Method and system for coordinating interference between districts

Abstract

The invention discloses an inter-cell interference coordination method, which comprises the following steps: step 1, the base station sets a first threshold for dividing the internal layer area and the transition area, and a second threshold for dividing the transition area and the external layer area, and sets the link loss compensation factor and time frequency resource of every divided area; step 2, the user terminal of the cell measures the intensity of the most intensive interference signal, and reports the measuring result to the base station; step 3, the base station determines the area including the user terminal according to the measuring result, determining the link loss compensation factor of the user terminal according to the area including the user terminal, calculating the user terminal emission power, and sending the calculating result to the user terminal; step 4, the user terminal receives the calculating result, and emits according to the calculating result. The method in the invention can coordinate inter-cell interference, and increase cell edge user terminal throughput and user terminal average throughput.

Description

technical field [0001] The present invention relates to the field of wireless communication networks, in particular to a method and system for inter-cell interference coordination. Background technique [0002] In the next-generation broadband wireless communication network, solving inter-cell interference in the wireless communication network becomes a key factor for improving inter-cell user terminal throughput and average user terminal throughput, and faces severe challenges. [0003] At present, IEEE 802.16j, IMT-Advanced (advanced international mobile communication) and WINNER (Wireless World Initiative New Radio, Wireless World Initiative New Radio) propose to use interference randomization, interference coordination, and interference elimination methods to solve inter-cell interference question. In LTE (Long Term Evolution, Long Term Evolution), it is proposed that according to the strongest interference level of all adjacent cells received by the user terminal, the ...

AI Technical Summary

Problems solved by technology

However, when the wireless communication network is heavily loaded, it is difficult to ensure that the time-frequency resources used by all adjacent cells are orthogonal through scheduling, resulting in inter-cell interference

Although setting the sensitive area can make the part of the time-frequency resources used in adjacent cells with the highest collision probability completely orthogonal, but it reduces the flexibility of scheduling and reduces the spectrum utilization during partial power control and path loss compensation. The throughput of the user terminal at the edge of the cell and the average throughput of the user terminal decrease

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