Patent ID: 7649863

Claim:
Method for allocating radio resources for the establishment of an outgoing call originating from a mobile terminal of a first system for radiocommunications with mobiles having a given radio interface and a mutual help channel, via a base station of a second system for radiocommunications with mobiles, said second system being distinct from said first system, and said first and second systems comprising respective terminals and base stations and having respective radio interface which are mutually incompatible, wherein a given pattern is transmitted periodically by the mobile terminal on the mutual help channel with a first periodicity; and, wherein the base station carries out the steps of: a) periodically monitoring said mutual help channel of the first system with a control logical channel having timeslots with a second periodicity which is not proportional to said first periodicity, while taking into account the characteristics of the radio interface of the first system; and b) in case of detection, by the base station, of the given pattern transmitted by the mobile terminal on said mutual help channel, allocating a traffic channel emulating the radio interface of the first system, for communication with the mobile terminal.