Distributed Coordination Group Formation in Wireless Networks

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Solution Overview

Problem

Existing methods for forming coordinated multipoint cell groups in wireless communication systems are limited by centralized processing, static selection, and inability to dynamically adapt to changing radio propagation conditions, leading to underutilization and performance issues in heterogeneous and time-variant environments.

Innovation Solution

A distributed and automated method for forming coordination groups through token-based communication between network nodes, where nodes identify and invite each other to coordinate, allowing for dynamic adaptation and reorganization of groups based on interference and performance metrics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If centralized processing is used for forming coordinated multipoint cell groups, then coordination can be established, but the system lacks adaptability to changing radio propagation conditions and becomes static

Engineering Contradiction:

Improveadaptability to changing radio propagation conditionsVSAvoidcentralized processing structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the centralized coordination function into distributed autonomous decisions at each network node. Instead of a single central controller managing all coordination, each node independently evaluates interference conditions and makes coordination decisions, enabling dynamic adaptation to changing radio conditions while reducing centralized complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic coordination group formation where network nodes continuously monitor interference conditions and adapt coordination relationships in real-time. Coordination groups are not static but dynamically formed and reconfigured based on current radio propagation conditions, allowing the system to respond to changing environments

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If static selection of coordination groups is implemented, then initial coordination can be established, but the system cannot dynamically adapt to time-variant environments

Engineering Contradiction:

Improvedynamic adaptation capabilityVSAvoidperformance consistency in heterogeneous environments

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent implements feedback mechanisms where network nodes continuously monitor interference conditions and use this information to dynamically adjust coordination group membership. The feedback loop enables the system to adapt to time-variant environments while maintaining reliable performance through continuous optimization based on actual radio conditions

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

Each network node autonomously evaluates its own interference conditions and makes self-directed coordination decisions without requiring centralized control. This self-service capability enables dynamic adaptation to changing environments while maintaining performance consistency through distributed intelligence

Inventive Principle:

Principle #25Self-service

3Productivity

If centralized control is used for coordination group formation, then coordination can be managed, but the system becomes underutilized in heterogeneous and time-variant environments

Engineering Contradiction:

Improvenetwork utilization efficiencyVSAvoidcentralized control structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the coordination control function across multiple autonomous network nodes rather than concentrating it centrally. This segmentation enables better utilization of network resources in heterogeneous environments by allowing local nodes to make context-appropriate coordination decisions, improving overall network productivity while reducing reliance on complex centralized control

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS8838118B2Methods and arrangements in a wireless communication system

Publication Date: 2014.09.16 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

Method and arrangement (600) in a first network node (120-1), serving a first cell (130-1), for forming a coordination group for coordinating multipoint wireless communication. The method comprising determining (502) interference within the first cell (130-1). Also, the method comprises identifying (503) a second network node (120-2), which is either transmitting radio signals causing the interference, serving a user equipment (110-1), which transmits radio signals causing the interference, or being the intended recipient of radio signals causing the interference. Additionally, the method comprises transmitting (504) a token to the identified second network node (120-2), inviting it to coordinate the wireless communication. Furthermore, in addition, if acceptance is received, the method comprises forming (505) a coordination group together with the second network node (120-2), and coordinate the wireless communication.Further, a method and arrangement (800) in a second network node (120-2) is presented.