CN103889054A

CN103889054A - AP, mobile terminal and mobile terminal positioning system and method

Info

Publication number: CN103889054A
Application number: CN201410145050.9A
Authority: CN
Inventors: 李青; 郭伟; 邬江兴; 于宏毅; 张效义; 刘建辉; 张剑; 朱义君; 刘洛琨; 邹艳芳; 徐文艳
Original assignee: PLA Information Engineering University
Current assignee: PLA Information Engineering University
Priority date: 2014-04-11
Filing date: 2014-04-11
Publication date: 2014-06-25
Anticipated expiration: 2034-04-11
Also published as: CN103889054B

Abstract

The invention discloses an AP, a mobile terminal and a mobile terminal positioning system and method. The mobile terminal positioning system comprises the AP, N mobile terminals and a back-end processing module. The AP comprises a first wireless transceiving module and a visible light receiving module, wherein the first wireless transceiving module is in communication with the mobile terminals in a radio mode, and the visible light receiving module is in communication with the mobile terminals in a visible light communication mode. Each mobile terminal correspondingly comprises a second wireless transceiving module and a visible light transmitting module, wherein each second wireless transceiving module is in communication with the AP in a radio mode, and each visible light transmitting module is in communication with the AP in a visible light communication mode. It can be seen that staff, serving as the mobile terminals, in a mine and the AP are cooperated to accomplish data transmission of the positioning service in a visible light mode and in a radio mode, and then the back-end processing module processes data to achieve staff positioning; compared with a network with a single communication mode, a communication network, based on a photoelectron hybrid communication mode, of the mobile terminal positioning system and method is more stable, and therefore the negative influence caused by the channel environment only relying on the single communication mode is effectively eliminated.

Description

A kind of AP, mobile terminal and mobile terminal location system and method

Technical field

The invention belongs to mobile terminal monitored and field of locating technology, relate in particular to a kind of AP(Access Point, wireless access points), mobile terminal and mobile terminal location system and method.

Background technology

Under ore deposit, operation exists that Active workings disperses, overlay area is large and the severe features such as security incident that easily occur of environment, for these features, is the life security that ensures operating personnel under ore deposit, to personnel under ore deposit carry out security monitoring and positioning service become essential.

Current, personnel under ore deposit are positioned to main employing based on RFID(Radio Frequency Identification, radio frequency identification) navigation system of technology or based on Wi-Fi(Wireless Fidelity, Wireless Fidelity) navigation system of technology.Wherein, the navigation system based on RFID technology relies on the fixing less radio-frequency card reader of laying to adopt contact or contactless mode to carry out personnel positioning; In navigation system based on Wi-Fi technology, the personnel under each ore deposit of related media that carry adopt competitive way access Wi-Fi control technology to realize personnel positioning.

Above-mentioned two kinds of locate modes all adopt single communication mode, thereby tunnel circumstance complication or experience accident under ore deposit (for example landslide) and while causing unstable networks, communication link to disconnect, can not ensure personal information under ore deposit in time, effectively upload, and then affected personnel positioning.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of AP, mobile terminal and mobile terminal location system and method, adopt visible ray and two kinds of communication modes of radio to work in coordination with the transfer of data of positioning service, effectively overcome the adverse effect that while only relying on single communication mode, channel circumstance brings.

For this reason, openly following technical scheme of the present invention:

A kind of wireless access points AP, the first identification information that described AP is corresponding unique, described AP comprises the first radio receiving transmitting module and visible ray receiver module, wherein:

The visible ray hotspot coverage of the radio signal coverage of described the first radio receiving transmitting module and described visible ray receiver module is identical;

Described visible ray receiver module comprises K photodiode PD, the second identification information corresponding to each described PD, and described K is greater than 1 natural number;

Described the first radio receiving transmitting module, send for the each destination object in described radio signal coverage the Location Request that described destination object is positioned, wherein, described Location Request comprises positioning service type, and described positioning service type is corresponding with the residing scene of described destination object; And send request with corresponding locating information or the locating information sending of wireless system according to different positioning service types for the destination object receiving in described radio signal coverage, and in the time receiving locating information, report described locating information, in the time receiving locating information and send request, processing described locating information sends request, wherein, the 3rd identification information that described locating information comprises described the first identification information and described destination object;

Described PD, for receiving the locating information that the destination object in its visible ray hotspot coverage is uploaded with line-of-sight propagation, in described locating information, add the second identification information of described PD, and report the locating information of having added after described the second identification information.

Above-mentioned AP, preferably, described positioning service type comprises concentrated positioning service, cycle positioning service and roll-call positioning service, wherein, described concentrated positioning service is the scene in mine entrance corresponding to destination object, the scene of the corresponding destination object of described cycle positioning service and described roll-call positioning service tunnel and face under ore deposit.

Above-mentioned AP, preferably, described the first radio receiving transmitting module also for: in the time that described the first radio receiving transmitting module or described visible ray receiver module receive the alert service data of destination object, send to the each destination object in described radio signal coverage the request of control, stop sending other the each business information except alert service to control described each destination object;

Described alert service data comprise the 3rd identification information and warning message of destination object.

A kind of mobile terminal, the 3rd identification information that described mobile terminal is corresponding unique, described mobile terminal comprises the second radio receiving transmitting module and visible ray sending module, wherein:

Described the second radio receiving transmitting module, for in the time receiving the Location Request that comprises positioning service type, carry out the one in following operation according to different positioning service types correspondences: send locating information with wireless system, or send request with wireless system transmission locating information, or inoperation;

Described visible ray sending module, for receiving Location Request and sending when locating information, for described Location Request undo with wireless system at described the second radio receiving transmitting module; Described the second radio receiving transmitting module with wireless system send locating information send request and described locating information send request processed after, with line-of-sight propagation send locating information; In the time that described the second radio receiving transmitting module receives Location Request and inoperation, send locating information with line-of-sight propagation.

Above-mentioned mobile terminal, preferred, described the second radio receiving transmitting module is also for sending alert service data with wireless system, and described visible ray sending module is also for sending alert service data with line-of-sight propagation.

A kind of mobile terminal location system, comprises AP as above and N mobile terminal as above, and described AP intercoms mutually with described mobile terminal, and described N is greater than 1 natural number, and described navigation system also comprises:

Back end processing module, the locating information reporting for receiving described AP, and described locating information is analyzed and processed, obtain the positional information of each mobile terminal according to the first identification information in described locating information, the second identification information, the 3rd mark letter.

A kind of mobile terminal locating method, based on above-described navigation system, the method comprises:

Described AP sends to the each mobile terminal in its radio signal coverage the Location Request that described mobile terminal is positioned, wherein, described Location Request comprises positioning service type, and described positioning service type is corresponding with the residing scene of described mobile terminal;

Each mobile terminal, in the time receiving the Location Request of described AP transmission, is carried out the one in following operation according to different positioning service types correspondences: send locating information with wireless system or line-of-sight propagation to described AP; Or send locating information with wireless system to described AP and send request, and send request after processed and send locating information with line-of-sight propagation to described AP in described locating information;

Described AP, in the time that the locating information that receives mobile terminal sends request, processes described locating information and sends request; In the time receiving the locating information of mobile terminal with wireless system, report described locating information; In the time receiving the locating information of mobile terminal with visible light communication form, in described locating information, add corresponding described the second identification information, and report the locating information of having added the second identification information;

The locating information that described back end processing module reports described AP is analyzed and is processed, and obtains the positional information of described each mobile terminal according to the first identification information, the second identification information, the 3rd identification information in described locating information.

Said method, preferred, the corresponding one of carrying out in following operation of the different positioning service types of described foundation: send locating information to described AP; Or send locating information with wireless mode to described AP and send request, and send request after processed and send locating information with line-of-sight propagation to described AP in described locating information, specifically comprise:

When described positioning service type is for concentrating when positioning service, described mobile terminal sends locating information with any one in wireless system or line-of-sight propagation to described AP;

In the time that described positioning service type is cycle positioning service, described mobile terminal sends locating information with wireless system to described AP and sends request, and after described locating information sends request by described AP processing, send locating information with line-of-sight propagation to described AP;

In the time that described positioning service type is roll-call positioning service, described mobile terminal sends locating information with wireless system to described AP.

Said method, preferred, described AP processes described locating information and sends request in the time that the locating information that receives mobile terminal sends request, and specifically comprises:

Described AP sends confirmation to described mobile terminal;

Described AP accesses described mobile terminal according to the 3rd identification information of described mobile terminal in the mode of poll.

Said method, preferably, the locating information that described back end processing module reports described AP is analyzed and is processed, and obtains the positional information of described each mobile terminal according to the first identification information, the second identification information, the 3rd identification information in described locating information, specifically comprises:

If described locating information is the information that described AP obtains with wireless system, described back end processing module utilizes the first identification information and the 3rd identification information in described locating information to position corresponding mobile terminal;

If described locating information is the information that described AP obtains with line-of-sight propagation, described back end processing module utilizes the second identification information and the 3rd identification information in described locating information to position corresponding mobile terminal.

Said method, preferred, also comprise:

In the time that described mobile terminal sends the locating information failure of concentrating positioning service to described AP, described AP sends information to described mobile terminal;

Described mobile terminal sends to described AP the locating information of concentrating positioning service again.

Said method, preferred, also comprise:

Pre-establish the priority level of cycle positioning service, roll-call positioning service and alert service, the priority level of described each business is specially: the priority of alert service is the priority higher than cycle positioning service higher than the priority of the priority of roll-call positioning service, roll-call positioning service.

Said method, preferred, also comprise:

In the time that described AP receives the alert service data of mobile terminal, send to the each mobile terminal in its radio signal coverage the request of control, stop sending other the each business information except alert service to control described each mobile terminal;

Described back end processing module receives the alert service data that described AP reports, according to the processing of reporting to the police of described alert service data.

Said method, preferred, also comprise:

Described back end processing module adopts fingerprint recognition location algorithm to position with the mobile terminal under the locating information of wireless system reception AP.

The mobile terminal location system that the embodiment of the present invention provides comprises AP, N mobile terminal and back end processing module, described AP has comprised the first radio receiving transmitting module communicating with wireless system and mobile terminal and the visible ray receiver module communicating with line-of-sight propagation and mobile terminal, mobile terminal is corresponding has comprised the second radio receiving transmitting module and the visible ray sending module that can be respectively communicate by wireless system and line-of-sight propagation and described AP, visible, utilize mobile terminal location system of the present invention can realize the transfer of data of having worked in coordination with positioning service between personnel under ore deposit (as mobile terminal) and AP by visible ray and two kinds of communication modes of radio, and then realize personnel positioning by back end processing module by data processing, compared to the network based on single communication mode in prior art, communication network based on photoelectricity mixed communication mode of the present invention is more stable, when a kind of communication link disconnection therein, rationally utilize another kind of communication link to realize transfer of data, thereby, the present invention has overcome the adverse effect that while only relying on single communication mode in prior art, channel circumstance brings largely, can more effectively realize personnel positioning.

Brief description of the drawings

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the disclosed AP structural representation of the embodiment of the present invention one;

Fig. 2 is the disclosed mobile terminal structure schematic diagram of the embodiment of the present invention three;

Fig. 3 is the disclosed mobile terminal location system structural representation of the embodiment of the present invention five;

Fig. 4 is the disclosed mobile terminal locating method flow chart of the embodiment of the present invention six;

Fig. 5 is the disclosed superframe structure schematic diagram of the embodiment of the present invention six;

Fig. 6 is the disclosed beacon frame structure schematic diagram of the embodiment of the present invention six;

Fig. 7 is the disclosed identity ID frame structure of the embodiment of the present invention six schematic diagram;

Fig. 8 is the disclosed poll-beacon frame structure of the embodiment of the present invention six schematic diagram;

Fig. 9 is the disclosed concentrated confirmation-beacon frame structure schematic diagram of the embodiment of the present invention seven;

Figure 10 is the interaction flow schematic diagram of the disclosed concentrated roll-call of the embodiment of the present invention nine location;

Figure 11 is the disclosed concentrated roll-call locating channel distribution condition schematic diagram of the embodiment of the present invention nine;

Figure 12 is the interaction flow schematic diagram of the disclosed cycle location of the embodiment of the present invention nine;

Figure 13 is the channel usage schematic diagram of the disclosed periodicity of the embodiment of the present invention nine location;

Figure 14 is the channel behaviour in service schematic diagram of the disclosed not timing point ring service of the embodiment of the present invention nine.

Embodiment

For quote and know for the purpose of, hereinafter use technical term, write a Chinese character in simplified form or abridge sum up be explained as follows:

RFID:Radio Frequency Identification, radio RF recognition technology, is identified specific objective and is read and write related data by wireless signal, and without setting up machinery between recognition system and specific objective or optics contacts.

Wi-Fi:Wireless Fidelity, with the interconnected technology of wireless mode, has ripe consensus standard by mobile device.

VLC:Visible light communication, visible light communication technology, a kind of novel high speed communication technology, utilizes the quick break-make of LED lamp to obtain signal of communication.

LED:light-emitting diode, light-emitting diode, is widely used in illuminating lamp technology at present.

PD:Photo Diode, photodiode, in visible light communication technology, for receiving visible light signal.

AP:Access Point, WLAN (wireless local area network) central access point.

GIS:Geografic Information System, GIS-Geographic Information System, uses this technology to position mobile terminal in the present invention.

For making object, technical scheme and the advantage of the embodiment of the present invention clearer, 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 embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

The present invention discloses a kind of AP, mobile terminal and mobile terminal location system and method, for to environment comparatively the mobile terminal of complex scene (for example, under ore deposit) position, when concrete enforcement is of the present invention, can be using the inventive method as MAC(Media Access Control, media are got involved key-course) agreement realization location.Below will describe in detail to the present invention by each embodiment.

Embodiment mono-

The embodiment of the present invention one discloses a kind of wireless access points AP, the first identification information that this AP is corresponding unique, and as shown in Figure 1, this AP comprises the first radio receiving transmitting module 101 and visible ray receiver module 102.

The visible ray hotspot coverage of the radio signal coverage of the first radio receiving transmitting module 101 and visible ray receiver module 102 is identical.

Visible ray receiver module 102 comprises K PD(Photo Diode, photodiode), the second identification information that each PD is corresponding unique, K is greater than 1 natural number.

The first radio receiving transmitting module 101, send for the each destination object in described radio signal coverage the Location Request that described destination object is positioned, wherein, described Location Request comprises positioning service type, and described positioning service type is corresponding with the residing scene of described destination object; And send request with corresponding locating information or the locating information sending of wireless system according to different positioning service types for the destination object receiving in described radio signal coverage, and in the time receiving locating information, report described locating information, in the time receiving locating information and send request, processing described locating information sends request, wherein, the 3rd identification information that described locating information comprises described the first identification information and described destination object.

Wherein, its function is realized in the first concrete wireless base station that adopts of radio receiving transmitting module 101.

Particularly, in the present embodiment, positioning service type comprises concentrated positioning service, cycle positioning service and roll-call positioning service, wherein, concentrate positioning service corresponding to destination object the scene in mine entrance, the scene of the corresponding destination object of cycle positioning service and described roll-call positioning service tunnel and face under ore deposit.In the time that each miner personnel enter mine entrance, AP, using each miner personnel as destination object, carries out concentrated positioning service to the miner personnel in its radio signal coverage; When each miner personnel are under ore deposit when tunnel and face, AP according to actual location demand to miner personnel execution cycle positioning service or roll-call positioning service.

Correspondingly, concentrate positioning service or roll-call positioning service between AP and miner personnel time, the first radio receiving transmitting module 101 receives the locating information that miner personnel send with wireless system, and reports this locating information; Carry out cycle positioning service between AP and miner personnel time, the first radio receiving transmitting module 101 receives the locating information that miner personnel send with wireless system and sends request, and processes this locating information and send request.

In the present embodiment, be specially AP and distribute unique network address, for each PD distributes unique short address and distributes unique ID(IDentity for each destination object, identify label number), be used to follow-up destination object is positioned foundation is provided.

The AP of the present embodiment can, in the comparatively complicated scene of the inferior environment in ore deposit, by intercoming mutually with mobile terminal, and be aided with corresponding follow-up data processing module, realizes mobile terminal is positioned.

Embodiment bis-

The embodiment of the present invention two continues the function of AP in embodiment mono-to expand, particularly, in the present embodiment two, the first radio receiving transmitting module 101 also for: in the time that the first radio receiving transmitting module 101 or visible ray receiver module 102 receive the alert service data of destination object, send to the each destination object in its wireless signal coverage the request of control, this control request stops sending other the each business information except alert service for controlling described each destination object.

Described alert service data comprise the 3rd identification information and warning message of destination object.Particularly, described alert service data comprise ID and the warning message of destination object.

Wherein, due in practical application scene,, may there is emergency situation in tunnel or face place under ore deposit for example.And in the time that emergency situation occurs, for farthest mitigation, needing the very first time to realize reports to the police and related personnel is positioned, the present embodiment is ID and the warning message guaranteeing at very first time success receiving target object, the burst alert data that simultaneously adopts radio channel and visible ray channel receiving target object to upload, when with guarantee, a kind of connection of channel goes wrong therein, still can successfully transmit required alert data by another kind of channel, in case cause alert data transmission delay, and in the time that visible ray receiver module 101 receives alert data, each destination object in its radio signal coverage sends the request of control, require all destination objects to stop sending other business datums, to allow the destination object in critical place to carry out alarm communication or other dispatching communications.

The present embodiment two is on the basis of conventional positioning service, for emergency situation, this phenomenon of burst accident may occur in practical application scene, for AP has added the corresponding function that burst is reported to the police processing, dispatched, to realize in the time there is burst accident, in time destination object is happened suddenly to report to the police and locate, facilitate the follow-up processing of reporting to the police in time, alleviate damage.

Embodiment tri-

The embodiment of the present invention three discloses a kind of mobile terminal, the 3rd identification information that described mobile terminal is corresponding unique.The structure of the present embodiment mobile terminal and function are corresponding with structure, the function of the disclosed AP of above embodiment, and both can realize mobile terminal is positioned by intercoming mutually and being aided with corresponding localization process.

The 3rd identification information of mobile terminal is specially the ID of mobile terminal, and the present embodiment mobile terminal specifically communicates as the destination object of describing in embodiment and AP.

Refer to Fig. 2, this mobile terminal comprises the second radio receiving transmitting module 201 and visible ray sending module 202.

The second radio receiving transmitting module 201, for in the time receiving with wireless system the Location Request that comprises positioning service type, one according in the following operation of the corresponding execution of different positioning service types: send locating information with wireless system, or send request with wireless mode transmission locating information, or inoperation;

Visible ray sending module 202, for receiving Location Request and sending when locating information, for described Location Request undo with wireless system at described the second radio receiving transmitting module; Described the second radio receiving transmitting module with wireless system send locating information send request and described locating information send request processed after, with line-of-sight propagation send locating information; In the time that described the second radio receiving transmitting module receives Location Request and inoperation, send locating information with line-of-sight propagation.

The present embodiment is integrated in the second radio receiving transmitting module 201 and visible ray sending module 202 in the power supply box of head light, and connect head lamp, utilize head lamp LED(light emitting diode, light-emitting diode) send upstream data (being locating information) to the PD that is laid in mine mouth and top, tunnel as lighting source time.

Corresponding to three kinds of positioning services corresponding to AP in embodiment mono-, the same corresponding three kinds of positioning services of the mobile terminal of the present embodiment.In the time receiving the Location Request of concentrating positioning service, mobile terminal selects current visible ray or radio channel to upload self poisoning information at random; In the time receiving the Location Request of cycle positioning service, mobile terminal is selected radio channel to send locating information to send request, and described locating information send request processed after, adopt visible ray channel to send locating information; In the time receiving the Location Request of roll-call positioning service, mobile terminal selects radio channel to send locating information, thereby can not exert an influence to ongoing cycle positioning service on visible ray channel.

Embodiment tetra-

The embodiment of the present invention four continues the mobile terminal in embodiment tri-to expand, in the present embodiment, the second radio receiving transmitting module 201 is also for sending alert service data with wireless system, and visible ray sending module 201 is also for sending alert service data with line-of-sight propagation.

The structure of mobile terminal in the present embodiment four, function are corresponding with structure, the function of AP in embodiment bis-.For rapidity and the validity of the alert data transmission of ensureing in emergency circumstances to happen suddenly, the mobile terminal of the present embodiment adopts radio channel and visible ray channel to upload burst alert data simultaneously, for follow-up emergency treatment is raced against time, and mitigation of consequences.

Embodiment five

The present embodiment five discloses a kind of mobile terminal location system, and as shown in Figure 3, this system comprises above disclosed AP100, a N mobile terminal 200 and back end processing module 300, and AP100 intercoms mutually with N mobile terminal 200.

Wherein, described N is greater than 1 natural number,

Back end processing module 300, for receiving the locating information that AP100 reports, and described locating information is analyzed and processed, obtain the positional information of each mobile terminal according to the first identification information in described locating information, the second identification information, the 3rd mark letter.

In order to realize uploading of personnel's positioning service data under ore deposit, system of the present invention adopts the photoelectricity hybrid network that has center (AP), and the each mobile terminal in AP and its coverage forms a unit networks, utilizes Centroid to dispatch each terminal access hybrid network network.Wherein, Centroid AP comprises 1 wireless base station, some PD receiving nodes, and AP distributes unique network address, and each PD distributes short address; Miner's terminal configuration radio receiving transmitting module, LED lamp, and be the unique ID of miner's terminal distribution.

Miner's terminal sends with radio or visible ray mode the locating information that comprises its identity ID, the locating information that in the wireless receiving module of AP or PD receiving node receiving uplink, miner's terminal sends.Afterwards, the wireless base station that AP is included and multiple PD adopt TDMA(Time Division Multiple Address, time division multiple access) technology is sent to back end processing module by the data of reception and processes.

Embodiment six

Based on above disclosed mobile terminal location system, the present embodiment six discloses a kind of mobile terminal locating method, and as shown in Figure 4, the method comprises:

S401: described AP sends to the each mobile terminal in its radio signal coverage the Location Request that described mobile terminal is positioned, wherein, described Location Request comprises positioning service type, and described positioning service type is corresponding with the residing scene of described mobile terminal.

At present, visible light communication can be realized the transmission rate of average 500M, and radio channel actual transfer rate is very low, generally below 100,000,000.Under ore deposit, in positioning service, uploading of positioning service data is main target, and data volume is larger, and therefore visible ray link larger transmission rate is only used as up link by the present invention, as business datum passage; And radio link is in most cases as down link, as control channel, for the transmission of control information, thereby realize the reasonable distribution to two kinds of communication link collaborative works.

Correspondingly, in the present embodiment, for different scenes, positioning service is divided into three kinds equally, and eye is for concentrating positioning service, and under ore deposit, tunnel and face are cycle positioning service or roll-call positioning service.

Wherein, in the present embodiment, AP is realized mobile terminal is sent to the Location Request of concentrating Location Request or cycle location by broadcast beacon frame.

Particularly, the present invention is synchronously divided into visible ray and radio channel the superframe structure of regular length, as shown in Figure 5, superframe structure is divided into two parts, Part I is that beacon frame sends the phase, and Part II is locator data transmission period, is divided into a series of isometric time slots.A superframe duration is the basic sequential unit communicating by letter under ore deposit.

AP is by periodically sending downlink broadcast frame (being beacon frame) in radio channel, realize the synchronous of photoelectricity channel, the structure of beacon frame please as shown in Figure 6, comprise frame control sequence, duration, BSSID (Basic Service Set Identifier, BSSID), synchronizing sequence, reporting types and FCS.Frame control, duration and BSSID form mac frame head jointly, and remainder (except FCS) is frame part, wherein:

Duration field: shown that superframe data send the duration of phase.

BSSID field: shown the network address at AP place, center, the network address of each AP is unique.

Reporting types field: the frame that is beacon frame, show to upload type for the different positioning services that under ore deposit, different scenes adopt, AP carries the beacon frame of reporting types by the each mobile terminal broadcast in its radio signal coverage, notify the type of each mobile terminal positioning service, the reporting types of carrying in beacon frame and the corresponding relation of scene are specifically shown in Table 1:

Table 1

Reporting types	Be suitable for scene
		Concentrate location	Mine entrance
Cycle location	Tunnel and face under ore deposit

FCS field: be Frame Check Sequence, all frames have this field.

Wherein, frame control, duration, BSSID, synchronizing sequence, reporting types and FCS field take respectively 2,2,6,2,2,4 bytes.

S402: each mobile terminal, in the time receiving the Location Request that comprises positioning service type of described AP transmission, is carried out the one in following operation according to different positioning service types correspondences: send locating information with wireless system or line-of-sight propagation to described AP; Or send locating information with wireless system to described AP and send request, and send request after processed and send locating information with line-of-sight propagation to described AP in described locating information.

S403: described AP, in the time that the locating information that receives mobile terminal sends request, processes described locating information and sends request; In the time receiving the locating information of mobile terminal with wireless system, report described locating information; In the time receiving the locating information of mobile terminal with visible light communication form, in described locating information, add corresponding described the second identification information, and report the locating information of adding after the second identification information.

Wherein, in above-mentioned steps S402, the one according in the following operation of the corresponding execution of different positioning service types: send locating information to described AP; Or send locating information with wireless mode to described AP and send request, and send request after processed and send locating information with line-of-sight propagation to described AP in described locating information, specifically comprise:

In above-mentioned steps S403, described AP processes described locating information and sends request in the time that the locating information that receives mobile terminal sends request, and specifically comprises: described AP sends confirmation to described mobile terminal; Described AP accesses described mobile terminal according to the 3rd identification information of described mobile terminal in the mode of poll.

Particularly, mobile terminal receives after the beacon frame of AP broadcast, resolves beacon frame, analyzes positioning service type wherein, follow-uply uploads locating information with corresponding service type.

The present embodiment definition identity ID frame, mobile terminal is realized uploading of locating information by send identity ID frame to AP, refer to Fig. 7, Fig. 7 shows the frame structure of the identity ID frame that miner's mobile terminal sends, and identity ID frame comprises frame control sequence, BSSID field, id field and FCS.Wherein:

BSSID: be the address of center AP, mobile terminal obtains by the beacon frame of resolving AP broadcast, is also the destination address that mobile terminal is uploaded identity ID frame;

ID: be miner's identity id information, follow-up back end processing module can obtain miner's definite positional information by resolving miner identity ID and PD short address.

Learn that by resolving beacon frame reporting types is to concentrate when location when mobile terminal, select at random the time slot in visible ray during current superframe data or radio channel to upload self ID frame, realize uploading of locating information.

In the time that mobile terminal received beacon frame is determined employing cycle positioning service type, send RTS(request to send in radio channel to AP, request sends) frame request adds snoop queue, AP adds backward this mobile terminal of snoop queue to reply CTS(clear to send the ID of this mobile terminal, confirm to send) frame informs, then AP utilizes all Termination ID in snoop queue to generate poll-beacon frame, for the mobile terminal in its coverage of poll.

Particularly, for cycle positioning service, the feature that the present embodiment periodically sends by beacon frame, add poll field by the frame part at beacon frame and define a kind of beacon frame with poll, be poll-beacon frame (Poll-Beacon), as shown in Figure 8, poll field comprises two son fields: Termination ID sequence and time.Wherein:

Termination ID sequence: mark the ID of all terminals that need poll, if n is the terminal number that needs poll, the byte length of this sequence is 2 × n;

Time: represent the slot length that each terminal is assigned with.

Based on the poll-beacon frame of the present embodiment definition, in cycle positioning service, in first broadcast cycle, AP is empty poll-beacon frame to each miner's terminal broadcast poll field, each miner's terminal is received after this poll-beacon frame, adopt RTS/CTS handshake mechanism, in radio channel, to AP competition sending permission, wouldn't send data after competing successfully.Particularly, terminal sends RTS with wireless system to AP, AP replys CTS frame to miner's terminal afterwards, and the Termination ID that sends RTS is added to transmit queue table, safeguard this transmit queue table simultaneously, Termination ID in queue table is added to the poll field of poll-beacon frame, generate new poll-beacon frame, by the miner's terminal in new its coverage of poll-beacon frame poll, afterwards, miner's terminal is uploaded self ID frame at visible ray channel to AP successively, until an end of polling(EOP), first locating periodically of execution cycle positioning service.

After periodic polls in, in poll-beacon frame, the content of poll field can be upgraded according to the actual conditions of terminal.If after cycle polling three times (concrete number of times can carry out different set by technical staff), certain miner's terminal sends failure always, and this terminal may be away from the coverage of current AP, now, this Termination ID is shifted out snoop queue by AP, and broadcast the poll-beacon frame after upgrading.

The update status of poll-beacon frame has two kinds: have new terminal to add transmit queue or certain terminal away from AP coverage.At poll-beacon frame, not more under news, AP only need send current poll-beacon frame, and its " reporting service " field is " cycle positioning service ", and terminal is carried out poll according to the polling sequence of a upper poll-beacon frame to terminal.If terminal transmit queue table has renewal, the cycle of uploading accordingly also has certain change.

In cycle positioning service, because terminal periodic is uploaded identity ID frame, therefore needn't upload success or not to terminal and confirm.

In the time that there is roll-call demand in control centre to miner, in tunnel or face scene, need to call the roll location to miner time, AP adopts radio channel target miner to be sent to the roll-call frame that has higher priority (compared to cycle positioning service), miner replys self ID frame after receiving roll-call frame on wireless channel, AP feeding back ACK (Acknowledgement, acknowledge character) acknowledgement frame acknowledges receipt of, and completes roll-call.Because roll-call positioning service occurs in radio channel, therefore can not exert an influence to ongoing cycle positioning service on visible ray channel.

So far, AP can receive three kinds of locating information under positioning service.Concentrate in positioning service, AP by two kinds of communication links respectively by the locating information of wireless base station and each PD receiving terminal, under cycle positioning service, AP receives locating information by the each PD of visible ray chain route, and in roll-call positioning service, AP is by radio link route wireless base station receiving terminal locating information.Wireless base station receives after terminal location information, locating information is not processed, and directly locating information is sent to back end processing module 300; Each PD receives after locating information, and its PD short address is added into locating information, and uploads the locating information that comprises PD short address to back end processing module 300.

Wherein, wireless base station and each PD adopt TDMA technology that the data that receive are reported.

When concrete enforcement, AP receives and the function of reported data can realize in physical layer.Physical layer comprises two-layer: PMD(physical medium dependent, physical medium relies on sublayer) and PLCP(physical layer convergence procedure, physical layer convergence procedure sublayer).AP receives locating information at pmd layer, adds PD short address to giving the correct time on PLCP layer.

S404: the locating information that described back end processing module reports described AP is analyzed and processed, the first identification information, the second identification information, the 3rd identification information in the described locating information of foundation obtains the positional information of described each mobile terminal.

Wherein, this step comprises:

If described locating information is the information that described AP obtains with wireless system, described back end processing module utilizes the first identification information and the 3rd identification information in described locating information to position corresponding destination object;

If described locating information is the information that described AP obtains with line-of-sight propagation, described back end processing module utilizes the second identification information and the 3rd identification information in described locating information to position corresponding destination object.

Particularly, back end processing module 300 receives the locating information that wireless base station and each PD upload.The locating information of uploading for wireless base station, back end processing module 300 extracts the network address and the Termination ID of wireless base station from this locating information, according to the network address and Termination ID in GIS(Geografic Information System, GIS-Geographic Information System) identify miner position on map; The locating information of uploading for each PD, back end processing module 300 extracts PD short address and Termination ID from this locating information, identifies miner position according to PD short address and Termination ID on GIS map, completes the location to miner.

Visible, the present invention, by adopting visible ray and radio communication mode to work in coordination with the transfer of data of positioning service, has effectively overcome the adverse effect that while only relying on single communication mode, channel circumstance brings.Meanwhile, the message transmission rate of visible ray mode, far away higher than the message transmission rate of the wireless system based on RFID technology or Wi-Fi technology, has met the big data quantity of communicating by letter under ore deposit, the requirement of two-forty.

Embodiment seven

The embodiment of the present invention seven continues the mobile terminal locating method in embodiment six to be optimized.Be in the present embodiment, for concentrated positioning service, also comprise the steps: that described AP sends information to described mobile terminal in the time that described mobile terminal sends the locating information failure of concentrating positioning service to described AP; Described mobile terminal sends to AP the locating information of concentrating positioning service again.

In the time that personnel enter mine, need to carry out personal information statistics at mine entrance, now need each miner personnel to carry out concentrated positioning service, in reality scene, tend to exist the problem that miner personnel number is large, leak source rate is higher.For this kind of situation, the present embodiment is pointed out by the miner's terminal to data upload failure, and again uploads himself ID frame by terminal and reduce leak source rate.

Particularly, the feature that the present embodiment periodically sends by beacon frame, add confirmation field by the frame part at beacon frame and carry out definition set confirmation-beacon frame (BA-Beacon), utilize this to concentrate confirmation-beacon frame to realize the terminal of data upload failure is confirmed.As shown in Figure 9, confirm that field comprises two son fields: Termination ID sequence and confirmation bitmap, wherein:

Termination ID sequence: the ID that shows the terminal that needs feedback acknowledgment frame, the present embodiment is the terminal feedback acknowledgement frame to data transmission fails only, and m represents the terminal number of data transmission fails, correspondingly, 2 × m is the shared byte number of this Termination ID sequence, and each ID takies 2 bytes;

Confirm bitmap: can represent and send successfully, send unsuccessfully respectively by 1,0, the present embodiment only adopts the Termination ID of 0 pair of data transmission fails to confirm.

Based on the concentrated confirmation-beacon frame of the present embodiment definition, concentrate in positioning service, in first broadcast cycle, AP is empty concentrated confirmation-beacon frame to each miner's terminal broadcast acknowledgements field, each miner's terminal is received after this concentrated confirmation-beacon frame, time slot during the current superframe data of random selection in visible ray or radio channel is uploaded self ID frame, afterwards, AP upgrades according to the situation of uploading of terminal the content of concentrating confirmation-beacon frame, the Termination ID of data transmission fails is concentrated and is added in concentrated confirmation-beacon frame really in the section of reading, and the concentrated confirmation-beacon of broadcasting after upgrading is concentrated confirmation to sending failed terminal, send failed terminal and retransmit its ID frame at next superframe.After repeatedly again transmitting, each miner concentrates and locates successfully, greatly reduces leak source rate.

Wherein, the initial superframe number of time slots of AP can be definite according to the total number of terminal, and the present embodiment is set superframe number of time slots and approximated total number of terminals, and in retransmission process, superframe number of time slots is constant.For example, the number of supposing to enter mine mouth is 10000, and respective settings number of time slots is 10000, adopts said process to call the roll successfully through verifying all miners personnel of realizing after 5 secondary data are retransmitted, and leak source rate is less than 1/10000, can in 2s, all complete.

Herein, it should be noted that, in the time that terminal is carried out to validation of information, be not limited to the only terminal to bust this and concentrate confirmation, also can all confirm all terminals, specifically can be respectively with 1 in confirmation bitmap, 0 representative sends successfully and sends unsuccessfully, follow-up terminal receives after the concentrated confirmation-beacon frame of AP broadcast according to confirming in field, whether corresponding positions diagram data knows transmission success, if bust this is transmission again, certainly, generally, for avoiding concentrating confirmation-beacon frame length long, preferential employing only confirms to send failed terminal.

Embodiment eight

The present embodiment eight continues the disclosed mobile terminal locating method of above embodiment to expand.Be that said method also comprises:

In the time that described AP receives the alert service data of mobile terminal, send to the each mobile terminal in its wireless signal coverage the request of control, stop sending other the each business information except alert service to control described each mobile terminal; Back end processing module receives the alert service data that report of AP, according to the processing of reporting to the police of described alert service data.

Circumstance complication under ore deposit, tunnel or face place under ore deposit, if the situation sudden changes such as humiture, gas need exigency report critical information, need burst to upload Termination ID information and the warning message under critical environment.For this kind of situation, the present embodiment adds burst warning positioning service.

In such cases, needing to obtain fast warning message uploads chance and in time warning message is processed, and under ore deposit tunnel or face place, may generating period positioning service, the multiple positioning service such as roll-call positioning service, for avoid the conflict of multiple business as far as possible, the present embodiment is predetermined the priority level of each business according to the significance level of each business: burst warning positioning service priority is the highest, roll-call positioning service is taken second place, cycle positioning service priority is minimum.

The face of mine etc. is located environmental condition complexity, and because the factors such as turning cause wireless link not smooth, and the situation that flue dust overrich or part place optical link are blocked is very common, and therefore radio link and visible ray link all can not ensure unimpeded at any time.Thereby in the time that emergency occurs, for ensureing rapidity and the validity of communication, miner should send id information and warning message at two kinds of channels simultaneously, and AP receives that other data of rear time-out send and reply ACK frame, complete warning and the personnel positioning of emergency situations under ore deposit.

Particularly, for burst warning positioning service, the present embodiment, by add alert field in Termination ID frame, forms warning ID frame.Thereby, in the time having burst warning positioning service demand, terminal adopts visible ray and radio channel to send warning ID frame simultaneously, AP receives after the warning ID frame of terminal, broadcast a control frame, require all terminals to stop sending other business, to allow the terminal in critical place to carry out alarm communication or other dispatching communications.

If visible ray channel surprisingly disconnects, warning positioning service data can successfully send on wireless channel; If radio channel surprisingly disconnects, under ore deposit, periodically positioning service can not be guaranteed (poll-beacon frame that terminal cannot receive AP broadcast), and now, visible ray channel idle, can a burst warning positioning service for terminal.

Because uploading of burst warning positioning service data is paroxysmal, do not prenotice, point out, therefore, although this service priority is higher, the control frame of AP just issues after warning ID frame sends successfully, and while being intended to ensure follow-up warning processing, communication link is unimpeded, therefore, upload moment at warning ID frame, the conflict of different business likely occurs, the present embodiment adopts the avoidance mechanism based on terminal to solve the problem of service conflict.

This avoidance mechanism is specific as follows:

The warning ID frame of reporting to the police for burst sends with the ID frame of the location of calling the roll the situation of conflicting that produces in radio channel, set timer Timer, if the terminal of burst warning positioning service is sent the stand-by period and exceedes the ACK acknowledgement frame of not receiving AP after Timer, retransmit immediately warning ID frame, roll-call positioning service is kept out of the way certain hour and is retransmitted after burst warning finishes;

In the time that the warning ID frame of burst warning positioning service conflicts on visible ray channel with the ID frame of cycle positioning service, represent wireless channel conditions good (cycle location need to receive poll-beacon frame that radio channel sends), now, warning positioning service can not send successfully on optical channel, and can send successfully in radio channel; If radio channel surprisingly disconnects, under cycle positioning service, terminal cannot be obtained poll-beacon frame of AP so, and therefore cycle positioning service can not be guaranteed, visible ray channel idle, and now, warning positioning service can successfully send by visible ray channel.

Embodiment nine

The open the inventive method application example in scene under ore deposit of the present embodiment nine.

Consider the complexity of environment under ore deposit, the layout density of wireless base station is every 100 meters and lays one, and turning round and tunnel crossing lays respectively wireless base station.Wireless base station is specifically laid in top, tunnel, each tunnel and face ensure at least one wireless base station, the packing density that visible ray receives PD is every 10 meters one, specifically can lay by lighting apparatus under ore deposit and power line, thereby the terminal precision of locating by visible ray channel is 5 meters (being about a half-distance of packing density).

Below for the different business requirement description workflow of the present invention of different scenes under ore deposit:

1) mine mouth personnel concentrate and call the roll

In advance the superframe timeslot number of mine mouth AP is set as into ore deposit total number of persons, in concentrated roll-call process, superframe length is constant.Taking miner's number 10000 as example, the number of time slots of respective settings superframe is 10000.

Refer to Figure 10, utilize the present invention to realize mine mouth personnel and concentrate the process of calling the roll as follows:

S1001: when each miner enters mine entrance, AP sends and concentrates confirmation-beacon frame (confirming that field is empty) to each miner's terminal, requires all miners to upload its identity ID frame;

S1002: each miner's terminal recognition is concentrated positioning service type;

S1003: after identification services type, each terminal is selected a time slot at superframe data transfer period, uploads the identity ID frame of oneself at random at visible ray channel or radio channel;

S1004:AP adopts the concentrated confirmation-beacon frame (BA-Beacon) after upgrading to concentrate feedback to send failed terminal, and starts next superframe;

S1005: send failed terminal, again select at random a time slot to send its ID frame in next superframe.

The like, if send in addition failed terminal, repeat above step, call the roll until complete to concentrate.

Refer to Figure 11, Figure 11 shows the channel usage of photoelectricity hybrid network in above-mentioned concentrated roll-call positioning flow.

2) periodically location of tunnel or face

Refer to Figure 12, utilize the process of property performance period of the present invention location as follows:

S1201: miner enters tunnel, when entering a wireless base station and several visible ray and receiving in the AP coverage of PD node composition, AP sends poll-beacon frame (poll field is empty) to miner's terminal, require terminal periodic and upload its identity ID frame, so that control centre's unified management is grasped miner dynamic;

S1202: terminal adopts the RTS/CTS handshake mechanism of similar 802.11DCF, competes sending permission in radio channel, wouldn't send data after competing successfully;

The Termination ID that obtains sending permission is added transmit queue table by S1203:AP, safeguards transmit queue table, and the Termination ID in queue table is added to the poll field of next poll-beacon frame;

S1204:AP is to each terminal broadcast poll-beacon frame;

S1205: terminal sends self poisoning ID frame successively after receiving, the confirmation whether AP needn't receive terminal.

So far, the super frame period that cycle positioning service is uploaded finishes, and afterwards, repeats AP and send poll-beacon frame and terminal and upload the process of identity ID frame, if transmit queue table does not change, to maintain the content of poll field in poll-beacon frame constant.In the time having new Termination ID to add to send to list and certain terminal away from AP coverage, upgrade the poll field in poll-beacon frame, and broadcast new poll-beacon frame.

The cycle that AP poll and terminal positioning business are uploaded i.e. a super frame period, if terminal transmit queue table has renewal, the cycle of uploading accordingly also has certain change.

Refer to Figure 13, Figure 13 is two kinds of channels service condition in locator data upload procedure in cycle positioning service.

3) tunnel or face not timing point ring service

If control centre needs not timing to certain miner location of calling the roll, AP has QoS(Quality of Service, service quality to its transmission) the roll-call frame that ensures, miner is in the radio channel last time of corresponding locator data again immediately.During the period, visible ray channel can be proceeded cycle positioning service, and as shown in Figure 14 dotted line circle, two kinds of business can not be conflicted.

4) under ore deposit, burst is reported to the police

When under ore deposit, emergency situation occurring, while needing exigency report, miner sends emergency alarm and location ID frame at two kinds of channels simultaneously, and AP receives the transmission of rear other business datums of time-out and replys ACK frame to miner.Complete warning and the personnel positioning of emergency situations under ore deposit.

The locator data that control centre is responsible for AP in each positioning service to receive is processed, and realizes miner's terminal is positioned.

In the present invention, the positioning precision of utilizing radio channel to send locator data depends on the layout density of AP under ore deposit, and with respect to PD, the layout density of AP is less, therefore compared with positioning precision based on visible ray channel, the positioning precision based on radio channel is lower.For this kind of situation, the present invention can also adopt fingerprint recognition location algorithm to position to the terminal based on radio transmitting data.Specific implementation flow process is as follows: a, training stage: ground-based server (can be used as back end processing module) is carried out signal strength test to all under ore deposit with reference to training points, sets up the signal strength data storehouse of all reference points; B, positioning stage: terminal sends location ID frame by wireless channel, to realize the signal strength signal intensity of measuring terminals to specific base (wireless base station of AP), ground-based server is identified location algorithm according to received signals fingerprint, the database that the signal strength signal intensity of measurement and training stage are set up mates, draw the position of this terminal, realize location.

In sum, the present invention has following advantage: adopt visible ray and two kinds of channels of radio to work in coordination with the transmission of positioning service under ore deposit, effectively overcome the impact of channel circumstance while only relying on radio communication; Visible light communication can be realized the transmission rate of average 500M at present, and radio channel actual transfer rate is very low, for this feature, the present invention utilizes radio channel transmission control frame, utilize visible ray channel to send Frame, can realize multiple terminals high-speed access network network, and fully improve the stability of transmission rate, network utilisation efficiency and the system of data; The present invention can realize information passback by lighting apparatus under ore deposit and power line, and laying is convenient, cost is low, positioning precision is high; And the present invention is directed to different location requirement, designed respectively different network insertion mechanism, met the positioning service demand under various scenes.

It should be noted that, each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.

For convenience of description, while describing above device, being divided into various unit with function describes respectively.Certainly, in the time implementing the application, the function of each unit can be realized in same or multiple software and/or hardware.

As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the application can add essential general hardware platform by software and realizes.Based on such understanding, the part that the application's technical scheme contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out the method described in some part of each embodiment of the application or embodiment.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. a wireless access points AP, is characterized in that, the first identification information that described AP is corresponding unique, and described AP comprises the first radio receiving transmitting module and visible ray receiver module, wherein:

2. AP according to claim 1, it is characterized in that, described positioning service type comprises concentrated positioning service, cycle positioning service and roll-call positioning service, wherein, described concentrated positioning service is the scene in mine entrance corresponding to destination object, the scene of the corresponding destination object of described cycle positioning service and described roll-call positioning service tunnel and face under ore deposit.

3. AP according to claim 1, it is characterized in that, described the first radio receiving transmitting module also for: in the time that described the first radio receiving transmitting module or described visible ray receiver module receive the alert service data of destination object, send to the each destination object in described radio signal coverage the request of control, stop sending other the each business information except alert service to control described each destination object;

4. a mobile terminal, is characterized in that, the 3rd identification information that described mobile terminal is corresponding unique, and described mobile terminal comprises the second radio receiving transmitting module and visible ray sending module, wherein:

5. mobile terminal according to claim 4, is characterized in that, described the second radio receiving transmitting module is also for sending alert service data with wireless system, and described visible ray sending module is also for sending alert service data with line-of-sight propagation.

6. a mobile terminal location system, it is characterized in that, comprise AP and N the mobile terminal as described in claim 4-5 any one as described in claim 1-3 any one, described AP intercoms mutually with described mobile terminal, described N is greater than 1 natural number, and described navigation system also comprises:

7. a mobile terminal locating method, based on navigation system as claimed in claim 6, is characterized in that, comprising:

8. method according to claim 7, is characterized in that, the corresponding one of carrying out in following operation of the different positioning service types of described foundation: send locating information to described AP; Or send locating information with wireless mode to described AP and send request, and send request after processed and send locating information with line-of-sight propagation to described AP in described locating information, specifically comprise:

9. the method described in any one according to Claim 8, is characterized in that, described AP processes described locating information and sends request in the time that the locating information that receives mobile terminal sends request, and specifically comprises:

Described AP sends confirmation to described mobile terminal;

10. method according to claim 7, it is characterized in that, the locating information that described back end processing module reports described AP is analyzed and is processed, the positional information of obtaining described each mobile terminal according to the first identification information, the second identification information, the 3rd identification information in described locating information, specifically comprises:

11. methods according to claim 8, is characterized in that, also comprise:

12. methods according to claim 8, is characterized in that, also comprise:

13. methods according to claim 12, is characterized in that, also comprise:

14. methods according to claim 7, is characterized in that, also comprise: