SS Block Pattern Selection in Wireless Networks

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Solution Overview

Problem

Existing wireless communication technologies lack a consistent method for terminal devices to determine the synchronization signal (SS) block subcarrier spacing (SCS) option, leading to ambiguity when multiple SS block pattern candidates are compatible with the same SCS option.

Innovation Solution

The proposed solution involves a method implemented in terminal devices to receive a message indicating the SS block SCS option, which maps to multiple SS block pattern candidates. The terminal device then uses specific criteria, such as radio access technology support and default configurations, to select the appropriate SS block pattern and determine the SSB candidate locations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple SS block pattern candidates are supported with the same subcarrier spacing, then the adaptability and versatility of the terminal device are improved, but the ambiguity in determining which pattern to use increases

Engineering Contradiction:

ImproveSS block pattern compatibilityVSAvoidpattern selection clarity

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent segments the SS block pattern selection process by introducing specific criteria that divide the selection into distinct cases: Case 1 for FR1 with 15kHz SCS, Case 2 for FR2 with 30kHz SCS, and other cases with default patterns. This segmentation eliminates ambiguity by providing clear, mutually exclusive selection paths based on frequency range and subcarrier spacing parameters.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses parameter changes to resolve the contradiction by making the SS block pattern determination dependent on specific parameters: frequency range (FR1/FR2) and subcarrier spacing (15kHz/30kHz). By changing the selection criteria based on these parameters, the system maintains multiple pattern candidates for adaptability while ensuring unambiguous selection through parameter-based rules.

Inventive Principle:

Principle #35Parameter changes

2Ease of operation

If standardized transmission schemes are used, then the ease of operation is improved, but the ability to handle multiple SS block patterns with the same SCS option is limited

Engineering Contradiction:

Improvesynchronization signal transmissionVSAvoidSS block pattern selection

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent applies universality by creating a standardized transmission scheme that universally handles multiple SS block patterns through a unified selection mechanism. The same standardized approach (using frequency range and subcarrier spacing parameters) works across all scenarios, whether single-pattern or multi-pattern situations, making the system both easy to operate and adaptable simultaneously.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250168792A1Method and system for determination of synchronization signal (SS) block mapping pattern in a wireless network

Publication Date: 2025.05.22 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

Embodiments of the invention include methods, systems, and computer programs to determine synchronization signal (SS) block mapping pattern in a wireless network. In one embodiment, a method is implemented in a terminal device for synchronization signal block (SSB) search in a wireless network, the method includes receiving, by the terminal device from a network device, a message containing synchronization signal block (SSB) information indicating a synchronization signal (SS) block subcarrier spacing (SCS) option, where the SS block SCS option maps to a plurality of SS block pattern candidates. The method continues with obtaining SSB candidate locations, using a SS block pattern determination from the plurality of SS block pattern candidates for the terminal device determined.