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New Technique for Efficient Video
Distribution over WiMAX Networks
for telemedicine services will be presented in the
following subsections.
Video-based applications are among the most
challenging services being offered by network or
service providers. The qualitative range of ultimate
set of technical parameters glued to a defined ap-
plication may still vary from tolerant to stringent
depending on an expected service required by a
healthcare customer. Streamed video, video on
demand, video broadcasting, video surveillance,
on-line video gaming are based on the same QoS
demands for network delivery thanks to the nature
of its data content but, nevertheless, have an es-
sential difference in jitter, latency or packet-size
configuration and rate constraints. In our research
we focus on IEEE802.16 standard as one of the
emerging candidates for the next generation of
ITU-Advanced systems.
The work is based on our previous research
(Tsitserov, Markarian & Manuilov, 2008) which
is concerned with the distribution of object-
oriented MPEG streams over WiMAX network
with an exploitation of service flows embedded in
WiMAX specifications. In the following sections
we analyse the bandwidth resource allocation
depending on a scheduling algorithm and apply
splitting of video traffic. Based on the developed
In this subsection a technique for efficient video
distribution over WiMAX networks is proposed.
The technique incorporates resource distribution,
scheduling and content-aware streaming of video
taking an advantage of a flexible QoS functional-
ity offered by WiMAX. The proposed technique
was thoroughly investigated using NS-2 software
package under various real-life e-health scenarios
which included streaming video over MAC ser-
vice connections. It is shown that the technique
allows dramatic increase in the overall network
throughput, which is dependent upon the initial
selection of WiMAX parameters.
The Developed Technique
In many examples of e-Health services the
WLANs do not provide enough coverage area
and WiMAX needs to be used. IEEE 802.16/
WiMAX (Andrews, 2007) technology intends
to provide broadband connectivity to both fixed
and mobile users in a wireless metropolitan area
network environment. Analysis of advantages and
applications of IEEE 802.16/WiMAX technology
Figure 1. WIMAX Network Uplink Throughput (bps) Simulation Model Evaluation
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