Broadcast Approach for UMTS Mobility Database Recovery
The Universal Mobile Telecommunications System (UMTS) provides high bandwidth packet data services to mobile users. To support mobility management, an MM context is established for every mobile station in its corresponding Serving GPRS Support Node (...
Distributed Mobility Management for Target Tracking in Mobile Sensor Networks
Mobility management is a major challenge in mobile ad hoc networks (MANETs) due in part to the dynamically changing network topologies. For mobile sensor networks that are deployed for surveillance applications, it is important to use a mobility ...
An Identity-Free and On-Demand Routing Scheme against Anonymity Threats in Mobile Ad Hoc Networks
Introducing node mobility into the network also introduces new anonymity threats. This important change of the concept of anonymity has recently attracted attentions in mobile wireless security research. This paper presents identity-free routing and on-...
Adaptive Route Optimization in Hierarchical Mobile IPv6 Networks
By introducing a mobility anchor point (MAP), Hierarchical Mobile IPv6 (HMIPv6) reduces the signaling overhead and handoff latency associated with Mobile IPv6. However, if a mobile node (MN)'s session activity is high and its mobility is relatively low, ...
Nomadic Service Assignment
We consider the problem of dynamically assigning application sessions of mobile users or user groups to service points. Such assignments must balance the trade-off between two conflicting goals. On the one hand, we would like to connect a user to the ...
Structure-Free Data Aggregation in Sensor Networks
Data aggregation protocols can reduce the communication cost, thereby extending the lifetime of sensor networks. Prior works on data aggregation protocols have focused on tree-based or cluster-based structured approaches. Although structured approaches ...
Practical Routing in Delay-Tolerant Networks
Delay-tolerant networks (DTNs) have the potential to interconnect devices in regions that current networking technology cannot reach. To realize the DTN vision, routes must be found over multiple unreliable, intermittently-connected hops. In this paper ...
Resource Allocation and Outage Control for Solar-Powered WLAN Mesh Networks
In this paper, resource allocation and outage control are considered for solar-powered WLAN mesh networks. Solar-powered nodes are a very cost effective option in WLAN mesh deployments where continuous power sources are not practical. In such nodes, the ...
A QoS-Aware and Energy-Conserving Transcoding Proxy Using On-Demand Data Broadcasting
Most research works in transcoding proxies in mobile computing environments are on the basis of the traditional client-server architecture and do not employ the data broadcast technique. In addition, the issues of QoS provision and energy conservation ...
Adaptive Low Power Listening for Wireless Sensor Networks
Most sensor networks require application-specific network-wide performance guarantees, suggesting the need for global and flexible network optimization. The dynamic and nonuniform local states of individual nodes in sensor networks complicate global ...
A Comment on "Multibeam Antenna-Based Topology Control with Directional Power Intensity for Ad Hoc Networks"
An explicit analytical expression is derived for computing the expected number of symmetric neighbors considered by Huang and Shen [1]. The expression involves a well-known special function. The practical advantages of using the analytical expression ...
