Transmission method and system of physical hybrid automatic repeat request indicator channel

Abstract

The invention discloses a transmission method and a system of a physical hybrid automatic repeat request indicator channel. The method comprises the steps that repetition code coding processing, modulation, spectrum spreading, pre-coding processing and interclass multiplexing are conducted to a hybrid automatic repeat request (HARQ) indicator; reprocessing is conducted to the data of each transmitting antenna after multiplexing; for each transmitting antenna, reference signals and the data which is obtained after reprocessing are mapped to the physical resource blocks of the transmitting antenna according to the resource mapping scheme of the HARQ indicator channel and then are transmitted; each receiving antenna of a receiving side conducts to resource extraction to the received data and reference signals, space channel vectors from a serving base station and an interference base station to the receiving antenna of the receiving side are calculated according to the obtained reference signals, space channel matrices are obtained accordingly and interference elimination matrices based on a preset pre-coding scheme are constructed; and the receiving side eliminates the data transmitted by the interference base station according to the interference elimination matrices and a preset detection criteria, and the HARQ indicator is obtained through processing inverse to the processing of the transmitting side.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a physical hybrid automatic repeat request indicator channel (Physical Hybrid Automatic Repeat reQuest Indicator Channel, referred to as PHICH) transmission method and system, and a physical hybrid automatic repeat request indicator channel sending device and receiving device. Background technique [0002] The data rate provided by the existing cellular mobile communication system has a large difference between the center of the cell and the edge of the cell. This difference will not only affect the capacity of the entire system, but also cause a large difference in the quality of service obtained by users in different locations. , thereby affecting the user experience. Therefore, many wireless communication systems regard improving cell edge performance as one of the main demand indicators. [0003] Inter-Cell Interference (ICI for short) is an inherent problem in the cel...

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Problems solved by technology

[0016] Aiming at the problem in the related art that the receiver cannot be demodulated correctly due to strong inter-cell interference on the PHICH, which affects normal UE communication, no effective solution has been proposed so far.

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