Method for coordinating interference in relay wireless communication network district

Abstract

The invention discloses a method for interference coordination in cells of a trunking wireless communication network, wherein, the method for interference coordination in the base station of the network comprises the following steps: A. the base station selects a limited interference source; B. the overlay area of the base station is divided into three layers of a non-interference area, a transition area and a limited interference source area; C. channel loss compensation factors and time frequency resources are respectively configured for all the layers of the base station; D. the intensity of the current strongest interference signal is measured; and E. the base station carries out adjustment to the transmitting power of a relay station and the user terminal thereof. The method limits the interference in the cells to be in a certain range, thus effectively solving the problem that the system expenditure in interference coordination in the cells is overlarge, the time delay of the round trip is overlong, or when the load is heavier or is full, the problem that the occupied time frequency resource of the interference source is difficult to be orthogonal is difficult to be guaranteed and the like.

Description

technical field [0001] The present invention relates to a wireless communication network, in particular to an interference coordination method in a cell of a wireless communication network with RS (Relay Station, relay station). Background technique [0002] In the next-generation broadband wireless communication network, especially in the relay wireless communication network with RS, solving the interference between the BS (base station) and all RSs in the cell becomes the key to improving the UT (user terminal) in the cell and in the RS coverage area. ) throughput and the average UT throughput is a key factor and faces severe challenges. [0003] At present, in IEEE 802.16j, IMT-Advanced, and WINNER (Wireless World Initiative New Radio), methods such as interference randomization, interference coordination, and interference cancellation are proposed to solve the problem of cell interference. In LTE (Long Term Evolution, the long-term technical evolution of the third gener...

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Problems solved by technology

[0004] For a relay network, all relay stations in the network are equivalent to independent virtual base stations. Therefore, in the relay network, the interference problem between the base stations in the relay network and all relay stations must be considered. At this time, if the The partial power control and path loss compensation method of the above-mentioned layered structure solves the interference in the cell, but it is still difficult to ensure that the time-frequency resources used by all adjacent cells remain orthogonal through scheduling when the load is relatively heavy. At the same time, it will also bring about the problem of decreased scheduling flexibility and reduced spectrum utilization during path loss compensation, which directly leads to the decrease of UT throughput and UT average throughput at the cell edge

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