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Method and system for transmitting feedback information of HARQ, UE, and base station

A technology of feedback information and transmission method, applied in base station and system, feedback information transmission method of hybrid automatic repeat request, user terminal field

Active Publication Date: 2017-11-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a HARQ feedback information transmission method, UE, base station and system, which solves the problem of how to realize the transmission of HARQ feedback information

Method used

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  • Method and system for transmitting feedback information of HARQ, UE, and base station
  • Method and system for transmitting feedback information of HARQ, UE, and base station
  • Method and system for transmitting feedback information of HARQ, UE, and base station

Examples

Experimental program
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Effect test

example 1

[0361] The UE aggregates 10 carriers, of which carrier 1 is a licensed primary carrier, and carriers 2-10 are unlicensed carriers. Carriers 1 to 5 are carrier group A, and carriers 6 to 10 are carrier group B. In carrier group A, the UE transmits HARQ feedback information to the base station according to the existing CA method. In this example, the HARQ feedback information transmission of carrier group B is mainly described as an example:

[0362] Assuming that the downlink supports a maximum of 16 processes, the base station schedules single codeword downlink transmission on both subframes 1 to 3 and subframes 5 to 6 of carrier 6-10, and the base station sends indication information on subframe 5 of carrier 7 , Indicating that subframe 9 of UE carrier 7 is the transmission subframe of HARQ feedback information; the base station also sends indication information on subframe 6 of carrier 8, indicating that subframe 10 of terminal carrier 8 is the transmission subframe of HARQ fee...

example 2

[0369] The UE aggregates 10 carriers, of which carrier 1 is a licensed primary carrier, and carriers 2-10 are unlicensed carriers. Carriers 1 to 5 are carrier group A, and carriers 6 to 10 are carrier group B. In carrier group A, the UE transmits HARQ feedback information to the base station according to the existing CA method. This example mainly focuses on the transmission of HARQ feedback information of carrier group B:

[0370] Assuming that the base station schedules dual codeword downlink transmissions on both subframes 1 to 3 and subframes 5 to 6 of carriers 6 to 8, the base station indicates a 2-bit time domain C-DAI and a 2-bit T- in the downlink DCI. DAI, that is, the C-DAI contained in subframes 1 to 3 are 1, 2, and 3 respectively, the C-DAI contained in subframe 5 is 4, and the C-DAI contained in subframe 6 is 1, T-DAI is 1. The base station sends indication information on subframe 5 of carrier 7. The indication information schedules the UE to transmit PUSCH in subf...

example 3

[0374] The UE aggregates 10 carriers, of which carrier 1 is a licensed primary carrier, and carriers 2-10 are unlicensed carriers. Carriers 1 to 5 are carrier group A, and carriers 6 to 10 are carrier group B. In carrier group A, the terminal transmits HARQ feedback information to the base station according to the existing CA method. This embodiment mainly focuses on the transmission of HARQ feedback information of carrier group B as an example:

[0375] Suppose that the base station schedules dual-codeword downlink transmissions on both subframes 1 to 3 and subframes 5 to 6 of carriers 6 to 8. The base station indicates 2-bit time domain and frequency domain C-DAI and 2 in the downlink DCI. Bit T-DAI, that is, the C-DAI contained in subframe 1 of carriers 6 to 8 are 1, 2, and 3 respectively, and the C-DAI contained in subframe 2 of carriers 6 to 8 are 4, 1, 2, the C-DAI included in subframe 3 of carriers 6-8 are 3, 4, and 1, respectively, and the C-DAI included in subframe 5 of...

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Abstract

The invention provides a method and system for transmitting feedback information of HARQ, UE, and a base station. The method may include that the UE receives indication information sent by the base station, wherein the indication information is used to indicate a transmission sub-frame available for transmitting the feedback information of the HARQ in a carrier; the UE generates the feedback information of the HARQ; and the UE transmits the feedback information of the HARQ to the base station in the transmission sub-frame. The embodiments of the present invention may implement the transmission of the feedback information of the HARQ.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a method for transmitting feedback information of Hybrid Automatic Repeat re Quest (HARQ), a user terminal (UE, User Equipment), a base station, and a system. Background technique [0002] With the development of communication technology, the Long Term Evolution (LTE) system will support deployment and transmission on unlicensed spectrum resources to improve user experience and expand coverage. In order to support the LTE system to support deployment and transmission on unlicensed spectrum resources, a licensed carrier assisted access (LAA, Licensed Assisted Access) method is currently defined to implement the LTE system to support deployment and transmission on unlicensed spectrum resources. Among them, when the UE uses an unlicensed carrier in the LAA mode, it must first access a licensed primary carrier, and the unlicensed carrier can only be used as a secondary carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18H04W72/12
CPCH04L1/1607H04L1/1812H04W72/1268H04L1/16H04L1/1887H04L1/1896H04B7/0482H04L5/0094H04L1/1819H04L5/0055H04W72/0446H04W72/0453H04W74/0808
Inventor 司倩倩潘学明高雪娟王加庆
Owner DATANG MOBILE COMM EQUIP CO LTD
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