USR-WIFI232-A/B/C User Manual
http://www.usriot.com
Jinan USR IOT Technology Limited
Page 30 of 93
Figure 22
USR-WIFI232-A/B/C
USR-WIFI232-A/B/C
USR-WIFI232-A/B/C
USR-WIFI232-A/B/C Functional
Functional
Functional
Functional Architecture
Architecture
Architecture
Architecture
Notes:
Notes:
Notes:
Notes:
AP:
AP:
AP:
AP:
that is the wireless Access Point, the founder of a wireless network and the center of the
network nodes. The wireless router we use at home or in office may be an AP.
STA:
STA:
STA:
STA:
short for Station, each terminal connects to a wireless network (such as laptops, PDA and
other networking devices) can be called with a STA device.
4.3.1
STA
Infrastructure: it’s also called basic network. It built by AP and many STAs which join in.
The characters of network of this type are that AP is the center, and all communication between
STAs is transmitted through the AP. The figure following shows such type of networking.
A P
U S R - W I F I 2 3 2 -
A / B / C
U S R - W I F I 2 3 2 -
A / B / C
U S R - W I F I 2 3 2 -
A / B / C
U A R T
U s e r D e v i c e
Figure 23
USR-WIFI232-A/B/C
USR-WIFI232-A/B/C
USR-WIFI232-A/B/C
USR-WIFI232-A/B/C Basic
Basic
Basic
Basic Wireless
Wireless
Wireless
Wireless Network
Network
Network
Network Structure
Structure
Structure
Structure
4.3.2
AP
Because USR-WIFI232-A/B/C can be set to AP, can also be set to STA, so the USR-WIFI232-
A/B/C can be achieved easily wireless ad hoc network.
As showing in the figure below, USR-WIFI232-A/B/C (1) can be treat as an AP, and USR-
WIFI232-A/B/C (2), USR-WIFI232-A/B/C (3) and the laptop are STAs connected to USR-
WIFI232-A/B/C (1). Meanwhile, all USR-WIFI232-A/B/C modules can connected to user device
via UART interface. All USR-WIFI232-A/B/C modules can be operated and managed through the
laptop. So it is convenient to O&M all USR-WIFI232-A/B/C modules. Moreover, in such Adhoc
network structure, the whole coverage of a wireless network can be extended easily.
