IEEE P802.11 – High Efficiency WLAN STUDY GROUP - MEETING UPDATE
Status of IEEE 802.11 HEW Study Group
High Efficiency WLAN (HEW)
Osama Aboul-Magd (Huawei Technologies), Chair
Yasuhiko Inoue (NTT), Recording Secretary
The High Efficiency WLAN Study Group (HEW SG) is a study group within IEEE 802.11 working group that will consider the improvement of spectrum efficiency to enhance the system throughput/area in high density scenarios of APs and/or STAs.
The study group was created based on the following straw poll and motion:
Do you support starting a new study group called “high efficiency WLAN” to enhance 802.11 PHY and MAC in 2.4 and 5GHz with a focus on:
l Improving spectrum efficiency and area throughput
l Improving real world performance in indoor and outdoor deployments
Ø in the presence of interfering sources, dense heterogeneous networks
Ø in moderate to heavy user loaded APs
Request approval by IEEE 802 LMSC to form an 802.11 Study Group to consider High-efficiency WLAN [as described in doc 11-13-0339r2] with the intent of creating a PAR and five criteria.
HEW study group had ten sessions during the week.
l Agenda: 11-13/1263r5, HEW SG November 2013 Meeting Agenda
l Closing report: 11-13/1476r1, HEW SG November 2013 Closing Report
l Draft minutes: 11-13/1465r1, November 2013 Dallas Meeting Minutes
1. The group approved minutes from the September 2013 Nanjing meeting and teleconferences on October 3rd and October 30th, 2013.
l 11-13/1117r1, September 2013 Nanjing Meeting Minutes
l 11-13/1275r1, Minutes from the teleconference on October 3rd , 2013
l 11-13/1303r0, Minutes from the teleconference on October 30th, 2013
2. The group received more than 40 submissions that were categorized into three categories, i.e., (1) Channel Mode/Simulation Scenarios and Evaluation Methodologies, (2) MAC/PHY technologies and (3) PAR proposals. Following submissions were presented during the week.
l Channel Models, Simulation Scenarios and Evaluation Methodologies
² 11-13/1001r5, “HEW SG Simulation Scenarios”, Simone Merlin (Qualcomm)
² 11-13/1305r0, “Simplification on HEW traffic models”, Bill Carney (Sony)
² 11-13/1359r0, “HEW Evaluation Methodology”, Ron Porat (Broadcom)
² 11-13/1370r0, “LTE OOB Interference to 2.4 GHz Band“, Yonggang Fang (ZTE TX)
² 11-13/1376r3, “Discussions on Penetration Loss”, Jianhan Liu (MediaTek)
² 11-13/1380r0, “Outdoor Channel Model Simulation Follow-up”, Hongyuan Zhang (Marvell)
² 11-13/1383r0, “System Level Simulation Parameters”, Wookbong Lee (LG Electronics)
² 11-13/1387r1, “HEW channel modeling for system level simulation”, Yan Zhang (Marvell)
² 11-13/1390r0, “PHY Abstraction for HEW System Level Simulations”, Yakun Sun (Marvell)
² 11-13/1391r0, “About SINR conversion for PHY Abstraction”, Yakun Sun (Marvell)
² 11-13/1392r0, “Methodology of Calibrating System Level Simulation Results”, Yakun Sun (Marvell)
² 11-13/1401r0, “System Level Assessments for Outdoor HEW Deployments”, Kaushik Josiam (Samsung)
² 11-13/1406r0, “Traffic Modeling for HEW Simulations”, Huai-Rong Shao (Samsung)
² 11-13/1407r0, “Simulation based study of QoE”, Chao-Chun Wang (MediaTek)
² 11-13/1412r0, “How to use simulation scenarios in HEW“, Minho Cheong (ETIR)
² 11-13/1419r1, “Modifications to ITU Channel Model to Support 160MHz bandwidth of operation”, Shahrnaz Azizi (Intel)
² 11-13/1420r1, “HEW Considerations for the Vehicular Environment”, Igal Kotzer (General Motors)
² 11-13/1438r0, “Traffic Observation and Study on Virtual Desktop Infrastructure”, Phillip Barber (Huawei Technologies)
² 11-13/1456r1, “Considerations on WFA feedback“, Simone Merlin (Qualcomm)
l MAC/PHY Technologies
² 11-13/1325r5, “IEEE 802.11ai overview”, Hiroshi Mano (ATRD), chair of TGai
² 11-13/1349r0, “Access Control Enhancement”, Katsuo Yunoki (KDDI)
² 11-13/1375r1, “Summary and Discussions of Proposals on Potential PHY Technologies in HEW”, Jianhan Liu (MediaTek)
² 11-13/1377r0, “DL efficiency enhancement in high density network”, Kiseon Ryu (LG Electronics)
² 11-13/1382r0, “Discussion on OFDMA in HEW”, Jinsoo Choi (LG Electronics)
² 11-13/1386r2, “Improving WLAN Efficiency and QoE – A Top Down Approach”, Veli-Pekka Kentonen (7 Signals)
² 11-13/1388r0, “UL MU-MIMO transmission”, Jinyoung Chun (LG)
² 11-13/1395r2, “Simultaneous Transmission Technologies for HEW”, Koichi Ishihara (NTT)
² 11-13/1409r0, “Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads”, Adriana Flores (Rice University)
² 11-13/1421r1, “STR Radios and STR Media Access”, Phillip Levis (Stanford University)
² 11-13/1440r0, “Argos | Practical Masive-MIMO”, Clayton Shepard (Rice University)
l PAR proposals
² 11-13/1331r2, “Proposed direction and priorities for HEW”, Guido R. Hiertz (Ericsson)
² 11-13/1333r0, “Power Efficiency PAR Requirements”, Chris Hansen (Covariant)
² 11-13/1366r3, “Some propositions to progress towards the PAR definition”, Laurent Cariou (Orange)
² 11-13/1361r0, “Discussion to derive HEW Functional Requirements”, Yasunao Misawa (KDDI)
² 11-13/1389r1, “Discussion on HEW PAR”, HanGyu Cho (LG Electronics)
² 11-13/1397r0, “Renewing 2.4 GHz”, Brian Hart (Cisco Systems)
² 11-13/1398r0, “Requirements for HEW”, Akira Yamada (NTT DOCOMO)
² 11-13/1450r0, “Summary of PAR Discussions”, Osama Aboul-Magd (HEW SG chair)
3. Discussed the WFA feedback on prioritization of the usage cases and approved a liaison letter back to WFA.
l Feedback from Wi-Fi Alliance:
² 11-13/1443r0, Liaison from Wi-Fi Alliance - HEW Use Cases
l Approved a liaison document to Wi-Fi Alliance:
² 11-13/1446r0, IEEE 802.11 Liaison to WFA on Prioritization of High Efficiency WLAN (HEW) Usage Scenarios
4. Started the discussion on the PAR.
5. The group passed a motion to extend the study group by 136/0/2.
The group agreed to have three teleconferences before the January 2014 meeting.
l Wednesday, December 4th, 2013: 10:00 – 12:00 (ET)
l Wednesday, December 18th, 2013: 20:00 – 22:00 (ET)
l Wednesday, January 8th, 2014: 10:00 – 12:00 (ET)
Goals for the January 2014
l Progress the work on the PAR and 5C.
HEW study group had nine sessions during the week.
l Agenda: 11-13/0951r7
l Closing report: 11-13/1231r1
l Draft minutes: 11-13/1117r1
1. The group approved minutes from the Geneva meeting and teleconference on August 28th, 2013.
l 11-13/0861r1, Minutes from face-to-face meeting in Geneva, July 2013
l 11-13/1003r0, Minutes from the teleconference on August 28th, 2013
2. 50 submissions in the following categories were received and presented during the week.
l Channel Models (CM)
² 11-13/0996r2, “Outdoor Channel Model Candidates for HEW”, Kaushik Josiam (Samsung)
² 11-13/1113r0, “Channel Modeling for Dense Wi-Fi Environments“, Minho Cheong (ETRI)
² 11-13/1125r3, “HEW Outdoor Channel Model Discussions”, Hongyuan Zhang (Marvell)
² 11-13/1135r4, “Summary of HEW Channel Models”, Jianhan Liu (MediaTek)
² 11-13/1146r1, “Update on HEW Channel Model”, Shahrnaz Azizi (Intel Corp)
l Simulation Scenarios/Simulation Methodologies (SS/SM)
² 11-13/1000r2, “Simulation Scenarios”, Simone Merlin (Qualcomm)
² 11-13/1001r2, “Simulation Scenarios Document Template”, Simone Merlin (Qualcomm)
² 11-13/1079r0, “Outdoor Stadium Simulation Details Discussion”, Joseph Levy (InterDigital)
² 11-13/1080r0, “Markov Modeling of the Channel for HEW System Level Simulations”, Joseph Levy (InterDigital)
² 11-13/1081r0, “HEW Simulation Methodology”, Sayantan Choudhury (Nokia).
² 11-13/1083r0, “HEW SG Unified Simulation Scenarios”, David Xun Yang (Huawei)
² 11-13/1114r1, “Simulation Scenario for unplanned Wi-Fi Network”, Jae Seung Lee (ETRI)
² 11-13/1123r1, “Capacity Simulation of High Density Indoor WLAN Systems”, Filip Mestanov (Ericsson AB)
² 11-13/1133r0, “Virtual Desktop Infrastructure (VDI)”, Yingpei Lin (Huawei Technologies)
² 11-13/1153r0, “Simulation Scenario Proposal”, Laurent Cariou (Orange)
² 11-13/1159r1, “Video Performance Requirements and Simulation Parameters”, Guoqing Li (Intel)
² 11-13/1162r1, “Video Application Categories and Characteristics”, Guoqing Li (Intel)
² 11-13/1176r0, “Some Simulation Scenarios for HEW”, Reza Hedayat (Cisco)
l Evaluation Methodologies (EM)
² 11-13/1051r1, “Evaluation Methodology”, Ron Porat (Broadcom)
² 11-13-1054r1, “HEW Evaluation Metrics Suggestions”, Yonggang Fang (ZTETX)
² 11-13/1059r0, “PHY Abstraction for HEW Evaluation Methodology”, Dongguk Lim (LG Electronics)
² 11-13/1131r0, “PHY Abstraction for HEW System Level Simulation”, Jiayin Zhang (Huawei Technologies)
² 11-13/1137r2, “The Definition of Performance Metrics for HEW”, Haui-Rong Shao (Samsung)
² 11-13/1144r1, “Simplified Traffic Model Based on Aggregated Network Statistics”, William Carney (Sony)
² 11-13/1158r0, “Video Traffic and Applications for HEW”, William Carney (Sony)
l Functional Requirements (FR)
² 11-13/1097r0, “Functional Requirements for HEW PAR”, Minho Cheong (ETRI)
² 11-13/1116r0, “Discussion on HEW Functional Requirements”, Jinsoo Choi (LG Electronics)
l MAC/PHY Technologies (TECH)
² 11-13/1046r2, “Discussion for Massive MIMO for HEW”, Zhigang Wen (BUPT)
² 11-13/1056r1, “Enhancement on resource utilization in OBSS environment”, Giwon Park (LG Electronics)
² 11-13/1058r0, “Efficient wider bandwidth operation”, Kiseon Ryu (LG Electronics)
² 11-13/1061r0, “Multicast Transmission for HEW”, Jeongki Kim (LG electronics)
² 11-13/1073r1, “Access Control Enhancement“, Katsuo Yunoki (KDDI Labs)
² 11-13/1074r0, “Occupied air time calculation for doc.1073r0”, Katsuo Yunoki (KDDI R&D Laboratories)
² 11-13/1077r1, “EDCA Enhancements for HEW”, Hui Zhao (BUPT)
² 11-13/1089r1, “D2D Technology for HEW”, Xiang Gao (BUPT)
² 11-13/1090r2, “Non-linear pre-coding MIMO Scheme for next generation WLAN”, Xiang Gao (BUPT)
² 11-13/1105r0, “Discussion on Access Mechanism for HEW”, Meng Yang (CATR)
² 11-13/1122r1, “Considerations for In-Band Simultaneous Transmit and Receive (STR) feature in HEW”, Rakesh Taori (Samsung Electronics)
² 11-13/1126r0, “Beamforming under OBSS Interference”, Hongyuan Zhang (Marvell)
² 11-13/1168r0, “Requirements on WLAN Ad Push”, Hui Tian (BUPT)
² 11-13/1169r0, “WLAN Cellular Offload in High Speed Moving Environment”, Hui Tian (BUPT)
² 11-13/1154r0, “DL-MU-MIMO Transmission with Unequal Bandwidth”, Yongming Huang (Southeast University)
² 11-13/1155r0, “Space Division Multiplex for OBSS Interference Suppression”, Yongming Huang (Southeast University)
² 11-13/1156r0, “TXOP Redundancy NAV Clear”, Yongming Huang (Southeast University)
² 11-13/1157r3, “Feasibility of Coordination Transmission for HEW”, Yunzhou Li (Tsunghua University)
l General (GEN)
² 11-13/1057r0, “Legacy support on HEW frame structure”, Wookbong Lee (LG electronics)
² 11-13/1100r0, “HEW SG Progress Review”, Osama Aboul-Magd (HEW SG)
² 11-13/1115r0, “Possible vision of the HEW-driven Wi-Fi 2020”, Minho Cheong (ETRI)
² 11-13/1163r0, “PAR and 5C: Comments based on 11n”, Sean Coffey (RealTek)
² 11-13/1164r1, “Some PAR and 5C Requirements”, Paul Lambert (Marvell)
3. Straw Polls
Several straw polls were conducted to sense the group consensus on topics related to simulation scenarios, evaluation methodologies and channel models.
The group reviewed the timeline. No changes.
The HEW SG agreed to have three teleconferences before the November 2013 session.
l Wednesday, October 9th, 2013: 10:00 – 12:00 (ET)
l Wednesday, October 17th, 2013: 00:01 – 02:00 (ET)
l Wednesday, October 30th, 2013: 10:00 – 12:00 (ET)
Goals for the November 2013
l Hear presentations addressing SS/SM/EM/FR/CM/TECH
Ø Attempt to consolidate documents related to the above areas of discussion.
Ø Priority will be given to presentations with consolidated views
l Start discussion on PAR related issues
l Motion for SG extension
l WFA feedback on the usage cases
HEW study group had nine sessions during the week.
l Agenda: 11-13/0664r5
l Closing report: 11-13/0922r0
l Draft minutes: 11-13/0861r0
1. The group approved minutes from the face-to-face meeting in Waikoloa, HI and teleconferences held on June 5th and June 19th.
l 11-13/0560r2, May 2013 Waikoloa meeting minutes
l 11-13/0663r1, Teleconference minutes 20130605
l 11-13/0704r0, Teleconference minutes 20130619
2. The group received over 35 submissions in areas of (1) Usage Models/Use Cases, (2) Functional Requirements, (3) Simulation Scenarios and Evaluation Methodology, (4) MAC/PHY techniques as listed below.
l Usage Models/Use Cases
² 11-13/0657r3, “HEW SG usage models and requirements - Liaison with WFA” Laurent Cariou (Orange)
² 11-13/0795r0, “HEW Usage Scenarios Categorization”, Eldad Perahia (Intel)
² 11-13/0802r1, “Proposed re-categorization of the HEW usage models”, Yasuhiko Inoue (NTT)
² 11-13/0761r0, “Interference Control Use Case for HEW”, Fang Xie (CMCC)
² 11-13/0836r0, “HEW Usage Models for Backhauls and Floor Automation“, Minho Cheong (ETRI)
l Functional Requirements
² 11-13/0787r0, “Follow up requirements”, Wu Tianyu (Huawei)
² 11-13/0850r0, “Quantitative QoE Requirements for HEW”, Huai-Rong Shao (Samsung)
² 11-13/0798r1, “Functional Requirements in HEW”, Jinsoo Choi (LG Electronics)
² 11-13/0840r1, “HEW Functional Requirements Follow-up (Preliminary Version for Study Group discussions)”, Minho Cheong (ETRI)
l Simulation Scenarios and Evaluation Methodology
² 11-13/0723r1, “HEW SG Evaluation Methodology Overview”, Minyoung Park (Intel)
² 11-13/0756r1, “HEW Channel Model”, Vinko Erceg (Broadcom)
² 11-13/0858r0, “Enhanced Channel Model for HEW”, Shahrnaz Azizi (Intel)
² 11-13/0728r1, “Network Optimization for Expected HEW Traffic Patterns”, Bill Carney (Sony)
² 11-13/0869r0, “Simulation scenarios and metrics for HEW”, Thomas Derham (Orange)
² 11-13/0872r1, “Clarifications on outdoor deployments”, Laurent Cariou (Orange)
² 11-13/0847r1, “Evaluation Criteria and Simulation Scenarios” Klaus Doppler (Nokia)
² 11-13/0786r0, “Discussion on System Level Simulation Methodology” Wu Tianyu (Huawei)
² 11-13/0757r1, “Evaluation Methodology and Simulation Scenarios” Nihar Jindal (Broadcom)
² 11-13/0805r2, “On Definition of Dense Networks and Performance Metric”, Jianhan Liu (MediaTek)
² 11-13/0800r1, “HEW Study Group Documentation”, Hemanth Sampath (Qualcomm)
² 11-13/0837r0, “Consideration for HEW Evaluation Methodology”, Minho Cheong (ETRI)
l MAC/PHY techniques
² 11-13/0768r0, “TD-uCSMA”, Riccard Scopigno (ISMB)
² 11-13/0843r0, “Further Evaluation on outdoor Wi-Fi”, Wookbong Lee (LG Electronics)
² 11-13/0852r0, “Potential approach to improve WLAN BSS edge performance”, Juho Pirskanen (Renesas Mobile)
² 11-13/0871r0, “Discussion on Potential Techniques for HEW”, Timo Koskela (Renesas Mobile)
² 11-13/0877r0, “HEW Beamforming Enhancements”, James Wang (MediaTek)
² 11-13/0764r1, “Full-duplex Technology for HEW”, Andre Bourdoux (IMEC)
² 11-13/0765r2, “Full-duplex is an emerging radio paradigm that has the potential to improve the efficiency of future WLANs”, Hongliang Bian (China Telecom)
² 11-13/0712r1, “A Brief Time of History”, Larry Taylor (DTC)
² 11-13/0801r1, “Issues of Low Rate Transmissions”, Akira Kishida (NTT)
² 11-13/0758r0, “Possible Approaches for HEW”, Katsuo Yunoki (KDDI Labs)
² 11-13/0849r1, “New Techniques: Enabling Real World Improvement By Exposing Internal MAC state”, Brian Hart (Cisco)
² 11-13/0854r1, “Consideration on Efficiency Enhancement”, SangHyun Chang (Samsung)
² 11-13/0865r2, “Video Data Rate for HEW”, Huai-Rong Shao (Samsung)
² 11-13/0878r0, “Efficiency enhancement for dense WLAN environment”, Jeongki Kim (LG Electronics)
3. The group approved document 11-13/0657r6 as HEW SG initial draft of Usage Models and to send it to Wi-Fi Alliance asking for prioritization of the use cases and additional feedbacks.
4. The group also approved a liaison letter to the Wi-Fi Alliance contained in the document 11-13/902r1.
5. The group passed motion to extend the SG.
6. The group discusses the timeline.
Ø May 2013: Initial meeting
Ø July 2013: Presentations, SG extension
Ø September 2013: Presentations
Ø November 2013: Presentations, Initial PAR & 5C, SG extension
Ø January 2014: Presentations, Final version of PAR and 5C, WG approval
Ø March 2014: Presentations, EC approval of PAR and 5C
Ø May – June 2014: NesCom approval
Ø July 2014: TG starts
The group agreed to have two teleconferences before the September 2013 meeting.
l Wednesday, August 7th, 2013: 10:00 – 12:00 (ET)
l Wednesday, August 28th, 2013: 20:00 – 22:00 (ET)
During the September 2013 meeting, the HEW SG continues discussions on issues related to:
l Usage Models/Use Cases
l Functional Requirements
l Scope and Process
l Agenda: 11-13/0400r4
l Closing report: 11-13/0624r0
l Draft minutes: 11-13/0560r2
1. The group decided leadership structure to have one chairperson and one secretary.
Osama Aboul-Magd (Huawei Technologies) was elected as the chair of the HEW SG.
Yasuhiko Inoue (NTT) was elected as the recording secretary of the HEW SG.
2. The group received 22 submissions as listed below.
Usage Models/Use Cases:
² 11-13/0514r0, “HEW Usage Scenarios and Applications”, Eldad Perahia (Intel)
² 11-13/0538r0, “Dense apartment building use case for HEW”, Klaus Doppler (Nokia)
² 11-13/0554r0, “Use Cases”, Minho Cheong (ETRI)
² 11-13/0567r0, “Proposed HEW Usage Models”, Yasuhiko Inoue (NTT)
² 11-13/0527r2, “Usage Models for Next Generation”, David Xun Yang (Huawei) and James Wang (MediaTek)
² 11-13/0534r1, “Direction and Use Cases for HEW”, HanGyu Cho (LG Electronics)
² 11-13/0563r0, “D2D Technology for HEW”, Zhanji Wu (BUPT) – not presented
² 11-13/0505r0, “MAC Efficiency Analysis for HEW SG”, Minyoung Park (Intel)
² 11-13/0545r1, “WLAN QoE, End User Perspective Opportunities to Improve”, Veli-Pekka Ketonen (7 signals)
² 11-13/0523r2, “Understanding Current Situation of Public Wi-Fi Usage – Possible Requirements for HEW –“, Katsuo Yunoki (KDDI Labs)
² 11-13/0539r0, “Efficient Frequency Spectrum Utilization”, Yongho Seok (LG Electronics)
² 11-13/0544r3, “Discussions on 11ac PHY efficiency”, Jianhan Liu (MediaTek)
² 11-13/0536r0, “HEW SG PHY Considerations For Outdoor Environment”, Wookbong Lee (LG Electronics)
² 11-13/0576r3, “Performance Evaluation for 11ac”, Wu Tianyu (Huawei Technologies)
² 11-13/0556r1, “Wi-Fi interference measurements in Korea – Part 1”, Minho Cheong (ETRI)
² 11-13/0549r0, “A perspective on what any High Efficiency Wireless TG should and should not do”, Brian Hart (Cisco Systems)
² 11-13/0524r2, “HEW Finctional Requirements”, Wu Tianyu (Huawei Technologies)
² 11-13/0555r2, “Considerations on Functional Requirements for HEW”, Minho Cheoung (ETRI)
Scenarios and Metrics
² 11-13/0503r0, “Discussion on Basic Technical Aspects for HEW”, Juho Pirskanen (Renesas Mobile)
² 11-13/0542r0, “HEW Scenarios and Goals”, Simone Merlin (Qualcomm)
² 11-13/0486r1, “HEW – Metrics, Targets and Simulation Scenarios”, Ron Porat (Broadcom)
² 11-13/0520r1, “HEW scenarios and evaluation metrics”, Thomas Derham (Orange)
² 11-13/0558r1, “Coexistence and Optimization of Wireless LAN: Time, Frequency, Space, Power, and Load”, Jim Lansford (CSR)
3. Liaison to the Wi-Fi Alliance
The group agreed to ask the Wi-Fi Alliance for input about priority of the use cases.
Laurent Cariou (Orange) volunteers to develop the use case document.
4. Project planning
The group discussed about the project plan based on the submission 11-13/0616r2 by Phil Barber (Huawei)
Discussion to be continued in the July meeting.
The group agreed to have two teleconferences before the July 2013 Plenary to develop a use case document to be shared with the Wi-Fi Alliance.
² June 5th: 10:00 – 12:00 (ET)
² June 19th: 20:00 – 22:00 (ET)
l During July 2013 session, the HEW SG will continue discussions on:
Ø Usage Cases
Ø Functional Requirements
Ø Scope and Process
Documents referenced in the motion that led to the creation of the study group
Press release document
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