A method and system are provided for maintaining coherency between a server processor and a client processor that has a cache memory. The server may, for example, be a fixed location mobile unit support station. The client may, for example, be a palmtop computer. The server stores a plurality of ...http://www.google.de/patents/US5706435?utm_source=gb-gplus-sharePatent US5706435 - System for maintaining data coherency in cache memory by periodically broadcasting a single invalidation report from server to clients 
