up incidence relation, such as, a group uses a RNTI;
Under the situation that core net breaks down, the group of cluster and the incidence relation of RNTI still are kept among the UE, when UE initiates trunked call, cluster numbering and RNTI are sent to the base station, and the cluster example is created in the base station, triggers periodic clustered paging, when the base station signalling of bouquet is professional, use the RNTI of the affiliated group associations of this group service that data are handled, when terminal is received clustered paging, use corresponding RNTI to read downlink data and get final product.
Method of the present invention is as follows:
At first carry out initialization, comprising:
0. precondition: RNTI (Radio Network Temporary Identifier) is divided into groups, tell a part and be used for group service, (Trunk Control Entity TCE) goes up as the resource pool unified management to be put into the cluster controlled entity.
1. core net is set up a group of cluster, goes up request RNTI resource to TCE, RNTI resource and this group are carried out related, particularly, with the cluster of this group number carry out related.
2. colony terminal is in subscription data, and the cluster numbering of the group under this terminal is write terminal together with related RNTI.Certainly, can the incidence relation of cluster numbering and RNTI be informed terminal by other modes, the present invention does not limit this yet.
Wherein, after initialization, also can carry out the renewal of group and RNTI incidence relation, comprise: core net realizes the dynamic change of the incidence relation of affiliated group of UE and RNTI by the incidence relation of non-access layer information modification group and RNTI.
After initialization, carry out clustered paging, comprising:
Step S1, UE initiates trunked call by clean culture, when core net is received trunked call, set up the trunked call example, trigger clustered paging, set up the process of cluster carrying simultaneously to all base station triggers in cluster zone, and cluster numbering sent to each base station with related RNTI, particularly, comprising: core net is set up request message to each base station signalling of bouquet carrying in cluster zone, and described cluster carrying is set up and comprised cluster numbering and related RNTI in the request message; The cluster carrying is set up in each base station;
Step S2, after core net was set up cluster and carried successfully in each base station, the signalling of bouquet media data was to each base station;
Step S3, each base station uses the RNTI related with the cluster numbering that the cluster media data is handled, and sends to UE;
Concrete processing method is: use described RNTI, physical message ID and subframe numbers to generate scrambler, CCE is carried out scrambling;
Step S4 after UE receives clustered paging, uses the RNTI related with the cluster numbering of the affiliated group of described clustered paging that downlink data is handled, and reads corresponding cluster media data.
Concrete processing method is: use described RNTI, physical district ID and subframe numbers to generate scrambler, CCE is carried out descrambling, if CRC is correct, resolve DCI, according to DCI data are decoded.
As shown in Figure 2, set up procedure chart, comprising for fail soft trunked call of the present invention:
Step 201, UE application triggers trunked call, UE sends and inserts request message at random to the base station;
Step 202, base station are received and are inserted request message at random, distribute ascending resource, and ascending resource is informed UE by accidental access response message;
Step 203, UE receives accidental access response message, sends RRC (Radio Resource control) and set up request message to the base station on the ascending resource that distributes;
Step 204, the base station receives that RRC sets up request message, distribute relevant physical resource, comprise SRS (Sounding Reference Signal, demodulated reference signal) and PUCCH (Physics Uplink Control Channel, Physical Uplink Control Channel), sets up the UE example, send RRC and set up message to UE;
Step 205, UE receives RRC and sets up message, sends RRC foundation and finish message to the base station on the physical resource of base station assigns, and this RRC sets up to finish and comprises cluster numbering and RNTI information in the message;
Step 206, base station receive that RRC sets up and finish message, if find and core net between path have fault, and carried cluster numbering and RNTI, the analog core net to the base station sends the initial UE context message;
Step 207, the analog core net is received the initial UE context message, the initial UE context request message that structure is inner sends to protocol process module, triggers clustered paging simultaneously, sets up request message to the carrying of protocol process module signalling of bouquet;
Step 208, protocol process module is received paging, triggers paging, receives the initial UE context request message, sets up the incidence relation between UE and the cluster example, sends inner cluster carrying to the analog core net and sets up request message; Simultaneously, send the initial UE context response information, trigger RRC reprovision flow process to the analog core net.
So far finish the loopback of the up unicast data of UE to the cluster example, the RNTI that descending use cluster is relevant carries out data processing, and the terminal that receives data uses the relevant RNTI of cluster to carry out data processing, thereby finishes the fail soft function under the core net failure condition.In fail soft function, same group only allows to set up a UE example with right of speech, adopts First come first served mechanism.
Claims (10)
1. realize fail-soft method for one kind, it is characterized in that, comprising:
The separation of some Radio Network Temporary Identifiers (RNTI) resource is used for group service;
Carry out the group of RNTI and cluster related;
Core net breaks down or coreless net when connecting, and terminal is initiated trunked call simultaneously, and cluster numbering and RNTI are sent to the base station, and base station establishment cluster example triggers periodic clustered paging;
When network side was received the trunked call of terminal, the RNTI of group associations handled the media data of group service under the group service with using, and sends to terminal.
2. the method for claim 1 is characterized in that, described method also comprises:
When described terminal received clustered paging, the RNTI of group associations handled downlink data under use and the described group service, obtains the media data of described group service.
3. method as claimed in claim 1 or 2 is characterized in that, described RNTI is carried out related comprising with group:
After network side is set up group, from described some RNTI resources of separating, obtain a RNTI, described RNTI and the cluster numbering of described group are carried out related, the incidence relation of described cluster numbering and RNTI is deposited in the terminal of described group.
4. the method for claim 1 is characterized in that, when described network side is received the trunked call of terminal, uses the RNTI of the affiliated group associations of group service that the media data of group service is handled, and the step that sends to terminal comprises:
When core net is received trunked call, set up the trunked call entity, trigger clustered paging, set up request message to each base station signalling of bouquet carrying in cluster zone, described cluster carrying is set up and is comprised cluster numbering and related RNTI in the request message, and the cluster carrying is set up in described each base station;
Core net signalling of bouquet media data is to described each base station;
Described each base station uses the RNTI related with described cluster numbering that described cluster media data is handled, and sends to terminal.
5. as claim 1,2 or 4 described methods, it is characterized in that described method comprises that also described network side is revised the incidence relation of described group and described RNTI, group after upgrading and the incidence relation of RNTI are sent to terminal.
6. a group service treatment system is characterized in that, comprising: network side, and described network side is used for: some Radio Network Temporary Identifiers (RNTI) resource is separated be used for group service;
Carry out the group of RNTI and cluster related;
Core net breaks down or coreless net when connecting, and terminal is initiated trunked call simultaneously, and cluster numbering and RNTI are sent to the base station, and base station establishment cluster example triggers periodic clustered paging;
When receiving the trunked call of terminal, use the RNTI of the affiliated group associations of group service that the media data of group service is handled, send to terminal.
7. system as claimed in claim 6, it is characterized in that described system also comprises terminal, described terminal is used for: when receiving clustered paging, the RNTI of group associations handles downlink data under use and the described group service, obtains the media data of described group service.
8. as claim 6 or 7 described systems, it is characterized in that described network side is to be used for: some RNTI resources are separated be used for group service; And, set up group after, from described some RNTI resources of separating, obtain a RNTI, described RNTI and the cluster numbering of described group are carried out related, deposit the incidence relation of described cluster numbering and described RNTI in described terminal.
9. system as claimed in claim 6 is characterized in that described network side comprises core net and base station, wherein:
Described core net is used for: when receiving trunked call, set up the trunked call entity, trigger clustered paging, trigger each base station in cluster zone and set up the cluster carrying, and the cluster numbering is sent to described each base station with related RNTI; And after the cluster carrying was set up in each base station, the signalling of bouquet media data was to described each base station;
Described each base station is used for: set up the cluster carrying; And, receive the cluster media data that core net sends after, use and number related RNTI with described cluster described cluster media data is handled, send to terminal.
10. as claim 6,7 or 9 described systems, it is characterized in that described network side also is used for: revise the incidence relation of described group and described RNTI, group after upgrading and the incidence relation of RNTI are sent to terminal.
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| CN2010102088108A CN102300167A (en) | 2010-06-23 | 2010-06-23 | Method and system for realizing fail soft |
| PCT/CN2010/078065 WO2011160373A1 (en) | 2010-06-23 | 2010-10-25 | Method and system for realizing fail-soft |
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| CN2010102088108A CN102300167A (en) | 2010-06-23 | 2010-06-23 | Method and system for realizing fail soft |
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| WO2013117129A1 (en) * | 2012-02-07 | 2013-08-15 | 电信科学技术研究院 | Method and device for transmitting group call session information |
| WO2014180390A2 (en) * | 2013-12-20 | 2014-11-13 | 中兴通讯股份有限公司 | Trunking group communication public security implementation method and device |
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| CN105451363A (en) * | 2014-09-22 | 2016-03-30 | 普天信息技术有限公司 | Method of random access in narrowband system, base station and user equipment |
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| WO2013117129A1 (en) * | 2012-02-07 | 2013-08-15 | 电信科学技术研究院 | Method and device for transmitting group call session information |
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| CN106537973B (en) * | 2015-07-10 | 2020-01-21 | 海能达通信股份有限公司 | Service management method and device |
| CN106912031A (en) * | 2015-12-23 | 2017-06-30 | 北京信威通信技术股份有限公司 | A kind of support group service fail-soft method of LTE network |
| CN109413764A (en) * | 2017-08-18 | 2019-03-01 | 普天信息技术有限公司 | A kind of fail-soft processing method and equipment |
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| WO2011160373A1 (en) | 2011-12-29 |
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