Protocol for communication between access ports and wireless switches
A wireless local area network includes access ports which communicate over a wired network with wireless switches which control the access ports and bridge data between portals in the access ports and another network. Code for operating the access ports and for configuring the portals is separately downloaded from the wireless switch. Where an access port includes more than one portal, separate ethernet addresses are assigned to the processor of the access port and to the portals for communications with the wireless switch. The protocol may provide separate sequence numbers for the communications and include a command field.
1. In a wireless local area network comprising a wireless switch which controls the operation of an access port coupled to the wireless switch and which manages data communications with the access port, wherein said access port comprises at least two radio portals each wirelessly communicating data to other mobile unit devices, a method for configuring one of the radio portals of said access port, the method comprising:
downloading software from said wireless switch to said access port for operation of said access port;
signaling data from said access port which identifies one of the radio portals of said access port; and
downloading data from said wireless switch to said access port to configure the identified radio portal of said access port.
2. In a wireless local area network comprising a wireless switch which controls the operation of an access port comprising at least two radio portals each communicating data to other devices, a method for selecting a channel of operation for a selected one of said radio portals, the method comprising:
sequentially monitoring each of a plurality of possible channels using said selected radio portal to detect beacon signals on said possible channels;
forwarding received beacon signals to a wireless switch controlling operation of said access port having said radio portal;
analyzing said received beacon signals using said wireless switch to select a channel for operation of said selected radio portal; and
sending a configuration message from said wireless switch to said selected radio portal to configure said selected radio portal to operate on said selected channel.
3. A method as specified in claim 2 wherein said wireless switch sends a control message to said access port designating said possible channels.
4. A method as specified in claim 2 wherein said access ports send signal strength data to said wireless switch with said received beacon signals.
5. A method as specified in claim 4 wherein said access port sends said received beacon signals to said wireless switch using a signal format identifying a channel on which said beacon signal was received.