CORESET #0 Configuration for High-Band Standalone NR Synchronization
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Solution Overview
Problem
Existing wireless communication systems face challenges in enhancing standalone operation for higher frequency ranges, particularly in designing synchronization raster and CORESET #0 configurations for frequency bands beyond 52.6 GHz to 71 GHz, where existing subcarrier spacings like 120 kHz and 240 kHz are insufficient, and new spacings such as 480 kHz and 960 kHz are needed.
Innovation Solution
The proposed solution involves determining a set of configurations for CORESET #0, including subcarrier spacing, multiplexing patterns, and frequency offsets between the SS/PBCH block and CORESET #0, tailored for higher frequency ranges using existing and new subcarrier spacings to optimize synchronization and control channel operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing subcarrier spacings (120 kHz and 240 kHz) are used for higher frequency bands, then device complexity is reduced, but synchronization and control channel performance deteriorates
Solution Approach 1:
The patent introduces new subcarrier spacing values (480 kHz and 960 kHz) specifically for higher frequency bands (52.6 GHz to 71 GHz), changing the parameter of subcarrier spacing to adapt to the requirements of millimeter-wave and higher frequency operations, thereby improving synchronization and control channel performance
Solution Approach 2:
The patent segments the frequency band handling by applying different subcarrier spacing configurations to different frequency ranges: existing spacings (120 kHz, 240 kHz) for lower bands and new spacings (480 kHz, 960 kHz) for higher bands above 52.6 GHz, allowing optimized performance for each segment
2Reliability
If new subcarrier spacings (480 kHz and 960 kHz) are introduced for higher frequency bands, then synchronization and control channel performance is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic configuration of subcarrier spacing based on frequency band detection, where the system automatically selects appropriate spacing values (120 kHz, 240 kHz, 480 kHz, or 960 kHz) depending on the operating frequency, enabling adaptive optimization without manual intervention
Solution Approach 2:
The patent creates a universal configuration framework that handles both existing and new subcarrier spacings through a unified set of CORESET #0 configuration parameters, allowing the same configuration mechanism to serve multiple frequency bands and spacing types
3Adaptability or versatility
If frequency offset between CORESET #0 and SS/PBCH block is increased, then multiplexing flexibility is improved, but interference between channels increases
Solution Approach 1:
The patent applies different frequency offset configurations locally to different multiplexing patterns and frequency bands, optimizing the offset values based on specific operational requirements rather than using a fixed universal offset, thereby achieving flexibility without excessive interference
Data Source
AI summary
Apparatuses and methods for enhancement to standalone operation for higher frequency range in a wireless communication system. A method includes receiving a synchronization signals and physical broadcast channel (SS/PBCH) block and determining a set of configurations for a control resource set (CORESET #0) to receive a Type0 physical downlink control channel (Type0-PDCCH). The set of configurations includes a multiplexing pattern between the CORESET #0 and the SS/PBCH block; a number NRRBCORESET #0 of resource blocks (RBs) for the CORESET #0; a number NsymbolCORESET #0 of symbols for the CORESET #0; and a frequency offset between the CORESET #0 and the SS/PBCH block. For a first multiplexing pattern between the CORESET #0 and the SS/PBCH block, the frequency offset between the CORESET #0 and the SS/PBCH block is determined as one of 0, NRBCORESET #0−NRBSSB, or (NRBCORESET #0−NRBSSB)/2. The method further includes receiving the Type0-PDCCH based on the set of configurations for the CORESET #0 over a downlink channel.