Communication Device Beam Separation for Full-Duplex Self-Interference Control
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Solution Overview
Problem
Existing Full Duplex communication systems face issues with self-interference signals due to signal wraparound and reflection, which degrade the quality of received signals.
Innovation Solution
A communication apparatus and method that separates transmission and reception beams using distinct frequency bands, allowing simultaneous communication with multiple counterparts without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Full Duplex communication is implemented to improve data transmission efficiency and reduce delay, then communication productivity is improved, but self-interference signals deteriorate the quality of received signals
Solution Approach 1:
The patent divides the communication system into separate transmission beams and reception beams that operate simultaneously in the same frequency band. By segmenting the beam functions and using spatial separation through beamforming, the system achieves Full Duplex communication while minimizing self-interference between transmission and reception paths.
Solution Approach 2:
The patent applies local quality by optimizing the characteristics of transmission and reception beams in different spatial directions. Through beamforming technology, the system creates directional beams with specific gain patterns that enhance the desired signal while suppressing self-interference in other directions, thereby improving received signal quality during Full Duplex operation.
2Speed
If transmission and reception are performed simultaneously in the same frequency band, then communication speed is improved, but self-interference from signal wraparound and reflection increases
Solution Approach 1:
The patent transitions from frequency-domain separation to spatial-domain separation by implementing Full Duplex communication in the same frequency band using directional beams. This dimensional change allows simultaneous transmission and reception by exploiting the spatial dimension through beamforming, achieving high communication speed while managing self-interference through spatial filtering.
Solution Approach 2:
The patent converts the harmful self-interference signal into a manageable parameter by using beamforming to direct transmission energy toward the intended receiver while creating nulls or low-gain regions in directions where self-interference occurs. This transforms the self-interference problem into a beam pattern design opportunity, allowing simultaneous high-speed transmission and reception.
Data Source
AI summary
This communication device performs communication with a plurality of communication counterpart devices, and comprises: a reception unit which generates a reception beam and uses the reception beam to receive a modulation signal transmitted by any of the plurality of communication counterpart devices; and a transmission unit which generates a transmission beam and uses the transmission beam to transmit a modulation signal to any of the plurality of communication counterpart devices. The reception unit, in a first time of a first frequency band, uses the reception beam to receive a modulation signal from a first communication counterpart device. The transmission unit, in the first time of the first frequency band, uses the transmission beam to transmit a modulation signal to a second communication counterpart device.