--- a/src/wifi/model/edca-txop-n.h	Tue Aug 13 10:37:49 2013 -0700
+++ b/src/wifi/model/edca-txop-n.h	Tue Aug 13 22:05:25 2013 -0700
@@ -58,7 +58,10 @@
   STA,
   AP,
   ADHOC_STA,
-  MESH
+  MESH,
+  HT_STA,
+  HT_AP,
+  HT_ADHOC_STA
 };