Pilot signal transmission method, signal measuring method, signal measuring system, pilot signal transmission equipment and signal measuring equipment

Abstract

The embodiment of the invention relates to the technical field of wireless communication, particularly relates to a pilot signal transmission method, a signal measuring method, a signal measuring system, a piece of pilot signal transmission equipment and a piece of signal measuring equipment, and aims to solve the problem that each antenna unit transmits one pilot signal to result in very low transmission power of each antenna unit, and user equipment is high in complexity when the number of the antenna units is large in the prior art. The pilot signal transmission method of the embodiment of the invention comprises the step in which network side equipment sends determined CSI feedback configurations to user equipment, wherein one CSI feedback configuration corresponds to one CSI-RS resource, and a pilot signal corresponding to each port of one CSI-RS resource is sent through a set of antenna units corresponding to the port. By adopting the scheme provided by the embodiment of the invention, the transmission power of the antenna units can be increased to enable the user equipment to carry out signal measurement correctly, the performance of data transmission is improved, and the complexity of the user equipment is reduced when the number of the antenna units is large.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, in particular to a method, system and equipment for transmitting pilot signals and signal measurement. Background technique [0002] The LTE (Long Term Evolution) Rel-8 (Release 8) system introduces a closed-loop precoding technology to improve spectrum efficiency. The closed-loop precoding first requires that both the network side device and the user equipment save the same set of precoding matrices, called a codebook. After the user equipment estimates the channel information according to the cell common pilot, it selects a precoding matrix from the codebook according to certain criteria. The selected criteria can be to maximize the amount of mutual information, maximize the output signal to interference noise ratio, and so on. The user equipment feeds back the index of the selected precoding matrix in the codebook to the network side device through the uplink channel, and ...

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Problems solved by technology

[0008] The present invention provides a method, system and equipment for transmitting pilot signals and signal measurement, which are used to solve the problems in the prior art that each antenna unit sends a pilot signal, which will cause the transmission power of each antenna unit to be very low, and in the The problem of high complexity of user equipment when the number of antenna elements is large

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