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Method and apparatus for using load indication for interference mitigation in a wireless communication system

A technology of load indication and interference suppression, applied in the field of communication, can solve problems such as high overhead

Inactive Publication Date: 2010-08-11
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these interference mitigation schemes require high overhead for the exchange of signaling messages between the base station and the terminal in order to achieve interference mitigation

Method used

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  • Method and apparatus for using load indication for interference mitigation in a wireless communication system
  • Method and apparatus for using load indication for interference mitigation in a wireless communication system
  • Method and apparatus for using load indication for interference mitigation in a wireless communication system

Examples

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Embodiment Construction

[0020] The techniques described herein 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 so on. UTRA includes Wideband-CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95 and IS-856 standards. A TDMA system can implement a radio technology such as Global System for Mobile Communications (GSM). The OFDMA system can implement such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE802.16 (WiMAX), IEEE 802.20, Flash- and other wireless technologies. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) is a new version of UMTS that uses E-UTRA, which employs OFDMA on the downlink and SC-FDMA on the uplink. UTRA, E-UTRA, UMTS, LTE and ...

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Abstract

Techniques for mitigating interference in a wireless communication system are described. In an aspect, a base station may periodically broadcast a load indication to convey information such as whether or not to use interference mitigation, which interference mitigation scheme to use, resources to apply interference mitigation, duration of interference mitigation, etc. Terminals may receive the load indication and perform interference mitigation as indicated by the load indication. In one design, a terminal may receive a load indication from a base station that the terminal desires to access. The terminal may determine whether to obtain reserved resources having reduced interference based on the load indication. In another design, a terminal may receive a load indication from a neighbor base station. The terminal may determine whether to reduce its transmit power or to request for resources prior to transmission based on the load indication.

Description

[0001] This application claims U.S. Provisional Application No. 60 / 971,219, filed September 10, 2007, entitled "SUPERFRAME PREAMBLE WITH LOAD INDICATION," and INDICATION", U.S. Provisional Application No. 61 / 014,668, both of which have been assigned to the assignee of the present application and are hereby expressly incorporated by reference. technical field [0002] The present invention relates generally to communications and, more particularly, to techniques for suppressing interference in wireless systems. Background technique [0003] Wireless communication networks are widely used to provide various communication content, such as voice, video, packet data, messaging, broadcast, and so on. These wireless systems may be multiple-access systems, capable of supporting multiple users by sharing available network resources. Examples of such multiple access systems include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/54
CPCH04W48/08H04W16/16H04W52/343H04W88/04Y02B60/50H04W52/247H04W84/045H04W52/24H04W72/54
Inventor A·阿格拉瓦尔季庭方A·汉德卡尔
Owner QUALCOMM INC
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