Communication method, terminal device and network device

Abstract

The present application provides a communication method, including: a terminal device receives configuration information, the configuration information is used to configure M component carriers, and M is a positive integer; the terminal device determines N types of DCI according to the configuration information size; if the N is greater than the first threshold, the terminal device determines Q types of DCI sizes, and detects the downlink control channel in the first time unit according to the Q types of DCI sizes, and the Q is less than or equal to the first a threshold. The communication method provided by the present application can make full use of the ability of the terminal device to detect the DCI size.

Description

technical field [0001] The embodiments of the present application relate to the communication field, and more specifically, relate to a communication method, a terminal device, and a network device. Background technique [0002] In a next-generation communication system, when a terminal device detects a physical downlink control channel (Physical downlink control channel, PDCCH), it needs to perform multiple detections. As the search space set configured by the network device and the number of different DCI sizes increase, the complexity of detecting the PDCCH by the terminal device increases. [0003] In order to limit the number of detections by the terminal device, within a given time slot of a Component Carrier (CC) unit, a maximum number of different downlink control information sizes (Downlink control information size, DCI size) detected by the terminal device is preset. The number of different DCI sizes detected by the terminal device on the CC configured with cross ...

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Problems solved by technology

[0004] In the prior art, in order to make the number of different DCI sizes detected by the terminal device on the CC configured with cross component carrier scheduling not exceed the set maximum number of different DCI sizes detected by the terminal device on the CC, for a certain DCI format (for example, DCI format 1_1), add a certain number of bits to all the different DCI sizes of the DCI format, so that the DCI size after the increased number of bits is equal to the DCI size with the largest DCI size among all DCI sizes, The existing method may increase the number of bits, resulting in waste of resources, affecting the overall performance of the system, and cannot fully utilize the ability of the terminal device to detect the size of the DCI

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