FIELD: communications engineering. SUBSTANCE: in order to expand common link of pilot signals (PilotA) intended for transmission to particular mobile station in service area (sector A) to ensure transmission separation in direct communication line use is made of different orthogonal codes (Wx, Wy). Pilot signals transferred through antennas to common service area (sector A) are relatively orthogonal due to separate different orthogonal codes (Wx, Wy) used for each pilot signal so that they do not worsen system characteristics. In addition use of different orthogonal codes (Wx, Wy) for each pilot-signal (PilotA) channel enables mobile station to recognize pilot-signal channel expanded by means of different orthogonal code that includes information of respective data exchange channel. This makes it possible to disable/enable separation of transmission in direct communication line basing on environmental conditions by using communication channel and the like without complete loss of information for mobile station. EFFECT: extended pilot-signal common channels for separate transmission in direct communication line. 32 cl, 7 dwg
