Coordinated Cloud Cell Beamforming for High-Frequency Communication

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Solution Overview

Problem

Current communication systems face challenges in increasing data rate and reliability, especially at higher frequencies where propagation range is reduced, and existing beamforming technologies struggle to maintain efficient communication due to interference and limited service coverage.

Innovation Solution

The implementation of a coordinated communication method in a beamforming system, where multiple base stations within a cloud cell cooperate to determine and manage uplink control channels, allowing for seamless signal transmission and reception between terminals and base stations, ensuring efficient and reliable communication by establishing relationships through frame information and coordinated operations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If communication is performed at higher frequencies than 10 GHz, then data rate is improved, but propagation range is reduced

Engineering Contradiction:

Improvedata rateVSAvoidpropagation range

Core Design Contradiction:

ProductivityVSLength of moving object

Solution Approach 1:

Multiple base stations are merged into a single cloud cell entity that performs coordinated communication. The base stations work together as a unified system to transmit and receive signals, effectively extending the propagation range while maintaining high-frequency benefits for data rate improvement.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The system transitions from single-base-station communication to multi-base-station coordinated communication, adding a spatial dimension to the communication architecture. This dimensional expansion allows signals to reach farther distances through cooperative transmission and reception across multiple locations.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Productivity

If beamforming is implemented to increase data rate, then spectral efficiency is improved, but communication reliability is reduced due to interference

Engineering Contradiction:

Improvedata rateVSAvoidcommunication reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The cloud cell implements coordinated feedback mechanisms where base stations exchange channel state information and coordination messages. This feedback loop enables the system to adapt to interference conditions dynamically, maintaining beamforming benefits while improving communication reliability through cooperative interference management.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The cloud cell controller acts as an intermediary that coordinates between multiple base stations and terminals. It manages beamforming operations across base stations, resolves interference conflicts, and ensures reliable communication while maintaining high data rates through coordinated spectral efficiency optimization.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Area of stationary object

If multiple base stations cooperate in cloud cell, then service coverage is extended, but system complexity increases

Engineering Contradiction:

Improveservice coverageVSAvoidsystem complexity

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The cloud cell system segments the complex multi-base-station coordination function into modular components: cloud cell controller, base station units, and terminal devices. Each segment handles specific tasks independently, managing system complexity while achieving extended service coverage through their coordinated interaction.

Inventive Principle:

Principle #1Segmentation

4Reliability

If uplink control channel is determined through base station cooperation, then communication reliability is improved, but signaling overhead increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The determined uplink control channel serves multiple functions simultaneously: it carries control signals from terminals to multiple base stations, enables coordinated reception across the cloud cell, and provides a universal interface for reliable communication. This multi-functionality improves reliability while minimizing additional signaling overhead by consolidating control channel operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9236917B2Coordinated communication in communication system

Publication Date: 2016.01.12 SAMSUNG ELECTRONICS CO LTD

AI summary

A method of supporting communication of a terminal in a first base station of a beamforming system is provided. The method includes determining an uplink control channel through which both the first base station and at least one second base station are able to receive signals, through cooperation with the at least one second base station, the first base station and the at least one second base station belonging to a cloud cell, and transmitting to the terminal information on the determined uplink control channel and frame information to establish relationships with the base stations included in the cloud cell for each transmit frame of a signal to be transmitted to the terminal from the base stations.