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Topology control is one of the fundamental problems in WSNs (wireless sensor networks). It is of great importance for prolong lifetime, reducing radio interference, for prolong lifetime, increasing the efficiency of MAC (media access control) protocols and routing protocols, ensure the quality of connectivity and coverage, increasing the network service and so on. In this survey paper, different network...
Wireless sensor networks have been used to gather data and information in many diverse application settings. The capacity of such networks remains a fundamental obstacle toward the adaptation of sensor network systems for advanced applications that require higher data rates and throughput. In this paper, we explore potential benefits of integrating directional antennas into wireless sensor networks...
In this paper, we provide a general framework of distributed medium access control (DMAC) and synchronization for ad-hoc sensor networks with omni-directional antennas. Compared to existing works that focus on minimizing the energy consumption, our design objectives aim to increase the throughput, to lower the latency, and to solve hidden and exposed nodes problem in a traffic-heavy and dynamic environment...
In wireless ad hoc and sensor networks, an analysis of the node energy consumption distribution shows that the largest part is due to the time spent in the idle state. This result is at the origin of SERENA, an algorithm to SchEdule RoutEr Nodes Activity. SERENA allows router nodes to sleep, while ensuring end-to-end communication in the wireless network. It is a localized and decentralized algorithm...
The design of an efficient medium access control (MAC) for wireless ad hoc networks or wireless sensor networks is challenging. These kinds of network can benefit from communication protocols that avoid frame collision: time division multiple access (TDMA). However, ad hoc networking and sensor networks enable novel communication paradigms which require the definition of new quality-of-service (QoS)...
Increasing onboard processing capabilities of sensors enable self-organization in wireless sensor networks to dynamically adapt to ad-hoc topologies and to react to task or network changes. Such self-organization, however, comes at a cost of additional energy consumption of the sensor nodes with already limited power resources. Energy limitations of sensor nodes in unattended environments require...
The following topics were dealt with: personal communications; indoor communications; mobile radio communications; MIMO communications; wireless MAN IEEE 802.16; QoS; radio resource management in beyond 3G systems; convergence of mobile and broadcast; UWB; cognitive networks; sensor networks; ad hoc networks; wireless cellular networks; interference avoidance; antennas; 4G systems; OFDM; MC-CDMA;...
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