A reference demodulation pilot processing method and device

Abstract

The invention discloses a reference demodulation pilot processing method and equipment, including: receiving the first type of reference demodulation pilot and the second type of reference demodulation pilot; using the first type of reference demodulation pilot and the control channel Performing association; using the first type of reference demodulation pilot and the second type of reference demodulation pilot to associate with the data channel; also includes: determining the reference demodulation pilot corresponding to the data information and / or control information to be sent; determining Refer to the time-domain position relationship between the demodulation pilot and the control channel and / or data channel; send the reference demodulation pilot according to the time-domain position relationship; also include: determine the reference demodulation pilot and the control channel corresponding to the data channel The corresponding reference demodulation pilot relationship set; determine the relationship between the reference demodulation pilot associated with the data channel and the reference demodulation pilot associated with the control channel from the relationship set; notify the reference demodulation associated with the data channel through signaling The relationship of the pilot to the reference demodulation pilot associated with the control channel.

Description

technical field [0001] The present invention relates to the field of communication, in particular to a method and equipment for processing reference demodulation pilots in the field of wireless communication. Background technique [0002] In a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) technology, generally speaking, the reference demodulation signal of the control channel and the control channel are multiplexed by a hybrid method of time division and frequency division , which is characterized in that in the OFDM symbol where the control channel is located, there will be a reference demodulation pilot corresponding to the control channel; the data channel and the reference demodulation pilot of the data channel are also multiplexed in the same way. In the OFDM symbol, there will be a reference demodulation pilot corresponding to the data channel. In the current Long Term Evolution (LT...

AI Technical Summary

Problems solved by technology

[0007] Problem 1: The reference demodulation pilot for data or control is embedded in the OFDM symbol where the data channel and control channel are located, and is distributed very discretely in the time domain

The problem that this method will cause is: the receiving end needs to accept and buffer the last OFDM symbol containing the reference demodulation pilot before starting the channel estimation process of the pilot, and then demodulating the data or control. This method will lead to an increase in processing delay; pilot and data / control mix OFDM symbols, so that some parameter settings of the OFDM symbols need to take into account both the characteristics of the pilot and the characteristics of the data, which affects flexibility and cannot be optimized in a targeted manner

[0008] Question 2: The data channel and the control channel used exactly the same pilot in the early version. This method will bring great flexibility restrictions, because the control and data may use different multiple-input multiple-output (MIMO, Multiple-InputMultiple -Output) transmission technology, number of layers, etc.

In the later version, completely independent pilots are used, which may cause the problem of low pilot utilization efficiency, because the corresponding multi-antenna physical channels for control and data transmission are the same, and there will be obvious differences in demodulation pilots. Correlation

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