Terminal Device Interference Avoidance via SSID Detection
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Solution Overview
Problem
In environments with multiple wireless LAN access points, existing LAA communication systems face issues with radio interference, leading to unnecessary handover requests and increased load on both the communication base station and terminal devices, as the frequency band changes may still cause interference with other wireless LAN communications.
Innovation Solution
A terminal device equipped with a communication unit, detection unit, and interference avoidance unit that identifies specific wireless LAN network identifiers and controls channel switching to avoid conflicts, only making handover requests when a registered SSID is detected, thereby reducing unnecessary interference and load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the wireless device changes frequency band to avoid radio interference with wireless LAN communication, then radio interference is avoided, but unnecessary handover requests are generated increasing load on base station and terminal device
Solution Approach 1:
The patent changes the parameter of interference detection from generic frequency band detection to specific identifier-based detection. The terminal device detects whether the detected wireless LAN communication uses a specific identifier (such as a pre-configured BSS identifier) before triggering frequency band switching. This selective approach based on identifier matching reduces unnecessary handover requests while still avoiding actual interference with relevant wireless LAN communications.
2Reliability
If the wireless device continuously monitors and switches frequency bands to avoid interference, then communication reliability is improved, but unnecessary handover requests increase system load
Solution Approach 1:
The patent applies preliminary action by pre-configuring specific identifiers (such as BSS identifiers) in the terminal device before operation. These identifiers represent wireless LAN communications that should be avoided. When monitoring detects a matching identifier, the terminal device triggers frequency band switching. This pre-configuration approach enables reliable interference avoidance only for predetermined target networks, reducing unnecessary monitoring and switching operations that would otherwise decrease system efficiency.
Data Source
AI summary
A terminal device includes: a communication unit configured to communicatively connect with a first network using a first frequency band or a second frequency band; a detection unit configured to detect communication of a second network that is performed using the second frequency band; an interference avoidance unit configured to perform a process of avoiding radio interference by the second network; and a control unit configured to perform control such that the interference avoidance unit performs the process of avoiding radio interference by the second network band in a case that an identifier identifying communication of the second network detected by the detection unit includes a specific identifier.