TÜV SÜD helps base station manufacturers across the world with their NB-IoT implementation by testing the guard-band to ensure that devices can transmit simultaneously without interfering with each other. As the Radio Equipment Directive (RED) test standards have not yet been updated to cover NB-IoT guard-band operation, TÜV SÜD also provides Notified Body opinion service for the base stations and device manufacturers.
As RED test standards typically take six to 12 months to catch-up with IoT test requirements, this work has helped the manufacturers to achieve a significant market lead in terms of delivering a reliable NB-IoT network that can deliver within the guard-band to optimise the number of devices that can be connected at any one time. Innovations such as these will lead the world of IoT on the path to revolutionise intelligent device control, transforming everyday life for individuals, businesses and society.
NarrowBand IoT (NB-IoT)
NarrowBand IoT (NB-IoT) is a radio technology specifically designed for the IoT and has been standardised by the 3rd Generation Partnership Project (3GPP). Using a Low Power Wide Area Network (LPWAN), NB-IoT enables multiple devices and services to be connected using cellular bands.
NB-IoT is essentially a bolt-on to 4G (think of it as 4.5G), as technologies are developed to meet the needs of a new 5G network. Consequently, operators have defined roadmaps for supporting NB-IoT LTE connectivity in the future. There have been phased releases of the NB-IoT 3GPP specification, which is currently at Release 13 (LTE-Advanced Pro).
NB-IoT is used for indoor coverage, and is deployed in-band within the Long Term Evolution (LTE) spectrum, enabling a large number of devices to connect at low cost, while optimising battery life. LTE is a prevailing force in the licensed spectrum, with LTE services for IoT having been deployed by the majority of carriers, alongside the increased production of LTE chipsets.
3GPP agreed technology for LPWA deployment NB-IOT offers three deployment scenarios - guard band, in band and stand alone. This means that NB-IoT technology can use frequency resource blocks within a normal LTE carrier, or it has the capability to take advantage of the unused frequency within the guard-band. This is an unused part of the radio spectrum that sits between radio bands, which is usually left unused to prevent interference between devices.
Using the NB-IoT™ logo
The logo is designed for network operators, as well as device, module and chipset manufacturers, to market and promote NB-IoT technology and products. Developed by the GSMA NB-IoT Forum, anyone using NB-IoT technology (as detailed in the 3GPP specification) may use this logo.
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