CRS & SRS: The Hidden Heroes of The Sky

Ever wondered how your phone and the network coordinate their intricate dance of communication?

Let me break down reference signals - the invisible heroes making it all possible!

  • Downlink Reference Signals (Tower→ Device):
    Think of these as the network’s guiding stars.
    The base station sends out signals like CRS (Cell Reference Signals)
    → Primary function: Enable DL channel estimation

  • Uplink Reference Signals (Device → Tower):
    Your device isn’t just listening - it’s talking back!
    Using SRS (Sounding Reference Signals),
    your phone helps the network understand channel conditions and make smart decisions.
    → Primary function: Support uplink channel estimation.

  • It’s like a perfectly choreographed conversation:
    Tower: “Here’s how to understand my signals” (CRS)
    Your Device: “And here’s how to understand mine” (SRS)

LinkedIn: :point_down:

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