Wireless Handover via Pre-Shared Connection Data
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Solution Overview
Problem
In wireless communication systems, mobile devices face challenges during handovers between base stations, particularly when signal strength degrades, as existing methods require time-consuming and power-intensive processes like signal scanning and negotiation.
Innovation Solution
A method where a sender device transmits connection information, including channel, traffic, signal strength, and frequency spectrum details, to a receiver device via a machine-to-machine network, allowing the receiver to seamlessly handover to a better signal without scanning or negotiation by predicting movement and coordinating with the base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional handover methods are used where mobile devices perform signal scanning and negotiation, then connection reliability is maintained, but handover time and energy consumption increase significantly
Solution Approach 1:
The patent applies preliminary action by having the source base station pre-share user context information with neighboring target base stations before handover is needed. This advance preparation eliminates the need for time-consuming signal scanning and negotiation during actual handover, as target base stations are already informed and ready to accept the connection, thus resolving the contradiction between maintaining reliability and reducing handover time
Solution Approach 2:
The patent uses the source base station as an intermediary that collects and distributes connection information to multiple target base stations. This intermediary approach allows seamless handover by having the source base station mediate the information exchange between mobile device and target base stations, eliminating direct scanning and negotiation between the device and multiple targets, thereby reducing handover time while maintaining connection reliability
2Reliability
If conventional handover methods are used with signal scanning and negotiation, then connection reliability is maintained, but energy consumption increases
Solution Approach 1:
The patent applies preliminary action by having the source base station pre-share user context information with neighboring target base stations before handover is needed. This advance preparation eliminates the need for energy-intensive signal scanning and negotiation during actual handover, as target base stations are already informed and ready to accept the connection, thus resolving the contradiction between maintaining reliability and reducing energy consumption
Solution Approach 2:
The patent uses the source base station as an intermediary that collects and distributes connection information to multiple target base stations. This intermediary approach allows seamless handover by having the source base station mediate the information exchange, eliminating energy-consuming direct scanning and negotiation between the mobile device and multiple targets, thereby reducing energy consumption while maintaining connection reliability
3Reliability
If the mobile device performs measurement reports and the serving cell determines handover, then connection reliability is maintained, but device complexity and processing requirements increase
Solution Approach 1:
The patent uses the source base station as an intermediary that collects and distributes connection information to multiple target base stations. This intermediary approach simplifies device complexity by having the source base station handle the complex information exchange and handover determination logic, rather than requiring the mobile device to perform complex measurements and negotiations with multiple targets, thereby reducing device complexity while maintaining connection reliability through base station-mediated coordination
Data Source
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AI summary
A method performed under control of a receiver device may include receiving, from a sender device, connection information regarding a first apparatus that is connected to the sender device via a machine -to-machine network between the sender device and the receiver device; and connecting to the first apparatus based at least in part on the received connection information after the sender device is disconnected from the first apparatus.