Shulou(Shulou.com)06/01 Report--

At present, due to the lack of a common device interconnection standard for IoT devices, various companies in the market have formed alliances, including OIC supported by Intel, Samsung, Broadcom, AllSeen jointly promoted by Microsoft, Qualcomm and Electrolux, and Industrial Internet Association dominated by Intel, IBM, Cisco and GE. Apple and Google also form a school of their own, Google and ARM, Freescale constitute Thread Group.

Although different organizations are already working on the Internet of things standards, this is still an ongoing process. So at present, the Internet of things devices need to use the gateway as the central hub to enable other IoT devices to communicate with the external network.

What is the Internet of things gateway?

The Internet of things gateway can bridge different protocols of different devices. It is possible to connect IoT devices to the Internet. The Internet of things gateway can also summarize all the data, convert the protocol of the equipment, achieve wide-area interconnection, can also achieve local interconnection, and preprocess the data before sending it.

The main functions of the Internet of things gateway:

1. Protocol conversion capability

The protocol conversion from different perceptual network to access network, uniformly encapsulating the data in the standard format of the lower layer, and ensuring that the protocols of different perceptual network can be transformed into unified data and signaling; the data packets sent by the upper layer are parsed into signaling and control instructions that can be recognized by the sensing layer protocol.

2. Manageability

First of all, it is necessary to manage the gateway, such as registration management, rights management, status supervision and so on. The gateway implements the management of nodes in the subnet, such as obtaining node identification, status, attributes, energy, etc., as well as remote wake-up, control, diagnosis, upgrade and maintenance. Due to the different technical standards of the subnet and the complexity of the protocol, the gateway has different administrative capabilities.

3. Extensive access capability

At present, there are many technical standards for short-range communication, and now the standardization work for the Internet of things gateway has been carried out at home and abroad, such as 3GPP, sensor working group, to achieve the interconnection of various communication technology standards.

What are the benefits of using IoT gateways?

1. Edge computing shortens response time.

The accounting edge computing gateway TG452 provides edge computing function. When the Internet of things gateway is used at the edge, it will collect a large amount of data generated by the IoT sensor. If all the data is transmitted directly without processing, it will cause great delay to the communication. In order to reduce the mass transmission of this kind of data, the edge computing function of the Internet of things gateway can filter unnecessary data first and transmit useful data, so as to reduce the pressure of transmission.

two。 The Internet of things gateway provides security for data.

The Internet of things gateway can filter external access to prevent external data from communicating directly with other devices, thus increasing the security of the system.

3. The Internet of things gateway can convert protocols.

As IoT devices have a variety of protocols, each protocol can not communicate directly, which greatly hinders the development of the Internet of things industry. The Internet of things gateway can convert the protocols of different devices into the required protocols for data transmission.

If there is no Internet of things gateway, the networking of IoT devices will be a great problem, and the Internet of things gateway has become a bridge for IoT devices to communicate. At the same time, the Internet of things gateway also provides great help for server decompression and system security.

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