Dynamic networking method for OFDMA access system

Abstract

The invention discloses a dynamic networking method of a orthogonal frequency division multiple access system, for performing the optimizing configuration on the system resource and advancing the frequency spectrum efficiency of the network, comprising: dividing the district into a plurality of areas by a network controller or a station, distributing the routine sub-carrier for each area in the time of frequency program and reserving the sub-carrier, and performing the dynamic distribution on the reserved sub-carrier between each area according to the change of the operation requirement in the system operating process; determining the ratio of the compensating power and the water injecting power in the time of power planning by the network controller or the station, and distributing the compensating power and the water injecting power for each area, and in the system operating process, the dynamic adjustment is processed according to the disturbing condition of the adjacent area or the change of the operation distribution of the district on the transmitting power of each district.

Description

technical field [0001] The invention relates to a networking technology in the field of digital communication, in particular to a networking technology for an Orthogonal Frequency Division Multiple Access (OFDMA) cellular system. Background technique [0002] Inter-cell interference (ICI for short) is an inherent problem in cellular mobile communication systems, and the traditional solution is to use frequency reuse. In general, several specific choices are adopted for the multiplexing factor, such as 1, 1 / 3, 1 / 7, and so on. When the reuse factor is equal to 1, it means that adjacent cells use the same frequency resources, and at this time, the interference at the edge of the cell is very serious. A lower reuse factor (such as 1 / 3 or 1 / 7) can effectively suppress inter-cell interference, but will result in lower spectrum utilization and cannot meet the growing demand of wireless services. [0003] Due to its good anti-frequency selection characteristics and high spectrum u...

AI Technical Summary

Problems solved by technology

During the standard evolution process of the cellular system, the idea of ​​combining frequency reuse and power planning (allocation) was proposed for the networking scheme, but how to combine it has not yet given a set of clear schemes, but the basic goal is to achieve high performance The power planning (allocation) scheme achieves a relatively compact frequency reuse mode and realizes the efficient use of frequency resources

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