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The relation of PIM power versus input power is presented, and the third order PIM product is predicted. The agreeable PIM power versus input power curve is obtained by regulating the polynomial coefficients. Comparing fitting results with the measured data for cable connectors in mobile communication systems, we verify the correctness and feasibility of the proposed scheme. Moreover, the time dependency...
The high mobility of VANET makes information exchange across the network excessively difficult. Traditional approaches designed for stationary networks are not applicable due to the high dynamics among the nodes. Applying the routing techniques tailored for general mobile networks inevitably brings huge traffic burden to the crowded urban VANET and leads to low efficiency. To make the information...
Wheeled inverted pendulum (WIP) models have been widely used in the field of autonomous robotics and intelligent vehicles. A novel transportation system, WIP-car is proposed in this paper, which is composed of a mobile wheeled inverted pendulum system, a driven chair, an acceleration pedal and a deceleration pedal, which are used to drive the chair forward or backward such that the car can be accelerated...
In this work, we present a monitor and rescue system utilizing hybrid networks which is a integration of stationary sensor networks and mobile sensor networks: stationary sensor networks comprised of large numbers of small, simple, and inexpensive wireless sensors, and the mobile sensor network contains a set of mobile sensors (robots). The static sensors in our network have “monitoring” ability,...
Effectively use of intelligent transport system (ITS) can not only improve vehicular safety but also enhance the efficiency of current transport system and driving comfort. The key point of ITS is how vehicles communicate with each other, which means we need a set of communication protocols to facilitate moving vehicles. For this reason, IEEE developed WAVE (Wireless Access in Vehicular Environment)...
In virtue of its widespread application scenarios, especially in battlefield communication, disaster rescue, satellite and deep-space transmission, Delay-disruption Tolerant Network (hereinafter referred to as DTN) has become one of the most attractive focuses in research for future Internet. Due to the intermittent connectivity, mobility of nodes, signal interference, jamming in DTN, there exist...
This research studies users' adoption process of WiMAX. This process cannot be viewed in isolation and must consider the effect of co-existing telecommunication networks and a highly saturated market. WiMAX success would involve getting existing mobile subscribers to switch over to WiMAX. Hence, 2/2.5G and 3G subscribers are used separately as subjects of investigation because they are likely to form...
Localization is a crucial service for various applications in wireless sensor networks (WSNs). Although most researches assume stationary nodes, sensor mobility can enrich the application scenarios. Existing dynamic localization approaches require high seed density or incur a large communication overhead. In order to address these problems, we propose an efficient rang-free localization algorithm,...
This paper proposes an enhanced multihoming support scheme based on combining ideas from both the Shim and Proxy Mobile IPv6 (PMIPv6) protocols. The proposed scheme not only resolves the multihoming support problems with the current PMIPv6, but also provides mobility support to the Shim protocol. In the proposed scheme, the Shim protocol is locally used between a multihomed Mobile Node (MN) and the...
In a network-based approach such as proxy mobile IPv6 (PMIPv6), the serving network controls mobility management on behalf of the mobile node (MN). Thus, the MN is not required to participate in any mobility-related signaling. PMIPv6 is being standardized in the IETF NetLMM WG. However, the PMIPv6 still suffers from a lengthy handover latency and packet loss during a handover. In this paper, we propose...
A new type of six legged wall-climbing robot with modular joints for the anti-terrorist field is proposed in this paper. It can move quickly and quietly with help of passive joints on its ankle and a silent vacuum generator. Design of the mobile system is first described. Then the analyses of the torque on each joint and the structure design of them, as well as the vacuum producer are presented in...
This paper proposes a practical solution to support multihoming in NEMO based on proxy mobile IPv6. During each registration, all mobile network prefixes are registered with the home network to realize the benefit of multihoming. Plus, L2-tunnels and information sharing among mobile routers in NEMO allow mobile routers to achieve fault tolerance and path selection. The proposed scheme is validated...
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