Patent ID: 6178166
Filing Date: 2001-01-23
Classification: H04W

Abstract:
A method for a wireless CDMA communication infrastructure to establish a group call, wherein the wireless CDMA communication infrastructure comprises a plurality of base transceiver systems, and wherein each base transceiver system, of the plurality of base transceiver systems, provides wireless communication service to any communication unit, of a plurality of communication units, that is in the service coverage area of that base transceiver system, the method comprising the steps of:receiving, from a requesting communication unit of a group, a request for a group call with other communication units of the group, wherein at least a subset of the plurality of communication units are logically arranged into the group;allocating a single voice channel for the group call at each base transceiver system of the plurality of base transceiver systems that is providing communication service to at least one communication unit of the group, wherein the voice channel at each base transceiver system is allocated for the conveyance of non-power-adjustment information exclusively; andallocating a power adjustment channel for the group call for each communication unit of the group at the base transceiver system, of the plurality of base transceiver systems, that is providing communication service to that communication unit, wherein the power adjustment channel for each communication unit of the group is allocated for the conveyance of power adjustment information exclusively.