MBS CORESET Configuration for Multi-Beam Scheduling
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Solution Overview
Problem
Current wireless communication systems, particularly 5G NR, face challenges in efficiently scheduling Multicast/Broadcast Service (MBS) data on beam-based control channels, especially in multi-beam operations, which affects data delivery and reception efficiency.
Innovation Solution
The method involves a User Equipment (UE) receiving system information from a Base Station (BS) to determine Control Resource Sets (CORESET) configurations for both Multicast Control Channels (MCCH) and Multicast Traffic Channels (MTCH), allowing for the scheduling of MBS-specific CORESET groups across multiple beams, enabling efficient data delivery for multiple MBS sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple CORESET configurations are used for MCCH and MTCH scheduling in multi-beam operations, then scheduling flexibility and MBS service reliability are improved, but device complexity and configuration management difficulty increase
Solution Approach 1:
The patent segments the control channel scheduling by creating separate CORESET configurations for MCCH (Multicast Control Channel) and MTCH (Multicast Traffic Channel). Each CORESET is associated with specific beams, allowing independent optimization and management of control and data channels while maintaining overall system reliability through distributed beam configurations.
Solution Approach 2:
The patent introduces beam dimension to the traditional single-CORESET scheduling approach. By configuring multiple CORESETs across different beams (spatial dimension), the system achieves improved reliability through spatial diversity without fundamentally changing the control channel structure, thus managing complexity through dimensional expansion rather than structural complexity.
2Productivity
If beam-based scheduling is implemented for MBS data, then data delivery efficiency is improved, but system complexity and scheduling overhead increase
Solution Approach 1:
The patent applies local quality by associating specific CORESET configurations with specific beams based on local channel conditions and service requirements. Each beam can have optimized CORESET parameters tailored to its coverage area and traffic characteristics, improving data delivery efficiency locally while the overall system manages complexity through modular, localized configurations rather than global complexity.
Data Source
AI summary
A method for MBS acquisition is provided. The method includes receiving system information from a BS; determining a first CORESET configuration and a second CORESET configuration according to the system information, the first CORESET configuration determining a first set of CORESETs scheduling at least one MCCH, the second CORESET configuration determining a second set of CORESETs scheduling a plurality of MTCHs; receiving an MCCH message on the at least one MCCH provided through a first beam of a plurality of beams associated with the BS; and determining, according to the second CORESET configuration and the MCCH message, a plurality of MBS-specific CORESET groups in the second set of CORESETs, wherein each of the plurality of MBS-specific CORESET groups corresponds to a respective MBS session and includes at least two CORESETs configured to be provided through at least two different beams of the plurality of beams. A UE using the method is also provided.