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Information transmission method and device, sending equipment and computer readable storage medium

A technology for information transmission and equipment, applied in transmission systems, digital transmission systems, multiple use of transmission paths, etc., and can solve problems such as technical ineffective solutions

Active Publication Date: 2019-04-05
CHINA MOBILE COMM LTD RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is no effective solution for how to effectively transmit PTRS when multiple mini-slots are jointly transmitted.

Method used

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  • Information transmission method and device, sending equipment and computer readable storage medium
  • Information transmission method and device, sending equipment and computer readable storage medium
  • Information transmission method and device, sending equipment and computer readable storage medium

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Embodiment Construction

[0070] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0071] Phase noise is due to non-idealities in the local oscillator. The random fluctuation of the output value of the frequency source caused by random white noise, flicker noise, etc. inside the frequency source is called phase noise, which describes all the causes of output frequency changes in a short period of time, and is the signal sideband frequency spectrum noise. measure. In real environment, phase noise is unavoidable in the output process of the frequency source.

[0072] However, phase noise will deteriorate the signal-to-noise ratio (SNR) or error vector magnitude (EVM) at the receiving end, causing a large number of bit errors, which directly limits the use of high-order constellation modulation and seriously affects system capacity. For example, if figure 1 As shown, in the single-carrier system, the phase noise causes rando...

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Abstract

The invention discloses an information transmission method and device, a piece of sending equipment and a storage medium. The method includes the following steps: a reference signal is sent when information is jointly transmitted in multiple mini-slots, and the reference signal is used for a receiver to determine and eliminate the phase difference between symbols, wherein a DMRS (Demodulation Reference Signal) used to demodulate the channels of the multiple mini-slots is transmitted at least in a first mini-slot of the multiple mini-slots; in all the mini-slots except the first mini-slot, an RE (Resource Element) associated with a PTRS (Phase Tracking Reference Signal) RE transmits DMRSs or other reference signals for phase tracking; for each of the other mini-slots, the reference signalsinclude either DMRSs or other reference signals for phase tracking transmitted in the mini-slot and PTRSs transmitted in the mini-slot; or the transmission of PTRSs or other reference signals for phase tracking is supplemented on non-overlapping frequency domain resources; and for each of the other mini-slots, the reference signals include PTRSs transmitted on overlapping frequency domain resources and PTRSs or other reference signals for phase tracking transmitted on non-overlapping frequency domain resources.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to an information transmission method, device, sending device and computer-readable storage medium. Background technique [0002] The fifth-generation mobile communication technology (5G) will support low-frequency + high-frequency full-band access. However, the phase noise problem in the high frequency band is very prominent. Therefore, Phase-Tracking Reference Signal (PTRS, Phase-Tracking Reference Signal) is specially introduced in 5G high-frequency communication for phase estimation and compensation. [0003] On the other hand, the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) standard is considering the joint transmission of multiple mini-slots. [0004] However, there is still no effective solution in related technologies for how to effectively transmit PTRS when multiple mini-slots are jointly transmitted. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L25/02H04L25/03H04L27/26
CPCH04L5/0048H04L5/0083H04L25/0224H04L25/03006H04L27/261H04L27/2649
Inventor 钟科
Owner CHINA MOBILE COMM LTD RES INST
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