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Location determination method, terminal, medium and network device for physical downlink control channel candidates

A technology of physical downlink control and determination method, applied in the field of communication, can solve the problems of increased PDCCH blocking probability of terminals, inability to guarantee communication reliability, and increased probability of mutual conflict, so as to reduce the blocking probability and ensure communication reliability. , the effect of reducing the probability of conflict

Active Publication Date: 2021-06-08
VIVO MOBILE COMM CO LTD
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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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  • Location determination method, terminal, medium and network device for physical downlink control channel candidates
  • Location determination method, terminal, medium and network device for physical downlink control channel candidates
  • Location determination method, terminal, medium and network device for physical downlink control channel candidates

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] When describing the embodiments of the present invention, some concepts used in the following description are explained first.

[0035] The fifth generation (5Generation, 5G) New Radio (New Radio, NR) system of Rel-15 supports flexible physical downlink control channel (Physical Download Control Channel, PDCCH) resource allocation, and no longer reuses the same PDCCH in the entire cell , instead, each user equipment (User Equipment, UE) may independently configure a control resource set (Control resource set, CORESET) for monitoring the PDCCH. CORESET contains configuration information of independent time domain, frequency domain and air domain resources. At the same time, the 5G NR system supports configuring multiple search space sets for ...

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Abstract

The invention provides a method for determining the position of a physical downlink control channel candidate, a terminal and a network device, and relates to the technical field of communication. The method for determining the location of a physical downlink control channel candidate is applied to a terminal, and includes: sending terminal capability information to a network device, where the terminal capability information includes: whether the terminal supports a capability exceeding a preset number of CORESETs and / or whether it supports at least The ability to receive two TRPs; obtain the start offset value of the PDCCH candidate position in the search space of each CORESET; determine the position of the PDCCH candidate in the search space of each CORESET according to the start offset value. The above solution can reduce the probability that the search spaces of different terminals collide with each other in different CORESETs, reduce the PDCCH blocking probability of the terminal, and thus ensure communication reliability.

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 at most 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 dif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/24H04W24/04
CPCH04W8/24H04W24/04
Inventor 纪子超
Owner VIVO MOBILE COMM CO LTD
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