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Method and apparatus for estimating the velocity of a mobile terminal

A speed and frequency offset technology, applied in the field of estimating the speed and device of mobile terminals, which can solve the problems of inaccurate and unsatisfactory results

Inactive Publication Date: 2017-04-12
ZTE WISTRON TELECOM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to various practical reasons, such as the presence of multipath, this speed measurement technique usually provides inaccurate or unsatisfactory results

Method used

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  • Method and apparatus for estimating the velocity of a mobile terminal
  • Method and apparatus for estimating the velocity of a mobile terminal
  • Method and apparatus for estimating the velocity of a mobile terminal

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Embodiment Construction

[0017] This patent document discloses techniques for estimating the velocity of a mobile terminal on the move and estimating channel characteristics for communication with the mobile terminal on the move in a wireless communication system. In a wide-area wireless network, such as a Long Term Evolution (LTE) network, the base station is usually fixed, and one or more user equipment (for example, a wireless cellular phone, tablet, laptop, etc.) as the base station moves around it. Although the disclosed technique is disclosed as a base station implemented in a wireless cellular network, the technique is equally applicable to other mobile deployments where a mobile communication device moves relative to a fixed base station or access point, such as, for example, based on the 802.11x standard or Wireless LAN such as Wi-MAX standard.

[0018] The disclosed techniques can be used to measure the speed of a mobile terminal by measuring at the receiver a plurality of received transmis...

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Abstract

Systems, devices, and methods for wireless communications include receiving a plurality of wireless transmissions from a transmitter of a mobile terminal during an observation period, calculating a plurality of frequency offset values ​​based on the plurality of received wireless transmissions, estimating a plurality of frequency offset values ​​based on the plurality of frequency offset values speed value. In some embodiments, the velocity value is determined as a function of the calculated frequency offset measurement error. Embodiments may be arranged to include estimating channel characteristics for communication between the base station and the mobile terminal based on the estimated speed, optimizing characteristics of the communication with the mobile terminal based on the estimated channel characteristics. In some implementations, the characteristic may include a modulation scheme or transmission schedule used for communication between the base station and the mobile terminal.

Description

[0001] priority statement [0002] This patent document is a timely claim of prior U.S. Provisional Patent Application Serial No. 61 / 556,135, filed with the U.S. Patent and Trademark Office on November 4, 2011, and entitled "METHOD AND APPARATUS FOR ESTIMATING SPEED OF A MOBILE TERMINAL" Priority and all interest, this patent application was assigned to ZTE WISTRON TELECOM AB on November 29, 2011 by the inventor, James Peroulas. technical field [0003] This patent document relates to systems, devices and techniques for estimating the velocity of a mobile terminal in a wireless communication system. Background technique [0004] In wireless mobile communication systems, transmitters and receivers often perform operations to maintain or improve the characteristics of a communication channel. For example, in cellular networks (e.g., 2G, 3G, 4G, CDMA, GSM, LTE, etc.), base stations and mobile terminals can periodically estimate or measure transmission characteristics of channe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S11/02H04W4/02
CPCG01S11/10H04W4/027H04W4/02
Inventor 詹姆士·普托拉斯
Owner ZTE WISTRON TELECOM