Context Caching using Neighbor Graphs for Fast Handoffs in a Wireless Network

dc.contributor.authorMishra, Aruneshen_US
dc.contributor.authorShin, Min-hoen_US
dc.contributor.authorArbaugh, William A.en_US
dc.date.accessioned2004-05-31T23:28:54Z
dc.date.available2004-05-31T23:28:54Z
dc.date.created2003-04en_US
dc.date.issued2003-06-04en_US
dc.description.abstractUser mobility in wireless data networks is increasing because of technological advances, and the desire for voice and multimedia applications. These applications, however, require handoffs between base stations to be fast to maintain the quality of the connections. Previous work on context transfer for fast handoffs has focused on reactive methods, i.e. the context transfer occurs after the mobile station has associated with the next base station or access router. In this paper, we describe the use of a novel and efficient data structure, neighbor graphs, which captures dynamically the mobility topology of a wireless network as a means for pre-positioning the station's context at the potential next base stations-- ensuring that the station's context remains one hop ahead. From experimental and simulation results, we find that the use of neighbor graphs reduces the layer 2 handoff latency due to reassociation by an order of magnitude from 15.37 ms to 1.69 ms, and that the effectiveness of the approach improves dramatically as user mobility increases. (UMIACS-TR-2003-46)en_US
dc.format.extent260601 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/1285
dc.language.isoen_US
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_US
dc.relation.isAvailableAtUniversity of Maryland (College Park, Md.)en_US
dc.relation.isAvailableAtTech Reports in Computer Science and Engineeringen_US
dc.relation.isAvailableAtUMIACS Technical Reportsen_US
dc.relation.ispartofseriesUM Computer Science Department; CS-TR-4477en_US
dc.relation.ispartofseriesUMIACS; UMIACS-TR-2003-46en_US
dc.titleContext Caching using Neighbor Graphs for Fast Handoffs in a Wireless Networken_US
dc.typeTechnical Reporten_US

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