Dynamic Uplink Interference Coordination in Cellular Systems

Solution Overview

Problem

Existing interference coordination schemes in cellular communication systems fail to adequately account for the dynamic nature of uplink interference, leading to inefficient resource allocation and suboptimal communication throughput.

Innovation Solution

A method and apparatus that dynamically coordinate uplink channel communications by monitoring interference conditions, reporting threshold-exceeding indications from mobile stations to the eNB, and reallocating communication resources based on interference levels and loading conditions, without relying on other eNBs for intra-cell interference coordination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If static time domain representation of uplink interference is used with fixed resource groups, then device complexity is reduced, but communication throughput and interference coordination effectiveness deteriorate

Engineering Contradiction:

Improveinterference coordination complexityVSAvoidcommunication throughput

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent implements dynamic interference coordination by continuously monitoring uplink interference conditions and adapting resource allocation in real-time. The system transitions from static resource groups to dynamic resource allocation that responds to changing interference conditions, thereby improving communication throughput while maintaining manageable complexity through automated feedback mechanisms.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs feedback mechanisms where the system monitors uplink interference conditions and uses this information to dynamically adjust resource allocation. The feedback loop enables the system to adapt to changing interference patterns, improving throughput by allocating resources based on current network conditions rather than fixed assignments.

Inventive Principle:

Principle #23Feedback

2Device complexity

If slow update rate interference coordination is implemented, then device complexity is reduced, but the ability to trace variation of uplink interference distribution deteriorates

Engineering Contradiction:

Improvecoordination system complexityVSAvoidinterference variation tracking accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent implements dynamic interference coordination by continuously monitoring uplink interference conditions and adapting resource allocation in real-time. The system transitions from static resource groups to dynamic resource allocation that responds to changing interference conditions, thereby improving communication throughput while maintaining manageable complexity through automated feedback mechanisms.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs feedback mechanisms where the system monitors uplink interference conditions and uses this information to dynamically adjust resource allocation. The feedback loop enables the system to adapt to changing interference patterns, improving throughput by allocating resources based on current network conditions rather than fixed assignments.

Inventive Principle:

Principle #23Feedback

3Productivity

If dynamic resource reallocation based on interference conditions is implemented, then communication throughput is improved, but device complexity increases

Engineering Contradiction:

Improveuplink throughputVSAvoidresource allocation complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent employs feedback mechanisms where the system monitors uplink interference conditions and uses this information to dynamically adjust resource allocation. The feedback loop enables the system to adapt to changing interference patterns, improving throughput by allocating resources based on current network conditions rather than fixed assignments.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs self-optimization by automatically monitoring interference conditions and reallocating resources without requiring complex external coordination. Each eNB independently monitors its uplink interference and adjusts resource allocation autonomously, reducing the need for complex inter-eNB communication and coordination protocols.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS8694036B2Apparatus and method for providing uplink interference coordination in a radio communication system

Publication Date: 2014.04.08 MALIKIE INNOVATIONS LTD

AI summary

An apparatus and a method provide for uplink interference coordination in a radio communication system, such as a cellular communication system. Measurements are made at mobile stations associated with uplink-channel interference conditions. Reports are made to the network when a mobile station experiences interference conditions beyond a measurement threshold. If greater than a group-threshold number of mobile stations experience high levels of uplink-channel interference, communication resources are reallocated in compensation for the high interference conditions.