Doc.: IEEE 802.11-11/1019r1 Submission July 2011 MediaTek, Inc Slide 1 Supporting Large Number of STAs in 802.11ah Date: 2011-07-20 Authors:

Slides:



Advertisements
Similar presentations
Protocol for SU and MU Sounding Feedback
Advertisements

Doc.:IEEE /0439r0 March 2012 Switching between DCF and PP-MAC Date: Slide 1 Authors:
PS-Poll TXOP Using RTS/CTS Protection
MAC Header Compression
Doc.: IEEE /0604r1 Submission May 2014 Slide 1 Modeling and Evaluating Variable Bit rate Video Steaming for ax Date: Authors:
Doc.: IEEE /1255r0 Submission Sep.,2011 Siyang Liu, CATRSlide 1 DCF Enhancements for Large Number of STAs Date: Authors:
CSMA/CA in IEEE Physical carrier sense, and Virtual carrier sense using Network Allocation Vector (NAV) NAV is updated based on overheard RTS/CTS/DATA/ACK.
Submission doc.: IEEE /0329r1 March 2012 Chittabrata Ghosh, Nokia Slide 1 Date: Authors: Group Synchronized DCF.
Doc.: IEEE /0861r0 SubmissionSayantan Choudhury Impact of CCA adaptation on spatial reuse in dense residential scenario Date: Authors:
Submission doc.: IEEE 11-12/279r0 March 2012 Jarkko Kneckt, NokiaSlide ai simulations Date: Authors:
Doc.: IEEE /0028r1 Submission January 2012 Anna Pantelidou, Renesas Mobile CorporationSlide 1 Power Saving Possibilities for Networks Supporting.
Doc.: IEEE /0112r4 Submission Supporting Authentication/Association for Large Number of Stations September 2012 Slide 1 I2R Date:
protocol continued. DCF The basic idea is non-persistent. Can do an optimization: For a new packet (Q len = 0), the sender needs only wait for.
Doc.: IEEE /650r0 Submission May 2012 Anna Pantelidou, Renesas Mobile CorporationSlide 1 Grouping Methodology Date: Authors:
Submission Jan 2012 doc.: IEEE 11-12/69r2 ZTE CorporationSlide 1 Consideration on Max Idle Period Extension for ah Power Save Date: Authors:
Opersating Mode DCF: distributed coordination function
A Virtual Collision Mechanism for IEEE DCF
1 Dynamic Adaption of DCF and PCF mode of IEEE WLAN Abhishek Goliya Guided By: Prof. Sridhar Iyer Dr. Leena-Chandran Wadia MTech Dissertation.
Doc.: IEEE /0060r1 Submission January 2011 Minyoung Park, Intel Corp.Slide 1 Low Power Capability Support for ah Date: Authors:
Voice Capacity analysis over Introducing VoIP and WLans IEEE based Wireless Local Area Networks (WLANs) are becoming popular While WLANs.
Submission doc.: IEEE 11-13/0288r0 TXOP Sharing Operation for Relay Date: Slide 1Eric Wong, Broadcom Authors: March 2013.
Doc.: IEEE /0094r2 Submission Jan 2012 Slide 1 Authors: MAC Header Design for Small Data Packet for ah Date: Lv kaiying, ZTE.
Doc.: IEEE /0878r0 Submission July 2012 Timo Koskela, Renesas Mobile CorporationSlide 1 On the Channel Switching in ah Date:
Doc.: IEEE /117r0 Submission January 2012 Minyoung Park, Intel Corp.Slide 1 TGah TIM Operation Date: Authors:
Submission doc.: IEEE /0304r2 March 2015 Joonsuk (Apple) etc.Slide 1 Evaluating Power Save Performance Date: Authors:
Doc.: IEEE /0880r2 Submission Scheduled Trigger frames July 2015 Slide 1 Date: Authors: A. Asterjadhi, H. Choi, et. al.
Doc.: IEEE /0897r0 SubmissionJae Seung Lee, ETRISlide 1 Active Scanning considering Operating Status of APs Date: July 2012.
Doc.: IEEE /0102r2 SubmissionLiwen Chu Etc.Slide 1 TGah Power Saving Date: Authors: Date: Jan, 2012.
Submission doc.: IEEE 11-11/1512r4 November 2011 Slide 1 MAC considerations for ah (Probe and Pull MAC) Date: Authors: Zhong-Yi Jin, Nokia.
Doc.: IEEE /0840r1 Submission AP Assisted Medium Synchronization Date: Authors: September 2012 Minyoung Park, Intel Corp.Slide 1.
Doc.: IEEE /1032r1 Submission September 2004 Hiroyuki Nakase, Tohoku Univ.Slide 1 Enhanced MAC proposal for high throughput. Tohoku University.
Submission doc.: IEEE 11-12/0553r4 May 2012 Jarkko Kneckt, NokiaSlide 1 Response Criteria of Probe Request Date: Authors:
Submission doc.: IEEE /1034r4 September 2012 Jeongki Kim, LG ElectronicsSlide 1 Enhanced scanning procedure for FILS Date: Authors:
Submission doc.: IEEE /1289r2 Michelle Gong, IntelSlide 1 RTS/CTS Operation for Wider Bandwidth Date: Authors: Nov
Submission doc.: IEEE 11-11/1512r1 Company Confidential November 2011 Slide 1 MAC considerations for ah (Probe and Pull MAC) Date: Authors:
Doc.: IEEE /1407r0 SubmissionSlide 1 Simulation Based Study of QoE Date: Authors: Chao-Chun Wang, MediaTek Nov NameAffiliationsAddressPhone .
Submission doc.: IEEE 11-14/0866r0 July 2014 Johan Söder, Ericsson ABSlide 1 Traffic modeling and system capacity performance measure Date:
Doc.: IEEE /1230r1 Submission ah Channel Access Improvement Date: Authors: May 2012 Minyoung Park, Intel Corp.Slide 1.
Performance Evaluation of IEEE
Doc.: IEEE /1263r2 Submission Dec 2009 Z. Chen, C. Zhu et al [Preliminary Simulation Results on Power Saving] Date: Authors: Slide.
SubmissionJoe Kwak, InterDigital1 BSS Load: AP Loading Metric for QOS Joe Kwak InterDigital doc: IEEE /0079r0January 2005.
Doc.: IEEE /0619r3 Submission May 2012 Haiguang Wang et. al, I2R, SingaporeSlide 1 Overlapping IEEE ah Networks of Different Types Date:
Doc.: IEEE /1324r0 November 2012 Very Low Energy Paging Date: Authors: Slide 1 S. Merlin et al.
Doc.: IEEE /1032r1 Submission September 2004 Hiroyuki Nakase, Tohoku Univ.Slide 1 Enhanced MAC proposal for high throughput. Tohoku University.
Doc.: IEEE /0645 Submission May 2012 Open-Loop Link Margin Index for Fast Link Adaptation Date: Authors: Slide 1Yong Liu, Marvell,
Submission doc.: IEEE /1361r0 November 2015 Slide 1 Dmitry Akhmetov (Intel) Energy consumption with Scheduled PSP Date: Authors: NameAffiliationsAddressPhone .
Doc.: IEEE /0341r2 Submission March 2011 MediaTek, Inc Slide 1 Usage Cases for ah Date: Authors:
Doc.: IEEE /0370r0 Submission January 2012 Haiguang Wang et. al, I2R, SingaporeSlide 1 TIM Compression Date: Authors:
Doc.: IEEE /xxxr0 Submission Nov Jonathan Segev (Intel)Slide 1 Rapid Scanning Procedure Date: Authors:
Submission doc.: IEEE /1309r0 November 2012 Non-TIM Mode Negotiation Date: Slide 1 Authors: Kaiying Lv, ZTE.
Submission doc.: IEEE /0353r1 March 2016 Hanseul Hong, Yonsei UniversitySlide 1 MU-RTS/CTS for TWT Protection Date: Authors:
Submission doc.: IEEE 11-15/1060r0 September 2015 Eric Wong (Apple)Slide 1 Receive Operating Mode Indication for Power Save Date: Authors:
EA C451 (Internetworking Technologies)
Supporting Authentication/Association for Large Number of Stations
Supporting Authentication/Association for Large Number of Stations
Consideration on Max Idle Period Extension for ah Power Save
Parameters for Power Save Mechanisms
Month Year doc.: IEEE yy/xxxxr0 January 2012
AP Service Load: Improved Definition
Channel Access Efficiency
MAC Calibration Results
Overlapping IEEE ah Networks of Different Types
Consideration on Max Idle Period Extension for ah Power Save
DL MU MIMO Error Handling and Simulation Results
July,2011 doc.: IEEE /0985r0 July,2011 Performance Evaluation of Multiple STAs’ Authentication and Association Process Date: Authors:
Overlapping IEEE ah Networks of Different Types
Supporting Authentication/Association for Large Number of Stations
Consideration on Max Idle Period Extension for ah Power Save
Cooperative AP Discovery
July,2011 doc.: IEEE /0985r0 July,2011 Performance Evaluation of Multiple STAs’ Authentication and Association Process Date: Authors:
Presentation transcript:

doc.: IEEE /1019r1 Submission July 2011 MediaTek, Inc Slide 1 Supporting Large Number of STAs in ah Date: Authors:

doc.: IEEE /1019r1 SubmissionSlide 2 Summary A ah network must support up to 6000 STAs –Smart Grid, long range data collection and monitoring system 11/0725r1 raised concerns about whether CSMA/CA channel access is able to support up to 6000 STAs –Authentication and Association is based on contention access process The time it takes for STAs to join a BSS (association time) is an important performance metric –The efficiency of CSMA/CA mechanism is unclear with 6000 STAs Reporting simulation results for the following cases –Transmission delay for large number of STAs based on CSMA/CA channel access –Transmission delay for multiple rounds of frame exchange, for example Authentication and Association Simulation tool – Estinet Network Simulator & Emulator –The commercial version of the NCTUns simulator Additional information about the simulation methodology is available upon request July 2011 MediaTek, Inc

doc.: IEEE /1019r1 SubmissionSlide 3 Simulation Goal: See how the maximum Tx delay varies as the number of STAs increases in a BSS. Scenario The BSS system consists of n STAs and one AP Each STA sends one fixed sized, m byte, frame to the AP using a fixed rate of r kbps, followed by the AP responding with an ACK frame An STA stays silent after completing one transaction All STAs attempt to send data frame starting at the beginning of the simulation using DCF CSMA/CA Simulation of Max. Tx Delay July 2011 MediaTek, Inc

doc.: IEEE /1019r1 SubmissionSlide 4 Channel access mechanism is DCF Maximum backoff window is 1024 The MAC layer re-try is limited to seven times The application layer will keep re-trying until an STA successfully completes the transmission of one frame. Other Parameters n: ranges from 50 to 2000 m: 50 bytes r: 100 kbps (the minimum rate) DIFS: 34 us SIFS: 16 us timeslot: 9 us preamble: 16 us signal (PLCP header): 4 us service bits: 16 bits tail bits: 6 bits Ack frame size: 14 bytes Simulation Parameters July 2011 MediaTek, Inc

doc.: IEEE /1019r1 SubmissionSlide 5 Result – Tx Delay July 2011 MediaTek, Inc # of STAs Tx Delay (ms) The time to complete n transactions increases at a rate of TBD. The best case second order polynomial curve puts the max Tx delay at around 700 seconds for 6000 STAs

doc.: IEEE /1019r1 SubmissionSlide 6 Result – Number of MAC Layer re-tries July 2011 MediaTek, Inc # of STAs Total # of MAC Layer re-try count for all STAs The MAC layer re-try count increases at a rate of TBD The slope of the curve grows continuously with number of STAs. The high number of re-try count will be the source of issues such as higher power consumption

doc.: IEEE /1019r1 SubmissionSlide 7 Result – Tx Delay for Three Rounds of Frame Exchange July 2011 MediaTek, Inc # of STAs Tx Delay (ms) The time to complete n rounds of frame exchange for m STAs at a rate of TBD.

doc.: IEEE /1019r1 SubmissionSlide 8 According to the simulation result, The DCF mechanism is capable of supporting up to 6000 STAs In the worst case where all STAs tx at the same time (e.g., due to a common event in a smart grid application), a STA can still send a report once every reporting cycle as long as the cycle time is greater than TBD. The worst case “association time” for 6000 STAs is yet to be determined This delay is acceptable if traffic load is low To reduce the number of MAC layer re-tries (reducing the probability of collision) and power consumption, the STAs can be grouped Example: Each group has 50 STAs and each group accesses the channel during staggered intervals. Future Work Completing simulation Tx Delay of 6000 STAs to validate polynomial approximation. Conclusions July 2011 MediaTek, Inc