Localization measurement method of mobile station

A technology for positioning measurement and mobile station, applied in the directions of positioning, measurement device, radio wave measurement system, etc., can solve the problems of low first-path judgment accuracy, difficult first-path judgment, high false alarm probability, etc., and achieves the noise power threshold Reasonable settings, improve the first path judgment accuracy, and save hardware resources.

Inactive Publication Date: 2003-08-06
HUAWEI TECH CO LTD
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Problems solved by technology

However, the main disadvantage of this method is that: due to the wide search window setting of this method, it becomes more difficult to judge the first path of the signal in the entire search window, and the accuracy of the first path judgment is not high. Under the condition of the threshold, a longer search window makes the false alarm probability of the signal higher, that is, the probability of judging the noise as the first path increases
When the first path signal cannot be detected due to small-scale fading and the time delay difference between the second path and the first path is large, the traditional first path detection method will take the second path as the first path to generate a large Measurement errors, and measurements with large errors are meaningless for position estimation
Therefore, the traditional first-path detection method has the disadvantages of high probability of false alarm and large error of first-path detection, and the large error of first-path detection reduces the accuracy of mobile station positioning

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  • Localization measurement method of mobile station
  • Localization measurement method of mobile station
  • Localization measurement method of mobile station

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] figure 1 A schematic diagram of the mobile station positioning measurement structure is given, which shows the connection relationship between the reference base station 1, the adjacent base station 2, the mobile station 3, and the mobile station positioning center 4.

[0035] figure 2 Provided the overall flow process of the present invention, concrete steps are as follows:

[0036] In step 201, the mobile station positioning center 4 selects a base station that maintains connection with the mobile station 3 as the reference base station 1, and designates several base stations as the adjacent base stations 2 at the same time. Among them, the reference base station 1 can select a base station with higher connection quality from the active set of the mobile station 3 (the base station candidate set maintaining connection with the mobile station...

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Abstract

The invention provides a position measurement method of mobile station. It advances the judging method of the head diameter of the down signal, uses the geometrical relations such as the distance between the mobile station and the referenced base station and the between the adjacent base station and the referenced one to calculate out the effective range of the head diameter of the down signal ofthe adjacent station, according to the parameter of the effective range, and fractionizes out the effective searching window in which thus it makes the judgement of the head diameter.

Description

technical field [0001] The invention relates to the wireless positioning measurement technology in the mobile communication field, in particular to the mobile station positioning measurement technology in the mobile communication field. Background technique [0002] In the field of mobile station wireless positioning, the commonly used positioning methods are TOA (Time Of Arrival) method and TDOA (Time Delay Difference, Time Difference Of Arrival) method, among which the TOA method needs 3 or more TOA values ​​to complete the mobile station positioning , TDOA Complete mobile station positioning requires 2 or more than 2 TDOA values. Generally, the TOA (or TDOA) value can be obtained by measuring the time of arrival (or time difference of arrival) of downlink signals from different base stations to the mobile station. Whether it is the measurement of downlink signal arrival time or arrival time difference, it will involve the problem of how the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02H04W64/00
CPCH04W64/00G01S5/02
Inventor 唐进郭房富段为明
Owner HUAWEI TECH CO LTD
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