Uplink Data Compression Rate Limiting for 5G NR

Solution Overview

Problem

Uplink data compression (UDC) in 5G NR networks is a processing-intensive task that can affect end-to-end throughput for some devices, particularly due to high data rates and increased processing complexity.

Innovation Solution

Implementing a scaling factor mechanism to reduce the maximum uplink data rate for UDC operations, allowing the UE and RAN to adjust data rates and manage processing loads, and enabling the UE to evaluate and adjust UDC usage based on processing load and energy consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If uplink data compression is implemented to reduce UL resources and transmission latency, then resource efficiency and latency are improved, but processing intensity increases and end-to-end throughput deteriorates

Engineering Contradiction:

Improvetransmission latencyVSAvoidend-to-end throughput

Core Design Contradiction:

Loss of timeVSProductivity

Solution Approach 1:

The patent introduces a data rate limitation parameter that caps the maximum uplink data rate for UDC DRBs. This parameter change allows the system to manage processing intensity by restricting the data rate to levels that UE processing capabilities can handle, thereby maintaining throughput while enabling compression benefits.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamic configuration where the data rate limitation can be adjusted based on UE capabilities and network conditions. The RAN can configure different data rate limits for different UDC DRBs, allowing the system to adaptively balance between compression benefits and processing requirements.

Inventive Principle:

Principle #15Dynamics

2Area of stationary object

If uplink data compression is implemented to reduce UL resources, then spectrum efficiency is improved, but processing complexity increases

Engineering Contradiction:

ImproveUL resourcesVSAvoidprocessing complexity

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The patent introduces a data rate limitation parameter that caps the maximum uplink data rate for UDC DRBs. This parameter change allows the system to manage processing intensity by restricting the data rate to levels that UE processing capabilities can handle, thereby maintaining throughput while enabling compression benefits.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamic configuration where the data rate limitation can be adjusted based on UE capabilities and network conditions. The RAN can configure different data rate limits for different UDC DRBs, allowing the system to adaptively balance between compression benefits and processing requirements.

Inventive Principle:

Principle #15Dynamics

3Productivity

If maximum data rate is increased to improve throughput, then productivity is improved, but processing load increases and reliability deteriorates

Engineering Contradiction:

ImprovethroughputVSAvoidUDC performance reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent introduces a data rate limitation parameter that caps the maximum uplink data rate for UDC DRBs. This parameter change allows the system to manage processing intensity by restricting the data rate to levels that UE processing capabilities can handle, thereby maintaining throughput while enabling compression benefits.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250184814A1Uplink Data Compression Data Rate Limitation for NR

Publication Date: 2025.06.05 APPLE INC

AI summary

A user equipment (UE) is configured to transmit an indication of a scaling factor parameter to use for uplink (UL) data compression (UDC) operations, receive a radio resource control (RRC) configuration for UDC parameters to configure UDC data radio bearers (DRBs), associate the scaling factor parameter with configured UDC DRBs and calculating a maximum uplink data rate for the configured UDC DRBs in dependence on the scaling factor parameter, and perform UDC for UL packets in dependence on the calculated maximum uplink data rate.