Uplink Signal Processing Segmentation for Backhaul Bandwidth Optimization
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Solution Overview
Problem
In radio communication systems like New Radio (NR), the backhaul transmission of uplink signals faces challenges in optimizing the amount of signals to be transmitted, leading to strained bandwidth and inefficient utilization of optical fiber cables.
Innovation Solution
A communication apparatus that includes a reception section, a control section to determine signal processes for uplink signals, and a transmission section to apply these processes, dynamically controlling the application range of signal processing between the central unit and baseband units to optimize the amount of uplink signals transmitted to the backhaul.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If all uplink signals are transmitted to the backhaul for centralized processing, then processing flexibility and adaptability are improved, but bandwidth consumption increases and transmission efficiency deteriorates
Solution Approach 1:
The patent segments the signal processing tasks by dividing them into two categories: deterministic processing (FFT, CP removal) performed at the edge device and adaptive processing (channel estimation, equalization, decoding) performed at the centralized network device. This segmentation allows flexible adaptation for signals requiring centralized processing while reducing bandwidth consumption for signals that can be processed locally.
Solution Approach 2:
The patent implements dynamic control of the application range of signal processing by allowing the network device to configure and adjust which processing stages are performed at the edge device versus the centralized device. This dynamic adjustment optimizes the balance between processing flexibility and bandwidth consumption based on network conditions and signal characteristics.
2Reliability
If signal processing is performed at the centralized network device, then processing accuracy and reliability are improved, but transmission latency increases and productivity decreases
Solution Approach 1:
The patent applies preliminary action by performing deterministic processing steps (FFT, cyclic prefix removal) at the edge device before transmission to the centralized network device. This preliminary processing reduces the amount of data that needs to be transmitted and processed centrally, thereby reducing latency while maintaining processing accuracy for the remaining steps at the centralized device.
3Quantity of substance
If more signal processing tasks are offloaded to the edge device, then transmission bandwidth is reduced, but device complexity increases and ease of operation decreases
Solution Approach 1:
The patent extracts and removes the cyclic prefix from the uplink signal at the edge device before transmission to the centralized network device. This extraction reduces the amount of data transmitted over the backhaul, thereby reducing bandwidth consumption while keeping the edge device complexity manageable by performing only this specific preprocessing operation.
Data Source
AI summary
A communication apparatus is disclosed including a reception unit that receives an uplink signal; a control unit that determines one or more signal processes to be applied to the uplink signal, among a plurality of signal processes for the uplink signal; and a transmission unit that transmits to a backhaul the uplink signal that received the determined one or more signal processes. In another aspect, a communication method is also disclosed.