A detection method and device for a physical downlink control channel

Abstract

The present application provides a physical downlink control channel detection method, which is applied to user terminals in the new wireless NR system. The method includes: according to the total number of control channel elements CCE in the control resource set CORESET occupied by the physical downlink control channel PDCCH, Determine the available aggregation levels; determine the number of candidate sets corresponding to the available aggregation levels according to the candidate set selection rules corresponding to the search space type; select each of the available aggregation levels and the number of candidate sets corresponding to the available aggregation levels in turn, and perform The PDCCH is blindly detected until the blind detection is successful; the downlink control information DCI corresponding to the aggregation level and the number of candidate sets in this blind detection is acquired. The invention supports flexible and diverse configurations of the NR system, is easy to implement, and achieves better detection effect with lower complexity.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, and more particularly, to a method and device for detecting a physical downlink control channel. Background technique [0002] 5G is the focus of research and development in the communications industry in recent years. 5G will meet the requirements of 20Gbit / s fiber-like access rate, millisecond-level latency service experience, connection capability of hundreds of billions of devices, ultra-high traffic density and connection density, and a hundred-fold network. Energy efficiency improvement and other extreme indicators, how a system can meet diverse business needs at the same time, 5G system design faces new challenges. [0003] At present, most of the existing PDCCH blind detection methods are suitable for the LTE system, but not for the NR system. In the NR system, due to the large bandwidth of the system, if the PDCCH still occupies the entire bandwidth, it will not on...

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Problems solved by technology

[0003] At present, most of the existing PDCCH blind detection methods are suitable for LTE systems, but not for NR systems. In NR systems, due to the large bandwidth of the system, if the PDCCH still occupies the entire bandwidth, it will not only waste resources, but also increase the complexity of blind detection. also big

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