Caching strategies in Mobile Computing

The tremendous growth of the mobile users' population coupled with the bandwidth requirements of new cellular services are in contrast to the limited spectrum resources that have been allocated for mobile communications. Three caching strategies have been discussed in this paper. One uses Bit sequence, an adaptive cache invalidation algorithm for client/server mobile environments; the next approach is 1) to use asynchronous invalidation messages and 2) to buffer invalidation messages from servers at the MH’s Home Location Cache (HLC) while the MH is disconnected from the network and redeliver these invalidations to the MH when it gets reconnected; and the last approach is to use Data Replication for Caching. The advantages and the limitation of each paper have been identified. In the past few years, there has been a tremendous surge of research in the area of caching in mobile computing. This paper is an effort to survey the techniques and to classify this research in a few broad areas. Index Terms – Mobile Computing, Caching, Bandwidth, Mobile Hosts, Home Location Cache, Data Replication, MU (Mobile Units), FH (Fixed Hosts).