Antenna Configuration Reporting for Cell Identification
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Solution Overview
Problem
Conventional cellular communication systems face challenges in accurately performing handover operations due to overlapping radio signals and the recycling of cell identifiers, which can lead to confusion and inefficient target cell selection during neighbor cell measurements.
Innovation Solution
The implementation of an apparatus and method that allows terminal devices to transmit measurement reports including cell identifiers and antenna configurations, enabling network elements to determine the location and unambiguously identify cells, and adjust beamforming configurations for efficient handover and neighbor cell measurements using spatial directivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell identifiers are recycled to reuse spectrum resources, then resource utilization efficiency is improved, but cell identification accuracy deteriorates due to ambiguity in neighbor cell measurements
Solution Approach 1:
The patent introduces a new dimension (spatial dimension via antenna configuration) to distinguish cells beyond their identifiers. By reporting antenna configuration information alongside cell measurements, the system creates an additional differentiation parameter that resolves identifier ambiguity while preserving identifier recycling benefits
2Measurement precision
If beamforming configurations are adjusted for accurate cell identification, then cell measurement accuracy is improved, but signaling overhead increases due to additional antenna configuration reporting
Solution Approach 1:
The patent applies partial action by selectively reporting antenna configuration information only when identifier ambiguity exists. The system determines whether to include antenna configuration based on whether the measured cell identifier corresponds to a unique cell, thereby providing enhanced accuracy only when needed while minimizing unnecessary signaling overhead
3Reliability
If antenna configurations are reported for every cell measurement, then handover decision accuracy is improved, but device complexity increases due to additional measurement parameters
Solution Approach 1:
The terminal device determines whether to report antenna configuration based on network configuration and identifier uniqueness. When the cell identifier uniquely identifies a cell, only basic measurement parameters are reported. When ambiguity exists, the device then reports antenna configuration information, thereby achieving high reliability only when necessary while reducing device complexity
Data Source
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AI summary
This document discloses a solution for performing measurements by a terminal device. According to an aspect, the terminal device transmits a measurement report to a serving cell, the measurement report comprising a cell identifier of a measured cell and an antenna configuration used by the terminal device to measure the cell. Then, the terminal device receives a message comprising information on a cell and/or a beam of the terminal device.