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Method and apparatus for efficient selection and acquisition of systems utilizing OFDM or sc-fdm

A technology of SC-FDM, configuration system, applied in the field of communication, can solve the problems of consumption, prolonging search time, multi-battery power, etc.

Active Publication Date: 2010-07-14
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Performing capture for a large number of possible combinations of parameter values ​​prolongs the search time and consumes excessive battery power, both of which are undesirable

Method used

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  • Method and apparatus for efficient selection and acquisition of systems utilizing OFDM or sc-fdm
  • Method and apparatus for efficient selection and acquisition of systems utilizing OFDM or sc-fdm
  • Method and apparatus for efficient selection and acquisition of systems utilizing OFDM or sc-fdm

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Embodiment Construction

[0020] The techniques described herein may be used in various wireless communication systems, broadcast systems, and so on. The terms "system" and "network" are often used interchangeably. The wireless communication system may be a Wireless Wide Area Network (WWAN) system, a Wireless Metropolitan Area Network (WMAN) system, a Wireless Local Area Network (WLAN) system, or the like. For example, these techniques can be used for an OFDMA system using OFDM, an SC-FDMA system using SC-FDM, a multiple access system using OFDM and SC-FDM, a broadcasting system using OFDM, and the like.

[0021] These techniques can also be used for various wireless technologies. For example, these techniques can be used in OFDM-based wireless technologies such as Ultra Mobile Broadband (UMB), Evolved Universal Terrestrial Radio Access (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20 、Flash-OFDM Wait. E-UTRA is part of the Universal Mobile Telecommunications System (UMTS). 3GPP Lo...

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Abstract

Techniques for performing system selection and acquisition are described. In one design, a terminal may obtain at least one system record for at least one system utilizing orthogonal frequency division multiplexing (OFDM) or single-carrier frequency division multiplexing (SC-FDM). Each system record may include system identification information for an associated system and an index for an associated acquisition record. The terminal may also obtain at least one acquisition record for the at least one system. Each acquisition record may include at least one value for at least one configurable system parameter, e.g., FFT size, cyclic prefix length, number of guard subcarriers, etc. The terminal may perform acquisition for the at least one system in accordance with the at least one system record and the at least one acquisition record. The system and acquisition records may be stored in a Preferred Roaming List (PRL) or a Most Recently Used (MRU) list.

Description

[0001] This application claims priority to U.S. Provisional Application No. 60 / 953,948, filed August 3, 2007, entitled "METHOD AND APPARATUSFOR EFFICIENT SELECTION AND ACQUISITION OF OFDMA SYSTEMS," which provisional application is assigned to the assignee of this application, and is incorporated herein by reference. technical field [0002] The present disclosure relates generally to communications and, more particularly, to techniques for performing system selection and acquisition by terminals. Background technique [0003] Wireless communication systems are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and so on. These systems may be multiple-access systems capable of supporting multiple users by sharing available system resources. Examples of these multiple access systems include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Acc...

Claims

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Application Information

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IPC IPC(8): H04L27/26
CPCH04L5/0007H04L27/0008H04L5/0053H04L27/0012H04L27/2647H04L27/2613H04L27/26Y02D30/70
Inventor R·库珀A·汉德卡尔M·M·王K·阿南塔拉曼
Owner QUALCOMM INC