Transmitting method and transmitting device of uplink control message

A transmission method and technology for controlling information, applied in the field of communication, can solve the problems of decreased resource utilization, inability to feedback ACK/NACK, etc., and achieve the effect of improving overall performance

Active Publication Date: 2011-05-25
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In view of this, the main purpose of the present invention is to provide a method and device for sending uplink control information to solve the problem that ACK / NACK of some resources cannot Feedback that causes resource utilization to drop

Method used

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  • Transmitting method and transmitting device of uplink control message
  • Transmitting method and transmitting device of uplink control message
  • Transmitting method and transmitting device of uplink control message

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0099] Embodiment 1-2: When the number of CCs configured by the UE is 1, the method of bundling according to the codeword stream is adopted, and 1-bit ACK / NACK is fed back when a single codeword stream is used, and 2-bit ACK / NACK is fed back when a double-codeword stream is used; Use PUCCH Format 1b to feed back the ACK / NACK after bundling.

Embodiment 2-1

[0100] Embodiment 2-1: In the carrier aggregation scenario, when the uplink and downlink subframe configuration is 5 in the LTE-A TDD system, the maximum number of CCs configured by the UE is 2, and only the PUCCH Format 3 transmission mode is supported, and the channel selection transmission mode is not supported.

[0101] When the number of CCs configured by the UE is 2, each CC is divided into 9 groups in the time domain, and each downlink subframe corresponds to one group, and the ACK / NACK corresponding to each group is mapped to 1-bit ACK / NACK by means of spatial bundling; Each CC finally feeds back 9-bit bundled ACK / NACK, and a total of 18-bit bundled ACK / NACK is fed back on the two CCs; the ACK / NACK is fed back using PUCCH Format3.

Embodiment 2-2

[0102] Example 2-2: In the carrier aggregation scenario, when the uplink and downlink subframes in the LTE-A TDD system are configured with 5, the maximum number of CCs configured by the UE is 2, and supports the PUCCH Format 3 transmission mode and channel selection transmission mode. Which one is used specifically? The transmission mode is configured by higher layer signaling.

[0103] Wherein, the ACK / NACK is fed back using the PUCCH Format 3 transmission mode, specifically: when the number of CCs configured by the UE is 2, each CC is divided into 9 groups in the time domain, each downlink subframe corresponds to one group, each The ACK / NACK corresponding to the group is mapped to 1-bit ACK / NACK using spatial bundling; each CC finally feeds back 9-bit bundled ACK / NACK, and a total of 18-bit bundled ACK / NACK is fed back on the two CCs.

[0104] Use the channel selection transmission mode to feed back information, specifically: when the number of CCs configured by the UE is 2...

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PUM

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Abstract

The invention discloses a transmitting method and a transmitting device of an uplink control message. The method comprises the following steps that: a carrier aggregation scene of user equipment (UE) is judged, and a corresponding time-domain grouping way is determined according to the carrier aggregation scene of the UE; and the transmission of an uplink control message acknowledge character / negative acknowledge character (ACK / NACK) on a plurality of component carriers (CC) of a plurality of sub-frames can be controlled on an uplink sub-frame according to the determined time-domain grouping way. Through the method, the problem that a plurality of ACK / NACK are required to be fed back on one uplink sub-frame when the allocation of the uplink and the downlink sub-frames is 1:9 in a time division duplexing (TDD) system can be solved, the effective transmission of the ACK / NACK can be guaranteed, and the overall performance of the system is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for sending uplink control information. Background technique [0002] The Long Term Evolution (LTE, Long Term Evolution) system uses Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) and MIMO, Multi-input Multi-output It provides peak rates of uplink 50Mbps and downlink 100Mbps. Compared with 3G, LTE has a higher data transmission rate, can improve the performance of cell-edge users, increase cell capacity, reduce system delay, and can achieve wide-area coverage and backward compatibility, so it is regarded as the evolution from 3G to 4G mainstream technology. [0003] In the LTE system, acknowledgment / non-acknowledgement (ACK / NACK) feedback signals are different in a frequency division duplex (FDD, Frequency Division Duplexing) system and a time division duplex (TDD, Time Division Duplexing) system. In the FDD s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18
CPCH04L1/1861
Inventor 任璐戴博梁春丽杨维维喻斌
Owner ZTE CORP
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