Detour Path Setup in Wideband High Frequency Wireless Systems
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Solution Overview
Problem
In wireless systems using ultra-wideband high frequency signals, signal blockages due to obstacles or humans can cause communication errors and disconnections, especially in systems relying on Line of Sight, leading to issues with high-speed data and video streaming.
Innovation Solution
A method and apparatus for quickly setting a detour path in a wideband high frequency wireless system using a centralized Media Access Control (MAC) protocol, which involves a piconet coordinator managing time synchronization and resource allocation to enable communication via a relay device when a direct path is blocked, using beacon messages, probe requests, and beamforming to verify and select the best communication path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a directional antenna is used for power efficiency in ultra-wideband high frequency wireless system, then power efficiency is improved, but communication reliability deteriorates due to strong straightness and high offset by obstacles
Solution Approach 1:
The system dynamically switches between direct path communication and relay path communication based on channel conditions. When the direct path is blocked, the system transitions to using relay devices to maintain communication, making the communication path adaptive rather than static.
Solution Approach 2:
Relay devices are introduced as intermediaries to forward signals between source and destination devices when the direct path is blocked. The relay device receives signals from the source, processes them, and transmits to the destination, enabling communication through indirect paths.
2Reliability
If Line of Sight is required for smooth communication in high frequency wireless system, then communication quality is improved, but adaptability to blocked environments deteriorates
Solution Approach 1:
The system dynamically adapts its communication path based on environmental conditions. It monitors channel status and automatically switches between direct LOS paths and indirect relay paths, making the system adaptable to both line-of-sight and non-line-of-sight environments.
Solution Approach 2:
The system changes communication parameters such as path selection (direct vs. relay), beamforming directions, and resource allocation based on detected channel conditions. When LOS is blocked, parameters are adjusted to use relay devices and alternative paths.
3Reliability
If diversity function and beamforming are used to acquire optimal transmission path, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The system segments the network into a piconet managed by a coordinator device. The coordinator handles complex tasks such as beacon message transmission, resource allocation, and relay device management, while other devices focus on data transmission, dividing the overall system complexity into manageable parts.
Solution Approach 2:
The piconet coordinator acts as an intermediary that manages diversity functions and beamforming operations. It coordinates between multiple transmit antennas and relay devices, handling the complexity of path selection and resource allocation centrally rather than distributing it across all devices.
4Reliability
If centralized MAC protocol is used for time synchronization and resource allocation, then communication coordination is improved, but response speed for detour path establishment deteriorates
Solution Approach 1:
The system performs preliminary actions by maintaining a pool of pre-identified relay devices and pre-configured resource allocations. When a direct path is blocked, these pre-prepared resources can be quickly activated without requiring extensive negotiation or setup, speeding up detour path establishment.
Solution Approach 2:
The system uses feedback mechanisms where devices report channel status and blockage detection to the piconet coordinator. Based on this feedback, the coordinator rapidly allocates relay resources and establishes detour paths, enabling quick response while maintaining centralized coordination.
Data Source
AI summary
Provided is a method and apparatus for setting a detour path in a wideband high frequency wireless system using a centralized Media Access Control (MAC) protocol. Here, in a wireless system using the centralized MAC protocol where a time synchronization and a band allocation may be performed by a single central control unit, when a signal blockage occurs while a data communication is being performed via a direct path between a source device and a destination device, the detour path may be quickly provided.