LTE Carrier Frequency and EARFCN

EARFCN stands for E-UTRA Absolute Radio Frequency Channel Number.In LTE, the carrier frequency in the uplink and downlink is designated by EARFCN, which ranges between 0-65535. EARFCN uniquely identify the LTE band and carrier frequency. For example Band-1 and Band-4 can have same Rx frequency 2110-2170 MHz,  but their EARFCN […]

LTE Evolution

Why LTE is required? Exponential growth of mobile data traffic, demands the need for increasing the capacity of existing mobile networks The emerging internet applications requiring high data rates and low latency How LTE is evolved? LTE is initiated as Release-7 study item. What factors driving LTE Reduced latency high […]

LTE Network Architecture

Main requirements of LTE are: high spectral efficiency high peak data rates short round trip time flexibility in frequency and bandwidth eNB or Evolved Node B is a network hardware in LTE that communicates with UE or mobiles. It contains Transmitter, Receiver and Control section. Node B is the counterpart […]

LTE Frequency Bands

LTE support two duplexing modes: TD-LTE : Time Divison Duplexing LTE. Both downlink and uplink transmission takes place at the same carrier frequency, unpaired spectrum, at different time slots. The UL and DL slots are isolated through gaurd period. One merit TD-LTE is UL and DL capacity can be changed […]

Carrier Aggregation in LTE-A

Carrier Aggregation(CA) is one of the most desired feature of LTE-Advanced. In LTE-A aggregation of carriers is used to increase the bandwidth and thereby increase data rates upto 1Gbps. Each aggregated carrier is referred to as Component Carrier(CC), can have BW of 1.4, 3, 5, 10, 15 or 20 MHz. […]