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    1. CSW2201 Module

      CSW2201 Module

      The CSW2201 module wifi ultra-long-distance module focuses on the Internet of Things technology. Its innovative LR-WiFi technology (Long Range WiFi) solves the problem of low-cost, high-performance, high-speed, and long-distance wireless communication. Reshape the boundaries of WiFi transmission.

      LR-WiFi: The main technology comes from WiFi, which not only has the characteristics of WiFi easy to use, mature, and can be networked, but also solves the missing problem in WiFi: distance.

      LR-WiFi has a hundred times that of LoRa, zigbee and other narrow-band communications and a slightly lower rate than WiFi. It can also be compatible with WiFi through an external wireless network card. It can be widely used in wireless cameras, drones, smart buildings, smart agriculture, and wisdom. Fields such as factories, robots, stage and musical instruments.

      Comparison of LR-WIFI and other wireless methods

      2.png

      Comparison of LR-WIFI and other wireless methods

      parameter

      Traditional WiFi

      Bluetooth

      Zigbee

      LoRa WAN

      NB-IOT

      802.11ah (Halow)

      LR-WiFI

      transmission distance

      100m~400m

      15m~60m

      50m~300m

      300m~27Km

      <20Km

      <10Km

      ≤15Km

      transmission speed

      100~300Mbps

      1M/24Mbps

      250Kbps

      0.3~50Kbps

      20~127Kbps

      <10Mbps

      ≤40Mbps

      Operating frequency band

      2.4G /5GHz

      2.4GHz

      2.4G/Sub1GHz

      Sub 1GHz

      Licensed

      Sub 1GHz

      2.3/2.4GHz

      Node access capability

      32

      8

      6.5W

      6.5W

      About 20W

      8000

      32

      Network topology

      Star/Relays/Mesh

      Mesh

      Mesh

      Star

      Star

      Star

      Star/Mesh

      power waste

      higher

      Lower

      low

      Lower

      Lower

      Lower

      commonly

      Applicable scenario

      General family

      Office environment

      Proximity audio and control

      Smart home

      Low speed equipment

      Large scale low-speed networking

      Wide range low-speed direct network access

      Large range long-distance transmission

      Long distance high rate transmission

      Module introduction

      7.png

      The main parameters

      parameter

      index

      working frequency

      2.4GHz(ISM)

      throughput

      Adaptive, ≤ 40mbps

      High transmitting power

      20dBm

      Measured transmission distance

      3 ~ 5km (no ground to air interference, 2Mbps), 200 ~ 300m noisy ground environment in typical cities

      working temperature

      -20~70℃

      power waste

      RX:[email protected] TX: 220mA @3.3V

      Receiving sensitivity

      -94dBm (Min)

      delayed

      Typical value 4ms

      Package size

      12.9mm*12.2mm*1.75mm ( L*W * H)

      encryption

      WPA2 AES

      Network topology

      Point to point, point to multipoint, mesh

      Transmission technology

      OFDM TDD LR-WiFi

      diversity

      2x2MIMO,ML,MRC

      FEC

      LDPC

      Antenna interface

      IPEX x2

      Interface

      USB2.0

      CSW2201 and standard wifi ground throughput comparison

      The comparison data of throughput measured with RTL8188F on open ground at the same time is as follows

      Test condition 1: As shown in the figure, 2.5dB gain antenna

      8.png

      Test condition 2: As shown in the open ground environment, one end of the antenna is 1.8m high, and the other end is 1.5m

      9.png

      Test method: Use iperf to send UDP packets to the peer to measure throughput, and use 4 channels of 2427MHz frequency

      distance

      Throughput

      RTL8188F

      CSW2201

      250 meters

      2.45Mbps

      N/A

      500 meters

      800kbps

      9.6Mbps

      1000 meters

      Disconnect

      8.78Mbps

      1200 meters

      Disconnect

      800Kbps (14 channels 5.14Mbps)

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