Progressive Paging Beam Patterns for NTN Signaling Overhead
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Solution Overview
Problem
In 5G wireless communication systems, particularly in Non-Terrestrial Networks (NTNs), the conventional paging method is inefficient due to the large geographical area covered by each satellite, leading to increased signaling overhead and potential paging failures.
Innovation Solution
The implementation of progressive paging, where the radio network node transmits a paging message using a series of progressively narrower and more focused beam patterns, dynamically adjusting the beam configuration based on response receipt or lack thereof, to reduce overhead while maintaining effective coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional paging method is used in NTN with large geographical coverage, then coverage area is improved, but signaling overhead increases and paging reliability deteriorates
Solution Approach 1:
The patent segments the large coverage area into multiple beam patterns with different beam widths. Instead of using a single wide beam to cover the entire area, the system divides the coverage into sectors and uses progressively narrower beams to target specific regions, reducing the signaling overhead required for paging while maintaining comprehensive coverage.
Solution Approach 2:
The patent applies local quality by using different beam patterns (wide beams for broad coverage, narrow beams for targeted paging) in different spatial regions. The beam pattern selection is adapted to local conditions, using wider beams when users are dispersed and narrower beams when users are concentrated, optimizing both coverage and signaling efficiency.
2Area of stationary object
If conventional paging method is used in NTN with large geographical coverage, then coverage area is improved, but paging reliability deteriorates
Solution Approach 1:
The patent implements dynamic beam pattern selection where the system adaptively chooses between wide and narrow beam patterns based on real-time conditions such as user distribution, response to paging messages, and network load. This dynamic adjustment improves paging reliability by selecting the most appropriate beam pattern for each paging scenario while maintaining broad coverage.
Solution Approach 2:
The patent incorporates feedback mechanisms where the system monitors paging responses and user equipment locations, then adjusts beam pattern selection accordingly. If paging responses are not received or are sparse, the system may switch to wider beam patterns to ensure coverage; if responses are concentrated, it switches to narrower beams for more reliable targeted paging.
3Quantity of substance
If progressive paging with focused beams is used, then paging overhead is reduced, but paging latency increases
Solution Approach 1:
The patent employs periodic action by implementing progressive paging with multiple beam patterns in sequence rather than simultaneously. The system first transmits paging messages using wide beam patterns, then progressively transitions to narrower beam patterns if responses are not received. This periodic approach reduces overall overhead by avoiding redundant transmissions while managing latency through structured retry intervals.
4Productivity
If progressive paging with focused beams is used, then resource efficiency is improved, but paging latency increases
Solution Approach 1:
The patent applies partial action by using focused narrow beam patterns only when necessary (when initial wide beam paging does not elicit responses), rather than always using the most resource-efficient narrow beams. This selective approach improves resource efficiency by avoiding unnecessary wide beam transmissions while accepting latency increases only when required for successful paging.
Data Source
AI summary
A radio network node may receive from a core network a beam pattern configuration and a progressive paging configuration comprising one or more paging subpattern indications. The node may calculate beams of the subpatterns based on information in the beam pattern configuration. The node may transmit a paging message according to indicated subpatterns according to an order in the progressive paging configuration. The progressive paging configuration may comprise one or more wait periods corresponding to the one or more subpattern indications. The node may wait during a wait period associated with a subpattern after transmitting the paging message according to the subpattern. If a response is not received, the node may transmit the paging message according to a next-in-order subpattern. If a response to the paging message transmitted during a subpattern is received by the node, paging may be stopped and a connection with the user equipment may be established.