Fronthaul Multiplexer Resource Block Allocation for Wireless Power Efficiency
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Solution Overview
Problem
In distributed network structures, the power consumption of radio units in radio access networks increases due to the need for all radio units to transmit electromagnetic waves of maximum power, even when only some units have connected user equipment.
Innovation Solution
A fronthaul multiplexer (FHM) is used to distribute physical resource blocks only to the radio units that have connected user equipment, allowing each unit to transmit radio signals efficiently and reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If all radio units transmit electromagnetic waves of maximum power to ensure coverage, then the service coverage is maintained, but the overall power consumption of the RAN increases rapidly
Solution Approach 1:
The patent segments the physical resource blocks into different sets based on which radio units have connected user equipment. Instead of all radio units transmitting all resource blocks, the system divides resource blocks into a first set for radio units with UEs and a second set for radio units without UEs, thereby segmenting the transmission burden and reducing overall power consumption while maintaining coverage where needed.
Solution Approach 2:
The patent applies local quality by differentiating the transmission behavior of different radio units based on their local conditions (whether they have connected UEs). Radio units with connected UEs transmit the first set of resource blocks, while radio units without connected UEs transmit only the second set, allowing each unit to adapt its transmission characteristics to its local needs and reduce unnecessary power consumption.
2Use of energy by moving object
If all radio units transmit physical resource blocks equally to ensure fair service, then service fairness is maintained, but power consumption increases due to redundant transmissions
Solution Approach 1:
The patent introduces dynamics by making the resource block allocation adaptive rather than static. The system dynamically determines which radio units should transmit which resource blocks based on real-time information about connected user equipment. This dynamic allocation allows the system to optimize power consumption by preventing redundant transmissions while maintaining flexibility to serve different deployment scenarios.
Solution Approach 2:
The patent changes the parameter of resource block transmission based on the condition of connected user equipment. The system modifies the transmission parameters (which resource blocks are transmitted, by which radio units) according to the operational state of the network, transitioning from a fixed equal transmission model to a conditional variable transmission model that optimizes energy efficiency.
3Area of stationary object
If multiple radio units are used to expand service coverage, then the coverage area increases, but the total power consumption of the distributed network increases rapidly
Solution Approach 1:
The patent segments the workload among radio units by dividing physical resource blocks into different sets. Radio units with connected user equipment handle the first set of resource blocks, while radio units without connected user equipment handle only the second set. This segmentation allows the system to expand coverage by adding more radio units while preventing those units from consuming maximum power when idle.
Solution Approach 2:
The system implements self-service by allowing each radio unit to autonomously determine its transmission behavior based on whether it has connected user equipment. Radio units self-adjust their resource block transmission based on local conditions, eliminating the need for centralized control to manage power consumption while maintaining the ability to expand coverage when needed.
Data Source
AI summary
Provided is a method for processing a physical resource block in a wireless communication system. The method includes identifying, by a distributed unit, user equipment (UE) connected to each of a plurality of radio units (RUs) and acquiring connection information, generating, by the distributed unit, physical resource block allocation information on a resource block area allocated to each of the plurality of RUs based on the connection information, distributing, by a fronthaul multiplexer (FHM), the resource block area allocated to each of the plurality of RUs based on the physical resource block allocation information, and transmitting, by each of the plurality of RUs, a radio signal to at least one UE based on the distributed physical resource block area.