CORESET Group Index Determination for Multi-PDCCH Transmission
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Solution Overview
Problem
The existing multiple-PDCCH based transmission scheme faces challenges in utilizing CORESET #0 effectively, as it is impossible to simultaneously configure a group index for CORESET #0 and other CORESETs through a single radio resource control (RRC) signaling.
Innovation Solution
A communication method that involves receiving first configuration information to configure one or more CORESETs without including CORESET #0, determining the group index of CORESET #0, and receiving a PDSCH scheduled by scheduling information transmitted on the configured CORESETs and/or CORESET #0.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single RRC signaling is used to configure group indices for multiple CORESETs, then the configuration process is simplified, but it is impossible to simultaneously configure group index for CORESET #0 and other CORESETs
Solution Approach 1:
The configuration process is divided into two stages: first, RRC signaling configures group indices for non-#0 CORESETs; second, a separate mechanism (search space configuration or DCI indication) determines the group index for CORESET #0. This segmentation allows independent configuration of each CORESET's group index while maintaining system simplicity.
Solution Approach 2:
The patent applies preliminary action by pre-configuring group indices for non-#0 CORESETs through RRC signaling before the terminal device determines the group index for CORESET #0. This allows the terminal to prepare configuration information in advance while the special case of CORESET #0 is handled through a separate determination mechanism.
2Area of stationary object
If multiple-PDCCH based transmission scheme is implemented, then signal coverage is increased, but the complexity of distinguishing and processing scheduling information from different CORESETs increases
Solution Approach 1:
Different CORESETs are assigned different group indices to enable distinction between their scheduling information. The terminal device processes scheduling information from different CORESETs differently based on their group indices, allowing localized differentiation while maintaining overall system functionality.
Solution Approach 2:
The group index acts as an intermediary parameter that mediates between different CORESETs and the terminal device's processing mechanisms. By introducing this intermediate identifier, the system can distinguish and route scheduling information from different CORESETs to appropriate processing paths without direct complex interactions between all CORESETs.
Data Source
AI summary
Embodiments of the present application disclose a communication method, comprising: receiving first configuration information for configuring one or more CORESETs, wherein at least one of the one or more CORESETs is configured with a corresponding group index, and the one or more CORESETs do not include CORESET #0; determining a group index of CORESET #0; and receiving, according to scheduling information transmitted over CORESET #0 and/or scheduling information transmitted over the one or more CORESETs, PDSCHs scheduled by means of the scheduling information. The terminal device determines the group index of CORESET #0 and/or the group index of the one or more CORESETs, such that the group indexes can be used to distinguish between scheduling information transmitted over different CORESETs, thereby enabling receipt of PDSCHs scheduled by means of the scheduling information transmitted over the different CORESETs, and achieving a multi-PDCCH-based transmission solution.