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With the rapid development of Wireless Sensor Networks (WSNs), besides the energy efficient, Quality of Service (QoS) supported and the validity of packet transmission should be considered under some circumstances. In this paper, according to summing up LEACH protocol's advantages and defects, combining with trust evaluation mechanism, energy and QoS control, a trust-based QoS routing algorithm is...
This article presents an approach towards aggregating bandwidths of multiple physical layers i.e. transmitting and receiving data simultaneously through the multiple physical interfaces of a fixed computing system. The data over physical layers can communicate over both wired and wireless communication medium at the same time. This proposed bandwidth-aggregation-system (BWA) enhances the download...
With the popularization of the wireless and wired networks, this paper will regard WiFi, WiMAX and CATV (DOCSIS) as the research objects, focus on the relevant technology of seamless layer 2 framework for heterogeneous networks. Seamless communication is the most important topic of this paper, beside it, routing cost and QoS guarantees, will also be important problems that must be considered in the...
In this paper, we discuss the issues of QoS multicast routing in multi-hop Cognitive Radio (CR) networks. The problem of our concern is: given a CR network and a QoS multicast request, how to set up a multicast connection so that the total bandwidth consumption of the multicast is minimized while the QoS requirements are met. We propose a distributed protocol which uses shortest path tree as the multicast...
Due to the dynamic topology, limited and shared bandwidth of the mobile ad hoc network (MANET), providing Quality of Service (QoS) for MANET-based Networked Control Systems (NCS) is a challenging task. This paper integrates the concept of choosing stable route according to Received Signal Strength Indication (RSSI) into AQOR. Considering the data packet transmission characters of NCS, we let the intermediate...
Ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration.. This paper proposes a novel constrained entropy-based multipath routing algorithm in adhoc (NCEMR). The key idea of NCEMR algorithm is to construct the new metric-entropy and select the stability path with the help of...
The monitoring system in coal mine has special requirements for data query. Analysis shows that routing in the system should have four features: data-centric routing, supporting query of geographic position, low delay and high reliability of data transmission, robustness of topology. A mobile agent based routing algorithm with mobile sink and a dynamical weight metric which is derived from its current...
This paper proposes a fast forward medium access control protocol (FFMAC) for quality-of-service (QoS) guarantee in multihop IEEE 802.11s wireless mesh networks with multiple channels. To the best of our knowledge, the proposed protocol is the first one which considers the multihop and multichannel issues simultaneously. It provides higher priority for real-time applications, while remaining the distributed...
This paper explores the attributes, layering models and objective functions in cross layer designs for mobile ad hoc wireless networks by taking all the statistical characteristics and constraints from the physical (PHY) layer, media access control (MAC) layer and network (NET) layer into consideration. This paper reviews the entire network optimization across all the PHY/MAC/NET layers. At the PHY...
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