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Method and device for detecting speed of mobile terminal

A mobile terminal and speed detection technology, which is applied in the field of mobile communication and can solve the problems of inaccurate speed detection results of mobile terminals.

Active Publication Date: 2011-02-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The inventor found that: in the OFDM system, the speed of the mobile terminal is only detected based on the channel estimation value at the reference signal, and the obtained speed detection result of the mobile terminal is inaccurate

Method used

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  • Method and device for detecting speed of mobile terminal
  • Method and device for detecting speed of mobile terminal
  • Method and device for detecting speed of mobile terminal

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Embodiment Construction

[0068] Hereinafter, the realization of the method and device for detecting the speed of a mobile terminal according to the embodiments of the present invention will be described in detail in conjunction with the accompanying drawings.

[0069] figure 1 It is a schematic flow chart of a method for detecting the speed of a mobile terminal according to an embodiment of the present invention, as shown in figure 1 shown, including:

[0070] Step 101: Perform noise estimation according to received network side data to obtain a noise estimation value.

[0071] Step 102: Perform channel estimation according to the received network side data, and extract the channel estimation value at the reference signal from the obtained channel estimation value.

[0072] The execution sequence between step 101 and step 102 is not limited here.

[0073] Step 103: Determine an instantaneous maximum Doppler spread value according to the estimated noise value and the estimated channel value at the r...

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Abstract

The invention discloses a method and a device for detecting the speed of a mobile terminal. The method comprises the following steps of: performing noise estimation according to received network side data to obtain noise estimation values; performing channel estimation according to the received network side data and extracting a channel estimation value at a reference signal from obtained channelestimation values; determining an instantaneous maximum Doppler spread value according to the noise estimation values and the channel estimation value at the reference signal; and computing the speedof the mobile terminal according to the maximum Doppler spread value. In the method and the device, the more accurate speed of the mobile terminal can be detected in an orthogonal frequency division multiplexing (OFDM) system.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for detecting the speed of a mobile terminal. Background technique [0002] In a mobile communication system, the speed of a mobile terminal is a very important parameter. Pass the test? The mobile terminal speed can realize the overall optimization of the mobile communication system from the bottom physical layer to the high-level protocol layer. For example, mobile terminal speed is necessary information to realize a multi-layer cellular structure, and it can be used as one of the important parameters of cellular layer allocation strategy and wireless resource management; it is also an important basis for solving the problem of mobile terminal call drop; in addition, it can also be used for wireless The optimization of the receiver, such as the optimization of the receiving performance of the wireless receiver, etc. [0003] Currently, for single-carri...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04W64/00G01S11/00
Inventor 徐兵陈颖罗新
Owner DATANG MOBILE COMM EQUIP CO LTD
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