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Hybrid automatic retransmission request communication method, device and communication system

A hybrid automatic retransmission and communication method technology, applied in wireless communication, using return channel for error prevention/detection, network traffic/resource management, etc., can solve the problem of uncontrollable HARQ round-trip delay and unselectable feedback of ACK/NACK messages , resending, unable to meet real-time business needs and other problems, to achieve the effect of meeting real-time business needs and reducing HARQRTT

Active Publication Date: 2011-02-02
HUAWEI TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

In the process of realizing the present invention, the inventor found that in the existing LTE-A TDD system, when the uplink and downlink subframe ratios of component carriers in different frequency bands are different, the time delay and It may also be different, but the existing technology cannot select the component carrier that feeds back the ACK / NACK message, resends the current data, or sends the next data, so it cannot control the round trip delay (Round Trip Time, hereinafter referred to as: RTT) required by the HARQ process , also known as: HARQ RTT, which cannot meet real-time business requirements

Method used

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  • Hybrid automatic retransmission request communication method, device and communication system
  • Hybrid automatic retransmission request communication method, device and communication system

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0034] figure 1 It is a flowchart of an embodiment of the HARQ communication method of the present invention. Such as figure 1 As shown, the HARQ communication method of this embodiment includes:

[0035] Step 101, receiving a first Hybrid Automatic Repeat Request (HARQ) message.

[0036] Step 102, according to the time delay between the first HARQ message and the second HARQ message of the N component carriers that can be used to send the second HARQ message in...

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Abstract

The invention discloses a hybrid automatic retransmission request communication method, a device and a communication system. The method comprises the following steps: receiving a first hybrid automatic retransmission request (HARQ) message; selecting a member carrier having the minimum time delay according to the time delay between the first HARQ message and a second HARQ message of N member carriers which can be used for transmitting the second HARQ message in a carrier aggregation, wherein N is an integral number greater than 1, the first HARQ message is current data and the second HARQ message is an acknowledgement / negative acknowledgement message (ACK / NACK message), or the first HARQ message is the ACK / NACK message and the second HARQ message is previous data corresponding to the ACK / NACK message or next data of the previous data; and transmitting the second HARQ message by means of the member carrier having the minimum time delay. The embodiment of the invention can reduce HARQ RTT, thereby meeting the requirements of real-time services.

Description

technical field [0001] The present invention relates to communication technology, in particular to a hybrid automatic repeat request communication method, device and communication system. Background technique [0002] In the Third Generation Partnership Project (3 rd In the Generation Partnership Project (hereinafter referred to as: 3GPP) Evolved Universal Terrestrial Radio Access (hereinafter referred to as: E-UTRA) system, data transmission and reception support physical layer hybrid automatic repeat request (Hybrid Automatic Repeat Request) , hereinafter referred to as: HARQ) technology, thereby reducing the data transmission delay and obtaining a higher data transmission rate. In HARQ technology, the data receiver needs to feed back an acknowledgment (Acknowledgment, hereinafter referred to as: ACK) message or a negative acknowledgment (Negative-acknowledgement, hereinafter referred to as: NACK) message to the data sender, namely: ACK / NACK message to inform the data tr...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04W28/04
Inventor 杜高科吕永霞陈小波万蕾
Owner HUAWEI TECH CO LTD
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