mmW WTRU Measurement Gap Patterns for Interference Management
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing millimeter wave (mmW) spectrum usage due to high propagation loss and interference, particularly in dense deployment scenarios, where existing solutions struggle to optimize beam patterns and interference mitigation effectively.
Innovation Solution
The implementation of a mmW capable wireless transmit/receive unit (WTRU) that sends measurement gap request messages to a mmW base station, allowing for dynamic configuration of measurement gap patterns based on capabilities and status, enabling efficient beam measurements and interference management through interleaved wide and narrow beam patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If directional antennas are used to concentrate transmitted energy on the intended receiver, then signal strength is improved, but device complexity increases
Solution Approach 1:
The patent segments the beam measurement process into distinct measurement gap patterns (first pattern for serving cell, second pattern for neighbor cells) that are interleaved in time. This segmentation allows the system to manage complex directional antenna operations by dividing them into manageable, time-separated tasks, reducing the immediate complexity burden while maintaining signal strength benefits.
Solution Approach 2:
The patent implements dynamic beam management where the WTRU and base station adaptively switch between wide beams and narrow beams based on measurement requirements. The measurement gap patterns are dynamically configured and interleaved, allowing the system to optimize signal strength through directional antennas while managing complexity through flexible, adaptive operation rather than fixed complex configurations.
2Measurement precision
If measurement gap patterns are configured for beam measurements, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent employs periodic measurement gap patterns where measurements are taken at regular, predetermined intervals rather than continuously. The first measurement gap pattern for serving cell measurements and the second pattern for neighbor cell measurements are both periodic and interleaved, allowing the system to achieve precise beam measurements while minimizing time loss by measuring only at specific periodic moments rather than continuously.
Solution Approach 2:
The patent configures measurement gap patterns in advance through signaling between the WTRU and base station. The measurement gap requirements are determined based on WTRU capabilities and measurement status before actual measurements begin. This preliminary configuration optimizes the measurement schedule to achieve precise beam measurements while minimizing time loss by pre-planning the most efficient measurement opportunities.
3Productivity
If multiple measurement gap patterns are interleaved for simultaneous measurements, then productivity is improved, but device complexity increases
Solution Approach 1:
The patent segments the measurement tasks into distinct first and second measurement gap patterns, with the first pattern dedicated to serving cell measurements and the second pattern to neighbor cell measurements. These segmented patterns are interleaved in time, allowing simultaneous measurement productivity while managing complexity through clear separation of measurement responsibilities into distinct time-separated patterns.
Solution Approach 2:
The patent implements feedback mechanisms where the WTRU sends measurement gap request messages to the base station, and the base station responds with measurement gap configuration. The measurement gap patterns are configured based on WTRU capabilities and measurement status feedback. This feedback loop allows the system to achieve high measurement productivity through interleaved patterns while managing complexity through adaptive configuration based on actual system state.
Data Source
AI summary
Systems, methods, and instrumentalities are disclosed for a wireless transmit/receive unit (WTRU) comprising a processor configured to receive a set of gap patterns, and measurement activities associated therewith, wherein each of the gap patterns includes an identifier for the measurement activity to be performed, and measure a signal pursuant to at least one of the gap patterns to obtain a measurement.