NWDAF Satellite Coverage Determination for UE Power Saving
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Solution Overview
Problem
Satellite access in wireless communication networks experiences non-continuous coverage due to insufficient satellites or interrupted beams, leading to challenges in accurately determining satellite coverage for user equipment (UE), which affects power consumption and service efficiency.
Innovation Solution
An application function (AF) requests satellite coverage information from a Network Data Analytics Function (NWDAF) to accurately determine UE coverage, enabling effective service interaction and power management based on satellite signal availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite access is used to provide network services, then network coverage area is improved, but coverage continuity deteriorates due to insufficient satellites or interrupted beams
Solution Approach 1:
The system dynamically determines satellite coverage information by obtaining location information of the UE and ephemeris information of satellites, then calculating whether the UE is within satellite coverage at different time points. This dynamic approach allows the network to adapt to changing satellite positions and provide continuous service by switching between different satellites as they move into and out of coverage areas.
2Productivity
If the network continuously determines satellite coverage for UE, then service effectiveness is improved, but power consumption increases
Solution Approach 1:
The network performs preliminary determination of satellite coverage information by calculating coverage status at specific time points based on UE location and satellite ephemeris data. This allows the network to proactively identify when a UE will enter or exit satellite coverage, enabling advance service preparation and avoiding continuous monitoring, thus reducing power consumption while maintaining service effectiveness.
3Reliability
If satellite beam interruption is prevented, then coverage continuity is improved, but system complexity increases due to need for multiple satellites and coordination
Solution Approach 1:
The system uses feedback from UE location information and satellite ephemeris data to continuously update satellite coverage status. The network function receives location information from the UE, obtains current satellite positions through ephemeris information, and determines coverage status by comparing UE location with satellite coverage areas. This feedback mechanism enables automatic coverage maintenance without complex manual coordination between multiple satellites.
Data Source
AI summary
An information processing method includes sending a request to a network data analytics function (NWDAF), where the request is used for requesting satellite coverage information of a user equipment (UE).