NTN Moving Cell Broadcast Area Signaling for Targeted MBS Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems struggle to effectively signal multicast/broadcast services (MBS) service areas for earth moving cells in non-terrestrial networks (NTN), as satellite footprints cover larger areas than terrestrial networks, making it difficult to target specific regions within NTN cells.
Innovation Solution
User equipment (UE) processors receive intended service area information for broadcast services, determining the geographic area and time intervals for receiving or refraining from receiving services based on location and time, using satellite ephemeris data to calculate cell coverage areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite footprints cover large areas in NTN, then coverage area is improved, but difficulty in targeting specific regions within NTN cells increases
Solution Approach 1:
The patent divides the large NTN cell coverage area into multiple intended service areas, each with specific geographic boundaries and time intervals. This segmentation allows the system to target specific regions within the broader satellite footprint by assigning different service areas to different broadcast services, thereby resolving the difficulty of targeting specific regions while maintaining large coverage capability.
2Adaptability or versatility
If broadcast services are provided across entire NTN cell coverage, then service availability is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent applies local quality by assigning different intended service areas to different broadcast services within the same NTN cell. Each service is configured with specific geographic area information and time interval parameters, allowing broadcast services to be provided only in specific local regions and time periods rather than uniformly across the entire cell coverage, thereby improving resource utilization efficiency while maintaining service availability where needed.
3Ease of operation
If UE receives all broadcast services in NTN cell, then service accessibility is improved, but processing complexity and energy consumption increase
Solution Approach 1:
The patent implements preliminary action by having the network pre-configure intended service area information and time interval parameters for each broadcast service before UE receives the services. UE processors use this pre-provided information to determine whether to receive or refrain from receiving specific broadcast services based on their current location and time, simplifying the reception decision process and reducing processing complexity and energy consumption compared to evaluating all available services continuously.
Data Source
AI summary
Disclosed are signalling designs for configuring intended service area for an earth moving cell in an NTN and methods for a UE to receive MBS broadcast service. A UE receives from a base station intended service area information for one or more broadcast services of a moving cell. The intended service area information for a broadcast service includes time information to indicate when the moving cell provides the broadcast service in the intended service areas. The UE determines an intended service area of a target broadcast service among the one or more broadcast services of the moving cell based on the intended service area information associated with the target broadcast service. The UE determines a location of the UE. The UE determines to receive the target broadcast service from the moving cell based on the intended service area of the target broadcast service and the location of the UE.