[e2e] Packet transmission timer

Jeevandra jeevandra at swift.ee.umist.ac.uk
Thu Jul 5 10:54:55 PDT 2001


Hi there,
I am a research student trying to develop a rate-based protocol to stream video over the internet. I have encountered an implementation  problem which I am hoping that someone from this mailing list could advise me on. 
In a rate based transport scheme, the inter packet gap is fixed according to the rate at which we want to deliver the packets. I do realise that for, say, MBits/s transmission of 1000 bytes packet size, this inter packet gap will be somewhere around milliseconds or less. But most OSs are not able to provide that of a high timer resolution. I am only able to obtain at most a 10ms granularity. This is certainly insufficient but I am sure people have worked around this constraint. I was just wondering if there is anyone on the list who could advise me on this. What is the most common implementation technique of the timer for these rate control method? How do I achieve MBits/s delivery rate on a Windows platform or a Linux platform? I thank you in advance.

Regards,
Jeevandra 
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