Symbol-Level Resource Allocation for 5G Data Channels
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Solution Overview
Problem
Next-generation/5G radio access networks (NR) face challenges in efficiently allocating time-domain resources for downlink and uplink data channels to meet diverse requirements of enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable and low latency communication (URLLC) scenarios, which demand flexible frame structures beyond the limitations of traditional LTE/LTE-Advanced systems.
Innovation Solution
The proposed solution involves allocating time-domain resources for downlink (PDSCH) and uplink (PUSCH) data channels by configuring symbol-level resource allocation using bitmap-based information and symbol allocation tables within the NR system, allowing for flexible scheduling units such as slots and mini-slots, and supporting different subcarrier spacing (SCS) values to optimize resource utilization across various usage scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional LTE/LTE-Advanced resource allocation methods are used, then system simplicity is maintained, but flexibility and adaptability to diverse usage scenarios are insufficient
Solution Approach 1:
The patent segments the time-domain resource allocation into multiple parameters including slot offset (K0), start symbol (S), and length (L), allowing independent configuration of each parameter to achieve flexible resource allocation while maintaining manageable system complexity through structured parameterization
Solution Approach 2:
The patent introduces dynamic time-domain resource allocation where the scheduling flexibility parameter enables the system to adaptively adjust resource allocation patterns based on traffic requirements, transitioning between different allocation modes to serve diverse usage scenarios like eMBB, mMTC, and URLLC
2Adaptability or versatility
If flexible time-domain resource allocation is implemented, then adaptability to different usage scenarios is improved, but resource allocation complexity increases
Solution Approach 1:
The patent applies local quality by enabling different resource allocation configurations for different usage scenarios within the same system, allowing eMBB, mMTC, and URLLC to have scenario-optimized resource allocation patterns while maintaining a unified overall framework
Solution Approach 2:
The patent utilizes parameter changes by introducing a scheduling flexibility parameter that can be adjusted to change the degree of resource allocation flexibility, allowing the system to adapt to different scenario requirements by modifying specific parameters rather than restructuring the entire allocation mechanism
3Productivity
If symbol-level resource allocation is used, then resource utilization efficiency is improved, but control information overhead increases
Solution Approach 1:
The patent applies partial action by allocating resources at the symbol level only when necessary for specific scenarios, rather than always using fine-grained symbol-level allocation, thus achieving improved resource utilization efficiency while avoiding excessive control information overhead in scenarios where coarser allocation suffices
Data Source
AI summary
Provided is s a method for a base station to allocate a time interval resource to transceive a downlink data channel (PDSCH) or an uplink data channel (PUSCH). The method include allocating a time interval resource for each OFDM symbol on the basis of a slot or a mini-slot, transmitting, to a terminal, time interval resource configuration information including OFDM symbol allocation data for OFDM symbols used for data channel transception in the slot or the mini-slot, and transmitting, to the terminal, control information selecting one of the symbol allocation data included in the time interval resource configuration information.