Signal Reception Apparatus Beam Alignment via Reference Time Domain Resources
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In new radio (NR) systems, the mismatch between transmission and reception beams due to indefinite time-domain resource boundaries leads to reliability issues in signal transmission, causing losses in transmission quality.
Innovation Solution
A signal reception apparatus and method that determines the starting position of time domain resources based on a predefined or preconfigured reference time domain resource section, ensuring uniformity in receiving beams between network devices and terminal equipment, thereby avoiding beam mismatch and ensuring transmission reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming technique is used to compensate for fading, then transmission quality is improved, but beam mismatch between network device and terminal equipment occurs due to indefinite time-domain resource boundaries, causing loss of transmission reliability
Solution Approach 1:
The patent applies preliminary action by pre-configuring time-domain resource boundaries and beam correspondence relationships before actual signal transmission. The network device and terminal equipment establish agreed-upon time-domain resource sections and beam mappings in advance, so that when transmission occurs, both parties already have synchronized beam configurations, eliminating beam mismatch caused by indefinite boundaries.
2Reliability
If multiple beams are transmitted simultaneously for physical channels, then transmission reliability is improved, but complexity of beam management increases due to need for beam sweeping and coordination between network device and terminal equipment
Solution Approach 1:
The patent applies homogeneity by establishing uniform beam correspondence relationships across multiple time-domain resources. Instead of independently managing beams for each physical channel or time resource, the system uses consistent beam configurations and selection criteria across all resources, simplifying beam management while maintaining reliability through coordinated multi-beam transmission.
3Measurement precision
If beam sweeping is performed at receiver end and transmitter end to obtain optimal beam combination, then beam quality is improved, but time consumption increases due to extensive beam measurement and selection processes
Solution Approach 1:
The patent applies preliminary action by performing beam sweeping and quality measurement in advance during initial access and connection establishment phases. The network device and terminal equipment complete comprehensive beam measurements and select optimal beam combinations before actual data transmission begins, storing these configurations for reuse across multiple time-domain resources, thereby reducing time consumption during ongoing transmission while maintaining high measurement precision.
Data Source
AI summary
A terminal includes a memory, and processor circuitry coupled to the memory and configured to receive a first signal including first control information at a first time domain resource section according to an assumption that a network device uses a first transmission configuration indication (TCI) state, the first signal being physical downlink control channel (PDCCH), the first control information being downlink control information (DCI), and receive a second signal at a second time domain resource section according to an assumption that the network device uses a second transmission configuration indication state, a starting position of the second time domain resource section being determined according to a reference time domain resource section, the reference time domain resource section being a time domain symbol at a last position in the PDCCH where the DCI is located on a time axis.