On-Demand System Information Delivery via Targeted Beam Sweeping
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Solution Overview
Problem
Inefficient and unreliable delivery of on-demand system information (SI) in 5G networks due to beam sweeping through all available beams, which can miss moving user equipment (UEs) and increase resource usage.
Innovation Solution
User equipment (UE) requests on-demand system information blocks (SIBs) by specifying beam sweeping parameters based on its mobility and signal strength, allowing the base station to optimize beam sweeping for efficient delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam sweeping is performed through all available beams to deliver on-demand system information, then delivery coverage is improved, but resource consumption increases and delivery reliability decreases when UE moves between beams
Solution Approach 1:
The patent applies local quality by transitioning from uniform beam sweeping across all beams to targeted beam selection based on UE-specific characteristics. The base station determines a subset of beams tailored to each UE's mobility pattern, current beam association, and historical behavior, thereby concentrating resources where they are most needed rather than uniformly distributing them across all beams.
Solution Approach 2:
The patent implements dynamics by making beam selection adaptive and time-varying rather than static. The base station continuously updates the subset of beams based on changing UE mobility patterns, current beam associations, and network conditions. This dynamic adaptation allows the system to respond to UE movement and changing requirements, improving both reliability and efficiency.
2Area of stationary object
If beam sweeping is performed through all available beams, then signal coverage is improved, but delivery time increases and resource usage increases
Solution Approach 1:
The patent applies the extraction principle by removing unnecessary beams from the sweeping process. Instead of sweeping through all available beams, the base station identifies and extracts only the relevant subset of beams that are likely to reach the UE based on its mobility pattern and current association. This extraction maintains adequate coverage while eliminating time-wasting transmissions on irrelevant beams.
Solution Approach 2:
The patent implements partial action by performing beam sweeping on a selective subset of beams rather than all beams. The base station determines an optimal number of beams to sweep based on UE mobility characteristics, applying just enough sweeping action to achieve reliable delivery without the excessive action of covering all possible beams. This partial approach reduces delivery time while maintaining sufficient coverage.
3Loss of energy
If system information is delivered via a single beam to reduce resource usage, then resource efficiency is improved, but delivery reliability decreases when UE moves to another beam coverage area
Solution Approach 1:
The patent applies dynamics by making the beam selection process adaptive rather than static. The base station determines the subset of beams based on real-time UE mobility patterns and current beam associations, allowing the system to dynamically adjust between single-beam efficiency and multi-beam reliability depending on UE behavior. This dynamic approach optimizes the trade-off between resource efficiency and delivery reliability.
Solution Approach 2:
The patent implements preliminary action by proactively determining the subset of beams before actual information delivery based on predicted UE mobility patterns. The base station uses historical data and current state to pre-select beams that are most likely to reach the UE, preparing the transmission path in advance rather than reacting after UE movement occurs. This preliminary determination improves both efficiency and reliability.
Data Source
AI summary
The disclosed technology is directed towards user equipment requests for delivery of other system information block (SIB) data from a base station, in which one or more beams for transmitting the other SIB data can be specified by the user equipment based on its state data. Transmitting via only selected beams saves network resources, generally without increasing user equipment retry requests. The user equipment can determine which beam(s) it detects based on beam signal strength data, and determine mobility data of the user equipment. The user equipment determines beam sweeping delivery data based on the detected beam signal strength data and/or the mobility data, and associates the beam sweeping request data with the request for the other SIB data. The network selects one or more beams for sweeping to deliver the other SIB data based on the beam sweeping request data of the user equipment, and possibly other user equipment.