Determining power headroom in a wireless network

摘要

Methods and apparatus for power control are described. Methods are included for calculating and signaling power control related data to support multiple component carriers (CCs) for which transmission may be accomplished with one or more WTRU power amplifiers (PAs). Methods are included for calculating and signaling one or more of CC-specific power control related data and PA-specific power control related data. The power control related data may include one or more of maximum power, power headroom, and transmit power. Methods for selecting which power control related data to exchange are included. Methods are included for calculating and signaling power control related data for physical UL shared channel (PUSCH), physical UL control channel (PUCCH), and simultaneous PUSCH and PUCCH transmission.

主权项

1. A method for reporting power headroom, the method comprising:
calculating a physical uplink control channel (PUCCH) transmit power associated with a reference downlink control information (DCI) format in the absence of a PUCCH transmission; determining, via a wireless transmit/receive unit (WTRU), a power headroom using a physical uplink shared channel (PUSCH) transmit power and the PUCCH transmit power; and sending the power headroom.