Carrier Aggregation in LTE

4G LTE
,
1

Hello Dear Experts,
Does anyone knows where can I find an easy explanation of Carrier Aggregation?

2

This is a feature introduced whith what we call advanced LTE.
The scheduler in MAC layer will allocate ressources to some UEs who fill the requirement from the serving cell Pcell and frol other LTE carriers which are defined to be a subject for aggregation.

1 Like
3

Advance in order to increase the bandwidth and data rate.
Each aggregated carrier is referred to as a component carrier (CC).
The component carrier can have a bandwidth of up to 20 MHz, and a maximum of four
component carriers can be aggregated.
The individual component carriers can also be of different bandwidths.
There are several features which support different carrier aggregation scenarios.

1 Like
4

https://www.3gpp.org/technologies/keywords-acronyms/101-carrier-aggregation-explained

1 Like
5

Here you can find an excellent doc. A really “must read” if you want to learn CA (Carrier Aggregation)

2 Likes
6

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.

This technology can be applied to either the FDD or TDD variants of LTE with a maximum of five component carriers, each with a bandwidth of up to 20 MHz, resulting in a total transmission bandwidth of up to 100 MHz.

Types of Carrier Aggregation (CA)

  • Intra-band Carrier Aggregation: This form of carrier aggregation uses a single band. It is further divided up in to two parts:

  • Contiguous: This is the easiest form of LTE carrier aggregation to implement. In this the carriers are adjacent to each other. In this case you only need a single transceiver as the signal is considered as a single enlarged signal.

  • Non-contiguous: This one is slightly complicated as the carriers use the same operating band but are not adjacent to each other.

  • Inter-band non-contiguous: This form of carrier aggregation uses different bands. This is more challenging as the carriers are from different operating bands. So you need multiple transceivers to transmit/receive signals.

7

Anyone could share the parameters needed to tweak or configure for 2 CA

1 Like