What is a TDD 4G/LTE 5G FDD 4G/LTE 5G Base Stations
Time Division Duplex (TDD) and Frequency Division Duplex (FDD) are among the most fundamental concepts in all mobile networks, including 4G LTE and 5G NR. Effective use of FDD and TDD in full-duplex and half-duplex modes ensures successful two-way communication.
The TDD LTE bands are unpaired what requires a single band because the uplink and downlink are on the same frequency but time separated,being time multiplexed. So there are different LTE band allocations for TDD and FDD.
