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Conference Paper
Gateway discovery and routing in ad hoc networks with NAT-based Internet connectivity
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- Authors
- Jaewook Shin, Haeryong Lee, Jeehyeon Na, Aesoon Park, Sangha Kim
- Issue Date
- 2004-09
- Citation
- Vehicular Technology Conference (VTC) 2004 (Fall), pp.2883-2886
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents gateway discovery and routing schemes for Ad Hoc networks with NAT-based Internet connectivity. To maintain reachable gateway set (RGS) and up-to-date routes to gateways, an extended HELLO (e-HELLO) message is used. A mobile node includes its RGS in the e-HELLO message and periodically broadcasts it to neighbors. On receiving the e-HELLO message, a mobile node updates its RGS and routes to gateways. To prevent on-going sessions from being broken, current default gateway is maintained as long as it is in the RGS and there exists any on-going session. A proxy route reply (p-RREP) message is used to allow a source node to change its default gateway during route discovery. Also, a packet routing scheme for subnet-based Ad Hoc networks with Internet connectivity is presented. The proposed gateway discovery and routing schemes can efficiently support NAT-based Internet connectivity in Ad Hoc networks.
- KSP Keywords
- Ad Hoc Networks, Gateway Discovery, Hello message, Internet connectivity, Mobile node(MN), Packet routing, Route discovery, Route reply, default gateway, routing scheme