Distributed Ad Hoc Cooperative Routing in Cluster-Based Multihop Networks

I-Te LIN  Iwao SASASE  

Publication
IEICE TRANSACTIONS on Communications   Vol.E94-B   No.2   pp.444-454
Publication Date: 2011/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.444
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
Keyword: 
cooperative diversity,  distributed node selection,  energy savings,  

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Summary: 
Ad Hoc Routing (AHR) was proposed to replace optimal routing in cluster-based multihop networks since it offers lower implementation complexity. However, this complexity reduction comes at the cost of an increase in the required transmission power. In addition, when the conventional distributed relay selection is applied to implement AHR, another increase in the required transmission power occurs due to the receiver selection error. In this paper, Ad Hoc Cooperative Routing (AHCR) that integrates the cooperative transmission with AHR is presented to reduce the difference between the required transmission power of AHR and that of optimal routing. Besides, Distributed Ad Hoc Cooperative Routing (DAHCR) scheme 1 that combines the cooperative transmission with AHR is proposed to reduce the difference between the required transmission power of DAHR and that of AHR. We then address the problem of DAHCR scheme 1 and propose DAHCR scheme 2. Simulation results show that the required transmission power of AHCR and DAHCR scheme 1 is less than that of AHR and DAHR, respectively. In addition, DAHCR scheme 2 further reduces the required transmission power of DAHCR scheme 1. On the other hand, DAHCR scheme 1 increases the complexity by 43% compared to DAHR. Besides, DAHCR scheme 2 increases the complexity by 1.97% compared to DAHCR scheme 1.