Device, positioning device and method for realizing signal quasi-synchronization
A technology of a positioning device and a positioning method, which is applied in the field of wireless communication, can solve the problems of unable to obtain synchronization effect, complex structure, synchronization signal easily affected by space occlusion, multipath effect and interference signal, etc.
Active Publication Date: 2016-10-12
KUNCHEN TECH CO LTD
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In the prior art, there are mainly two commonly used synchronization methods between positioning base stations. One is that each positioning base station contains an accurate synchronization clock, such as an atomic clock. This method is expensive and needs to be regularly checked. Clock verification; the second is to use wireless paths to transmit synchronization signals between positioning base stations. This method requires each positioning base station to include a wireless receiver. The wireless receiver needs to filter, amplify, and shape the signal, and its structure is more complicated. , the cost and power consumption are high, and the synchronization signal transmitted by the wireless path is easily affected by space occlusion, multipath effect and interference signal, so that a good synchronization effect cannot be obtained
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[0018] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, materials or methods have not been described in detail in order to avoid obscuring the present invention.
[0019] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in on...
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A quasi-synchronization structure (100), and a positioning device and a positioning method thereof. The positioning device comprises a first means (BSi), a wire line (LINi), a second means (BS(i+1)), and a third means (MS), wherein the first means (BSi) transmits a first positioning signal (Si) and provides a synchronization signal (SYNi); the first positioning signal (Si) and the synchronization signal (SYNi) have a known time relationship; the wire line (LINi) comprises a first end and a second end, the first end receives the synchronization signal (SYNi) from the first device (BSi); the second device (BS(i+1)) receives the synchronization signal (SYNi) from the second end of the wire line (LINi) and transmits a second positioning signal (S(i+1)) after being triggered by the synchronization signal (SYNi); the third device (MS) receives the second positioning signal (S(i+1)) and the first positioning signal (Si) and obtains a time difference of arrival of the second positioning signal (S(i+1)) and the first positioning signal (Si). By transmitting synchronization signals (SYNi) between different positioning base stations (BSi, BS(i+1)) using a wire line (LINi), high-precision synchronization between the positioning base stations (BSi, BS(i+1)) can be implemented with low costs.
Description
technical field [0001] The present disclosure relates to wireless communications, and more particularly, the present disclosure relates to synchronization between signals in wireless communications. Background technique [0002] Short-range, high-precision wireless indoor positioning technology is widely used in dense urban areas and indoor closed spaces. Commonly used positioning algorithms in existing indoor positioning technologies include Time of Arrival (TOA) positioning and Time Difference of Arrival (TDOA) positioning. In the implementation process of the above algorithm, precise time synchronization between each positioning base station and mobile terminal is required to achieve high positioning accuracy. In the prior art, there are mainly two commonly used synchronization methods between positioning base stations. One is that each positioning base station contains an accurate synchronization clock, such as an atomic clock. This method is expensive and needs to be r...
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IPC IPC(8): G01S5/06
CPCG01S5/10G01S5/12
Inventor 杨德强朱晓章张晨曦李飞雪赵志钦陈祝明
Owner KUNCHEN TECH CO LTD