Random Access Parameter Sets for RAN Coverage and Resource Efficiency

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Solution Overview

Problem

Existing random access procedures in wireless communication networks, such as LTE and NR, are inefficient due to the lack of differentiation in access parameters for different types of random access, leading to suboptimal resource utilization and coverage issues.

Innovation Solution

Implementing distinct sets of access parameters for different random access procedures, including contention-based and contention-free access, tailored to specific scenarios and UE capabilities, to enhance efficiency and coverage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a single set of access parameters is used for all random access procedures, then the system is simple to operate, but resource utilization is suboptimal and coverage is limited

Engineering Contradiction:

Improvesimplicity of access parameter managementVSAvoidresource utilization efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent segments the random access procedures into different types (contention-based and contention-free) and assigns different sets of access parameters to each type. This segmentation allows the system to optimize parameters specifically for each procedure type, improving resource utilization while maintaining manageable complexity through structured organization.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by tailoring access parameters to specific local conditions - different parameter sets are configured for different random access procedure types and can be further customized for different cells, UEs, or scenarios. This enables optimization of resource allocation and coverage for each specific context rather than using a one-size-fits-all approach.

Inventive Principle:

Principle #3Local quality

2Device complexity

If a single set of access parameters is used for all random access procedures, then the system configuration is simple, but coverage is limited

Engineering Contradiction:

Improveconfiguration complexityVSAvoidcoverage

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent implements local quality by configuring different access parameters for different random access procedure types and specific scenarios. This allows the system to optimize coverage for each procedure type (contention-based and contention-free) with parameters tailored to their specific requirements, thereby improving overall system coverage and reliability.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent applies parameter changes by introducing multiple sets of access parameters that can be selectively applied based on the random access procedure type and scenario. This enables dynamic adjustment of parameters such as power levels, timing, and resource allocation to improve coverage under different conditions while maintaining manageable configuration complexity through structured parameter management.

Inventive Principle:

Principle #35Parameter changes

3Productivity

If different sets of access parameters are used for different random access procedures, then resource allocation is optimized, but system complexity increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments random access procedures into distinct types (contention-based and contention-free) with dedicated parameter sets for each. This segmentation optimizes resource allocation for each procedure type while managing system complexity through clear structural organization and standardized parameter groups.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements universality by creating parameter sets that can be applied across multiple scenarios and procedure types. The framework allows a single parameter set design to serve multiple purposes (different RA types, different cells, different UE capabilities), reducing overall system complexity while maintaining optimization benefits.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Productivity

If different sets of access parameters are used for different random access procedures, then spectrum efficiency is improved, but operational complexity increases

Engineering Contradiction:

Improvespectrum efficiencyVSAvoidoperational complexity

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent segments access parameters into procedure-type-specific sets, allowing spectrum-efficient optimization for each random access procedure type. This segmentation improves spectrum efficiency by allocating resources appropriately for contention-based versus contention-free access while managing operational complexity through standardized parameter groups and automated selection mechanisms.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12588074B2Random access for radio access networks

Publication Date: 2026.03.24 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

There is disclosed a method of operating a network node in a radio access network, the method including performing a random access response procedure based on a set of access parameters, the random access response procedure being one of a first procedure type and a second procedure type, a first set of access parameters being used for a random access response procedure of the first procedure type and a second set of access parameters being used for a random access response procedure of the second procedure type. The disclosure also pertains to related methods and devices.