Evaluation Test Cases for Interactive Real-Time Media over Wireless Networks
RFC 8869
Document | Type | RFC - Informational (January 2021; No errata) | |
---|---|---|---|
Authors | Zaheduzzaman Sarker , Xiaoqing Zhu , Jian Fu | ||
Last updated | 2021-01-18 | ||
Replaces | draft-fu-rmcat-wifi-test-case, draft-sarker-rmcat-cellular-eval-test-cases | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html xml pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Colin Perkins | ||
Shepherd write-up | Show (last changed 2019-09-29) | ||
IESG | IESG state | RFC 8869 (Informational) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Mirja Kühlewind | ||
Send notices to | Colin Perkins <csp@csperkins.org> | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | No IANA Actions |
Internet Engineering Task Force (IETF) Z. Sarker Request for Comments: 8869 Ericsson AB Category: Informational X. Zhu ISSN: 2070-1721 J. Fu Cisco Systems January 2021 Evaluation Test Cases for Interactive Real-Time Media over Wireless Networks Abstract The Real-time Transport Protocol (RTP) is a common transport choice for interactive multimedia communication applications. The performance of these applications typically depends on a well- functioning congestion control algorithm. To ensure a seamless and robust user experience, a well-designed RTP-based congestion control algorithm should work well across all access network types. This document describes test cases for evaluating performances of candidate congestion control algorithms over cellular and Wi-Fi networks. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are candidates for any level of Internet Standard; see Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc8869. Copyright Notice Copyright (c) 2021 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction 2. Cellular Network Specific Test Cases 2.1. Varying Network Load 2.1.1. Network Connection 2.1.2. Simulation Setup 2.1.3. Expected Behavior 2.2. Bad Radio Coverage 2.2.1. Network Connection 2.2.2. Simulation Setup 2.2.3. Expected Behavior 2.3. Desired Evaluation Metrics for Cellular Test Cases 3. Wi-Fi Networks Specific Test Cases 3.1. Bottleneck in Wired Network 3.1.1. Network Topology 3.1.2. Test/Simulation Setup 3.1.3. Typical Test Scenarios 3.1.4. Expected Behavior 3.2. Bottleneck in Wi-Fi Network 3.2.1. Network Topology 3.2.2. Test/Simulation Setup 3.2.3. Typical Test Scenarios 3.2.4. Expected Behavior 3.3. Other Potential Test Cases 3.3.1. EDCA/WMM usage 3.3.2. Effect of Heterogeneous Link Rates 4. IANA Considerations 5. Security Considerations 6. References 6.1. Normative References 6.2. Informative References Contributors Acknowledgments Authors' Addresses 1. Introduction Wireless networks (both cellular and Wi-Fi [IEEE802.11]) are an integral and increasingly more significant part of the Internet. Typical application scenarios for interactive multimedia communication over wireless include video conferencing calls in a bus or train as well as live media streaming at home. It is well known that the characteristics and technical challenges for supporting multimedia services over wireless are very different from those of providing the same service over a wired network. Although the basic test cases as defined in [RFC8867] have covered many common effects of network impairments for evaluating RTP-based congestion control schemes, they remain to be tested over characteristics and dynamics unique to a given wireless environment. For example, in cellular networks, the base station maintains individual queues per radio bearer per user hence it leads to a different nature of interactions between traffic flows of different users. This contrasts with a typical wired network setting where traffic flows from all users share the same queue at the bottleneck. Furthermore, user mobility patterns in a cellular network differ from those in a Wi-Fi network. Therefore, it is important to evaluate the performance of proposed candidate RTP-based congestion control solutions over cellular mobileShow full document text