Patent Number: 6,434,183

Title: Method and device for radio transmission of data by means of frequency hops

Abstract: According to the invention, a method and an arrangement is provided for digital radio transmission of data between a fixed station (1) and at least one mobile station (2, 3) at one of a plurality of carrier frequencies (f.sub.1, f.sub.2, etc.) the data being transmitted in time slots (Z1, Z2 etc.) using time-division multiplex method (TDMA) and, in particular if so-called slow hopping RF modules are used, the change from one carrier frequency to another carrier frequency requiring at least a time period corresponding to one time slot. According to the invention, the data are transmitted in two successive active time slots (Z1, Z2) which are followed by an inactive time slot, in which no data are transmitted. The transmission in two successive time slots (Z1, Z2) takes place at the same carrier frequency. If the method or the arrangement according to the invention are used for the purpose of matching the DECT standard to the US-American ISM band, six time slots for transmitting from the fixed station to at least one mobile station can be followed by six time slots for transmitting from the at least one mobile station (2, 3) to the fixed station (1).

Inventors: Kockmann; Juergen (Dusseldorf, DE), Sydon; Uwe (Dusseldorf, DE), Schliwa; Peter (Hamminkeln, DE), Mueller; Andreas (Rees, DE)

Assignee: Siemens Aktiengesellschaft

International Classification: H04B 7/26 (20060101); H04B 001/703 (); A61F 002/06 (); H04L 027/30 ()

Expiration Date: 08/13/2019