NR Multicast Transmission Mode Policy for QoS Reliability
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Solution Overview
Problem
Existing multicast services in New Radio (NR) face challenges in meeting quality of service requirements due to insufficient decision-making basis for selecting transmission modes, leading to potential difficulties in reliability and other service quality issues.
Innovation Solution
A method where a core-network-side device sends a message with a multicast service identifier and mode policy information to an access-network-side device, determining or indicating the transmission mode based on this information, which includes quality of service requirements and statistical results, allowing for better alignment with service quality demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If transmission mode is determined only based on statistical result of multicast service demands on RAN side, then decision-making process is simple, but transmission quality of service requirements cannot be met
Solution Approach 1:
The core-network-side device acts as an intermediary that provides mode policy information to the access-network-side device. This intermediary mechanism enables the RAN to make transmission mode decisions based on both local statistical results and core network policies, thereby improving transmission reliability without significantly increasing decision-making complexity at the RAN side.
Solution Approach 2:
The core-network-side device performs preliminary analysis and generates mode policy information in advance, which is then provided to the access-network-side device. This preliminary action allows the RAN to make more informed transmission mode decisions without having to perform complex real-time analysis, thus improving reliability while keeping decision-making relatively simple.
2Adaptability or versatility
If unicast connection is established from core network to RAN for switching between multicast and unicast, then transmission flexibility is improved, but delay increases
Solution Approach 1:
The access-network-side device pre-establishes unicast connections with user equipment before multicast service switching is needed. This preliminary action ensures that when switching between multicast and unicast is required, the connection is already in place, thereby maintaining transmission flexibility while minimizing switching delay.
Solution Approach 2:
The system dynamically adjusts transmission modes based on real-time service demands and mode policy information. The access-network-side device can flexibly switch between multicast and unicast modes without establishing new connections, as unicast connections are maintained in standby. This dynamic approach preserves adaptability while reducing the time loss associated with connection establishment.
Data Source
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AI summary
The present invention provides a service sending method, a service sending mode configuring method, and a related device. The service sending method comprises: receiving a first message from a core network side device, the first message comprising a multicast service identifier and mode strategy information; and sending data of a multicast service corresponding to the multicast service identifier by using a first sending mode, the first sending mode being a sending mode determined according to the mode strategy information, or the first sending mode being a sending mode indicated by the mode strategy information.