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This paper studies the problem of joint routing and transmission scheduling for reliable real-time communication over lossy networks. We impose a strict latency bound on the packet delivery from source to destination and develop transmission scheduling policies that maximize the probability that the packet is delivered within the specified deadline. A solution to this problem allows to characterize...
Energy conservation is a critical issue regarding wireless mobile ad hoc networks, since the nodes are battery restrained and the depletion of their power defines the lifetime of the network. This paper presents the PAST-EnDRoP: position aided spatial TDMA (PA-STDMA) MAC protocol with Energy and delay constrained routing for mobile ad hoc networks. It is a novel approach designed for optimized channel...
This paper presents an algorithm for maximizing the lifetime of a sensor network while guaranteeing an upper bound on the end-to-end delay. We prove that the proposed algorithm is optimal and requires simple computing operations that can be implemented by simple devices. To the best of our knowledge, this is the first paper to propose a sensor wake-up frequency that depends on the sensor's location...
The simultaneous transmission of data messages to a group of neighbors forms the basis for many essential services in wireless ad hoc and mesh networks, for example to communicate link status information or to assist route discovery. Despite the fact that communication on a wireless medium is inherently of broadcast nature, there exist situations, where data broadcasting is non-trivial. In particular,...
To prolong the lifetime of sensor networks, various scheduling schemes have been designed to reduce the number of active sensors. However, some scheduling strategies, such as partial coverage scheduling and target coverage scheduling, may result in disconnected network topologies, due to the low density of the active nodes. In such cases, traditional routing algorithms cannot be applied, and the shortest...
In this paper large scale multihop sensor networks are established as non-beacon enabled ZigBee mesh networks. The lifetime of the network is increased by putting nodes to sleep and to wakeup state autonomously. To enable a reliable system with sensor nodes sleeping in an asynchronous manner, we propose a cross-layer sleep scheduling solution coupled with ZigBeepsilas proposed AODV routing. It consists...
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