Patent ID: 8571549

Claim:
A method of supporting a wireless communication device operating within a first radio system, the method comprising: receiving, at the first radio system, a request from the wireless communication device; obtaining a first set of permissions from a home radio system, associated with and as a function of at least one of (i) the wireless communication device when the wireless communication device's home radio system is not the first radio system and (ii) a radio group, of which the wireless communication device is a member, when the radio group's home radio system is not the first radio system; obtaining a second set of permissions from the first radio system associated with and as a function of at least one of (i) the wireless communication device and (ii) the radio group of which the wireless communication device is a member; obtaining, from the first radio system, field permissions indicator data identifying the permissions in the second set of permissions that can be controlled by the first set of permissions and the permissions in the second set of permissions that cannot be controlled by the first set of permissions; merging the first set and the second set of permissions, as a function of the field permissions indicator data, to obtain a merged set of permissions; and responding to the request in accordance with the merged set of permissions.