A cross-layer middleware for context-aware cooperative application on mobile ad hoc peer-to-peer network

• We use two IPv6 characteristics: routing header and anycast.
• We propose a cross-layer middleware to integrate DHT-based lookup, anycast query, P2P delivery, and IPv6 routing.
• The proposal supports the context-aware cooperative application to overcome the frequent churn and high mobility problems.
• The proposed scheme shortens response delay, minimizes query duplication, improves routing efficiency, heightens overlay proximity, shortens download delay, heightens playback continuity, and reduces signaling overhead.

Mobile ad hoc peer-to-peer (P2P) applications become popular for providing the file sharing, voice communicating, and video streaming services due to entertainments and disaster recovery. However, both the topology of wireless network and the overlay of P2P network are dynamic, so the middleware is proposed to integrate such architectures of service-oriented applications. Therefore, we propose context-aware cooperative application (CACA) to overcome the frequent churn and high mobility problems. CACA proposes a cross-layer middleware to integrate DHT-based lookup, anycast query, and P2P delivery via the IPv6 routing header. Through anycast query, the response delay can be shortened and the query duplication can be minimized. Via IPv6 routing header, the delivery efficiency can be improved. Through the cross-layer design, the finger table in overlay layer is combined with the routing table in network layer to heighten proximity. The simulation results demonstrate that CACA has the outstanding performances of short download delay, high playback continuity, and low signaling overhead in mobile ad hoc network.