Uplink Carrier Aggregation

uplink carrier aggregation

image ©researchgate



Carrier aggregation is used to increase the data rate whereby multiple frequency blocks (component carriers) can be used by the same user. So the data rate to that user is increased from that available on a single channel. Used in 4G-LTE+ to allow heavy users to download large amount of data. The assumption underlying much of the carrier technology is that users will download large data files but the uplink will be much smaller files. This is the case in most instances.

But, in these days of social media and live podcasting etc, users will be uoloading signifiant amounts of data especially when live streaming (uploading) in 4K

Enhanced uplink carrier aggregation is the technology that allows the uplink to travel over multiple channels, at different frequencies, to the destination. By using carrier aggregation on the uplink then the mid range frequencies (3.4-3.8GHz) are used much more efficiently in situations where there is high demand. The image on Ericsson's site has many fans uploading video from a concert. This is a high demand for uplink, something that has grown in recent years.