Project
IEEE 802.20 Working Group on Mobile Broadband Wireless Access
<http://grouper.ieee.org/groups/802/20/>
Title
802.20 Traffic Models Update
Date
Submitted
2004-01-05
Source(s)
Farooq Khan
67 Whippany Road
Whippany, NJ 07981
Re:
MBWA Call for Contributions: Session # 6 – January 12-16, 2003
Abstract
This contribution summarizes the status of 802.20 traffic models group activities.
Purpose
Review and Adopt
Notice
Release
Patent
Policy
Voice: +1 973 386 5434
Fax: +1 973 386 4555
Email: [email protected]
This document has been prepared to assist the IEEE 802.20 Working Group. It is offered as a basis for
discussion and is not binding on the contributing individual(s) or organization(s). The material in this
document is subject to change in form and content after further study. The contributor(s) reserve(s) the right
to add, amend or withdraw material contained herein.
The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this
contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in
the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution;
and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE
Standards publication. The contributor also acknowledges and accepts that this contribution may be made
public by IEEE 802.20.
The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards
Board Operations Manual <http://standards.ieee.org/guides/opman/sect6.html#6.3> and in Understanding
Patent Issues During IEEE Standards Development <http://standards.ieee.org/board/pat/guide.html>.
802.20 Traffic Models Update
Farooq Khan
IEEE 802.20 Interim Meeting
Vancouver, BC, Canada
January 12-16, 2004
Traffic Models Status
C802.20-04/20
• Once conference call (12/2) since the
November Plenary
• The discussion focused on the following
items:
– Specification of traffic mix
– Higher layer protocol models
– FTP traffic model
– Full buffers (Infinite backlog) model
– Mobile station buffer size considerations
– VoIP Traffic model
– Wireless multi-party Gaming traffic model
– User scenarios
-3-
Specification of traffic mix
C802.20-04/20
• Traffic modeling group foresees scenarios
where various traffic types are simulated
simultaneously.
• Currently only a list of traffic types is provided
– Issue of percentage of various traffic types in a
mixed scenario is still open.
• Contributions invited on possible traffic mix
scenarios (percentage of different traffic
types) and potential phases of simulations etc.
-4-
Higher layer protocol models
C802.20-04/20
• Input on higher layer protocols for applications
other than web browsing.
• For web browsing application, the consensus is
to use HTTP/1.1 protocol.
-5-
FTP traffic model
C802.20-04/20
• The group discussed if the current model is a
realistic representation of an FTP user
behavior in practice.
• In particular, it was questioned if "think time"
applies to the FTP model the same way as the
web browsing model.
– For FTP, another request can be generated while the
previous file is downloading in the background.
• Contributions on whether we need to modify
the existing FTP traffic model.
-6-
Full buffers model
C802.20-04/20
• Full buffers is currently not considered as a
traffic type
• Input on whether we need to include a
simulation case with Full buffers traffic only.
– For example, a first stage simulation for “calibration”
purposes.
-7-
Mobile station buffer size
C802.20-04/20
• The group discussed if the mobile station
buffer size limitations need to be considered in
the evaluation phase.
• Two options were pointed out:
– Adding a maximum buffer size constraint or
– Allowing infinite buffer size with average and
distribution of buffer occupancy collected as output
metrics.
• It was also mentioned that requirements on
delay and jitter may already capture the buffer
limitation aspect and it is not necessary to
include any buffer size constraint separately.
-8-
VoIP Traffic model
C802.20-04/20
• VoIP is one of the traffic types to be simulated
in the 802.20 evaluation.
• Currently, there is no model specified for the
VoIP traffic.
• Contributions are invited on potential VoIP
models suitable for 802.20 air-interface
evaluation.
-9-
Wireless Gaming traffic model
C802.20-04/20
• Wireless multi-party wireless gaming is an
important application that needs to be
considered in 802.20 system evaluation.
• Input required on mobile wireless gaming
models.
-10-
User scenarios
C802.20-04/20
• The group discussed if:
– all the user scenarios (Laptop, PDA, Smart phone,
machine-to-machine) need to be considered or
– only a subset of the user scenarios can be simulated.
• In order to capture different user scenarios,
parameters values of some traffic models (e.g.
web browsing) would be adapted to the user
scenario
– For example, heavy, medium or light web browsing
application.
-11-