What is frequency band indicator in LTE?

Frequency bands BandDuplex modeDownlink (MHz)4FDD2110 – 21555FDD869 – 8947FDD2620 – 26908FDD925 – 960LTE frequency bands – Wikipedia en.wikipedia.org › wiki › LTE_frequency_bands

Band 40 is an LTE operating frequency Band . LTE is designed to work across a number of frequency bands – E-UTRA operating bands- currently ranging from 450 MHz up to 3.8GHz. The available bandwidths are also flexible starting with 1.4 MHz up to 20 MHz with Carrier Aggregation allowing use of wider multiples.

In telecommunication, a band – sometimes called a frequency band – is a specific range of frequencies in the radio frequency (RF) spectrum , which is divided among ranges from very low frequencies (vlf) to extremely high frequencies (ehf). Each band has a defined upper and lower frequency limit.