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Harq-based data transmission method, device and system

A data transmission method and number technology, which is applied in the field of communication, can solve the problems of reduced energy efficiency and high power consumption of transmitted data, and achieve the effect of energy-efficient data transmission

Active Publication Date: 2016-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, while the receiving end pursues high throughput, it needs to pay the price of high power consumption, resulting in a decrease in the energy efficiency of transmitting data.

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  • Harq-based data transmission method, device and system
  • Harq-based data transmission method, device and system
  • Harq-based data transmission method, device and system

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] The technical problem to be solved by the embodiments of the present invention is how to use the HARQ technology for traditional HSDPA / LTE air interface, and even future air interface to transmit data with high energy efficiency without damaging the system throughput. On the existing HSDPA / LTE air interface, the HARQ technology is mainly to...

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Abstract

Embodiments of the present invention provide a HARQ-based data transmission method, device, and system. The method includes: adjusting the CQI fed back by the terminal according to the current physical resources, obtaining the adjusted CQI, and determining the initial CQI corresponding to the adjusted CQI. transmit power; calculate the optimal number of RVs NRV according to the SNR gain, the adjusted CQI and the service quality requirement of the terminal; adjust the initial transmission power according to the optimal number of RVs and the adjusted CQI performing adjustment; using NRV transmission TTIs and the adjusted transmission power, sending NRV RVs of the TB to the terminal. The embodiment of the present invention also provides a base station, a terminal and a data transmission system. In this embodiment, on the basis of not affecting the system throughput, energy-efficient data transmission is realized.

Description

technical field [0001] The present invention relates to communication technology, in particular to a HARQ-based data transmission method, device and system. Background technique [0002] Hybrid Automatic Repeat Request (Hybrid Automatic Repeat Request; hereinafter referred to as: HARQ) technology, as a key technology of modern wireless communication, provides a strong guarantee for the reliable transmission of wireless data, and has been used in High Speed ​​Downlink Packet Access (High Speed ​​Downlink Packet Access; hereinafter referred to as: HSDPA) And Long Term Evolution (Long Term Evolution; hereinafter referred to as: LTE) has been widely used. HARQ can be divided into three types from the implementation mechanism. The first type of HARQ (HARQType I) is also called traditional ARQ. The receiving end first corrects the data packet error. If there is an error that cannot be corrected, it sends a data packet retransmission request and discards the error at the same time....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/04H04W52/18H04W88/02H04W88/08
CPCH04W52/50H04W52/265H04B17/24H04W52/48H04W52/241H04W72/21H04L1/1893H04L5/0057H04W72/0446H04W88/02
Inventor 吴晔张伟
Owner HUAWEI TECH CO LTD