%% You should probably cite draft-kaippallimalil-tsvwg-media-hdr-wireless-05 instead of this revision. @techreport{kaippallimalil-tsvwg-media-hdr-wireless-01, number = {draft-kaippallimalil-tsvwg-media-hdr-wireless-01}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-kaippallimalil-tsvwg-media-hdr-wireless/01/}, author = {John Kaippallimalil and Sri Gundavelli}, title = {{Media Header Extensions for Wireless Networks}}, pagetotal = 18, year = 2023, month = feb, day = 20, abstract = {Wireless networks like 5G cellular or Wi-Fi experience significant variations in link capacity over short intervals due to wireless channel conditions, interference, or the end-user's movement. These variations in capacity take place in the order of hundreds of milliseconds and is much too fast for end-to-end congestion signaling by itself to convey the changes for an application to adapt. Media applications on the other hand demand both high throughput and low latency, and are able to dynamically adjust the size and quality of a stream to match available network bandwidth. However, catering to such media flows over a radio link where the capacity changes rapidly requires the buffers and QoS in general to be managed carefully. This draft proposes additional information about the media transported in each packet to manage the buffers and optimize the scheduling of radio resources. The set of information proposed here includes importance of the packet, burst length and time budget to be conveyed by the media application in a new UDP option. The metadata in the UDP option is used to provide the wireless network the flexibility to prioritize packets that are essential when the radio capacity is temporarily low, defer packets that can tolerate some additional delay, or even drop packets selectively in more extreme conditions. This draft defines media metadata, a new UDP option to carry this metadata and the operational aspects for using it between a UDP source and a on-path wireless entity.}, }