Terminal Resource Allocation for Sub-Band Full Duplex TDD
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The limitation of a fixed uplink/downlink slot ratio in time division duplex (TDD) systems leads to transmission delays and inability to meet diverse service requirements, while sub-band full duplex (SBFD) scenarios lack effective data transmission methods for frequency-domain resources with different transmission directions.
Innovation Solution
A data transmission method and terminal device that determine M resources from a frequency-domain resource set, allowing for uplink and downlink transmission on segments of frequency-domain resources, enabling simultaneous data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed uplink/downlink slot ratio is used in TDD systems, then base station implementation complexity is reduced, but transmission delay increases and diverse service requirements cannot be met
Solution Approach 1:
The patent divides the frequency-domain resources into multiple segments, where each segment can be independently configured with different uplink/downlink directions. This segmentation allows flexible resource allocation to meet diverse service requirements while maintaining manageable base station implementation complexity through modular resource management.
Solution Approach 2:
The patent introduces dynamic resource allocation mechanisms that allow the uplink/downlink slot ratio to be flexibly adjusted based on service requirements. Through dynamic indication information and configurable resource segments, the system can adaptively optimize transmission timing to reduce transmission delay while keeping the base station complexity controlled through standardized procedures.
Solution Approach 3:
The patent transitions from time-domain only resource allocation to frequency-time domain joint resource allocation. By introducing frequency-domain segmentation as an additional dimension, the system achieves flexible uplink/downlink configuration without significantly increasing base station implementation complexity, as the segmentation follows standardized frequency resource management principles.
2Device complexity
If a single uplink/downlink slot ratio is used, then base station implementation complexity is simplified, but the ability to meet diverse service requirements deteriorates
Solution Approach 1:
The patent segments frequency-domain resources into multiple independent segments, each capable of having different uplink/downlink configurations. This allows the base station to provide diversified service support through standardized segmentation procedures, achieving high adaptability without significantly increasing implementation complexity.
Solution Approach 2:
The patent creates a universal resource allocation framework where the same base station infrastructure can support multiple services with different uplink/downlink requirements. Through configurable resource segments and standardized indication mechanisms, a single base station implementation can universally serve diverse services including eMBB, URLLC, and mMTC.
3Productivity
If frequency-domain resources with different transmission directions are used simultaneously, then data transmission efficiency is improved, but interference management complexity increases
Solution Approach 1:
The patent segments frequency-domain resources into distinct segments with designated uplink or downlink directions. This segmentation naturally isolates interference between opposite-direction transmissions, allowing efficient simultaneous full-duplex operation while keeping interference management complexity manageable through clear resource boundary definitions.
Solution Approach 2:
The patent applies different transmission direction properties to different frequency segments locally. Each segment is optimized for its specific direction (uplink or downlink), allowing efficient simultaneous operation while simplifying interference management through localized quality control rather than global interference coordination.
Data Source
AI summary
A data transmission method and a terminal device are provided. The method includes the following. A terminal device determines M resources from a frequency-domain resource set, and performs data transmission with a network device on the M resources, where the M resources are M resource block (RB) sets or M RBs, the frequency-domain resource set includes at least one segment of frequency-domain resources, the at least one segment of frequency-domain resources includes at least one segment of uplink frequency-domain resources and/or at least one segment of downlink frequency-domain resources, and M is an integer and M>0.