AU542562B2 - Mobile radio network - Google Patents

Abstract

1. A mobile radio network having a number of radio concentrators (FUKOs) which are arranged side by side in the manner of a cellular system with overlapping radio ranges (1, 2 ... 7), wherein a firmly predetermined number of directly adjacent radio ranges forms a radio range group (FBG), all the frequency channels available being repeated in each group, and wherein furthermore the frequency distribution plan for the radio concentrators (FUKOs) is so determined that common channel interference in the respective radio range including an extended edge zone are largely eliminated, and wherein at least the signalling is carried out in digital form between the stationary radio concentrators (FUKOs) and the moving subscriber stations by means of organization channels designed for duplex operation, and wherein furthermore in the organization channel, in each connection establishment, the respective subscriber is assigned a radio channel in accordance with a scrambling programme and a quality check of the respective channel, in respect of sufficient signal-to-noise ratio, is effected in a signalling dialogue between subscriber and radio concentrator (FUKO), characterized in that, in the event of an unsuccessful result of the attempts to detect a channel having an adequate signal-to-noise ratio, a transit time measurement is carried out with the subscribers in order to locate their region of sojourn therefrom, and that, in the event of further unsuccessful connection attempts, interference entries for those channels which lie in the edge zone (R) of a radio range (1, 2 ... 7) are entered into the data processing unit of the radio concentrator (FUKO) and further allocations are so effected that subscribers in the core zone (K) of a radio range (1, 2 ... 7) are assigned such channels of the edge zones (R), and those of the edge zones (R) are assigned such channels which have originally been allocated to the core zone (K).