Communication method and communication device

Abstract

Disclosed are a communication method and a communication device, and the communication method comprises the steps that a terminal receives the configuration information for indicating a first time-frequency resource from a network device, and downlink control information for indicating a second time-frequency resource, wherein the first time-frequency resource cannot be used for transmitting a downlink data channel and a demodulation reference signal of the downlink data channel, the second time-frequency resource comprises a resource used for transmitting the downlink data channel and the demodulation reference signal of the downlink data channel, and when the terminal determines that the time-domain resource of the first time-frequency resource comprises the time-domain resource of the second time-domain resource, the downlink data channel and the demodulation reference signal of the downlink data channel are received on the third time-frequency resource. The third time-frequency resource is a resource which is not overlapped with the first time-frequency resource in the second time-frequency resource, so that the channel estimation complexity of the terminal can be reduced. In addition, the terminal can receive, for example, a PDCCH in the first time-frequency resource, and the scheduling opportunity of the PDCCH can be increased.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular, to a communication method and a communication device. Background technique [0002] In the communication system, the network side device can send downlink control information (DCI) to the terminal side device through the physical downlink control channel (physical downlink control channel, PDCCH). Uplink scheduling information for transmitting data in a physical uplink shared channel (PUSCH), or downlink scheduling information for scheduling a terminal-side device to receive a physical downlink shared channel (PDSCH). [0003] In a new radio (new radio) system, resources that cannot be used to send the PDSCH are defined, and such resources are also called rate matching resources. In order to reduce the complexity of channel estimation of the terminal-side device, the existing protocol stipulates that the rate matching resource cannot overlap with the demodulati...

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Problems solved by technology

[0004] However, the rate matching resources that cannot be used to transmit PDSCH may include resources that can be used to transmit PDCCH. If the provisions of the existing protocol are followed, that is, if a PDCCH candidate resource overlaps with the rate matching resource, the terminal side device will not detect the PDCCH candidate. resources, it will obviously reduce the scheduling opportunities of PDCCH, and the resource utilization rate is low

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