Patent ID: 9386601
Filing Date: 2016-07-05
CPC Classification: H04L,H04W

Claim Text:
1. A method comprising: sending downlink control information to a user equipment, the downlink control information comprising an indication of an access codeword and an indication indicating that at least one component carrier of a plurality of aggregated component carriers is activated; and receiving, from the user equipment, a configuration complete message, wherein the access codeword is transmitted from the user equipment as an acknowledgement that the at least one component carrier is activated, and wherein the access codeword indicates a dedicated preamble for accessing the activated at least one component carrier; wherein the access codeword is received on an uplink channel which lies in the at least one activated component carrier for the case in which there is an activated uplink channel in the at least one activated component carrier, or the access codeword is received on a previously activated uplink channel for the case in which there is no activated uplink channel in the at least one activated component carrier.