Distributed Dynamic Channel Assignment for Multi-Hop DS-CDMA Virtual Cellular Network

Eisuke KUDOH
Fumiyuki ADACHI

IEICE TRANSACTIONS on Communications   Vol.E88-B    No.6    pp.2525-2531
Publication Date: 2005/06/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.6.2525
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
virtual cellular network,  multi-hop network,  adhoc network,  routing,  dynamic channel assignment,  channel segregation,  

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In this paper, the channel segregation dynamic channel allocation (CS-DCA) scheme is applied to a multi-hop DS-CDMA virtual cellular network (VCN). After all multi-hop routes are constructed over distributed wireless ports in a virtual cell, the CS-DCA is carried out to allocate the channels to multi-hop up and down links. Each wireless port is equipped with a channel priority table. The transmit wireless port of each link initiates the CS-DCA procedure and selects a channel among available ones using its channel priority table to check. In this paper, the channel allocation failure rate is evaluated by computer simulation. It is shown that CS-DCA reduces remarkably the failure rate compared to FCA. The impact of propagation parameters on the failure rate is discussed.