Proposed Multi-Channel Access Schemes for Hot-Spot Undererlaying CDMA Cellular Systems

概要

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According to Wu[1], system performance and capacity degrade due to the co-channel interference between microcells(i.e.hot-spot)and macrocells in a hierarchical structure if the same channel is used. In order to avoid co-channel interference, different channels are assigned for macrocells and microcells. That means multi channels exist in the hierarchical structure. However, hard handoff is necessary for a mobile station(MS)across the boundary of microcell and macrocell because both of them use different channels. Based on a hot-spot overlaying environment, this paper proposes multi-channel access schemes to avoid serious interference between hot-spot and macrocell and thus the capacities are increased. Besides, the same channel can be used in macrocell and hot-spot simultaneously. It makes soft handoff workable and improves the system performance.
社団法人電子情報通信学会の論文
1998-04-25