Table of Contents
Advertisement
www.ti.com
Topic
Wi-Fi
Wi-Fi connection with home access point, to
connectivity
allow internet access at any time
Traffic types
Reliable
Security
Data must be secured
Secure Wi-Fi password
Secure credentials
Secure user password of up layer (connected
to server)
Power
Connected to the power supply
management
User
Must be available on smartphone app at any
experience
time with no delay
Provisioning
Easy setup, without the need of technical
support
2.2.3 Wi-Fi Tag
2.2.3.1
Description
A tag is a tiny device which attaches to expensive assets (such as hospital medical equipment or
expensive lab equipment). The tag device occasionally transmits, without being connected to the local
network. The transmission allows the central equipment to find the device using a smart-signal algorithm.
A tag device can also connect to an AP occasionally to get software updates or send statistical
information.
2.2.3.2
Design Consideration
Topic
Wi-Fi connectivity
Traffic types
Security
Power management
User experience
Provisioning
SWRU455A – February 2017 – Revised March 2017
Submit Documentation Feedback
Table 2-2. Design Considerations for Power Socket Application
Consideration or Constraint
Table 2-3. Design Considerations for Tag Applications
Consideration or Constrain
Mostly transmitted without being
connected, occasionally connect AP for
SW updates
SW update must be reliable
Data must be secured:
Secure Wi-Fi password
Secure credentials
Secure user password of up layer
(connect to server)
Sensitive, battery powered
None
None
Copyright © 2017, Texas Instruments Incorporated
Recommendations
STA role
Configure profile with network name and password by the
provisioning process.
TCP, also data must be secured
Wi-Fi – profile and password are configured by the provisioning
process, the password is encrypted and cannot be accessed by
the application.
Data – encrypt and decrypt data by SSL
Credentials and server password – use SimpleLink secured-file
system
None
SimpleLink is always on, client TCP secured socket is always
connected to the server
The provisioning process allows for easy and fast wireless
network configuration (network name and password)
Recommendations
Regular: transceiver mode – not connected
SW update: STA role
Regular: Propriety data over Wi-Fi frame
SW updates: TCP with SSL
Regular: None
For SW update:
Wi-Fi – profile and password are configured during the
provisioning process. The password is encrypted and cannot
be accessed by the application
Data – encrypt and decrypt data using SSL
Credentials and server password – use the SimpleLink
secured-file system
Hibernate or shutdown mode, wakes up the SimpleLink when it
is time for tag transmitting or SW updates arrived, returns to
hibernate or shutdown quickly.
SW update:
Wi-Fi: profile with auto and fast policies
IP: Decrease the number of DNS requests, resolve once and
keep the address, only as a result of TCP connection failure,
resolve again
None
None
Basic Examples
25
Networking Application
Advertisement
Table of Contents
