Network Access Unit Video Drop Load Balancing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems face challenges in providing high availability and quality of services to multiple terminals with varying link conditions and capabilities, leading to a trade-off between bandwidth efficiency and service quality due to the need for lower order modulation and coding schemes to ensure reliable transmission.
Innovation Solution
A network access unit that dynamically adjusts transmission parameters by using a master schedule to prioritize and pre-code video and data content based on link conditions and terminal capabilities, employing scalable video coding and adaptive coding and modulation schemes to optimize bandwidth allocation and service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lower order modulation and coding schemes are used to ensure reliable transmission to terminals with worst link conditions, then service availability is improved, but bandwidth efficiency deteriorates
Solution Approach 1:
The patent segments video content into multiple hierarchical layers (e.g., base layer and enhancement layers) that can be transmitted using different coding and modulation schemes. This allows the system to transmit critical base layer data using reliable lower order schemes while using more efficient higher order schemes for non-critical enhancement data, thereby resolving the contradiction between reliability and bandwidth efficiency.
Solution Approach 2:
The patent applies different coding and modulation schemes to different parts of the data stream based on their importance and link conditions. Critical data receives more reliable encoding while less critical data uses more efficient encoding, allowing the system to optimize both availability and bandwidth usage simultaneously.
2Reliability
If the network transmits information at the most reliable modcode to ensure terminals with worst link conditions receive the information, then service availability is improved, but the amount of service-related information transmitted per unit time decreases
Solution Approach 1:
By dividing content into hierarchical layers with different transmission requirements, the system can ensure minimum service availability for critical data while maximizing overall information transmission rate for non-critical data, thus resolving the contradiction between availability and productivity.
Solution Approach 2:
The system dynamically adjusts the transmission strategy based on real-time link conditions and terminal capabilities. When link conditions are poor, the system prioritizes critical data transmission; when conditions improve, it increases the transmission of enhancement data, optimizing both availability and information rate adaptively.
3Reliability
If adaptive coding and modulation dynamically adjusts coding schemes to adapt to changing link conditions, then service availability is improved, but the complexity of transmission parameter adjustment increases
Solution Approach 1:
The patent simplifies the adaptive coding complexity by segmenting data into predefined hierarchical layers with standardized coding schemes. Instead of dynamically adjusting parameters for every data packet, the system uses pre-defined layer structures that can be efficiently transmitted using established ACM techniques, reducing implementation complexity.
Data Source
AI summary
A network access unit includes: a source data receiver module adapted to receive multiple first source data representing respective video content and second source data representing broadband data content; a network control module adapted to receive link condition data and configuration data, calculate priority data based on the link condition data and the configuration data, and use the priority data to generate a master schedule including program data indicating that some but not all of the multiple first source data are to be transmitted; a pre-coder module adapted to pre-code respective first source data using respective pre-coding schemes to generate respective sets of representation data, if the program data is determined to indicate that the respective first source data is to be transmitted; and an ACM module adapted to associate, for each first source data indicated for transmission, the respective sets of representation data with respective coding and modulation schemes.