Allocation method and terminal equipment for channel estimation in search space

Abstract

The present invention discloses a search space channel estimation number allocation method and a terminal device. The method includes: if the channel estimation number required by the target unit search space of the terminal device exceeds the first channel estimation number, corresponding to the target unit search space The channel estimates are redistributed, wherein the first channel estimates are the channel estimates configured by the network side device for the target unit search space or the maximum channel estimates supported by the terminal device; after the redistribution, the target unit search space The sum of the second channel estimates is less than or equal to the first channel estimates. In the embodiment of the present invention, by redistributing the channel estimates corresponding to the target unit search space, the processing capability of the terminal equipment can be fully utilized, the allocation of control resources can be maximized, the probability of blocking the allocation of control channels can be reduced, and at the same time, it can be guaranteed not to exceed the network The number of channel estimates configured by the side device or the maximum number of channel estimates supported by the terminal device.

Description

technical field [0001] The present invention relates to the communication field / terminal field, and in particular to a search space channel estimation number allocation method and terminal equipment. Background technique [0002] In a Long Term Evolution (Long Term Evolution, LTE) system, a user equipment (User Equipment, UE) only monitors one physical downlink control channel (physical downlink control channel, PDCCH) channel. In the PDCCH, the UE blindly detects PDCCH candidates in a fixed search space, tries to demodulate downlink control information (DCI), and the total number of blindly detected PDCCH candidates is determined. The PDCCH uses a Cell-specific reference signal (CRS) for channel estimation. Since the CRS is cell-specific, the UE's channel estimation complexity does not increase linearly with the number of blind detections. [0003] The 5G NR system supports configuring multiple control resource sets (CORESET) and multiple search spaces for the UE, and fle...

AI Technical Summary

Problems solved by technology

[0005] If the search space is configured according to the number of channel estimates required in the worst case (that is, assuming that the CCEs allocated by candidates of different ALs will never overlap), although it can ensure that the maximum number of channel estimates supported by the UE is not exceeded, it will greatly reduce the allowed The configured number of blind detections will cause the system to use far less than the maximum number of channel estimates supported by the UE.

This allocation method cannot make full use of the UE's capabilities, greatly reduces the utilization rate of system control resources, and increases the probability of control channel allocation blocking

Images