Mobile Communication Congestion Exposure Scenario
RFC 7778
Internet Engineering Task Force (IETF) D. Kutscher
Request for Comments: 7778 F. Mir
Category: Informational R. Winter
ISSN: 2070-1721 NEC
S. Krishnan
Ericsson
Y. Zhang
Hewlett Packard Labs
CJ. Bernardos
UC3M
March 2016
Mobile Communication Congestion Exposure Scenario
Abstract
This memo describes a mobile communications use case for congestion
exposure (ConEx) with a particular focus on those mobile
communication networks that are architecturally similar to the 3GPP
Evolved Packet System (EPS). This memo provides a brief overview of
the architecture of these networks (both access and core networks)
and current QoS mechanisms and then discusses how congestion exposure
concepts could be applied. Based on this discussion, this memo
suggests a set of requirements for ConEx mechanisms that particularly
apply to these mobile 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 a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7778.
Kutscher, et al. Informational [Page 1]
RFC 7778 ConEx Mobile Scenario March 2016
Copyright Notice
Copyright (c) 2016 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 (http://trustee.ietf.org/license-info) in effect on the
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Acronyms . . . . . . . . . . . . . . . . . . . . . . . . 4
2. ConEx Use Cases in Mobile Communication Networks . . . . . . 4
2.1. ConEx as a Basis for Traffic Management . . . . . . . . . 5
2.2. ConEx to Incentivize Scavenger Transports . . . . . . . . 7
2.3. Accounting for Congestion Volume . . . . . . . . . . . . 7
2.4. Partial vs. Full Deployment . . . . . . . . . . . . . . . 8
2.5. Summary . . . . . . . . . . . . . . . . . . . . . . . . . 9
3. ConEx in the EPS . . . . . . . . . . . . . . . . . . . . . . 9
3.1. Possible Deployment Scenarios . . . . . . . . . . . . . . 9
3.2. Implementing ConEx Functions in the EPS . . . . . . . . . 14
3.2.1. ConEx Protocol Mechanisms . . . . . . . . . . . . . . 15
3.2.2. ConEx Functions in the Mobile Network . . . . . . . . 15
4. Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5. Security Considerations . . . . . . . . . . . . . . . . . . . 19
6. Informative References . . . . . . . . . . . . . . . . . . . 19
Appendix A. Overview of 3GPP's EPS . . . . . . . . . . . . . . . 22
Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 24
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 24
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RFC 7778 ConEx Mobile Scenario March 2016
1. Introduction
Mobile data traffic continues to grow rapidly. The challenge
wireless operators face is to support more subscribers with an
increasing bandwidth demand. To meet these bandwidth requirements,
there is a need for new technologies that assist the operators in
efficiently utilizing the available network resources. Two specific
areas where such new technologies could be deemed useful are resource
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