Multi-Technology Handover via Trial Communication Evaluation
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Solution Overview
Problem
Current wireless communication standards lack defined mechanisms for seamless handovers between heterogeneous and non-heterogeneous networks, leading to inefficiencies in maintaining communication sessions across different radio access technologies.
Innovation Solution
A method and system for multi-technology handovers, where a mobile station evaluates and requests a handover from a serving base station to a target base station using a different radio access technology by transmitting trial communications and responses, facilitated by a multi-technology handover controller and neighbor list management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile station engages in a communication session via a serving base station using a first radio access technology, then communication continuity is maintained, but the system lacks the capability to perform seamless handovers to target base stations using different radio access technologies
Solution Approach 1:
The system performs preliminary actions by transmitting trial communications to target base stations before actual handover occurs. The mobile station sends trial communications to evaluate target base stations using different radio access technologies, and receives trial responses to assess suitability. This preliminary evaluation enables seamless handovers while maintaining communication session continuity, as the actual handover only occurs after successful trial communication verification.
2Reliability
If the system implements trial communication transmission to evaluate target base stations, then handover reliability is improved, but communication overhead and processing time increase
Solution Approach 1:
The system implements periodic trial communications at strategically determined moments rather than continuous evaluation. The mobile station transmits trial communications periodically when handover conditions are met, and the handover controller manages these periodic trial transmissions. This approach maintains high handover reliability through regular evaluation while minimizing time loss by avoiding constant trial communications.
Data Source
AI summary
A mobile station has a transmitter, a first receiver, and a second receiver, each of which can be configured to use a first radio access technology and a second radio access technology. The mobile station uses the transmitter and the first receiver to engage in a communication session via a serving base station that uses the first radio access technology. When a degradation in quality of the communication session is detected, the mobile station evaluates a target base station by transmitting a trial communication to the serving base station and receiving, through the second receiver, a trial response from a target base station. The target base station uses the second radio access technology. If the trial response is acceptable, the mobile station requests a handover of the communication session to the target base station. The mobile station may select the target base station from a multi-technology neighbor list.