5G NR Full-Duplex Timing Across TDD Uplink and Downlink
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for more accurate and efficient methods of transmitting and receiving signals in wireless communication systems, particularly in next-generation radio access technologies like 5G NR, to support enhanced mobile broadband communication, massive Machine Type Communication (MTC), and Ultra-Reliable and Low Latency Communication (URLLC).
Innovation Solution
The method involves configuring downlink and uplink time durations within a time resource period and specifying a first time duration for full-duplex operation based on indication information, considering the boundary of uplink and downlink time durations, and using different transmission power control parameters for different operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex operation is implemented in wireless communication systems, then communication capacity and spectral efficiency are improved, but interference management and signal transmission accuracy become more difficult
Solution Approach 1:
The patent segments the time resource period into distinct downlink time duration and uplink time duration, with a flexible time duration in between. This segmentation allows the system to perform full-duplex operations in the flexible time duration while maintaining clear separation between downlink and uplink transmissions, thereby managing interference while preserving communication capacity.
Solution Approach 2:
The patent introduces dynamic indication information that specifies the first time duration within the flexible time duration for full-duplex operation. This dynamic approach allows the system to adaptively adjust the full-duplex operation parameters based on channel conditions and traffic requirements, optimizing both communication capacity and signal transmission accuracy.
2Productivity
If flexible time duration is added to accommodate full-duplex operation, then resource utilization efficiency is improved, but time resource configuration complexity increases
Solution Approach 1:
The flexible time duration is designed to serve multiple functions: it can accommodate full-duplex operations, serve as guard periods, or be dynamically allocated for either downlink or uplink transmissions. This multi-functionality improves resource utilization efficiency while the standardized indication mechanism keeps configuration complexity manageable.
Solution Approach 2:
The TDD configuration information is provided in advance to define the flexible time duration, and indication information is provided beforehand to specify the first time duration within it. This preliminary action allows UEs to prepare for full-duplex operations without requiring complex real-time configuration changes.
3Loss of information
If indication information specifies only partial parameters (start symbol, last symbol, or duration), then signaling overhead is reduced, but processing complexity at UE increases
Solution Approach 1:
The UE is empowered to autonomously determine the first time duration by combining the partially specified parameters (start symbol, last symbol, or duration) with its knowledge of the TDD configuration information. This self-service approach reduces signaling overhead while the standardized determination rules keep UE processing complexity manageable.
4Productivity
If different transmission power control parameters are used for full-duplex and half-duplex operations, then communication efficiency is improved, but power control complexity increases
Solution Approach 1:
Different transmission power control parameters are applied specifically to the first time duration (full-duplex operation) versus the second time duration (half-duplex operation). This localized quality approach optimizes communication efficiency for each operation mode while keeping the power control mechanism relatively simple through clear temporal separation.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A terminal according to various embodiments may: receive TDD configuration information for configuring a downlink time duration and an uplink time duration within a time resource period; receive indication information specifying a first time duration associated with full duplex operation of a base station within the time resource period; and perform communication with the base station on the basis of the indication information and the TDD configuration information, wherein on the basis of the indication information indicating only one of a start symbol, a last symbol, and duration of the first time duration, the first time duration is specified by further considering the boundary of one time duration among the uplink time duration and the downlink time duration.