Talking about IoT and 5G

Jacktang

Talking about IoT and 5G [Copy link]

IoT, 5G, and NB-IoT are the most popular communication terms nowadays. With the maturity of 5G, "intelligent interconnection of all things" is becoming a reality, and the Internet of Things has been pushed to the forefront. In this class, let us first understand what these commonly used terms are. Without further ado, here are the dry goods. 1 The Internet of Things and 5G cannot be equated IoT (Internet of things) is an extension of the Internet. The user end is extended from people to all things, with the purpose of realizing the intelligent interconnection of all things; 5G (The 5th Generation mobile communication technology) is the "fifth generation mobile communication technology standard", which is a communication standard; 5G is one of the means to support wireless communication capabilities in the Internet of Things. 5G is to the Internet of Things what 4G is to the Internet. 2 The relationship between NB-IoT and 5G NB-IoT (NarrowBand Internet of Things) has the characteristics of large connection (50,000 connections in a single cell), low power consumption (current consumption in PSM state is at the uA level), low cost (NB chip target is less than US$1), and wide coverage (100 times that of 2G coverage), which are consistent with the mMTC application scenario of 5G. Therefore, it was included as one of the 5G standards by 3GPP. At the same time, NB-IoT also makes up for some application requirements of the Internet of Things that were not completed before the 5G standard. 3 The relationship between NB-IoT and LTE The NB-IoT protocol is derived from LTE. In order to adapt to the actual application needs of the Internet of Things, the signaling and functions are simplified on the basis of LTE, and improvements are made in terms of the number of connections and low power consumption. The use of 180KHz frequency is also to ensure compatibility with the LTE system as much as possible during deployment, to achieve smooth upgrades, and thus reduce deployment costs. 4 What kind of capabilities does the Internet of Things require for wireless communication? There are many application scenarios for the Internet of Things, and different application scenarios have different requirements. For example, smart meter reading requires low power consumption, autonomous driving requires low latency, VR/AR requires large traffic, smart manhole covers require deep coverage, etc. It is difficult to meet all these conditions at the same time and some requirements are contradictory. Therefore, the 5G standard has formulated three application directions, namely eMBB (enhanced mobility), mMTC (massive machine type communications), and uRLLC (ultra-reliable and low latency) to adapt to different application scenarios. 5 Are there other technologies used in IoT wireless communication? Currently, IoT wireless communication technologies are divided into two categories: one is licensed frequency communication technology, including NB-IoT and GPRS, and the other is unlicensed frequency communication technology, including WIFI, BlueTooth, ZigBee, LoRa, and NFC. Each has its own advantages and disadvantages and complements each other.