FIELD: cellular telephone systems. SUBSTANCE: invention specifically refers to system raising reliability of cellular telephone system in surrounding media with many-pronged transmission of signals or under conditions of simultaneous attempt by great number of mobile telephone units trying to gain access to base station. Transmitters can be mobile stations and receiver can be base station in CDMA cellular telephone system. Each station employs one or more procedures of randomization for distribution of messages. With first randomization mobile station delays its transmission in time by number of unit elements of pseudocode with the aid of which transmitted signal is expanded. Noise function generates number unambiguously coupled to given mobile station from identification number. With second randomization mobile station selects pseudocode, with third randomization mobile station inserts random delay between sequential transmission of messages or tests if it does not receives acknowledgment after preset interruption period. Preset number of such transmissions is called sequence of tests. With fourth randomization mobile station inserts relatively long random delay between consistent sequences of tests if it does not receive acknowledgment of any test in sequence. Level of noise is diminished by way of minimization of power of transmission. Mobile station raises power of sequential tests within limits of each sequence of tests. First test in each sequence of tests is transmitted at specified level. EFFECT: diminished number of collisions between messages in communication system. 15 cl, 6 dwg
