From b3e7a97df01882d1bc412b056ae84ca773f6b5b7 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Mon, 24 Nov 2008 19:28:37 +0200 Subject: [PATCH] Add some notes on which channels can be used with HT40- and HT40+ This is not a complete list, but at least it can provide some help for whoever is trying to configure hostapd for 802.11n HT40 operation. --- hostapd/hostapd.conf | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf index 8df35c8ba..f8771b785 100644 --- a/hostapd/hostapd.conf +++ b/hostapd/hostapd.conf @@ -384,6 +384,14 @@ wme_ac_vo_acm=0 # channel below the primary channel; [HT40+] = both 20 MHz and 40 MHz # with secondary channel below the primary channel # (20 MHz only if neither is set) +# Note: There are limits on which channels can be used with HT40- and +# HT40+. Following table shows the channels that may be available for +# HT40- and HT40+ use per IEEE 802.11n Annex J: +# freq HT40- HT40+ +# 2.4 GHz 5-13 1-7 (1-9 in Europe/Japan) +# 5 GHz 40,48,56,64 36,44,52,60 +# (depending on the location, not all of these channels may be available +# for use) # Spatial Multiplexing (SM) Power Save: [SMPS-STATIC] or [SMPS-DYNAMIC] # (SMPS disabled if neither is set) # HT-greenfield: [GF] (disabled if not set)