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RE: The problem of media sense of 802.21

Liang, there has been some work in 802.11k on medium sense, but it was rejected by the 802.11 Working Group.  There was an 11k measurement called Medium Sensing Time Histogram.  If you have access to 802.11 archives, you can get 11k draft 2.0 that still contains the measurement.  In the present draft of 11k (D3.0), there is a Noise Histogram that measures the non-802.11 noise over time.

Richard H. Paine
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From: CHEN, LIANG -HCHBJ [mailto:lchen@hitachi.cn]
Sent: Monday, October 24, 2005 12:45 AM
To: STDS-802-21@listserv.ieee.org
Subject: The problem of media sense of 802.21

Dear all,

 

I am a researcher in China working for the handover issue and also a new to the 802.21 community.  I understand that the goal of 802.21 is to provide the integrated wireless networking service among 3G, 2G, WiFi, WiMax, etc., without the interruption of upper layer applications.  So it should be an issue to detect the available wireless network before the handover.  And the necessary information to be probed in advance might include the signal strength, bandwidth, price and the accessibility between the new network and the current used network.

 

Due to my insufficient cultivation in the 802.21 communication, could anyone here show me your pervious work on the topic of media sense please?

 

Thanks!

 

Best regards,

 

Liang Chen

Tel: (8610) 65908111 ext 3054, Fax: (8610) 65908179

Hitachi(China) Research and Development Corp.

R.1701, Beijing Fortune Building, Chaoyang District,

Beijing, China, 100004.

 


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