20 Feb 2006
We release the CoopMAC Driver V.2. The new version supports the whole functionality of CoopMAC, including the dynamic maintain and use of the CoopMAC table. Every station now selects the best helper when it transmits, based on this table. If there is not a good enough helper in the neighborhood, the source station transmits directly to the destination. You can download CoopMAC driver V.2 from the Downloads page.
The new version provides to the user the ability to define the coopMAC functionality of the wireless card from the command line, using the iwpriv command. The variables that can be defined using this command are the following:
- helper_enable (values: 0, 1)
Seting this variable you can enable or desible the funcionality of the helper in a wireless card. That means that a station can decide whether it is an avaliable helper ro not. - force_rates (values: 0, 1 )
When you set the variable equal to 0 the driver decides dynamicly about the transmission rates, based on the packet error rate. Setting the variable to 1, you can control the transmission rates, defining also the folloing variables: - first_hop_rate (values: 10, 20, 55, 110 )
You define the transmission rate when you are the transmitter and you transmit to the helper.
- second_hop_rate (values: 10, 20, 55, 110 )
You define the transmission rate when you are the helper and you transmit to the receiver. - single_hop_rate (values: 10, 20, 55, 110 )
You define the transmission rate when you are the transmitter, you are not able to find a good helper and thus you transmit directly to the receiver.
An examle of setting one of the previous variables from the command line is the following:
iwpriv wlan0 helper_enable 1
We also release a Documendation file that desribes in detail the modifications we did in the HostAP driver in order to support the CoopMAC functionality. You can also download this file from the Downloads page.
15 Oct 2006
We release the CoopMAC Driver V.1, based on the HostAP driver. This version supports the basic functionality of CoopMAC protocol. That means that a source station can use a helper to transmit. The decision about using a helper as well as the MAC address of that helper is defined manually. You can download CoopMAC driver V.1 from the Downloads page.
