Good Evening Folks.
I'm reading a book about 802.11n and found a very interesting thing. Here is the quote:
"Energy detection Energy detection is based on a simple rule that a strong signal will block 802.11 transmissions. To address the need to defer transmission in the face of strong interference, 802.11n specifies that a signal that is 20 dB above the minimum sensitivity will also cause the CCA to set the channel busy. That is, energy of -62 dBm is strong enough to cause the medium to be busy, even if no signal can be decoded"
Gast, Matthew S.. 802.11n: A Survival Guide: Wi-Fi Above 100 Mbps (Kindle Locations 1335-1339). O'Reilly Media. Kindle Edition.
The quote seems like applies to the energy from a non-specified channel? So if my AP which is set to ch 1 will sense the -62 dBm signal on any channel (for intstance 11), then it cannot transmit? The book is about 802.11n protocol...
I'm reading a book about 802.11n and found a very interesting thing. Here is the quote:
"Energy detection Energy detection is based on a simple rule that a strong signal will block 802.11 transmissions. To address the need to defer transmission in the face of strong interference, 802.11n specifies that a signal that is 20 dB above the minimum sensitivity will also cause the CCA to set the channel busy. That is, energy of -62 dBm is strong enough to cause the medium to be busy, even if no signal can be decoded"
Gast, Matthew S.. 802.11n: A Survival Guide: Wi-Fi Above 100 Mbps (Kindle Locations 1335-1339). O'Reilly Media. Kindle Edition.
The quote seems like applies to the energy from a non-specified channel? So if my AP which is set to ch 1 will sense the -62 dBm signal on any channel (for intstance 11), then it cannot transmit? The book is about 802.11n protocol...