Bug 2532

Summary: Inconsistencies between 802.11n MCS and NSS value reported in TXVECTOR
Product: ns-3 Reporter: sebastien.deronne
Component: wifiAssignee: sebastien.deronne
Status: RESOLVED FIXED    
Severity: normal CC: ns-bugs
Priority: P3    
Version: ns-3.26   
Hardware: All   
OS: All   
Attachments: patch to fix

Description sebastien.deronne 2016-10-26 15:28:07 UTC
Created attachment 2639 [details]
patch to fix

When selecting a constant 802.11n rate higher than MCS 7 (let's choose MCS 31 as an example), we observe for the first frame sent by the non-AP station that TXVECTOR reports NSS = 1 iso 4 while the frame is transmitted using MCS 31 (i.e. 4 MIMO streams). 

After investigating, issue is due to the fact we do not read HT capabilities in the beacon frames. I also added some extra checks to stop simulation when impossible combinations are encountered.
Comment 1 sebastien.deronne 2016-10-30 04:23:23 UTC
This is the next fix I'd like to push
Comment 2 sebastien.deronne 2016-11-01 06:27:40 UTC
Pushed in changeset 12385:54003ae0e2d4