Optimum Cell Boundary for Uplink and Downlink in CDMA Systems
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概要
- 論文の詳細を見る
In order to maintain the communications quality at a target level, signal-to-interference ratio (SIR)-based transmission power control methods have been developed in CDMA cellular systems. These power control methods, however, do not necessarily improve system efficiency when there is a large geographic deviation in traffic because they only control power levels. A shift in the cell boundary can control traffic balance between cells. In this paper, we evaluate the optimum location of the cell boundary and the power levels when a mobile station adaptively selects a base station (BS) for each of uplink and downlink under non-uniform traffic. Because of the asymmetry in system structure between uplink and downlink, the optimum cell boundaries are not always coincident for both the tow links; the location of the cell boundary is found to migrate according to the loss in orthogonality in the downlink.
- 社団法人電子情報通信学会の論文
- 2000-04-25
著者
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Ogawa Akira
The Department Of Information Engineering Meijo University
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OGAWA Akira
The Author is with the School of Science and Technology, Meijo University
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TAKEO Kohji
The author is with YRP Mobile Telecommunications Key Technology Research Laboratories
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SATO Shinichi
The author is with Wireless Communications Development Division, Oki Electric Industry
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Sato S
The Author Is With Wireless Communications Development Division Oki Electric Industry
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Takeo K
The Author Is With Yrp Mobile Telecommunications Key Technology Research Laboratories
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