Sub-Band TDD Resource Configuration for Simultaneous UL and DL
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication technologies face challenges in achieving simultaneous uplink and downlink transmissions within the same slot due to limitations in TDD frame structure configurations, which hinder UL coverage performance and increase service delay, particularly in scenarios requiring high UL transmission rates and low latency.
Innovation Solution
Implementing a method for resource configuration that allows a terminal to receive multiple TDD-UL-DL configurations, one applied to a specific sub-band resource and another representing a cell-specific configuration, enabling simultaneous UL and DL transmissions on different sub-bands of a TDD carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a terminal uses a single cell-specific TDD frame structure configuration, then the configuration is simple and easy to manage, but simultaneous uplink and downlink transmissions within the same slot cannot be achieved, limiting UL coverage performance and increasing service delay
Solution Approach 1:
The patent divides the frequency spectrum into multiple sub-bands and applies different TDD-UL-DL configurations to different sub-bands. Specifically, a first TDD-UL-DL configuration is applied to a first sub-band while a second configuration is applied to a second sub-band, enabling simultaneous UL and DL transmissions in different frequency regions within the same slot. This segmentation resolves the contradiction by allowing full-duplex operation without requiring a complete overhaul of the configuration system.
Solution Approach 2:
The patent implements local quality by allowing different TDD configurations in different sub-bands. The first sub-band can be configured for UL transmission while the second sub-band is configured for DL transmission in the same slot, creating localized transmission characteristics optimized for specific service requirements. This enables simultaneous UL and DL operations without imposing complex configurations across the entire bandwidth.
2Productivity
If traditional TDD configuration is used, then the system is simple to operate, but UL transmission rate is limited and service delay increases, particularly for high-data-rate services
Solution Approach 1:
The patent introduces dynamic sub-band specific TDD configurations that can be flexibly adjusted based on service requirements. The network can dynamically allocate UL and DL sub-bands according to real-time traffic conditions, enabling high UL transmission rates when needed while maintaining low service delay. This dynamic approach allows the system to adapt to varying service demands without being constrained by a fixed TDD configuration.
Solution Approach 2:
The patent changes the TDD configuration parameters at the sub-band level rather than using a uniform configuration across the entire carrier. By introducing sub-band specific parameters (first TDD-UL-DL configuration for first sub-band, second configuration for second sub-band), the system can optimize UL transmission rate and reduce service delay for specific frequency regions while maintaining overall system simplicity.
Data Source
AI summary
A resource configuration method performed by a terminal, includes: receiving at least one first configuration applied to a first sub-band resource sent by a base station, in which the first configuration includes one or more of: a period, a reference subcarrier interval, and a transmission configuration, the transmission configuration comprises a transmission configuration applied to the first sub-band resource for all downlink (DL) transmission, a transmission configuration applied to the first sub-band resource for all uplink (UL) transmission, or a transmission configuration applied to the first sub-band resource for both UL and DL transmission; and receiving a second configuration sent by the base station, in which the second configuration represents a cell specific TDD-UL-DL configuration.