A method of transmitting signals from a plurality of first stations to the same second station, said method comprising the steps of transmitting first signals comprising a first communication and first associated information from one of said plurality of first stations to said second station; transmitting second signals comprising said first communication, a second communication and second associated information, said second associated information differing at least partially from said first associated information, from another of said plurality of first stations to said second station; and receiving at said second station said first and second signals, wherein said second station processes said first and second signals in accordance with the first and second associated information.