APPARATUS AND METHOD OF CONTROLLING UPLINK POWER IN WIRELESS COMMUNICATION Russian patent published in 2011 - IPC H04B7/05 

FIELD: information technology.

SUBSTANCE: periodic power control command can be sent over a downlink to control and/or correct an uplink power level employed by an access terminal. Each periodic power control command can be generated based on an uplink periodic transmission sent from the access terminal. The periodic power control commands can be communicated via a physical downlink control channel (PDCCH) or in-band signalling. Also, access terminals can be grouped to enhance efficiency of downlink transfer of the periodic power control commands. The periodic power control commands can be halted upon freeing of access terminal uplink resources. For instance, these resources can be freed after an inactivity period of the access terminal. Thereafter, the access terminal can initiate random access (e.g., leveraging open loop mechanisms) to resume periodic power control command transmission.

EFFECT: easy application of periodic corrections when controlling power in a closed loop in a wireless communication environment.

88 cl, 15 dwg