Downlink control information blind detection instruction transmission and downlink control information blind detection method in LTE/Lte‑a system

Abstract

The invention provides a downlink control information blind test indication sending method in an LTE / LTE-A system. The method comprises steps that: residential user data and downlink control information are scheduled, and a residential physical downlink control domain time domain span is determined; the number of residential physical downlink control domain idle resources and the time frequency resource position are determined; whether the number of the residential physical downlink control domain idle resources is smaller than a preset value is determined, if no, continues; if yes, ends; residential downlink control information blind test indication is generated; channel coding for the residential downlink control information blind test indication is carried out to generate a code word; physical downlink control information blind test indication channel processing on the code word is carried out. The invention further provides a downlink control information blind test method in the LTE / LTE-A system. According to the methods, physical downlink control domain idle CCH-RE is utilized to sent the downlink control information blind test indication, so downlink control information blind test efficiency of a terminal is improved while system time frequency resource cost and signaling cost do not increase.

Description

technical field [0001] The present invention relates to a method for sending a downlink control information blind detection instruction and a downlink control information blind detection method in a wireless communication system, in particular to a method for sending a downlink control information blind detection instruction and downlink control information blind detection in an LTE / LTE-A system method. Background technique [0002] In the LTE / LTE-A system, downlink control information (Downlink Control Information, DCI for short) is mainly used to transmit uplink and downlink scheduling information, uplink power control instructions and the like. The DCI may support multiple downlink control information formats and multiple control channel element (Control Channel Element, CCE for short) aggregation levels and candidate positions in multiple search spaces. The above information is unknown to the terminal side, so it is necessary to obtain the downlink control information s...

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a blind detection instruction transmission of downlink control information and a method for blind detection of downlink control information in the LTE / LTE-A system, which is used to solve the problem of downlink control information in the prior art. Blind detection of problems with high complexity and low efficiency

Images