PDSCH Beam Clustering for 5G NR Resource Allocation

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Solution Overview

Problem

Current wireless communication systems, particularly in 5G NR, face challenges in efficiently managing and coordinating the parameters of Physical Downlink Shared Channels (PDSCHs) across multiple beams, leading to inefficiencies in resource allocation and synchronization, especially in higher frequency bands where beam switching gaps and noise resilience are critical.

Innovation Solution

A method where a base station determines and configures parameters for PDSCH groups across multiple beams, including starting times, time periods, symbol lengths, and bandwidths, and transmits these parameters to user equipment (UE), along with synchronization signals, to optimize resource allocation and beam switching, specifically addressing beam switching gaps and noise resilience in higher frequency bands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple PDSCHs are transmitted across multiple beams without coordinated parameters, then beam diversity and coverage are improved, but resource allocation efficiency and synchronization deteriorate

Engineering Contradiction:

Improvebeam diversity and coverageVSAvoidresource allocation efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies parameter changes by establishing coordinated relationships between PDSCH parameters (starting time, time period, symbol length, bandwidth) across multiple beams. The base station configures and transmits parameter configurations that synchronize PDSCH transmissions across different beams, transforming independent parameter settings into coordinated parameter relationships, thereby resolving the contradiction between beam diversity and resource allocation efficiency

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent segments the PDSCH transmissions into grouped configurations where multiple PDSCHs across different beams share common parameter settings. By grouping PDSCHs and applying unified parameter coordination within each group, the system maintains beam-specific transmissions for coverage while achieving resource allocation efficiency through standardized parameter management across the group

Inventive Principle:

Principle #1Segmentation

2Area of stationary object

If beam switching is performed frequently to cover more directions, then coverage area is improved, but beam switching gaps and synchronization issues worsen

Engineering Contradiction:

Improvecoverage areaVSAvoidbeam switching gaps

Core Design Contradiction:

Area of stationary objectVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-configuring and transmitting parameter information to the UE before actual PDSCH transmissions occur. The base station provides advance notification of PDSCH parameter configurations including timing information, allowing the UE to prepare for upcoming transmissions and reducing the impact of beam switching gaps through proactive parameter alignment

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent ensures continuity of useful action by coordinating PDSCH parameters across beams to minimize interruptions. By aligning starting times, time periods, and symbol lengths of PDSCHs across different beams, the system maintains continuous data transmission to the UE, reducing the effective impact of beam switching gaps and keeping the communication channel continuously productive

Inventive Principle:

Principle #20Continuity of useful action

3Manufacturing precision

If detailed parameters are configured for each PDSCH individually, then transmission precision is improved, but signaling overhead increases

Engineering Contradiction:

Improvetransmission precisionVSAvoidsignaling overhead

Core Design Contradiction:

Manufacturing precisionVSLoss of information

Solution Approach 1:

The patent applies merging by combining parameter configurations for multiple PDSCHs into unified parameter sets that apply across groups of beams. Instead of configuring each PDSCH independently with full parameter details, the base station creates consolidated parameter configurations that cover multiple PDSCHs, thereby maintaining transmission precision through coordinated parameters while significantly reducing the signaling overhead required to communicate these configurations to the UE

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11617178B2Sib PDSCH beam clustering for initial access information

Publication Date: 2023.03.28 QUALCOMM INC

AI summary

A base station may determine one or more parameters of a PDSCH group including multiple PDSCHs for each beam in a plurality of beams, configure a plurality of resources for communication via the PDSCH group based on the determined one or more parameters of the PDSCH group, and transmit, to a UE, an indication of at least one parameter of the one or more parameters of the PDSCH group via the plurality of resources. The base station may also transmit, via the plurality of resources, one or more PDSCHs based on the at least one parameter of the one or more parameters of the PDSCH group. The UE may receive the indication of at least one parameter of the PDSCH group including multiple PDSCHs for each beam in a plurality of beams, and receive, from the base station, one or more PDSCHs based on the indication.