Dynamic Resource Allocation in Wireless Communication Systems
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Solution Overview
Problem
Current wireless communication systems, such as LTE and emerging 5G standards like New Radio (NR), face limitations in flexibility and efficiency, particularly in managing multiple component carriers and resource configurations, which affect communication performance across various scenarios like enhanced Mobile BroadBand (eMBB), massive Machine Type Communication (mMTC), and Ultra Reliable and Low Latency Communication (URLLC).
Innovation Solution
The implementation of a wireless communication system that utilizes Orthogonal Frequency Division Multiplexing (OFDM) with cyclic prefix (CP-OFDM) in downlink and Discrete Fourier Transform-spread-OFDM (DFT-s-OFDM) in uplink, along with dynamic resource grid configurations and carrier aggregation, to optimize subcarrier spacing, OFDM symbol configurations, and time-frequency resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed communication structure is used, then system simplicity is maintained, but communication flexibility and efficiency are limited
Solution Approach 1:
The patent implements dynamic resource allocation where the network can flexibly configure time-frequency resources, subcarrier spacing, and cyclic prefix lengths based on traffic conditions and service requirements. This allows the system to adapt to different communication scenarios (eMBB, mMTC, URLLC) without requiring multiple fixed systems, thus improving flexibility while maintaining manageable complexity through centralized control.
Solution Approach 2:
The patent creates a universal communication framework that can handle multiple service types (enhanced Mobile BroadBand, massive Machine Type Communication, and Ultra Reliable and Low Latency Communication) within a single system. By using configurable parameters like subcarrier spacing and resource block structures, one system serves multiple functions, improving adaptability without proportionally increasing complexity.
2Productivity
If traditional resource allocation methods are used, then system simplicity is maintained, but resource utilization efficiency decreases
Solution Approach 1:
The patent implements dynamic resource allocation mechanisms where resource blocks, subcarrier spacing, and cyclic prefix configurations are adjusted in real-time based on channel conditions, traffic demand, and service priorities. This dynamic approach optimizes resource utilization efficiency by allocating resources precisely where and when they are needed, rather than using static allocation that wastes resources during low-demand periods.
Solution Approach 2:
The patent utilizes configurable physical layer parameters including subcarrier spacing values, cyclic prefix lengths, and resource block structures that can be dynamically changed to optimize resource utilization. By allowing these parameters to be adjusted based on communication conditions, the system achieves higher productivity without requiring fundamentally complex new resource management architectures.
Data Source
AI summary
A terminal device comprising: transmission circuitry configured to transmit multiple instances numbered from 0 to Krep−1 for a repetition of a PUSCH, and higher layer processing circuitry configured to perform processes of a RRC layer, wherein a redundancy version for the nth instance is determined by mod(n,Ns) where Ns is a length of the redundancy version sequence, the multiple instances are determined based on a slot configuration provided through the RRC layer and the Krep, and the multiple instances are mapped on Krep slots which don't include a slot where a set of OFDM symbols allocated for an instance in a slot overlap with a downlink region for the slot configuration.