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Titolo:
Optimum cell boundary for uplink and downlink in CDMA systems
Autore:
Takeo, K; Sato, S; Ogawa, A;
Indirizzi:
YRP Mobile Telecommun Key Technol Res Labs, Yokosuka, Kanagawa 2390847, Japan YRP Mobile Telecommun Key Technol Res Labs Yokosuka Kanagawa Japan 2390847 Oki Elect Ind, Wireless Commun Dev Div, Yokosuka, Kanagawa 2390847, Japan Oki Elect Ind Yokosuka Kanagawa Japan 2390847 ka, Kanagawa 2390847, Japan Nagoya Univ, Sch Engn, Dept Informat Elect, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 lect, Nagoya, Aichi 4648603, Japan
Titolo Testata:
IEICE TRANSACTIONS ON COMMUNICATIONS
fascicolo: 4, volume: E83B, anno: 2000,
pagine: 865 - 868
SICI:
0916-8516(200004)E83B:4<865:OCBFUA>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Keywords:
CDMA system; up/downlink; non-uniform traffic; cell structure;
Tipo documento:
Letter
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
7
Recensione:
Indirizzi per estratti:
Indirizzo: Takeo, K YRP Mobile Telecommun Key Technol Res Labs, Yokosuka, Kanagawa 2390847, Japan YRP Mobile Telecommun Key Technol Res Labs Yokosuka Kanagawa Japan 2390847
Citazione:
K. Takeo et al., "Optimum cell boundary for uplink and downlink in CDMA systems", IEICE TR CO, E83B(4), 2000, pp. 865-868

Abstract

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 boundariesare not always coincident for both the two links: the location of the cellboundary is found to migrate according to the loss in orthogonality in thedownlink.

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Documento generato il 12/07/20 alle ore 06:31:57