Carrier Aggregation

LTE-Advanced carrier aggregation increases the effective bandwidth in order to improve upon the prior maximum carrier bandwidth limit of 20 MHz. Carrier aggregation achieves an increased network capacity by combining multiple carriers of various bandwidths to improve uplink and downlink transmission speeds.


Carrier Aggregation Results in More Speed

Carrier aggregation achieves much higher data rates and higher data capacity than the prior releases of LTE. Carrier aggregation can combine component carriers with various bandwidths such as 1.4, 3, 5, 10, 15 or 20 MHz to achieve bandwidths as high as 100 MHz.



Intra-Band Carrier Aggregation Simplifies Timing Synchronization

Carriers in the same band can be aggregated in LTE-Advanced. These carriers can be synchronized with a primary carrier or can be grouped in different carrier groups. Synchronizing intra-band carriers with one reference carrier simplifies timing synchronization in both downlink and uplink communications.



Carrier Aggregation Offers More Network Deployment Alternatives

Seamless coverage along with high throughput can be achieved by carrier aggregation. Carrier aggregation may employ many different deployment scenarios. Macro cell carriers providing large coverage areas can be aggregated with carriers of remote radio heads and repeaters offering efficient coverage areas for hot spots.



Inter-Band Carrier Aggregation Provides More Flexibility

Carriers in the different bands can be aggregated in LTE-Advanced. This provides flexibility to wireless operators to aggregate their non-contiguous spectrum in different bands and offer higher speeds and capacity to customers. Inter-band carrier aggregation employs a new technology that coordinates timing among the more complex transceiver architecture.






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