Re: [ipwave] Adaptive RESTful Real-time Live Streaming for Things (A-REaLiST)'

[Alexandre Petrescu <[e-mail]>]

Le 24/01/2019 à 05:07, Abhijan Bhattacharyya a écrit :
> Dear list,
> We submitted a draft in CoRE with a technical proposal for efficient 
> transfer of time-series stream and presented in IETF Bangkok. The 
> immediate use case that we considered was to transfer First Person View 
> (FPV) video from a remote drone to a control unit over IP based 
> infrastructure. We built it on CoAP leveraging some of CoAP's unique 
> features.

Hi,

Thank you for the message.

I have seen another drone from DLR that communicates with a van, but not 
using CoAP.  It uses TCP/IP family of protocols.

I understand the need to transfer video (First-Person View, FPV), but I 
do not understand how CoAP helps with video.

Video over IPv6 over OCB works fine between vehicles.

In the future, with the hopeful development of 802.11-NGV (Next 
Generation Vehicular), I expect latencies in the order of hundreds of 
micro-seconds, and 1Gbps bandwidths.  I think video over IP, and lidar 
streams over IP, would take advantage of that.

Why CoAP?

> The ambition is to create a protocol stack that would be 
> equally good in sending small sporadic bytes (sensor data) as well as 
> streaming infinite time-series (like live video) while ensuring good QoE 
> despite being low on resource consumption.

But such a multi-feature protocol is also claimed by Google with QUIC 
protocol.  Why not QUIC?

> The draft is available here: 
> https://tools.ietf.org/html/draft-bhattacharyya-core-a-realist-00
> 
> Probably, the use case that we had in mind and the technology we 
> proposed, both can be extended to the purview of this WG.
> 
> Requesting your views on this draft please.. If relevant then we can 
> present this draft in Prague.

I can look at the draft, but I need to understand why CoAP?

Video per se is not a sufficient reason to use CoAP, I think.

(and yes, I do agree there are strong IP requirements for video in 
drones, like multi-cameras, multiple laser, infrared, and others)

Alex

> 
> Here is the abstract for your ready reference:
> 
>     This draft presents extensions to Constrained Application Protocol
>     (CoAP) to enable RESTful Real-time Live Streaming for improving the
>     Quality of Experience (QoE) for delay-sensitive Internet of Things
>     (IoT) applications. The overall architecture is termed ''Adaptive
>     RESTful Real-time Live Streaming for Things (A-REaLiST)''. It is
>     particularly designed for applications which rely on real-time
>     augmented vision through live First Person View (FPV) feed from
>     constrained remote agents like Unmanned Aerial Vehicle (UAV), etc.
>     These extensions provide the necessary hooks to help solution
>     designers ensure low-latency transfer of streams and, for contents
>     like video, a quick recovery from freeze and corruption without
>     incurring undue lag. A-REaLiST is an attempt to provide an
>     integrated approach to maintain the balance amongst QoE, resource-
>     efficiency and loss resilience. It provides the necessary hooks to
>     optimize system performance by leveraging contextual intelligence
>     inferred from instantaneous information segments in flight. These
>     extensions equip CoAP with a standard for efficient RESTful
>     streaming for Internet of Things (IoT) contrary to HTTP-streaming in
>     conventional Internet.
> 
> 
> 
> 
> Thank you. Looking forward.
> 
> P.S. The work has been accepted and presented in Wi-UAV workshop in 
> Globecom, Dec,  2018. The public link to the paper is yet to be available.
> 
> With Best Regards
> Abhijan Bhattacharyya
> Consultant / Scientist,
> {Internet Protocols | 5G | Standardization},
> TCS Research,
> Tata Consultancy Services
> Building 1B,Ecospace
> Plot -  IIF/12 ,New Town, Rajarhat,
> Kolkata - 700160,West Bengal
> India
> Ph:- [phone]
> Cell:- [phone] | [phone]
> Mailto: [e-mail] <mailto:[e-mail]>
> Website: http://www.tcs.com
> ____________________________________________
> Experience certainty. IT Services
> Business Solutions
> Consulting
> ____________________________________________
> 
> =====-----=====-----=====
> Notice: The information contained in this e-mail
> message and/or attachments to it may contain
> confidential or privileged information. If you are
> not the intended recipient, any dissemination, use,
> review, distribution, printing or copying of the
> information contained in this e-mail message
> and/or attachments to it are strictly prohibited. If
> you have received this communication in error,
> please notify us by reply e-mail or telephone and
> immediately and permanently delete the message
> and any attachments. Thank you
> 
> 
> _______________________________________________
> its mailing list
> [e-mail]
> https://www.ietf.org/mailman/listinfo/its
>