5G can be implemented in low-band, mid-band or high-band millimeter-wave 24 GHz up to 54 GHz. Low-band 5G uses a similar frequency range to 4G cellphones, 600–900 MHz, giving download speeds a little higher than 4G: 30–250 megabits per second (Mbit/s).
Each LTE band has a bandwidth of either 1.4, 3, 5, 10, 15, or 20 MHz, giving us a maximum bandwidth of 100 MHz with five combined. Although this will vary depending on the bandwidth available in your particular area.
The bands these phones come with are N41, N77 or N78 which operate only on low frequencies. Even the flagship devices support only Sub 6 GHz bands in India. For instance, OnePlus 9 Pro comes with N41 and N78 bands in India whereas OnePlus 9 Pro US variant supports 5G mmWave bands which are N258, N260 and N261.
The fourth generation of mobile phone standards LTE (Long Term Evolution), developed by the 3GPP ( 3rd Generation Partnership Project), offers an up to seven times faster upload speed with upload speeds of up to 50mbps.
Bandwidth and Data RateNB-IoT uses a very narrow bandwidth (200 kHz), compared to Cat-M1 which uses 1.4 MHz. As a result the maximum data rate for NB-IoT is around 250 kb per second. Compared to Cat-M1 - up to 1 Mbps.
Bringing narrowband IoT to 5G networksNB-IoT is currently being brought into the 5G fold. In July, the International Telecommunication Union recognized 3GPP NB-IoT as an officially supported standard.
Narrowband IoT (NB-IoT) is a wireless internet of things (IoT) protocol using low-power wide area network (LPWAN) technology. It was developed by 3GPP for cellular wireless communication that enables a wide range of new NB-IoT devices and services. NB-IoT is one of the three main 3GPP LPWAN standards.
LoRa Weather StationThat project worked very well, but it was only one directional, using just one RX receiver and one TX transmitter. For this project, we are going to perform bi-directional communication, enabling both units to have the ability to transmit and receive data.
NB-IoT uses a subset of the LTE standard, but limits the bandwidth to a single narrow-band of 200kHz. It uses OFDM modulation for downlink communication and SC-FDMA for uplink communications.
The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile devices such as mobile phones and tablets.nb iot 4g