Satellite Transmission Control for Store-and-Forward Latency
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Solution Overview
Problem
The challenge in Non Terrestrial Networks (NTN) is controlling data transmission in the store and forward mode, where the service link and feeder link cannot be available simultaneously, leading to increased latency that cannot meet the latency requirements of services like Enhanced Mobile Broadband (eMBB), Ultra Reliable Low Latency Communication (URLLC), and massive Machine Type of Communication (mMTC).
Innovation Solution
A method and apparatus for transmission control that involves a terminal device and network device to receive and transmit configuration information indicating whether data of a service or Radio Bearer (RB) is allowed to be transmitted using a store and forward mode of a satellite, based on latency requirements, using first configuration information to manage data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If store and forward mode is used for satellite communication, then service link and feeder link cannot be available simultaneously, but this increases transmission latency
Solution Approach 1:
The patent implements dynamic switching between store-and-forward mode and transparent relay mode based on service requirements. The network device can flexibly adjust the satellite communication mode in real-time, allowing latency-tolerant services to use store-and-forward mode while latency-sensitive services use transparent relay mode, thus resolving the contradiction between mode flexibility and transmission latency.
Solution Approach 2:
The patent changes the operational parameters of the satellite communication system by introducing configurable mode selection. Different services are assigned different transmission modes based on their latency requirements, transforming the fixed store-and-forward mode into a variable parameter that can be adjusted to meet different service quality demands.
2Length of stationary object
If store and forward mode is used to provide unrestricted geographical coverage, then communication distance is extended, but latency requirements of eMBB, URLLC, and mMTC services cannot be met
Solution Approach 1:
The patent segments the satellite communication service into different modes based on service requirements. Latency-sensitive services (eMBB, URLLC, mMTC) are routed through transparent relay mode for low-latency communication, while latency-tolerant services can utilize store-and-forward mode. This segmentation allows the system to provide extended geographical coverage while meeting diverse latency requirements of different services.
3Reliability
If first configuration information is used to control data transmission in store and forward mode, then transmission compliance with latency requirements is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service mechanisms where the network device automatically manages the configuration information and mode selection based on service requirements. The system autonomously determines which services should use store-and-forward mode versus transparent relay mode, reducing manual configuration complexity while ensuring latency requirement compliance through automated policy enforcement.
Data Source
AI summary
Provided is a method for transmission control. The method includes that a terminal device receives first information from a network device, where the first information is used for indicating whether data of a first service or of a first Radio Bearer (RB) is allowed to be transmitted using a store and forward mode of a satellite. There is also provided a corresponding terminal device and a corresponding network device.