Positioning data processing method and device for mobile station positioning service
A technology for positioning data and positioning services, which is applied to services based on location information, electrical components, wireless communications, etc., and can solve the problems that TOA data cannot be directly applied to upper-layer positioning services, and cannot accurately represent the distance from the mobile station to the array antenna. Achieve the effect of improving accuracy, resisting the influence of errors, and solving inaccurate estimation
Active Publication Date: 2011-11-30
CHINA TELECOM CORP LTD
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Therefore, it is necessary to process these original DOA data through a certain algorithm, and the processed DOA data can be applied to the actual positioning service; otherwise, it will not be possible to accurately locate the mobile station
[0006] Similarly, due to factors such as indirect radiation, multipath effects, and fading, the TOA data directly obtained through the array antenna will also undergo large jumps, which cannot accurately represent the distance from the mobile station to the array antenna
Therefore, the TOA data directly output by the array antenna cannot be directly applied to the upper layer positioning service
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[0028] For the sake of simplicity and clarity, elements in the figures are not necessarily drawn to scale and like reference numerals refer to like elements in different figures. Furthermore, descriptions and details about well-known steps and units are omitted for conciseness of description and not to obscure the invention in unnecessary aspects.
[0029] It should be understood by those of ordinary skill in the art that the foregoing general description and the following detailed description illustrate and describe the invention rather than limit the invention.
[0030] According to the method and device of the present invention, according to DOA and TOA data and other information, the actual position of the mobile station is estimated by memorizing and predicting the moving route of the mobile station. The following will refer to Figure 2-4 Let's describe the present invention in more detail.
[0031] exist figure 2 The figure schematically shows how to perform positio...
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The invention proposes a positioning data processing method and a device thereof which are applied to mobile station positioning services in an array antenna system. The method comprises the following steps: acquiring direction of arrival data and time of arrival data; determining calculated position data (a, b) of the mobile station according to the direction of arrival data and time of arrival data; fitting and estimating the moving route of the mobile station; estimating the movement The predicted position data (b*) of the station at the next moment; and the predicted position data (b*) and the corresponding calculated position data (b) are processed to obtain the position output data (B). According to the method and device of the present invention, according to DOA and TOA data and other information, the actual position of the mobile station is estimated by memorizing and predicting the moving route of the mobile station. The present invention can improve the accuracy of applying DOA and TOA estimation data in the actual environment as a whole, so that the data can be applied to upper-layer positioning services.
Description
technical field [0001] The present invention relates to the field of mobile communication, and in particular, the present invention relates to a method and device for processing data of a mobile station positioning service in an array antenna system (eg, TD-SCDMA system, etc.). Background technique [0002] Those skilled in the art can know that in an array antenna system, DOA (direction of arrival) information and TOA (time of arrival) information can be output by the array antenna. The distance from the mobile station (MS) to the array antenna can be calculated through the TOA information. The position of the mobile station can be determined from the calculated distance and the output DOA information. [0003] However, in practical applications, the accuracy of DOA estimation depends on the adopted algorithm and its applicable channel environment conditions. Generally speaking, DOA estimation algorithms (for example: MUSIC, ESPRIT algorithm and its improved algorithm, et...
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IPC IPC(8): H04W4/02H04W64/00
Inventor 马欣
Owner CHINA TELECOM CORP LTD