Methods of providing power headroom reports arranged in order of component carrier indices and related wireless terminals and base stations

摘要

Power headroom reports may be transmitted from a wireless terminal to a base station wherein a primary component carrier and at least one secondary component carrier are provided for uplink transmissions from the wireless terminal to the base station and wherein a respective component carrier index is assigned to each of the at least one secondary component carriers provided for the wireless terminal. Respective power headroom reports may be generated for the primary component carrier and for each of the at least one secondary component carriers, and a MAC control element may be generated including the power headroom reports for the primary and secondary component carriers. More particularly, the power headroom reports for each of the at least one secondary component carriers may be arranged in order of the component carrier indices for the respective secondary component carriers. The MAC control element including the power headroom reports for the primary and secondary component carriers may be transmitted from the wireless terminal to the base station over one of the component carriers. Related wireless terminals, and base stations are also discussed.

主权项

1. A method of transmitting power headroom reports from a wireless terminal to a base station, wherein a primary component carrier and at least one secondary component carrier are provided for uplink transmissions from the wireless terminal to the base station, wherein a respective component carrier index is assigned to each of the at least one secondary component carriers provided for the wireless terminal, the method comprising:
generating respective power headroom reports for the primary component carrier and for each of the at least one secondary component carriers; generating a MAC control element including the power headroom reports for the primary and secondary component carriers, wherein a Type 2 and Type 1 power headroom reports for the primary component carrier are provided first, and then Type 1 power headroom reports for each of the at least one secondary component carriers are arranged in an order according to the component carrier indices for the respective secondary component carriers, and wherein no specific component carrier identifier field is included for each of the Type 1 power headroom reports for each of the at least one secondary component carriers; and transmitting the MAC control element including the power headroom reports for the primary and secondary component carriers from the wireless terminal to the base station over one of the component carriers.