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

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Presentation on theme: "Quality of Service Update Management of Quality of Service for Multimedia Narm Gadiraju Intel Co-Chair QoS Working Committee."— Presentation transcript:

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

2 PC/MC Media Room Internet Internet Gateway Device Printer Child’s 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 Internet Gateway Device Packet Forwarding (802.1P) Host 1B Host 1C Host 2A Host 2N Host 3 Policy (UPnP QoS) Media Access (WMM, e) Broadband Access (WAN)

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

7 UPnP™ QoS Scope Scenarios  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) Home LAN UPnP™ AV Subsystem Source UPnP™ Control Point Beatles Madonna Pavarotti play,stop… UPnP™ QoS Device UPnP™ AV Subsystem UPnP™ QoS Device UPnP™ QoS Device QoS Subsystem QoS Subsystem Intermediate Node Stream1 - 5 Stream2 - 6 UPnP™ Policy Holder UPnP™ QoS Manager 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 Sink

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 Policy  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

12 QoS Device Service Provide Discoverable Information  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


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