A method and device for transmitting information on a physical uplink control channel

Abstract

The present invention discloses a method and a device for transmitting information on a physical uplink control channel (PUCCH). The method includes the following steps: a user equipment (UE) selects information from channel state information (CSI) to transmit (S1); the information selected from the CSI is transmitted on the PUCCH with one or both of hybrid automatic retransmission acknowledgment information and a scheduling request (S2), which enables a base station to obtain not only the information in the CSI but also one or both of the hybrid automatic retransmission acknowledgement information and the scheduling request from the PUCCH. The present invention avoids the problem of system downlink throughput degradation caused by dropping all CSI by the UE in the prior art, and avoids the problem that system downlink throughput is influenced by unnecessary data retransmission on a downlink carrier caused by ACK / NACK bundling among carriers.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for transmitting information on a Physical Uplink Control Channel (PUCCH, Physical Uplink Control Channel). Background technique [0002] Long Term Evolution-Advanced (LTE-A, Long Term Evolution-Advanced) is a further evolution and enhanced system of the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) LTE system. In the LTE-A system, a Carrier Aggregation (CA, Carrier Aggregation) technology is introduced to meet the peak data rate requirements of the International Telecommunication Union for the fourth-generation communication technology. In carrier aggregation, the spectrum of two or more component carriers (Component Carrier) is aggregated together to obtain a wider transmission bandwidth, where each component carrier can be configured to be compatible with the LTE system, and each component carrier Carriers have an indepe...

AI Technical Summary

Problems solved by technology

[0007] In the study of the existing technology 2, it is found that under the carrier aggregation of the LTE-A system, there is a scenario where the channel correlation of the aggregated multiple downlink carriers is low, and the channel correlation of the two carriers is low when the two downlink carriers The correlation between right and wrong transmission of data transmitted on the Internet is low, so the probability of right data transmission on one carrier and wrong data transmission on the other carrier is high, and the ACK / NACK of these two carriers is always checked. In the case of bundling, the result is always NACK, so the data on both downlink carriers needs to be retransmitted

Therefore, always bundling ACK / NACK information will affect the downlink throughput of the system, and also increase the overhead of system resources because of the need for unnecessary retransmission of the already transmitted downlink data

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