Test Results of Relayed CCA Mechanism for UL Random Access in TGbb
This document presents test results of the Relayed CCA mechanism for UL random access in TGbb, including throughput performance, PER, and test setups. The tests show improvements in UL throughput and discuss fairness among STAs. However, some significant loss in QoS due to PER is noted. Authors from pureLiFi and Hyperion Tech collaborated on this research.
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April 2021 doc.: IEEE 802.11-21/0722r1 Test results of Relayed CCA mechanism for UL random access in TGbb Date: 2021-04-14 Authors: Name Company Address Phone Email Nikola Serafimovski pureLiFi nikola.serafimovski @purelifi.com Tamas Weszely pureLiFi tamas.weszely@pur elifi.com Chong Han pureLiFi Chong.han@purelif i.com Mostafa Afgani pureLiFi mostafa.afgani@pu relifi.com Tuncer Baykas Has University and Hyperion Tech tbaykas@ieee.org Murat Uysal Hyperion Tech Submission Slide 1 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Abstract This contribution contains test results of the Relayed CCA mechanism proposed in doc. 11-21/0280r2. Submission Slide 2 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Overview Test setup Test results - Throughput Test results - PER Submission Slide 3 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Test setup (1) Distance between LC AP and non-AP LC STAs: 0.8m Chipset: IEEE 802.11ac Wave 2 Channel bandwidth: 80MHz Traffic model: satuarated UDP on non-AP LC STA side RTS/CTS is on all the time Relayed CCA is switched on/off alternating LC AP UL repeater STAs (STA1, STA2, STA3) Submission Slide 4 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Test setup (2) LC AP UL Repeater UL traffic only non-AP LC STA2 non-AP LC STA3 non-AP LC STA1 Submission Slide 5 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Test results Throughput (1) Total UL throughput measured at AP (3 STAs) 100% improvement Actions: - Turn on the LC AP - Turn on non-AP LC STAs one by one - non-AP LC STA1 - non-AP LC STA3 - non-AP LC STA2 Submission Slide 6 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Test results Throughput (2) UL throughput performance per STA Fairness Submission Slide 7 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Test results PER (1) PER (per STA per second) Significant loss on QoS Submission Slide 8 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Test results PER (2) Average PER of all UL transmissions Submission Slide 9 Chong Han, pureLiFi
April 2021 doc.: IEEE 802.11-21/0722r1 Summary The performance of Relayed CCA mechanism is measured in the tests in terms of throughput and PER. Comparing to the system with RTS/CTS only, Relayed CCA enhances the system throughput around 100% eliminates the unfairness in usage of light medium among STAs reduces PER substantially The system performance for TGbb without using Relayed CCA in terms of throughput, PER and fairness will get worse as more non-AP LC STAs connect to an LC AP. Submission Slide 10 Chong Han, pureLiFi
