Wireless Communication Device Beam Pattern Control
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Solution Overview
Problem
In wireless communication devices using millimeter wave communication, the beam pattern of the transmitting antenna is often changed unnecessarily, leading to deterioration in communication quality, as existing methods fail to accurately determine when a change is required.
Innovation Solution
A wireless communication device that includes a receiving unit, a response-frame generating unit, a determining unit, and an antenna control unit, which determines whether the same transmission frame is retransmitted from the communication partner before changing the beam pattern of the transmitting antenna, thereby avoiding unnecessary changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the beam pattern of the transmitting antenna is changed frequently to adapt to communication environment changes, then the adaptability of the communication system is improved, but the communication quality deteriorates due to unnecessary changes
Solution Approach 1:
The system uses feedback from received frames to determine whether beam pattern changes are necessary. The determining unit checks if received frames are retransmissions by comparing sequence numbers, and only triggers beam pattern changes when actual communication failures occur, rather than changing patterns on every transmission attempt.
Solution Approach 2:
The system changes the beam pattern parameter only when necessary conditions are met (when a frame is determined to be a retransmission due to communication failure). The antenna control unit modifies the beam pattern parameters based on feedback from the determining unit, avoiding unnecessary parameter changes that would degrade communication quality.
2Adaptability or versatility
If the beam pattern is changed to improve communication adaptability, then the communication coverage is improved, but the power consumption increases
Solution Approach 1:
The system uses feedback mechanisms to determine when beam pattern changes are truly necessary. By checking whether received frames are retransmissions through sequence number comparison, the system avoids unnecessary beam pattern changes and the associated power consumption, while still maintaining adaptability when actual communication failures occur.
3Reliability
If the beam pattern switching frequency is increased to adapt to environment changes, then the communication reliability is improved, but the connection time increases
Solution Approach 1:
The system uses feedback from frame reception status to trigger beam pattern changes only when necessary. The determining unit compares sequence numbers to identify retransmissions, and the antenna control unit changes beam patterns only in response to actual communication failures, reducing unnecessary switching time while maintaining reliability.
Data Source
AI summary
There is provided a wireless communication device that includes: a receiving unit that receives a first transmission frame via a receiving antenna, the first transmission frame being transmitted from a communication partner; a response-frame generating unit that generates a first response frame indicating reception of the first transmission frame, based on the first transmission frame received via the receiving antenna; a transmitting unit that transmits the generated first response frame via a transmitting antenna; a determining unit that determines whether or not the same first transmission frame is retransmitted from the communication partner; and an antenna control unit that changes a beam pattern of the transmitting antenna, when the same first transmission frame is retransmitted from the communication partner.