927 research outputs found
Performance Evaluation of Triple Play Services Delivery with E2E QoS Provisioning
The creation and wide use of new high quality demanding services (VoIP, High Quality Video Streaming) and the delivery of them over already saturated core and access network infrastructures have created the necessity for E2E QoS provisioning. Network Providers use at their infrastructures several kinds of mechanisms and techniques for providing QoS. Most known and widely used technologies are MPLS and DiffServ. The IEEE 802.16-2004 standard (WiMAX) refers to a promising wireless broadband technology with enhanced QoS support algorithms. This document presents an experimental network infrastructure providing E2E QoS, using a combination of MPLS and DiffServ technologies in the core network and WiMAX technology as the wireless access medium for high priority services (VoIP, High Quality Video Streaming) transmission. The main scope is to map the traffic prioritization and classification attributes of the core network to the access network in a way which does not affect the E2E QoS provisioning. The performance evaluation will be done by introducing different kinds of traffic scenarios in a saturated and overloaded network environment. The evaluation will prove that this combination made feasible the E2E QoS provisioning while keeping the initial constrains as well as the services delivered over a wireless network
A two-way interactive broadband satellite architecture to break the digital divide barrier
September 24-26, 2007, Turin, Ital
TV-Centric technologies to provide remote areas with two-way satellite broadband access
October 1-2, 2007, Rome, Italy TV-Centric Technologies To Provide Remote Areas With Two-Way Satellite Broadband Acces
Performance Study of Mobile TV over Mobile WiMAX Considering Different Modulation and Coding Techniques
With the advent of the wide-spread use of smart phones, video streaming over
mobile wireless networks has suddenly taken a huge surge in recent years.
Considering its enormous potential, mobile WiMAX is emerging as a viable
technology for mobile TV which is expected to become of key importance in the
future of mobile indus- try. In this paper, a simulation performance study of
Mobile TV over mobile WiMAX is conducted with different types of adaptive
modulation and coding taking into account key system and environment parameters
which include the variation in the speed of the mobile, path-loss, scheduling
service classes with the fixed type of mod- ulations. Our simulation has been
conducted using OPNET simulation. Simulation results show that dynamic
adaptation of modulation and coding schemes based onchannel conditions can
offer considerably more en- hanced QoS and at the same time reduce the overall
bandwidthof the system.Comment: 12 pages, 9 figures. arXiv admin note: substantial text overlap with
arXiv:1312.7442; and text overlap with arXiv:1005.0976 by other author
Investigation of Vertical Handoff Techniques in Integrated WLAN/Cellular Networks and Performance Analysis of Horizon Handoff in WiMax Networks
A thesis presented to the faculty of the College of Science and Technology at Morehead State University in partial fulfillment of the requirement for the Degree of Master of Science by Elaheh Arabmakki May 9, 2011
Mobile Broadband Possibilities considering the Arrival of IEEE 802.16m & LTE with an Emphasis on South Asia
This paper intends to look deeper into finding an ideal mobile broadband
solution. Special stress has been put in the South Asian region through some
comparative analysis. Proving their competency in numerous aspects, WiMAX and
LTE already have already made a strong position in telecommunication industry.
Both WiMAX and LTE are 4G technologies designed to move data rather than voice
having IP networks based on OFDM technology. So, they aren't like typical
technological rivals as of GSM and CDMA. But still a gesture of hostility seems
to outburst long before the stable commercial launch of LTE. In this paper
various aspects of WiMAX and LTE for deployment have been analyzed. Again, we
tried to make every possible consideration with respect to south Asia i.e. how
mass people of this region may be benefited. As a result, it might be regarded
as a good source in case of making major BWA deployment decisions in this
region. Besides these, it also opens the path for further research and in depth
thinking in this issue.Comment: IEEE Publication format, ISSN 1947 5500,
http://sites.google.com/site/ijcsis
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