NTN Paging in Discontinuous Coverage via Timing Control
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Solution Overview
Problem
Wireless communication systems face challenges in managing and optimizing finite wireless channel resources due to signal attenuation or blocking in complex and dynamic environments, particularly in non-terrestrial networks (NTNs) with discontinuous coverage, leading to inefficiencies in power consumption and spectral efficiency.
Innovation Solution
The method involves a network entity communicating with a user equipment (UE) and a core network by sending or receiving radio paging information indicating cell coverage information or geographic area identifiers, allowing the network to delay paging until the UE is in coverage with the NTN, thereby optimizing spectral efficiency and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network continuously pages the UE in discontinuous coverage, then the UE can be reached, but spectral efficiency deteriorates and power consumption increases
Solution Approach 1:
The network entity obtains coverage area information indicating the UE's expected coverage status in advance. Based on this preliminary information, the network determines optimal paging timing to ensure the UE is in coverage when paging occurs, avoiding wasted paging attempts during coverage gaps.
Solution Approach 2:
The network dynamically adjusts paging strategies based on real-time coverage status information. The system transitions from static continuous paging to dynamic conditional paging, where paging is triggered only when the UE is expected to be in coverage, optimizing resource utilization.
2Reliability
If the network continuously pages the UE in discontinuous coverage, then the UE can be reached, but power consumption increases
Solution Approach 1:
The network entity obtains coverage area information indicating the UE's expected coverage status in advance. Based on this preliminary information, the network determines optimal paging timing to ensure the UE is in coverage when paging occurs, avoiding wasted paging attempts during coverage gaps.
Solution Approach 2:
The network dynamically adjusts paging strategies based on real-time coverage status information. The system transitions from static continuous paging to dynamic conditional paging, where paging is triggered only when the UE is expected to be in coverage, optimizing resource utilization.
3Device complexity
If the network uses traditional paging mechanisms in NTN, then the system is simple, but it cannot handle discontinuous coverage efficiently
Solution Approach 1:
The network entity performs multiple functions: it monitors coverage status, determines paging timing, and executes paging operations. This multi-functional approach handles discontinuous coverage efficiently while maintaining relatively simple system architecture by consolidating these functions in the existing network entity.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for paging in discontinuous coverage. A method that may be performed by a network entity includes communicating with a user equipment (UE) and a core network: and sending or receiving radio paging information indicating at least one of cell coverage information or an identifier associated with a geographic area in which the UE is located, wherein the geographic area is in a coverage path of a non-terrestrial network (NTN).