In this paper, a simplified model for user mobility behavior for wireless networks is developed. The model takes into account speed and direction of motion, the two major characteristics of user mobility. A user mobility simulation based on the model is developed, and its results are compared with those in published work. The transient performance metrics of a mobile network are analyzed in ter...

Handoff management is a key issue in mobile network to provide an efficient and low-cost service. Providing seamless connectivity in high speed data networks is a challenge due to user mobility and varying user traffic patterns. The major challenges with high user mobility are (1) Frequent handoff which causes call dropping (2) Unavailability of resources in the target base station which also m...

Human Mobility has attracted attentions from different fields of studies such as epidemic modeling, traffic engineering, traffic prediction and urban planning. In this survey we review major characteristics of human mobility studies including from trajectory-based studies to studies using graph and network theory. In trajectory-based studies statistical measures such as jump length distribution...

This paper proposes a restoration scheme based on mobility learning and prediction in the presence of the failure of mobility databases in personal communication systems (PCSs). In PCSs, mobility databases must maintain the current location information of users to provide a fast connection for them. However, the malfunction of mobility databases may cause some location information to be lost. A...

This paper provides a novel home-proxy based framework which integrates the mobility management and QoS management techniques that have been adopted in the Internet environment. It then combines a mobility prediction and resource pre-allocation scheme with the above home-proxy based framework to provide an efficient mobility management environment capable of supporting real-time services. The v...

The increasing success of mobile-enabled, embedded devices is stressing the need for software architectures facing mobility-related issues. This paper proposes a simple yet effective mobility management scheme to ease the development of mobile, ubiquitous applications. The scheme seamlessly handles handoff events and provides ubiquitous applications with both location-awareness and mobility pre...

This paper presents an approach to predict energy consumption in mobility systems for wheeled ground robots. The energy autonomy is a critical problem for various battery-powered systems. Specifically, the consumption prediction in mobility systems, which is difficult to obtain due to its complex interactivity, can be used to improve energy efficiency. To address this problem, a self-supervised...

We present a framework that uses both prefetching and location prediction together to effectively lower the cost and total access time for mobile web users. A new prefetching algorithm is presented that dynamically predicts the likelihood of the mobile moving into a different network. We examine a heterogeneous system composed of two networks: a cheaper and faster WLAN network, and a slower, mo...

Despite the long history of modelling human mobility, we continue to lack a highly accurate approach with low data requirements for predicting mobility patterns in cities. Here, we present a population-weighted opportunities model without any adjustable parameters to capture the underlying driving force accounting for human mobility patterns at the city scale. We use various mobility data colle...

Next Generation Networks (3G & beyond) will support real-time multimedia applications through traditional wide-area networking concepts as well as hot-spot (WLAN) and ad hoc networking concepts. In order to fulfil the vision of Next Generation Networks a method of maintaining a real-time flow despite frequent topology changes and irregularity in user movement is required. Mobility Prediction ha...