Methods and Devices for Carrier Aggregation in a Wireless Communication System

A method performed in a network node (21, . . . , 2n;

• 31, . . . , 3n) of a communication system for wireless communication, the network node (21, . . . , 2n;
• 31, . . . , 3n) being configured to utilize a first bandwidth, B1, allocated in accordance with a first communication standard, wherein a first carrier and a second carrier are allocated within the first bandwidth B1, the method comprising:
• utilizing the first carrier for providing access to the communication system for a user device, the first carrier having a first bandwidth, Blegacy, and being configured to operate in accordance with a transmission format of the first communication standard, and
• utilizing the second carrier for communication with the user device, the second carrier having a second bandwidth, Bnon-lebacy, and being configured to operate in accordance with a transmission format of a second communication standard.

A computer program for a network node (21, . . . , 2n;

• 31, . . . , 3n) of a communication system for wireless communication, the network node (21, . . . , 2n;
• 31, . . . , 3n) being configured to utilize a first bandwidth, B1, allocated in accordance with a first communication standard, wherein a first carrier and a second carrier are allocated within the first bandwidth B1, the computer program comprising computer program code which, when run on the network node (21, . . . , 2n;
• 31, . . . , 3,), causes the network node (21, . . . , 2n;
• 31, . . . , 3n) to perform the steps of:
• utilizing the first carrier for providing access to the communication system for a user device, the first carrier having a first bandwidth, Blegacy, and being configured to operate in accordance with a transmission format of the first communication standard, and
• utilizing the second carrier for communication with the user device, the second carrier having a second bandwidth, Bnon-lebacy, and being configured to operate in accordance with a transmission format of a second communication standard.