using acronym package for all abbreviations

also began working on "identifiers" part

glossary.tex

@@ -1,19 +1,37 @@
 \todo{include long version of abbreviations at first mention}
 
-\textbf{AU}: application unit
+\begin{acronym}[GN6ASL]
 
-\textbf{CCU}: communication \& control unit
+\acro{AU}{application unit}
 
-\textbf{ETSI}: European Telecommunications Standards Institute
+\acro{BTP}{Basic Transport Protocol}
 
-\textbf{ITS}: Intelligent Transportation Systems
+\acro{CCU}{communication \& control unit}
 
-\textbf{LS}: GeoNetworking Location Service
+\acro{ETSI}{European Telecommunications Standards Institute}
 
-\textbf{LT}: GeoNetworking Location Table
+\acro{GN}{GeoNetworking}
 
-\textbf{OBU}: on-board unit
+\acro{GN6ASL}{GeoNetworking to IPv6 Adaptation Sub-Layer}
 
-\textbf{RSU}: road-site unit
+\acro{GNSS}{Global Navigation Satellite System}
 
-\textbf{VANET}: vehicular ad-hoc network
+\acro{IPv6}{Internet Protocol version 6}
+
+\acro{ITS}{Intelligent Transportation Systems}
+
+\acro{LS}{GeoNetworking Location Service}
+
+\acro{LT}{GeoNetworking Location Table}
+
+\acro{OBU}{on-board unit}
+
+\acro{OSI}{Open Systems Interconnection}
+
+\acro{RSU}{road-site unit}
+
+\acro{VANET}{vehicular ad-hoc network}
+
+\acro{V2X}{vehicle-to-everything}
+
+\end{acronym}