1. Final Comments on TPC and DFS Proposal
9/11/2018
doc.: IEEE /xxx
May 2001
Final Comments on TPC and DFS Proposal
S. Choi1, Peter Ecclesine4, S. Gray2, M. Kasslin2, S. Mangold3, Andrew Myles4, A. Soomro1, David Skellern4
Philips Research1, Nokia Research Center2,
ComNets Aachen University3 and Cisco4
Aachen Univ, Cisco, Nokia and Philips
Sunghyun Choi, Philips Research

2. May 2001
Summary for DFS
New management messages are added to allow STAs to measure
RSSI (current frequency channel)
RSSRI (new frequency channel)
BSS, QBSS, CCA busy fraction, CCA busy interval, CCA busy duration and Foreign PLCP Headers
Measurement reports
Allow AP to determine if IEEE802.11h, HiperLAN/2 or other sources of interference exist in the frequency channel
Allows flexibility for AP vendors to do proprietary measurements and make decisions concerning frequency channel changes
Aachen Univ, Cisco, Nokia and Philips

3. May 2001
Summary for TPC
Service Field transmit power field allows easy estimation of path loss
Power capabilities are conveyed by a STA during Association
BSS Power ceiling is conveyed in Beacon
DCF
Suggested maximum power level for STAs
Hidden node detection suggested in IEEE /219r0, which will:
alllow STAs determine power autonomously, if desired
allow APs determine an appropriate suggested max power level
PCF
STAs decide power autonomously
Improve battery life
Improve QoS
Aachen Univ, Cisco, Nokia and Philips

4. May 2001
Late Development
The proposal in IEEE /169r2 has resolved issues for a merger with IEEE /217
Additional elements for identifying BSSs residing on different frequency channels
Ability in PCF and HCF for a receiving entity to indicate suggested power changes to sending entity
Aachen Univ, Cisco, Nokia and Philips