1. Quality of Service Update
Management of Quality of
Service for Multimedia
Narm Gadiraju
Intel
Co-Chair QoS Working Committee

2. Problem: Unmanaged Network Solution: QoS Managed Network
Internet
Internet Gateway Device
Child’s
Room
Printer
PC/MC
Media Room

3. OVERVIEW Why do we need QoS in the home network?
Home Network QoS Functions
UPnP™ QoS Architecture
UPnP™ QoS Working Committee

4. Why do we need QoS in the Home Network?
AV streams are real time, bandwidth intensive
Voice and Games are even more jitter and delay sensitive
Best effort delivery can not ensure satisfactory user experience
Entertainment and Data Networks are Converging

5. Where is QoS needed? Three primary QoS Design Guidelines:
Host 1A
Host 1B
Host 1C
Broadband Access (WAN)
Internet Gateway Device
Media Access (WMM, e)
Host 2A
Host 2N
QoS Media Access is the process of determining when a packet may be transmitted from one device into a network so as not to preclude the timely transmission of a packet on the media by another device.
QoS Packet Forwarding is the process of transmitting packets that have arrived from one or more network interfaces with a single device according to set of rules that provide QoS.
QoS Characteristic Management: A signaling and management mechanism for communication of QoS characteristics (priority settings) between the Residential Gateway and Hosts desiring QoS within a home network. This mechanism should be aggregated and managed in the Residential Gateway.
Policy
(UPnP QoS)
Packet Forwarding (802.1P)
Host 3

6. Home IP Network QoS Functions
WAN
Internet Gateway Device
AV Stream – 5
Voice – 6
Print Job – 1
Policy
Discover Device QoS Capabilities
Shrek
Terminator
Charade …
Content
Describe Content QoS Requirements
Policy
MPEG
Networked TV
Networked TV
STB
Cam
Ethernet (802.3) 802.1P QoS
Wi-Fi (802.11a/b/g) WMM QoS

7. UPnP™ QoS Scope Scenarios QoS Functions Non-Goals
AV distribution in the home network.
IGD used as an intermediate device (bridge) between network technologies
QoS Functions
Uniform assignment of priorities across multiple applications and devices (Policy)
Device QoS capabilities (Discovery)
Assignment of priority for a particular traffic stream based on its characteristics (Management)
Admission Control based on User Importance
Non-Goals
New Layer 2 / Layer 3 QoS technologies or standards

8. Architecture (Logical)2 3
UPnP™
Policy Holder
UPnP™
QoS Manager
UPnP™
Control
Point
Beatles
Madonna
Pavarotti
play,stop…
Stream1 - 5
Stream2 - 6 4
Home LAN 1 1
Source
Sink
UPnP™ AV
UPnP™ QoS
Device
UPnP™ QoS
Device
UPnP™ AV
UPnP™ QoS Device AV
Subsystem
QoS
Subsystem AV
Subsystem
Intermediate
Node
QoS
Subsystem
1. CP identifies source and sink
2. CP requests QoS Mgr for QoS connection
3. QoS Manager gets stream admission policy from Policy Holder component.
4. QoS Manager sets up QoS devices

9. Control Point Decides content to be streamed or data to be prioritized
Acquires
Traffic Type (AV, Gaming, Voice, Bulk, etc)
TrafficID from source and sink devices
Destination IP address and Port
Source IP address and Port
Optional T-SPEC from UPnP™ AV CDS service
Invokes QoS Manager service

10. QoS Manager Service Get policy info from QoS Policy Holder service
Stream Configuration and Setup
Identify Path (Source, Sink and Intermediate Devices)
Provide Traffic ID, and Traffic Descriptor to QoS devices
Stream Runtime adjustments and Stream tear down from Control point input

11. QoS Policy Holder Service
Controls allocation of network resources
Influences setting of packet priorities
Controls admission of streams
Policy Holder Service
Based on (TSPEC, Traffic ID, Traffic Class and other optional information)
Returns (User importance number, Traffic Importance Number, Admission Control Enabled/Disabled state)
Assumptions
There will be only one Policy Holder service in the home network
If no policy holders are discovered, or more than one policy holders are discovered, UPnP™ QoS uses default (802.1d) priorities
Presenter to indicate that
- Policy is similar firewall or parental control.

12. QoS Device Service Provide Discoverable Information Stream setup
Static: examples: device type, admission control supported, network technology type, IP address, etc.
Dynamic: examples: number of traffic streams, bandwidth
Stream setup
Respond to path determination queries
Respond to QoS Manager queries for static/dynamic QoS information
Device status feedback
Setup time
Path Change Eventing

13. UPnP™ QoS Working Committee
HISTORY
Formed in January of 2003 under UPnP™ Forum.
Participating Companies:
Intel, Broadcom, Linksys (Cisco), Sony, Sharp, Philips, CableLabs, LGE, BellSouth
STATUS
Four committed reference implementers
Three successful plug-fests held
Architecture definition completed
Reference Implementations and Service Definitions close to completion
Target completion: Q3, 2004

14. Foundation of the Connected Home