Consistency challenges of service discovery in mobile ad hoc networks

Emerging “urban” ad hoc networks resulting from a large number of individual WLAN users challenge the way users could explore and interact with their physical surroundings. Robust and efficient service discovery and routing protocols in such networks are a necessary ingredient. Although a lightweight service discovery proposal integrated with ad hoc routing exists, an implementation and performance evaluation with respect to overhead and correctness have so far been missing. Moreover, the different service providers in an urban scenario, which (more or less) frequently and actively change their status, demand more flexible handling of cached information on neighboring providers than what is currently proposed. We therefore contribute mechanisms that maintain cache consistency and show that explicitly removing cache entries on existing neighboring providers is well invested effort. We finally evaluate whether ad hoc network latency can implicitly help our protocol in retrieving ...

• Type: Conference
• Year: 2004
• Where: MSWIM
• Authors: Christian Frank, Holger Karl
• Keywords: Ad Hoc, Ad Hoc Network, Modelling And Simulation, MSWIM 2004, Service Discovery