Satellite Paging Timing Using Position-Aware Forwarding
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Solution Overview
Problem
In satellite communication networks using a store-and-forward mode, where the service link and feeder link are not simultaneously available, existing paging methods fail to accurately deliver messages to terminals due to the satellite's distance from the terminal's registered area, leading to potential paging failures.
Innovation Solution
A method where a core network element transmits a first paging message carrying position-associated or time-associated information to a network device, enabling it to determine the timing for transmitting a second paging message, ensuring the message reaches the terminal despite store-and-forward mode limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a satellite uses store-and-forward mode where service link and feeder link are not simultaneously available, then the satellite can store and forward data, but paging messages cannot be accurately delivered to terminals due to the satellite's distance from the terminal's registered area
Solution Approach 1:
The core network element performs preliminary actions by determining the optimal timing for paging message transmission based on satellite position information and terminal registered area data before the satellite actually transmits the paging message. This advance planning ensures the paging message is transmitted at the most appropriate moment when the satellite is optimally positioned relative to the terminal's registered area, thereby improving delivery reliability and preventing paging failures in store-and-forward mode satellite communications.
2Loss of time
If the satellite transmits paging messages immediately upon receiving them, then transmission delay is reduced, but the satellite may be too far from the terminal's registered area resulting in paging failures
Solution Approach 1:
The core network element performs preliminary calculations to determine the optimal transmission timing by analyzing satellite position information and terminal registered area data before the actual paging message transmission. This advance timing determination allows the system to plan the transmission in advance while still maintaining low delay, ensuring the satellite transmits the paging message at the optimal moment when it is closest to the terminal's registered area, thus balancing low delay with high delivery success rate.
Solution Approach 2:
The system uses feedback from satellite position information and terminal registered area data to dynamically adjust the paging message transmission timing. The core network element continuously monitors satellite movement and terminal location information, using this feedback to determine the optimal transmission moment, thereby ensuring the paging message is sent when the satellite is optimally positioned, improving both timing accuracy and delivery reliability without excessive delay.
Data Source
AI summary
Provided is a method for transmitting paging messages. The method is performed by a core network element. The method includes: transmit a first paging message; wherein the first paging message is configured for a network device to determine a timing for transmitting a second paging message, and the first paging message carries at least one of: position-associated information of a paged terminal or time-associated information.