Adaptation Layer Mapping for IAB Node Data Congestion
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively providing services due to data congestion and disconnection issues in wireless links, particularly in IoT environments where reliable data transmission is crucial.
Innovation Solution
The implementation of an Integrated Access Backhaul (IAB) node and communication method that maps data from one radio link control (RLC) layer to a new RLC channel in the adaptation layer, enabling efficient data transfer and recovery from data loss through PDCP status report-based retransmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data is transmitted through wireless links in IoT environments, then data communication capability is improved, but data congestion and disconnection issues occur
Solution Approach 1:
The patent segments data transmission by introducing multiple RLC channels (first RLC channel and second RLC channel) to divide the data flow. This segmentation allows different data to be transmitted through different channels, preventing data congestion in a single channel and improving overall transmission reliability in wireless IoT environments.
Solution Approach 2:
The patent introduces an adaptation layer as an intermediary between the RLC layer and upper layers. This adaptation layer performs mapping between different RLC channels and logical channels, enabling flexible data routing and recovery mechanisms that improve transmission reliability while maintaining communication capability.
2Device complexity
If traditional RLC layer structure is used, then system simplicity is maintained, but data congestion and disconnection cannot be effectively addressed
Solution Approach 1:
The patent nests the adaptation layer within the existing protocol stack structure, positioning it between the RLC layer and upper layers. This nested structure allows the system to maintain overall simplicity while incorporating enhanced data transmission and recovery mechanisms to address congestion and disconnection issues.
Solution Approach 2:
The patent adds a new functional dimension by introducing the adaptation layer with mapping capabilities between multiple RLC channels and logical channels. This dimensional addition enables sophisticated data routing and recovery without fundamentally altering the existing RLC layer structure, maintaining simplicity while improving reliability.
Data Source
Figure 1A
Figure 1B~1C
Figure 1D
AI summary
A wireless node includes a transceiver and at least one controller coupled with the transceiver and configured to: provide, to a adaptation (ADAP) layer, data via at least one first radio link control (RLC) layer; map, the data provided via at least one first radio link control layer to at least one new RLC channel, in the ADAP layer; and transfer, from the ADAP layer, to the at least one second RLC layer corresponding to the at least one new RLC channel, the data mapped to the at least one new RLC channel.