The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Bio-Inspired Resource Allocation Scheme for Multi-Hop Networks

멀티홉 네트워크에서 생체모방 기반 자원할당 기법

  • Received : 2015.09.01
  • Accepted : 2015.10.06
  • Published : 2015.10.31
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Abstract

Recently, researches on resource allocation algorithms operating in a distributed way are widely conducted because of the increasing number of network nodes and the rapidly changing the network environment. In this paper, we propose Multi-Hop DESYNC(MH DESYNC), that is bio-inspired TDMA-based resource allocation scheme operating in a distributed manner in multi-hop networks. In this paper, we define a frame structure for the proposed MH DESYNC algorithm and firing message structure which is a reference for resource allocation and propose the related operating procedures. We show that MH DSYNC can resolve the hidden-node problem effectively and verify that each node shares resources fairly among its neighboring nodes. Through simulation evaluations, it is shown that MH DESYNC algorithm works well in a multi-hop networks. Furthermore, results show that MH DESYNC algorithm achieves better performance than CSMA/CA algorithm in terms of throughput.

최근 네트워크 단말 수가 증가하고 네트워크 환경이 빠르게 변함에 따라 분산처리 방식의 자원할당 기법이 많이 연구되고 있다. 본 논문에서는 멀티 홉 환경에서 생체모방 알고리즘을 활용하여 분산적인 방법으로 TDMA 자원을 할당받는 Multi-Hop DESYNC 알고리즘(MH DESYNC)을 제안한다. 본 논문에서는 이를 위한 프레임 구조와 자원 할당의 기준 척도가 되는 firing 메시지 구조를 정의하고 관련된 동작 절차를 제안한다. 이를 통해 멀티 홉 환경에서 발생할 수 있는 hidden-node 문제와 firing 신호의 충돌이 발생하였을 때, 충돌 문제를 해결하는 방안을 제시하였다. 모의실험을 통해 멀티 홉 환경에서 제안한 MH DESYNC 알고리즘이 hidden-node 문제를 효과적으로 해결하고 각 노드가 주위 노드와 공평하게 자원을 할당하고 CSMA/CA 알고리즘 보다 데이터 전송율 측면에서 우수한 성능을 나타내는 것을 확인 하였다.

Keywords

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