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Concurrent Video and Data Streaming using IEEE 802.11ac Final Capstone Presentation Team # 5 Aesha Parikh Akhilesh Tinniyam Kannan Nilay Parikh Sree Sagar.

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Presentation on theme: "Concurrent Video and Data Streaming using IEEE 802.11ac Final Capstone Presentation Team # 5 Aesha Parikh Akhilesh Tinniyam Kannan Nilay Parikh Sree Sagar."— Presentation transcript:

1 Concurrent Video and Data Streaming using IEEE ac Final Capstone Presentation Team # 5 Aesha Parikh Akhilesh Tinniyam Kannan Nilay Parikh Sree Sagar Raghavendra Industry Advisor: John Blakely Principal Wireless Architect CenturyLink, Inc. Faculty Advisor: Dr. Thomas Schwengler Adjunct Instructor, EE Department University of Colorado Boulder

2 Introduction Background Increase in number of wireless clients in residential networks Higher quality of experience demanded by users Concurrent video and data streaming requirements n: Current state-of-the-art Large number of devices operating in 2.4GHz ac: Proposed technology 5GHz: Free and clear spectrum References: “802.11ac In-Depth,” WP_80211acInDepth_041414, Aruba Networks, Inc., Sunnyvale, CA, “Cisco Visual Networking Index: Global Mobile Data Traffic Forecast Update, 2013–2018,” Cisco.

3 Introduction Statement of Problem Concurrent Video and Data Streaming over n Transport protocol is TCP Jitter and Latency issues for Video streams SLA requirements not met Use of UDP as transport protocol n fails

4 Introduction Research Question Is ac a practical replacement for n for video and data distribution in a residential setting to address the performance issues of n? Are ac devices capable of simultaneously handling HD (High Definition) live video, VOD (Video on demand), and data streams while ensuring good quality of experience? Subproblems Satisfying QoS requirements for concurrent video and data streams Number of simultaneous data and video clients supported Throughputs achieved for TCP and UDP streams at different ranges in a residential setting

5 Introduction Extending the state-of-the-art | Novelty of research Previous research has shown that n fails for concurrent video and data streaming inside residential network Test case to support the large-scale roll-out of ac for this application ac has inherent advantages over n at the PHY and MAC layer (Channel size, Modulation, Beamforming) ac provides high throughputs to multiple clients, unlike n Test results to support the use of UDP as the transport protocol for video streams inside a residential network References: V. Vora and T. Brown, “High rate video streaming over n in dense Wi-Fi environments,” in 2010 IEEE 35th Conference on Local Computer Networks (LCN), pp. 1054–1061, M. Gast, ac: A Survival Guide. O’Reilly Media, Incorporated, 2013.

6 Introduction Successful project: Test results validates the research hypothesis One of the first works that focus on detailed testing for concurrent video and data streaming using ac Submitted paper to IEEE PIMRC conference (September 2014)

7 Test Setup Test Parameters ac Access Point – Carrier grade Number of transmitting antenna – 4 Channel width – 80MHz Channel number – 157 Number of iterations of each test – 10 Duration of each test – 60 seconds (IETF Recommended)

8 Test Setup Test location 1 Discovery Learning Center – University of Colorado Boulder Emulating residential setting Over-The-Air (OTA) Ixia’s IxChariot 7.30 | Xeon E Servers | ac AP Test location 2 CenturyLink, Inc. – Littleton, CO RF isolated chamber | Lab environment | Copper meshed walls IxiaVeriwave chassis | WaveQOE to generate traffic profiles

9 Test Setup Test locations

10 Research Methodology and Results Test 1: SLA Test - Setup Testing the performance of ac and n while conforming to stringent SLA requirements Maps to the first subproblem 20 clients emulating a residential network Protocols emulated: TCP, UDP, VoIP, RTP, RTPVideo Flow TypeSLA Metrics VoIPslaMode = R-Value-78 RTP VideoDelayFactor-15 ms, Mlr -0 pkts/min httpper flow-80% tcpper flow-80% udpLatency-20 ms, Jitter-20 ms, PacketLoss-0% rtpper flow-80%, Latency-20 ms, Jitter-20 ms, PacketLoss-0%

11 Research Methodology and Results Test 1: SLA Test – Results n802.11ac n802.11ac Flow Type Num Flows Latency (ms) Jitter (ms) % Packet Loss Latency (ms) Jitter (ms) % Packet Loss VoIP RTP Video ftp http tcp udp rtp

12 Research Methodology and Results Test 2: Maximum Client Test - Setup Identifying the maximum number of clients supported while satisfying SLA requirements Maps to the second subproblem The number of clients incremented linearly from 20 clients Heavily dependent on the DUT (Device Under Test) Test 2: Maximum Client Test - Results Maximum of 28 clients satisfied SLA for the DUT Simultaneous transmission of multiple protocols like FTP, UDP, TCP, VoIP, and RTP Video

13 Research Methodology and Results Test 3: Rate vs. Range Test - Setup Testing the effect of distance on the throughput of ac and n devices Maps to the third subproblem RSSI levels ranging from -45dBm to -75dBm Test 3: Rate vs. Range Test - Results

14 Research Methodology and Results Test 3: Rate vs. Range Test - Results

15 Discussion of Results Latency (13.2ms) and Jitter (1.5ms) satisfy IEEE specified SLA (20ms) and maintains a high QoE for the users (0 packets lost) Supports potential increase in the number of clients and rise in bandwidth requirements High throughputs values (400Mbps – 800Mbps) obtained at various RSSI levels within a residence Exposes the incompetence of n for the targeted application

16 Conclusion This presentation shows the throughput and QoS statistics for ac and n Test results support the use of UDP as a transport protocol for video streams in a residential WLAN ac is a practical replacement for n for concurrent video and data streaming ac can be widely deployed to provide better QoE for the users

17 Future Research This research can be used as a reference for ac testing Use of 160MHz channel when available Usage of MU-MIMO, which can further enhance the results Extension of this application for an enterprise setting Testing the impact of various codec algorithms on video bitrates

18 Acknowledgement Dr. Thomas Schwengler John Blakely Dr. Tim Brown Dr. David Reed Jose Santos Mark Dehus Zubin Ingah Tony Bieniek Bernie McKibben Steve Glennon Vikas Sarawat Neeharika Allanki Charles Cook Drumeel Thakkar

19 Thank You Group 5 TLEN 5710 Capstone University of Colorado Boulder


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