Increasing Reliability in Cable-Free Radio LANs Low Level Forwarding in HIPERLAN |
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Authors: | Jacquet Philippe Minet Pascale Mühlethaler Paul Rivierre Nicolas |
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Affiliation: | (1) INRIA, BP 105, 78153 Le Chesnay Cédex, France |
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Abstract: | Radio LANs are emerging in the computing world. They are supported by distinct configurations: on the one hand radio LANs with base stations and a wired backbone, on the other hand radio LANs implementing Intra-forwarding. Adding a new node in a radio LAN with Intra-forwarding, increases the reliability, while this reliability decreases with ad hoc or hub configurations. This advantage of Intra-forwarding is quantified. Intra-forwarding, as defined in the HIPERLAN standard, is based on a hop-by-hop policy and link check procedures. It is shown how point-to-point packets and broadcast packets are forwarded. The three basic components of Intra-forwarding needed to build and update the Intra-forwarding database are described. The originality of this approach is the use of multipoint relays which enable better scalability. The correctness of the Intra-forwarding protocol is proved and its cost is evaluated. |
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Keywords: | HIPERLAN topology connectivity reliability forwarding hop-by-hop routing |
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