Wireless Node RLC Feedback Mediation for Lossless Backhaul
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Solution Overview
Problem
Current wireless communication systems face challenges in providing efficient data transmission and minimizing data loss in next-generation mobile communication systems, particularly in wireless backhaul networks, due to complexities in ARQ functions and RLC sequence number management.
Innovation Solution
The implementation of an apparatus and method that includes a transceiver and processor configured to receive and transmit data between nodes, utilizing an automatic repeat request (ARQ) function with multi-hop ARQ methods, where intermediate wireless nodes read and interpret RLC status reports, reconfigure data, and perform rapid retransmissions to ensure lossless data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-hop ARQ methods are implemented with intermediate wireless nodes reading and interpreting RLC status reports, then data delivery reliability is improved, but device complexity increases
Solution Approach 1:
The patent introduces intermediate wireless nodes as mediators in the data transmission path. These nodes read and interpret RLC status reports from downstream nodes and generate new status reports based on their own reception status, enabling reliable end-to-end delivery through multi-hop ARQ without requiring direct end-to-end status report exchange between source and destination.
Solution Approach 2:
The patent segments the end-to-end ARQ function into multiple hop-by-hop ARQ operations. Each intermediate wireless node independently performs ARQ operations on its own link, breaking down the complex end-to-end reliability problem into simpler, manageable segments that can be handled locally at each node.
2Loss of time
If rapid retransmissions are performed by intermediate wireless nodes, then transmission delay is reduced, but device complexity increases
Solution Approach 1:
The patent enables intermediate wireless nodes to perform preliminary retransmission actions locally without waiting for end-to-end status reports. When a node detects missing data in its received packets, it can immediately request retransmission from its upstream neighbor, reducing overall transmission delay by acting proactively rather than reactively.
Solution Approach 2:
Each intermediate wireless node autonomously manages its own ARQ operations, including reading status reports, determining missing data, and initiating retransmission requests. This self-service approach eliminates the need for complex centralized control and reduces processing delays while maintaining manageable device complexity through standardized protocols.
3Productivity
If RLC status reports are reconfigured at intermediate wireless nodes, then data transmission efficiency is improved, but difficulty of detecting and measuring increases
Solution Approach 1:
The patent transforms RLC status report parameters at intermediate wireless nodes by reconfiguring them to reflect local link status rather than end-to-end status. This parameter transformation enables more efficient local ARQ operations and reduces the complexity of status report interpretation, as each node only needs to understand and process parameters relevant to its own link.
Data Source
AI summary
A method and apparatus for a wireless communication system is provided. The apparatus includes a transceiver and at least one processor coupled with the transceiver and configured to receive data from a first node, transmit the data to a second node, receive, from the second node, radio link control (RLC) feedback information corresponding to the transmitted data and transmit, to the first node, RLC feedback information corresponding to the received data based on the received RLC feedback information and the received data.