Multicast Broadcast Service Continuity via Priority Segmentation
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Solution Overview
Problem
In wireless networks, resource limitations often lead to the discontinuation of Broadcast Multicast Services in favor of Unicast Services, causing congestion and impacting user experience, especially when Unicast and Broadcast Multicast services co-exist on the same carrier.
Innovation Solution
Prioritizing Multicast Broadcast Services over Unicast Services during congestion by assigning higher priorities to Broadcast Multicast bearers, allowing network nodes and user equipment to manage resource allocation and ensure continuity of Broadcast Multicast Services with minimal disturbance to user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If Broadcast Multicast Services are provided on a single frequency carrier with many user equipments, then Broadcast Multicast Service coverage is improved, but Unicast Service resource limitation increases
Solution Approach 1:
The patent segments the carrier resources by time (subframes) to separate Broadcast Multicast Services from Unicast Services. Specifically, even subframes (0, 4, 5, 9) are allocated to Unicast Services while odd subframes (1, 2, 3, 6, 7, 8) are allocated to Broadcast Multicast Services, allowing both services to coexist on the same carrier without resource conflict.
Solution Approach 2:
The patent introduces a temporal dimension to resource allocation by using different subframes within a radio frame for different services. This time-division approach allows the system to serve multiple user equipments for Broadcast Multicast Services while simultaneously providing Unicast Services without resource exhaustion.
2Reliability
If Unicast services are prioritized during resource limitation, then Unicast Service quality is improved, but Broadcast Multicast Service continuity deteriorates
Solution Approach 1:
The patent segments bearer types into different priority levels. Broadcast Multicast Services are assigned a first priority level while Unicast Services are assigned a second priority level. During resource limitation, the network selectively switches off lower-priority Unicast bearers to maintain higher-priority Broadcast Multicast service continuity.
Solution Approach 2:
The patent inverts the conventional priority assumption by making Broadcast Multicast Services the higher-priority service during resource constraints. This inversion ensures that Broadcast Multicast Service continuity is maintained even when Unicast Services experience resource limitation or discontinuation.
3Productivity
If Broadcast Multicast Services are switched off during congestion, then Unicast Service resource availability is improved, but Broadcast Multicast Service continuity deteriorates
Solution Approach 1:
The patent implements dynamic priority management where the network can adaptively switch between different bearer types based on real-time resource availability. During congestion, the network dynamically switches off Unicast bearers while maintaining Broadcast Multicast bearers, and can restore Unicast services when resources become available again.
Solution Approach 2:
The patent establishes preliminary priority assignments where Broadcast Multicast Services are pre-configured with higher priority than Unicast Services. This preliminary prioritization ensures that during congestion events, the network automatically preserves Broadcast Multicast Service continuity without requiring real-time decision-making for service switching.
Data Source
AI summary
The present invention relates to a method for providing Multicast Broadcast Services continuity towards a user equipment part of a wireless network, said Multicast Broadcast Services being supported by at least one Multicast Broadcast Services bearer, said wireless network further providing Unicast Services to said user equipment, said Unicast Services being supported by at least one Unicast Service bearer, said Multicast Broadcast Services bearers being multiplexed with Unicast Services bearers on at least one carrier. According to the present invention, the method comprises the steps of prioritizing said Multicast Broadcast Services over said Unicast services.