Subband Configuration for Full Duplex in 5G NR Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing downlink and uplink transmissions and receptions through subbands for full duplex communication in 5G NR systems.
Innovation Solution
The method involves configuring subbands for full duplex communication by providing subband configuration information that includes frequency and time resource configuration, allowing for efficient downlink and uplink operations based on common resource blocks or subband patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If subband configuration is implemented for full duplex communication, then downlink and uplink transmission efficiency is improved, but system complexity increases due to additional frequency and time resource configuration
Solution Approach 1:
The patent divides the frequency spectrum into multiple subbands and configures them independently for full duplex communication. Each subband can be separately assigned for downlink or uplink transmission, allowing granular resource management. This segmentation enables simultaneous downlink and uplink operations in different frequency portions, improving overall transmission efficiency while maintaining manageable complexity through structured resource division.
Solution Approach 2:
The patent implements dynamic subband configuration where frequency and time resources can be flexibly allocated based on traffic demands. The system can adaptively adjust which subbands are assigned to downlink or uplink at different time instances, enabling dynamic full duplex operation. This dynamic approach optimizes resource utilization without requiring permanent fixed assignments, balancing efficiency gains with configuration flexibility.
2Ease of operation
If common resource block configuration is used for subband, then frequency resource allocation is simplified, but flexibility in time resource management is reduced
Solution Approach 1:
The patent segments time resources into distinct time instances or slots associated with different subbands. While frequency resources are managed through common resource blocks for simplicity, time resources are divided and assigned to specific subbands based on communication direction requirements. This temporal segmentation restores flexibility in time resource management without complicating frequency resource allocation, allowing independent optimization of both dimensions.
Solution Approach 2:
The patent addresses the time resource flexibility limitation by introducing time as a separate dimension of resource management. Instead of relying solely on frequency domain common resource blocks, the system adds time domain configuration where each subband can have specific time resource assignments. This dimensional expansion allows the system to maintain simple frequency allocation while achieving the needed time resource adaptability for full duplex operations.
Data Source
AI summary
Disclosed are a method and apparatus for performing downlink transmission and reception and uplink transmission and reception in a wireless communication system. Subband configuration information for full duplex communication is transmitted from a base station to a UE. The UE performs the downlink reception or the uplink transmission through a subband based on the received subband configuration information. The subband configuration information includes frequency resource configuration information and time resource configuration information. In an event that the subband is configured based on the frequency resource configuration information, a frequency resource of the subband is configured based on a common resource block (CRB). In an event that the subband is configured based on the time resource configuration information, a time resource of the subband is configured based on at least one subband pattern having a period.