| This document compares two protocols, MHVB and NHDP. While both protocols are intended for wireless multi-hop ad hoc networks, they differ fundamentally, both in operation and in purpose: MHVB is a location-based, general-purpose transport protocol for network wide information dissemination, whereas NHDP is a protocol enabling a router to acquire information describing its local network topology up to two hops away. Different as they may seem, these two protocols can, in certain situations, serve the same purpose. For example, MHVB can be employed by an ad hoc routing protocol in place of NHDP, for dissemination of topological information when location information is available. Similarly, NHDP may be used to carry certain location-based information, in place of MHVB. This document examines the viability of NHDP and MHVB for neighborhood discovery, and analyses their performance as such. Aside from the usual set of performance parameters, special interest is accorded to the "freshness" of neighborhood information, obtained through each of the protocols. |
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