Base station moving track control method based on interference prediction in amorphous cell

Abstract

The invention discloses a base station moving track control method based on interference prediction in an amorphous cell. The method comprises the following steps that an amorphous cell model is created, and at the moment t, a mobile base station MBSi updates an interference region which possibly enters into other mobile base stations by predicting the position of the amorphous cell model at the moment t+T, and defines all mobile base stations in the interference region as an interference base station set Ii; channel rearrangement is carried out on the mobile base stations in the interference base station set Ii to coordinate and process an interference, and meanwhile the interference base station set Ii and the mobile base station MBSi accomplish the channel pre-allocation at the moment t+T for a short-hop link pre-allocation channel at the moment t; the cost of the mobile base station MBSi entering into the interference region is measured according to the change of the call drop rate of the mobile base stations in the interference base station set Ii at the predicted moment t+T; the movement of the mobile base station MBSi is controlled through moving track control strategy. The base station moving track control method based on the interference prediction in the amorphous cell can effectively reduce the possible of the serious performance degradation brought by channel collision in the process of node movement, and the communication serve quality of a mobile user can be guaranteed.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a method for controlling the movement track of a base station based on interference prediction in an amorphous cell. Background technique [0002] Amorphous cells (Amorphous cells) technology is an important direction for the subsequent development of LTE-Advanced, and the germination of related technologies began to appear in 3Gpp. The purpose of amorphous cells characterized by movable nodes is to change the fixed shape of traditional cells, take advantage of the advantages of mobile cooperative nodes, improve system capacity, especially adapt to the dynamic needs of data traffic and unbalanced geographical traffic distribution, and reduce operating costs. Amorphous cells support mobile low-power nodes. Mobile nodes are characterized by low power, low antenna gain, low placement, and small coverage. They are more flexible and cost-effective than macro station d...

AI Technical Summary

Problems solved by technology

However, adding low-power nodes also introduces more inter-node interference, including between macro stations and low-power nodes and between low-power nodes

At the same time, with the introduction of mobile nodes, the channel reuse mode becomes non-fixed, the cell clusters with co-channel interference will change with time, and the mobile nodes will also interfere with each other during the moving process. These characteristics make the amorphous cell Interference coordination in medium is different from traditional cellular networks and is a new challenge

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