Wireless Feedback for Missing Code Blocks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently decoding transmit blocks (TBs) with missing systematic code blocks (CBs), leading to increased overhead and resource utilization inefficiencies due to the need for retransmitting entire blocks rather than just missing components.
Innovation Solution
The proposed solution involves generating encoded TBs with systematic and parity CBs, allowing receivers to decode even with missing CBs by requesting and utilizing additional parity CBs only when necessary, and employing quantized feedback to reduce overhead in requesting additional CBs, thereby optimizing resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional retransmission methods are used for missing CBs, then decoding reliability is improved, but overhead and resource utilization efficiency deteriorate due to retransmitting entire blocks
Solution Approach 1:
The patent segments the transmission into systematic CBs and parity CBs, allowing selective retransmission of only the missing systematic CBs rather than the entire TB. The receiver requests specific missing CBs using feedback mechanisms, and the transmitter sends only those requested CBs, achieving efficient resource utilization while maintaining decoding reliability through the parity CBs that enable reconstruction of any missing systematic CBs.
2Reliability
If feedback mechanisms request additional CBs, then decoding capability is improved, but feedback overhead increases
Solution Approach 1:
The patent implements feedback mechanisms where the receiver sends requests for missing CBs to the transmitter. The feedback can be implemented in various forms including explicit feedback messages indicating which CBs are missing, or implicit feedback through acknowledgment patterns. This feedback enables the transmitter to send only the necessary additional CBs, balancing decoding capability with feedback overhead efficiency.
Data Source
AI summary
Methods, systems, and devices for wireless communication are described that provide for generation of an encoded transport block (TB) that includes a number of systematic code blocks (CBs) and a number of parity CBs. The systematic CBs may be transmitted to a receiver, and the receiver may attempt to decode the systematic CBs. In some cases, one or more parity CBs may be transmitted with the systematic CBs, and the systematic CBs may be successfully decoded even in the event that one or more of the systematic CBs are not successfully received. In some cases, a receiver may provide feedback that requests that additional CBs be transmitted to decode the systematic CBs that were received, and it is not necessary to retransmit the missing systematic CBs. In some cases, a quantized value of a number of additional CBs needed to decode the TB may be transmitted.