Patent ID: 8982805
Filing Date: 2015-03-17
Classification: H04W

Abstract:
1. A wireless communications device for managing multiple component carriers by a non-contention based random access procedure, comprising: a wireless module, performing wireless transceiving to and from a radio access network; and a controller module, receiving a preamble assignment message comprising a component carrier indicator for a component carrier to be activated from the radio access network via the wireless module, transmitting, on the component carrier, a Random Access Preamble (RAP) message to the radio access network via the wireless module, receiving a Random Access Response (RAR) message corresponding to the RAP message from the radio access network via the wireless module, and determining whether to activate the component carrier in response to one of the preamble assignment message, the RAP message, and the RAR message, wherein the preamble assignment message, the RAP message, and the RAR message are received or transmitted during the non-contention based random access procedure, wherein the controller module further starts a first timer for counting a first predetermined time period in response to the RAR message or in response to receiving a Timing Advance Command (TAC) message from the radio access network via the wireless module, and deactivates the component carrier from any data transmission and reception in response to expiration of the first timer.