Relay Station Positioning for Obstacle-Avoided Mobile Communication
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Solution Overview
Problem
Conventional wireless communication systems face difficulties in maintaining a communication path between a mobile station and a base station when obstacles, such as buildings, are present, especially in scenarios involving millimeter wave communication where direct communication is attenuated and multi-hop networks struggle to dynamically adjust due to positional changes.
Innovation Solution
A communication system where the mobile station pauses movement upon sensing an obstacle and adjusts its route to avoid it, while the relay station dynamically repositions to maintain clear line-of-sight communication with both the mobile station and the base station, ensuring continuous communication by tracking the mobile station's movement and adjusting its position accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-hop network is used to avoid obstacles, then communication path can be established, but dynamic control of network configuration becomes complex and difficult to implement
Solution Approach 1:
The patent introduces a base station as an intermediary coordinator that manages relay station assignments and network configuration. Instead of requiring complex distributed control among mobile devices, the base station centralizes the intelligence for determining when and how to establish multi-hop paths, simplifying the overall system control architecture while maintaining reliable communication path establishment
Solution Approach 2:
The system dynamically adjusts the network configuration by selectively activating relay stations based on real-time obstacle detection and communication needs. The relay stations are dynamically added or removed from the communication path as obstacles appear or disappear, allowing the network to adapt its topology without requiring complete reconfiguration
2Reliability
If relay stations are used to maintain communication behind obstacles, then communication reliability improves, but system complexity and coordination requirements increase
Solution Approach 1:
The base station serves as an intermediary that coordinates relay station operations. It receives obstacle detection information from mobile devices, determines appropriate relay assignments, and manages the configuration of multi-hop paths. This centralized coordination reduces the complexity burden from individual devices while improving overall communication reliability behind obstacles
Solution Approach 2:
The system implements feedback loops where mobile devices report obstacle positions to the base station, which then adjusts relay station assignments accordingly. The base station continuously monitors communication quality and dynamically reconfigures relay paths based on feedback about obstacle locations and signal conditions, improving reliability while managing complexity through adaptive control
Data Source
AI summary
A communication system including a mobile station that communicates with a wireless station and moves toward a predetermined destination, and a relay station that relays communication between the mobile station and the wireless station, includes: the mobile station that pauses movement when sensing an obstacle present on a first moving route toward the destination in a case of moving along the first moving route, and moves along a second moving route headed to the destination while avoiding the obstacle when establishing communication between the mobile station and the wireless station via the relay station in a case where the movement is paused; and the relay station that moves so as to keep a position where communication between the mobile station and the wireless station can be relayed according to movement of the mobile station when the mobile station moves along the second moving route.