Method for coordinating high power frequency band in long term evolved system

Abstract

The invention discloses a method for coordinating a high power frequency band in a long term evolved system. The method comprises the following steps of: pre-configuring a number range of a static high-power-frequency-band physical resource block (PRB) of all adjacent cells in a cell group; acquiring quantity demand information of the high-power-frequency-band PRB of the adjacent cells according to the preset policy; determining a number boundary of the high-power-frequency-band PRB of the adjacent cells; adjusting the number boundary of the static high-power-frequency-band PRB of each cell according to the quantity demand information of the high-power-frequency-band PRB of the cell group, the number range information of the static high-power-frequency-band PRB and a pre-set coordination algorithm policy; and informing the corresponding adjacent cell of the adjusted number boundary information of the static high-power-frequency-band PRB of the cell. By the method, the conflicting possibility during setting of the high power frequency band of the edge user of the adjacent cells can be reduced, and the interference coordination performance can be improved.

Description

technical field [0001] The present invention relates to Long Term Evolved (LTE, Long Term Evolved) technology, in particular to a method for coordinating a high power frequency band in a Long Term Evolved system. Background technique [0002] LTE technology is an evolution technology of 3G, which improves and enhances the air access technology of 3G, adopts the same frequency networking, Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology and multiple input and multiple output (MIMO, Multi-Input and Multi-Output) technology as its wireless network technology. In the LTE system, due to the use of the same frequency network, the edge users between adjacent cells suffer relatively large interference. At the same time, because the distance between the edge users and the base station is relatively long, the signal energy experiences relatively large fluctuations in the wireless channel. Attenuation, the useful signal strength ...

AI Technical Summary

Problems solved by technology

[0023] It can be seen from the above that in the existing method of coordinating the high-power frequency band in the LTE system to avoid downlink interference, when two or more adjacent cells coordinate and change the PRB number range of the high-power frequency band at the same time, since the adjacent cells do not adopt the unified The frequency band coordination method makes the setting of high-power frequency bands between cells easy to cause conflicts, and inevitably leads to "ping-pong effect". , when it is found that there are overlapping edge user high power frequency bands, the local cell and the adjacent cell will change the PRB number range of the high power frequency band set by themselves at the same time, causing the edge user high power frequency bands of the local cell and the adjacent cell to overlap each other again, As a result, the setting of high-power frequency bands between adjacent cells cannot always reach a stable state, and the performance of interference coordination is greatly reduced; further, the amount of messages transmitted by the X2 interface is caused by the reciprocating message transmission, which affects the overall performance of the LTE system; moreover, for The high-power frequency band of the current cell and the high-power frequency band of the adjacent cell are completely or partially staggered. The existing technology does not provide a specific implementation plan, resulting in uncertainty in implementation.

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