Subband Duplex Slot Pattern Configuration for URLLC Latency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile communication systems face challenges in efficiently supporting subband duplex operations, particularly in scenarios requiring Ultra-Reliable and Low-Latency communication (URLLC), due to limitations in radio resource management and duplex direction interpretation, leading to increased latency and reduced performance.
Innovation Solution
The proposed solution involves a subband duplex operation method where terminals and base stations dynamically configure and manage subbands for uplink and downlink transmissions within a slot, using flexible symbols and resource blocks, and employ advanced signaling methods like RRC signaling and DCI formats to optimize resource allocation and minimize duplex gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If subband duplex operation is implemented with dynamic slot pattern configuration, then radio resource use efficiency is improved and latency is reduced, but system complexity and signaling overhead increase
Solution Approach 1:
The patent segments the frequency band into multiple subbands and configures different duplex directions for different subbands within the same slot. This allows independent optimization of each subband, reducing overall latency by enabling parallel UL/DL transmissions in different frequency regions while maintaining manageable system complexity through modular configuration.
Solution Approach 2:
The patent introduces dynamic slot pattern configuration where the base station can flexibly adjust the duplex direction (UL or DL) for each subband on a per-slot basis. This dynamic adaptability enables the system to respond to varying traffic conditions and minimize latency without requiring complete system reconfiguration, balancing flexibility with complexity.
2Productivity
If subband duplex operation is implemented with dynamic slot pattern configuration, then radio resource use efficiency is improved, but device complexity and signaling overhead increase
Solution Approach 1:
The frequency spectrum is divided into multiple subbands, each capable of independent duplex direction configuration. This segmentation enables more granular radio resource allocation and improves overall resource utilization efficiency while keeping the complexity manageable through standardized configuration procedures for each subband.
Solution Approach 2:
The patent creates a universal slot pattern configuration framework that can be applied across multiple subbands with different duplex directions. This multi-functional approach allows the same base station and terminal architecture to handle various duplex configurations (all-UL, all-DL, or mixed) without requiring separate dedicated systems for each scenario.
3Adaptability or versatility
If subband duplex operation is implemented with multiple subband configuration, then flexibility of subband operations is improved, but signaling overhead increases
Solution Approach 1:
The patent segments the frequency band into multiple subbands that can be independently configured with different duplex directions. This segmentation provides high flexibility for adapting to various traffic scenarios while managing signaling overhead through efficient representation methods for subband configurations.
Solution Approach 2:
The patent allows configuration of multiple subbands with different duplex directions, providing more flexibility than strictly necessary for basic operation. This excessive configurability enables adaptation to diverse scenarios including URLLC, eMBB, and mMTC, with signaling overhead managed through selective activation and efficient representation techniques.
Data Source
AI summary
A subband duplex (SD) operation method of a terminal may include: receiving, from a base station, slot pattern information for a slot; receiving, from the base station, information on at least one subband; and performing uplink transmission and/or downlink reception with the base station in the at least one subband included in at least one SD symbol included in the slot.