Dual access wireless LAN system
AssigneeCompaq Information Technologies Group, L.P.
InventorRabah S. Hamdi
Life of this patent
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Abstract
A wireless local area network (LAN) includes various devices, both hard-wired devices and wireless devices that allow communications between the devices and possibly to other devices in other networks, such as private computer networks and the Internet. The present invention allows wireless devices to sense and access various types of wireless networks, including IEEE 802.11a, 802.11b and 802.11g networks. Access to the wireless networks can be made with or without user intervention. The present invention provides an efficient and versatile means for wireless devices to communicate with other devices in a network.
Claims35
A communication system;
- comprising:
- a server coupled to a router;
- the router is coupled to a computer network via a modem;
- an access point that operates in a single mode and is also coupled to the router;
- and
- a wireless mobile device that operates in a plurality of modes, one of the plurality of modes is the single mode, whereby the wireless mobile device communicates with the computer network via the access point.
A wireless mobile device comprising:
- a processor coupled to a bus;
- a plurality of modems coupled to said processor, each modem operates in one of a pre-defined plurality of wireless mode;
- and
- an RF transmitter/receiver coupled to the modem for transmitting and receiving data.
A method for operating in a plurality of wireless access modes, comprising the steps of:
- detecting a signal;
- determining whether the signal is centered at a first frequency band or a second frequency band;
- setting up a transmitter/receiver in one of the plurality of wireless access modes based on whether the signal is centered at the first frequency band or the second frequency band;
- and
- setting up a modem to operate in one of the plurality of wireless access modes.
A method for operating in a plurality of wireless access modes, comprising the steps of:
- placing a device in a low power state;
- detecting a signal;
- determining whether the signal is centered at a first frequency band or a second frequency band;
- placing the device in an active state if the signal is centered at the first frequency bank of the second frequency band, otherwise keeping the device in the low power state;
- setting up a transmitter/receiver in one of the plurality of wireless access modes based on whether the signal is centered at the first frequency band or the second frequency band;
- and
- setting up a modem to operate in one of the plurality of wireless access modes.
A communication system;
- comprising:
- a server coupled to a router;
- the router is coupled to a computer network via a modem;
- an access point that operates in a plurality of modes and is also coupled to the router, one of the plurality of modes is a single mode;
- and
- a wireless mobile device that operates in the single mode, whereby the wireless mobile device communicates with the computer network via the access point.
Dependencies are inferred from the claim text.