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System and method for dynamic inter-cell interference coordination

A cell and communication system technology, applied in the direction of transmission path separation device, network planning, signaling distribution, etc., can solve the problems of adjacent eNB interference, high transmission interference, etc.

Active Publication Date: 2015-06-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In addition, since the transmission (i.e., uplink transmission) of UEs operating in the cell edge area, such as UE 130, is usually performed at a higher power level, and these UEs are also close to neighboring cell (e.g., neighboring) eNBs, these transmissions Can cause more interference to neighboring eNBs
For downlink transmission, a UE in a first eNB (e.g., serving eNB) close to a neighboring eNB (i.e., a neighboring eNB) may receive more high interference

Method used

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  • System and method for dynamic inter-cell interference coordination

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[0018] The making and using of the present example embodiments are discussed in detail below. It should be understood, however, that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific scenarios. The example embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0019] The invention will be described with reference to example embodiments in a specific context, namely a 3GPP LTE compliant communication system. However, the present invention is also applicable to other Orthogonal Frequency Division Multiple Access (OFDMA) communication systems, such as communication systems conforming to 3GPP LTE-Advanced, WiMAX, IEEE 802.16, and the like.

[0020] Existing ICIC technologies include:

[0021] - Manual geo-based reu...

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Abstract

A system including a cell controller and a method for dynamic inter-cell interference coordination based on a strong interference neighbor relationship table (SI-NRT) are provided. In the method, the cell controller generates a SI-NRT based on a predefined threshold value and interferences from a plurality of neighbor cells. The cell controller determines whether a cell needs additional high power frequency band and determines whether there is available high power frequency band in the plurality of neighboring cells based on the SI-NRT.

Description

[0001] This application claims U.S. Nonprovisional Patent Application No. 13 / 654,177, filed October 17, 2012, entitled "System and Method for Dynamic Inter-Cell Interference Coordination" priority of the application, the contents of which are incorporated herein by reference. technical field [0002] The present invention relates generally to digital communications, and in particular to ad hoc inter-cell interference coordination ( ICIC) systems and methods. Background technique [0003] Inter-cell interference (ICI) can be viewed as interference in one cell due to a transmission initiated in another cell. Typically, ICI occurs between adjacent cells of a communication system. For example, due to the relatively high power levels of transmissions to and from cell edge users (CEUs), relatively high power transmissions to and from a CEU operating in a first cell are detrimental to neighboring cells utilizing the same operating frequency. This may cause more interference than...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W16/10H04W72/54
CPCH04W16/06H04W72/27H04L5/001H04L5/0007H04L5/0053H04W72/04H04W72/23
Inventor 张立清马江镭
Owner HUAWEI TECH CO LTD
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