With the rapid development of the Internet of Things, technicians are trying to use the new network architecture to handle the proliferation of data caused by the increase in the number of connected devices. One method is "mesh networking."
"Multi-hop networks" are constructed by nodes, including devices such as computers and mobile phones, all of which are wirelessly connected to each other and then can forward data to each other over the network. Data jumps from one node to another until it reaches its destination. Unless all nodes fail, data is always available, making this network topology reliable and scalable.
Although the basic tasks of the "multi-hop network" are consistent with the functions of the Internet, it is all about getting components to get data from the network. But currently implementing the Internet is much more expensive than "multi-hop networks."
Google developer Don Dodge said in an e-mail: "In the past 30 years, the Internet has evolved into a product with high speed, high bandwidth, huge payload (video, audio, etc.) and high quality service. The Internet has also become expensive, costing $40 or more per month. The Internet of Things contains billions of components that transmit some data every day or even every hour. Although the existing Internet can easily do this. Load, but it is also expensive."
“The 'multi-hop network' was originally developed for military use and later used in humanitarian projects to help communities that do not have access to the Internet. When the physical wires and cables that protect the Internet are compromised, the 'multi-hop network' It will also become crucial. Recently, the structure played a role in the protest march in Hong Kong. People involved in the parade downloaded an application called FireChat, which allows mobile phones to connect to each other to form a temporary Internet. The architecture has not been widely deployed, but the IT circle is now starting to be discussed intensely."
Dodge has been working with a variety of startups and companies to find ways to implement a “multi-hop networkâ€. One approach taken by Dodge is that "homebases" are used by people to transfer data through an application within the device.
Dodge added: "Laptops and smartphones act as repeaters for traffic, passing data to the Internet via any connection (Wi-Fi or mobile)."
Essentially, customers need to subscribe to an application and have their devices open to other components that transmit data.
Dodge said: "Sometimes, the data through your phone does not come from your component, but it doesn't matter, because the data is encrypted."
Dodge's startup found that 20 homebases created networks that span the entire San Francisco, indicating that 10,000 homebases can cover 80% of the US.
Because the Internet of Things—a network of embedded technologies that can communicate, transmit, and interact with the external environment—is becoming a reality and generating potentially huge data traffic loads, so interest in “multi-hop networks†is increasing. IT consulting firm Gartner predicts that by 2020, the number of connected objects in the Internet of Things will be close to 26 billion. This is almost 30 times the growth of the 900 million connected objects in 2009.
CIOs' views on "multi-hop networks"
Whether "multi-hop network" finds its place in the enterprise is another problem. According to Dodge, although "multi-hop networks" are efficient and inexpensive, the idea of ​​security, data transmission, and storage, a device-specific network has not been accepted and understood by everyone. Jonathan Reichental, chief information officer at Palo Alto, Calif., built a “multi-hop network†in an apartment building, and all residents in the apartment building agreed to use their laptops and other devices as nodes for storing and transferring data. .
Reichental said: "For example, you are on the bottom floor of an apartment building and want to send a message to a machine placed on the 25th floor of the apartment building. Your information will pass through all the computers on the road, but there is no monitoring management. This is very different from the network that the enterprise is using now. The routing of information in the enterprise, the quality of the information, the speed of information transmission and the security of the information are monitored and protected."
In the end, Reichental said, whether the "multi-hop network" is adopted by enterprises depends on what enterprises use to "multi-hop networks" and where they are deployed. For example, a CIO of a business enterprise in a bustling city in the United States may not use this technology because they have access to the Internet. If the Internet suddenly fails, "multi-hop network" may be deployed, but once the Internet is restored, "multi-hop network" will no longer be needed. On the other hand, for example, CIOs in rural areas may be interested in “multi-hop networksâ€; food production companies that have large amounts of land and need to obtain data from outside the land may also be interested in this technology. But even in this case, "multi-hop network" is a backup of the Internet and cannot replace the high-speed, manageable Internet.
Cynthia Nustad, chief information officer at Health Management Systems, also believes that it is still the beginning of the "multi-hop network."
Nustad wrote in an e-mail, "On a personal level, I have not seen this technology put into production. The concept of self-organizing and managing computers is interesting, and the potential use of 'multi-hop networks' is very broad. It’s not yet popular.â€
Google's Dodge also agreed. He said that this backup network for IoT transmission does not mean providing high quality services or high speed bandwidth. This is not a computer's "multi-hop network," which means connecting millions of components to the Internet. That's the point. This is why people who use the Internet for a long time do not recognize this technology.
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