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In a Wireless Sensor Network (WSN), there are a large number of nodes whose power supply and computational capability are limited. The nodes in a wireless sensor network can be fixed or move randomly. Thus in these networks, to forward a data packet from one node to another needs to use specific strategies with very different characteristics. Accordingly the data forwarding strategy among nodes plays...
Schedule based MAC protocols have been proposed to meet the energy constraint of Wireless Sensor Neworks (WSNs). Although existing schedule based MAC protocols such as LMAC and MC-LMAC are energy efficient, they introduce significant end-to-end delivery latency as well as low network throughput. In this paper, a low latency multichannel LMAC protocol, LL-MCLMAC protocol, is presented for WSNs which...
To meet the requirements on data collection from wireless sensor network for healthcare application especially in hospital, the performance of wireless communication is an important issue. In particular, simultaneous transmissions from numerous sensors will cause serious collision which leads to transmission packets loss and delay. In this paper, a management scheme, multi-criteria decision making...
Industrial application of wireless sensor networks require timelines in exchanging messages among nodes. IEEE 802.15.4 is a standard to address the need for low-rate low-power low-cost wireless networking. In wired connection, the components such as actuators or sensors provides high performance besides wired links consist of many mechanical problems. Hence to achieve low latency, high performance...
The token passing multiple access (TPMA) scheme is a common adopted scheme for wireless network-on-chip (WiNoC) in chip multi-processors (CMPs). The drawback of TPMA is the channel access delay due to TPMA passing the token in a round-robin manner no matter the node has packets to send. In this paper, we study the performance of the slotted p-persistent carrier sense multiple access (CSMA) scheme...
Constant monitoring of patient's health is essential to provide appropriate healthcare. With advances in electronic circuit miniaturization and micro-electromechanical systems (MEMS), wearable sensor nodes can be used to acquire physiological signals from patient's body and transmit them to a remote location which can be accessed by the doctors. Wireless Sensor Networks (WSNs) are becoming an integral...
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