Network Coding Transceiver Feedback Mechanism
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Solution Overview
Problem
Current communications systems, such as cellular wireless networks, inefficiently utilize energy and impact throughput and power efficiency due to the lack of effective feedback mechanisms for adjusting data transmissions based on reception quality.
Innovation Solution
A method where transceivers in the system provide quality feedback to the sender, allowing it to adapt transmission scheduling and coding, combining data packets into composite packets with weight factors to optimize system performance and energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If quality feedback is transmitted from receiving nodes to the sending node, then transmission efficiency and energy utilization are improved, but system complexity and overhead increase
Solution Approach 1:
The patent implements a feedback mechanism where receiving nodes transmit quality values (representing reception quality metrics such as SINR or decoding success probability) back to the sending node. The sending node uses this feedback to adaptively adjust transmission parameters including modulation and coding schemes (MCS), power allocation, and scheduling decisions, thereby improving transmission efficiency and energy utilization while managing system complexity through structured feedback processing
Solution Approach 2:
The system dynamically changes transmission parameters based on received quality feedback. The sending node modifies modulation order, coding rate, transmit power, and resource allocation according to the quality values received from different receiving nodes, enabling adaptive optimization of transmission efficiency without requiring complete system redesign
2Use of energy by moving object
If composite packets with coding are used to combine multiple data packets, then energy utilization and throughput are enhanced, but decoding complexity at receiving nodes increases
Solution Approach 1:
The patent combines multiple data packets intended for different receiving nodes into composite packets using network coding techniques. These composite packets contain encoded combinations of original packets, allowing receiving nodes to accumulate information over multiple receptions. This merging approach improves energy utilization by making better use of transmitted energy and enhances throughput by enabling simultaneous service to multiple users, while decoding complexity is managed through iterative decoding algorithms and quality-based packet selection
Solution Approach 2:
The composite packet structure serves multiple receiving nodes simultaneously with a single transmission, providing multi-functionality. Each receiving node can use the same composite packet transmissions to decode its intended data by combining received packets according to the network coding operations, reducing overall system energy consumption while managing decoding complexity through node-specific decoding processes
3Productivity
If adaptive transmission modification based on quality values is implemented, then system throughput and reliability are improved, but processing overhead and latency increase
Solution Approach 1:
The system performs preliminary actions by pre-calculating and preparing multiple transmission parameter configurations (MCS tables, power levels, resource allocations) in advance. When quality feedback is received, the sending node can quickly select from pre-prepared configurations rather than computing optimal parameters in real-time, thereby improving throughput while minimizing the time loss associated with processing and decision-making
Solution Approach 2:
The adaptive transmission modification uses quality feedback to adjust transmission parameters, improving throughput and reliability. The feedback loop introduces processing overhead and latency, but this is managed through efficient feedback processing algorithms and by balancing the frequency of adaptations with system performance requirements
Data Source
AI summary
A method (1000) for use in a communications system (100, 200, 400), with a first transceiver (110) which transmits data packets to a second (120) and a third transceiver (130). At least the second transceiver (120) can transmit (1010) to the first transceiver (100) a quality value regarding the reception quality of one or more data packets (300) which have been received by the second transceiver, which quality value the first transceiver (110) can use to modify (1015) its data transmissions. The second transmitter (120) listens for data packets intended both for itself and for said third transmitter (130), and the quality value which is transmitted by the second transceiver (120) is based on (1025) the reception quality of one or more of said data packets, and the reception quality value is expressed as (1030) one of a plurality of possible such values.