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Method and device for estimation of movement speed of terminal

A mobile speed, terminal technology, applied in electrical components, wireless communication, baseband system components and other directions, can solve problems such as accurate estimation of mobile terminal speed

Active Publication Date: 2016-10-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a method and device for estimating the mobile speed of a terminal to solve the problem of how to accurately estimate the speed of a mobile terminal

Method used

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  • Method and device for estimation of movement speed of terminal
  • Method and device for estimation of movement speed of terminal
  • Method and device for estimation of movement speed of terminal

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Embodiment Construction

[0084] The technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0085] like figure 1 As shown, the method for estimating the mobile speed of the terminal provided by the embodiment of the present invention includes at least the following steps:

[0086] Step 100: Perform channel estimation for at least one pilot symbol in an uplink subframe according to at least two timing times.

[0087] Wherein, the latest timing time of each pilot symbol is the effective signal start time of the pilot symbol, and the earliest timing time of each pilot symbol is not earlier than the cyclic prefix start time of the pilot symbol, and earlier than The effective signal start time of the pilot symbol.

[0088] In the embodiment of the present invention, the pilot symbol is an OFDM symbol where the pilot is transmitted.

[0089] Pilot symbols are divided into pilot symbols that include a cycli...

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Abstract

The present invention discloses a method and device for estimation of a movement speed of a terminal. The method comprises: performing channel estimation of at least one pilot symbol in an upstream subframe according to at least two timing times; and estimating the movement speed of the terminal sending the pilot symbol according to the speed measurement parameters. According to the scheme provided by the invention, the same pilot symbol is subjected to channel estimation according to at least two timing times, the speed measurement parameters are calculated according to the channel estimation result so as to estimate the movement speed of the terminal, and therefore the time difference of obtained at least two rows of channel estimation results is smaller than the channel estimation result of the pilot symbol of two time slot of the same subframe. The time difference of the channel estimation results is smaller, the obtained frequency offset range is larger. According to the technical scheme of the invention, the movement speed of a terminal can be accurately estimated when the frequency offset range is large caused by the high-speed movement of the terminal.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for estimating a moving speed of a terminal. Background technique [0002] With the rapid development of high-speed rail, high-speed rail has become an important means of transportation for people to travel. The current operating speed of high-speed railways can reach more than 300km / h. With the development of technology in the future, it is more likely to reach 500km / h. In order to meet the communication needs of high-speed rail users, operators set up high-speed rail scenarios along the railway. The user's communication quality. Of course, it is not ruled out that operators will set up dedicated networks for other high-speed scenarios to meet the needs of other high-speed scenarios. In wireless communication, due to the continuous movement of terminal users, it is inevitable that low-speed mobile users enter the coverage of high-spee...

Claims

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Application Information

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IPC IPC(8): H04W24/00H04L25/02
Inventor 张亚文
Owner DATANG MOBILE COMM EQUIP CO LTD