| Bug ID |
8894
|
| Summary |
Tx MCS set is not interpreted properly in WLAN beacon frame
|
| Classification |
Unclassified
|
| Product |
Wireshark
|
| Version |
SVN
|
| Hardware |
x86
|
| OS |
All
|
| Status |
UNCONFIRMED
|
| Severity |
Normal
|
| Priority |
Medium
|
| Component |
Wireshark
|
| Assignee |
[email protected]
|
| Reporter |
[email protected]
|
| CC |
[email protected]
|
Created attachment 11141 [details]
beacon frame with HT capabilty info
Build Information:
--
Summary:Transmit MCS set is not interpreted properly in the Wireshark.
Description:
In the beacon HT capabilities even for a 2x2 or 3x3 AP (supporting multiple Tx
spatial streams ) the Tx max number of spatial streams is always intepreted as
following
" Tx Maximum Number of Spatial Streams Supported: 1 spatial stream (0x0000)"
which is incorrect.
With reference to the IEEE standard 802.11-2012 table 8.126 (pg 608)
According to the table spatial
Tx Maximum Number Spatial Streams Supported is when transmitting:
Set to 0 for 1 spatial stream
Set to 1 for 2 spatial streams
Set to 2 for 3 spatial streams
Set to 3 for 4 spatial streams
Only the above one is considered without considering the conditions mentioned
in the table.
This mis-interpretation needs to be fixed to show the correct Tx maximum number
of spatial streams supported by the AP.
check the beacon frame attached for reference.
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