public void sendWirelessPacket(WiFiPort wp, Packet p, int channel) throws LowLinkException{
		if(!wp.isUP() || !wp.isOn() || !(channel > 0 && channel < 16)) return;
		
		Enumeration e = wifiMedium.elements();
		while(e.hasMoreElements())
		{
			WiFiPort wfp = (WiFiPort)e.nextElement();
			if(wfp.isUP() && wfp.isOn() && wfp.getChannel() == channel && wfp.getUID() != wp.getUID()) 
				wfp.receivePacket(p);
		}
	}