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Groups of strongly consistent devices can efficiently order events under ideal (data center) conditions, but become less effective in dynamic and heterogeneous environments. Weakly consistent devices efficiently tolerate both faults and dynamic conditions but are slow to converge on a single ordering of system events. We propose "federated consistency", which combines the strengths of both...
In the world of Internet of Things (IoT), it is desired that every IoT device is able to communicate with the network all the time. Among various technologies to enable network connectivity, Long Term Evolution (LTE) is by far the most ubiquitous technology to provide coverage for IoT devices. The IoT devices are inherently resource constraint and efficient communication is one of the primary requirements...
The Bluetooth Low Energy (BLE) is one of promising technologies widely used for Internet of things (IoT) services because of its low energy consumption. In IoT, BLE gateways should discover surrounding BLE devices in a short time. However, this requirement is difficult to achieve when the number of BLE devices is very large. As the number of BLE devices increase, the signal density increase, and the...
The capacity limits of the Random Access Channel (RACH) of Long Term Evolution (LTE) for highly dense Machine-to-Machine communications are studied in this paper. We consider the case study when a high number of devices attempt to transmit information to the same base station in a very short period of time. Simulations have been performed considering several parameter configurations related to the...
Device-to-device (D2D) communication is envisioned as a promising technology in future cellular networks. In this paper, we investigate the delay-aware resource allocation and power control algorithm for delay-sensitive D2D communications underlaying cellular networks. With the objective to minimize the average delay and average drop rate, we formulate the optimization problem as an infinite horizon...
The deficient energy supplies of wireless sensor networks (WSNs) drives network designers to optimize energy consumption in various ways. Not only with regard to the energy issue but also with respect to system performance, we design a local search technique for sink placement in WSNs that tries to minimize the maximum worst-case delay and extend the lifetime of a WSN, simultaneously. Since it is...
In this paper, we present a novel technique for online testing of feedback bridging faults in the interconnects of the cluster based FPGA. The detection circuit will be implemented using BISTER configuration. We have configured the Block Under Test (BUT) with a pseudo-delay independent asynchronous element. Since we have exploited the concept of asynchronous element known as Muller-C element in order...
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