CN103684630A - Recognition method and recognition device for transmitter identifiers in China mobile multimedia broadcasting (CMMB) network - Google Patents
Recognition method and recognition device for transmitter identifiers in China mobile multimedia broadcasting (CMMB) network Download PDFInfo
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Abstract
The invention discloses a recognition method and a recognition device for transmitter identifiers in the China mobile multimedia broadcasting (CMMB) network, aiming to solve the technical problem of failure in accurately recognizing transmitter identifiers by the correlation value recognition process in the prior art. The recognition method includes, according to geographic position information of various transmitters preset, measurement information of transmitter identifiers and geographic position information of measurement locations, calculating the time for signals of the preset transmitters to arrive the measurement locations, then comparing the time for the signals of the preset transmitters to arrive the measurement locations to the measurement time for the transmitter identifier signals to arrive the measurement locations, judging the preset transmitter identifiers corresponding to the transmitter identifiers that are measured. By the recognition method and the recognition device, each transmitter can be recognized accurately on the condition that multiple transmitter identifiers with equal correlation values exist in the preset transmitter identifiers, and thus, optimization of the CMMB wireless network is facilitated.
Description
Technical field
The present invention relates to Mobile Digital Multimedia Broadcasting field, relate in particular to recognition methods and the device of sender unit identification in a kind of CMMB network.
Background technology
DMB (the CMMB of China Mobile, China Mobile Multimedia Broadcasting) be the digital TV ground transmission standard that China's Broadcast and TV system is released, adopt the mobile TV of China's independent research to receive standard STiMi (the interactive many service infrastructure in satellite and ground), this standard is applicable to 30MHz to the broadcasting service frequency in 3000MHz frequency range, launch via satellite the broadcast system of the multi-media signals such as TV, broadcast, data message with terrestrial wireless, can realize whole nation roaming.CMMB adopts two cover receiving systems to support U wave band (470MHz～798MHz) and S-band (2635～2660MHZ) simultaneously, and U wave band receives the signal from ground forwarding net, and S-band receives the television broadcasting signal from satellite.
CMMB adopts single frequency network (Single-Frequency Network, SFN) networking, and all transmitters in SFN with keeping pouring in defeated identical signal, have good space diversity gain simultaneously.The signal transmission of CMMB single frequency network adopts OFDM (Orthogonal Frequency Division Multiplexing; OFDM) technology; before each symbolic frame, have a protection interval, system can be guaranteed the orthogonality of subcarrier and prevent the interference of intercarrier.
In CMMB system, identification signal of transmitter is arranged in a section of each time slot beginning of physical layer signal frame, for distinguishing different transmitters.Identification signal of transmitter is that length is that 191 bits (physical layer bandwidth is 8,000,000 o'clock) or length are the pseudo random sequence of 37 bits (physical layer bandwidth is 2,000,000 o'clock), have 256 sequences, wherein sequence 0～sequence 127 is area sign, for marking emitter location, the even number time slot inserting in signal frame sends; Sequence 128～255 is sender unit identification, and for identifying different transmitters in areal, the odd number time slot inserting in signal frame sends.
As shown in Figure 1, physical layer signal is a frame in every 1 second to CMMB physical layer frame structure, is divided into 40 time slots, and the length of each time slot is 25ms, comprises 1 beacon and 53 OFDM symbols.Wherein, the structure of beacon comprises sender unit identification and 2 identical synchronizing signals.
In CMMB Single Frequency Network, identify the signal of each transmitter, be one of groundwork of digital television single-frequency network network optimization.The key of the signal of identification transmitter is to obtain at measurement point the relative time of the various parameters of CMMB wireless network and the signal of each transmitter arrival measurement point.Yet the prerequisite of identifying the signal of each transmitter is correctly to identify sender unit identification, the orthogonality of utilizing sender unit identification is identification sender unit identification and then the basic skills of identifying the signal of each transmitter.Yet in CMMB standard, sender unit identification is also not all the sequence of quadrature, therefore according to correlation, be difficult to identify like clockwork sender unit identification, which transmitter the bolter that will cause like this cannot accurately distinguishing wireless signal in actual measurement is, therefore causes well to CMMB wireless network, being optimized according to the data of actual measurement.
Summary of the invention
In view of this, main purpose of the present invention is to provide recognition methods and the device of sender unit identification in a kind of CMMB wireless network, be used for solving prior art and utilize correlation recognition methods cannot accurately identify sender unit identification, and then cannot accurately identify the technical problem of transmitter signal.
For achieving the above object, technical scheme of the present invention is achieved in that
A recognition methods for sender unit identification in CMMB network, the method comprises:
The sender unit identification of all CMMB transmitters, transmitter geographical location information and transmitter parameter in preset tested region;
Receive measurement data, carry out preset sender unit identification and calculate with the correlation of the sender unit identification measuring, obtain the identification signal of transmitter time of advent measuring;
According to the geographical position of preset transmitter, the current position of receiver and transmitter parameter, calculate each the preset identification signal of transmitter that results in identical with the correlation of the sender unit identification measuring and from preset position, arrive the preset identification signal of transmitter time of advent of the current position of receiver;
According to the described identification signal of transmitter time of advent measuring and the actual corresponding preset sender unit identification of sender unit identification that preset identification signal of transmitter time of advent, identification measured, by the time of advent immediate preset sender unit identification be identified as the actual corresponding sender unit identification of the sender unit identification measuring.
Based on the present invention's one specific embodiment, described in obtain the method for the identification signal of transmitter time of advent measuring and be specially:
According to the transformation parameter of wireless transmission channel corresponding to the identification signal of transmitter measuring, transmitter signal corresponding to sender unit identification that computation and measurement arrives be from the transmitted from transmitter to receiver time used, or calculate and obtain according to the difference that signal transmission time entrained in wireless transmission channel and receiver receive the time of signal.
Based on the present invention's one specific embodiment, the locating module that the current geographic location of described receiver information exchange is excessively built-in or obtain the current geographic location of receiver information from outside geographic position information system by data-interface.
The present invention also provides the recognition device of sender unit identification in a kind of CMMB network, and this device comprises:
Preset parameter unit, for storing all CMMB sender unit identifications, transmitter geographical location information and the transmitter parameter in tested region;
Correlation calculation unit, be connected with external wireless network parameter subsystem and inner preset parameter unit, for carrying out the correlation calculation of preset sender unit identification and the sender unit identification that measures, and export correlation and result in data to correlation result unit;
Correlation result unit, for the data that result in of correlation described in buffer memory; The described correlation data that result at least comprise: the sender unit identification measuring, with described in the identical preset sender unit identification of the correlation of the sender unit identification that measures and corresponding correlation;
Time calculating unit, be connected with external wireless network parameter subsystem, preset parameter participation and correlation result unit, for calculating the signal of each preset sender unit identification that the correlation value calculation of described correlation result data and the sender unit identification that measures comes to the same thing, from preset position, arrive each preset identification signal of transmitter time of advent of receiver position, and the identification signal of transmitter time of advent measuring;
Recognition unit, be connected with described correlation result unit and time calculating unit, the identification signal of transmitter time of advent measuring for basis and the preset identification signal of transmitter actual corresponding preset machine sign of penetrating of sender unit identification that the time of advent, identification measured, export the sender unit identification of identification.
Based on the present invention's one specific embodiment, described time calculating unit comprises:
The first computing unit, be connected with described preset parameter unit and correlation result unit, for calculating the signal of each preset sender unit identification that the correlation value calculation of described correlation result data and the sender unit identification that measures comes to the same thing, from preset position, arrive each preset identification signal of transmitter time of advent of receiver position, and result of calculation is exported to described recognition unit;
The second computing unit, is connected with external wireless network parameter subsystem, the identification signal of transmitter time of advent arriving for computation and measurement, and result of calculation is exported to described recognition unit.
Based on the present invention's one specific embodiment, described device also comprises locating module, and the geographical location information at described locating module output receiver place is given described time calculating unit.
Based on the present invention's one specific embodiment, described time calculating unit is also connected with outside geographic position information system, by data-interface, from outside geographic position information system, obtains the geographical location information that current measuring position is receiver place.
The present invention is according to the geographical location information in the geographical location information of each preset transmitter, the identification signal of transmitter information measuring and measurement place, the signal that calculates preset transmitter arrives to be measured the place time, by comparing the signal of preset transmitter, arrive the time that the identification signal of transmitter of measuring the place time and measuring arrives measurement place, the concrete corresponding preset sender unit identification of sender unit identification that judgement measures.By the present invention, can in the situation that there is accurately each transmitter of identification of a plurality of sender unit identifications that autocorrelation value is identical in preset sender unit identification, be conducive to CMMB wireless network to be optimized.
Accompanying drawing explanation
Fig. 1 is CMMB physical layer frame structure;
The structural representation of the CMMB wireless network analyzer that Fig. 2 is used while being conventionally execution drive test;
Fig. 3 is sender unit identification recognition device structural representation in CMMB wireless network provided by the invention;
Fig. 4 is amplitude and the time relationship schematic diagram of two transmitter signals measuring of embodiment 1;
Fig. 5 is that in embodiment 1 and 2, three preset transmitter sites are related to schematic diagram;
Fig. 6 is signal amplitude and the time relationship schematic diagram of three preset transmitter signal arrival measurement points in embodiment 1;
Fig. 7 is definite two transmitter signals that measure of embodiment 1 and the corresponding relation schematic diagram of preset transmitter signal;
Fig. 8 is amplitude and the time relationship schematic diagram of three transmitter signals measuring of embodiment 2;
Fig. 9 is signal amplitude and the time relationship schematic diagram of three preset transmitter signal arrival measurement points in embodiment 2;
Figure 10 is definite three transmitter signals that measure of embodiment 2 and the corresponding relation schematic diagram of preset transmitter signal.
Embodiment
Basic thought of the present invention is: each sender unit identification in preset CMMB network and geographical location information corresponding to each transmitter, sender unit identification is being carried out on the basis of correlation detection, to the sender unit identification that cannot identify by correlation values detection, according to the geographical location information of each preset transmitter, the geographical location information in the sender unit identification measuring and measurement place, the signal that calculates preset transmitter arrives to be measured the place time, by comparing the signal of preset transmitter, arrive the time that the identification signal of transmitter of measuring the place time and measuring arrives measurement place, the sender unit identification that measures of judgement concrete corresponding be which preset sender unit identification.
For making the object, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.
The structural representation of the CMMB wireless network analyzer that Fig. 2 is used while being conventionally execution drive test, in CMMB wireless network analyzer inside, comprise two main parts, be respectively wireless network parameter measurement subsystem and sender unit identification Measurement and analysis subsystem, wherein, wireless network parameter measurement subsystem sends to sender unit identification Measurement and analysis subsystem by measurement data, by sender unit identification Measurement and analysis subsystem identification sender unit identification the relative time that provides each transmitter signal, is postponed.Described measurement data includes but not limited to the sender unit identification measuring, the data such as the time of advent of the identification signal of transmitter measuring.
Fig. 3 is the structural representation of sender unit identification recognition device in CMMB wireless network provided by the invention, this device is arranged in above-mentioned sender unit identification Measurement and analysis subsystem, and this device specifically comprises: preset parameter unit, correlation calculation unit, correlation result unit, time calculating unit, recognition unit.
Preset parameter unit, for preset or store all CMMB sender unit identifications, transmitter geographical location information and the transmitter parameter in tested region (province, city or district, county etc.), this unit can be actual in a readable storage medium of writing, such as EPROM, memory chip or magnetic-based storage media etc., can be by data/address bus and reads and writes accordingly control logic chip and control bus and be connected with preset parameter unit with correlation calculation unit in this unit.Described transmitter parameter, in the situation that each preset transmitter tranmitting frequency is not identical, also should comprise for transmitter computes signal the parameter in the transmission time of network, and such as tranmitting frequency etc., described geographical location information comprises longitude, latitude and height;
Correlation calculation unit, this unit is connected with external wireless network parameter subsystem by external data and control bus, by internal data and control bus, be connected with preset parameter unit, correlated results unit, for receiving the measurement data of wireless network parameter measurement subsystem output, carry out the correlation calculation of preset sender unit identification and the sender unit identification that measures, and the correlation data that result in are exported to correlation result unit and preserved.This unit can an actual corresponding hardware chip being comprised of input and output logic, correlation calculation logic.Described preset sender unit identification reads from described preset parameter unit, described in the sender unit identification that measures from measurement data input interface, resolve and obtain.The described correlation data that result at least comprise: the sender unit identification measuring, with described in the identical preset sender unit identification of the correlation of the sender unit identification that measures and corresponding correlation.
In CMMB Radio Network System, can set altogether 256 sender unit identifications, the relevant calculation value of establishing i sender unit identification is R
i, this identification signal of transmitter measuring is m, and m is one-dimensional vector, and the sender unit identification of stipulating in CMMB standard is that preset sender unit identification is s, and s is also an one-dimensional vector, has:
Wherein, i is for for identifying the sequence number of the sender unit identification that CMMB Radio Network System defines, 0≤i≤255, and j represents 0≤j≤255, position of bit in the sender unit identification defining in CMMB standard.
Correlation result unit, this unit is connected with correlation calculation unit, recognition unit, time calculating unit by data and control bus, the correlation sending for the buffer memory correlation calculation unit data that result in.This unit can actual corresponding a storage medium, for example random access storage device RAM.
Suppose preset 256 sender unit identifications in preset parameter unit, but due to sender unit identification in CMMB is also not all the sequence of quadrature, in the situation that there is the autocorrelation value of a plurality of sender unit identifications identical in preset sender unit identification, by cause correlation calculation unit computation and measurement to sender unit identification to have the correlation value calculation result of preset sender unit identification of identical autocorrelation value identical or (be simplicity of exposition within preset deviation range with these, it is identical that the present invention is referred to as correlation), thereby cannot discriminating measurement to sender unit identification correspondence there is which in the preset sender unit identification of identical autocorrelation value.Certainly, if the correlation of the sender unit identification the measuring sender unit identification preset with each not identical (or all not in preset deviation range), the sender unit identification that could directly the highest preset reflection machine sign of correlation is defined as being measured to.The present invention solves the above-mentioned problem that can not identify measured sender unit identification under correlation same case by time calculating unit and recognition unit in conjunction with transmitter and receiver geographic location information.
Time calculating unit, is connected with wireless network parameter subsystem by external data and control bus, by internal data and control bus, is connected with preset parameter unit, correlation result unit, recognition unit.For calculating the signal of each preset sender unit identification that the correlation value calculation of described correlation result data and the sender unit identification that measures comes to the same thing, from preset position, arrive each preset identification signal of transmitter time of advent of receiver position, and the identification signal of transmitter time of advent measuring.
Time calculating unit further comprises the first computing unit and the second computing unit, the preset sender unit identification that the first computing unit comes to the same thing for the correlation value calculation of obtaining from correlation result unit correlation result data with the sender unit identification measuring, according to the preset sender unit identification reading from correlation result unit, from preset parameter unit, read transmitter parameter and the geographical location information corresponding with described preset sender unit identification, and then according to the geographical location information at receiver place, calculate each preset identification signal of transmitter and from preset position, arrive the time of arrival (toa) of receiver position, each the preset identification signal of transmitter calculate obtaining is exported to recognition unit the time of advent.This unit can actual be realized by input and output logic and computational logic chip.
The second computing unit in time calculating unit is for obtaining according to the measurement data of obtaining from external wireless network parameter subsystem the identification signal of transmitter time of advent measuring.The described identification signal of transmitter measuring is according to the transformation parameter of wireless transmission channel corresponding to the identification signal of transmitter measuring the time of advent, such as tranmitting frequency etc., transmitter signal corresponding to sender unit identification that computation and measurement arrives be from the transmitted from transmitter to receiver time used, or calculate and obtain according to the difference that signal transmission time entrained in wireless transmission channel and receiver receive the time of signal.In this unit, store the time of arrival (toa) that each sender unit identification measuring and this corresponding sender unit identification measuring thereof arrive receiver.This unit can actual be realized by input and output logic and computational logic chip.
Describedly obtain preset identification signal of transmitter and be specially the time of advent: first according to the geographical position in preset transmitter parameter and the current position of receiver, calculate signal transmission distance, and then according to parameter simulations such as signal tranmitting frequencies in preset transmitter parameter, calculate the preset transmitter time of advent of preset identification signal of transmitter current position from preset position to receiver.
The current position of described receiver can be preset in time calculating unit or preset parameter unit before measurement by survey crew, also can Real-time Obtaining.Time calculating unit can be installed built-in locating module or from outside geographic position information system, be obtained the current geographic location of receiver information by data-interface by this.Described locating module can be the terminal positioning module of global position system GPS terminal module, Chinese Big Dipper global positioning system etc., and described geographic position information system can be map navigation system having location navigation function etc.
Recognition unit, by data and control bus, be connected with correlation result unit, time calculating unit, the identification signal of transmitter time of advent measuring for basis and the preset identification signal of transmitter actual corresponding preset sender unit identification of sender unit identification that the time of advent, identification measured, by the time of advent immediate preset sender unit identification be identified as the actual corresponding sender unit identification of the sender unit identification that measures, and the sender unit identification of output identification; In the correlation of the sender unit identification the measuring sender unit identification preset with each not identical (or all not in the situation that in preset deviation range), this unit is identified as the actual corresponding sender unit identification of the sender unit identification measuring by the correlation the highest preset sender unit identification of correlation in data that results in, and the sender unit identification of output identification.This unit can be realized by input and output logic and comparator.
In the situation that having identical correlation, knowing method for distinguishing is specially: the time of arrival (toa) of the sender unit identification measuring of storing in the time of arrival (toa) of each preset identification signal of transmitter arrival current position of receiver that time calculating unit analog computation is obtained and correlation result unit compares one by one, and time consistency or immediate two sender unit identifications are the sender unit identification of actual correspondence.By above-mentioned determination methods, determine one by one all sender unit identifications of measuring in current measuring position and the corresponding relation of preset sender unit identification.
Embodiment 1
The sender unit identification number measuring in this embodiment in correlation result unit is less than sender unit identification number preset in preset parameter unit.Be located at preset three transmitter A, B, C and geographical location information thereof in preset parameter unit, the autocorrelation value of A, B, tri-transmitters of C is identical.
Fig. 4 the has been example time of advent and the amplitude schematic diagram of two transmitter signals measuring in current measuring position, abscissa is time shaft, ordinate is signal amplitude, after correlation calculation unit calculation, find that there is the relevant identical of 2 sender unit identifications that measure and 3 preset sender unit identifications in preset parameter unit, which two transmitter therefore by correlation, cannot differentiate 2 sender unit identifications that measure is.
Time calculating unit calculates according to above-mentioned 3 the preset geographical location information of preset sender unit identification and the geographical location information at present receiving machine place with identical correlation the time of arrival (toa) that preset identification signal of transmitter arrives measuring position.Fig. 5 example the position relationship of three transmitter A, B, C and current measuring positions, T
afor the id signal of preset transmitter A arrives the preset transmitter A id signal time of advent that receiver position is current measuring position, T from preset position
bthe id signal of preset transmitter B arrives the preset transmitter B id signal time of advent that receiver position is current measuring position, T from preset position
cthe id signal of preset transmitter C arrives from preset position the preset transmitter C id signal time of advent that receiver position is current measuring position.Fig. 6 is that three transmitter A, B preset in preset parameter unit, the signal of C arrive measuring position time and amplitude schematic diagram, because measuring position is nearer apart from transmitter B, so the signal of transmitter B first arrives measuring position, measuring position apart from transmitter C distance farthest, so the signal of transmitter C arrives measuring position the latest.
Recognition unit is according to the result of calculation of time calculating unit and correlation result unit correlation specifically which two in preset three transmitter A, B, C of the measured sender unit identification of judgement that result in.
Recognition unit is compared one by one the transmitter signal that in correlation result unit, two measure and is arrived the time of measuring position and three transmitter A that time calculating unit calculates, B, the signal of C arrives the time of measuring position, the signal of transmitter B arrives measuring position time and first transmitter signal measuring and arrives the time consistency of measuring position or the most approaching, the signal of transmitter A arrives measuring position time and second transmitter signal measuring and arrives the time consistency of measuring position or the most approaching, therefore judge that first sender unit identification measuring is transmitter B, second sender unit identification measuring is transmitter A.Due to transmitter, C is distant, and power attenuation is larger, and its signal arrives the signal of receiver lower than the measurement threshold value of receiver, so could not detect.The signal time delay of the sender unit identification of final definite identification and arrival receiver as shown in Figure 7.
Embodiment 2
The sender unit identification number measuring in this embodiment in correlation result unit equals sender unit identification number preset in preset parameter unit.Be located at preset three transmitter A, B, C and geographical location information thereof in preset parameter unit, the autocorrelation value of A, B, tri-transmitters of C is identical.The position relationship of A, B, tri-transmitters of C is with shown in Fig. 5;
The time of advent and amplitude schematic diagram that Fig. 8 is three transmitter signals measuring in current measuring position, after the calculation of correlation calculation unit, find that there is the relevant identical of 3 sender unit identifications that measure and 3 preset sender unit identifications in preset parameter unit.
Time calculating unit calculates according to current measuring position the time that signal arrives each transmitter site in preset parameter unit, obtains signal amplitude and the graph of a relation of time as shown in Figure 9, T
afor the id signal of preset transmitter A arrives the preset transmitter A id signal time of advent that receiver position is current measuring position, T from preset position
bthe id signal of preset transmitter B arrives the preset transmitter B id signal time of advent that receiver position is current measuring position, T from preset position
cthe id signal of preset transmitter C arrives from preset position the preset transmitter C id signal time of advent that receiver position is current measuring position.Because measuring position is nearer apart from transmitter B, so the signal of transmitter B first arrives measuring position, measuring position apart from transmitter C distance farthest, so the signal of transmitter C arrives measuring position the latest.
Recognition unit is compared one by one the identification signal of transmitter that in correlation result unit, three measure and is arrived the time of measuring position and three transmitter A that time calculating unit calculates, B, the signal of C arrives the time of measuring position, due to the signal arrival measuring position time of transmitter B and the time consistency of first transmitter signal arrival measuring position measuring or the most approaching, the signal of transmitter A arrives measuring position time and second transmitter signal measuring and arrives the time consistency of measuring position or the most approaching, the signal of transmitter C arrives measuring position time and the 3rd transmitter signal measuring and arrives the time consistency of measuring position or the most approaching, therefore judge that first sender unit identification measuring is transmitter B, second sender unit identification measuring is transmitter A, the 3rd sender unit identification measuring is transmitter C.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (7)
1. a recognition methods for sender unit identification in CMMB network, is characterized in that, the method comprises:
The sender unit identification of all CMMB transmitters, transmitter geographical location information and transmitter parameter in preset tested region;
Receive measurement data, carry out preset sender unit identification and calculate with the correlation of the sender unit identification measuring, obtain the identification signal of transmitter time of advent measuring;
According to the geographical position of preset transmitter, the current position of receiver and transmitter parameter, calculate each the preset identification signal of transmitter that results in identical with the correlation of the sender unit identification measuring and from preset position, arrive the preset identification signal of transmitter time of advent of the current position of receiver;
According to the described identification signal of transmitter time of advent measuring and the actual corresponding preset sender unit identification of sender unit identification that preset identification signal of transmitter time of advent, identification measured, by the time of advent immediate preset sender unit identification be identified as the actual corresponding sender unit identification of the sender unit identification measuring.
2. method according to claim 1, is characterized in that, described in obtain the method for the identification signal of transmitter time of advent measuring and be specially:
According to the transformation parameter of wireless transmission channel corresponding to the identification signal of transmitter measuring, transmitter signal corresponding to sender unit identification that computation and measurement arrives be from the transmitted from transmitter to receiver time used, or calculate and obtain according to the difference that signal transmission time entrained in wireless transmission channel and receiver receive the time of signal.
3. method according to claim 1, is characterized in that,
The locating module that the current geographic location of described receiver information exchange is excessively built-in or obtain the current geographic location of receiver information from outside geographic position information system by data-interface.
4. a recognition device for sender unit identification in CMMB network, is characterized in that, this device comprises:
Preset parameter unit, for storing all CMMB sender unit identifications, transmitter geographical location information and the transmitter parameter in tested region;
Correlation calculation unit, be connected with external wireless network parameter subsystem and inner preset parameter unit, for carrying out the correlation calculation of preset sender unit identification and the sender unit identification that measures, and export correlation and result in data to correlation result unit;
Correlation result unit, for the data that result in of correlation described in buffer memory; The described correlation data that result at least comprise: the sender unit identification measuring, with described in the identical preset sender unit identification of the correlation of the sender unit identification that measures and corresponding correlation;
Time calculating unit, be connected with external wireless network parameter subsystem, preset parameter participation and correlation result unit, for calculating the signal of each preset sender unit identification that the correlation value calculation of described correlation result data and the sender unit identification that measures comes to the same thing, from preset position, arrive each preset identification signal of transmitter time of advent of receiver position, and the identification signal of transmitter time of advent measuring;
Recognition unit, be connected with described correlation result unit and time calculating unit, the identification signal of transmitter time of advent measuring for basis and the preset identification signal of transmitter actual corresponding preset machine sign of penetrating of sender unit identification that the time of advent, identification measured, export the sender unit identification of identification.
5. device according to claim 4, is characterized in that, described time calculating unit comprises:
The first computing unit, be connected with described preset parameter unit and correlation result unit, for calculating the signal of each preset sender unit identification that the correlation value calculation of described correlation result data and the sender unit identification that measures comes to the same thing, from preset position, arrive each preset identification signal of transmitter time of advent of receiver position, and result of calculation is exported to described recognition unit;
The second computing unit, is connected with external wireless network parameter subsystem, the identification signal of transmitter time of advent arriving for computation and measurement, and result of calculation is exported to described recognition unit.
6. device according to claim 4, is characterized in that, described device also comprises locating module, and the geographical location information at described locating module output receiver place is given described time calculating unit.
7. device according to claim 4, it is characterized in that, described time calculating unit is also connected with outside geographic position information system, by data-interface, from outside geographic position information system, obtains the geographical location information that current measuring position is receiver place.
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| 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 |
| US20100278079A1 (en) * | 2008-01-11 | 2010-11-04 | Steffen Meyer | Apparatus and method for determining a coincidence of a position with a reference position |
| CN101883426A (en) * | 2010-06-19 | 2010-11-10 | 中国海洋大学 | Ultra-wideband wireless positioning method with high precision |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100278079A1 (en) * | 2008-01-11 | 2010-11-04 | Steffen Meyer | Apparatus and method for determining a coincidence of a position with a reference position |
| 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 |
| CN101883426A (en) * | 2010-06-19 | 2010-11-10 | 中国海洋大学 | Ultra-wideband wireless positioning method with high precision |
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