IEEE 802.11-16/0448r2 Functional Requirements for Scalability Operation
Explore the functional requirements proposed in the May 2016 IEEE document for a scalable 11az protocol supporting over 200 STAs concurrently for locationing operation. The document outlines objectives like optimizing location fix time, minimizing power consumption, and maintaining stability with a large number of STAs.
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May 2016 doc.: IEEE 802.11-16/0448r2 Functional requirements for scalability operation Date: 2016-05-17 Authors: Name Affiliation Address Phone Email Chao- chun.wang@mediatek.c om Chao-Chun Wang MediaTek Inc James.yee@mediatek.c om James Yee MediaTek Inc thomas.handte@ eu.sony.com Thomas Handte SONYCorp. kare.agardh@ sonymobile.com K re Agardh SONY mobile Submission Slide 1 Chao-Chun Wang (MediaTek Inc)
May 2016 doc.: IEEE 802.11-16/0448r2 Background This document proposes a set of functional requirements for a scalable .11az protocol to support a large number of STAs (> 200) in performing locationing operation concurrently. Submission Slide 2 Chao-Chun Wang (MediaTek Inc)
May 2016 doc.: IEEE 802.11-16/0448r2 Definition of Scalability 11-16-0134-03-00az-accuracy-and-coverage-functional- requirements details the functional requirement for accuracy and coverage The objectives of the accuracy and coverage are also applicable to scalability, except the consideration of the performance threshold needs to be updated for > 200 STAs rather than for a single STA Submission Slide 3 Chao-Chun Wang (MediaTek Inc)
May 2016 doc.: IEEE 802.11-16/0448r2 Objectives 1. Optimize the time it takes to get a first location fix with the required accuracy 2. Determine the Refresh rate of the location information vs. accuracy 3. Minimize Power (i.e., minimize Idle Rx, Active Rx and Active Tx) 4. Minimize Medium Usage 5. Optimize the duration a device has to operate off- channel Submission Slide 4 Chao-Chun Wang (MediaTek Inc)
doc.: IEEE 802.11-16/0448r2 May 2016 Functional Requirements - 1(Scalability) The scalable mode of the 802.11az range measurement protocol shall: Support at least one mode which allows for scalable positioning, meeting the following scalability mode requirements Support at least 200 unassociated and associated STAs, per AP performing locationing operation concurrently Achieve improved accuracy of 1st fixed time of a STA with greater number of APs involved Utilize less than 10% of the channel capacity of an AP Operate with a maximum refresh rate of .5Hz Maintain stability with up to 5% STAs joining and leaving the coverage of the AP Submission Slide 5 Chao-Chun Wang (MediaTek Inc)
doc.: IEEE 802.11-16/0448r2 May 2016 Functional Requirements 2 (Scalability) The scalable mode of the 802.11az positioning measurement protocol should: Minimize the STA s power consumption. Minimize the off-channel time of an associated STA Off-channel time is the time an associated STA is required to spend on channel(s) other than the one used by the AP it s associated to for the purpose of location measurement exchange. Submission Slide 6 Chao-Chun Wang (MediaTek Inc)
doc.: IEEE 802.11-16/0448r2 Motion - 1 Move to adopt the set of functional requirements listed in slide #5 and include them in the TGaz Functional Requirements Document under the sub-section focused on Scalability for the .11az protocol Moved: Seconded: Result: Submission Slide 7
doc.: IEEE 802.11-16/0448r2 Motion - 2 Move to adopt the set of functional requirements listed in slide #6 and include them in the TGaz Functional Requirements Document under the sub-section focused on Scalability for the .11az protocol Moved: Seconded: Result: Submission Slide 8
doc.: IEEE 802.11-16/0448r2 Back UP Submission Slide 9
doc.: IEEE 802.11-16/0448r2 Functional Requirements for scalable positioning protocol Parameter Number of locating STAs Value 200. STAs Assumptions STA may be unassociated STA. Number is per AP. comments Number of APs used to accomplish the task dependent? Yes. e.g. If to support the technique more than 1 AP is required multiply the number of loc. STAs by number of APs required to accomplish the task. Medium usage 10% Dedicated to location determination purposes for the scalable operational mode. Refresh rate 0.5Hz Rate of location fixes required by the Application layer. e.g. might be that multiple measurements are required for a single fix to be generated. Mobility factor? 5% Percentage of STAs joining the service and leaving the service out of the STAs under coverage of 1 AP. Out of refresh rate. STA stays for 20 cycles @ 0.5Hz giving 5% of total locating STAs. e.g. ability to account for variability in STA s mobility Support for unassociated STAs required. Yes. Submission Slide 10
