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The communication speed and range may vary depending on the following conditions:
Distance between devices
Existence of obstacles between devices
Device configuration
Radio conditions
Ambient environment (including wall material, etc.)
Apps in use
Communications may be cut off depending on radio conditions.
The data transfer rate specified in the specification is the theoretical maximum, and may not
reflect actual data transfer rate.
Actual communication speed may not be as fast as the one displayed on your VAIO
computer.
The 2.4 GHz and 5 GHz Wi-Fi frequency bands are not communicable with one another.
The data transfer rate of IEEE 802.11g and IEEE 802.11n (2.4 GHz) may be affected by
interference when used with an IEEE 802.11b product. Also, IEEE 802.11g and IEEE 802.11n
automatically lower the transfer rate to maintain compatibility with an IEEE 802.11b product.
The transfer rate may be regained by changing the channel settings of your access point.
To stop the Wi-Fi function abruptly, turn off your VAIO computer and the wireless devices (if
any).
The WLAN standard includes the encryption methods: Wired Equivalent Privacy (WEP), which
is a security protocol, Wi-Fi Protected Access 2 (WPA2), and Wi-Fi Protected Access (WPA).
Proposed jointly by the IEEE and Wi-Fi Alliance, both WPA2 and WPA are specifications of
standards based on interoperable security enhancements that increase the level of data
protection and access control for existing Wi-Fi networks. WPA is designed to be forward
compatible with the IEEE 802.11i specification. It utilizes the enhanced data encryption
Temporal Key Integrity Protocol (TKIP) in addition to user authentication using 802.1X and
Extensible Authentication Protocol (EAP). Data encryption protects the vulnerable wireless
link between clients and access points. Besides that, there are other typical LAN security
mechanisms to ensure privacy, such as: password protection, end-to-end encryption, virtual
private networks, and authentication. WPA2, the second generation of WPA, provides
stronger data protection and network access control and is also designed to secure all
versions of 802.11 devices, including 802.11b, 802.11a, 802.11g, 802.11n, and 802.11ac
(draft) standards, multi-band and multi-mode. In addition, based on the ratified IEEE 802.11i
standard, WPA2 provides government grade security by implementing the National Institute
of Standards and Technology (NIST) FIPS 140-2 compliant AES encryption algorithm and
802.1X-based authentication. WPA2 is backward compatible with WPA.
Stopping Wi-Fi(R) (Wireless LAN) Communications
You can stop Wi-Fi communications by following these steps.
1. Open the charms and select the Settings charm. (See Opening the Charms to open the
charms.)