Method for receiving reference signal, method for transmitting reference signal, and device

Abstract

The invention provides a method for receiving a reference signal, a method for sending the reference signal and a device. The method for receiving the reference signal comprises the following steps: when terminal equipment is out of a first time period, the terminal equipment detects a first signal and determines whether to use the first reference signal to perform time-frequency tracking and/or channel measurement according to a detection result of the first signal; when the terminal equipment is in a first time period, the terminal equipment receives a second reference signal, wherein the first reference signal and the second reference signal are reference signals used for time-frequency tracking and/or channel measurement. According to the method and the device, the utilization rate ofthe TRS resources can be improved, and the overhead of the TRS signals is reduced, so that the power consumption of the terminal equipment is reduced.

Description

technical field [0001] The present application relates to the communication field, and more specifically, to a method for receiving a reference signal, a method for sending a reference signal, a wireless communication device, and a communication device. Background technique [0002] In order to reduce the power consumption of the terminal device, a discontinuous reception (DRX) technology is proposed, that is, in the DRX mode, the terminal device can periodically enter the sleep state (sleep mode) at certain periods of time without monitoring The time slot that carries the physical downlink control channel (PDCCH), and needs to be monitored, "wake up" from the sleep state, so that the UE can achieve the purpose of power saving. [0003] Moreover, in order to track and compensate for changes (or offsets) in time and frequency, a tracking reference signal (TRS, tracking reference signal) technology is proposed, that is, the access device can send a TRS to the terminal device, ...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the transmission of the TRS is periodic and is not affected by the DRX mechanism, that is, it is possible that the transmission time of the TRS is not within the "Active Time" (Active Time) of the DRX of the terminal device , the UE may be in a sleep state at this time. In this case, even if the terminal device does not need to monitor the PDCCH, it still needs to wake up from sleep to receive TRS, which increases the power consumption of the terminal device.

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