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Method and apparatus for sequencing and correlating a positioning reference signal

A technology for positioning reference signal and reference signal, which is applied in the field of wireless communication and can solve problems such as difficulty in location determination, impact on location-based services and emergency call response, etc.

Inactive Publication Date: 2012-08-22
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in dense urban environments, mobile devices may only reliably receive transmissions from one or two base stations
As a result, location determination can be difficult, affecting location-based services and emergency call response

Method used

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  • Method and apparatus for sequencing and correlating a positioning reference signal
  • Method and apparatus for sequencing and correlating a positioning reference signal
  • Method and apparatus for sequencing and correlating a positioning reference signal

Examples

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Embodiment Construction

[0033] Various embodiments are now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that the described embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form to facilitate describing one or more embodiments.

[0034] This specification discloses a method and apparatus that facilitates sequencing and correlation of positioning reference signals. In one aspect, such positioning reference signals can be used to detect neighboring cells with low geometry and / or carrying an additional payload of several data bits. Additionally, positioning reference signal designs described herein can be used to improve positioning perform...

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Abstract

Aspects are disclosed for sequencing a positioning reference signal. A set of reference symbols associated with a reference signal are allocated, and a base sequence is generated. An extended sequence, which includes the set of reference symbols, is then provided according to the base sequence. The extended sequence is then transmitted in a sub-frame designated as an idle period. Aspects for correlating a positioning reference signal are also disclosed. A sequence of reference symbols is received from a base station during an idle period of the base station. A replicated sequence of reference symbols is generated, and a correlation is ascertained between a subset of the received sequence of reference symbols and a corresponding subset of the replicated sequence of reference symbols. The received sequence of reference symbols is then identified according to the correlation.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 61 / 160,197, filed March 13, 2009, entitled "Enhanced Idle Period on Downlink Reference Signal Design"; Priority to U.S. Provisional Patent Application No. 61 / 160,609, "Enhanced Idle Period on Downlink Reference Signal Design," and U.S. Provisional Patent Application No. 61, filed April 27, 2009, entitled "Enhanced Idle Period on Downlink Reference Signal Design" / 173,154 priority. The foregoing application is hereby incorporated by reference in its entirety. technical field [0003] The following description relates generally to wireless communications, and more particularly to methods and apparatus for sequencing and correlating positioning reference signals. Background technique [0004] Wireless communication systems are widely deployed to provide various communication contents such as voice, data, and so on. These systems may be multiple...

Claims

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Application Information

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IPC IPC(8): G01S1/02H04W64/00
CPCG01S1/042G01S1/24G01S5/0226H04W64/00
Inventor A·桑佩斯R·保兰基A·D·汉德卡尔R·S·巴楚
Owner QUALCOMM INC
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