PILOT SIGNAL TRANSMISSION METHOD, AND CHANNEL ESTIMATION METHOD, DEVICE AND SYSTEM

摘要

Disclosed are a pilot signal transmission method, and a channel estimation method, device and system. The method comprises: transmitting a first pilot signal CPICH1 on a first antenna and transmitting a second pilot signal CPICH2 on a second antenna within a transmission time interval (TTI); transmitting a third pilot signal CPICH3 on a third antenna and transmitting a fourth pilot signal CPICH4 on a fourth antenna when a first type of terminals are not scheduled in the coverage of an MIMO system within the TTI; and transmitting the CPICH3 and a fifth pilot signal CPICH5 on the third antenna and transmitting the CPICH4 and a sixth pilot signal CPICH6 on the fourth antenna when the first type of terminals are scheduled in the coverage of the MIMO system within the TTI. By means of the method of the present invention, the interference of a pilot signal on a conventional terminal can be well reduced, the performance of the conventional terminal can be ensured at the same time of ensuring that the first type of terminals in the MIMO system can work well, and the power consumption for pilot transmission can be reduced effectively.