On Mon, Nov 14, 2022 at 1:05 PM Christian Huitema <[email protected]> wrote:
> Hello Chuan Ma, > > Your draft aligns very much with some of the options investigated for > "media over QUIC". Have you considered participating in that working group? > > I agree, this looks very much like media transmission material. Behcet > -- Christian Huitema > > On 11/14/2022 10:20 AM, Chuan Ma wrote: > > Dear all: > > > > I'm Chuan Ma from Tsinghua University. I want to discuss the deadline > > awareness of the current application and whether we should add it to the > > QUIC protocol. > > > > Applications may have specific deadline requirements for data > transmission. > > For instance, a video conference application may require sending the data > > with a deadline of 200ms to enable live interaction. The application may > > drop the data that misses the deadline, even if the data has already > > reached the other end. In this case, it is possible to drop the data > after > > the given deadline from the sender to save bandwidth and decrease queuing > > time. Deadline requirement is also helpful to offer deadline-aware > > scheduling combined with QUIC stream priority. Such scheduling methods > can > > increase the punctuality of QUIC and allow more data to arrive on time. > It > > is possible to extend QUIC and offer deadline-aware transport as a > service. > > > > Nowadays, deadline-aware data transmission is getting more and more > > popular. Applications that emphasize real-time interaction, such as > VR/AR, > > gaming, and video conference, are drawing more and more attention. So > > deadline-aware transport has a lot of use cases. However, currently, it > is > > the application that is responsible for realizing deadline-aware > transport. > > This transport service should be offered by the transport protocol but > not > > be left to the application. It is reasonable to provide such transport > > service in a new transport protocol, and QUIC is a good base. > > > > We wrote a draft to show this idea in > > https://datatracker.ietf.org/doc/draft-shi-quic-dtp/ and implemented a > > protocol based on QUIC called DTP (Deadline-aware Transport Protocol) in > > https://github.com/STAR-Tsinghua/DTP.git. We also built a live stream > > prototype application to compare the performance between DTP and QUIC ( > > https://github.com/STAR-Tsinghua/LiveEvaluationSystem.git). We found > that > > DTP outperformed QUIC in improving data transmission punctuality and > saving > > bandwidth resources. We published the paper in ICNP22 and built several > > systems like proxy and tunnel based on DTP. It would be a good idea to > give > > this method a try. > > > > We'd like to know what you think about this topic. Please let us know if > > you have any comments. > > > > Best regards. > > > > Chuan Ma > > > >
