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NTT Docomo's Disaster Countermeasures to Keep People Connected

Recently I blogged about Disaster Roaming in 3GPP Release-17. While this will take time to be implemented worldwide, it is already available in Japan, maybe not in the 3GPP standardised way. Similarly, back in 2011, I blogged about Earthquake and Tsunami Warning service (ETWS) from NTT Docomo's Journal, it was two days before the  2011 Tōhoku earthquake and tsunami hit. Japan is no stranger to earthquakes, typhoons, and other natural disasters, which can have a devastating effect on infrastructure. To ensure that the mobile networks keep functioning, operators work extremely hard to ensure people remain connected one way or another. NTT Docomo has released a video detailing the countermeasures to keep everyone connected in case of emergencies. The following detail is provided with the video: DOCOMO's network is no exception, and our services could get cut off by a base station power outage, disconnected fiber-optic cable, or other malfunctions. DOCOMO established the three pr
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Direct-to-Mobile Communications Using LEO Satellites gets a Step Closer

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Top Posts of 2022

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Shared Neutral Host RAN Solution in India to Unlock 5x QoE Improvement

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Would NR-Light (RedCap) succeed LTE Cat-1bis and Cat-4 for Internet of Things Devices?

LTE UE Categories were a popular topic once upon a time. I have various blog posts on the topic, the earliest one being in 2009 , then in 2011 and 2015 . Most of the smartphones started with Category 3 (Cat-3), going on to Cat-6, Cat-9, etc. Cat-2 was never used as far as I know. Cat-1 and Cat-4 gained popularity in various IoT applications. The picture above from this press release , nicely summarises the evolution of various 3GPP technologies, including IoT. As you will notice, an updated version of LTE Cat-1 known as Cat-1bis was in 3GPP Release-13. You will also notice that LTE Cat-0 was introduced in Release-12 that evolved into eMTC or LTE-M (Cat-M1). A blog on Ericsson has a nice summary here . In Release-13, LTE Cat-1bis was introduced. This article explains what Cat-1bis is and how's it different from Cat-1: LTE Cat 1, sometimes also refers as 4G Cat 1, is specifically designed for more feature-rich Machine-to-Machine (M2M) IoT applications. The technology was initially

Microwave Backhaul Connects American Samoa

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