UE Beam Control for Multi-Transmission Point SILGI Optimization
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Solution Overview
Problem
Existing telecommunication systems lack effective methods for enhancing multi-transmission point signal reception in user equipment (UE) to maximize signal-to-inter-layer-group-interference ratio (SILGI) in mmWave bands, particularly for 4-layer MIMO reception, which is crucial for improved reliability and throughput in 5G networks.
Innovation Solution
The apparatus and method involve determining and steering receiver spatial filters to maximize the SILGI ratio by performing coarse and refined narrow beam refinements, measuring angles of arrival (AoAs) to optimize signal power and interference, and sending indications to the network node for beam control, using a single mmWave antenna array module for simultaneous reception of multiple downlink signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple downlink signals are received simultaneously from multiple transmission points on a single mmWave antenna array module, then signal reception capability and throughput are improved, but inter-layer-group interference increases and signal quality deteriorates
Solution Approach 1:
The patent segments the reception process into two distinct phases: coarse beam refinement for initial signal acquisition and refined beam refinement for interference mitigation. This segmentation allows the system to first establish signal reception from multiple transmission points and then separately optimize for interference reduction, resolving the contradiction between receiving multiple signals and managing interference.
Solution Approach 2:
The patent performs preliminary coarse beam refinement to establish initial signal reception from multiple transmission points before conducting refined beam refinement. This preliminary action ensures that signals are acquired first, and then interference is mitigated through subsequent optimization, allowing both signal reception and interference management to be achieved effectively.
2Reliability
If receiver spatial filters are steered to maximize desired signal reception, then signal power is improved, but inter-layer-group-interference increases
Solution Approach 1:
The patent implements a dynamic two-stage beam refinement process where receiver spatial filters are first steered for maximum signal power during coarse refinement, then re-steered for interference mitigation during refined refinement. This dynamic adjustment of filter steering in two phases allows the system to sequentially optimize for signal reception and then for interference reduction, resolving the contradiction between these two objectives.
Solution Approach 2:
The patent employs periodic action by alternating between coarse beam refinement (signal maximization) and refined beam refinement (interference minimization) in a structured sequence. This periodic switching between two optimization modes allows the system to achieve both high signal reception quality and low interference levels through repeated cycles of signal acquisition followed by interference mitigation.
3Reliability
If beamforming is optimized for multi-transmission point scenarios, then signal to inter-layer-group-interference ratio is improved, but device complexity increases
Solution Approach 1:
The patent segments beamforming optimization into two distinct algorithms: coarse beam refinement for initial signal acquisition and refined beam refinement for SILGI optimization. This segmentation breaks down the complex task of multi-transmission point beam control into manageable stages, reducing overall device complexity while achieving high SILGI ratios through systematic progression from signal acquisition to interference mitigation.
Solution Approach 2:
The patent performs preliminary coarse beam refinement to establish basic signal reception before implementing the more complex refined beam refinement for SILGI optimization. This preliminary action simplifies the overall process by first establishing signal presence and then applying advanced optimization only when needed, reducing computational complexity while maintaining high SILGI performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances signal reception quality, reduces interference, and improves throughput and reliability in 5G networks by optimizing beamforming for multi-transmission point scenarios, particularly in mmWave bands.
Implementation Method 1
steer one or more receiver spatial filters in order to maximize a signal to inter-layer-group-interference, SILGI, ratio
Implementation Method 2
The amplitude and phases are chosen for each antenna element to obtain constructive interference along the directivity
Implementation Method 3
The phased delay antenna uses variable constructive interference of wavefronts to move the beam
Data Source
AI summary
An apparatus is provided that includes at least receiver circuitry, a processor, and memory. The apparatus also includes a plurality of directional antennas configured to simultaneously receive different downlink signals for each polarization. The apparatus further includes control circuitry for controlling processes for beam sweeping, beam refinement, and selecting a beam pair that maximizes signal strength while minimizing inter-layer-group interference. A portable electronic device and a stationary electronic device that include the apparatus are also provided. A method carried out by means, such as the apparatus, is also provided. A computer program product, such as a non-transitory computer readable medium, for causing an apparatus to carry out such a method is also provided.