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Method and equipment for transmitting ACK (acknowledgement)/NACK (Negative Acknowledgement) information

A transmission method and terminal equipment technology, applied in the field of ACK/NACK information transmission, to achieve the effect of reducing information retransmission, improving transmission performance, and avoiding excessive merging

Inactive Publication Date: 2011-07-27
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0058] Embodiments of the present invention provide a method and device for transmitting ACK / NACK information, which solves the problem of which ACK / NACK transmission scheme is used when a terminal device only receives data on a downlink primary carrier in the prior art

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  • Method and equipment for transmitting ACK (acknowledgement)/NACK (Negative Acknowledgement) information
  • Method and equipment for transmitting ACK (acknowledgement)/NACK (Negative Acknowledgement) information
  • Method and equipment for transmitting ACK (acknowledgement)/NACK (Negative Acknowledgement) information

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Embodiment Construction

[0078] As described in the background, for a terminal device configured with multiple downlink carriers in the LTE-A system, when the terminal device only receives data on the downlink primary carrier, if the existing ACK / NACK information transmission scheme Setting, it will cause the terminal equipment configured to use the PUCCH format 3 transmission scheme to be unable to obtain channel resources and cannot perform transmission, or the uplink control channel semi-static resource overhead of the terminal equipment configured to use the PUCCH format 1b with channel selection transmission scheme will increase or The problem of reduced retransmission efficiency, therefore, the existing technical solutions have not yet determined which ACK / NACK transmission scheme such a terminal device uses to transmit ACK / NACK information.

[0079] Based on the above reasons, the embodiment of the present invention provides an ACK / NACK transmission method that adopts different transmission sche...

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Abstract

The embodiment of the invention discloses a method and equipment for transmitting ACK / NACK information. By adoption of the technical scheme disclosed by the embodiment of the invention, for terminal equipment configured with a plurality of downlink carriers, a transmission scheme for feedback of ACK / NACK information when the terminal equipment only receives data on a downlink main carrier is provided; and therefore, on the condition of guaranteeing normal working of the terminal equipment, the excessive merging of the feedback information is avoided during the feedback of the ACK / NACK information, the unnecessary information retransmission is reduced and the transmission performance of the system is improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a transmission method and equipment for ACK / NACK information. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) Rel-8 / 9 system, UE (User Equipment, user equipment, that is, terminal equipment) only works on one carrier, and the UE can use the following ACK (Acknowledgment, positive confirmation) / NACK (Negative Acknowledgment, negative acknowledgment) feedback information transmission scheme. [0003] Solution 1, PUCCH (Physical Uplink Control Channel, physical uplink control channel) format 1a solution. [0004] The modulation method is BPSK (Binary Phase Shift Key, binary phase shift keying), which is used to transmit 1-bit (bit) ACK / NACK information. In the conventional CP (Cyclic Prefix, cyclic prefix) scenario, there are 3 columns of RS (Reference Signal, reference signal) in each slot, occupying the middle 3 SC-FDMA (Single...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
Inventor 高雪娟沈祖康林亚男
Owner CHINA ACAD OF TELECOMM TECH
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