Wireless Device Scheduling for Neighbor Cell Measurement Alignment
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Solution Overview
Problem
Existing wireless communication systems face challenges in aligning wireless device and cellular network expectations and behaviors during neighbor cell measurements, leading to inefficient network resource and power consumption, as well as unexpected interference.
Innovation Solution
Configuring wireless devices to operate in accordance with specific expectations and requirements for neighbor cell measurements, including selecting reference signals and adjusting communication timing to align with serving cell operations, thereby reducing unexpected behavior and resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless devices perform neighbor cell measurements simultaneously with serving cell communication, then measurement accuracy is improved, but network resource waste and power consumption increase
Solution Approach 1:
The patent implements periodic action by scheduling neighbor cell measurements at specific time intervals and aligning them with periodic reference signals. The network configures measurement occasions that occur periodically, allowing the wireless device to perform measurements only at these predetermined times rather than continuously, thereby reducing power consumption while maintaining measurement accuracy through regular sampling of neighbor cell conditions.
Solution Approach 2:
The patent applies preliminary action by having the network pre-configure measurement configurations including reference signal resources, time/frequency locations, and measurement parameters before the wireless device performs measurements. This advance configuration allows the device to efficiently execute measurements without needing to dynamically negotiate parameters during measurement occasions, reducing both power consumption and network resource waste.
2Measurement precision
If wireless devices perform neighbor cell measurements simultaneously with serving cell communication, then measurement accuracy is improved, but unexpected interference occurs
Solution Approach 1:
The patent applies segmentation by dividing the measurement process into distinct, non-overlapping time resources. The network configures specific time slots and reference signal occasions dedicated to neighbor cell measurements, separating them from serving cell communication resources. This resource segmentation prevents interference between measurement activities and normal communication operations, as the wireless device can switch between measurement and communication modes without conflict.
Solution Approach 2:
The patent uses the network configuration system as an intermediary to coordinate between measurement requirements and communication operations. The network acts as a mediator by allocating dedicated reference signal resources and measurement occasions that are independent of serving cell data transmissions. This intermediary configuration ensures that measurements and communications occur in harmonized time-frequency resources, eliminating unexpected interference.
3Productivity
If wireless devices adjust communication timing to align with reference signals, then network efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by enabling the wireless device to autonomously determine its timing alignment based on pre-configured reference signal parameters. The device uses the provided reference signal locations and timing information to automatically adjust its measurement and communication timing without requiring continuous network control or complex coordination protocols. This self-service timing alignment simplifies the overall system while maintaining network efficiency.
Data Source
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AI summary
This disclosure relates to techniques for aligning wireless device and cellular network expectations and behavior in conjunction with neighbor cell measurements in a wireless communication system. A wireless device may determine that a reference signal is configured for a neighbor cell measurement when communication with the serving cell is also configured. The wireless device may determine whether the reference signal for the neighbor cell measurement is configured with same or different subcarrier spacing as the communication with the serving cell. The wireless device may select one or more of the reference signal for the neighbor cell measurement or the communication with the serving cell to receive based at least in part on whether the reference signal for the neighbor cell measurement is configured with same or different subcarrier spacing as the communication with the serving cell.