Coordinating Mobile Agents through the Broadcast Channel

Coordinating mobile agents through the Broadcast Channe

An Overview of Group Key Management Issues in IEEE 802.16e Networks

The computer industry has defined the IEEE 802.16 family of standards that will enable mobile devices to access a broadband network as an alternative to digital subscriber line technology. As the mobile devices join and leave a network, security measures must be taken to ensure the safety of the network against unauthorized usage by encryption and group key management. IEEE 802.16e uses Multica...

Broadcast Data Allocation for Efficient Access of Multiple Data Items in Mobile Environments

The issue of data broadcast has received much attention in mobile computing. A periodic broadcast of frequently requested data can reduce the workload of the up-link channel and facilitate data access for the mobile user. Many approaches have been proposed to schedule data items for broadcasting. However, the issues of accessing multiple data items on the broadcast channel are less discussed. T...

Multi-channel Mobile Access to Web Services

To support wireless-oriented services, a new generation of Web services called Mobile services (M-services) has emerged. M-services provide mobile users access to services through wireless networks. One of the important issues in M-service environment is how to discover and access M-services efficiently. In this dissertation, we propose time and power efficient access methods for M-services. We...

Using Swarm Intelligence to Broadcast Messages in Highly Mobile Ad Hoc Networks

This paper explores the potential for the efficient broadcasting of messages in highly mobile multihop ad hoc networks by treating the nodes in the network as autonomous agents for which only a simple set of rules governing the passing of messages from one node to another is defined. The general problem presented by highly mobile systems is one of coordinating communication between nodes in set...