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LTE distributed system antenna fault detection method

A distributed system and fault detection technology, applied in wireless communication, character and pattern recognition, services based on specific environments, etc., can solve the problem of inability to judge the signal source at any time, single AP and location ambiguity, and the maximum can only reach 0.2 Hz and other issues

Inactive Publication Date: 2018-12-07
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, after the DAS system is built, the positions of all antennas are unknown, and they are only responsible for sending and receiving signals. At the same time, all antennas have the same Mac address, and the terminal cannot determine the source of the signal at any time, which is equivalent to having a single AP at the same time. In addition, the main purpose of the present invention is the regular fault inspection of indoor distributed antenna systems in some large buildings (such as office buildings, shopping malls, gymnasiums, etc.), because it obtains the RSRP in the LTE network The signal data frequency is extremely low, and its data frequency can only reach 0.2Hz at the highest, which cannot effectively realize real-time accurate position positioning
Therefore, using traditional fingerprint positioning technology to achieve positioning under DAS will face great challenges

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  • LTE distributed system antenna fault detection method
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  • LTE distributed system antenna fault detection method

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Embodiment Construction

[0050] Specific implementation plan

[0051] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings:

[0052] Such as figure 1 The shown antenna failure detection method of an LTE distributed system specifically includes the following steps:

[0053] Step 1. Determine the walkable area and unreachable area according to the experimental scenario, complete the critical walking path planning, and use the test equipment to collect the N Reference Signal Receiving Power (RSRP) sequences of the critical path in the target area, denoted as RSRP 1 ,RSRP 2 ,...,RSRP N , Of which, the i-th RSRP sequence RSRP i (1≤i≤N) is specifically expressed as K i Shared K for the ith RSRP sequence i At the same time, record the corresponding MEMS data;

[0054] Step 2. For each path, calibrate the starting point B 0 =(x 0 ,y 0 ), using MEMS data to calculate the velocity v at any moment through the extended Kalman filter algo...

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Abstract

The invention discloses an LTE distributed system antenna fault detection method. Firstly rapid database creating and adaptive partition of the space region are completed by using pedestrian track reckoning and the K-means clustering algorithm so as to ensure that the regional data have significant characteristics and then the regional database is constructed; then different distribution distancemodels are constructed according to the regional signal distribution situation and EMD between the online measured data and the database is completed by using the improved Earth Mover's Distance (EMD)algorithm so as to complete preliminary selection of the similar regions; and finally the user regional location estimation is realized by the EMD-based multi-layer classification algorithm and antenna troubleshooting is performed in the final location region by using the related test equipment so as to find the location of the fault antenna.

Description

Technical field [0001] The invention belongs to indoor positioning technology, and specifically relates to an antenna failure detection method of an LTE distributed system. Background technique [0002] With the rapid development of mobile communication technology, location-based services have been recognized in related research fields. At present, GPS (Global Positioning Sysytem) and other navigation and positioning systems have become the mainstream technology for outdoor positioning, which can provide high-precision positioning and navigation below the meter level. However, due to many factors such as building occlusion, signal attenuation and multipath effects in the indoor environment As a result, the development of indoor positioning technology is particularly difficult, and it also requires continuous challenges and innovations by more researchers. The most representative indoor positioning is the location fingerprint positioning technology. Traditional location fingerpr...

Claims

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Application Information

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IPC IPC(8): H04W4/33H04W24/04H04W64/00G06K9/62
CPCH04W4/33H04W24/04H04W64/006G06F18/23213G06F18/2411
Inventor 田增山王阳周牧杨小龙王勇谢良波聂伟何维
Owner CHONGQING UNIV OF POSTS & TELECOMM
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