Apparatus and method for transmitting/receiving activation indicator regarding component carrier in wireless communication system

摘要

A method for supporting activation/deactivation of serving cells by a base station (eNB) in a wireless communication system provides decreased overhead and decreased power consumption for a user equipment (UE). The method includes configuring M supportable serving cells in the UE, configuring an indicator indicating activation/deactivation of each of the M serving cells, configuring a medium access control (MAC) message which includes a MAC control element (CE) and a logical channel identifier (LCID), the MAC CE including the indicator configured for each of the M serving cells and having a length corresponding to an integer multiple of 8 bits, the LCID indicating that the MAC CE includes the indicator indicating activation/deactivation of each serving cell, and transmitting the configured MAC message to the UE. Accordingly, a control channel or data channel regarding a component carrier is selectively received depending on whether the component carrier is activated.

主权项

1. A method for supporting activation/deactivation of serving cells configured in a user equipment (UE) in a wireless communication system, the method comprising:
receiving a medium access control (MAC) message from a base station (eNB); identifying, by a logical channel identifier (LCID) related to activation/deactivation, that a MAC control element (MAC CE) of 8 bits related to activation/deactivation is included in the received MAC message, wherein the MAC CE includes a plurality of indicators and an indicator in the plurality of indicators is 1 bit that indicates activation or deactivation of a serving cell corresponding to the indicator; and performing reception of downlink control channel and data channel, or reception of downlink control channel, or reception of downlink data channel, or transmission of uplink data channel by using the serving cell if the indicator indicates activation.