Terminal device and multi-service mode hybrid automatic repeat request feedback method

A technology of hybrid automatic retransmission and terminal equipment, which is applied in the field of wireless networks and can solve problems such as PUCCH resource conflicts

Inactive Publication Date: 2016-05-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a hybrid automatic repeat request feedback method for terminal equipment and multi-service modes, so as to solve the problem of PUCCH resource conflict in the prior art when the same DCI contains multiple service information

Method used

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  • Terminal device and multi-service mode hybrid automatic repeat request feedback method
  • Terminal device and multi-service mode hybrid automatic repeat request feedback method
  • Terminal device and multi-service mode hybrid automatic repeat request feedback method

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Embodiment 1

[0049] In order to solve the problem of PUCCH resource conflict, the inventor of the present application proposes that virtual CCE can be used to determine the resource location occupied by each service, that is, in the resource location On top of that, a virtual CCE offset value is added to distinguish PUCCH resources, and the size of the virtual CCE offset value is related to the number of services and the number of code streams. In this way, while reducing the signaling overhead, the isolation of PUCCH resources can be maximized, and the downlink throughput can be effectively improved.

[0050] Based on the above ideas, this embodiment provides a hybrid automatic repeat request feedback method for multiple service modes, including the following operations:

[0051] According to the comparison result of the total number of code streams IALL of all services in the current subframe and the set threshold, the terminal device performs HARQ feedback on the resource position corr...

Embodiment 2

[0074] This embodiment provides a terminal device that can implement the method in Embodiment 1 above, and includes at least the following modules.

[0075] The first unit determines the comparison result between the total number of streams IALL of all services in the current subframe and the set threshold;

[0076] Among them, set the threshold and the total number N of CCEs occupied by DCI CCE related. Preferably, the threshold value is set to be N CCE half of.

[0077] The second unit performs HARQ feedback on the resource position corresponding to each service in the current subframe according to the comparison result of the total code stream number IALL of all services in the current subframe determined by the first unit and the set threshold, or performs HARQ feedback in the current subframe The HARQ feedback is performed at the resource positions corresponding to each code stream in each service in the frame.

[0078] Wherein, the second unit, performing HARQ feedba...

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Abstract

The invention discloses a terminal device and a multi-service mode hybrid automatic repeat request feedback method, and relates to the wireless network technology adopting the terminal feedback information for the transmission. The multi-service mode hybrid automatic repeat request feedback method is characterized in that according to a comparison result between a total code stream number IALL of all services of a current subframe and a set threshold value, the terminal device can be used for the HARQ feedback on the resource positions corresponding to various services of the current subframe, or can be used for the HARQ feedback on the resource positions corresponding to the code streams of various services of the current subframe. The invention also discloses the terminal device. By adopting the invention, the resource conflict problem can be effectively solved. Compared to the prior art, the PUCCH resource distinguishing effect can be achieved, and by adopting the effective combination with the given information, the extra signaling overheads during the downlink multi-service HARQ-ACK feedback can be prevented.

Description

technical field [0001] The present invention relates to a wireless network technology for transmission using terminal feedback information, in particular to a method and device for HARQ (Hybrid Automatic Repeat Request, hybrid automatic repeat request) feedback using a PUCCH channel. Background technique [0002] In the LTE protocol, different levels of QCI (QoSClassIdentifier) ​​need to create different bearers. Multiple bearers scheduled by the same user in the same subframe can only be encapsulated into one scheduling packet, using the same transmission mode and modulation method. Therefore, the packet error rate is also the same. For bearers with stricter packet loss rate requirements, the air interface transmission accuracy is generally improved by configuring AM mode. The packet loss rate can be reduced through retransmission, but the packet delay will be increased. [0003] At present, multiple bearers scheduled by the same user in the same subframe are encapsulated i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1861H04L1/1822H04L5/0055
Inventor 蒙波黄俊李萍张婷
Owner ZTE CORP
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