Techniques to efficiently broadcast position location data (PLD) from
a base station to a number of terminals. In one aspect, PLD messages are classified
into groups, and each group is broadcast in a different manner. For example, a
first group of messages for PLD related to the base station is broadcast in an
unscheduled format, and a second group of messages for PLD related to GPS satellites
is broadcast in a scheduled format. In another aspect, a schedule for the second
group describes the specific PLD elements selected for broadcast, their broadcast
order, and the specific time intervals of their broadcast. The schedule is valid
for a particular scheduled time interval, and the scheduling table is broadcast
multiple times during the scheduled time interval to allow the terminals to quickly
retrieve the schedule and ascertain what PLD information is being broadcast and
where to look for specific PLD elements.
