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Cross-layer Approach for Bio-Inspired Routing and MAC Protocols in Mobile Adhoc Networks
- Alternative Title
- Kwangsoo Kim
- Author(s)
- 김광수
- Alternative Author(s)
- Kwangsoo Kim
- Advisor
- 노병희
- Department
- 일반대학원 컴퓨터공학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2017-02
- Language
- eng
- Keyword
- Bio-inspired networking; Performance Comparison; DESYNC-TDMA; AntHocNet; Cross-layer approach; Path Bandwidth
- Alternative Abstract
- Mobile Ad hoc Networks (MANET) is a key technology of wireless communication among mobile nodes in infrastructure-less environment. Distributed nodes with adaptability on the mobile environment dynamically consist of a network and communicate each other by ad hoc manner. The bio-inspired networking has been studied recently by the conceptual and structural similarities between synecology and network systems. In this dissertation, we compare the performance of combinations between two routing protocols and two MAC protocols. Prior to the performance evaluation, we solve a critical problem on the DESYNC-TDMA protocol. The DESYNC-TDMA has an advantage of simple distributed slot allocation inspired by the nature, but there is a critical disadvantage of split slots by firing message. The basic split slot model has less efficiency for continuous packet transmitting because of wasting of the slots less than the packet size. In this dissertation, we propose a firing offset adjustment scheme to improve the efficiency of slot utilizations, which can manage the slot assigned to each node as a single large block, called the single slot model. The performance analysis models for both the existing and the proposed schemes are also derived. Experimental results show that the proposed method provide better efficiency of slot utilization than the existing schemes without any loss of the nature of the desynchronization. Then we compare the performance of the bio-inspired protocols and the existing MANET protocols. We conducted various aspect of the packet delivery such as the packet delivery ratio and average end to end delay, and normalized routing overhead are the major performance metrics and the slot utilization, traffic composition, routing controls delivery ratio, etc. were given to support the results to describe the reasons why such that performance results are obtained. The scenario of AntHocNet over modified DESYNC-TDMA shows better performance and more stable aspects at the heavier traffic load. For the voice traffic, the combination of AntHocNet and modified Ext-DESYNC shows much stable performance in point of view of PDR, delay, and jitter. We suggest the criteria of the achievable performance of each protocol combination and we expect that the results gives more insight to the researchers to design the protocols and improve the performance in MANET environment. Lastly, we proposed a cross layered scheme to improve the performance of the AntHocNet routing protocol. We designed a path bandwidth of MAC layer and the AntHocNet utilizes the path bandwidth to support the route selection to avoid the bottleneck region. The algorithm was successfully defined and it showed better performance than the original AntHocNet over the modified Ext-DESYNC scenario, which showed better performance in the evaluation. Our proposed scheme improves 3-5% of PDR than basic AntHocNet over DESYNC-TDMA, and it is caused by detouring the bottleneck region effectively.
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- Appears in Collections:
- Graduate School of Ajou University > Department of Computer Engineering > 4. Theses(Ph.D)
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