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!
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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)
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