Patent ID: 6490447
Filing Date: 2002-12-03
Classification: H04M,H04W

Abstract:
A GAP-specific DECT cordless telecommunications system with assured interoperability of cordless telecommunications applications, comprising:(a) a cordless base station having a quantity k of parallel telecommunications channels; (b) a quantity m1 of first cordless mobile parts capable of communication with the base station and which respond and react only to connectionless call messages; (c) a quantity m2 of second cordless mobile parts capable of communication with the base station and which respond and react only to connection-based call messages; (d) a quantity m3 of third cordless mobile parts capable of communication with the base station and which respond and react to both connection-based call messages and connectionless call messages, wherein m1+m2+m3=m total number of cordless mobile parts, and m is >k such that the total number of cordless mobile parts is greater than the number of parallel telecommunications channels; and (e) a controller in the base station for controlling connections between the base station and all of the total cordless mobile parts wherein the controller sends a number j connection based call messages and a number i connectionless call messages, such that: (1) m=m1+m2+m3, in which case m1, m3&gE;0 and m, m2&gE;1, wherein there may be at least zero first cordless mobile parts, there may be at least zero third cordless mobile parts, there is at least one second cordless mobile part, and there is at least one total cordless mobile parts; (2) m2&lE;kâˆ’1, in which case k&gE;2, wherein there are at least two channels in the base station; (3) j&lE;kâˆ’1, in which case k&gE;2, wherein the number of connection-based call messages sent by the controller is less than the number of channels such that at least one channel is reserved for connectionless call messages.