Uplink Signal Decoding Subsystem for Wireless Network Nodes
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Solution Overview
Problem
In wireless communication networks, the finite processing capabilities of network nodes are inefficiently utilized due to the need to decode all uplink signals, including those with padding, which reduces latency and resource utilization.
Innovation Solution
A method where network nodes detect and select a subset of uplink signals for decoding based on channel estimation, while initiating rescheduling for devices transmitting non-selected signals, thereby optimizing processing resources and reducing unnecessary workload in the L1 processing layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all uplink signals are decoded to ensure reliable communication, then communication reliability is improved, but processing resources are wasted on padding signals
Solution Approach 1:
Instead of decoding all uplink signals, the system selectively decodes only a subset of signals based on channel quality estimation. This partial action approach allows the network node to process only the most relevant signals (those with good channel conditions) while ignoring padding signals from UEs with empty buffers, thus saving processing resources while maintaining acceptable communication reliability.
Solution Approach 2:
The system changes the parameter of signal processing by introducing a threshold-based selection mechanism. Signals are evaluated based on their channel quality parameter, and only those exceeding the threshold are decoded. This parameter change enables the system to dynamically adjust processing scope based on actual channel conditions, optimizing the balance between reliability and resource utilization.
2Adaptability or versatility
If all scheduled UEs are processed to maintain fair scheduling, then scheduling fairness is improved, but processing capability is exceeded
Solution Approach 1:
The system applies partial processing by selecting only a subset of UEs for full decoding based on channel quality. This allows the network node to maintain fairness for UEs with good channel conditions while skipping processing for UEs with poor channels or empty buffers, thus avoiding exceeding processing capability while still providing fair service to active users.
Solution Approach 2:
The system uses channel quality information already available at the network node to automatically determine which signals warrant decoding. This self-service mechanism eliminates the need for complex scheduling decisions, allowing the system to autonomously prioritize signals based on their inherent quality without requiring additional processing overhead for fairness management.
3Reliability
If L1 processing is performed on all signals to ensure complete signal reception, then signal reception completeness is improved, but processing time increases
Solution Approach 1:
The system performs partial L1 processing by selectively decoding only signals with good channel quality. This partial action reduces processing time significantly compared to processing all signals, while still ensuring complete reception of the most important signals (those with strong channels). Signals with poor channel quality or empty buffers are skipped, accepting that their reception may fail but minimizing overall processing time.
Data Source
AI summary
A method for operating a network node in a wireless communication network. The method comprises detecting signals transmitted from wireless communication devices scheduled for uplink transmissions. The method also comprises selecting a subset of the detected signals for decoding. The method also comprises decoding the selected subset and initiating a rescheduling of the wireless communication devices that transmitted the detected signals that were not selected. Also disclosed is a method performed by a network device in a wireless communication network. The method comprises scheduling wireless communication devices for uplink transmissions. The method also comprises obtaining information enabling an identification of a subset of wireless communication devices that transmitted signals using said scheduling but whose transmitted signals were not selected for decoding and rescheduling said subset of wireless communication devices for uplink transmissions. Corresponding network nodes and network devices and relate computer programs are also disclosed.