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Using Cluster-based routing algorithm to prolong wireless sensor network's lifetime is an important research topics. In this paper we proposed a novel clustering algorithm named PLEACH, which selects cluster head more evenly. First, it calculates the optimal cluster numbers according to a new strategy. Then it uses improved PSO algorithm to choose the most suitable cluster head in the next round selecting...
In this paper we compare performance intra-core communications in network on chips.We consider two alternative architectures, wired and wireless. The wired on is based on a common bus (ring) with all the cores attached to it. We compare it to the mesh (point-to-point) architecture based on THz wireless links operating in 0.1−0.54 frequency band. Using reference latencies of inter-core communications...
A transmission-line bandpass filter based on bandstop filter is proposed in this paper. A key merit of the filter configuration is that the position of the transmission zeros can be conveniently controlled whereas the bandwidth is fixed. The bandpass filter consists of two half-wavelength resonators, two open circuited uniform impedance resonators and one stepped impedance resonator. With five reflection...
Technological developments in the micro-electronics and wireless communications, in addition to obtain ability of cheap CMOS cameras and micro phones, have led to appearance of next generation networks known as Wireless Multimedia Sensor Networks (WMSNs). WMSN can retrieve image, video, audio and scalar sensor data from the physical environment. Wireless multimedia sensor networks will not only enhance...
In our previous work, we presented WMN-GA (Wireless Mesh Networks-Genetic Algorithm) system. In this paper, we use WMN-GA and analyze the simulation results considering packet delivery ratio (PDR), throughput and delay metrics. For simulations, we used ns-3 simulator and Hybrid Wireless Mesh Protocol (HWMP). We evaluate the performance of WMN for Exponential and Weibull distributions by sending multiple...
One of the key advantages of Wireless Mesh Networks (WMNs) is their importance for providing cost-efficient broadband connectivity. There are issues for achieving the network connectivity and user coverage, which are related with the node placement problem. In this work, we consider the router node placement problem in WMNs. We want to find the optimal distribution of router nodes in order to provide...
Low-Power and Lossy networks (LLNs) cover a wide scope of applications, including, but not limit to, industrial control, healthcare and building automation, which has proliferated into both industrial and academic areas in recent years. Routing plays a significant role to the overall architecture of LLNs. The IPv6 Routing Protocol for Low Power and Lossy Networks (RPL) is standardized by IETF to provide...
Recent studies show that the 60GHz wireless technology could help resolving the hotspot issue in data center networks (DCNs). However, transmissions over 60GHz suffer from limitations of short transmission range and blockage, which makes it a new challenge how to appropriately establish wireless links in the DCN. In this paper, we propose to integrate wireless links into the DCN with the wireless...
This paper considers the problem of intra-interference in a Wireless Body Area Network (WBAN). The problem arises mainly because each bio-sensor collects different parameters with different data rate and alternation. Another source of interference is related to normal patient movement. Proposals in the literature usually assume that the interference can be handled using time multiplexing or by listening...
Network coding involves in processing several received packets by a relay node for generating a single packet in systematic manner such that the receivers can regenerate the original packets from this packet received from relay node. The network coding techniques show better throughput only under low traffic condition. This work proposes Maximum Flow Min Cut (MF-MC) algorithm which determine the threshold...
With the Continuous advancement of technology, enormous amount of heterogeneous devices can be integrated on a single chip in an efficient manner. It implies the need of high performance routers to communicate between the devices. For achieving high speed communication, the interconnection between the multiple cores should be an efficient one. In this paper, we expose a new architecture for an efficient...
To identifies the desired transmission range of each node in a cluster and power management based on mean transmission power within the context of wireless ad-hoc networks. By reducing the transmission range of the nodes, energy consumed by each node is decreased and topology is formed by sending messages between the nodes such as RTS and CTS. A new algorithm is formulated by deriving a mathematical...
Over the last decade, research experimental infrastructures have been widely deployed, enabling Future Internet experimental validation in realistic testing environments. Addressing resource management issues, such as discovery, selection, allocation and provisioning of resources, is crucial for the infrastructure's operation and efficiency in providing researchers with the appropriate experimentation...
On-road-communications are increasing in relevance, due to the variety of applications for traffic management systems (TMS) and road safety. This interest is enforcing relevant efforts from research community and standardization bodies to support V2V (vehicle to vehicle) and V2I (vehicle to infrastructure) communications. In this framework, an hybrid approach between IEEE 802.11p standard together...
Distributed caching in the radio access network (RAN) has been a common approach for improving QoE per- ceived by mobile users and reducing backhaul traffic load. In this paper, we focus on the problem of cooperative and online searching and routing for content objects cached according to their local popularity in small- cell networks (SCNs), considering practical issues of implementation complexity...
Secret group key generation based on physical layer in wireless communications has a lot of practical applications. A few studies focused on the theoretical bounds of the secret key rate based on the sets of received signals rather than a particular secret key generation scheme. We propose a secret group key generation scheme for an arbitrary number of legitimate nodes, n, in mesh topology in the...
In this paper, we present a novel QoS (quality of service) multicast routing protocol (QMRP) for partially mobile wireless TDMA (time division multiple access) networks. This protocol has been inspired by the typical requirements of industrial networked control systems, i.e., systems exhibiting real-time behavior and therefore requiring predictable communication bandwidths and transfer delays. QMRP...
In this paper we propose, implement and evaluate a bandwidth aggregation service for residential users that enhances the throughput of their Internet broadband connection through the aggregation of available capacity at neighboring broadband links. Network resources are aggregated by the residential access gateway using the 802.11 radio interface to simultaneously serve home users and to share the...
In the design of Wireless Mesh Network (WMN) for small cell backhaul, deployment cost and reliability are important considerations and are mainly determined by network topology. Reliability ensures the network quality for clients and cost is a major concern in telecom operators. In practice, increasing redundant network links improves the reliability of a backhaul network, but increases the cost substantially...
Long-range wireless shortcuts in Network-on-Chip (NoC) architectures are shown to significantly improve energy-efficiency in on-chip data transfer. However, over-utilization of the wireless shortcuts and non-uniform traffic patterns may result in thermal hotpots in the NoC links or switches. In this work we propose a cross-layer approach of optimizing the NoC topology to achieve a balanced traffic...
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