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A method and device for realizing harq feedback

An implementation method and a technology for reference configuration, applied in the field of communication, can solve the problems of no design, LTE does not support cross-system carrier aggregation, etc.

Active Publication Date: 2019-04-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, since LTE does not support cross-system carrier aggregation at present, there is no HARQ feedback scheme for downlink data when TDD system and FDD system perform carrier aggregation.

Method used

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  • A method and device for realizing harq feedback
  • A method and device for realizing harq feedback
  • A method and device for realizing harq feedback

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Embodiment Construction

[0051] Aiming at the application scenario of cross-system carrier aggregation, in the embodiment of the present invention, a new HARQ feedback scheme is designed.

[0052] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0053] In the embodiment of the present invention, preferably, the TDD carrier is aggregated with the FDD downlink carrier as the main carrier, that is, when the PDSCH HARQ feedback is performed on the FDD downlink carrier, the corresponding ACK / NACK information can only be sent on the main carrier (that is, the TDD carrier) transfer on , then see image 3 As shown, the detailed process for the terminal to perform PDSCH HARQ feedback is as follows:

[0054] Step 300: The terminal determines the TDD uplink and downlink reference configuration used for PDSCH HARQ feedback for the FDD downlink carrier, that is, determines the uplink subframe that can be used to carry the ACK / NACK in...

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Abstract

The present invention discloses a realization method and device of HARQ feedback. The method comprises the steps of feeding back the ACK / NACK information corresponding to a downlink subframe (n-k) on an uplink subframe n of the time division duplex (TDD) uplink and downlink reference configuration indication, wherein k belongs to K, so that the ACK / NACK information corresponding to the downlink data can be fed back timely and accurately, and accordingly, the accurate data retransmission can be executed, and further the system performances are guaranteed effectively.

Description

[0001] The application of the present invention is a divisional application of the invention application with the filing date of March 9, 2012 and the application number of 201210062357.3, and the title of the invention is "A Method and Device for Realizing HARQ Feedback". technical field [0002] The present invention relates to the communication field, in particular to a method and device for realizing HARQ feedback. Background technique [0003] At present, LTE (Long Term Evolution, long-term evolution) supports three duplex methods, namely FDD (Frequency Division Duplex, frequency division duplex), H-FDD (Half FDD, half frequency division duplex) and TDD (Time Division Duplex , time division duplex). [0004] Among them, FDD means that the uplink transmission and downlink transmission are performed on different carrier frequency bands, allowing the base station and the terminal to simultaneously receive and transmit signals; TDD means that the uplink transmission and dow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/18
CPCH04L1/1607H04L1/1861
Inventor 林亚男沈祖康司倩倩
Owner DATANG MOBILE COMM EQUIP CO LTD