Patent ID: 6529493
Filing Date: 2003-03-04
Classification: G01S,H04B,H04W

Abstract:
A mobile station of a digital cellular communications system, the station being of a type comprising:means for transmitting and receiving telecommunications signals by radio in time division multiple access mode; means for receiving positioning signals transmitted by a positioning system; and processor means for processing both said telecommunications signals and said positioning signals; wherein said processor means is continuously connected to said means for transmitting and receiving telecommunications signals and to said means for receiving positioning signals, said processor means extracting positioning data from said positioning signals that are received when said telecommunications signals are not being transmitted and are not being received, without switching between said means for transmitting and receiving telecommunications signals and said means for receiving positioning signals, and wherein the telecommunications signals are sent and received during time slots within a telecommunications signaling frame, and the positioning signals used are those received during the telecommunications signaling frame but outside of said time slots.