Patent ID: 9722761
Date: 2017-08-01
CPC Classifications: H04L,H04W

Claim:
1. A method of configuring a secondary component carrier for a wireless device in a cellular communications network enabling carrier aggregation, comprising: obtaining capabilities of the wireless device, the capabilities indicating a frequency band combination supported by the wireless device where the frequency band combination includes a first frequency band supported by a base station and the wireless device that is used for a primary cell of the wireless device and a second frequency band supported by the wireless device but not supported by the base station; identifying an overlap between the second frequency band supported by the wireless device but not supported by the base station and a third frequency band supported by the base station but not supported by the wireless device; and configuring the secondary component carrier for the wireless device in the overlap between the second frequency band supported by the wireless device but not supported by the base station and the third frequency band supported by the base station but not supported by the wireless device, wherein configuring the secondary component carrier in the overlap comprises indicating, to the wireless device, an Evolved Universal Terrestrial Radio Access, E-UTRA, Absolute Radio Frequency Channel Number, EARFCN, of the second frequency band supported by the wireless device but not supported by the base station, and wherein the second frequency band supported by the wireless device but not supported by the base station is a downlink only frequency band, and the third frequency band supported by the base station but not supported by the wireless device is a Frequency Division Duplexing, FDD, frequency band.