Conditional Handover Counter Logic for Accurate 5G Statistics
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Solution Overview
Problem
Existing procedures for collecting handover data in conditional handovers in 5G networks are inaccurate due to the incrementation of handover counters for each request sent, leading to unreliable statistics, as multiple requests are made for a single handover event, which complicates the computation of handover performance metrics.
Innovation Solution
Modifying the handover counter operation to increment the counter only once for a single wireless device regardless of the number of conditional handover requests sent or received, ensuring accurate statistics by treating multiple requests as a single handover event.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the handover counter is incremented for each handover request sent to multiple target radio base stations in conditional handovers, then the count reflects all handover requests, but the statistics computed based on the count become inaccurate because multiple requests relate to a single handover event
Solution Approach 1:
The patent applies preliminary action by configuring multiple candidate target cells in advance for conditional handover, allowing the wireless device to store handover commands and execute them when conditions are met. This preparation phase enables accurate statistics computation by treating multiple requests as a single handover event, rather than incrementing the counter for each individual request.
2Adaptability or versatility
If multiple handover requests are sent to different target radio base stations for a single handover event, then more handover options are available, but the handover counter incrementation becomes complex and statistics computation becomes unreliable
Solution Approach 1:
The patent segments the handover process into distinct phases: configuration of multiple candidate target cells, storage of handover commands, condition evaluation, and execution. This segmentation allows the system to maintain multiple handover options while computing statistics reliably by identifying and counting only the actual executed handover events, not the intermediate configuration requests.
3Measurement precision
If the handover counter is incremented once per wireless device regardless of the number of conditional handover requests, then accurate statistics can be computed, but the counting mechanism becomes less reflective of the actual number of handover requests sent
Solution Approach 1:
The patent introduces an intermediary mechanism that distinguishes between configured candidate target cells and actual handover execution. The handover counter is incremented only when a handover command is actually executed, not when candidates are configured. This intermediary approach preserves accurate handover attempt statistics while maintaining information about the conditional handover process through separate configuration messaging.
Data Source
AI summary
A radio base station in a mobile communication network sends a handover request message to multiple target base stations to initiate handover of a wireless device. The radio base station maintains one or more handovers counters used for monitoring and evaluating performance. The base station receives one or more handover response messages from respective target base stations. In response to receiving the one or more handover response messages, the base station increments a handover counter associated with the wireless device once regardless of a number of the handover response messages received.