Transmission method and transmission device for feedback information

Abstract

A feedback information transmission method includes the following steps: for a User Equipment (UE) and in a feedback window, a base station first sets a control signal V DL DA I in a downlink control information message carried in all Physical Downlink Control Channels (PDCCH) that schedule Physical Downlink Shared Channels (PDSCH) and / or all PDCCHs that instruct Semi-persistent Scheduling (SPS) resource release; then semi-statically allocates an offset value ß HARQ-ACK offset for a Modulation and Coding Scheme (MCS) control information for the UE; then notifies the UE of said offset value via a high-layer signaling. On the basis of said V DL DA I and ß HARQ-ACK offset, the base station receives Acknowledgement / Negative-Acknowledgement (ACK / NACK) feedback information transmitted through a Physical Uplink Shared Channel (PUSCH) by the UE, and processes said ACK / NACK feedback information. With the technical solutions of the present invention, by expanding the ACK / NACK multiplexing method of a Long Term Evolution (LTE) Time Division Duplex (TDD) system, the feedback information transmission method can very easily be applied to a LTE / LTE-A system while also solving the problems of multiple ACK / NACK feedback that result from carrier aggregation technology. The present solutions require only minimal changes to existing systems, will not affect system compatibility, and can be implemented simply and effectively.

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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