Casio IT-800 Series, Руководство пользователя программного обеспечения

Страница: 122 / 325

122
2.9.4 Zeroconfig
This feature coordinates with the module firmware and the WLAN driver to perform some of the
WLAN link management and the Network management.
•
If multiple SSIDs are registered as prioritized connections, attempt to establish connection
will be performed to each registered SSID. In this case, the interval of time period for
reconnecting will become prolonged. If the reconnection time ranks important, register one
SSID only as prioritized connection.
•
Reconnection loop process will initiate when a disconnection notification is issued by the
module, or when Association fails.
•
The reconnection loop process will end when the terminal succeeds connection establishment
with one of the multiple SSIDs registered as prioritized connections.
Connection Process
Zeroconfig will instruct the WLAN driver and the WLAN module to make connection when
finding an Access-Point registered in the prioritized SSID list. Each firmware of the driver and the
module both instructed initiates necessary process following the rule of IEEE802.11 b/g standard
to make connection with the Access-Point. If multiple SSIDs are registered as prioritized
connections in the prioritized SSID list, attempt to establish connection with each SSID will be
made.
Disconnection Process
In the following cases 1 to 3, the connection establishment via WLAN with Access-Point will be
disconnected. Firmware in the WLAN module judges on the disconnection and carries out the
necessary roaming process.
1. When the radio wave quality in air deteriorates because of interference from other radio
devices, noise, WLAN communication in the same channel with other WLAN device, or in
adjacent channel.
2. When the terminal distances from Access-Point, or when radio wave weakens due to obstacle.
3. When another Access-Point that can allow roaming to avoid the poor conditions described in
the situations 1 and 2 above cannot be sought.
Resume Process
The following processes are carried out when the terminal takes place in the resume mode.
- Unloading the driver
- Loading the driver
- Initializing
- Seeking Access-Point
- Creating the Access-Point list
- Establishing connection with Access-Point
- Changing the Tasktray icon