CN102724754A - Wireless positioning method and base station - Google Patents

Wireless positioning method and base station Download PDF

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CN102724754A
CN102724754A CN2012101960818A CN201210196081A CN102724754A CN 102724754 A CN102724754 A CN 102724754A CN 2012101960818 A CN2012101960818 A CN 2012101960818A CN 201210196081 A CN201210196081 A CN 201210196081A CN 102724754 A CN102724754 A CN 102724754A
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navigation message
base station
framing signal
signal
terminal
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CN102724754B (en
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邓中亮
余彦培
袁协
王佳
尹会明
曹佳雯
吕子平
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BEIJING SHOUKE SOFTWARE AND SYSTEM INTEGRATION Co Ltd
Beijing University of Posts and Telecommunications
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BEIJING SHOUKE SOFTWARE AND SYSTEM INTEGRATION Co Ltd
Beijing University of Posts and Telecommunications
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Abstract

The invention discloses a wireless positioning method and a base station and belongs to the technical field of positioning. The wireless positioning method includes that the base station acquires navigation messages comprising positioning information, generates positioning signals with the navigation messages and transmits the positioning signals to a terminal so that the terminal can acquire the navigation messages in the positioning signals and realize positioning according to the positioning information in the navigation messages. The base station acquires the navigation messages comprising the positioning information and transmits the positioning signals with the navigation messages to the terminal, and accordingly, the terminal can automatic position according to the positioning information in the navigation messages, and further, computing load of servers can be reduced. Additionally, compared with the method of positioning in the OFDM (orthogonal frequency division multiplexing) modulation manner, the wireless positioning method can improve positioning accuracy and reduce positioning complexity.

Description

Wireless location method and base station
Technical field
The present invention relates to field of locating technology, particularly a kind of wireless location method and base station.
Background technology
Along with development of Communication Technique, the range of application of wireless location is more and more wider.Combine with various wireless signals, the pilot signal as in Chirp signal, Zigbee (purple honeybee) signal, UWB (Ultra Wideband, ultra broadband) signal and the communication system makes wireless location can be applied to different field, enriches people's life.How to improve the precision of wireless location, let its better services be emphasis of wireless location research in masses.
In the existing wireless location mode, to OFDM (Orthogonal Frequency Division Multiplexing, OFDM) system design PRS (Positioning Reference Signals; Location reference signals), is used for the configuration of downlink wireless frame, through utilizing this PRS as known signal; Separate the signal correction operation; Obtain a plurality of time delays that reach the base station, information desk is returned in positional parameter (time delay) request, realize the location by information desk.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art:
Because existing wireless location mode need be returned information desk with positional parameter; Positioned by information desk, and the terminal can't autonomous positioning, amount of calculation is entirely in information desk one side; Cause information desk to be difficult to support the parallel location of mass user, the real-time statistics customer position information is difficulty comparatively; In addition, locating information passback real-time performance is difficult to guarantee, causes many filtering algorithm effects to be difficult to arrive optimum state, influences positioning accuracy, and adopts the OFDM modulating mode, and distance measuring method is complicated.
Summary of the invention
In order to make the terminal can autonomous positioning the time, improve positioning accuracy, reduce the computation burden of location complexity and information desk, the embodiment of the invention provides a kind of wireless location method and base station.Said technical scheme is following:
On the one hand, a kind of wireless location method is provided, said method comprises:
The base station obtains navigation message, comprises locating information in the said navigation message;
The framing signal of said navigation message is carried in generation, and said framing signal is sent to the terminal, makes said terminal obtain the navigation message in the said framing signal, to position according to the locating information in the navigation message.
Wherein, said locating information comprises at least: the elevation information and the atmospheric pressure value at place, said base station, and/or time synchronization error update information;
Said base station obtains navigation message, specifically comprises:
Air pressure, temperature through baroceptor base stations detected place; And/or the synchronous update information of clock acquisition time through base station place; With air pressure, the temperature at place, detected said base station, and/or the time synchronized update information carries out the text framing, obtains navigation message.
Further, the framing signal of said navigation message is carried in said generation, specifically comprises:
Generate the required spreading code in location, and utilize said spreading code that said navigation message is carried out spread spectrum, obtain carrying the frequency expansion sequence of said navigation message, with said frequency expansion sequence as framing signal.
Further, when the framing signal of said navigation message is carried in said generation, also comprise:
Produce pilot signal, and control according to the time that the time that produces said pilot signal is carried the framing signal of said navigation message to generation, form between the code phase that makes said framing signal and the said pilot signal and preset corresponding relation;
Said said framing signal is sent to the terminal, specifically comprises:
Said framing signal is carried out power control, make the amplitude of said framing signal be lower than the amplitude of said pilot signal;
Framing signal and the said pilot signal that to carry out after power is controlled superpose; And the signal after will superposeing sends to the terminal; Obtain the navigation message that carries in the framing signal by said terminal according to the code phase of said framing signal and the preset corresponding relation between the said pilot signal, to position according to said navigation message.
Further, said said framing signal is sent to the terminal, specifically comprises:
Adopt the frequency different that said framing signal is sent to the terminal with adjacent base station.
On the other hand, a kind of base station is provided also, said base station comprises:
Acquisition module is used to obtain navigation message, comprises locating information in the said navigation message;
First generation module is used to produce the framing signal of carrying the navigation message that said acquisition module gets access to;
Sending module is used for the framing signal that said first generation module produces is sent to the terminal, makes said terminal obtain the navigation message in the said framing signal, to position according to the locating information in the navigation message.
Wherein, the locating information that comprises in the navigation message that said acquisition module gets access to comprises at least: the elevation information and the atmospheric pressure value at place, said base station, and/or time synchronization error update information;
Said acquisition module; Specifically be used for air pressure, temperature through baroceptor base stations detected place; And/or the synchronous update information of clock acquisition time through base station place; With air pressure, the temperature at place, detected said base station, and/or the time synchronized update information carries out the text framing, obtains navigation message.
Further, said first generation module specifically is used to generate the required spreading code in location, and utilizes said spreading code that said navigation message is carried out spread spectrum, obtains carrying the frequency expansion sequence of said navigation message, with said frequency expansion sequence as framing signal.
Further, said base station also comprises:
Second generation module is used to produce pilot signal;
Control module; The time that is used for producing according to said second generation module pilot signal was controlled the time that said first generation module produces the framing signal of carrying said navigation message, formed between the pilot signal that the code phase that makes the framing signal that said first generation module produces and said second generation module produce and preset corresponding relation;
Said sending module specifically comprises:
Control unit is used for said framing signal is carried out power control, makes the amplitude of said framing signal be lower than the amplitude of said pilot signal;
Superpositing unit is used for framing signal and said pilot signal that said control unit carries out after power is controlled are superposeed;
Transmitting element; Be used for the signal after the said superpositing unit stack is sent to the terminal; Obtain the navigation message that carries in the framing signal by said terminal according to the code phase of said framing signal and the preset corresponding relation between the said pilot signal, to position according to said navigation message.
Further, said sending module specifically is used to adopt the frequency different with adjacent base station that said framing signal is sent to the terminal.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is:
The method that present embodiment provides; Obtain the navigation message that comprises locating information through the base station; And this navigation message is carried at sends to the terminal in the framing signal, make the terminal can autonomous positioning, and then reduce the computation burden of information desk according to the locating information in the navigation message; In addition, compare with adopting OFDM modulating mode realization location, the method that present embodiment provides can improve positioning accuracy, reduces the location complexity.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of wireless location method flow chart that the embodiment of the invention one provides;
Fig. 2 is a kind of wireless location method flow chart that the embodiment of the invention two provides;
Fig. 3 is the structural representation of a kind of base station of providing of the embodiment of the invention three;
Fig. 4 is the structural representation of the another kind of base station that provides of the embodiment of the invention three;
Fig. 5 is the structural representation of a kind of sending module of providing of the embodiment of the invention three.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
Embodiment one
Present embodiment provides a kind of wireless location method; This method is through improving LTE (Long Term Evolution; Long Term Evolution) signal system makes the base station have the function of sending the framing signal of carrying navigation message, realizes that the terminal is according to the navigation message autonomous positioning.Referring to Fig. 1, the method flow that present embodiment provides is specific as follows:
101: the base station obtains navigation message, comprises locating information in this navigation message, and this locating information comprises the elevation information and the atmospheric pressure value at place, base station at least, and/or the time synchronization error update information;
Wherein, the base station obtains navigation message, specifically comprises:
Through air pressure, the temperature at baroceptor base stations detected place, and/or the synchronous update information of clock acquisition time through base station place, with air pressure, the temperature at place, detected base station, and/or the time synchronized update information carries out the text framing, obtains navigation message.
102: produce the framing signal of carrying navigation message;
The framing signal of navigation message is carried in generation, specifically comprises:
Generate the required spreading code in location, and utilize spreading code that navigation message is carried out spread spectrum, obtain carrying the frequency expansion sequence of navigation message, with frequency expansion sequence as framing signal.
Further, produce when carrying the framing signal of navigation message, also comprise:
Produce pilot signal, and control according to the time that the time that produces pilot signal is carried the framing signal of navigation message to generation, make between code phase and the pilot signal of framing signal and form preset corresponding relation.
103: framing signal is sent to the terminal, make the terminal obtain the navigation message in the framing signal, to position according to the locating information in the navigation message.
Wherein, framing signal is sent to the terminal, specifically comprises:
Framing signal is carried out power control, make the amplitude of framing signal be lower than the amplitude of pilot signal;
Framing signal and the pilot signal that to carry out after power is controlled superpose; And the signal after will superposeing sends to the terminal; Obtain the navigation message that carries in the framing signal by the terminal according to the code phase of framing signal and the preset corresponding relation between the pilot signal, to position according to navigation message.
Further, framing signal is sent to the terminal, specifically comprises:
Adopt the frequency different that framing signal is sent to the terminal with adjacent base station.
The method that present embodiment provides; Obtain the navigation message that comprises locating information through the base station; And this navigation message is carried at sends to the terminal in the framing signal, make the terminal can autonomous positioning, and then reduce the computation burden of information desk according to the locating information in the navigation message; In addition, compare with adopting OFDM modulating mode realization location, the method that present embodiment provides can improve positioning accuracy, reduces the location complexity.
In order more clearly to set forth the wireless location method that the foregoing description provides, in conjunction with foregoing, be example with following embodiment two, wireless location method is carried out detailed explanation, see following embodiment two for details:
Embodiment two
Present embodiment provides a kind of wireless location method, and the content that this method combines the foregoing description one to provide through improving LTE signal system, under the prerequisite that guarantees positioning accuracy, makes the terminal realize autonomous positioning.For the ease of explanation, present embodiment is CDMA (Code Division Multiple Access, code division multiple access) frequency expansion sequence with the framing signal, and pilot signal is that PRS is an example, and wireless location method is illustrated.Referring to Fig. 2, the method flow that present embodiment provides is specific as follows:
201: the base station obtains navigation message, comprises locating information in this navigation message, and this locating information comprises the elevation information and the atmospheric pressure value at place, base station at least, and/or the time synchronization error update information;
Wherein, When the base station obtains navigation message; Concrete air pressure, temperature through baroceptor base stations detected place, and/or pass through the synchronous update information of clock acquisition time that the base station is located, with air pressure, the temperature at place, detected base station; And/or the time synchronized update information carries out the text framing, obtains navigation message.
Present embodiment does not limit the mode that the base station obtains navigation message; Navigation message is except that comprising above-mentioned locating information; Can also comprise information such as Base Station Identification, base station position information and CRC (Cyclic Redundancy Check, CRC) check digit; Certainly, except foregoing, navigation message can also comprise other guide, and present embodiment does not limit the particular content of navigation message.
202: the base station produces the CDMA frequency expansion sequence that carries navigation message, and produces PRS, and CDMA frequency expansion sequence and PRS are sent to the terminal;
To this step, the base station produces the mode of the CDMA frequency expansion sequence that carries navigation message, specifically includes but not limited to following mode:
Generate the required spreading code in location, and utilize spreading code that the navigation message that obtains is carried out spread spectrum, obtain carrying the frequency expansion sequence of navigation message, this frequency expansion sequence can be used as framing signal.During practical implementation, can be at every navigation message that in the frequency expansion sequence of Preset Time, carries preset size, for example; Whenever in 10 milliseconds frequency expansion sequence, carrying 1bit (bit) navigation message; Certainly, except Preset Time being set at 10 milliseconds, will presetting size and be set at outside the 1bit; Preset Time and preset size can also be taked other values, and present embodiment does not limit Preset Time and preset size.When the CDMA frequency expansion sequence of navigation message was carried in generation in the base station, the method that present embodiment provides also comprised:
Produce pilot signal, and control according to the time that the time that produces pilot signal is carried the framing signal of navigation message to generation, make between code phase and the pilot signal of framing signal and form preset corresponding relation;
Correspondingly, framing signal is sent to the terminal, specifically comprises:
Framing signal is carried out power control, make the amplitude of framing signal be lower than the amplitude of pilot signal;
Framing signal and the pilot signal that to carry out after power is controlled superpose; And the signal after will superposeing sends to the terminal; Obtain the navigation message that carries in the framing signal by the terminal according to the code phase of framing signal and the preset corresponding relation between the pilot signal, to position according to navigation message.
Wherein, the base station produces the mode of PRS, specifically can realize that present embodiment is not done concrete qualification to this according to existing implementation.Why CDMA frequency expansion sequence and PRS are sent to the terminal in the lump; Be in order to make the terminal behind the CDMA frequency expansion sequence and PRS that subsequent step receives; Can obtain navigation message according to the preset corresponding relation that has between the code phase of CDMA frequency expansion sequence and the PRS, realize the location according to the locating information in the navigation message.About the preset corresponding relation that has between the code phase of CDMA frequency expansion sequence and the PRS, for example, can head aligns or tail aligns for carry out with PRS the first place of CDMA frequency expansion sequence.Certainly, except preset corresponding relations such as head alignment or tail alignment, can also adopt other corresponding relations, present embodiment is not done concrete qualification to this.
Because the method that present embodiment provides has been carried out power control to framing signal; Make the amplitude of framing signal be lower than the amplitude of pilot signal; Therefore, CDMA frequency expansion sequence energy is low, for example; Be lower than ofdm signal 18dB (decibel), thereby do not influence the proper communication of the ofdm signal that comprises the PRS signal.And the PRS sequence is produced by pseudo random sequence c (i), is designated as
Figure BDA00001761892500061
and is expressed as:
r l , n s ( m ) = 1 2 ( 1 - 2 · c ( 2 m ) ) + j 1 2 ( 1 - 2 · c ( 2 m + 1 ) ) , m = 0,1 , . . . , 2 N RB max , DL - 1
Wherein, l is an OFDM symbol sequence number in the time slot, n sBe the timeslot number of downlink wireless frame,
Figure BDA00001761892500063
It is the maximum Physical Resource Block number of down link.Before each subframe began, PN (Pseudo_Noise, pseudorandom) sequence generator all need carry out initialization, and initializing expression is:
c init = 2 10 · ( 7 · ( n s + 1 ) + l + 1 ) · ( 2 · N ID cell + 1 ) + 2 · N ID cell + N CP
Wherein, Standard C P (Cyclic Prefix; Cyclic Prefix) under the situation; Under
Figure BDA00001761892500065
expansion CP situation;
Figure BDA00001761892500066
PRS sequence need be mapped to resource, and the modulation symbol that duplicates that is mapped to is:
a k , l ( p ) = r l , n s ( m ′ )
Wherein, p is the antenna end slogan, and setting is 6 in the agreement.
For the mode that CDMA frequency expansion sequence and PRS are sent in the base station, present embodiment is not done concrete qualification.In order to reduce the interference of sending framing signal between the base station, in the method that present embodiment provides, adjacent base station can adopt different frequency to send the CDMA frequency expansion sequence.For example, each base station code check 1MHZ, bandwidth 2MHZ, the CDMA frequency expansion sequence that send the base station are distributed on the different frequency range of LTE of 20M bandwidth, and present embodiment does not limit the concrete frequency that the CDMA frequency expansion sequence is sent in the base station.
203: the terminal receives CDMA frequency expansion sequence and the PRS that send the base station;
Wherein, the terminal is when receiving the CDMA frequency expansion sequence that sends the base station, but the CDMA frequency expansion sequence that receiving neighbor bs adopts different frequency to send.Comprise locating information in the navigation message that this CDMA frequency expansion sequence carries.
204: the initial phase site that obtains the CDMA frequency expansion sequence is slightly caught at the terminal according to PRS;
To this step, present embodiment does not limit the mode that PRS slightly catches, and during practical implementation, can slightly catch PRS according to existing thick acquisition mode.After PRS is slightly caught, slightly catch the initial phase site that the result can obtain the CDMA frequency expansion sequence, the initial phase site of this CDMA frequency expansion sequence can be used for follow-up tracking.
205: the terminal is docked the CDMA frequency expansion sequence of receiving according to the initial phase site of preset corresponding relation between the code phase of CDMA frequency expansion sequence and the PRS and CDMA frequency expansion sequence and is handled; Obtain the navigation message that carries in TDOA (Time Difference of Arrival, the time of advent is poor) information and the CDMA frequency expansion sequence of CDMA frequency expansion sequence incoming terminal;
Particularly; Present embodiment does not dock the CDMA frequency expansion sequence of receiving to the terminal according to the initial phase site of preset corresponding relation between the code phase of CDMA frequency expansion sequence and the PRS and CDMA frequency expansion sequence to be handled; The mode of the navigation message that obtains carrying in TDOA information and the CDMA frequency expansion sequence of CDMA frequency expansion sequence incoming terminal limits, and only describes for example as follows:
At first; According to the initial phase site of CDMA frequency expansion sequence, the code phase of CDMA frequency expansion sequence and the code phase rough estimate value that the preset corresponding relation between the PRS obtains each CDMA frequency expansion sequence, and on the basis of the code phase rough estimate value of each CDMA frequency expansion sequence, utilize frequency search to obtain the carrier frequency rough estimate value of each CDMA frequency expansion sequence;
Secondly; Code phase rough estimate value and carrier frequency rough estimate value according to each CDMA frequency expansion sequence are carried out integration, tenacious tracking to the CDMA frequency expansion sequence that receives; Extract the difference TDOA information time of advent of CDMA frequency expansion sequence incoming terminal through tenacious tracking, and from the CDMA frequency expansion sequence, extract the navigation message that carries in the CDMA frequency expansion sequence the CDMA frequency expansion sequence.
When the CDMA frequency expansion sequence that receives being carried out integration, tenacious tracking, include but not limited to following implementation according to the code phase rough estimate value of each CDMA frequency expansion sequence and carrier frequency rough estimate value:
Code phase rough estimate value and carrier frequency rough estimate value according to each CDMA frequency expansion sequence; Utilize the local correlation that sign indicating number and CDMA frequency expansion sequence take place; The CDMA frequency expansion sequence and the carrier wave that receive are peeled off, and the CDMA frequency expansion sequence after will peeling off carries out integration with the local sign indicating number that takes place;
Sign indicating number ring and carrier wave ring according to the integrated value track loop of gained; Obtain the accurate estimated value of code phase and the accurate estimated value of carrier frequency of each CDMA frequency expansion sequence; And according to accurate estimated value of the code phase of each CDMA frequency expansion sequence and the accurate estimated value of carrier frequency track loop is adjusted, realize tenacious tracking.
Wherein, CDMA frequency expansion sequence after peeling off and the local yard mode of carrying out integration that takes place can be realized that concrete qualification is not done in this enforcement to this according to existing integral way.
206: current elevation information is confirmed according to navigation message and local atmospheric pressure value in the terminal, and/or according to navigation message TDOA information is revised, and positions according to current elevation information and/or revised TDOA information.
Wherein, When current elevation information is confirmed according to navigation message and local atmospheric pressure value in the terminal; Present embodiment is not to confirming that mode limits; To above-mentioned navigation message, the elevation information and the proportionate relationship between the atmospheric pressure value at the place, base station that can comprise according to the locating information in the navigation message obtain the proportionate relationship between current elevation information and the local atmospheric pressure value, confirm current elevation information according to proportionate relationship between current elevation information and the local atmospheric pressure value and local atmospheric pressure value.For example, the elevation information at base station place is X, and atmospheric pressure value is Y, and current elevation information is M, and local atmospheric pressure value is N, and X/Y=M/N then under the known situation of X, Y, N, can obtain current elevation information M.Elevation information, atmospheric pressure value that present embodiment is not located the base station, and the concrete size of local atmospheric pressure value limits.When obtaining local atmospheric pressure value, can measure through local baroceptor.When according to navigation message TDOA information being revised, present embodiment does not limit correcting mode equally, to above-mentioned navigation message, can revise TDOA information according to the time synchronization error update information that comprises in the navigation message.
About the mode that the terminal positions according to current elevation information and/or revised TDOA information, present embodiment is not done concrete qualification, can realize according to the existing mode that positions according to elevation information, TDOA information during practical implementation.In addition; The method that present embodiment provides also comprises the step that positioning result is back to information desk, so that information desk can carry out other location-based service according to this positioning result after positioning according to current elevation information and/or revised TDOA information; For example, position enquiring etc.
The method that present embodiment provides; Obtain the navigation message that comprises locating information through the base station; And this navigation message is carried at sends to the terminal in the framing signal, make the terminal can autonomous positioning, and then reduce the computation burden of information desk according to the locating information in the navigation message; In addition, compare with adopting OFDM modulating mode realization location, the method that present embodiment provides can improve positioning accuracy, reduces the location complexity.
Embodiment three
Present embodiment provides a kind of base station, and this base station is used for carrying out the function of the base station side of the wireless location method that the foregoing description one and embodiment two provide.Referring to Fig. 3, this base station comprises:
Acquisition module 31 is used to obtain navigation message, comprises locating information in this navigation message;
First generation module 32 is used to produce the framing signal of carrying the navigation message that acquisition module 31 gets access to;
Sending module 33 is used for the framing signal that first generation module 32 produces is sent to the terminal, makes the terminal obtain the navigation message in the framing signal, to position according to the locating information in the navigation message.
Wherein, the locating information that comprises in the navigation message that acquisition module 31 gets access to comprises at least: the elevation information and the atmospheric pressure value at place, base station, and/or time synchronization error update information;
Acquisition module 31; Specifically be used for air pressure, temperature, and/or pass through the synchronous update information of clock acquisition time at place, base station, with air pressure, the temperature at place, detected base station through baroceptor base stations detected place; And/or the time synchronized update information carries out the text framing, obtains navigation message.
First generation module 32 specifically is used to generate the required spreading code in location, and utilizes spreading code that navigation message is carried out spread spectrum, obtains carrying the frequency expansion sequence of navigation message, with frequency expansion sequence as framing signal.
Referring to Fig. 4, this base station also comprises:
Second generation module 34 is used to produce pilot signal;
Control module 35; The time that is used for producing according to second generation module 34 pilot signals was controlled the time that first generation module 32 produces the framing signal of carrying navigation message, formed between the pilot signal that the code phase that makes the framing signal that first generation module 32 produces and second generation module 34 produce and preset corresponding relation;
Further, referring to Fig. 5, sending module 33 specifically comprises:
Control unit 331 is used for framing signal is carried out power control, makes the amplitude of framing signal be lower than the amplitude of pilot signal;
Superpositing unit 332 is used for framing signal and pilot signal that control unit 331 carries out after power is controlled are superposeed;
Transmitting element 333 is used for the signal after superpositing unit 332 stacks is sent to the terminal, obtains the navigation message that carries in the framing signal by the terminal according to the code phase of framing signal and the preset corresponding relation between the pilot signal, to position according to navigation message.
Further, sending module 33 specifically is used to adopt the frequency different with adjacent base station that framing signal is sent to the terminal.
The base station that present embodiment provides; Obtain the navigation message that comprises locating information through the base station; And this navigation message is carried at sends to the terminal in the framing signal, make the terminal can autonomous positioning, and then reduce the computation burden of information desk according to the locating information in the navigation message; In addition, compare with adopting OFDM modulating mode realization location, the method that present embodiment provides can improve positioning accuracy, reduces the location complexity.
Need to prove: the base station that the foregoing description provides is when wireless location; Only the division with above-mentioned each functional module is illustrated; In the practical application; Can as required above-mentioned functions be distributed by the different functional completion, the internal structure that is about to the base station is divided into different functional, to accomplish all or part of function of above description.In addition, base station that the foregoing description provides and wireless location method embodiment belong to same design, and its concrete implementation procedure sees method embodiment for details, repeats no more here.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
The all or part of step that one of ordinary skill in the art will appreciate that realization the foregoing description can be accomplished through hardware; Also can instruct relevant hardware to accomplish through program; Described program can be stored in a kind of computer-readable recording medium; The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a wireless location method is characterized in that, said method comprises:
The base station obtains navigation message, comprises locating information in the said navigation message;
The framing signal of said navigation message is carried in generation, and said framing signal is sent to the terminal, makes said terminal obtain the navigation message in the said framing signal, to position according to the locating information in the navigation message.
2. method according to claim 1 is characterized in that, said locating information comprises at least: the elevation information and the atmospheric pressure value at place, said base station, and/or time synchronization error update information;
Said base station obtains navigation message, specifically comprises:
Air pressure, temperature through baroceptor base stations detected place; And/or the synchronous update information of clock acquisition time through base station place; With air pressure, the temperature at place, detected said base station, and/or the time synchronized update information carries out the text framing, obtains navigation message.
3. method according to claim 1 is characterized in that, the framing signal of said navigation message is carried in said generation, specifically comprises:
Generate the required spreading code in location, and utilize said spreading code that said navigation message is carried out spread spectrum, obtain carrying the frequency expansion sequence of said navigation message, with said frequency expansion sequence as framing signal.
4. method according to claim 3 is characterized in that, when the framing signal of said navigation message is carried in said generation, also comprises:
Produce pilot signal, and control according to the time that the time that produces said pilot signal is carried the framing signal of said navigation message to generation, form between the code phase that makes said framing signal and the said pilot signal and preset corresponding relation;
Said said framing signal is sent to the terminal, specifically comprises:
Said framing signal is carried out power control, make the amplitude of said framing signal be lower than the amplitude of said pilot signal;
Framing signal and the said pilot signal that to carry out after power is controlled superpose; And the signal after will superposeing sends to the terminal; Obtain the navigation message that carries in the framing signal by said terminal according to the code phase of said framing signal and the preset corresponding relation between the said pilot signal, to position according to said navigation message.
5. according to the described method of arbitrary claim in the claim 1 to 4, it is characterized in that, said said framing signal sent to the terminal, specifically comprise:
Adopt the frequency different that said framing signal is sent to the terminal with adjacent base station.
6. a base station is characterized in that, said base station comprises:
Acquisition module is used to obtain navigation message, comprises locating information in the said navigation message;
First generation module is used to produce the framing signal of carrying the navigation message that said acquisition module gets access to;
Sending module is used for the framing signal that said first generation module produces is sent to the terminal, makes said terminal obtain the navigation message in the said framing signal, to position according to the locating information in the navigation message.
7. base station according to claim 6 is characterized in that, the locating information that comprises in the navigation message that said acquisition module gets access to comprises at least: the elevation information and the atmospheric pressure value at place, said base station, and/or time synchronization error update information;
Said acquisition module; Specifically be used for air pressure, temperature through baroceptor base stations detected place; And/or the synchronous update information of clock acquisition time through base station place; With air pressure, the temperature at place, detected said base station, and/or the time synchronized update information carries out the text framing, obtains navigation message.
8. base station according to claim 6; It is characterized in that; Said first generation module specifically is used to generate the required spreading code in location, and utilizes said spreading code that said navigation message is carried out spread spectrum; Obtain carrying the frequency expansion sequence of said navigation message, with said frequency expansion sequence as framing signal.
9. base station according to claim 8 is characterized in that, said base station also comprises:
Second generation module is used to produce pilot signal;
Control module; The time that is used for producing according to said second generation module pilot signal was controlled the time that said first generation module produces the framing signal of carrying said navigation message, formed between the pilot signal that the code phase that makes the framing signal that said first generation module produces and said second generation module produce and preset corresponding relation;
Said sending module specifically comprises:
Control unit is used for said framing signal is carried out power control, makes the amplitude of said framing signal be lower than the amplitude of said pilot signal;
Superpositing unit is used for framing signal and said pilot signal that said control unit carries out after power is controlled are superposeed;
Transmitting element; Be used for the signal after the said superpositing unit stack is sent to the terminal; Obtain the navigation message that carries in the framing signal by said terminal according to the code phase of said framing signal and the preset corresponding relation between the said pilot signal, to position according to said navigation message.
10. according to the described base station of arbitrary claim in the claim 6 to 9, it is characterized in that said sending module specifically is used to adopt the frequency different with adjacent base station that said framing signal is sent to the terminal.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105636193A (en) * 2014-10-29 2016-06-01 中兴通讯股份有限公司 In-band positioning signal transmitting method and in-band positioning system of communication network
CN107277766A (en) * 2017-05-15 2017-10-20 北京首科信通科技有限责任公司 navigation locating method and device
CN107765219A (en) * 2016-08-19 2018-03-06 中兴通讯股份有限公司 A kind of methods, devices and systems of radio-positioning measurement
CN112213746A (en) * 2020-10-13 2021-01-12 北京首科信通科技有限责任公司 Positioning method and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616482A (en) * 2009-07-31 2009-12-30 北京邮电大学 Localization method in a kind of mobile communication system and portable terminal, location-server
CN102076003A (en) * 2010-12-13 2011-05-25 北京邮电大学 Locating demodulation chip for mobile broadcasting signal
CN102104837A (en) * 2010-12-13 2011-06-22 北京邮电大学 Positioning method and device based on mobile broadcasting
CN102307328A (en) * 2011-08-22 2012-01-04 北京邮电大学 Positioning signal generation method, transmitter and positioning system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616482A (en) * 2009-07-31 2009-12-30 北京邮电大学 Localization method in a kind of mobile communication system and portable terminal, location-server
CN102076003A (en) * 2010-12-13 2011-05-25 北京邮电大学 Locating demodulation chip for mobile broadcasting signal
CN102104837A (en) * 2010-12-13 2011-06-22 北京邮电大学 Positioning method and device based on mobile broadcasting
CN102307328A (en) * 2011-08-22 2012-01-04 北京邮电大学 Positioning signal generation method, transmitter and positioning system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105636193A (en) * 2014-10-29 2016-06-01 中兴通讯股份有限公司 In-band positioning signal transmitting method and in-band positioning system of communication network
CN105636193B (en) * 2014-10-29 2020-03-31 中兴通讯股份有限公司 In-band positioning signal transmitting method and in-band positioning system of communication network
CN107765219A (en) * 2016-08-19 2018-03-06 中兴通讯股份有限公司 A kind of methods, devices and systems of radio-positioning measurement
CN107277766A (en) * 2017-05-15 2017-10-20 北京首科信通科技有限责任公司 navigation locating method and device
CN112213746A (en) * 2020-10-13 2021-01-12 北京首科信通科技有限责任公司 Positioning method and device

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