Physical Layer Split Point Allocation for Variable Fronthaul Bandwidth
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Solution Overview
Problem
Existing communication systems face inefficiencies in determining the optimal split point between baseband and radio frequency units at the physical layer, leading to suboptimal performance in uplink and downlink transmissions due to fixed split points that do not adapt to varying transmission bandwidths.
Innovation Solution
A method to flexibly determine the split point between baseband and radio frequency units based on transmission bandwidth, allowing for dynamic allocation of functional modules between the two units at the physical layer, optimizing performance gains in uplink and downlink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed split point is used between baseband unit and radio frequency unit, then device complexity is reduced and ease of operation is improved, but communication performance deteriorates due to inability to adapt to varying transmission bandwidths
Solution Approach 1:
The patent applies the dynamics principle by making the split point between baseband unit and radio frequency unit dynamically adjustable rather than fixed. The split point can be flexibly determined based on different transmission bandwidths, allowing the system to adapt to varying network conditions and service requirements, thus resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The patent applies parameter changes by adjusting the functional module allocation between baseband unit and radio frequency unit according to transmission bandwidth parameters. When transmission bandwidth increases, more functional modules can be allocated to the radio frequency unit, and vice versa, enabling the system to optimize performance for different bandwidth scenarios without increasing overall device complexity.
2Productivity
If more functional modules are allocated to radio frequency unit, then signal processing efficiency is improved for high bandwidth scenarios, but transmission bandwidth requirement increases
Solution Approach 1:
The patent applies dynamics by dynamically allocating functional modules between baseband unit and radio frequency unit based on actual transmission bandwidth requirements. This ensures that signal processing efficiency is optimized for each scenario without unnecessarily increasing transmission bandwidth consumption, as modules are only allocated to radio frequency unit when bandwidth conditions permit.
Solution Approach 2:
The patent applies parameter changes by adjusting the allocation of functional modules according to transmission bandwidth parameters. When bandwidth is sufficient, more modules are allocated to radio frequency unit to improve processing efficiency; when bandwidth is limited, modules are kept in baseband unit to reduce bandwidth requirements, thus resolving the contradiction between productivity and quantity of substance.
3Reliability
If channel equalization is performed in radio frequency unit, then communication quality is improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics by making the allocation of channel equalization functional modules flexible rather than fixed. The decision to perform channel equalization in radio frequency unit or baseband unit is dynamically determined based on transmission bandwidth and communication quality requirements, thus improving reliability without permanently increasing device complexity.
Solution Approach 2:
The patent applies parameter changes by adjusting the location of channel equalization functional modules based on communication quality parameters and bandwidth conditions. When quality requirements are high and bandwidth permits, equalization is performed in radio frequency unit; otherwise, it is performed in baseband unit, resolving the contradiction between reliability and device complexity.
Data Source
AI summary
This application relates to the field of wireless communication technologies, and discloses a method for determining a split point and an apparatus. The method includes flexibly determining a split point between a baseband unit and a radio frequency unit at a physical layer based on a transmission bandwidth between the baseband unit and the radio frequency unit. Compared with a solution in which a split point between a baseband unit and a radio frequency unit at a physical layer is fixed, in the solutions of this disclosure, the split point between the baseband unit and the radio frequency unit at the physical layer can be flexibly adjusted based on the transmission bandwidth between the baseband unit and the radio frequency unit.