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UPnP™ QoS WC Progress

UPnP™ QoS WC Progress. Narm Gadiraju Co-Chair of UPnP™ QoS WC Intel Corporation. Internet. Solution: QoS Managed Network. Problem: Unmanaged Network. Internet Gateway Device. Kid’s Room. Printer. PC/MC. Media Room. Agenda. Why do we need QoS in the home network?

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UPnP™ QoS WC Progress

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  1. UPnP™ QoS WC Progress Narm Gadiraju Co-Chair of UPnP™ QoS WC Intel Corporation

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

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

  4. Why do we need QoS in the Home Network? • AV streams are real time, bandwidth intensive and cannot tolerate network latencies • Games are even more jitter and delay sensitive • Best effort delivery can not ensure satisfactory user experience • Home network consists of heterogeneous media implementing different QoS mechanisms such as wired (802.3) and wireless (802.11) Ethernet Entertainment and Data Networks are Converging

  5. Home IP Network QoS Functions QoS Function 20Mb/s, HD stream 8 Mb/s, SD stream Discover Device QoS capabilities Describe Content QoS requirements 8 Mb/s, SD stream Admission decision at setup time Policy Enforcement Admission decision at run time. WAN to LAN QoS Mapping.

  6. UPnP™ QoS WC • Formed in January of 2003 under UPnP™ • Participating Companies: • Intel, Linksys (Cisco), Microsoft, Sony, Sharp, Thomson, Philips, Broadcom, Cogency etc. • Three committed reference implementers • Work Completed • Usage scenarios • Problem definition • Technical Requirements • Architecture definition in progress • Target completion: Q2, 2004

  7. Scope • Scenarios • AV distribution in the home network. • IGD QoS scenario and translation (mapping) between broadband service provider QoS (i.e., WAN) requirements and UPnP QoS (i.e., LAN) requirements • QoS Functions • Device QoS characteristics • Enable admission control • Enforce policy • Provide WAN to LAN QoS mapping • Non Goals • New Layer 2/Layer 3 QoS technologies or Standards • Limitations • Requires that all IP network devices be UPnP™ compliant

  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 Sink Source UPnP™ QoS Device UPnP™ QoS Device UPnP™ AV UPnP™ AV UPnP™ QoS Device AV Subsystem QoS Subsystem AV Subsystem QoS Subsystem Intermediate Node 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 • Acquires • T-SPEC from UPnP™ CDS service • TrafficID from source device • Invokes QoS Manager service

  10. Policy Holder Service • Policy • controls allocation of network resources. • is used • to influence setting of packet priorities • to control admission of streams • Holds the user policy • UPnP QoS importance number • Mapped to {TSPEC, Stream ID, UserID, and CP ID} • Assumptions • Centralized to the whole home LAN network • Defaults will NOT be provided by UPnP™ QoS • If there is no policy holder service, then UPnP™ QoS importance number will be the same for every stream. Hence QoS manager will use first-come first-served policy

  11. Device Service • Provide Discoverable Information • Static, examples: Device Type, admission control supported, network technology type etc., • Stream setup • Respond to path determination queries • Provide action to admit a stream based on device resources • Stream status feedback • Setup time • Run time

  12. QoS Manager Service • Get policy info from Policy holder service • Stream Configuration and Setup • Identify Path (Source, Sink and Intermediate Devices) • Provide Traffic ID, and additional information such as UserID, Content, CP ID to QoS devices • Stream Runtime adjustments • Events, such as CP input, Network events or change in content TSPEC from source • Modifies streams based on Policy Changes • Stream tear down UPnP™ will provide mechanisms for enabling QoS in the home network

  13. Summary • Entertainment and Data Networks are Converging • Managing QoS in the Home Network is Essential for Positive User Experience • UPnP™ will provide mechanisms for enabling QoS in the home network

  14. For the interconnected lifestyle

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