Process for monitoring analog and digital mobile radio connections

In a process for monitoring analog and digital mobile radio connections in a mobile radio network comprising a plurality of mobile radio subscriber stations and a plurality of base stations which are mutually spaced in a cellular arrangement having rigidly prescribed overlapping radio ranges which are directly adjacent one another as radio range groups in which the total number of available frequency channels is repeated, in which the frequency distribution plan for the base stations is designed such that common channel disturbances in a radio range, including an extended boundary zone of the overlapping, are substantially eliminated, in which at least the signaling in digital form between the base stations and the mobile subscriber stations is carried out over duplex time-division multiplex organization channels, in which radio range related information blocks are time compressed for transmission, and in which the time-compressed information blocks are expanded to obtain useful information, the improvement therein comprising the steps of:

• time compressing analog radio range related information blocks which are to be transmitted as useful signals in specific time slots to produce gaps between the information blocks including delaying the compressed information blocks;
• inserting data block sequences into the gaps, containing monitoring signals including subscriber identification, the signal-to-noise ratio of the connection and subscriber and network internal signals;
• transmitting the composite signals so formed to a receiver and receiving the same;
• extracting the data block sequences from the received composite signals;
• and
• then expanding the time-compressed information blocks to their original lengths to obtain the useful information.