MBMS Transmitter Coupling Primary and Auxiliary Signals
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Solution Overview
Problem
Conventional multimedia broadcast/multicast service systems transmit streams with different resolutions as separate services, leading to inefficiencies in receiving efficiency, overall system throughput, and service coverage due to independent radio resource usage.
Innovation Solution
A transmitter and receiver system that couples a primary signal with an auxiliary signal of the same resolution to create a virtual auxiliary signal with lower resolution, processed through diversity combining to improve receiving quality and extend service coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If streams with different resolutions are transmitted as separate services via independent radio resources, then service quality is maintained, but receiving efficiency and system throughput are degraded
Solution Approach 1:
The patent combines multiple resolution streams into a unified transmission framework where a base layer (lowest resolution) and enhancement layers (additional resolution data) share radio resources. This merging approach allows receivers to efficiently decode streams at different resolutions from the same resource pool, improving receiving efficiency and system throughput while reducing resource management complexity.
2Loss of energy
If independent radio resources are allocated to each resolution stream, then service coverage is maintained, but bandwidth consumption increases
Solution Approach 1:
The patent creates a universal transmission structure where a single set of radio resources serves multiple resolution requirements. The base layer provides coverage for all areas, while enhancement layers extend service quality to areas with better channel conditions. This multi-functional resource allocation reduces bandwidth consumption while maintaining or extending service coverage.
3Reliability
If multiple independent transmission channels are used for different resolutions, then receiving quality is maintained, but overall system throughput decreases
Solution Approach 1:
The patent segments the transmission into a base layer and enhancement layers, where the base layer ensures receiving quality for all users, and enhancement layers provide additional quality improvements. This segmentation allows efficient resource utilization where the base layer achieves high throughput with reliable reception, while enhancement layers incrementally improve quality without proportionally increasing resource consumption, thereby improving overall system throughput.
Data Source
AI summary
A multi-class multimedia broadcast/multicast service (MBMS) system includes a transmitter and at least one receiver. The transmitter transmits N primary signals by N primary channels and an auxiliary signal by an auxiliary channel, wherein a resolution of the auxiliary signal is identical to the highest resolution of the N primary signals and the constellation mappings of the auxiliary signal and the primary signal with the highest resolution among said N primary signals on the corresponding modulation constellations are coupled. The receiver couples the primary signal with the corresponding auxiliary/virtual auxiliary signal to obtain a lower-resolution virtual auxiliary signal, which can also be coupled with the primary signal having the same resolution. Therefore, receiving quality of each resolution is improved by combining the primary signal and the corresponding auxiliary/virtual auxiliary signal.