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Methods and apparatus for determining, communicating and using information including loading factors for interference control

A technology of load factor, factor, applied in the field of information, can solve the problems of inaccurate control, reduce the total interference level, limit the uplink capacity of the wireless system, etc.

Active Publication Date: 2008-12-10
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, controlling interference in a decentralized manner reduces the overall interference level without precisely controlling those wireless terminals that are the worst sources of interference in the system
[0006] This existing body of interference control methods limits the uplink capacity of wireless systems

Method used

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  • Methods and apparatus for determining, communicating and using information including loading factors for interference control
  • Methods and apparatus for determining, communicating and using information including loading factors for interference control
  • Methods and apparatus for determining, communicating and using information including loading factors for interference control

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Embodiment Construction

[0047] Methods and apparatus for collecting, reporting and using information useful for interference control purposes according to various embodiments will now be described. The method and apparatus of the present invention are well suited for use in wireless multiple-access (eg, multi-user) communication systems. The system may be implemented as an OFDM system, a CDMA system, or other types of wireless systems in which signal interference from transmissions from one or more transmitters (eg, neighboring base stations) is a concern.

[0048] Exemplary embodiments of the present invention are described below in the context of the cellular wireless data communication system 100 of the present invention shown in FIG. 1 . Although the invention is illustrated using an exemplary cellular wireless system, the scope of the invention is broader than the examples and is generally applicable to many other wireless communication systems as well.

[0049] In wireless data communication s...

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Abstract

A wireless terminal receives and measures broadcast reference signals, e.g., beacon and / or pilot signals, transmitted from a plurality of base station attachment points. The wireless terminal monitors for and attempts to recover broadcast loading factor information corresponding to attachment points. The wireless terminal generates and transmits an interference report to a current attachment point, the report based on the results of a measured received reference signal from the current attachment point, a measured received reference signal from each of one or more different attachment points, and uplink loading factor information. In the absence of a successfully recovered broadcast uplink loading factor corresponding to an attachment point, the wireless terminal uses a default value for that loading factor. Generated interference reports are based on beacon signal measurements and uplink loading factors, pilot signal measurements and uplink loading factors, or a mixture of beacon and pilot signal measurements and uplink loading factors.

Description

[0001] Claim of priority under 35 U.S.C. §119 [0002] This application asserts U.S. Provisional Patent Application No. S.N. 60 / 792,128, filed April 14, 2006, entitled "Method and Apparatus for Determining, Communicating, and Using Information Usable for Interference Control Purposes ( METHODS AND APPARATUS FOR DETERMINING, COMMUNICATING AND USINGINFORMATION WHICH CAN BE USED FOR INTERFERENCE CONTROL PURPOSES)” and is a continuation-in-part of U.S. Patent Application No. 11 / 251,069 filed on October 14, 2005 and filed in 2005 Continuation-in-Part of U.S. Patent Application Serial No. S.N. 11 / 302,729, filed December 14, each of which is expressly incorporated herein by reference. technical field [0003] The present invention relates to wireless communication systems, and more particularly to methods and apparatus for collecting, measuring, reporting and / or using information useful for interference control purposes in wireless communication systems. Background technique [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04B17/345H04B17/382
Inventor 拉吉夫·拉罗亚厉隽怿桑迪普·拉恩冈穆拉里·斯里尼瓦桑普拉尚斯·汉德阿纳布·达斯
Owner QUALCOMM INC