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One of the most important function of the Multimedia service
through Wire-less Network is supplying the Quality of Service
: QoS accordign to the whole structure of the Network, and features.
Our company recently selected and developed fraction lost based
QOS service, which has evolved from the round-trip delay based
QOS. And this development went through service experiences on
commercial wireless network and service quality report on error
network recently made.
Ontimetek™ developed Dynamic Rate Control(DRC) Method
to do more precise QoS level control through adapting QoS guarantee
technology which domestic carrier already
adapted based Contents Bit Rate to RTCP Receiver Report based
technology, supporting
Linear Increase Multiple Decrease(LIMD) QoS guarantee method
based scalable contents.
The core technology is to design server system which could control
drift errors happen by change of rate parameter within the allowance
by its efficient analysis.
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Ontimetek's VOD System can supply more than 5 levels of Scalability
for each content, and Scalability level has 해당 Bit-Rate, so
it supplies the service with the bit-rate for the best suited
QOS service according to the network/terminal functions and
status.
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The Bit-Rate Controlling function which the Streaming Server
supplies, can be applied differently according to the authority
of the defined user of the types of network/terminal/service.
And supplies the best suited Qos through detecting the conditions
of network.
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Using SP/PR of RTSP, it is possible to supply the Bit-Rate concerning
Network/terminal /Service.
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Through applying the LIMD algorism(based on SR/PR of RTSP),
the condition of the network can be detected on real-time, and
the active/intelligent QOS service will be supplied through
the data of the network. Therefore, the client can be supplied
the best suited service which the network/terminal can give.
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