Disturbance coordination method and device of OFDMA system

An orthogonal frequency division multiple access and interference coordination technology, applied in multi-frequency code systems, signal channels, etc., can solve the problems of reducing system efficiency, not considering gain, and difficult implementation, so as to improve performance, reduce signaling overhead, Effect of Improving Cell Edge Service Performance

Inactive Publication Date: 2007-08-01
HUAWEI TECH CO LTD
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Problems solved by technology

However, semi-static interference coordination in the time domain and frequency domain requires complete synchronization between OFDMA system cells, which is not easy to achieve
In addition, in the two methods in this solution, neither the uplink nor the downlink direction considers the gains brought about by restricting the transmit power of users in the cell (or sector), and the resources are frequently reconfigured according to the load distribution in the system. Partition increases the signaling overhead of the system and reduces the efficiency of the system

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  • Disturbance coordination method and device of OFDMA system

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[0045] Below we will describe in detail the best implementation of the present invention with reference to the accompanying drawings. First of all, it should be pointed out that the meanings of the terms, words and claims used in the present invention should not be limited to their literal and ordinary meanings, but also include meanings and concepts that are consistent with the technology of the present invention. This is because It is up to us, as inventors, to define terms appropriately in order to best describe our inventions. Therefore, the configurations given in this specification and the accompanying drawings are only preferred implementations of the present invention, rather than enumerating all technical characteristics of the present invention. We should realize that there may be various equivalent solutions or modified solutions that can realize the similar functions of the solutions in the present invention.

[0046] FIG. 3 is a flow chart of the first embodiment...

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Abstract

The invention provides an interference coordination method of orthogonal frequency-division multiple access system, the method includes: in all transmission block chunk, every plot selects parts of transmission blocks as reserved resource; said plot is divided into inner layer and outer layer; when users in plot transmit or receive data, based on the area, transmission block chunk can be distributed to said user. The invention also provides an interference coordination device of orthogonal frequency-division multiple access system. The invention adopts scheme of reserving resource and adjusting reserved resource to make the performance of edge service of plot increased when the loads of OFDMA system changes greatly in plots. And, the adjustment of reserved resource just aiming at large-amplitude changes of load, the command cost of system which is used in interference coordination can be decreased effectively.

Description

technical field [0001] The present invention relates to the orthogonal frequency division multiple access technology, in particular to the interference coordination method of the orthogonal frequency division multiple access system. Background technique [0002] The 3GPP (Third Generation Partnership Project) technical report [1] put forward three requirements for the performance of LTE (Long Term Evolution System): (1) cell edge bit rate; (2) system throughput; (3) in PS (Packet switching domain) Effective support for many different services (such as VoIP, video conferencing, etc.). [0003] In order to meet these requirements and improve the spectrum utilization of the system, the LTE multiple access schemes in the uplink and downlink directions should be orthogonal, which is well reflected in the 3GPP technical report [2]. Whether in the uplink or the downlink, OFDMA (Orthogonal Frequency Division Multiple Access System) is one of the alternatives. [0004] The frequenc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/02H04L27/26
Inventor 陈林红朱仁水张兴王文博
Owner HUAWEI TECH CO LTD
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