What is uplink data rate?
What is uplink data rate?
Data rate = Number of bytes transferred/Total time taken(second). It is specified in Mbps or Mega bits per second.
What is LTE uplink?
Overview. Long Term Evolution (LTE) is the next step forward in cellular 3G services. Expected in the 2008 time frame, LTE is a 3GPP standard that provides for an uplink speed of up to 50 megabits per second (Mbps) and a downlink speed of up to 100 Mbps. LTE will bring many technical benefits to cellular networks.
How is LTE data uplink throughput calculated?
If modulation used is 64 QAM (6 bits per symbol) then throughput will be 16.8×6=100.8Mbps for a single antenna port. If we consider a 2×2 MIMO system then this throughput will be double i.e. 100.8×2= 201.6 Mbps and with 4×4 MIMO system then throughput is about 100.8×4= 403.2 Mbps.
What is the downlink and uplink peak data rate in LTE?
LTE release 8 supports peak data rates of 300 Mbit/s in the downlink and 75 Mbit/s in the uplink by using spatial multiplexing of four layers (4 × 4 MIMO) in the downlink and 64QAM in both downlink and uplink.
Why LTE is required?
Significantly higher data rates (50-100Mbps) and faster connection times are perhaps the most remarkable requirements relative to 3G/3.5G. LTE also introduces scheduling for shared channel data, HARQ and AMC (Adaptive Modulation and Coding).
What is the maximum uplink data rate?
Peak data rates reach 28 Mbps in downlink and 11.5 Mbps in uplink (42.2 Mbps in downlink and 22 Mbps in uplink with downlink/uplink dual carrier operation and the combination of MIMO (multiple input/multiple output), antennas and 64QAM modulation).
How is LTE data rate calculated?
So the total bits carried by 300 subcarriers for the duration of a symbol is 300 X 6 = 1800 bits. Again 1 symbol is of 71.4 microseconds for LTE. So the data rate is 1800 / 71.4 = 25.2 Mbps. For 10 MHz using the same formula the maximum data rate in downlink is 50.4 Mbps and for 20 MHz it is 100.8 Mbps.
How is data rate calculated in LTE?
What are the uplink and downlink rates for LTE?
LTE Data rates, frequency and bandwidth. Generation 3G 4G Technology UMTS, HSDPA LTE Uplink (Theoretical) 5.7 Mbps 50 Mbps Downlink (Theoretical) 14 Mbps 100 Mbps Bandwidth 5 MHz 20 MHz
How is the peak data rate of LTE calculated?
The LTE throughput calculation is based on modulation type, TBS index and TBS size. Let us understand peak data rate or LTE throughput calculation with following LTE system configuration. 20MHz channel, 4×4 MIMO configuration, Theoretically, Peak Data rate= No. of REs per subframe x no. of bits per modulation symbol
How to calculate maximum data rate-downlink throughput?
So the total bits carried by 300 subcarriers for the duration of a symbol is 300 X 6 = 1800 bits. Again 1 symbol is of 71.4 microseconds for LTE. So the data rate is 1800 / 71.4 = 25.2 Mbps. So the formula for calculating maximum data rate at physical layer is:
How is the UE data rate calculated in 3GPP?
3GPP specifications TS 38.306 shares a formula for calculating the maximum data rate that a UE can support in downlink and uplink. The formula takes into account Carrier Aggregation ( CA ). The calculation is per component carrier ( CC) and then added up over J J carriers. Among the constants, 10−6 10 − 6 gives the final value in Mbps.