The application means selects {HEAD ~ the desired packet data network identifiers} based on {TAIL ~ services} requested by applications 
based on
The application means selects { HEAD ~ the desired packet data network identifiers } based on { TAIL ~ services } requested by applications
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH