Wireless Handover Event Prioritization
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Solution Overview
Problem
Existing cellular communication systems face challenges in efficiently managing handover events in rapidly changing radio environments, particularly in dense urban areas, leading to potential dropped calls or connections due to the triggering of handover events to less suitable cells.
Innovation Solution
A method implemented by a communications device to determine and prioritize handover events based on cell quality parameters, where a priority order is established for pending handover events, allowing for the transmission of the most suitable events first, potentially discarding less relevant ones, thereby reducing the risk of initiating handovers to outdated or less suitable cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple handover events are triggered in rapidly changing radio environments, then the terminal can respond to various cell quality changes, but the quantity of reported events increases and redundant communications occur
Solution Approach 1:
The patent applies the discarding principle by selectively discarding redundant or low-priority handover events from the queue. When multiple handover events are triggered, the system evaluates their priority based on current radio conditions and discards events that are no longer relevant or have lower priority, thereby reducing the quantity of reported events while maintaining adaptability to important cell quality changes.
2Ease of operation
If handover events are transmitted in triggered event order, then the transmission process is simple, but handovers may be initiated to outdated or less suitable cells in rapidly changing environments
Solution Approach 1:
The patent applies the dynamics principle by making the transmission order of handover events dynamic rather than static. Instead of transmitting events in the fixed order they were triggered, the system continuously re-evaluates the priority of pending events based on current radio conditions and transmits them in an optimized order, thereby improving handover suitability while maintaining operational feasibility.
3Loss of information
If all triggered handover events are communicated to the network, then no information is lost, but the network load increases and processing complexity increases
Solution Approach 1:
The patent applies the extraction principle by separating important handover events from less important ones. The system extracts and prioritizes only the most relevant handover events for transmission to the network, based on current radio conditions and event characteristics. This reduces network processing complexity while ensuring that critical information is not lost.
4Device complexity
If handover events are transmitted with delay to reduce network load, then network processing is reduced, but the risk of handovers to outdated cells increases
Solution Approach 1:
The patent applies the feedback principle by continuously monitoring radio conditions and using this feedback to dynamically adjust the transmission timing and priority of handover events. The system receives feedback about current cell quality and uses this information to determine which events to transmit immediately versus which can be delayed, thereby maintaining handover timeliness while reducing network processing load.
Data Source
AI summary
To communicate wireless handover events, a communications device associated with a serving cell of a cellular network determines, based on at least one or more first measurement results indicative of cell quality parameters of a plurality of cells of the cellular network, a first handover event associated with a first one of the cells, initiates communication of a first handover message indicative of the determined first handover event to a network entity of the cellular network, and, based on at least one or more second measurement results, determines a plurality of further handover events associated with respective ones of the cells, resulting in a plurality of pending handover events waiting to be communicated to a network entity of the cellular network. The communications device also determines a priority order for at least a subset of the pending handover events. The subset includes handover events associated with different cells.