Satellite Link Slot Aggregation for Short Service Windows
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Solution Overview
Problem
Satellite communication is limited by the finite time available for service due to satellite altitude and movement, leading to potential delays and reduced packet transmission success rates.
Innovation Solution
An electronic device determines whether to apply slot aggregation based on the service duration time of a non-terrestrial network, using system information blocks, to optimize data transmission and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If slot aggregation is applied to transmit multiple packets simultaneously, then packet transmission probability increases within limited time, but power consumption increases
Solution Approach 1:
The patent changes the parameter of slot aggregation configuration based on the service duration time of the non-terrestrial network. When service duration time is short, slot aggregation is applied to increase transmission probability. When service duration time is sufficient, slot aggregation is not applied to conserve power. This dynamic parameter adjustment resolves the contradiction between transmission probability and power consumption.
2Loss of time
If slot aggregation is applied to simultaneously schedule multiple slots, then transmission delay is reduced, but device complexity increases
Solution Approach 1:
The patent implements dynamic slot aggregation configuration based on service duration time conditions. The system adaptively adjusts whether to apply slot aggregation rather than using a fixed configuration, allowing it to reduce transmission delay when needed while avoiding unnecessary complexity when service duration is sufficient.
3Reliability
If HARQ retransmission is used to increase packet reception success rate, then transmission reliability improves, but service time is consumed due to satellite movement and altitude limitations
Solution Approach 1:
The patent applies slot aggregation as a preliminary action when service duration time is short, scheduling multiple slots in advance to ensure packet transmission completion before the satellite moves out of range. This prevents the need for time-consuming HARQ retransmissions by proactively ensuring successful transmission within the limited service window.
Data Source
AI summary
An electronic device includes: memory storing instructions; and one or more communication processors configured to execute the instructions, wherein the instructions, when executed by the one or more processors individually or collectively, cause the electronic device to: acquire information on a service duration time of a non-terrestrial network having an established communication connection, based on a system information block (SIB); and determine whether to apply slot aggregation, based on a result of a comparison between the service duration time of the non-terrestrial network acquired based on the SIB and a preset first time, wherein the slot aggregation includes simultaneously performing scheduling for a plurality of slots, and the preset first time is a time spent for completing transmission of a predetermined number of packets to the non-terrestrial network.