RACH Resource Selection Using Terminal Feature Feedback

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Solution Overview

Problem

Networks often configure Random Access Channels (RACH) that do not match the expected RACH features or combinations of features supported by terminals, leading to suboptimal RACH configurations.

Innovation Solution

Terminals and network devices exchange information about RACH features, allowing the network to update configurations to better match the terminal's capabilities, and terminals select RACH resources based on received information to ensure a better match.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the network side configures a separate RACH for each feature or feature combination, then the RACH configuration can be customized for different features, but the complexity of RACH configuration increases and may not match the terminal's expected RACH configuration

Engineering Contradiction:

ImproveRACH configuration adaptabilityVSAvoidRACH configuration complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple RACH configurations into a single RACH configuration that includes multiple RACH resources. Each RACH resource can be associated with different features or feature combinations, allowing the network to configure multiple features within a unified RACH structure rather than creating separate RACH configurations for each feature.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single RACH configuration serves multiple functions by supporting multiple features (e.g., RedCap, SDT, CE, slicing) through different RACH resources. This universal RACH configuration can adapt to different terminal capabilities and requirements without requiring separate dedicated configurations for each feature.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple RACH resources are configured for different features, then the terminal can select the appropriate RACH resource, but the terminal may not expect a specific RACH configuration that matches its capabilities

Engineering Contradiction:

ImproveTerminal RACH selection capabilityVSAvoidRACH feature information accuracy

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent introduces a feedback mechanism where the terminal reports its supported features and expected RACH configuration to the network side. The network side uses this feedback information to select and configure the appropriate RACH resources, ensuring that the configured RACH configuration matches the terminal's capabilities and expectations.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The terminal performs preliminary actions by reporting its supported features and RACH expectations before the actual random access process. This allows the network side to prepare and configure the appropriate RACH resources in advance, ensuring that the selected RACH configuration matches the terminal's capabilities.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20260032731A1Information processing method, apparatus and readable storage medium

Publication Date: 2026.01.29 DATANG MOBILE COMM EQUIP CO LTD

AI summary

An information processing method, an information processing apparatus and a readable storage medium are provided, which relate to the field of communication technology. The method includes: sending, by a terminal, first information to a network device, where the first information includes information of at least one first RACH feature.