User Device Beamforming via Downlink Feedback
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Solution Overview
Problem
Current wireless communication systems face performance issues due to user devices transmitting data using outdated or non-applicable beam configurations, leading to compromised network performance and interference, especially during handoffs between base stations as devices change locations.
Innovation Solution
User devices determine a transmission configuration based on the beam characteristics of incoming downlink signals from the base station and apply this configuration to their transceivers to form optimized uplink beams, ensuring signal strength and direction alignment, thereby improving network performance and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the user device uses a different set of beams for uplink communications than the base station uses for downlink communications, then the user device can independently optimize its transmission, but network performance is compromised and interference increases
Solution Approach 1:
The user device receives downlink beams from the base station, analyzes their characteristics (direction, signal strength, configuration), and uses this feedback information to determine and configure its own uplink beams. This closed-loop feedback mechanism ensures the user device's independent beam configuration aligns with the base station's downlink beams, maintaining network performance while allowing device autonomy.
2Device complexity
If the user device uses outdated or non-applicable transmission configuration for beamforming, then device complexity is reduced, but signal strength is insufficient and interference with other beams increases
Solution Approach 1:
The user device performs preliminary analysis of the downlink beams received from the base station before configuring its uplink transmission. By examining the downlink beam characteristics in advance and determining the appropriate transmission configuration based on this analysis, the device prepares optimal uplink beam settings beforehand. This preliminary action ensures the device uses current, applicable configurations rather than outdated ones, reducing interference while managing complexity.
3Area of stationary object
If the base station hands off communication to another base station as the user device changes location, then coverage area is expanded, but beam configuration problems multiply
Solution Approach 1:
The user device autonomously monitors the characteristics of downlink beams from its serving base station and independently determines the appropriate transmission configuration for its uplink beams. During handoff scenarios, the device continues this self-service approach by analyzing the new base station's downlink beams and automatically adapting its configuration. This eliminates the need for complex centralized beam management during handoffs, allowing coverage expansion without multiplying configuration problems.
Data Source
AI summary
The present disclosure describes methods and apparatuses for forming beams that carry data transmitted from a user device to a base station. In some aspects, a transmission configuration is determined based on a set of beams downlinking the base station to the user device and carrying a set of data. The determined transmission configuration is the applied to a transceiver of the user device, which then transmits another set of data carried by another set beams uplinking the user device to the base station.