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Method for sending hybridautomatic repeat-request acknowledgement (HARQ-ACK) feedback information

A technology for feedback information and channels, applied in wireless communication, signaling allocation, transmission path sub-channel allocation, etc., can solve the problem of not supporting PUCCH format 1b with channel selection, and achieve improved throughput performance, high compression efficiency, The effect of improving transmission efficiency

Inactive Publication Date: 2013-05-08
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PUCCH format 1b with channel selection is only applicable to TDD uplink and downlink configurations 0, 1, 2, 3, 4, and 6, and TDD uplink and downlink configuration 5. The existing technology does not support PUCCH format 1b with channel selection. Design a bundling scheme to support PUCCH format 1b with channel selection in TDD uplink and downlink configuration 5

Method used

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  • Method for sending hybridautomatic repeat-request acknowledgement (HARQ-ACK) feedback information
  • Method for sending hybridautomatic repeat-request acknowledgement (HARQ-ACK) feedback information
  • Method for sending hybridautomatic repeat-request acknowledgement (HARQ-ACK) feedback information

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0049] figure 1 It is a schematic flowchart of the method for sending HARQ-ACK feedback information in the present invention. The process includes:

[0050] Step 101: UE receives physical downlink shared channel (PDSCH) data from different CCs, decodes the received PDSCH data, judges whether the data transmission is correct, and then obtains corresponding HARQ-ACK feedback information of each subframe.

[0051] Step 102: UE obtains the bundling window size in the current HARQ-ACK feedback cycle.

[0052] The first method for obtaining the size of the bundling window in the current HARQ-ACK feedback cycle is: obtaining by reading system configuration information. For example, if the system configuration information indicates that the current TDD uplin...

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Abstract

The invention provides a method for sending hybridautomatic repeat-request acknowledgement (HARQ-ACK) feedback information. According to the method for sending the HARQ-ACK feedback information, present HARQ-ACK feedback information in a binging window is bound, total number of bits is enabled to meet the length demand of an HARQ-ACK feedback information transport format for the HARQ-ACK feedback information, more component carriers (CC) are enabled to be supported to conduct carrier aggregation when 5 is configured by time division duplexing (TDD) uplink and downlink, so that peak throughput of user downlink is improved.

Description

technical field [0001] The invention relates to wireless communication system technology, in particular to a method for sending HARQ-ACK feedback information. Background technique [0002] The Long Term Evolution (LTE) system performs data transmission based on Hybrid Automatic Repeat Request (HARQ), that is, according to the receiving status of the data, the data receiver will correspondingly send HARQ-ACK feedback information of acknowledgment (ACK) or negation (NACK). Scheduling information for dynamic downlink data transmission is transmitted through a physical downlink control channel (PDCCH). [0003] For the LTE TDD system, when the number of downlink subframes is greater than the number of uplink subframes, the HARQ-ACK feedback information of multiple downlink subframes needs to be concentrated and transmitted in the same uplink subframe. One of the feedback methods is to perform an AND (AND) operation on the HARQ-ACK feedback information for each downlink subframe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L5/00H04W28/06H04W72/04
CPCH04L1/16H04L5/00H04W28/06H04L1/1854H04L1/1635H04W72/04H04L1/1861H04W72/042H04L5/0055H04W72/23
Inventor 付景兴孙程君
Owner BEIJING SAMSUNG TELECOM R&D CENT
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