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When the range of single-hop wireless communication is limited by distance or harsh radio propagation conditions, relays can be used to extend the communication range through multihop relaying. This paper targets the need in certain scenarios for rapid deployment of these relays when little or nothing is known in advance about a given environment and its(More)
Channel-adaptive relaying has recently been proposed as a means to exploit spatial and temporal diversity in multihop ad hoc networks with fading. In conjunction with appropriate routing protocols, adaptive relaying enables each forwarding node in a multihop path to dynamically select the next-hop relay as a function of the measured (time-varying) channel(More)
Ahsrnrcr-\\Ve propose a multi-sector antenna based access point (AP) network architecture wi th omni-directional mobile nodes (RlNs). We investigate the effect o f hidden nodes and power control on the system performance. and compare the pet'firrmsnce of the (woposed network architecture with that uf a n omni-dircctional APlMNs network architecture in terms(More)
We describe a multilayer connection control architecture for broadband communications. A graph framework is introduced to describe network layers of network design, path configurations, dynamic call routing, burst switching, and ATM cell switching. These hierarchical layers of switching are performed at decreasing time scales, respectively. Switching at the(More)
— This paper describes an approach for relaying in multihop networks that adapts to the time-varying channel and exploits spatial diversity to mitigate multipath fading. Ignored in some performance analyses, fading arises from multipath propagation and causes fluctuations in the signal strength in mobile networks, adversely affecting communication(More)
This paper presents the empirical results and analysis of a link variability study for an indoor, stationary 802.11 network subject to external interference. The objective is to characterize the relationships between the packet loss rate on a link and the transmitter-receiver distance, the SNR as reported by the 802.11 card, and time. Experimental results(More)