How does carrier aggregation reduce interference and latency?

Interference is the unwanted signal that affects the quality and performance of the communication.

Latency is the delay between the transmission and reception of the data.

CA can reduce the interference and latency of 4G systems by using different techniques, such as inter-cell interference coordination (ICIC), enhanced inter-cell interference coordination (eICIC), and coordinated multi-point transmission and reception (CoMP).

  • ICIC is a technique that allocates different frequency resources to different cells to avoid interference.

  • eICIC is a technique that uses almost blank subframes (ABS) to reduce the interference from macro cells to small cells.

  • CoMP is a technique that uses multiple base stations to transmit and receive data to and from the same device, improving the signal quality and diversity.

By using these techniques, CA can improve the signal-to-interference-plus-noise ratio (SINR) and the round-trip time (RTT) of the communication.

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