Patent ID: 6678260
Filing Date: 2004-01-13
Classification: H04B,H04J,H04L,H04Q,H04W

Abstract:
A method for maintaining wireless communications links between a base station processor and a plurality of subscriber access units comprising:defining a plurality of wireless communication channels operable for wireless communication between the base station processor and at least one of the subscriber access units, each of the subscriber access units corresponding to a user; defining a plurality of time slots within at least one of the wireless communication channels; determining at least one of a plurality of users; assigning at least one of the plurality of time slots to each of the determined plurality of users; transmitting a wireless signal from at least one of the plurality of users on one of the plurality of wireless communication channels during the time slot corresponding to that user, the wireless signal sufficient to maintain synchronization between the user and the base station; receiving the wireless signal at the base station processor; determining, from the time slot in which the message was received, the identity of the user; and determining whether the wireless signal is indicative of a need for an additional wireless communication channel for the identified user.