Channel multiplexing and mapping method and device

Abstract

The invention provides a channel multiplexing and mapping method and a channel multiplexing and mapping device, which are applied to the multiplexing and mapping of a relay link-physical hybrid automatic repeat request indicator channel (R-PHICH) and a direct link-physical hybrid automatic repeat request (HARQ) indicator channel (PHICH). The method and the device simply realize the multiplexing and the mapping of the R-PHICH and the PHICH by repeatedly encoding and modulating a single data flow or the multi-data flow feedback information of an uplink service, spreading spectrums of repeatedly encoded and modulated signals according to a preset spectrum spreading factor and mapping corresponding control channel resources in a time direction and a frequency direction after the spectrum spreading. The method and the device meet the requirements of B3G / 4G research targets well and solve the problem of multi-data flow feedback acknowledgement information. Meanwhile, the method has the advantage of ensuring the backward compatibility (compatibility with an LTE system).

Description

technical field [0001] The present invention relates to physical hybrid automatic retransmission technology, especially to a method and device for channel multiplexing and mapping, which is suitable for physical hybrid automatic retransmission request indicator channel (R-PHICH, Relay link-Physical Hybrid Automatic) of relay link Repeat Request Indicator Channel) and the physical HARQ indicator channel (PHICH, Physical Hybrid Automatic Repeat Request Indicator Channel) of the direct link and the multiplexing and mapping. Background technique [0002] In the Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) system, since the time-frequency two-dimensional data form is adopted, the multiplexing form between the control channel and the traffic channel can be in the time direction and the frequency direction In the above, the time division multiplexing (TDM, Time Division Multiplex) mode and the frequency division multiplexing (FDM, Fr...

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Problems solved by technology

[0039] Since in the downlink, RN first transmits control information to its subordinate UEs in the first 1 or 2 OFDM symbols, and eNB transmits control information to RN directly to UEs in the first 1 or 2 or 3 or 4 OFDM symbols, therefore, The RN cannot receive the control information of the eNB-RN link within the first 1 or 2 OFDM symbols

[0040] At present, in the LTE and LTE-A systems of 3GPP, research on MBSFN subframe as a relay subframe is a hotspot. However, there is no physical hybrid automatic repeat request indicating channel multiplexing for the relay link from eNB to RN. and mapping methods to meet the needs of B3G / 4G research objectives; and the method of physical hybrid automatic repeat request indication channel multiplexing and mapping from eNB to UE direct transmission link only involves single data stream, BPSK modulation mode The application scenario cannot be applied to the application scenario of dual data streams or even multiple data streams, so the method of physical hybrid automatic repeat request indication channel multiplexing and mapping from eNB to UE cannot flexibly adapt to the needs of B3G / 4G research objectives

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