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Uplink Intensive Usage Models

Uplink Intensive Usage Models. Authors:. Date: 2009-07-15. Abstract. This documents contains a set of Home Use Cases and Enterprise Use Cases which will typically drive a large amount of uplink (client to AP) traffic.

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Uplink Intensive Usage Models

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  1. Uplink Intensive Usage Models Authors: Date: 2009-07-15

  2. Abstract This documents contains a set of Home Use Cases and Enterprise Use Cases which will typically drive a large amount of uplink (client to AP) traffic.

  3. Uplink SDMA is one of the candidate technologies for consideration by TGac • Discussing the potential merits of Uplink SDMA brings up the question of the likelihood and importance of multiple simultaneous upstream traffic flows • This document contains an initial set of uplink intensive use cases for Home and Enterprise environments • This document references Usage Models contained in the 802.11ac Usage model document (doc. 09/0161r2) Context and Introduction

  4. Home Networking • Distributed Content Sources • Distributed STB Usage • Networked Home Scenario • Combination of models: • 2b Compressed video throughout home • 3a Synch • 3d Media content download to car • Other (e.g. Back Up application, Video Surveillance) Enterprise • Surveillance Car Video Upload • Usage model 3e in WFA VHT submission • Manufacturing Floor Automation • Usage model 6a in WFA VHT submission • Video Surveillance System • PC Data Back Up Overview of Uplink Intensive Usage Models

  5. Networked Home Scenario;Distributed Content Sources DTV1 STB1 Entertainment PC HDMI DTV2 STB2 HDMI • Usage Model Characteristics: • Each Link of HD Quality • DTV1 Uses HD Content from PC • DTV2 Uses Content from NAS Drive • DTV1, DTV2 and AP located in different parts of the home (AP centrally located in home) NAS Drive

  6. Networked Home Scenario;Distributed STB Usage DTV2 STB2 HDMI • Usage Model Characteristics: • Each Link of HD Quality • DTV1 Uses Content from STB2 • DTV2 Uses Content from STB1 • DTV1, DTV2 and AP all located in different parts of the home HDMI STB1 DTV1

  7. Combination of models: • 2b Compressed video throughout home • 3a Synch • 3d Media content download to car • Other: (e.g. Back Up application, Video Surveillance) • Source and Sink Devices spread throughout the home, sometimes challenging Propagation, e.g. Content download to Car Networked Home Scenario

  8. Networked Home Scenario CloudBack UpDrive Cable / DSLModem WLAN Bridge NAS Drive Kids Room Surveillance Video Cam IPTV Boxe.g. Roku HDTV IPTV Content SDTV Quality DTV1 HDTV Content Entertainment PC Automatic Hard Drive Back Up Camcorder HD Content DTV2 Kids Surveillance Monitor Smartphone pics upload Car Video Content Synch Car Video ContentServer Car Parked in Carport

  9. Home Networking • Distributed Content Sources • Distributed STB Usage • Networked Home Scenario • Combination of models: • 2b Compressed video throughout home • 3a Synch • 3d Media content download to car • Other (e.g. Back Up application, Video Surveillance) Enterprise • Surveillance Car Video Upload • Usage model 3e in WFA VHT submission • Manufacturing Floor Automation • Usage model 6a in WFA VHT submission • Video Surveillance System • PC Data Back Up Overview of Uplink Intensive Usage Models

  10. EnterpriseUsage Model 3e: Police / Surveillance Car Upload • Upload several 10s of GB of data (Video Surveillance footage) from surveillance car to content server police station • Multiple Surveillance Cars arrive and Upload at Station around the same time

  11. Usage Model 3e: Police / Surveillance Car Upload Pre-Conditions: Police / Surveillance Car is equipped with one or more SD or HD video cameras and a storage devices for video and other content. Connections between camera(s) and storage device are wired. Storage device is attached to a VHT radio. Car is also equipped with external antennas. Police station is equipped with a content server and VHT WLAN network. Application: Car comes within range of Station VHT AP, and new video and audio content is uploaded to the content server in the station. Depending on the resolution of the video and the duration of the footage collection, the amount of data to be uploaded can vary from a few GB’s to over 100 GB. 100GB takes ~13 minutes on 1Gbps single hop link. Environment: Environments variable; e.g. indoor garage, outdoor car port, car parked at curb. Size of station and construction materials used varies. Range/throughput expectation is high; deployment at station based on relative proximity to car parking lot / garage. Distance between AP and car likely to be 10 – 60 m, 1 – 3 walls. Objective is to minimize up times. Traffic Conditions: Presence of other Wi-Fi networks from neighboring businesses, government institutions or residences, is likely to occur. The video content upload will likely be using a dedicated VHT network. Multiple cars (up to 10) may be uploading at the same time. Use Case: • Surveillance officer turns on video cameras, typically at the beginning of the shift • Cameras capture footage, which gets stored on a storage device on board the surveillance car • Surveillance offers turns off video cameras, typically a the end of a shift • VHT radio in car detects that it comes in reach of VHT network to which is authorized to upload content (typically the network at the base station) • Assume multiple cars arriving at the same time and Uploading simultaneously • Content is uploaded for storage and viewing and analysis at a later point in time. 11

  12. Enterprise Usage Model 6: Manufacturing Floor Automation • Pre-Conditions: • A WLAN is operational in manufacturing space that has hundreds to thousands of individual tasks happening each minute. Many of these tasks require communications. • Application: • All types of information required to run large manufacturing floor. Large variances in data transfer size, time sensitivity, and reliability exist. Here are some examples: • Streaming of live or CAD video requires high throughput, time sensitive, and reliable transfers. • Voice requires lower bandwidth and time sensitive transfers; reliability is less of a concern. • Machine-machine communications, robotic material handling requires high reliability but is less time sensitive. • Data loading machines is high bandwidth but low in time sensitivity. Application layer protocols would ensure reliability. • Environment: • Communication is within a large metallic building. High reverberation, long propagation distances (10’s~100’s meters), long delay spreads. Constantly moving equipment changing RF propagation channel model. Traffic Conditions: • Hundreds or thousands of independent links and data streams with varying QoS, reliability, and throughput, requirements. Aggregate data flows range into multiple Gbps requirements. Use Case: • Multiple systems in factory; starting, stopping, and flowing network traffic in a largely asynchronous environment. • Some data flows have significant integrity requirements (large material-handling machines; cranes, crawlers, etc.) • Some data flows have significant QoS requirements (VoIP, Video streams, etc.) • Factory is VERY electrically noisy; spark-gap noise (electric motors, etc.), microwave ovens, other technologies (RFID, RTLS, etc.), and competing 802.x wireless systems. 12

  13. Example Topology for Manufacturing Floor Automation Usage Model (Portable) Software Source Software Sink (Portable)CAD Drawing Source CAD Drawing Sink Quallity Control Video Cam Surveillance Video Monitor Quality Assurance Video Monitor + Many Other Systems Generating Upstream and Downstream Traffic (see WFA VHT Use Case write up)

  14. Video Surveillance System Surveillance Video Cam Surveillance Video Cam Surveillance Video Cam Surveillance Video Monitor • Usage Model Characteristics: • Each Link of SDMA Quality (6 Mbps) • Simultaneous Video Streaming • Scales up to 20+ Video Cameras • Video Cams at varying distance from .11ac AP

  15. Enterprise PC Back Up NAS • Usage Model Characteristics: • Each Link Best Effort / Max Offer Load • Simultaneous Back Up to Enterprise NAS • Laptops at varying distance from .11ac AP

  16. Cursory analysis led to insights about a number of Use Cases driving intense upstream traffic • Depending on the physical lay-out of the network, TDLS will likely play a role in some of the cases presented as well • Powerful industry trends driving need for upstream WLAN traffic: • Cloud computing (locally generated content needs to be stored in the internet cloud) • Place shifting of digital content • Internet Peer to Peer networking • Lastly, limiting the number of antenna’s on client devices is a key requirement from WLAN enabled device vendors Closing Observations

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