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Proceedings Paper

Cell extension for fast moving users in a RoF network
Author(s): Chunyong Yang; Deming Liu
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Paper Abstract

Radio-over-Fiber networks providing millimeter-waveband (mm-waveband) signals using wavelength-divisionmultiplexing techniques are foreseen as the next paradigm to provide broadband wireless access services.Millimeter wave band operating RoF provides high bandwidth due to its high frequency feature, so it is perfectly adapted to these system. But a limited cell range with propagation losses leads to frequent handovers when hopping from one remote antenna units to another causes numerous packet losses strongly, thus to reduce the whole system bandwidth. Moving cells concept is introduced for avoiding the classical handover time. Nevertheless, frequent switching in optical switches is inevitable in the resolution which also result in dropping calls. Therefore, a concept of cells extension to allievate the burden of handover in contral station is proposed. However, since the adjacent RAUs employ the same channel in an extensive larger cell, co-channel interference exists in the extension scheme. To avoid this, a time slot distributor in the star-tree architecture of RoF network to support the moving cell extension is proposed and a MAC protocol is designed for this concept to avoid the co-channel interference.

Paper Details

Date Published: 23 February 2009
PDF: 4 pages
Proc. SPIE 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors, 72781E (23 February 2009); doi: 10.1117/12.823294
Show Author Affiliations
Chunyong Yang, South-Central Univ. for Nationalities (China)
Deming Liu, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 7278:
Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors
Dieter Stefan Jäger; Deming Liu; Ping Shum, Editor(s)

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