Patent ID: 6359924
Filing Date: 2002-03-19
Classification: H04B,H04W

Abstract:
Wireless telecommunications system (CTS) with at least one base station (BS) and with mobile user terminals (M1, M2) that exchange radio signals with at least one base station (BS) over a signaling channel within a time grid (MF) divided into time slots (FN) and, accordingly, over a prestorable frequency hopping sequence in varying frequency slots, characterized in thatthe minimum of one base station (BS) and the user terminals (M1, M2) contain controlling devices (CTR) for controlling the frequency slot alternations that produce no frequency hopping sequence for an initial portion of the time grid (MF), but rather emit a steady frequency (f0) and that produce, for at least one further part of the time grid (MF), a pseudorandom frequency hopping sequence (THS) according to an iterative process, and the base station (BS) sends an input value (CW) to the user terminals (M1, M2), and the controlling device (CTR) (M1, M2) computes the input pseudorandom frequency hopping sequence (THS) by means of the input value (CW) and the controlling device (CTR) controls the frequency change in accordance with this pseudorandom frequency hopping sequence (THS) for registering the user terminals (M1, M2).