Globally-Aware Allocation of Limited Bandwidth in Multipath Routing Based on Queueing Performance

Author(s):  
Junxiao He ◽  
Oliver Yang
Author(s):  
Prasanta K. Manohari ◽  
Niranjan K. Ray

In the absence of central authority, dynamic topology, limited bandwidth and the different types of vulnerabilities secured data transmission is more challenging in Mobile Ad hoc Network (MANET). A node in MANET acts as a host as well as a router. Routing is problematic due to node mobility and limited battery power of node. Security mechanisms are required to support secured data communication. It also requires mechanism to protect against malicious attacks. In recent times multipath routing mechanisms are preferred to overcome the limitation of the single path routing. Security in routing dealt with authentication, availability, secure linking, secure data transmission, and secure packet forwarding. In this chapter, we discuss different security requirements, challenges, and attacks in MANETs. We also discuss a few secured single path and multipath routing schemes.


2018 ◽  
Vol 132 ◽  
pp. 15-25 ◽  
Author(s):  
Junxiao He ◽  
Oliver Yang ◽  
Yifeng Zhou

1968 ◽  
Vol 11 (4) ◽  
pp. 811-816 ◽  
Author(s):  
Maurice I. Mendel

Thirty infants, ranging in age from 4 to 11 months, were tested with five different recorded sounds that varied in bandwidth and temporal configuration: a continuous band of white noise, the same band of noise interrupted twice per second, the crinkling of onionskin paper, a narrow band of noise centered at 3000 Hz, and a warbled 3000 Hz tone. With loudness and duration of the stimuli held constant, more responses occurred to sounds composed of a broadband spectrum than to those of a limited bandwidth. Temporal configuration of the sound had no effect on the number of responses elicited.


Author(s):  
Istabraq M. Al-Joboury ◽  
Emad H. Al-Hemiary

Fog Computing is a new concept made by Cisco to provide same functionalities of Cloud Computing but near to Things to enhance performance such as reduce delay and response time. Packet loss may occur on single Fog server over a huge number of messages from Things because of several factors like limited bandwidth and capacity of queues in server. In this paper, Internet of Things based Fog-to-Cloud architecture is proposed to solve the problem of packet loss on Fog server using Load Balancing and virtualization. The architecture consists of 5 layers, namely: Things, gateway, Fog, Cloud, and application. Fog layer is virtualized to specified number of Fog servers using Graphical Network Simulator-3 and VirtualBox on local physical server. Server Load Balancing router is configured to distribute the huge traffic in Weighted Round Robin technique using Message Queue Telemetry Transport protocol. Then, maximum message from Fog layer are selected and sent to Cloud layer and the rest of messages are deleted within 1 hour using our proposed Data-in-Motion technique for storage, processing, and monitoring of messages. Thus, improving the performance of the Fog layer for storage and processing of messages, as well as reducing the packet loss to half and increasing throughput to 4 times than using single Fog server.


2012 ◽  
Vol 23 (1) ◽  
pp. 65-81 ◽  
Author(s):  
Jin-Shu SU ◽  
Bin DAI ◽  
Yu-Jing LIU ◽  
Wei PENG

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