METHOD FOR ALLOWING TERMINAL TO TRANSMIT POWER HEADROOM INFORMATION IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

摘要

A method and a user equipment (UE) are described for transmitting power headroom (PH) information in a wireless communication system. A primary cell and at least one secondary cell are configured with the UE. One logical channel identifier (LCID) field is configured in a medium access control (MAC) sub-header. The one LCID field indicates a presence of a PH MAC control element (CE). A MAC protocol data unit (PDU) comprising the MAC sub-header and the PH MAC CE is transmitted. The PH MAC CE includes PH information for both the primary cell and the at least one secondary cell.

主权项

1. A method for transmitting, by a user equipment (UE) with which a primary cell and at least one secondary cell are configured, power headroom (PH) information in a wireless communication system, the method comprising:
configuring one logical channel identifier (LCID) field in a medium access control (MAC) sub-header, the one LCID field indicating a presence of a PH MAC control element (CE); and transmitting a MAC protocol data unit (PDU) comprising the MAC sub-header and the PH MAC CE, wherein the PH MAC CE includes PH information for both the primary cell and the at least one secondary cell.