Frequency Domain Exchange Module for LTE-A Coordinated Cells
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Solution Overview
Problem
The LTE-A system lacks the capability for data exchange between a serving cell and a coordinated cell, leading to interference and suboptimal radio signal quality.
Innovation Solution
A method and device that utilize a frequency domain exchange module to receive and process signals from coordinated cells, enabling joint processing with signals from the serving cell through baseband processing units, thereby facilitating data exchange and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CoMP technology is used to expand coverage and improve throughput, then system performance is improved, but data exchange between serving cell and coordinated cell cannot be implemented
Solution Approach 1:
The patent introduces a frequency domain exchange module as an intermediary component that enables data exchange between the serving cell and coordinated cell. This module receives frequency domain signals from the coordinated cell, performs exchange operations, and provides the exchanged data to the serving cell, thereby resolving the contradiction by adding a mediating element that enables the previously impossible data exchange functionality.
2Reliability
If multiple cells transmit data simultaneously to improve signal quality, then radio signal quality is improved, but interference from other UEs increases
Solution Approach 1:
The patent converts the harmful interference from coordinated cells into a beneficial signal by implementing joint processing. The frequency domain exchange module enables the serving cell to receive and process signals from coordinated cells, transforming what would normally be interference into useful signal components that improve overall signal quality and data reception reliability.
3Device complexity
If only serving cell performs scheduling to simplify coordination, then device complexity is reduced, but data exchange and joint processing cannot be achieved
Solution Approach 1:
The patent segments the base station functionality into distinct modules: baseband processing units for individual cells and a frequency domain exchange module for inter-cell communication. This segmentation allows the serving cell to maintain its scheduling simplicity while enabling data exchange with coordinated cells through the specialized exchange module, thus resolving the contradiction by dividing functions into dedicated components.
Data Source
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AI summary
The present invention provides a signal sending method and a base station device, where the signal sending method includes: receiving, by a frequency domain exchange module, a first frequency domain signal of a first user equipment, where the first frequency domain signal is obtained from at least one coordinated cell of the first user equipment and is sent by a baseband processing unit of at least two baseband processing units, where the baseband processing unit corresponds to the at least one coordinated cell of the first user equipment; and sending, by the frequency domain exchange module, the first frequency domain signal to a first baseband processing unit of the at least two baseband processing units, where the first baseband processing unit corresponds to a serving cell of the first user equipment. In the present invention, data exchange between a serving cell and a coordinated cell in an LTE-A system can be implemented, thereby effectively reducing influence of interference and improving the quality of a radio signal.