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Vehicular heterogeneous networks (VHNs) are a special type of wireless vehicular networks. In the VHNs, the nodes choose an access network to download data from the Internet. Most of the existing access network selection mechanisms concentrate on the perspective of individual nodes, only limited work focus on cooperative communications among vehicles. In this paper, a new network selection approach...
In this paper we propose a frame traffic control algorithm in the media access control (MAC) layer for IEEE802.11 wireless local area networks (WLANs), namely the Adaptive Frame Size Proportion Optimization (AFSPO) algorithm. The algorithm adaptively adjusts the sending frame size of each station in the network based on the real-time proportion of data frames, to weaken the self-similar characteristics...
With the development of Mobile IPv6 and multicast technology, mobile multicast becomes a research hotspot. Based on two basic mobile multicast methods, the Bi-directional Tunnel (BT) method and the Remote Subscription (RS) method, some mobile multicast schemes have been proposed. However, most of them evaluate the performance by means of analysis and simulation, but lack of testing the performance...
Lots of works have showed that the wireless LAN frame traffic is self-similar and obeyed in the heavy-tailed distribution. This paper analyzes a frame traffic data collected from real IEEE 802.11 networks, and studies the impacts of each type of frame traffic (management frame traffic, control frame traffic, data frame traffic, and retransmission frame traffic) on characteristics of self-similarity...
In this study, we analyze the impact of different types of frame traffic on the self-similar behavior of the aggregated frame traffic, collected from the IETF 2005 conference. Our measurement results show that the different types of frame traffic have various impacts on the self-similarity of the aggregated frame traffic in different session periods, and these impacts are simultaneously related with...
This paper makes use of the fluid-based approach to model the throughput of TCP Veno flow over wired/wireless networks. A generalized formula is derived between Veno's throughput and its window evolution parameters, packet loss rate and round-trip time. Simulation experiments and real network measurements are conducted to validate the accuracy of this model.
A CMOS polyphase low-IF filter with on-chip frequency control for a 2.4 GHz wireless LAN is presented. Designed in a 1.8 V, 0.18 mum standard CMOS process, this Chebyshev polyphase filter has a 7th order 0.5 dB passband ripple. An on-chip auto frequency control module is designed for the variation of process in order to get the required sensitivity of the filter. This filter consumes 1.74 mW including...
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