3 | NB-IoT, LTE-M stay hitched to LTE waveform (簡訳:NB-IoT、LTE-MはLTE波形に接続されたまま) | --- | |
FierceWireless: Wireless | 2020-09-24 07:00 | ????0? | |
Looking at the Release 15 standard, and even Release 16, “those [NB-IoT/LTE-M] applications are enhanced, but they’re enhanced on the LTE waveform, not the NR waveform,” explained AT&T VP of Mobility and Access Architecture Gordon Mansfield, and that isn’t likely to migrate or be suggested before Release 17.That’s not to say sticking with LTE is a negative, and Mansfield explained why it makes sense. The applications for NB-IoT and LTE-M differ, but both are low-power technologies that require little bandwidth. Efficiency enhancements from NR really come into play in high-bandwidth situations. Since those IoT devices use basic connectivity, there’s nothing new NR introduces that would provide incremental benefit.From a standards perspective for LTE-M and NB-IoT, AT&T doesn’t see anything in the next three to five years that would drive a change in the radio interface, according to Mansfield, pointing to the timeline when Release 17 capabilities are likely to be introduced into the network. It does change in terms of core processing and what can be done with that data, he said, as standards support connecting NB-IoT and LTE-M devices to standalone (SA) 5G core networks.Sunsetting existing LTE-based technologies for IoT could be a nightmare both for operators and for users, Gus Vos, chief scientist at Sierra Wireless, told Fierce in an earlier interview. That’s because most of these low-power IoT devices are built for long life cycles. Vos called out examples like smart metering for water or gas, and smart city applications for infrastructure and monitoring.One of the often talked about benefits of 5G NR is ultra-low latency. However, with low-bandwidth IoT applications, latency isn’t a major factor. For NB-IoT for example, devices usually don’t need to connect in milliseconds, which is how the battery life is extended for long periods because they don’t need to constantly check in with the network, Mansfield noted. -- ???????? | |||
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