Smart Repeater Adaptive Beamforming for mmWave Coverage
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Solution Overview
Problem
The challenge in wireless communication systems is achieving peak data rates at mmWave frequencies due to signal attenuation and blockage caused by obstacles, leading to coverage limitations and poor outdoor-to-indoor connectivity, which existing technologies struggle to address effectively.
Innovation Solution
The implementation of smart repeaters with adaptive beamforming capabilities that use a prediction engine to determine the location of user equipment (UE) and select the appropriate beam for signal transmission, enhancing signal strength and quality by directing beams precisely to UE locations indoors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mmWave frequencies are used to achieve high data rates, then bandwidth and antenna array gain are improved, but signal attenuation and blockage from obstacles worsen coverage
Solution Approach 1:
The patent introduces smart repeaters as intermediary devices between the mmWave base station and indoor user equipment. These repeaters receive the attenuated mmWave signal, amplify it, and retransmit it to extend coverage into indoor environments, effectively mediating the signal transmission between the high-frequency source and the obstructed target zone.
Solution Approach 2:
The patent segments the wireless communication system into multiple functional components: mmWave base stations for high-capacity backhaul, smart repeaters for signal extension and local beamforming, and coordinated multipoint transmission nodes. This segmentation allows each component to operate at optimal frequencies and powers, with sub-6 GHz repeaters providing reliable coverage extension without requiring the entire system to use vulnerable mmWave frequencies for indoor penetration.
2Reliability
If additional base stations are deployed to improve indoor coverage, then coverage is improved, but system complexity and deployment cost worsen
Solution Approach 1:
The smart repeater is designed as a multi-functional device that simultaneously performs signal amplification, beamforming, and coordination with the mmWave network. It can operate in different modes (amplify-and-forward, decode-and-forward) and supports multiple access technologies, making it a universal solution that replaces the need for separate dedicated indoor base stations while providing enhanced functionality.
Solution Approach 2:
The patent employs coordinated multipoint transmission where multiple geographically separated transmission nodes create virtual copies of the same signal stream to user equipment. This copying approach provides diversity gain and improved reliability without requiring a single high-power base station, effectively distributing the coverage function across multiple simpler nodes.
3Reliability
If beamforming is used to direct signals precisely, then signal strength at target location is improved, but signal processing overhead increases
Solution Approach 1:
The smart repeater performs preliminary beamforming operations based on predicted user equipment locations and historical movement patterns. By pre-calculating and preparing beam directions before actual data transmission is required, the system reduces real-time processing overhead while maintaining precise signal targeting. The prediction engine prepares beamforming weights in advance based on anticipated user positions.
Solution Approach 2:
The system implements self-service beamforming where the smart repeater autonomously adjusts its beam directions and weights based on feedback from user equipment and predictions of user movement. The prediction engine continuously updates beamforming parameters without requiring extensive manual configuration or centralized control, allowing the system to self-optimize beam directions in real-time based on observed patterns and current conditions.
Data Source
AI summary
A method for positioning based system design for smart repeaters with adaptive beamforming capabilities is implemented by an electronic device. In certain embodiments, the electronic device is a smart repeater. The method includes obtaining user equipment (UE) location information indicating a location of a UE. The method includes translating, based on a prediction engine, the UE location information to a beam index associated with a beam to serve the UE at the location of the UE. The method includes receiving, from an external communication device via a first wireless communication channel, traffic intended for the UE. The method includes forward-transmitting, via a second wireless communication channel, the traffic via the beam formed at a transmit (TX) antenna of the electronic device.