초록 ▼

A controller (120), in response to receiving a request for a group call (201) targeting a group (101), allocates at least one power adjustment channel to the group call (202) and sends identification of the at least one power adjustment channel to at least some of the subscriber units in the group (

A controller (120), in response to receiving a request for a group call (201) targeting a group (101), allocates at least one power adjustment channel to the group call (202) and sends identification of the at least one power adjustment channel to at least some of the subscriber units in the group (203). Using the at least one power adjustment channel, the controller also sends unique power adjustment information to each of the at least some subscriber units (204). Unique power adjustment channel access information is also sent to the subscriber units so that each subscriber unit can receive its own unique power adjustment information (503) and adjust its inbound transmission power (504) in response. In this manner, efficient reverse power control is provided for multiple subscriber units thereby facilitating group calls in CDMA systems.

대표청구항 ▼

[ We claim:] [8.]8. In a wireless CDMA communication system comprising at least one base station coupled to a controller, the at least one base station being in wireless communication with a plurality of subscriber units via at least one outbound traffic channel, the plurality of subscriber units be

[ We claim:] [8.]8. In a wireless CDMA communication system comprising at least one base station coupled to a controller, the at least one base station being in wireless communication with a plurality of subscriber units via at least one outbound traffic channel, the plurality of subscriber units being in wireless communication with the at least one base station via a respective plurality of inbound traffic channels, a method for the controller to establish a group call, the method comprising steps of:receiving, from a requesting subscriber unit of a group, a request for the group call, wherein at least a subset of the plurality of subscriber units are logically arranged into the group;allocating at least one outbound power adjustment channel to the group call, the at least one outbound power adjustment channel being in addition to the at least one outbound traffic channel and the plurality of inbound traffic channels and enabling the controller to provide unique inbound power adjustment information to at least some subscriber units of the group; andresponsive to the request, sending, to the at least some subscriber units of the group, identification of the at least one outbound power adjustment channel.