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Synchronous and asynchronous interference management

A technology of asynchronous interference and interference management, applied in wireless communication, electrical components, network planning, etc., can solve the problems of poor utilization, fairness control, hiding and exposing node sensitivity.

Inactive Publication Date: 2011-01-05
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, however, such interference mitigation techniques can result in poor utilization, limited fairness control, and susceptibility to hidden and exposed nodes

Method used

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  • Synchronous and asynchronous interference management
  • Synchronous and asynchronous interference management
  • Synchronous and asynchronous interference management

Examples

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Embodiment Construction

[0025] Various aspects of the invention are described below. It should be apparent that the teachings herein can be implemented in various forms and that any specific structure, function, or both disclosed herein is merely representative. Based on the teachings herein one skilled in the art should appreciate that an aspect disclosed herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented or a method practiced using any number of the aspects set forth herein. Additionally, the apparatus may be implemented or the method practiced using other structure, functionality, or both, than or other than one or more of the aspects set forth herein . Furthermore, an aspect may comprise at least one element of a claim. As an example of the above, in some aspects a method of wireless communication includes identifying asynchronous interference, determining a share of re...

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Abstract

Interference management may involve the transmission of interference management messages by wireless nodes that are experiencing interference and appropriate responses by potential interferers that receive the interference management messages. Upon detection of interfering signals, a wireless node may determine whether the signals are from a synchronous interferer or an asynchronous interferer. Based on this determination, the wireless node may use different types of signals to manage the different types of interference. In some aspects, asynchronous interference management may involve backing-off in frequency and / or in time in response to interference signals. Asynchronous interference management may involve transmitting back-off beacons to clear potential interferers from a given carrier. Here, the transmission of beacons by a wireless node may be metered to facilitate fair sharing of communication resources. The interferer may well receive interference management messages and determine that it is an asynchronous or synchronous interferer to an interfered node. The interferer then may determine to react consequently.

Description

technical field [0001] The present application relates generally to wireless communications, and more specifically, but not exclusively, to managing asynchronous interference. Background technique [0002] Wireless communication systems can implement interference management schemes to mitigate interference caused by neighboring wireless devices. For example, in a cellular system, wireless transmissions by a cell phone or base station of a first cell may interfere with communications between cell phones and base stations of neighboring cells. Similarly, in a Wi-Fi network, wireless transmissions by access terminals or access points of a first serving set may interfere with communications between access terminals and access points of adjacent serving sets. [0003] A synchronous communication system may use synchronous interference management messages to control interference on a given channel. Here, the wireless devices in the system may transmit the messages or monitor the...

Claims

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Application Information

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IPC IPC(8): H04W72/08
CPCH04W72/082H04W72/0406H04W74/08H04W16/14H04W72/20H04W72/541H04W72/54
Inventor 加文·伯纳德·霍恩阿什温·桑帕什桑吉瓦·南达
Owner QUALCOMM INC
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