Multicast Traffic Delegation Between Terrestrial and Non-Terrestrial Nodes
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Solution Overview
Problem
Existing 5G wireless communication systems face challenges in efficiently managing resource loads and ensuring reliable delivery of terrestrial traffic to user equipment, particularly in scenarios involving mobile devices, due to varying demands and performance requirements across different QoS classes like URLLC, eMBB, and mMTC.
Innovation Solution
A non-terrestrial radio network node facilitates the delivery of terrestrial traffic by receiving a delegated traffic delivery request, adjusting radio channel performance parameters based on terrestrial and non-terrestrial conditions, and transmitting the adjusted traffic to user equipment, including multicast broadcast services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-terrestrial radio network node receives and transmits delegated terrestrial traffic, then traffic delivery coverage and reliability are improved, but device complexity and network architecture complexity increase
Solution Approach 1:
The non-terrestrial radio network node acts as an intermediary that receives delegated traffic delivery requests from terrestrial radio network nodes, adjusts radio channel performance parameters, and transmits delegated traffic to user equipment. This mediator approach enables terrestrial traffic to be delivered through non-terrestrial networks, improving coverage and reliability while managing complexity through standardized delegation protocols.
2Productivity
If radio channel performance parameters are adjusted based on both terrestrial and non-terrestrial conditions, then traffic delivery efficiency is improved, but processing time and computational load increase
Solution Approach 1:
The non-terrestrial radio network node receives and processes delegated traffic delivery requests in advance, adjusting radio channel performance parameters before actual traffic transmission begins. This preliminary action includes receiving the request with terrestrial radio channel performance parameter values, determining appropriate adjustments based on non-terrestrial conditions, and preparing the adjusted parameters for efficient traffic delivery, thereby reducing real-time processing delays.
3Area of stationary object
If multicast broadcast service traffic is supported through delegation, then service coverage and user reach are improved, but network resource consumption increases
Solution Approach 1:
The non-terrestrial radio network node is configured to handle multiple types of traffic including delegated terrestrial traffic and non-terrestrial traffic, and supports various QoS classes (URLLC, eMBB, mMTC) through a unified delegation framework. This multi-functionality allows the node to serve diverse user needs and expand service coverage while managing network resources efficiently through parameter-based traffic characterization and prioritization.
Data Source
AI summary
A terrestrial radio network node may request that delivery of a portion of a communication session between the terrestrial node and a user equipment be delegated to a non-terrestrial radio network node. Based on quasi colocation information included in, and responsive to, a delegation request from the terrestrial node, the non-terrestrial node may determine offset/adjustment values corresponding to terrestrial performance parameter values indicated in the delegation request and may transmit the offset/adjustment values to the terrestrial node, which may transmit the offset adjustment values to the user equipment. The user equipment may adjust configuration information based on the offset adjustment values and receive, from the non-terrestrial node, delegated data traffic associated with the communication session according to adjusted configuration information and according to terrestrial resources schedule, by the terrestrial node, before delegation. The user equipment may continue to receive control messages from the terrestrial node.