MOBILE COMPUTING Chapter 4 Support for Mobility LITTLE

MOBILE COMPUTING Chapter 4 : Support for Mobility ﺩﻋﻢ ﺍﻟﺘﻨﻘﻞ

LITTLE WORK Little Work only requires changes to the cache manager of the client and detects write conflicts during reintegration. Little Work has no specific tools for reintegration and offers no transaction service. However, Little Work uses more client states to maintain consistency. Connected: This mode needs a continuous high bandwidth as available in typical office environments using, e. g. , a WLAN. Partially connected: If a client has only a lower bandwidth connection, but still has the possibility to communicate continuously, it is referred to as partially connected. Fetch only: If the only network available offers connections on demand, the client goes into the fetch only state. Disconnected: Without any network, the client is disconnected.