1. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 1 WRSS Discussions Notice: This document has been prepared to assist IEEE 802.11. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at.http:// ieee802.org/guides/bylaws/sb-bylaws.pdfstuart.kerry@philips.compatcom@ieee.org Date: 2005-03-11 Authors:

2. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 2 Abstract In order to differentiate from other 802.11 measurement types, the term of High Resolution RSSI (HRRSSI) was changed to WAVE Received Signal Strength (WRSS) during IEEE 802.11p interim session in January 2005. HRWRSS in the current 802.11p draft is reviewed. A complete solution for PHY to enter / exit WRSS measurement mode (through PLME_SAP) is proposed. WRSS request and report are defined as new measurement types based on 802.11h dot11WRSSCapabilityClass

3. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 3 HRWRSS Overview in 802.11p draft HRWRSS measurement requirements: –Resolution of 0.2 dBm within -60 to -30 dBm. –Accuracy of ± 3 dB across the entire operating temperature. Entering or exiting HRWRSS mode is through PHY_SAP:

4. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 4 A complete solution to enter / exit WRSS measurement mode

5. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 5 PLME_SAP Entering or exiting WRSS measurement mode is a management activity so that it can be implemented through PLME_SAP: –Add dot11WRSSMode to PHY MIB

6. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 6 WME_SAP Application to request changing WRSS measurement mode: –WSIE includes WRSS Measurement Mode information. –During application initialization through WSIE, an OBU enters WRSS Measurement Mode (e.g. lock AGC). –After application completion, an OBU exits WRSS Measurement Mode (e.g. unlock AGC).

7. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 7 Complete Illustration

8. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 8 802.11h Measurement Types (Request)

9. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 9 802.11h Measurement Types (Report)

10. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 10 WRSS request element Defined as a new 802.11h measurement type: NameMeasurement Type Basic request0 Clear Channel Assessment (CCA) request 1 Receive power indication (RPI) histogram request 2 WRSS request3

11. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 11 WRSS request element (cont’d) The measurement request field corresponding to a WRSS request is shown below.. Channel Number Octets:1 Measurement Request field format for a WRSS request

12. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 12 WRSS report element Defined as a new 802.11h measurement type: NameMeasurement Type Basic report0 Clear Channel Assessment (CCA) report 1 Receive power indication (RPI) histogram report 2 WRSS report3

13. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 13 WRSS report element (cont’d) The measurement report field corresponding to a WRSS report is shown below.. Measurement Report field format for a WRSS report

14. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 14 WRSS value mapping The WRSS value in a WRSS report element is an integer from 0 to 255. The mapping to the range from -60 dBm to -30 dBm with a resolution of 0.2 dBm is shown below. WRSS valuein dBm 0-60 1-59.8 2-59.6 …… 149-30.2 150-30 151 ~ 255reserved

15. doc.: IEEE 802.11-05/0217r0 Submission March 2005 Jason Liu and Justin McNew, TechnoComSlide 15 dot11WRSSCapabilityClass If necessary, WRSS capability classes can be defined to indicate a device capability on WRSS, for example: Class1: –accuracy = 3 dB, –resolution = 0.2 dBm, –range -60 dBm to -30 dBm. Class2: –accuracy = 5 dB, –resolution = 0.5 dBm, –range -110 dBm to 0 dBm.