Wireless Node Resource Scheduling for Flexible Duplex Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges with resource utilization and latency due to half-duplex modes in time division duplexing (TDD) spectra, leading to self-interference and cross-link interference, which are not effectively addressed by conventional duplex technologies.
Innovation Solution
A flexible duplex mode is implemented using a unified design scheme for different scenarios, allowing for flexible adjustment of physical resources based on duplex modes, interference environments, antennas, and spatial characteristics, with a method involving the use of reference symbol groups and time sub-window groups to determine actual transmission resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If half-duplex mode is used in TDD spectrum, then self-interference is avoided, but resource utilization decreases and latency increases
Solution Approach 1:
The patent implements dynamic determination of actual transmission resources by introducing reference symbol groups and time sub-window groups that adaptively identify valid transmission symbols based on duplex mode configurations. This allows the system to dynamically adjust which time resources are actually used for transmission, enabling flexible transition between half-duplex and full-duplex operations without fixed resource allocation, thereby improving resource utilization while managing self-interference through adaptive resource selection.
2Productivity
If flexible duplex mode is implemented, then resource utilization improves, but hardware complexity increases
Solution Approach 1:
The patent segments the transmission time resources into reference symbol groups and time sub-window groups, where reference symbol groups identify valid transmission symbols and time sub-window groups define actual transmission windows. This segmentation allows the system to process and manage flexible duplex resources in discrete, manageable units through signaling mechanisms, reducing the complexity burden by breaking down the flexible resource management into structured, signalizable components rather than requiring complex continuous control.
3Device complexity
If unified design scheme is used for different duplex modes, then hardware complexity is reduced, but adaptability to specific scenarios decreases
Solution Approach 1:
The patent implements a universal resource determination mechanism that works across different duplex modes (half-duplex, full-duplex, flexible duplex) by defining a common framework of reference symbol groups and time sub-window groups. The same signaling structure and resource determination procedures are applied universally regardless of the specific duplex mode, allowing a single hardware design to handle multiple scenarios through configurable parameters rather than mode-specific implementations, thus achieving both complexity reduction and scenario adaptability.
Data Source
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Figure 7B~12
AI summary
The present application discloses a method and apparatus used in a node for wireless communication. A first node receives a first information block, receives first signaling, and sends a first signal in a first time sub-window group in a first time pool. The first information block is used to determine a reference time domain resource set. The first signaling indicates scheduling information of the first signal, the first signaling is used for determining the first time pool, and the first time pool comprises more than one symbol. A reference symbol group is used for determining the first time sub-window group, and the reference symbol group depends on whether the first time pool and the reference time domain resource set overlap. When the first time pool is orthogonal to the reference time domain resource set, the reference symbol group is a first symbol group. When the first time pool belongs to the reference time domain resource set, the reference symbol group is a second symbol group.