Deadline-aware Transport Protocol
draft-shi-quic-dtp-03
QUIC Y. Cui
Internet-Draft Z. Liu
Intended status: Informational H. Shi
Expires: July 25, 2021 J. Zhang
Tsinghua University
K. Zheng
W. Wang
Huawei
January 21, 2021
Deadline-aware Transport Protocol
draft-shi-quic-dtp-03
Abstract
This document defines Deadline-aware Transport Protocol (DTP) to
provide block-based deliver-before-deadline transmission. The
intention of this memo is to describe a mechanism to fulfill
unreliable transmission based on QUIC as well as how to enhance
timeliness of data delivery.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on July 25, 2021.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Conventions . . . . . . . . . . . . . . . . . . . . . . . 2
2. Motivation . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Design of DTP . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. Abstraction . . . . . . . . . . . . . . . . . . . . . . . 4
3.2. Architecture of DTP . . . . . . . . . . . . . . . . . . . 5
3.3. Deadline-aware Scheduler . . . . . . . . . . . . . . . . 7
3.4. Deadline-aware Redundancy . . . . . . . . . . . . . . . . 7
3.5. Loss Detection and Congestion Control . . . . . . . . . . 9
4. Extension of QUIC . . . . . . . . . . . . . . . . . . . . . . 9
4.1. New Frame: BLOCK_INFO Frame . . . . . . . . . . . . . . . 10
4.2. Adjusted QUIC Frame: Timestamped ACK Frame . . . . . . . 10
4.3. Redundancy Packet . . . . . . . . . . . . . . . . . . . . 11
5. DTP Use Cases . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1. Block Based Real Time Application . . . . . . . . . . . . 12
5.2. API of DTP . . . . . . . . . . . . . . . . . . . . . . . 12
5.2.1. Data Transmission Functions . . . . . . . . . . . . . 13
5.2.2. Feedback Functions . . . . . . . . . . . . . . . . . 15
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 16
7. Security Considerations . . . . . . . . . . . . . . . . . . . 16
8. Normative References . . . . . . . . . . . . . . . . . . . . 16
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 16
1. Introduction
Many emerging applications have the deadline requirement for their
data transmission. However, current transport layer protocol like
TCP [RFC0793] and UDP [RFC0768] only provide primitive connection
establishment and data sending service. This document proposes a new
transport protocol atop QUIC [QUIC] to deliver application data
before end-to-end deadline.
1.1. Conventions
The keywords MUST, MUST NOT, REQUIRED, SHALL, SHALL NOT, SHOULD,
SHOULD NOT, RECOMMENDED, NOT RECOMMENDED, MAY, and OPTIONAL, when
they appear in this document, are to be interpreted as described in
[RFC2119].
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