Information transmission method and communication device

Abstract

The invention provides an information transmission method and a communication device. The method comprises the following steps: determining a corresponding relationship between a first aggregation level AL set associated with a plurality of first PDCCH candidates and a second AL set associated with a plurality of second PDCCH candidates, wherein the corresponding relationship is a corresponding relationship between at least one first AL in the first AL set and at least one second AL in the second AL set; and detecting at least one first PDCCH candidate in the plurality of first PDCCH candidates and/or at least one second PDCCH candidate in the plurality of second PDCCH candidates according to the corresponding relationship. When a plurality of DCIs are detected, the AL corresponding to theDCI to be detected can be determined according to the corresponding relationship between the ALs corresponding to the plurality of DCIs, and the DCI is detected in the PDCCH candidates correspondingto the AL, so that the DCI blind detection complexity is reduced.

Description

technical field [0001] The present application relates to the communication field, and more specifically, to an information transmission method and a communication device. Background technique [0002] In the multi-site coordinated transmission mode, the terminal device needs to detect multiple downlink control information (DCI) in the same detection period. When a terminal device detects DCI, it performs blind detection of DCI on multiple PDCCH candidates (PDCCH candidates). Due to the limitation of the terminal device's own capabilities, the number of PDCCH candidates that a terminal device can detect when performing blind PDCCH candidate detection is limited. . When a terminal device needs to detect multiple DCIs, it needs to perform blind DCI detection on all possible PDCCH candidate positions of the multiple DCIs, and the terminal device has high complexity in performing DCI blind detection. How to reduce the complexity of blind detection of multiple DCIs has become a...

AI Technical Summary

Problems solved by technology

When a terminal device detects DCI, it performs blind DCI detection on multiple PDCCH candidates (PDCCH candidates). Due to the limitation of the terminal device's own capabilities, the number of PDCCH candidates that a terminal device can detect when performing blind detection of PDCCH candidates is limited.

When a terminal device needs to detect multiple DCIs, it needs to perform blind DCI detection on all possible PDCCH candidate positions of the multiple DCIs, and the terminal device has a high complexity in performing DCI blind detection

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