Within a hard handoff procedure of a mobile terminal from a first radio sector
to a second radio sector, a handoff manager requests the allocation of network
resources associated with the second radio sector for the mobile terminal. If the
second radio sector does not have sufficient network resources to support the mobile
terminal, the handoff manager instructs the mobile terminal to switch into a dormant
mode. By doing this, the handoff manager can delay the disconnection of the packet
data session until there is sufficient network resources or until an internal packet
data protocol error occurs due to a request timing out. In the case that sufficient
resources become available, the handoff manager instructs the mobile terminal to
return to a connected mode. One advantage of this procedure is the reduced need
to re-establish a data packet session in cases that there is a temporary lack of
sufficient network resources during a hard handoff.