Transmission method and transmission device for feedback information

Abstract

The embodiment of the invention provides a transmission method for feedback information, which comprises the following steps that: a base station sets control signaling VDAIDL for downlink control information carried by user equipment (UE) in physical downlink control channels (PDCCH) of all scheduling physical downlink share channels (PDSCH) or / and PDCCHs indicating semi-persistent scheduling (SPS) resource release in a feedback window, allocates a control information modulation and coding scheme (MCS) offset value beta offset HARQ-ACK to the UE in a semi-static state and informs the UE of the offset value through high-level signaling; and the base station receives acknowledgement / negative acknowledgement (ACK / NACK) feedback information sent by the UE through a physical uplink share channel (PUSCH) according to VDAIDL and the beta offset HARQ-ACK and performing corresponding processing. According to the scheme provided by the invention, a method for ACK / NACK multiplexing of a long term evolution time division duplex (LTE TDD) system can be expanded, so that the method for the feedback information can be applied to LTE / LTE-A, and the problem of multiple ACK / NACK feedbacks caused by carrier aggregation can be solved simultaneously. In addition, in the scheme provided by the invention, the change of the conventional system is small, the compatibility of the system cannot be influenced, and the scheme is simply and efficiently realized.

Description

technical field [0001] The present invention relates to the field of digital communication, in particular, the present invention relates to a transmission method and transmission device for feedback information. Background technique [0002] Mobile and broadband have become the development direction of modern communication technology. 3GPP (3rd Generation Partnership Project) is committed to the evolution of LTE (Long Term Evolution, long-term evolution) system as a 3G system. The goal is to develop 3GPP wireless access technology towards Evolution for high data rate, low latency and optimized packet data applications. [0003] The LTE system uses HARQ to improve the reliability of data transmission. When the downlink HARQ function is enabled, the UE decodes the received downlink data packets. If the decoding is correct, it will feed back ACK to the base station. If the decoding fails, it will feed back to the base station. NACK, requesting the base station to retransmit th...

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Problems solved by technology

[0011] Considering the compatibility with the LTE Rel-8 system, the multiple ACK / NACK feedback problem caused by carrier aggregation in the LTE-A system can reuse the idea of ​​ACK / NACK multiplexing similar to LTE TDD. If the ACK of LTE TDD is used / NACK multiplexing scheme, when the PUSCH for ACK / NACK transmission does not have corresponding PDCCH DCI Format 0 scheduling information, the physical resource size for ACK / NACK transmission on the PUSCH will be calculated according to the size of the entire feedback window, so Will take up a lot of PUSCH resources

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