LTE Band 32 operates in the upper portion of the 1.4 GHz spectrum and is specifically designated for Supplemental Downlink (SDL) use. Unlike traditional FDD bands, it does not have a paired uplink frequency, meaning it's used exclusively for downlink transmissions. The primary purpose of Band 32 is to enhance the capacity of existing networks by offering additional downlink bandwidth, which caters to modern mobile broadband services where downlink data demand often outweighs the uplink.
Being in the 1.4 GHz range, Band 32 strikes a balance between coverage and capacity, allowing for reasonably broad service areas while still maintaining respectable data speeds. It's a tool in the arsenal for operators aiming to efficiently manage network congestion in areas with high data demand.