Method for strengthening interference coordination in layered heterogeneous network of mobile communication system

Abstract

The invention discloses a method for strengthening interference coordination in the layered heterogeneous network of a mobile communication system, which is characterized by comprising the following steps: firstly, defining a partially loaded subframe (PLS) format; obtaining a site collection which needs to be coordinated by aiming at a macro cell+Picocell scene in an LTE-A (Long Term Evolution-Advanced) heterogeneous network; and finally, coordinating sites in the collection by users. The method can be used for coordinating various types of site collections because the method is free from limitation of different types of site collections in the layered heterogeneous network to obtain the effect on simultaneously avoiding cross-layer interference and same-layer interference; according to the load situation in the cell, adopted resource can be flexibly regulated to respond environment variation and load variation in the cell in time.

Description

technical field [0001] The patent of the invention belongs to the field of mobile communication, and specifically relates to the problem of interference coordination under the coexistence of macro stations and small stations in the layered heterogeneous network of the fourth generation mobile communication system. Background technique [0002] The fourth-generation mobile communication system LTE-A (Long Term Evolution-Advanced) deploys small cells on the basis of macro cells (covered by macro stations) in cellular network topology. Small cells are composed of various types of low power nodes (LPN, Low Power Node), such as Micro stations, Pico stations, and Femto stations (collectively referred to as small stations) coverage, to achieve short-distance and small-area coverage, and optimize indoor and hotspot scenarios and cell boundaries. These low-power nodes are completely under the coverage of the macro cell (Macrocell), forming another layer of topology on top of the exis...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the existing inter-cell interference coordination method cannot be applied in the macro cell + pico cell scenario in the LTE-A heterogeneous network, the present invention proposes a partially loaded subframe (PLS, Partially Loaded Subframe) format, through flexible Method of subframe configuration to reduce downlink mutual interference between different types of stations

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