DSR 기반의 무선 에드 혹 네트워크에서 계층적인 라우팅 캐쉬를 이용한 지역 경로 복구 = A Local Route Repair scheme using Hierarchical Routing Caches in DSR based Ad Hoc Networks

다국어 초록 (Multilingual Abstract)

Compared with wired networks, wireless networks are usually limited bandwidth, QoS, and battery power, so that their routing protocols should have efficient routing protocols between mobile hosts. In Ad Hoc Networks, a connection frequently breaks due to the irregular movement of mobile hosts. When a link in DSR (Dynamic Source Routing) is broken, the upstream node of the broken link sends RERR message to the source node. In this paper, I propose an efficient route maintenance scheme using hierarchical routing caches. The proposed scheme, named as HDSR, applies to all nodes in DSR-based Ad Hoc networks. The HDSR scheme can efficiently recover some link breaks without relying on the existing DSR route maintenance scheme, thereby reducing the repair time and data packet transmission time. The simulation results show that the proposed scheme can reduce the repair time efficiently and thus, reduce the overall packet delivery time.