ENHANCED POWER HEADROOM REPORT FORMAT

摘要

The exemplary embodiments provide in one aspect thereof a method to compose and transmit an uplink signaling message to report power headroom for a plurality n of component carriers, where the uplink signaling message comprises n entries each comprising an associated power headroom value. In one exemplary embodiment the plink signaling message comprises n entries each comprising an associated power headroom value for a corresponding one of the n component carriers, the plink signaling message further comprises at least one indicator for providing an indication, for each power headroom value, whether a value of a maximum output power for that component carrier, that was used to calculate the power headroom, is present in the plink signaling message, or whether a last previously reported value of the maximum output power in the plink signaling message that is associated with another entry and associated power headroom value, should be used instead. In another exemplary embodiment the plink signaling message comprises a first indicator for providing an indication, for the associated power headroom value, whether a value of a maximum output power for that component carrier that was used to calculate the power headroom is present in the plink signaling message, and where each of the n entries of the plink signaling message further comprises a second indicator for indicating whether the associated power headroom is virtual or real, and where in a particular one of the n entries if the first indicator indicates that the maximum output power is not present in the plink signaling message, and the second indicator indicates that the associated power headroom is real, then the maximum output power used in the calculation of the associated power headroom is indicated to be a last previously reported the maximum output power in the same plink signaling message.