Cansec TA3220SSA-F IoT WiFi Module 17dBm Rf Transceiver Module
Brand Name:Cansec Wireless
Model Number:TA3220SSA-F
Minimum Order Quantity:100
Delivery Time:3~6 weeks
Payment Terms:T/T
Place of Origin:Beijing
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Wireless Rf Transceiver Wifi IoT Module Cansec TA3220SSA-F Ti CC3220 High Flash Capacity Wifi Rf Modul For Industry Automation
Wireless Rf Transceiver Wifi IoT Module Cansec TA3220SSA-F Ti
CC3220 High Flash Capacity Wifi Rf Modul For Industry Automation
1. TA3220S Module is designed based on TI’s CC3220S which is part of
the SimpleLink™ microcontroller (MCU) platform, which share a
common, easy-to-use development environment with a single core
software development kit (SDK) and rich tool set. A one-time integration of the SimpleLink platform enables you to
add any combination of the portfolio’s devices into your design,
allowing 100 per cent code reuse when your design requirements
change. For more information, visit Overview for SimpleLink™
solutions.
2. Start your Internet-of-Things (IoT) design with a Wi-Fi® CERTIFIED®
single-chip MCU System-on-Chip(SoC) with built-in Wi-Fi
connectivity. Created for the IoT, the SimpleLink™ CC3220x device
family from Texas Instruments™ is a single-chip solution,
integrating two physically separated, on-chip MCUs. • An application processor – ARM®
Cortex®-M4 MCU with a user-dedicated 256KB of RAM, and an optional
1MB of XIP flash. • A network processor MCU to run all Wi-Fi and
Internet logical layers. This ROM-based subsystem includes an
802.11b/g/n radio, baseband, and MAC with a powerful crypto engine
for fast, secure internet connections with 256-bit encryption.
3. The CC3220x wireless MCU family is part of the second generation of
TI’s Internet-on-a-chip™ family of solutions. This generation
introduces new features and capabilities that further simplify the
connectivity of things to the Internet. The new capabilities
including the following:
• Enhanced Wi-Fi provisioning • Enhanced power consumption
• Enhanced file system security (supported only by the CC3220S and CC3220SF devices) Wi-Fi AP connection with up to four stations • More concurrently opened BSD sockets; up to 16 BSD sockets, of which 6 are secure
• HTTPS support
• RESTful API support
• Enhanced file system security (supported only by the CC3220S and CC3220SF devices) Wi-Fi AP connection with up to four stations • More concurrently opened BSD sockets; up to 16 BSD sockets, of which 6 are secure
• HTTPS support
• RESTful API support
• Asymmetric keys crypto library
• The CC3220x wireless MCU family supports the following modes:
station, AP, and Wi-Fi Direct®. The device also supports WPA2
personal and enterprise security. This subsystem includes embedded
TCP/IP and TLS/SSL stacks, HTTP server, and multiple Internet
protocols. The device supports a variety of Wi-Fi provisioning
methods including HTTP based on AP mode, SmartConfig™ Technology,
and WPS2.0.
• The power-management subsystem includes integrated DC-DC
converters that support a wide range of supply voltages. This
subsystem enables low-power consumption modes for extended battery
life, such as low-power deep sleep, hibernate with RTC (consuming
only 4.5 μA), and shutdown mode (consuming only 1 μA).
• The device includes a wide variety of peripherals, including a
fast parallel camera interface, I2S, SD, UART, SPI, I2C, and
4-channel ADC.
FAQ
Q1: Are you a factory or trade company?
A1: We are a professional factory with 25 years experience.
Q2: Can you accept OEM/ODM?
A2: Sure, we have rich OEM&ODM experience.
Q3: Do you have quality assurance?
A3; Each of our products has undergone quality testing and has two
years of free after-sales service.
WLAN Roaming
DefinitionRoaming, or handover, also called wifi roaming represents the action that consists for a station to change access point (AP) without losing its network connectivity.
Level 2 (and 3) mechanism: see OSI model
802.11.f protocol in 2003
Applications
Many apps can bear to lose/recover internet connection but some must keep it
Examples: VoIP, streaming, ...
Classification
Roaming intra-ESS (Internal Roaming): the mobile goes from one AP to another AP within the same wireless network
Inter-ESS (External Roaming) roaming: the mobile moves in the WLAN of another wireless internet service provider or Wireless Internet Service Provider (WISP)
Association - disassociation
A station wishing to use the network must associate with the access point. Thanks to this association, the station is part of the access point's BSS. She can then, use the services of the access point. The attachment between the station and the access point is broken through disassociation.
Distribution
It’s this service that needles the wefts. It allows a station to send frames through the distribution system (DS) of a BSS or ESS.
Integration
The integration service allows the different access points to communicate by a channel other than 802.11, most often this is a local area network.
Performances
Roaming, although functional, is very slow, too much for Voice over IP (VoIP)
Slowness mainly due to the slowness of the authentication mechanism
The additional standards that were supposed to improve roaming were not completely finalized.
Lack of interest on the part of market players, both in free software and in proprietary software.
Failure of the 802.11f standard which was withdrawn in 2006 by the IEEE
Evolution of WiFi roaming
Evolution of the 802.11i standard (authentication by WAP2)
Proprietary solutions: obligation to choose a builder for roamer
In order to overcome the problem of roaming with VoIP, the IEEE is looking into the use of the GSM network associated with Wifi
Cansec TA3220SSA-F IoT WiFi Module 17dBm Rf Transceiver Module
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