Two-Level HSUPA Scheduling for Uplink RoT Control

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Solution Overview

Problem

The existing High Speed Uplink Packet Access (HSUPA) scheduling methods are complex and require significant computational resources, which hinders operation efficiency and increases the complexity of the scheduler.

Innovation Solution

A two-level scheduling approach is introduced, where the first level distributes the target Rise over Thermal (RoT) among UEs and the second level tracks the assigned RoT via relative authority instructions based on current and historical channel quality, simplifying the scheduling process and reducing the computational burden.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If traditional HSUPA scheduling methods are used, then scheduling control can be achieved, but the scheduler complexity and computational resource requirements increase significantly

Engineering Contradiction:

Improvescheduler complexityVSAvoidoperation efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent segments the scheduling process into two distinct levels: a first level that distributes target RoT values to UEs, and a second level that tracks assigned RoT via relative authority instructions. This segmentation divides the complex scheduling task into manageable sub-tasks, reducing overall scheduler complexity while maintaining operational efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces target RoT (Rise over Thermal) as an intermediary parameter that mediates between the scheduler and UE power control. Instead of directly managing complex scheduling decisions, the scheduler assigns target RoT values, which then guide UE transmission power adjustments. This intermediary simplifies the scheduling logic while preserving fine-grained control over uplink resources.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If detailed scheduling control is implemented, then resource allocation precision improves, but computational burden increases

Engineering Contradiction:

Improvecell load control precisionVSAvoidcomputational resources

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent performs preliminary action by distributing target RoT values at the first scheduling level before detailed tracking occurs at the second level. This preliminary assignment establishes a framework that guides subsequent finer-grained adjustments, enabling precise cell load control without requiring full computational complexity at every scheduling instance.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies partial action by having the second level scheduler track only the assigned RoT via relative authority instructions rather than recalculating all scheduling parameters. This partial re-scheduling approach maintains precision in cell load control while significantly reducing the computational burden compared to full re-scheduling at each interval.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS8948070B2Scheduling method and system for high speed uplink packet access

Publication Date: 2015.02.03 ZTE CORP

AI summary

A scheduling method and system for high speed uplink packet access which comprises the following two-level scheduling: a first level scheduling for distributing the target rise over thermal (RoT) of each user equipment (UE); and a second level scheduling for tracking the assigned to target RoT via transmitting a relative authority instruction, according to the current authority and channel quality of the UE.