Radio Resource Coordination for CoMP and Single-Point Transmission Interference

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Solution Overview

Problem

Radio communication systems face challenges in coexistence and performance degradation when simultaneously operating mobile stations in CoMP mode and single-point to single-point transmission mode, leading to interference and reduced overall performance.

Innovation Solution

A method for coordinating transmissions in radio communication systems by reserving specific radio resources for both CoMP and single-point to single-point transmissions, including predefining power control parameters and transmitting them efficiently to mobile stations, allowing seamless switching between modes without additional signaling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a radio communication system operates simultaneously with CoMP mode and single-point to single-point transmission mode, then the overall data rate and performance gain are improved, but interference between different transmission modes increases and distorts the IoT operational point

Engineering Contradiction:

Improveoverall data rateVSAvoidinterference between transmission modes

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the radio resources by introducing separate IoT operational points for CoMP mode and single-point transmission mode. This allows independent power control and resource allocation for each transmission type, preventing interference distortion while maintaining overall system productivity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different IoT operational points and power control parameters locally to different transmission modes. CoMP transmissions use one set of parameters while single-point transmissions use another, allowing each mode to operate optimally without interfering with the other.

Inventive Principle:

Principle #3Local quality

2Reliability

If separate power control parameters are used for CoMP mode and single-point transmission mode, then the performance of each mode is optimized, but the complexity of power control management increases

Engineering Contradiction:

Improveperformance optimizationVSAvoidpower control management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent performs preliminary action by pre-defining separate IoT operational points and power control parameters for different transmission modes before actual transmissions occur. This preparation enables seamless switching between modes without real-time calculation complexity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent changes the power control parameters and IoT operational points based on the transmission mode being used. By dynamically adjusting these parameters according to the active mode, the system maintains optimal performance while managing complexity through standardized parameter sets.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If the same IoT operational point is used for both CoMP mode and single-point transmission mode, then the power control management is simplified, but the performance and coverage area for one group degrades when serving the other

Engineering Contradiction:

Improvepower control management simplicityVSAvoidperformance and coverage area

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent segments the IoT operational point concept into mode-specific operational points. Instead of using a single unified IoT point, the system maintains separate IoT operational points for CoMP and single-point transmissions, allowing each to be optimized independently without compromising the other's performance.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS10292109B2Method for coordinating at least one first transmission from a single-point transmitter to a single-point receiver and at least one second transmission from a multipoint transmitter or to a multipoint receiver in a radio communication system, network node and mobile station thereof

Publication Date: 2019.05.14 ALCATEL LUCENT SA

AI summary

The invention relates to a method for coordinating at least one first transmission from a multipoint transmitter or to a multipoint receiver and at least one second transmission from a single-point transmitter to a single-point receiver in a radio communication system. The method comprises the step of reserving at least one first radio resource (SI-F1 to S3-F1, S9-F1, SI 0-F1, SI-F2, SI-F1b-BW2 to SI 0-F1b-BW2, SI-F2b-BW2) for the at least one first transmission for at least two serving areas of the radio communication system and further reserving at least one second radio resource (S4-F1 to S8-F1, SI-F1b-BW1 to SI 0-F1b-BW1, SI-F2b-BW1, SI-F1b-BW3 to SI 0-F1b-BW3, SI-F2b-BW3) for the at least one second transmission for the at least two serving areas). The invention further relates to a network node (NS1, NS2) for coordinating at least one first transmission from a multipoint transmitter or to a multipoint receiver and at least one second transmission in a radio communication system and to a mobile station for use in a radio communication system.