No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

S12700 V200R010C00 Configuration Guide - WLAN-AC

This document describes native AC (hereinafter referred to as WLAN AC) configuration procedures and provides configuration examples.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Understanding IoT APs

Understanding IoT APs

Concepts

Figure 20-1 shows the architecture of a network where an IoT AP works.

Figure 20-1  Architecture of a network where an IoT AP works

Components in the figure and related concepts are described as follows:

  • IoT STA: a terminal used to collect information, for example, RFID tags on persons or objects.
  • IoT card: a module integrating IoT functions. It is used to obtain data from air interfaces and report the data to the AP through serial communication.
  • AP: a device used to report the data from the IoT card to the host computer and receive instructions from the host computer. An AP is directly connected to a host computer, and delivers the IoT card configuration to the host computer but not to an AC.
  • AC: a device used to manage APs and deliver configurations to them.
  • Host computer: an upper-layer server to APs. It is used to receive data from IoT cards and deliver configurations to the IoT cards. In practice, data receiving and configuration delivery may be implemented by the same or different host computers.
  • Trusted host computer: a client host whose IP address is within the trusted IP address range of the AP functioning as the server to receive data.
    • If a trusted host computer is configured, the AP checks whether a client IP address is in the list of trusted host computers. Only clients in the list can connect to the AP and send the IoT card configuration to the AP.
    • If no trusted host computer is configured, any hosts with reachable routes to the AP can connect to the AP and deliver configurations to the AP.

    A host computer can be configured as the trusted host computer, so that the same device receives data and delivers configurations.

  • Shared key: a parameter for encrypting packets exchanged between the AP and the host computer to improve data communication security.

Mechanism

An AP functions as a server or client to communicate with the host computer in bi-directional mode. When the AP reports data to the host computer, the AP functions as a client and the host computer functions as a server. When the AP receives data from the host computer, the AP functions as a server and the host computer functions as a client.

Figure 20-2 shows the communication mechanism.

Figure 20-2  Communication mechanism

  1. The IoT STA obtains and sends data related to a target object.
  2. The IoT card reports the collected data to the AP through serial communication.
  3. Based on framing parameters, the AP sends the collected packets to the host computer in UDP/TCP mode.
  4. The host computer parses the data content from the UDP/TCP packets and executes services accordingly.
  5. The host computer delivers instructions to the IoT card using UDP/TCP packets.
  6. The AP extracts the data content from the UDP/TCP packets, distinguishes the slot based on the destination port number, and sends the instructions to the IoT card through serial communication.
  7. The IoT card executes the instructions delivered by the host computer.
Translation
Download
Updated: 2019-08-21

Document ID: EDOC1000142094

Views: 139221

Downloads: 126

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next