1. April 2009
doc.: IEEE /xxxxr0
July 2010
Quieting Adjacent BSS mechanism for coexistence with other 60GHz systems
Date: 2010-July
Authors:
Zhou Lan NICT
Rich Kennedy, Research In Motion

2. April 2009
doc.: IEEE /xxxxr0
July 2010
Abstract
This is a submission for comment resolution on D0.1 for comment #335. It provides a mechanism named as quieting adjacent BSS (QAB) to facilitate the coexistence of ad system with other systems operating on 60GHz band, such as c.
Zhou Lan NICT
Rich Kennedy, Research In Motion

3. April 2009
doc.: IEEE /xxxxr0
July 2010
Motivation
has defined the procedure to quiet the operating channel so the channel can be tested for the presence of the interference
This mechanism can be utilized to detect other systems operating on 60GHz band for the purpose of coexistence
However according to the procedure, the involved STAs are confined inside the same BSS or IBSS. During the period when STAs in a certain BSS are quieted, STAs in an adjacent BSS may still be allowed to transmit
As a consequence, in the quiet period which is supposed to be used to detect other systems, there might be signals from adjacent BSSs, which interfere the detection
It is important to have a mechanism to guarantee the clearance of the quiet periods for detecting other systems
Zhou Lan NICT
Rich Kennedy, Research In Motion

4. Problem Illustration DS July 2010 BSS1 BSS2 BSS3 802.15.3c system BSS3
April 2009
doc.: IEEE /xxxxr0
July 2010
Problem Illustration
Synchronized
Quiet Period B B B
BSS1
Quiet
Quiet
Quiet B B B
BSS2
Quiet
Quiet
Quiet B B B
BSS3
Quiet
Quiet
Quiet B
c system
Beacon
Quiet
Quiet period
BSS3
BSS1
BSS2 DS
Zhou Lan NICT
Rich Kennedy, Research In Motion

5. Quieting Adjacent BSS (QAB) mechanism
April 2009
doc.: IEEE /xxxxr0
July 2010
Quieting Adjacent BSS (QAB) mechanism
The purpose of the QAB is to guarantee a clear listen period that will not be used by STAs in the adjacent BSSs
A QAB request is sent by an AP to one or multiple APs that are members of the other BSSs
Upon receiving the request, an responder AP may schedule the quiet periods according to the request to synchronize quiet periods with the requester AP
The responder AP received the request shall respond and indicate whether the QAB operation will be performed or not
Zhou Lan NICT
Rich Kennedy, Research In Motion

6. April 2009
doc.: IEEE /xxxxr0
July 2010
Conclusion
This submission provides solution for comment #335 on the comment resolution for D0.1
The submission proposes a mechanism that facilitates the coexistence with other systems operating in 60GHz band
Zhou Lan NICT
Rich Kennedy, Research In Motion