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

A technology for automatic retransmission request and indication channel, which is applied in the field of communication and can solve problems such as affecting normal UE communication, inability to demodulate correctly by the receiver, and strong PHICH inter-cell interference.

Inactive Publication Date: 2012-02-01
大连海兰德维通信技术有限公司
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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-

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

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Embodiment Construction

[0054] In view of the problem in the related art that the receiver cannot demodulate the HARQ indicator due to strong inter-cell interference on the physical HARQ indicator channel, which affects the normal communication of the receiver, the present invention proposes that the sender encodes and modulates the HARQ indicator according to a predetermined coding rate. , Spreading, precoding processing and multiplexing within the group, and then repeating the data of each transmitting antenna after precoding processing. Among them, the number of repeated processing, the coding rate, and the modulation order of the modulation method are determined by the physical HARQ The resource mapping length of the indicator channel and the length of the HARQ indicator are determined; after that, the sender maps the reference signal and the repeated data before sending, and the receiver constructs the interference cancellation matrix of the physical HARQ indicator channel according to the spatial ...

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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, and in particular to a transmission method and system for a Physical Hybrid Automatic Repeat reQuest Indicator Channel (PHICH), and a device and system for transmitting a Physical Hybrid Automatic Repeat reQuest Indicator Channel (PHICH) Receiving device. Background technique [0002] The data rate provided by the existing cellular mobile communication system differs greatly between the cell center and the cell edge. This difference will not only affect the capacity of the entire system, but also cause large differences in the quality of service that users receive at 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) is an inherent problem of the cellular mobile communication system, and the traditional solution is mainly to ...

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Application Information

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IPC IPC(8): H04L1/18H04L1/06H04L1/00H04L27/26
Inventor 孙伟民严振亚杜立可韩志学喻晓冬张洪伟
Owner 大连海兰德维通信技术有限公司
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