CN1835609A - Fault reduction realizing method of cluster net communication - Google Patents
Fault reduction realizing method of cluster net communication Download PDFInfo
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Abstract
The method for solving the problem not capable of making phone call after the base station disconnects to the base station controller and comprises: the control unit of base station detects the transmission link of base station; when deciding a transmission interruption happens, the working mode of base station is set as a fail-soft mode; the signaling processing unit configures the frequency carrier, it includes system information, channel configuration and notice message description; then, the signaling processing unit fills out the received system information into the system message field, and transmits the notice message description on NCH channel; after receiving the notice message description, the mobile phone stays in relevant time slot according to a failure-soft channel ID configured for it in order to initiate or receive the PTT calling.
Description
Technical field
The present invention relates to the Digital Clustering mechanics of communication, more particularly, relate to the fail soft implementation method in a kind of cluster Netcom news.
Background technology
The Digital Clustering communication network is the novel mobile communcations system that rise at twentieth century end, and it can also realize any communication between individual and colony except the personal mobile communication service that possesses public's wireless network (GSM, CDMA) and can provide.Wherein, GT800 is a kind of professional Digital Clustering new technology based on time division multiple access.It, can be the professional user high-performance, jumbo group service and function is provided by creatively to the optimization and the fusion of TDMA and TD-SCDMA technology in conjunction with cellular technology, its system stability, and the capability of sustainable development is strong, and has following characteristics:
(1) performance that continues fast.GT800 is by designing the optimization of wireless air interface and the specific aim of call flow, realized the strictest call proceeding rate request of satisfied professional mobile subscriber: fast call set-up time was less than 1 second, PTT (Push to talk, PTT claims PoC again) intercommunication settling time is less than 500 milliseconds.
(2) Feng Fu group service.GT800 can provide the group service abundanter than existing digital cluster system; its support voice group calling, voice broadcast service, functional addressing, position-based route, lag enter, cluster dedicated services such as group calling keeps, dynamically reorganization, group state show, group calling merges, comprise calling, careful monitoring, ambience listening, distant opening/distant are got killed, regional selection, Priority Call, pre-occupied priority call, call blocking, control transfer, cipher key remote destroying, open channel calling, also support the data service of multiple scheduling class simultaneously.
(3) high-speed data service.For satisfying the demand of user to high-speed data service, GT800 present stage can be realized the medium speed data speed rates function of 171.2kbps, and flank speed will further be provided is the data service of 2Mbps.
As new growth point of wireless telecommunications, the GT800 trunking communication more and more receives the concern of numerous operators.Yet, in the prior art, when the transmission of GT800 system is broken down, may break away from contact between a certain base station (BS) of system and the base station controller (BSC), cause the base station to withdraw from service, at this moment, user under this base station can not converse, thereby can influence the trunking communication function.
Summary of the invention
The present invention will solve in the prior art when transmission fault and cause breaking away between base station and the base station controller problem that can cause the user under this base station not converse when getting in touch, to guarantee under the condition of transmission fault, still can to finish clustering functionality, promptly after base station and base station controller break contact, still can realize functions such as group calling.
For solving the problems of the technologies described above, the invention provides the fail soft implementation method in a kind of cluster Netcom news, comprising following steps:
(S11). detect by the main control unit of base station transmission link, when being judged as transmission when interrupting, the mode of operation of base station started being fail soft mode the base station;
(S12). start to behind the fail soft mode, to carrier frequency configuration down, comprise system message, channel configuration and notification message description by main control unit;
(S13). the Signaling Processing Unit of base station is filled into the system message field with the system message of receiving, and goes up the described notification message of transmission at NCH channel (notification channel) and describe;
(S14). after mobile phone received described notification message description, the fail soft channel id according to being its configuration resided in corresponding time slot, called out or receive the PTT calling to initiate PTT.
In the method for the invention, in described step (S11) before, needing the carrier frequency of described base station is configured, is broadcast channel, signaling channel, the fault Traffic Channel of right quantity with a plurality of channel configurations of a carrier frequency; When described base station initiated be fail soft mode after, each described Traffic Channel is a fail soft channel, the corresponding time slot of each fail soft channel; Under the half-rate channel configuration condition, two corresponding time slots of fail soft channel.For described mobile phone, then should be its distribution malfunctions reduction channel id, the corresponding fail soft channel of each fail soft channel id earlier.For the mode of described handset allocation fail soft channel id is: the fail soft channel id is written in the SIM card of described mobile phone; One or more fail soft channel ids can be arranged in each SIM card, allow the cellphone subscriber situation when using select to add corresponding fail soft group.
The invention provides a kind of simple and practical fail soft function, wherein do not need to change mobile phone, and can support the operation of single station.Realize the solution of the present invention, only need on the existing signalling protocols basis, do very little modification and can satisfy, realize than being easier to.When needing the place of emergency communication promptly speedily carrying out rescue work etc., can pass through the solution of the present invention, only making a little base station support radius is communication contacts in tens kilometer range, satisfies emergent fast requirement.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is that the logic function of base station is divided schematic diagram;
Fig. 2 is that mobile phone carries out the flow chart of position when upgrading;
Fig. 3 is the flow chart when mobile phone is initiated group calling;
Fig. 4 is the flow chart of mobile phone when initiatively initiating PTT.
Embodiment
For the ease of the understanding of the present invention, the logic function of base station is once at first described, as shown in Figure 1, divide, the base station can be divided into main control unit (MCU), Signaling Processing Unit (SCP) and voice digital signal processing unit (DSP) according to logic function.Wherein, MCU is used to realize the coffret between whole base station and the base station controller, and realizes the master control function of base station.SCP is used to finish signaling process.DSP is used to finish speech processes.
The configuration of fault base station is uncertain, but its minimal configuration is the carrier frequency in a sub-district.So the base station fault according to the carrier frequency in a sub-district among the present invention is considered, when there is a plurality of carrier frequency a sub-district, can only start a carrier frequency job.A carrier frequency has 8 channels, and the distribution of channel can be disposed.Generally be configured to 1 Broadcast Control Channel (BCCH), 1 signaling channel (SDCCH), 6 Traffic Channels (TCH); Also can be configured to 1 combination BCCH, 7 TCH.Among the present invention, can adopt first kind of configuration mode, also can adopt second kind of configuration mode.When adopting first kind of configuration mode, if the base station fault of some sub-districts then can have 6 fail soft channels.For example, can distribute carrier frequency channel by the mode shown in the table one.
The channel allocation example of table one carrier frequency
| ?BCCH | Time slot 0 | ||
| ?SDCCH | Time slot 1 | ||
| Fail soft channel 0 | Time slot 2 | Public security | Fail soft group ID:110 |
| Fail soft channel 1 | Time slot 3 | Fire-fighting | Fail soft group ID:119 |
| Fail soft channel 2 | Time slot 4 | The traffic police | Fail soft group ID:122 |
| Fail soft channel 3 | Time slot 5 | Government bodies | Fail soft group ID:222 |
| Fail soft channel 4 | Time slot 6 | Municipal administration | Fail soft group ID:333 |
| Fail soft channel 5 | Time slot 7 | Other | Fail soft group ID:999 |
Wherein, each administrative department (or specific company) can be according to table one distribution malfunctions reduction channel, and above fail soft group ID then can be specified by operator.Under normal circumstances, the fail soft channel is disabled.Under the half-rate channel application conditions, the corresponding half-rate channel of fail soft channel.
For each mobile phone, can be according to the situation distribution malfunctions reduction channel id of opening an account, generally each user has only a fail soft channel id.Also can a plurality of fail soft channel ids in each SIM card, allow the cellphone subscriber situation when using select to add corresponding fail soft group.Concrete set-up mode can be write fail soft group id information on cellphone subscriber's SIM (subscriber identification module) card when the cellphone subscriber opens an account.
In order to realize fail soft function, the base station there is following requirement.Wherein, main frequency point information is preserved by MCU.MCU sends to SCP with configuration messages, and described configuration messages comprises system message and notification message.MCU mainly finishes the preservation of configuration messages, the structure of system message and the structure of notification message.When fail soft, the main what's new of SCP is a loopback of finishing signaling, the activation of fail soft channel and channel management; And the main what's new of DSP is a loopback of finishing speech frame.
Under normal mode, the base station worker often work, and mobile phone can normally use.In order to realize fail soft function, need to carry out following steps:
(S11) during operate as normal, MCU can the detected transmission link, after a period of time of breaking down, can be judged as transmission and interrupt, and can start fail soft mode this moment.This judgement time can dispose (can change), to adapt to the different requirements to transmission.
(S12) behind the startup fail soft mode, MCU to carrier frequency configuration down, comprises system message, channel configuration and notification message description according to the fail soft mode operational data of preserving.
(S13) then, SCP is filled into the system message field with the system message of receiving, and the description that sends a notification message on the NCH channel.
(S14) behind the notified message semantic definition of mobile phone, the fail soft channel according on its SIM card resides in corresponding time slot, answering downlink voice, or makes a call by the PTT key.
After fault finished, MCU detected transmission link-recovery was normal, can with the base station controller communication, then end present fail-soft operation pattern by order, change normal operation mode over to.
Behind base station initiated fail soft mode, the situation that may occur of mobile phone comprises: (1) falls net (this moment, failover was done in the base station), online (startup of base station fail soft mode) again, and can upgrade by occurrence positions this moment.(2) other operate as normal sub-district level satisfy the gravity treatment requirement, and this moment, mobile phone can be from the sub-district gravity treatment at place, fault base station to other work sub-districts.(3) promptly come from other sub-district roamings in the sub-district from other sub-district gravity treatments to place, fault base station, also can upgrade by occurrence positions this moment.(4) mobile phone is started shooting in fault cells, and meeting this moment executing location is new technological process more, resides in this fault cells.(5) in the fault cells shutdown, do not influence any operation.
When fail soft mode, mobile phone can be initiated group calling in resident fault group, also can answer group calling.Because group calling is initiated by the base station, mobile phone can only carry out group calling on fixing fail soft channel, can not initiate the group calling of non-fail soft channel.Mobile phone has only basic group calling function, not the support point calling function when the fail soft state.In the fail soft stage, mobile phone can carry out following operation: 1) initiate PTT and call out: by pinning the PTT key, can make a call, this is the same with normal PTT flow process.2) answering PTT calls out: as long as mobile phone resides in group-calling channel, just can listen to group calling.3) mobile phone shutdown: do not influence.4) mobile phone power-on: meeting this moment executing location is new technological process more, after the position is upgraded successfully, and the resident fault cells of meeting; Mobile phone for fear of no group calling function is resident in fault cells, can mark and filters the mobile phone that these do not have the group calling function by looking into class, and upgrade refusal by the position, avoids these mobile phones to land this sub-district.
Therebetween, SCP need handle more new technological process of position, PTT access process.DSP then finishes the voice channel loopback, mainly is the loopback of TRAU (code conversion and Rate Adapter Unit) speech frame.Position with up trau frame is moved descending trau frame sends.This function is transparent for mobile phone, and mobile phone does not need to change handling process, and the user can show by fail soft group ID state and know and be in fault group state at present.
When base station initiated be fail soft mode after, if following any situation takes place mobile phone, mobile phone will carry out the position to be upgraded: (A) fall behind the net online, (B) enter this place, base station from other sub-districts sub-district, (C) again and start shooting in the sub-district at this place, base station in the sub-district at this place, base station.Wherein, send out position updating request on the mobile phone, the SCP of base station issues the inquiry of class mark, VGCS (voice group call service among the CLASSMARK2 that reports by mobile phone, Voice Group Call Service) sign, confirm whether mobile phone supports clustering functionality, if do not support, then (REJECT) information is refused in passback.If support, then (ACCEPT) information is accepted in passback.Be illustrated in figure 2 as the flow chart that mobile phone location upgrades, MS wherein represents mobile phone, and BTS represents base transceiver station (abbreviation base station), wherein: at first send Channel Request by mobile phone to BTS, promptly send channel request; Then, BTS sends Immediate Assignment to mobile phone, promptly issues assignation information immediately, gives mobile phone assignment dedicated channel; Then, mobile phone sends Location UpdatingRequest to BTS, promptly sends position updating request; Then, BTS sends Classmark Enquire to mobile phone, promptly issues the inquiry of class mark, the professional ability of inquiry mobile phone; Then, mobile phone sends ClassmarkChange to BTS, promptly sends the response of class mark, the professional ability of report mobile phone; If mobile phone is supported trunking communication, then BTS sends Location Updating Accept to mobile phone, promptly accepts its position updating request; At last, BTS sends Channel Release to mobile phone, promptly discharges channel, finishes this flow process.
By above-mentioned position new technological process more, support the mobile phone of trunking communication can reside in the group-calling channel of fail soft sub-district.Under fail soft mode, group calling can be set up by flow process shown in Figure 3 in the base station.Wherein, after the system message and notification message that SCP reception MCU brings, can activate group-calling channel,, initiate group calling in the group calling message that NCH broadcasting is taken a message and described.And the cycle issues UPLINK FREE message.Among Fig. 3, SYS-INFO represents system message, mainly is some cell informations of broadcasting; NCH represents notification channel, mainly broadcasts the group calling notification message, and UPLINK FREE represents the up free time, is mainly used in notice mobile phone uplink state.
Equally, under fail soft mode, mobile phone can be initiated PTT by flow process shown in Figure 4.When mobile phone is initiated the PTT calling, after SCP receives channel request, can descend GRANT message, and put UPLINKBUSY.Send out SABM on the mobile phone, UA is returned in the base station, and mobile phone takies up.When mobile phone discharges the PTT key, can upload UPLINK RELEASE, issue UPLINK FREE after receive the base station, discharge up.Among Fig. 4, UPLINK FREE represents the up free time, and this moment, mobile phone can be initiated the up channel access; UPLINKACCESS represents that up channel inserts, and promptly mobile phone takies up to base station requests; VGCS_UPLINK_GRANT represents the group call uplink affirmation, and promptly the base station allows mobile phone to take up; UPLINK_BUSY: other mobile phones are notified in the base station, and up occupied, other mobile phones can not be initiated up access; SABM: layer three information request; UA: the base station is to the affirmation of SABM; Talking: show that present speaker can talk; UPLINK RELEASE: the speaker finishes speaking, and discharges the PTT button, to the up release of base station requests.
From top description as can be known, when being in fail soft mode, a lot of users understand a shared group-calling channel.Take for a long time or channel resource is hung for fear of a user, up occupied after, the base station can start fail soft Channel Detection timer, if surpass the scheduled time (can specifically set, generally set 1 minute), then discharges up by force.
When the fault of a certain sub-district, relation between it and the adjacent cell has following several situation: (1) adjacent cell is normal, and the information that this fault cells is arranged in the neighborhood region correlation chart of adjacent cell is (in cluster communication system, all there are a lot of adjacent cells each sub-district, all there is a neighborhood region correlation chart each sub-district, the inside has disposed some main information of adjacent area, be used for the gravity treatment and the switching of mobile phone), at this moment, the mobile phone of adjacent cell can be received the system message of fault cells, but, can not activate the fault cells channel, so there is not switching command in the transmission of eating dishes without rice or wine because base station controller and fault cells transmission are interrupted.The mobile phone roaming of fault cells is during to contiguous normal cell, and mobile phone can only be finished by the sub-district gravity treatment.The mobile phone roaming of normal cell is to this fault cells, and mobile phone can only be finished by the sub-district gravity treatment.
(2) adjacent cell is normal, and has overlapping covering between two sub-districts, and fail soft will not carried out in the fault base station this moment, mainly be can switch to the normal cell that does not have fault for the mobile phone that guarantees this sub-district.
(3) also fault of adjacent cell.Be equivalent to two adjacent orphan stations this moment, do not disturb mutually, when mobile phone moves to the another one sub-district, can reside in that sub-district by the sub-district gravity treatment.
By top description as can be known, the invention provides a kind of simple and practical fail soft function, wherein do not need to change mobile phone, and can support the operation of single station.Realize the solution of the present invention, only need on the existing signalling protocols basis, do very little modification and can satisfy, realize than being easier to.When needing the place of emergency communication promptly speedily carrying out rescue work etc., can pass through the solution of the present invention, only making a little base station support radius is communication contacts in tens kilometer range, satisfies emergent fast requirement.
Claims (8)
1, the fail soft implementation method in a kind of cluster Netcom news is characterized in that, may further comprise the steps:
(S11). detect by the main control unit of base station transmission link, when being judged as transmission when interrupting, the mode of operation of base station started being fail soft mode the base station;
(S12). start to behind the fail soft mode, to carrier frequency configuration down, comprise system message, channel configuration and notification message description by main control unit;
(S13). the Signaling Processing Unit of base station is filled into the system message field with the system message of receiving, and sends described notification message description on the NCH channel;
(S14). after mobile phone received described notification message description, the fail soft channel id according to being its configuration resided in corresponding time slot, called out or receive the PTT calling to initiate PTT.
2, the fail soft implementation method in the cluster according to claim 1 Netcom news, it is characterized in that, in described step (S11) before, needing the carrier frequency of described base station is configured, is broadcast channel, signaling channel, the fault Traffic Channel of right quantity with a plurality of channel configurations of a carrier frequency;
When described base station initiated be fail soft mode after, each described Traffic Channel is a fail soft channel, the corresponding time slot of each fail soft channel;
Under the half-rate channel configuration condition, two corresponding time slots of fail soft channel.
3, the fail soft implementation method in the cluster according to claim 2 Netcom news is characterized in that, for described mobile phone, should be its distribution malfunctions reduction channel id, fail soft channel of each fail soft channel id correspondence earlier.
4, the fail soft implementation method in the cluster according to claim 3 Netcom news is characterized in that, for the mode of described handset allocation fail soft channel id is: the fail soft channel id is written in the SIM card of described mobile phone; One or more fail soft channel ids are arranged in each SIM card.
5, the fail soft implementation method in the cluster according to claim 1 Netcom news is characterized in that, when described base station initiated be fail soft mode after, realize the processing of call signaling and the loopback of voice the base station.
6, according to the fail soft implementation method in each described cluster Netcom news among the claim 1-5, it is characterized in that, when described base station initiated be fail soft mode after, if detecting the transmission link of base station, the main control unit of described base station recovers normal, then interrupt the fail soft mode of base station, change normal mode of operation over to.
7, according to the fail soft implementation method in each described cluster Netcom news among the claim 1-5, it is characterized in that, when described mobile phone because of initiate PTT and call out or receive PTT call out taken up after, described base station initiated its fail soft Channel Detection timer, if up taking surpassed the scheduled time, then discharges described occupied up by force.
8, according to the fail soft implementation method in each described cluster Netcom news among the claim 1-5, it is characterized in that, in described step (S11), when described base station transmits is interrupted, if the sub-district operate as normal at its neighbor base station place, and there are overlapping covering in this adjacent cell and described fault base station cell, and then described fault base station can not switch to fail soft mode.
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| CN104378742A (en) * | 2013-08-15 | 2015-02-25 | 中兴通讯股份有限公司 | Call service achieving method and device and indicating information issuing method and device |
| CN104661247A (en) * | 2013-11-19 | 2015-05-27 | 成都鼎桥通信技术有限公司 | Measurement control method under fault single station mode |
| CN104661247B (en) * | 2013-11-19 | 2018-03-30 | 成都鼎桥通信技术有限公司 | A kind of measurement control method under the pattern of Trouble ticket station |
| WO2017008195A1 (en) * | 2015-07-10 | 2017-01-19 | 海能达通信股份有限公司 | Service management method and device therefor |
| CN107454607A (en) * | 2016-05-30 | 2017-12-08 | 北京信威通信技术股份有限公司 | The implementation method and device of a kind of fail soft mode |
| CN110958649A (en) * | 2018-09-26 | 2020-04-03 | 成都鼎桥通信技术有限公司 | Reselection method, terminal and storage medium |
| CN110958649B (en) * | 2018-09-26 | 2021-12-21 | 成都鼎桥通信技术有限公司 | Reselection method, terminal and storage medium |
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