Dynamic RF Bandwidth Allocation for Massive MIMO
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Solution Overview
Problem
Massive MIMO systems face limitations in bandwidth utilization due to the fixed allocation of radio frequency bandwidths across RF branches, leading to reduced transmitting/receiving power, diversity gain, and spatial processing freedom, especially in interference-limited environments.
Innovation Solution
A method and scheduler for dynamically determining and configuring radio frequency bandwidths for each RF branch based on traffic demands, allowing uneven allocation across the total bandwidth to accommodate varying requirements of different radio frequency bandwidth parts, thereby optimizing bandwidth utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the same radio frequency bandwidth is assigned to all RF branches, then the system configuration is simple and consistent, but the bandwidth utilization efficiency is reduced and energy waste increases
Solution Approach 1:
The patent applies local quality by assigning different radio frequency bandwidths to different RF branches based on their specific traffic demands and service requirements. Instead of uniform bandwidth allocation, each RF branch receives a customized bandwidth configuration that matches its local needs, thereby improving overall bandwidth utilization efficiency while managing complexity through demand-driven differentiation.
Solution Approach 2:
The patent implements dynamic bandwidth allocation where the radio frequency bandwidth for each RF branch is determined based on real-time or near-real-time traffic demands. The system can adaptively adjust bandwidth assignments to match changing service requirements, transforming the static uniform allocation into a dynamic resource distribution mechanism that optimizes utilization efficiency.
2Reliability
If more RF branches are used to serve each carrier, then the transmitting/receiving power and diversity gain are increased, but the resource waste and energy consumption increase
Solution Approach 1:
The patent changes the parameter of bandwidth allocation from a fixed uniform value to a variable value that depends on traffic demand. By adjusting the bandwidth parameter for each RF branch according to actual service requirements, the system optimizes the balance between utilizing sufficient RF branches for diversity gain and avoiding excessive resource allocation that would lead to energy waste.
Solution Approach 2:
The patent applies partial action by allocating bandwidth to only those RF branches that are actually needed for current traffic demands. Instead of activating all available RF branches uniformly, the system selectively engages the necessary number of branches based on demand, avoiding the energy waste associated with activating excessive branches while still achieving sufficient diversity gain for reliable communication.
3Productivity
If the radio frequency bandwidth is increased for each RF branch, then the bandwidth capability is improved, but the component cost and processing complexity increase
Solution Approach 1:
The patent makes the RF branch system universal by enabling each branch to operate with different bandwidth configurations based on service requirements. The same physical RF branch infrastructure can be dynamically allocated to serve different bandwidth needs, making the system multi-functional and adaptable to various service scenarios without requiring dedicated high-bandwidth components for every branch, thereby controlling component costs.
Data Source
AI summary
Embodiments described herein relate to methods and apparatuses for configuring communication between a base station and at least one wireless device, the base station using an antenna array, wherein antenna ports in the antenna array are coupled to radio frequency branches. The method comprises determining a first radio frequency bandwidth for a first radio frequency branch based on one or more factors associated with traffic served by a plurality of radio frequency bandwidth parts, and configuring the first radio frequency branch to serve frequencies within the first radio frequency bandwidth.