초록 ▼

A system for distributed control in wireless cellular and personal communication systems includes separate servers for performing call control and connection control functions, thereby obviating the need for a mobile switching or other switch to be anchored for the duration of a call. During a regis

A system for distributed control in wireless cellular and personal communication systems includes separate servers for performing call control and connection control functions, thereby obviating the need for a mobile switching or other switch to be anchored for the duration of a call. During a registration procedure, visiting location servers track only roaming mobiles, rather than tracking both roaming mobiles as well as mobiles located in their home network. Direct signalling links between servers and base stations, or other servers, located in different networks allow roaming mobiles to contact their home networks for service at all times, thereby obviating the need for passing signalling information for mobiles when they are not involved in a call. The use of multicast signalling with asynchronous transfer mode switches, permits specified channel control functions to take place concurrently in channel servers associated with base station and switches that form a segment of the route for a call. Similarly, specified call control functions are performed concurrently with mobile location functions, thereby decreasing the delays in setting up a call.

대표청구항 ▼

A cluster-based multi-network distributed control telecommunication system comprising: a plurality of networks at least one of which is a home network which comprises: (a) a home location server for tracking the location of an assigned set of mobile users; (b) a visitor location server for tracking

A cluster-based multi-network distributed control telecommunication system comprising: a plurality of networks at least one of which is a home network which comprises: (a) a home location server for tracking the location of an assigned set of mobile users; (b) a visitor location server for tracking the location of each visiting mobile; (c) a roamer call server for handing calls for users of said home network who are roaming or visiting another network thereby obviating the need for sharing competitive information; and (d) a plurality of clusters for connecting calls from a plurality of end systems where at least one of said plurality of clusters comprises: (1) a call server; (2) a connection server; (3) a plurality of base stations each having a channel server associated with it; (4) a plurality of switches where each of said plurality of switches has a channel server associated with it; and (5) a plurality of signalling transfer points; and the plurality of end systems, including a plurality of mobiles belonging to users of the home network, at least one of said mobiles being a roaming mobile which is located in a network other than its home network.