Caching location data in mobile networking
- 30 December 2002
- proceedings article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Each Location Directory (LD) provides the infor- mation to locate the forwarding address of a Mobile Host (MH) in a mobile networking system. The LD should be updated when the MH moves from one access zone to another access zone. If an Inter- net Access Point (IAP) (or base station) could cache some useful LD information entries, then, after re- ceiving a packet from an MH in its access zone, the IAP could check its cached LD and make an optimal routing decision. With the LD distributed over the Internet Access Points, we avoid Dogleg Routing because we no longer need to forward the packet to the Mobile Router (MR) where a master copy of the LD is located. In this paper, we investigate how the LD data structure is used, updated, and distributed among Mobile Routers, Internet Access Points, and Mobile Hosts. Furthermore, we present our LD de- sign and implementation in the mobile IP network.Keywords
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