What is meant by carrier aggregation in LTE?

Carrier Aggregation (CA) is a feature of LTE-Advanced that allows mobile operators & devices to combine two or more LTE carriers into a single data change. It leads to an increase in the capacity of the network and the data rates by exploiting fragmented spectrum allocations.

How does LTE carrier aggregation work?

Carrier Aggregation (CA) is a feature of LTE-Advanced that allows mobile operators to combine two or more LTE carriers into single data channel to increase the capacity of the network and the data rates by exploiting fragmented spectrum allocations.

How is carrier aggregation used in LTE Advanced?

LTE Carrier Aggregation. Carrier Aggregation (CA) is a technique used in LTE-Advanced to increase the peak data rate (i.e., maximum available speed) of a 4G LTE network.

Why is FDD / TDD carrier aggregation for 5G?

But Ericsson and Qualcomm have argued that FDD/TDD carrier aggregation for 5G can create a sort of goldilocks situation, in which the high-band TDD coverage area can be improved by combining TDD with low-band FDD spectrum, and the TDD spectrum can significantly improve the overall downlink throughput.

Is the number of aggregated carriers the same in FDD?

In FDD the number of aggregated carriers can be different in DL and UL, see figure 1. However, the number of UL component carriers is always equal to or lower than the number of DL component carriers. The individual component carriers can also be of different bandwidths.

How are DL and UL resources allocated in LTE?

Carrier Aggregation (FDD); The LTE-Advanced UE can be allocated DL and UL resources on the aggregated resource consisting of two or more Component Carriers (CC), the R8/R9 UEs can be allocated resources on any ONE of the CCs. The CCs can be of different bandwidths. Each aggregated carrier is referred to as a component carrier, CC.