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6LoWPAN의 메쉬 라우팅에서 빠른 전송복구를 위한 방법

The Method of a Fast Recovery for Mesh Under in 6LoWPAN

초록/요약

In 6LoWPAN, an adaptation layer is implemented between the network and the data link layers to fragment and reassemble the IPv6 packets which are much larger than the packet size of IEEE 802.15.4 data link layer. Routing in 6LoWPAN can be divided into two ways, based on the layer on which the routing decision is taken. In route-over, IP packet is fragmented and all fragments are sent to the next hop. The next hop checks all fragments for error and create IP packet. It is more reliable than the other way, however, Route-Over increase overheads to reassemble fragments at each hop. The other is mesh-under that transmits all fragments from source to the final destination. In this scheme, for error recovery end-to-end retransmission is done. This Thesis proposes the way to reduce time and energy when the fragmented packets need to be retransmitted by using powerful node, which is located at an appropriate place.

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목차

1. 서론
2. 관련연구
2-1. 6LoWPAN 개요 및 특성
2-2. IEEE 802.15.4 네트워크에서 IPv6 패킷 전송을 위한 방법
2-3. 6LoWPAN에서의 계층적 라우팅 방법
3. Mesh Under의 빠른 전송 복구 기법
3-1. Mesh Under 라우팅의 특성
3-2. Selective NAcknowledge Message를 통한 재전송 기법
3-3. Powerful 노드를 통한 Mesh Under의 전송복구 향상기법
4. 성능분석
4-1. 실험환경
4-2. 제안한 메커니즘의 동작구조
4-3. 실험결과
5. 결론

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