Repeater Node Beam Change for Wireless Reliability
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Solution Overview
Problem
Wireless communication systems face interference and reliability issues due to beam misalignment and interference from neighboring base stations and user equipment, particularly when user equipment changes position, leading to dropped communications and service interruptions.
Innovation Solution
A repeater node performs a beam change operation from a first beam to a second beam based on a beam change delay time interval, which can be associated with subcarrier spacing or scheduling types, to maintain communication reliability and reduce interference by focusing signal energy in the correct direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam change operation is performed to adapt to user equipment position changes, then communication reliability is improved, but beam change delay time interval increases
Solution Approach 1:
The system performs preliminary beam change preparations by configuring multiple beams in advance and pre-calculating beam change parameters based on predicted user equipment movement trajectories. This allows the repeater node to execute beam changes with reduced actual delay while maintaining communication reliability during user equipment position changes.
Solution Approach 2:
The beam change delay time interval is made dynamic rather than fixed. The system adjusts the delay interval based on real-time conditions including user equipment movement speed, signal quality metrics, and network load. This dynamic adjustment optimizes the balance between communication reliability and time loss by extending delay when conditions permit and reducing delay when rapid adaptation is needed.
2Object-affected harmful factors
If directional beam communication is used to reduce interference, then signal quality is improved, but device complexity increases
Solution Approach 1:
The repeater node is designed with multi-functional beam handling capabilities that serve multiple purposes: interference reduction, signal quality enhancement, and adaptive communication. The same beamforming apparatus handles downlink and uplink communications, as well as serving multiple user equipment devices simultaneously, thereby reducing overall device complexity through consolidation of functions.
Solution Approach 2:
The repeater node acts as an intermediary between base stations and user equipment, centralizing the beam management complexity in a dedicated device that is specifically designed to handle beamforming operations. This intermediary approach simplifies the overall system architecture by concentrating complex beam control logic in one component rather than distributing it across multiple nodes.
3Reliability
If beam change operation is performed frequently to track user equipment movement, then communication reliability is improved, but productivity decreases
Solution Approach 1:
The system implements periodic beam change operations rather than continuous tracking. Beam changes are triggered at predetermined time intervals or when specific conditions are met (such as significant user equipment displacement). This periodic approach maintains communication reliability by periodically adapting to user equipment position changes while avoiding the productivity penalty of excessive frequent beam changes.
Solution Approach 2:
The system employs self-service beam management where the repeater node autonomously determines when beam changes are necessary based on received signal strength metrics and user equipment movement patterns. This self-service mechanism eliminates unnecessary beam changes that would reduce productivity while automatically performing required beam adjustments to maintain communication reliability.
Data Source
AI summary
This disclosure provides systems, apparatus, methods, and computer-readable media for beam switching by a repeater node that forwards communications from one of a first node or a second node to the other of the first node or the second node. For example, after a change of position by the second node, the first node may provide the repeater node an instruction to perform a beam change operation to communicate with the second node. In some aspects, performing the beam change operation by the repeater node may improve reliability of wireless communications, such as by focusing signal energy in a particular direction. Further, a beam change delay time interval or a scheduling of the beam change delay time interval may be selected based on scheduling associated with other nodes, which may reduce a number of messages sent to the repeater node (such as by reducing instructions to change beam directions).