Carrier Priority Handover Using Signal and Load Criteria
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Solution Overview
Problem
Wireless communication systems face challenges in efficiently managing handovers between carrier bands of different priorities, particularly in scenarios where multiple network operators share resources, as existing systems lack effective mechanisms to determine optimal handover conditions based on signal strength and loading criteria.
Innovation Solution
The system determines handover by assessing signal strength and loading criteria for wireless devices operating on lower and higher priority carriers, using indicators like RSRP, RSRQ, SINR, and CINR, and evaluates loading and capacity to ensure seamless transitions without overloading the higher priority carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover is performed based on signal strength criteria only, then communication quality is improved, but network overload may occur on higher priority carriers
Solution Approach 1:
The patent changes the handover decision parameters from signal strength only to a composite evaluation including both signal strength criteria and loading criteria. The system evaluates multiple parameters (RSRP, RSRQ, SINR, CINR for signal strength; loading metrics for network status) to determine optimal handover timing, preventing network overload while maintaining communication quality.
2Stability of the object's composition
If handover is restricted to prevent network overload, then network stability is improved, but communication quality may deteriorate
Solution Approach 1:
The system dynamically adjusts handover decisions by evaluating both loading criteria and signal strength criteria. When loading criteria are met, handovers are permitted to maintain communication quality; when loading criteria are not met, handovers are restricted to maintain network stability. This dual-parameter approach resolves the contradiction between stability and quality.
Solution Approach 2:
The patent implements dynamic handover control where the system adapts its behavior based on real-time network conditions. The loading criteria evaluation allows the system to dynamically adjust handover permissions, enabling handovers when network capacity permits and preventing them when capacity is exceeded, thus maintaining both stability and quality.
3Productivity
If carrier sharing is implemented among multiple operators, then resource utilization is improved, but handover control complexity increases
Solution Approach 1:
The patent simplifies multi-operator carrier sharing control by establishing clear parameter-based decision rules. The system uses defined loading criteria and signal strength criteria to automatically determine handover eligibility, replacing complex manual or heuristic control mechanisms with systematic parameter evaluation, thus reducing control complexity while maintaining efficient resource utilization.
Data Source
AI summary
In systems and methods of wireless device communication using carrier priority, it is determined for a wireless device using a lower priority carrier that a signal strength of a higher priority carrier meets a signal strength criteria. It is further determined that a loading of the higher priority carrier meets a loading criteria. When the loading meets the loading criteria and the signal strength meets the signal strength criteria, a handover is performed of the wireless device from the lower priority carrier to the higher priority carrier.