January 2018
Intermediate to advanced
524 pages
13h 33m
English
Content preview from Internet of Things for Architects
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4G-LTE spectrum allocation and bands
There are 55 LTE bands in existence, partly due to spectrum fragmentation and market strategies. The proliferation of LTE bands is also a manifestation of government allocation and the auctioning of frequency space. LTE is also split into two categories that are not compatible:
- Time Division Duplex (TDD): TDD uses a single frequency space for uplink and downlink data. The transmission direction is controlled via time slots.
- Frequency Division Duplex (FDD): In an FDD configuration, the base station (eNodeB) and the user equipment (UE) will open a pair of frequency spaces for uplink and downlink data. An example may be LTE band-13, which has an uplink range of 777 to 787 MHz and a downlink range of 746 ...
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