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Method for estimating terminal speed, device, terminal and base station thereof

A terminal and speed technology, which is applied to terminals and base stations to estimate the mobile speed of terminals, can solve problems such as high computational complexity and error in estimation results, and achieve the effects of improving judgment accuracy, ensuring accuracy, and reducing computational complexity

Inactive Publication Date: 2010-08-04
ZTE CORP
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Problems solved by technology

The working principle of this method is the Doppler effect, which mainly utilizes the linear correspondence between the frequency difference and the radial moving speed of the user. However, since this method can only provide an estimate for the radial moving speed of the user terminal, and its estimation accuracy depends on Due to the measurement accuracy of the user terminal for the frequency deviation, the calculation complexity of this method is high, and the error of the estimation result is large

Method used

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  • Method for estimating terminal speed, device, terminal and base station thereof
  • Method for estimating terminal speed, device, terminal and base station thereof
  • Method for estimating terminal speed, device, terminal and base station thereof

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Embodiment Construction

[0037] The core of the present invention is mainly: in wireless communication system (especially CDMA (Code Division Multiple Access) wireless communication system), utilize the channel impulse response (Impulse response of channel, abbreviation CIR ) data, and estimate the current moving speed of the terminal by comparing the correlation threshold.

[0038] Based on the above ideas, the present invention provides a device for estimating speed in a wireless communication system, which is especially suitable for estimating the moving speed of a mobile station, and can also be used for estimating the speed of other mobile devices in a wireless communication system that move in a similar way to the mobile station. Moving speed.

[0039] The schematic diagram of the device for estimating speed in the wireless communication system of the embodiment of the present invention is as follows figure 1 shown, including:

[0040] The recording module records the CIR estimation data of ad...

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Abstract

The invention provides a method for estimating terminal speed, a device, a terminal and a base station thereof; the method is applied to a wireless communication system; the method comprises the following steps: record channel impulse response estimation data of adjacent time slots respectively; calculate the related value of the channel impulse response estimation data of the adjacent time slots at the same sampling position; compare the calculated related value and the prestored related value of the channel impulse response with the setting related value threshold in a terminal movement speed correspondence table, and estimate the current speed of the corresponding terminal; by adopting the invention, the operation complexity is greatly reduced while ensuring the accuracy of the estimated terminal speed result.

Description

technical field [0001] The present invention relates to a wireless mobile communication technology, in particular to a method and device for estimating the moving speed of a terminal, a terminal and a base station. Background technique [0002] In the wireless communication system, the signal between the user terminal (that is, the mobile terminal) and the base station is transmitted through the wireless channel. The nature of the wireless channel is relatively bad, and there are many interferences such as fading and multipath. The fluctuation speed of the channel fading is related to the movement of the user terminal. Speed ​​has a close relationship, and the mobile communication system is always in a dynamically changing environment. The user terminal may move from a static state to a high-speed mobile state, or may move from an urban environment to a suburban environment, etc. Stable communication is required. [0003] In a wireless mobile communication system, issues suc...

Claims

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Application Information

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IPC IPC(8): H04W64/00G01S11/02
CPCG01S11/06H04W64/006
Inventor 杨洁
Owner ZTE CORP
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