Method and device for retransmitting data

A technology for retransmitting data and retransmission, applied in the field of signal transmission

Inactive Publication Date: 2018-01-05
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to propose a method and device for retransmitting data, aiming to solve the problem of how to use the hybrid automatic repeat request mechanism in multi-user non-orthogonal overlay transmission

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  • Method and device for retransmitting data
  • Method and device for retransmitting data
  • Method and device for retransmitting data

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Embodiment Construction

[0070] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that, the specific embodiments described herein are only used to explain the embodiments of the present invention, but are not intended to limit the embodiments of the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the embodiments of the present invention.

[0071] refer to figure 1 , figure 1 It is a schematic flowchart of a method for retransmitting data provided by an embodiment of the present invention.

[0072] like figure 1 As shown, the method for retransmitting data includes:

[0073] Step 101, the base station obtains pre-paired feedback information of far users with low noise ratio, and obtains feedback information of near users with high noise ratio;

[0074] Specifically, it is assu...

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Abstract

The embodiment of the invention discloses a method and device for retransmitting data. The method comprises the following steps: enabling a base station to acquire feedback information of pre-paired remote users with a low signal-to-noise ratio and the feedback information of near users with a high signal-to-noise ratio; determining whether data retransmission is needed according to the feedback information of the remote users and the feedback information of the near users; if the base station determines that the data retransmission is needed, determining a retransmission strategy according tothe feedback information of the remote users and the feedback information of the near users; and transmitting data to the near users and the remote users according to the retransmission strategy. Through flexible HARQ retransmission and merging strategies, the retransmission efficiency of multi-user overlay transmission can be improved, and the transmission reliability can be guaranteed.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of signal transmission, and in particular, to a method and apparatus for retransmitting data. Background technique [0002] In the Long Term Evolution (Long Term Evolution, LTE) / LTE-A Release 13, the SI research on the multi-user downlink superimposed transmission is completed, and the work in the WI phase is currently underway. The research in the SI stage preliminarily shows that the multi-user superimposed transmission in the same time, frequency and space can improve the system capacity compared with the orthogonal transmission. In addition, from the perspective of information theory, non-orthogonal superposition transmission and advanced interference cancellation receivers can achieve theoretical multi-user capacity. Therefore, for the fifth generation mobile communication system, the non-orthogonal multiple access technology based on superposition coding will be a very potential ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16H04L1/00H04W52/34
Inventor 刘兵朝孙鹏
Owner BEIJING XINWEI TELECOM TECH
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