Method, system and equipment for multi-point cooperative transmission among a plurality of cells

Abstract

The invention discloses a method, a system and equipment for multi-point cooperative transmission among a plurality of cells; the method is applied to a communication system consisting of base stations of at least two cells and at least one piece of user equipment (UE), wherein one cell is the place where the UE is located, and other cells are cooperative cells corresponding to the cells; the method comprises the following steps that: the UE receives the physical downlink control channel (PDCCH) signal of the base station of the cell, and the PDCCH signal carries instruction information; the UE receives the data signals sent by the base stations of the cell and the cooperative cells according to the instruction information carried by the PDCCH signal; and the UE demodulates the data signals sent by the base stations of the cell and the cooperative cells to obtain the data sent by the base stations of the cell and the cooperative cells. The invention solves the restriction problems that the traditional multi-point cooperative transmission technology can be only applied to cells with the same frequency and the frequency diversity can be only applied in the cells.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, system and equipment for multi-cell coordinated multi-point transmission. Background technique [0002] With the development of communication technology, ITU (International Telegraph Union, International Telegraph Union) has put forward very strict requirements on the performance of the next generation mobile communication system IMT-Advanced (International MobileTelecommunication-Advanced, Advanced International Mobile Communication), requiring the maximum system transmission The bandwidth reaches 100MHz, and the peak rate of uplink and downlink data transmission must reach 500Mbps and 1Gbps respectively, and puts forward very high requirements for the average spectral efficiency of the system, especially the edge spectral efficiency. In order to meet the requirements of the new IMT-Advanced system, 3GPP (3rd Generation Partnership Project, Third Generat...

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Problems solved by technology

[0007] The present invention provides a method, system and equipment for coordinated multi-point transmission between multiple cells to solve the problem that the coordinated multi-point transmission technology in the prior art is limited to cells of the same frequency, and the frequency diversity technology can only be applied to signal transmission within one cell The problem

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