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Data transmission method and device

A data transmission method and a technology of a data transmission device, which are applied in the field of communication, and can solve problems such as low signal-to-noise ratio of received signals and pollution of received signals

Active Publication Date: 2019-10-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present application provides a data transmission method and device, which solves the problem that the residual self-interference signal in the existing full-duplex communication technology will pollute the received signal and cause the signal-to-noise ratio of the received signal to be low

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  • Data transmission method and device

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Embodiment Construction

[0046] A full duplex (full duplex, FD) technology means that a node can transmit and receive data on the same time-frequency resource, that is, transmit and receive data at the same time and on the same frequency resource. The same time-frequency resource in this embodiment of the present application may mean that resources for sending and receiving data include the same time slot or symbol in the time domain, and include the same subcarrier in the frequency domain.

[0047] The embodiments of the present application are applicable to data communication between a node supporting full-duplex communication and one or more other nodes, and the involved wireless communication scenarios may include: an access point (access point, AP) and a station (station, STA ), communication between APs, communication between STAs, and communication between STAs, etc.

[0048] Among them, in the communication between the AP and the STA, the AP can support full-duplex communication, and the STA c...

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Abstract

The embodiment of the invention provides a data transmission method and device, relates to the technical field of communication, and solves the problem that the signal-to-noise ratio of a received signal is low due to the fact that the received signal is polluted by a residual self-interference signal in full duplex communication. The method is applied to equipment supporting full duplex communication, and comprises the following steps: sending a first data frame on the same time-frequency resource, and receiving a second data frame, wherein the first data frame and the second data frame bothcomprise a plurality of OFDM symbols, and a pilot frequency sequence adopted by the OFDM symbols in the first data frame and a pilot frequency sequence adopted by the OFDM symbols in the second data frame are mutually orthogonal.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a data transmission method and device. Background technique [0002] The full duplex (full duplex, FD) technology means that the communication nodes send and receive data at the same time and on the same frequency resource. For example, if figure 1 As shown, communication nodes A and B both include a transmitter and a receiver, the transmitter in A is connected to the receiver in B through a data line, and the receiver in A is also connected to the transmitter in B through a data line, The sending and receiving data between A and B can be transmitted on the same wireless channel at the same time, so that the utilization efficiency of wireless spectrum can be improved, and the problem of scarcity of wireless spectrum resources can be solved. However, since full-duplex uses the same time-frequency resources to send and receive data, the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L5/14
CPCH04L27/2611H04L27/261H04L5/14H04L27/2602H04L27/2627H04L27/26132H04B1/525
Inventor 淦明陈特彦梁丹丹左鑫吴涛
Owner HUAWEI TECH CO LTD