Allocation method and terminal equipment of search space channel estimates

Abstract

The invention discloses an allocation method of search space channel estimation number and terminal equipment, and the method comprises the steps: carrying out the first distribution of a channel estimation number corresponding to a search space of the terminal equipment if the sum of the channel estimation numbers required by all search spaces of the terminal equipment exceeds the maximum channelestimation number supported by the terminal equipment; wherein the sum of the channel estimation numbers required by all the search spaces is smaller than or equal to the maximum channel estimation number supported by the terminal equipment after the terminal equipment performs the first distribution. According to the embodiment of the invention, the channel estimation number corresponding to thesearch space is reallocated when the channel estimation number required by the terminal equipment is over-booked; therefore, the sum of the channel estimation numbers needed by all the search spacesis smaller than or equal to the maximum channel estimation number supported by the terminal equipment, the processing capacity of the terminal equipment can be fully utilized, control resource distribution is maximized, the control channel distribution blocking probability is reduced, and meanwhile it is guaranteed that the maximum channel estimation number of the terminal equipment is not exceeded.

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...

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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

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