A channel mapping method and device

Abstract

The invention provides a channel mapping method and device, and provides a mechanism of channel mapping, wherein the processing resources and the storing resources can be saved in the channel mapping process, and the implementation cost is reduced. The channel mapping method comprises the steps that the bit data cached in a first cache are read, and the scrambling processing is carried out on the bit data to generate first data; layering mapping is carried out on the first data to obtain second data mapped on at least one layer; RE mapping is carried out on the second data to obtain third data mapped on a virtual resource block corresponding to the layer; modulation is carried out on the third data to obtain complex value data, and precoding is carried out on the complex value data to obtain antenna data mapped on at least one antenna port; the antenna data are cached through a second cache; the antenna data in the second cache are read, and orthogonal frequency division multiplexing signals are generated based on the antenna data. The channel mapping method and device are used for saving the storing resources and the processing resources in the channel mapping.

Description

technical field [0001] The present invention relates to the communication field, in particular to a channel mapping method and device. Background technique [0002] At present, in the LTE (Long Term Evolution, Long Term Evolution) downlink on the base station side, the downlink PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel, Physical Downlink Shared Channel) link has high performance and low memory consumption requirements. Due to the above requirements, In the prior art, hardware accelerators are usually used to implement architectures instead of software implementations. [0003] Since the signals transmitted at the physical layer are all OFDM (Orthogonal Frequency Division Multiplexing) symbols, when the hardware accelerator performs LTE downlink PDSCH processing in the prior art, the data mapped from the transmission channel to the physical channel, After a series of low-level processing, it is sent to the antenna port, and then transmitted ov...

AI Technical Summary

Problems solved by technology

[0007] Since both layer mapping and resource particle mapping are complex-valued data processing, and TTI-level complex-valued data needs to be stored after resource particle mapping, it will not only cause large resource consumption during processing, but also cause large data Storage resource consumption, while increasing the cost of implementation

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