Content-Aware Error Protection for Wireless Multimedia Throughput
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Solution Overview
Problem
Current broadcasting and telecommunications systems face challenges in providing high-speed data transmission over wireless media, particularly for mobile devices, due to data rate bottlenecks and the Doppler effect, which causes inter-symbol interference and signal attenuation, especially in handheld devices with form factor and power consumption constraints.
Innovation Solution
A system and method for content-aware mapping/error protection that prioritizes multimedia data transmission based on content type, using feedback information to select appropriate forward error correction codes and RF modulation schemes, and antenna selection for optimized transmission, employing multiple-input-multiple-output (MIMO) communication and beamforming techniques to adapt to changing signal conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high power transmitters are used to cover broad service areas, then signal coverage is improved, but power consumption increases
Solution Approach 1:
The service area is divided into multiple cells, each covered by a low power transmitter. This segmentation allows the system to achieve broad coverage through multiple small units rather than requiring a single high power transmitter, thereby reducing power consumption while maintaining signal coverage.
Solution Approach 2:
The patent implements a hybrid system that combines broadcasting and telecommunications functions within the same wireless infrastructure. The cellular network provides both traditional telecommunication services and broadcast multimedia services, allowing low power transmitters to serve multiple purposes and achieve broad coverage without requiring high power.
2Productivity
If data transmission rate is increased to overcome bottlenecks, then throughput is improved, but error rate increases due to Doppler effect
Solution Approach 1:
The system dynamically adapts transmission parameters including error correction coding rate and modulation scheme based on detected signal conditions. When Doppler effect causes signal degradation at high data rates, the system adjusts parameters in real-time to maintain reliability while preserving as much throughput as possible.
Solution Approach 2:
The system employs feedback mechanisms where the receiver monitors signal quality and transmits information about channel conditions back to the transmitter. This feedback enables the transmitter to adjust data transmission rate, error correction level, and modulation scheme to optimize both throughput and reliability under varying Doppler conditions.
3Reliability
If error correction coding is increased to reduce errors, then reliability is improved, but data throughput decreases
Solution Approach 1:
The system dynamically adjusts the level of error correction coding based on current channel conditions. When signal quality is good, less error correction is applied to maximize throughput. When Doppler effect or other impairments degrade the signal, the system increases error correction coding to maintain reliability, thereby optimizing the trade-off between error protection and data throughput in real-time.
Data Source
AI summary
Methods and systems for content-aware mapping/error protection are disclosed. Aspects of one method may include controlling a MAC layer and/or a PHY layer (PHY/MAC layer), in a wireless communication device to wirelessly communicate multimedia information based on content of the multimedia information, which may comprise video information, audio information, and/or data. The controlling of the PHY/MAC layer may comprise selecting a forward error correction code and modulation to be applied to portions of the multimedia information, and selecting one or more antenna to transmit the portions of the multimedia information. The selection criteria may be based on priority assigned to the portions of the multimedia information, and on feedback information from the receiving device and/or a receiver co-located with the device transmitting the multimedia information.