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Beacon assisted cell search in a wireless communication system

A wireless communication and beacon technology, applied in the field of communication, can solve the problem of not knowing the receiving base station, etc.

Active Publication Date: 2013-11-20
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The UE may have just powered on or is out of coverage area and thus does not know which base stations it can receive

Method used

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  • Beacon assisted cell search in a wireless communication system
  • Beacon assisted cell search in a wireless communication system
  • Beacon assisted cell search in a wireless communication system

Examples

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Embodiment Construction

[0031] The techniques described in this application may be used in various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and others. The terms "system" and "network" are often used interchangeably. A CDMA system may implement a radio technology such as Universal Terrestrial Radio Access (UTRA), cdma2000, and others. UTRA includes Wideband-CDMA (W-CDMA) and Low Chip Rate (LCR). cdma2000 covers IS-2000, IS-95 and IS-856 standards. A TDMA system implements a radio technology such as Global System for Mobile Communications (GSM). OFDMA systems can implement wireless technologies such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM etc. UTRA, E-UTRA and GSM are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) is an upcoming version of UMTS that employs E-UTRA, employing OFDMA on the downlink and SC-FDMA on the uplink. UTRA, E-UTRA,...

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Abstract

Techniques for transmitting synchronization signals to assist user equipments (UEs) perform cell searches are described. In one design, a base station for a cell may generate and transmit a primary synchronization signal and a secondary synchronization signal, which may be used by the UEs for initial cell search at power up. The base station may also generate and transmit one or more beacon signals, which may be used by the UEs for neighbor cell search to detect for neighbor cells. The number of beacon signals to transmit and the set of subcarriers usable for each beacon signal may be determined based on the system bandwidth. Each beacon signal may be mapped to one subcarrier in the set of subcarriers in each beacon symbol period. This one subcarrier may be determined based on a beacon hopping pattern or a beacon code and may be dependent on a cell identifier (ID).

Description

[0001] This application claims U.S. Provisional Application No. 60 / 845,268, filed September 14, 2006, entitled "A METHOD ANDAPPARATUS FOR USING SCALABLE BEACON SIGNALING BASED ONSYSTEM BANDWIDTH," filed October 3, 2006, and entitled U.S. Provisional Application No. 60 / 828,051 for "A METHOD AND APPARATUS FOR P-SCH FORE-UTRA," and U.S. Application No. 60 / 828,051, filed September 11, 2007, entitled "BEACON ASSISTED CELL SEARCH IN A WIRELESSCOMMUNICATION SYSTEM" .11 / 853,704, the above three applications have been assigned to the assignee of the present application and are hereby expressly incorporated by reference. technical field [0002] Generally speaking, the present invention relates to communication, and in particular, the present invention relates to a technique for searching cells in a wireless communication system. Background technique [0003] Wireless communication systems are widely deployed to provide various communication contents such as voice, video, packet data,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04B1/713H04W48/16H04W48/12
CPCH04J11/0069H04L5/0064H04W48/16H04L27/2656H04B1/713H04L5/0053H04W48/12H04L5/0023H04L5/0048H04W56/001H04W36/0061
Inventor D·P·马拉蒂J·蒙托霍厉隽怿B-H·金
Owner QUALCOMM INC