Abstract: Groupings of receivers for determining a target location by a multilateration system are selected to give the best geometric dilution of precision result by eliminating the receiver that makes the greatest contribution to such dilution. In this way the groups to be used may be selected as appropriate for the location of the target in real time, avoiding the requirement to have a database holding the groupings to be used.

Abstract: Groupings of receivers to be used for determining a target location by a multilateration system are selected to give the best Geometric Dilution of Precision result by eliminating that receiver that makes the greatest contribution. In this way the groups to be used may be selected as appropriate for the location of the target in real time avoiding the requirement to have a database holding the groupings to be used.

Abstract: According to the invention, a reduced set of transport format combinations is signalled to a subscriber station which has established a link to a second radio communication system in a second signalling channel of said second radio communication system. The transport format indicator is then selected from the reduced set of transport format combinations and used to initiate a link transfer to the first signalling channel of a first radio communication system. A full set of transport format combinations is subsequently signalled to the subscriber station in the first signalling channel.

Abstract: Network information is provided for a station that is adapted to exchange data via at least one interface for each of different communication networks. The station selects an interface or a network station for exchange of data based on the network information and carries out the data exchange via the selected interface or network station. Priorities are determined and allocated to the network information of network stations or communication networks which it can receive based on their signal strength.

Abstract: A reduced set of transport format combinations is signalled to a subscriber station which has established a link to a second radio communication system in a second signalling channel of the second radio communication system. The transport format indicator is then selected from the reduced set of transport format combinations and used to initiate a link transfer to the first signalling channel of a first radio communication system. A full set of transport format combinations is subsequently signalled to the subscriber station in the first signalling channel.

Abstract: According to the invention, a reduced set of transport format combinations is signalled to a subscriber station which has established a link to a second radio communication system in a second signalling channel of said second radio communication system. The transport format indicator is then selected from the reduced set of transport format combinations and used to initiate a link transfer to the first signalling channel of a first radio communication system. A full set of transport format combinations is subsequently signalled to the subscriber station in the first signalling channel.