Authors
Ramon Caceres, Venkata N Padmanabhan
Description
Future internetworks will include large numbersof portable devices moving among small wireless cells. We propose a hierarchical mobility management scheme for such networks. Our scheme exploits locality in user mobility to restrict hando processing to the vicinity of a mobile node. It thus reduces hando latency and the load on the internetwork. Our design is based on the Internet Protocol (IP) and is compatible with the Mobile IP standard. We also present experimental results for the lowest level of the hierarchy. We implemented our local hando mechanism on Unix-based portable computers and base stations, and evaluated its performance on a WaveLAN network. These experiments showthatourhandosarefastenoughtoavoid noticeabledisruptions in interactive audio trac. For example, our hando protocol completes less than 10 milliseconds after a mobile node initiates it. Our mechanism also recovers from …
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