1. End-to-End QoS awareness for admission control
Month Year
doc.: IEEE yy/xxxxr0
July 2007
End-to-End QoS awareness for admission control
Date:
Authors:
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Lei Du, NTT DoCoMo
John Doe, Some Company

2. Month Year
doc.: IEEE yy/xxxxr0
July 2007
Abstract
This presentation will discuss the End-to-End (E2E) QoS aware admission control scenarios between WLAN and external networks to improve the user satisfaction.
Lei Du, NTT DoCoMo
John Doe, Some Company

3. Motivation User satisfaction Admission control
Month Year
doc.: IEEE yy/xxxxr0
July 2007
Motivation
User satisfaction
- describes how the application is perceived by the end-users.
- is determined by E2E QoS parameters as defined in ITU-T G.1010[1], including delay, delay jitter, packet loss rate, etc.
⇒ E2E QoS awareness needs to be considered in WLAN.
Admission control
- has been used to achieve QoS awareness.
- is defined in e by using ADDTS request/response frame exchange.
- takes into account of current traffic status within a BSS or multiple BSSs if the AP switch is deployed.
⇒ E2E QoS aware admission control will improve users satisfaction.
[1] ITU-T Rec. G.1010 (11/2001), End-user multimedia QoS categories
Lei Du, NTT DoCoMo
John Doe, Some Company

4. What is E2E QoS awareness?
Month Year
doc.: IEEE yy/xxxxr0
July 2007
What is E2E QoS awareness?
Conversational Voice:
Typical data rate: 4-64kbps
One-way delay: <150ms (preferred)
<400ms (limit)
Delay variation: <1ms
Packet Loss rate: <3%
E2E QoS
Typical data amount: <10 kB
One-way delay: several minutes
Packet loss rate: 0
STA1
WLAN
MT1
SSPN/Internet
Per-BSS QoS
Cellular
Conversational Voice:
Typical data rate: 4-64kbps
One-way delay: <30ms (preferred)
<50ms (limit)
Delay variation: <1ms
Packet Loss rate: <3%
Lei Du, NTT DoCoMo
John Doe, Some Company

5. Admission Control Admission Control
Month Year
doc.: IEEE yy/xxxxr0
July 2007
Admission Control
User Authorisation Information
(from SSPN)
Admission
Control
Wireless Link (BSS)
Traffic Information
Control
SSPN information:
load at other APs or SSPN (how?)
Admission control within one BSS is proposed in e.
BUT
How does .11e interact with other admission control decisions of external networks?
What are the impacts on user experience (source STA/MT and destination STA/MT)?
Reference : wng-interworking-mac-issues.ppt
Lei Du, NTT DoCoMo
John Doe, Some Company

6. What’s benefits from E2E QoS aware admission control? (1/2)
Month Year
doc.: IEEE yy/xxxxr0
July 2007
What’s benefits from E2E QoS aware admission control? (1/2)
BSS Admission Capacity:
Admission capacity will be adaptive to accept or reject additional transmission
e.g., Total Delay 200ms
SSPN/Internet
STA1
MT1
Cellular
WLAN
Aggregate Delay ms
Tolerable Delay ms
E2E QoS aware admission control can increase/decrease the BSS admission capacity adaptively to meet E2E QoS requirements at the user.
Lei Du, NTT DoCoMo
John Doe, Some Company

7. What’s benefits from E2E QoS aware admission control? (2/2)
Month Year
doc.: IEEE yy/xxxxr0
July 2007
What’s benefits from E2E QoS aware admission control? (2/2)
WLAN Admission Control
Individual Admission Control
Cellular Admission Control
SSPN/Internet
STA1
MT1
QoS parameter setting:
Unified QoS parameter setting can be used among heterogeneous access networks.
Cellular
WLAN
e.g., Voice: Access Delay parameter, Data: Packet Error Rate
E2E QoS aware Request: PER 3%
E2E QoS aware admission control may use an unified QoS aware parameter setting among heterogeneous access networks depending on the traffic classes. This unified parameter setting will improve the end-user satisfaction.
Lei Du, NTT DoCoMo
John Doe, Some Company

8. Summary and Recommendation
Month Year
doc.: IEEE yy/xxxxr0
July 2007
Summary and Recommendation
E2E QoS aware admission control will
Improve user experience in the application layer
Adjust the WLAN admission capacity adaptively without violating QoS of ongoing connections.
Use unified methodology for E2E QoS parameter setting among heterogeneous access networks to meet end-user satisfaction.
Lei Du, NTT DoCoMo
John Doe, Some Company

9. Thanks & Questions July 2007 Month Year doc.: IEEE 802.11-yy/xxxxr0
Lei Du, NTT DoCoMo
John Doe, Some Company

10. Month Year
doc.: IEEE yy/xxxxr0
July 2007
Straw Poll
Should Task Group U receive further presentations of methods supporting E2E QoS aware for admission control?
Yes: No:
Lei Du, NTT DoCoMo
John Doe, Some Company