Updated: April 30, 2004
This document provides information about Quality of Service (QoS) support for audio-video (A/V) scenarios on home IP networks for the Microsoft® Windows®, codenamed "Longhorn" operating system. It describes the Quality Windows Audio/Video Experience (qWave) framework and provides guidelines for independent hardware vendors (IHVs) and independent software vendors (ISVs) to develop solutions that support this framework.
For the purposes of this document, QoS refers to the mechanisms used to provide a desired level of network service to an application on IP-based networks. The network service parameters may include bandwidth, jitter, latency, and packet loss. The desired level of network service can be achieved by explicitly reserving bandwidth on the network or by providing preferential service to selected network traffic while providing best-effort service to all other traffic.
The focus of this document is QoS for traffic that travels within the home. In particular, this document describes QoS for A/V streaming traffic that competes with other data and best-effort traffic and QoS for wireless (Wi-Fi) home networks. The Longhorn release will provide a QoS solution, codenamed Quality Windows Audio Video Experience (qWave), to support home network scenarios such as these.
This information applies to the following operating systems:
The next version of Microsoft Windows codenamed "Longhorn"
Included in this white paper:
• History of QoS in Windows
• Home Audio/Video Streaming Scenarios
• Wireless Home Networks and Audio/Video Streaming
• Quality Windows Audio Video Experience (qWave)
• References
ZITAT
This document provides the following information about Quality of Service (QoS) for audio and video (A/V) scenarios on home networks using Windows Longhorn.
· History of QoS in Windows operating systems.
· Home A/V streaming scenarios.
· Wireless home networks and A/V streaming.
· Quality Windows Audio Video Experience (qWave).
· Requirements for independent hardware vendors (IHVs), independent software vendors (ISVs), and OEMs who want to develop home networking solutions.
For the purposes of this document, QoS refers to the mechanisms used to provide a desired level of network service to an application on IP-based networks. The network service parameters may include bandwidth, jitter, latency, and packet loss. The desired level of network service can be achieved by explicitly reserving bandwidth on the network or by providing preferential service to selected network traffic while providing best-effort service to all other traffic.
The next release of the Windows operating system, codenamed “Longhorn,” will address QoS requirements for the following scenarios (Figure 1):
· Traffic that travels within the home.
· Traffic that travels into or outside of the home using broadband connections.
· Traffic that travels within an enterprise environment.
Figure 1: Network QoS Scenarios in Longhorn Timeframe
The focus of this document is QoS for traffic that travels within the home. In particular, this document describes QoS for A/V streaming traffic that competes with other data and best-effort traffic and QoS for wireless (Wi-Fi) home networks. The Longhorn release will provide a QoS solution, codenamed Quality Windows Audio Video Experience (qWave), to support home network scenarios such as these.
· History of QoS in Windows operating systems.
· Home A/V streaming scenarios.
· Wireless home networks and A/V streaming.
· Quality Windows Audio Video Experience (qWave).
· Requirements for independent hardware vendors (IHVs), independent software vendors (ISVs), and OEMs who want to develop home networking solutions.
For the purposes of this document, QoS refers to the mechanisms used to provide a desired level of network service to an application on IP-based networks. The network service parameters may include bandwidth, jitter, latency, and packet loss. The desired level of network service can be achieved by explicitly reserving bandwidth on the network or by providing preferential service to selected network traffic while providing best-effort service to all other traffic.
The next release of the Windows operating system, codenamed “Longhorn,” will address QoS requirements for the following scenarios (Figure 1):
· Traffic that travels within the home.
· Traffic that travels into or outside of the home using broadband connections.
· Traffic that travels within an enterprise environment.
Figure 1: Network QoS Scenarios in Longhorn Timeframe
The focus of this document is QoS for traffic that travels within the home. In particular, this document describes QoS for A/V streaming traffic that competes with other data and best-effort traffic and QoS for wireless (Wi-Fi) home networks. The Longhorn release will provide a QoS solution, codenamed Quality Windows Audio Video Experience (qWave), to support home network scenarios such as these.
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