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.
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
2.3/2.4GHz
Node access capability
32
8
6.5W
About 20W
8000
Network topology
Star/Relays/Mesh
Mesh
Star
Star/Mesh
power waste
higher
Lower
low
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
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℃
RX：147mA@3.3V 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
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
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
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
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
800Kbps (14 channels 5.14Mbps)
