Wireless Communication CORESET Beam Management via Quasi-Co-Location
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Solution Overview
Problem
The existing wireless communication systems, particularly in the new radio (NR) system, lack a solution for efficiently transmitting response messages carrying identification information of downlink signals in a manner that optimizes beam management.
Innovation Solution
A method and device for transmitting a response message that includes identification information of a downlink signal, where a terminal determines a control resource set (CORESET) based on quasi-co-location with other signals for spatial received parameters, and sends an uplink message with identification information to a network device, which then responds using the determined CORESET.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a terminal reports beam management information in a new radio system, then beam identification capability is improved, but there is no established procedure for transmitting the response message efficiently
Solution Approach 1:
The patent applies the copying principle by reusing the uplink resource indication value (URI) mechanism originally designed for other purposes and adapting it to indicate downlink beam information. Instead of creating a completely new reporting mechanism, the terminal copies the existing URI field usage and repurposes it to carry beam identification information, thereby simplifying the procedure while maintaining precision.
2Reliability
If the network device sends downlink signals through multiple transmit beams, then coverage and signal quality are improved, but the complexity of managing and responding to beam information increases
Solution Approach 1:
The patent applies universality by designing a multi-functional uplink resource indication value that serves both its original purpose and the additional function of indicating downlink beam information. This single field performs multiple roles: resource allocation and beam identification, thereby reducing the need for separate dedicated fields and procedures, which would increase complexity.
3Productivity
If a terminal determines CORESET based on quasi-co-location with other signals, then resource allocation efficiency is improved, but the requirement for signal correlation increases system constraints
Solution Approach 1:
The patent applies parameter changes by utilizing the quasi-co-location parameter relationship between synchronization signals and other downlink signals. By changing the configuration parameter to establish QCL relationships, the system enables the terminal to determine CORESET resources efficiently based on these pre-established signal correlations, thereby improving resource allocation without requiring entirely new configuration mechanisms.
Data Source
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AI summary
Embodiments of this application provide a wireless communications method and a device. The method includes: receiving (310), by a network device, a first uplink message, wherein the first uplink message includes identification information of a first signal, and the first signal includes a channel state information reference signal, CSI-RS, or a synchronization signal block; determining (320), by the network device, a first control resource set, CORESET according to a correspondence between the first signal and the first CORESET; and sending (330), by the network device, a first response message responding to the first uplink message, on the first CORESET.