Base Station Shared PRACH for Scheduling Requests

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Solution Overview

Problem

In 5G wireless communication systems, existing technologies face challenges in efficiently utilizing wireless resources and channels, particularly during random-access procedures and scheduling requests, leading to suboptimal resource allocation and usage.

Innovation Solution

A base station apparatus that allocates and notifies terminal apparatuses of shared wireless resources for scheduling requests, allowing efficient use of PRACHs for both random-access and scheduling request transmissions, thereby optimizing resource utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If dedicated wireless resources are allocated for scheduling requests, then reliability of scheduling request transmission is improved, but wireless resource utilization efficiency deteriorates

Engineering Contradiction:

Improvescheduling request transmission reliabilityVSAvoidwireless resource utilization efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies universality by enabling PRACH resources to serve dual purposes: random access procedure and scheduling request transmission. The base station configures PRACH resources that can be used by terminals for both initial access and scheduling requests, eliminating the need for separate dedicated SR resources and improving overall resource utilization while maintaining transmission reliability

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the random access channel (PRACH) and scheduling request channel into a single resource pool. By combining these previously separate functions into shared PRACH resources, the system achieves better resource efficiency without compromising the reliability of scheduling request transmission, as both functions compete for the same pool of resources

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If separate wireless resources are allocated for random-access procedure and scheduling requests, then reliability of each function is improved, but device complexity and resource management complexity increase

Engineering Contradiction:

Improvefunction-specific transmission reliabilityVSAvoidresource allocation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent reduces complexity by making PRACH resources universal for both random access and scheduling requests. Instead of managing separate resource pools, the base station configures a single set of PRACH resources that serve both purposes, simplifying resource allocation procedures and reducing the complexity of resource management while maintaining functional reliability

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent inverts the conventional approach by not allocating separate dedicated resources for scheduling requests. Instead of creating additional resources, it reuses existing PRACH resources for scheduling requests, thereby reducing resource management complexity while maintaining transmission reliability through the same robust physical channel

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS12058730B2Base station apparatus, terminal apparatus, and communication system

Publication Date: 2024.08.06 1FINITY INC

AI summary

A base station apparatus that executes a random-access procedure, the base station apparatus includes, a notifier that notifies a terminal apparatus of a transmission permission of a scheduling request by a shared wireless resource, which is part or all of wireless resources used for the random-access procedure; and a receiver that receives a scheduling request transmitted from the terminal apparatus by the shared wireless resource.