A method and application architecture are proposed for improving the sharing of presence and other information between mobile clients and enterprise servers by determining, in a hybrid peer-topeer (P2P) network based on logical proximity, when a mobile client should share data with other peers in a group, instead of transmitting data to the servers. A "gateway-peer" is responsible for determining when to share data with peers within the group and when to transmit data to the servers. The mobile client shares data with other peers when a particular peer's presence status has changed and transmits data, via a gateway-peer, to the enterprise servers when the overall group's presence has changed. Our method aggregates presence and routes communications via hybrid P2P networking, thus reducing the load on enterprise servers, lessening the occurrences of single points-of-failure and improving the system scalability. A prototype system and a usecase scenario are described to illustrate our design concepts.
We present the architecture of an enterprise mobile service gateway for secure mobile access to distributed, autonomous, and heterogeneous enterprise data and services using browser-based thin-client. Our goal is to address key issues associated with mobile access to enterprise information, while minimizing the cost of service integration by leveraging existing infrastructure and business applications. Our approach achieves high extensibility and interoperability through Web Services based integration scheme and modularized device and gateway adaptation. The security and firewall issues are addressed through the loose coupling between the mobile service gateway and enterprise applications, the separation of mobile proxy and presentation server, and the two-way access control. The combination of home-deck browsing, notification, click-to-dial, and speech access interaction paradigms alleviates the limitations of small keypad and display and brings mobile users rich and personalized user experience. A prototype system has been implemented to demonstrate the significance of cost-effective mobile extension of enterprise services using our approach.
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