Common Resource Block Allocation for Concurrent LTE and NR Transmission
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently re-farming spectrum from older technologies like LTE to new technologies like NR, leading to decreased capacity and coverage, and there is a need for improved spectrum efficiency as data traffic grows.
Innovation Solution
A control device and network node that allocate common resource blocks for concurrent wireless transmission using different radio access technologies (RATs), employing channel estimations and precoders for spatial multiplexing, allowing simultaneous use of frequency resources by multiple RATs, and dynamic power allocation to enhance spectrum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If re-farming spectrum from old technology to new technology is performed, then spectrum efficiency is improved, but capacity and coverage of the old technology decrease
Solution Approach 1:
The patent merges spectrum resources between different RATs by allocating common resource blocks that can be shared between LTE and NR systems. This allows both technologies to simultaneously utilize the same frequency resources, improving overall spectrum efficiency while maintaining capacity and coverage for both systems through dynamic resource allocation and spatial multiplexing techniques.
Solution Approach 2:
The patent implements dynamic resource allocation where resource blocks are flexibly assigned between LTE and NR based on real-time channel conditions, traffic demands, and system priorities. This dynamic approach allows the network to optimize spectrum usage continuously, improving efficiency without permanently reducing capacity or coverage of either technology.
2Loss of energy
If re-farming spectrum from old technology to new technology is performed, then spectrum efficiency is improved, but the process becomes tedious and complex
Solution Approach 1:
The patent creates a universal resource allocation framework where common resource blocks serve multiple functions and multiple RATs simultaneously. The same physical resources can be allocated to different technologies based on need, eliminating the complexity of separate dedicated allocations and simplifying the re-farming process through a unified management approach.
Solution Approach 2:
The patent employs feedback mechanisms where the network continuously monitors channel conditions, interference levels, and traffic demands to dynamically adjust resource allocation between LTE and NR. This closed-loop control automates the complex re-farming process, reducing manual intervention and simplifying spectrum management while optimizing efficiency.
3Loss of energy
If spectrum is shared between different RATs, then spectrum efficiency is improved, but interference management becomes more difficult
Solution Approach 1:
The patent applies local quality by allocating resources based on specific channel conditions and interference characteristics of different spatial locations. Through spatial multiplexing and beamforming, the system can serve multiple users in different spatial domains simultaneously on the same frequency resources, improving spectrum efficiency while managing interference through spatial separation rather than frequency separation.
Data Source
AI summary
A control device for a wireless communication system is configured to obtain a first channel estimation for a first client device and a second channel estimation for a second client device, to allocate a common resource block (RB) for concurrent wireless transmission between a first network node and the first client device using a first radio access technology (RAT) and between a second network node and the second client device using a second RAT based on the first channel estimation and the second channel estimation. The control device is further configured to allocate a first precoder for the common RB for the first client device and a second precoder for the common RB for the second client device. The first precoder and the second precoder are configured for spatially multiplexing the concurrent wireless transmission.