Coordinator Unit Handover Prediction for Wireless Systems
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Solution Overview
Problem
Legacy handover procedures in wireless communication systems, such as LTE and 3GPP, often result in service disruptions for fast-moving objects due to radio-link failures and inefficient resource management, leading to handover ping-pongs and failures.
Innovation Solution
A wireless communication system with a coordinator unit that predicts and manages handovers by compiling an expectation list of base stations along a user equipment's potential travel route, informing these stations of impending handovers, and maintaining them in an attention mode to ensure seamless data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If legacy handover procedures are used, then handover signaling is simplified, but service continuity is disrupted due to radio-link failures
Solution Approach 1:
The coordinator unit predicts future handover events based on UE mobility patterns and prepares target base stations in advance by providing handover information and placing them in attention mode. This preliminary preparation ensures that target base stations are ready to immediately take over service when handover occurs, preventing radio-link failures and maintaining service continuity without complicating the actual handover execution
2Reliability
If base stations are kept in attention mode for possible handovers, then handover readiness is improved, but network resource utilization decreases
Solution Approach 1:
Base stations are placed in attention mode only after the coordinator unit has identified them as potential handover targets based on predicted UE trajectories. This selective preparation ensures that base stations enter attention mode only when genuinely needed, rather than maintaining constant readiness, thus improving handover success rates while avoiding unnecessary resource consumption from premature or unnecessary attention mode activation
Solution Approach 2:
The system uses UE mobility information and coordination unit predictions to automatically determine when and where base stations should enter attention mode, eliminating the need for continuous monitoring and manual resource allocation. This self-regulating mechanism optimizes the balance between handover readiness and resource utilization by activating attention mode only in predictable handover scenarios
Data Source
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AI summary
The invention refers to a wireless communication system (1 ) comprising a plurality of base-stations (2, 2', 2") covering different communication areas (3, 3', 3") and a coordinator unit (4). The coordinator unit (4) compiles an expectation list with at least one base-station (2, 2', 2") serving as a coordinated base-station (2, 2', 2") for a possible handover concerning a user equipment (10) based on information about the user equipment (10). The coordinator unite (4) provides the at least one base-station (2, 2', 2") of the expectation list with handover information concerning the possible handover. The at least one base-station (2, 2', 2") of the expectation list goes into an attention mode after receiving the handover information from the coordinator unit (4). The invention also refers to a corresponding method.