Relay Path Selection for 60 GHz Wireless Communication
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Solution Overview
Problem
Centralized Media Access Control (MAC) based wireless communication systems face challenges in maintaining smooth data transmission when a direct path is blocked or channel status is deteriorated due to obstacles or human interference, particularly in high-speed communication systems like those using the 60 GHz band.
Innovation Solution
The implementation of a device and method that utilizes a relay device to determine channel status and select the best communication path between a direct path and a relay path, allowing data to be transmitted and received via a relay path when the direct path is blocked or of poor quality, using a channel decision unit, path selection unit, and transceiver to manage RF chain modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a direct communication path is used between devices, then communication speed is high (3 Gbps at 60 GHz band), but the channel may be blocked by obstacles or humans causing communication errors
Solution Approach 1:
A relay device is introduced as an intermediary between the transmitting and receiving devices. When the direct communication path is blocked or channel status deteriorates, the relay device forwards data packets between the devices, maintaining communication reliability without sacrificing the high-speed capability of the direct path when available
2Reliability
If a relay path is used to avoid blockage, then communication reliability is improved, but transmission delay increases due to additional routing through relay device
Solution Approach 1:
The system dynamically switches between direct path and relay path based on real-time channel status monitoring. The transmitting and receiving devices continuously assess channel conditions and selectively use the direct path when available (for low delay) or switch to relay path when blocked (for maintained reliability), optimizing the trade-off between reliability and transmission delay
3Productivity
If channel status is monitored continuously to select optimal path, then communication smoothness is improved, but system complexity and energy consumption increase
Solution Approach 1:
The system implements feedback-based channel status monitoring where the receiving device sends acknowledgment packets that include channel quality information back to the transmitting device. This feedback mechanism enables the transmitting device to make informed path selection decisions without requiring complex continuous monitoring at both ends, balancing communication smoothness with system complexity
Data Source
AI summary
Provided is an apparatus and method for transmitting and a receiving data using a relay device in a centralized Media Access Control (MAC). The apparatus may include: a channel decision unit to determine a channel status with respect to a communication path using a corresponding device and a communication path using a relay device; a path selection unit to select at least one communication path between the communication path using the corresponding device and the communication path using the relay device, based on the channel status; and a transceiver to transmit and receive the data via the selected at least one communication path.