TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
An Exposed-Terminal-Eliminated Dual-Channel MAC Protocol for Exploiting Concurrent Transmissions in Multihop Wireless Networks |
| 영문제목(English Title) |
An Exposed-Terminal-Eliminated Dual-Channel MAC Protocol for Exploiting Concurrent Transmissions in Multihop Wireless Networks |
| 저자(Author) |
Kai Liu
Yupeng Zhang
Feng Liu
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| 원문수록처(Citation) |
VOL 08 NO. 03 PP. 0778 ~ 0798 (2014. 03) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
This paper proposes a novel exposed-terminal-eliminated medium access control (ETE-MAC) protocol by combining channel reservation, collision avoidance and concurrent transmissions to improve multi-access performance of the multihop wireless networks. Based on the proposed slot scheduling scheme, each node senses the control channel (CCH) or the data channel (DCH) to accurately determine whether it can send or receive the corresponding packets without collisions. Slot reservation on the CCH can be simultaneously executed with data packet transmissions on the DCH. Therefore, it resolves the hidden-terminal type and the exposed-terminal type problems efficiently, and obtains more spatial reuse of channel resources. Concurrent packet transmissions without extra network overheads are maximized. An analytical model combining Markov model and M/G/1 queuing theory is proposed to analyze its performance. The performance comparison between analysis and simulation shows that the analytical model is highly accurate. Finally, simulation results show that, the proposed protocol obviously outperforms the link-directionality-based dual-channel MAC protocol (DCP) and WiFlex in terms of the network throughput and the average packet delay.
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| 키워드(Keyword) |
Multihop wireless networks
medium access control
dual-channel
reservation
hidden-terminal type
exposed-terminal type problems
collision avoidance
concurrent transmission
performance analysis
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