Patent ID: 9622198
Date: 2017-04-11
CPC Classifications: H04W

Claim:
1. A method of transmitting power headroom reports from a wireless terminal to a base station, wherein a primary component carrier and at least two secondary component carriers are provided for uplink transmissions from the wireless terminal to the base station, wherein the at least two secondary component carriers include first and second secondary component carriers, wherein a respective component carrier index is assigned to each of the at least two 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 two secondary component carriers; generating a MAC control element including the power headroom reports for the primary component carrier and for each of the at least two secondary component carriers including the first and second secondary component carriers, wherein the power headroom reports for each of the at least two secondary component carriers are arranged in order of the component carrier indices for the respective secondary component carriers, wherein the power headroom report for the primary component carrier is included in an 8 bit primary component carrier octet of the MAC control element, wherein the power headroom report for the first secondary component carrier is included in an 8 bit first secondary component carrier octet of the MAC control element, wherein the power headroom report for the second secondary component carrier is included in an 8 bit second secondary component carrier octet of the MAC control element, and wherein no specific component carrier identifier and no component carrier index is included in the 8 bit primary component carrier octet, in the 8 bit first secondary component carrier octet, and in the 8 bit second secondary component carrier octet; 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.