Physical downlink control channel candidate position determination method, terminal and network equipment

Abstract

The invention provides a physical downlink control channel candidate position determination method, a terminal and network equipment, and relates to the technical field of communication. The method for determining the position of the physical downlink control channel candidate is applied to a terminal, and comprises the following steps: sending terminal capability information to network equipment,the terminal capability information comprising the capability of whether the terminal supports more than a preset number of CORESETs and / or the capability of whether the terminal supports at least two TRPs; obtaining an initial offset value of a PDCCH candidate position in the search space of each CORESET; and determining the position of the PDCCH candidate in the search space of each CORESET according to the initial offset value. According to the scheme, the probability that the search spaces of different terminals conflict with each other in different CORESETs can be reduced, the PDCCH blocking probability of the terminals is reduced, and then the communication reliability is ensured.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for determining the position of a physical downlink control channel candidate, a terminal and a network device. Background technique [0002] In the New Radio (NR) system of Rel-15, a single bandwidth part (bandwidth part, BWP) of a user equipment (User Equipment, UE) supports configuration of up to 3 control resource sets (Control resource set, CORESET). In order to support PDCCH transmission through multiple transmission and reception points (Transmission and Reception Point, TRP) and multiple different beams (beams), the UE will need to support configuration of more CORESETs. [0003] However, an increase in the number of CORESETs will increase the probability that search spaces of different UEs will collide with each other in different CORESETs, resulting in an increased probability of PDCCH blocking (blocking) of the UE. The PDCCH candidates of diffe...

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Problems solved by technology

[0004] The embodiment of the present invention provides a method for determining the position of a physical downlink control channel candidate, a terminal, and a network device, so as to solve the problem that the existing Rel-15 NR system only supports independent pseudo-random numbers between a maximum of 3 CORESETs in a BWP. When the number of CORESETs in a BWP is greater than 3, it will cause multiple CORESETs to use the same pseudo-random number, which will increase the probability that the search spaces of different terminals will conflict with each other in different CORESETs, resulting in an increase in the probability of PDCCH blocking of the terminal. The problem that communication reliability cannot be guaranteed

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