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Method for transmitting control information, user equipment and base station

A technology for transmitting control and control information, applied in the use of forward error control, transmission path sub-channel allocation, transmission system, etc., can solve the problems of inapplicability, waste of user equipment transmit power, and high transmit power

Active Publication Date: 2017-04-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in order to meet the performance target for the UCI with higher performance target requirements, the user equipment uses a higher transmission power when sending UCI, but for the UCI with lower performance target requirements, the transmission power is too high. High, thus wasting the transmission power of the user equipment, making the power utilization efficiency not high
[0009] This scheme is not suitable for power-constrained user equipment

Method used

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  • Method for transmitting control information, user equipment and base station
  • Method for transmitting control information, user equipment and base station
  • Method for transmitting control information, user equipment and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] image 3 is a schematic flowchart of the process of transmitting control information according to an embodiment of the present invention.

[0095] In step 301, the UE acquires resources occupied by the first uplink control information UCI, and acquires resources occupied by the second UCI.

[0096] For example, in the LTE-A (Long Term Evolution-Advanced, Advanced Long Term Evolution) carrier aggregation scenario, it will appear that the channel state information (Channel State Information, CSI) and hybrid automatic retransmission confirmation information need to be reported on an uplink subframe at the same time (Hybrid Automatic Repeat request-Acknowledgment, HARQ-ACK). CSI includes periodic CSI and aperiodic CSI. The periodic CSI includes channel quality indicator (Channel quality Indicator, CQI), precoding matrix indicator (Precoding Matrix Indicator, PMI), rank indicator (Rank Indication, RI), precoding type indicator (Precoding type indicator, PTI) and other info...

Embodiment 2

[0184] In Embodiment 1, when the UE simultaneously maps the first UCI and the second UCI to the physical uplink channel for transmission, the second UCI punctures the first UCI. In the second embodiment, the first UCI and the second UCI are simultaneously mapped to the physical uplink channel for transmission by performing rate matching on the first uplink UCI according to the resources occupied by the second UCI.

[0185] There are two differences between embodiment two and embodiment one:

[0186] One is the resource Q' occupied by the first UCI in each mode in step 301 of the first embodiment CSI =Q'-Q' HARQ-ACK ;

[0187] The second is that step 303-2 in the first embodiment encodes the vector sequence of the first UCI and the encoded vector sequence of the second UCI When channel interleaving is performed, the coded vector sequence of the second UCI needs to be Write the matrix, and then encode the vector sequence of the first UCI Write matrix, then in the step ...

Embodiment 3

[0202] Embodiment 1 and Embodiment 2 both map the second UCI to all time-domain SC-FDMA symbols for transmission. In Embodiment 3, only the second UCI is mapped to some time-domain SC-FDMA symbols for transmission, which is applicable to the time-domain SC-FDMA symbols to be transmitted. The number of encoded bits of the second UCI is less and the physical uplink channel for transmitting UCI is as follows Figure 4 or Figure 5 Scene of the structure shown.

[0203] Compared with Embodiment 1 and Embodiment 2, Embodiment 3 is different in that the set of columns in step 303-2 is different. In Embodiment 3, if the physical uplink channel is as Figure 4 As shown in the modified PUCCH format 3, the set of columns is {1, 2}; if the physical uplink channel is as follows Figure 5 For the modified PUCCH format 3 shown, the set of columns is {2, 3} or {1, 4} or {1, 4, 3, 2}.

[0204] For other steps of the third embodiment, reference may be made to the first embodiment, so no det...

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Abstract

Embodiments of the present invention disclose a method, user equipment and base station for transmitting control information. The method includes: acquiring resources occupied by a first UCI, and acquiring resources occupied by a second UCI; and performing channel coding on the first UCI according to the resources occupied by the first UCI to obtain a coded bit sequence of the first UCI , and perform channel coding on the second UCI according to the resources occupied by the second UCI to obtain the coded bit sequence of the second UCI; the coded bit sequence of the first UCI and the coded bit sequence of the second UCI are The bit sequence is mapped to the physical uplink channel for transmission to the base station. In the method, user equipment, and base station of the embodiments of the present invention, by independently encoding the first UCI and the second UCI, resources corresponding to the first UCI and the second UCI can be allocated according to the performance target requirements of different UCIs, ensuring that different UCIs achieve The respective performance targets are required, while avoiding increasing the transmit power according to the UCI with the highest performance requirements, thereby improving the power utilization efficiency.

Description

technical field [0001] The embodiments of the present invention relate to the field of wireless communication, and more specifically, to a method for transmitting control information, a user equipment, and a base station. Background technique [0002] LTE-A (Long Term Evolution-Advanced, Advanced Long Term Evolution) is a further evolution and enhanced system of the LTE system. In the LTE-A system, in order to meet the peak data rate requirements of the International Telecommunication Union for the fourth-generation communication technology, Carrier Aggregation (CA, Carrier Aggregation) technology, also known as Spectrum Aggregation (Spectrum Aggregation) technology or Bandwidth Extension (Bandwidth Extension) was introduced. technology. In carrier aggregation, the frequency spectrum of two or more component carriers (Component Carrier) is aggregated together to obtain a wider transmission bandwidth. The spectrum of each component carrier can be adjacent continuous frequenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L5/0053H04L1/0073H04L1/0026H04L1/0031H04L1/0057H04L1/0059H04L1/1671H04W72/542H04L5/0055
Inventor 成艳吕永霞
Owner HUAWEI TECH CO LTD
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