Wave and Equation Based Rate Control (Webrc) Building Block

By Luby, M.

Book Id: WPLBN0000694308
Format Type: PDF eBook:
File Size: 0.1 MB
Reproduction Date: 2005

Title:	Wave and Equation Based Rate Control (Webrc) Building Block
Author:	Luby, M.
Volume:
Language:	English
Subject:	Probability Theory, Mathematical Statistics, Math
Collections:	Technical eBooks and Manuals Collection, Technical eBooks Collection
Historic Publication Date:
Publisher:


Citation APA MLA Chicago Luby, B. M. (n.d.). Wave and Equation Based Rate Control (Webrc) Building Block. Retrieved from http://gutenberg.cc/

Description
Technical Reference Publication

Excerpt
Introduction: This document specifies Wave and Equation Based Rate Control (WEBRC). WEBRC is a congestion control building block that is designed to be massively scalable when used with the IP multicast network service. WEBRC is also suitable as the basis for unicast congestion control, but this is outside the scope of this document. WEBRC is designed to compete fairly with TCP and similar congestion-controlled sessions. WEBRC can be used as a congestion control protocol for any type of data delivery, including reliable content delivery and streaming delivery.

Table of Contents
Table of Contents 1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Rationale . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Functionality . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1. Sender Operation . . . . . . . . . . . . . . . . . . . . 9 3.1.1. Sender inputs and initialization. . . . . . . . . 9 3.1.2. Sending packets to the session. . . . . . . . . . 10 3.2. Receiver Operation . . . . . . . . . . . . . . . . . . . 12 3.2.1. Receiver inputs and initialization. . . . . . . . 12 3.2.2. Receiver measurements and calculations. . . . . . 13 3.2.2.1. Average loss probability . . . . . . . . 13 3.2.2.2. Average round-trip time. . . . . . . . . 16 3.2.2.3. Rate Equation. . . . . . . . . . . . . . 16 3.2.2.4. Epochs . . . . . . . . . . . . . . . . . 17 3.2.2.5. Average reception rate . . . . . . . . . 17 3.2.2.6. Slow start . . . . . . . . . . . . . . . 19 3.2.2.7. Target rate. . . . . . . . . . . . . . . 20 3.2.3. Receiver events . . . . . . . . . . . . . . . . . 20 3.2.3.1. Packet reception . . . . . . . . . . . . 20 3.2.3.2. First packet after join. . . . . . . . . 20 3.2.3.3. Time slot change . . . . . . . . . . . . 20 3.2.3.4. Loss event . . . . . . . . . . . . . . . 21 3.2.3.5. Epoch change . . . . . . . . . . . . . . 21 3.2.3.6. Join the next higher layer . . . . . . . 21 3.2.3.7. Join timeout . . . . . . . . . . . . . . 23 3.2.3.8. Exceptional timeouts . . . . . . . . . . 23 4. Applicability Statement . . . . . . . . . . . . . . . . . . . 23 4.1. Environmental Requirements and Considerations. . . . . . 23 5. Packet Header Fields. . . . . . . . . . . . . . . . . . . . . 25 5.1. Short Format Congestion Control Information. . . . . . . 26 5.2. Long Format Congestion Control Information . . . . . . . 27 6. Requirements From Other Building Blocks . . . . . . . . . . . 28 7. Security Considerations . . . . . . . . . . . . . . . . . . . 28 8. References. . . . . . . . . . . . . . . . . . . . . . . . . . 29 8.1. Normative References . . . . . . . . . . . . . . . . . . 29 8.2. Informative References . . . . . . . . . . . . . . . . . 30 9. Authors' Addresses. . . . . . . . . . . . . . . . . . . . . . 31 10. Full Copyright Statement. . . . . . . . . . . . . . . . . . . 32