Implementation and Performance Evaluation of a Differentiated Services Test-Bed for Voice over IP Support

Author(s):  
Romano Fantacci ◽  
Gianluca Vannuccini ◽  
Alessandro Mannelli ◽  
Luca Pancani
2005 ◽  
Vol 47 (6) ◽  
pp. 847-869 ◽  
Author(s):  
Mohammad Hossien Yaghmaee ◽  
Mohammad Bagher Menhaj ◽  
Hale Amintoosi

2015 ◽  
Vol 2015 ◽  
pp. 1-17 ◽  
Author(s):  
Lili Wang ◽  
Yajuan Qin ◽  
Huachun Zhou ◽  
Jianfeng Guan ◽  
Hongke Zhang

Proxy Mobile IPv6 (PMIPv6) is proposed as a promising network-based mobility management protocol, which does not need any participation of mobile nodes. PMIPv6 does not support the multicast well and most of the current research concentrates on the mobile multicast receiver. However, the mobile multicast sender is also very important and challenging, which has not been addressed well. Therefore, in this paper we propose two efficient PMIPv6 based mobile multicast sender support schemes which are PMIP bidirectional tunneling (PMIP-BT) and PMIP direct routing (PMIP-DR). In the PMIP-BT, the multicast traffic can be delivered through the PMIPv6 bidirectional tunnel, while, in the PMIP-DR, the multicast data can be transmitted via an optimized direct multicast routing. Both of them can support the multicast sender mobility transparently enabled in the PMIPv6 networks. We evaluate the performance of the proposed schemes by theoretical analysis, and the numerical results show that the proposed schemes have a better performance in terms of the signaling cost than the current schemes. Meanwhile, the proposed schemes are also implemented on the test bed, and the experimental results not only verify the validity and feasibility of our proposed schemes, but also conclude the different scenarios to which they are applicable.


Author(s):  
Usman Ashraf ◽  
Syed Salman Haider Rizvi ◽  
Mohammad Faisal Azeem

In the world of wireless communication technologies, the new standard IEEE 802.11n (MIMO) has revolutionized the available wireless bandwidth. Significant industrial and academic research has been initiated on this new technology around the world. Moreover, international as well as local manufacturers are highly interested in commercialization and performance improvement of this new technology. This is a research project in which we will perform comprehensive benchmarking of IEEE 802.11n in wireless multi-hop environments. In this project we evaluate the performance of routing metrics: Hop Count (HC) and Expected Transmission Count (ETX) on a test bed at A-Block Air University.


2004 ◽  
Vol 12 (4) ◽  
pp. 537-565
Author(s):  
Evi Tsolakou ◽  
Eugenia Nikolouzou ◽  
Sotiris Maniatis ◽  
Iakovos Venieris

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