Terminal Device Frame Format Configuration for Full-Duplex Subframe Identification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communications systems using time division duplex (TDD) mode, terminal devices often fail to identify full-duplex subframes, leading to significant interference from other devices, which hampers communication quality and efficiency.
Innovation Solution
A method where a network device sends configuration information to a terminal device to determine the locations of full-duplex and normal subframes within a radio frame, allowing the terminal device to differentiate and perform separate radio measurements to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device does not learn of full-duplex subframes, then the system maintains simple operation, but the terminal device experiences strong interference from other devices in different transmission directions
Solution Approach 1:
The network device sends configuration information to the terminal device in advance, indicating the locations of full-duplex subframes and normal subframes. This preliminary action allows the terminal device to proactively identify and differentiate between subframe types before actual transmission occurs, enabling it to avoid strong interference by adjusting its transmission/reception behavior accordingly, thus improving communication quality without adding complex real-time detection mechanisms
Solution Approach 2:
Configuration information acts as an intermediary between the network device and terminal device. This intermediary carries indicators (such as bitmap representations) that convey subframe type information from the network to the terminal, allowing the terminal to identify full-duplex subframes without directly detecting interference or implementing complex coordination protocols, thereby resolving the contradiction between reliability and device complexity
2Productivity
If the terminal device performs separate radio measurements on full-duplex and normal subframes, then link adaptation is optimized, but the measurement and processing time increases
Solution Approach 1:
The network device provides configuration information in advance that identifies full-duplex subframe locations. This preliminary action allows the terminal device to perform separate radio measurements on full-duplex and normal subframes without requiring real-time detection or complex timing coordination, as the measurement targets are predetermined. The terminal can efficiently allocate measurement resources based on the pre-provided configuration, optimizing link adaptation while minimizing measurement time
Solution Approach 2:
The terminal device performs separate radio measurements on full-duplex subframes and normal subframes independently. This segmentation allows the terminal to treat different subframe types as distinct measurement targets, enabling optimized link adaptation for each type. By segmenting the measurement process according to pre-configured subframe locations, the terminal avoids unnecessary measurements and reduces overall measurement time while improving throughput
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The present invention relates to the field of wireless communications technologies, and in particular, to a terminal device, a network device, a frame format configuration method, and a system, so that the terminal device learns of subframes that are full-duplex subframes in a radio frame. The terminal device includes: a receiving module, configured to receive first configuration information that is of a frame format configuration and that is sent by a network device, where the first configuration information is used for determining, by the terminal device, locations, in a radio frame, of a full-duplex subframe and a normal subframe in the radio frame based on the first configuration information; and a processing module, configured to determine the locations, in the radio frame, of the full-duplex subframe and the normal subframe in the radio frame based on the first configuration information, where the full-duplex subframe is a subframe in which the network device can simultaneously perform downlink transmission and uplink reception in the radio frame, and the normal subframe is a subframe in the radio frame other than the full-duplex subframe. The terminal device determines the full-duplex subframe and the normal subframe based on the first configuration information.