Wifi, honeycomb network (2G, 3G, LTE), Bluetooth, these three technologies together can solve most use cases.
Mesh is to let each Bluetooth device use the Mesh Transport Layer (MTL) to relay messages repeatedly to extend the service range, and the Propagation Delay between nodes is less than 15 milliseconds (ms), more importantly These messages are protected by AES 128 Bit encryption.
Mesh is the focus of future development: Many analysts have stated that their customers need technologies like Mesh; many products are planned around the way of Mesh in terms of planning. From these two perspectives, Mesh is the focus of the future development of the Internet of Things.
If you leave these two perspectives aside, looking at the Mesh solution from a tech house can lead to a lot of interesting and cool application scenarios. You can think of adding a variety of devices to the Mesh network to become a network. A node inside, this network can be expanded and contracted at any time. When you increase the node, it expands, and when you leave, it shrinks. This kind of usage scenario, I think, can promote a lot of applications.
Security issues depend on the importance that each user attaches to personal data. Of course, in the context of IoT, security is a very important thing. There are some related practices in Mesh networks. For example, a manufacturer of a Bluetooth device designed a Bluetooth-equipped pencil, microphone, or paper clip. As a manufacturer, you can choose the security level of this thing yourself. There can be no security measures at all, or you can make this product. Government-grade specifications, this is the manufacturer’s choice.
But the situation of Mesh is different. Every node that joins the Mesh network must meet our security standards. It must pass our security test. The security defense mechanism is for the working group or the Bluetooth Technology Alliance. It is a very important thing. Manufacturers must understand this and must consider the product’s security mechanism when planning.
At present, it seems that the promotion of Bluetooth technology in smart homes is a big driving force, but it seems not so big, mainly because the smart home’s things are too scattered, such as the lamp cannot communicate with the mobile phone, the air conditioner, and the door. Communication, the problem that devices in the smart home cannot be communicated with each other can be solved through Bluetooth, and the devices can form a very good interoperability. And by visiting actual consumers, they all want to be able to control all products through their mobile phones, and do not want to go to a certain system. So smart home is a very important part of promoting Bluetooth, but how specific is his contribution? It is really impossible to specify.
In fact, all manufacturers are pursuing a single operating system. I personally think that this situation will not happen. Different companies and units want to have sufficient control over their products, but such types as wifi and Bluetooth Standards help interoperability of different IoT devices. But Bluetooth is not a panacea for all problems. The idea is not so naive, but Bluetooth can provide some help, such as TDS (Transport Discovery Service). Such a service can help identify between different devices, so Bluetooth Technology can help smooth communication between the Internet of Things.
Wifi has a relatively large bandwidth and good speed, but Bluetooth does not regard Wifi as a competitor, but a complementary partner. Bluetooth focuses more on low power consumption and range. In the Internet of Things, the purpose of Bluetooth is to build a ubiquitous, low-power network, rather than emphasizing high-speed parts.