SBFD Slot Update Indication for Dynamic TDD Resource Patterns
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems, particularly in 5G NR, face challenges in efficiently adapting to dynamic changes in traffic patterns, leading to latency and inefficient resource utilization in subband full-duplex (SBFD) operations.
Innovation Solution
A method and apparatus for dynamically updating SBFD/non-SBFD time resource units by providing an update indication, allowing network entities to adapt resource patterns in response to traffic changes, enabling faster resource allocation and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If static resource patterns are used for TDD transmission, then device complexity is reduced and ease of operation is improved, but adaptability to traffic changes deteriorates and latency increases
Solution Approach 1:
The patent implements dynamic resource pattern updates by introducing a mechanism where the network entity can send update indications to change SBFD/non-SBFD configurations for specific time resource units. This allows the system to transition from static to dynamic resource allocation, enabling real-time adaptation to traffic patterns while maintaining manageable complexity through standardized update procedures.
Solution Approach 2:
The patent establishes pre-configured resource patterns that are prepared in advance through higher-layer signaling. These preliminary configurations include multiple candidate patterns that can be quickly switched between using update indications, allowing the system to respond rapidly to traffic changes without complex real-time calculations.
2Loss of time
If frequent resource pattern updates are implemented, then adaptability to traffic changes is improved and latency is reduced, but device complexity and signaling overhead increase
Solution Approach 1:
The patent segments the resource pattern updates by applying them to specific subsets of time resource units rather than requiring full-pattern updates. This segmentation allows selective updating of only those resource units affected by traffic changes, reducing overall update complexity and signaling overhead while maintaining low latency for affected resources.
Solution Approach 2:
The patent applies local quality by allowing different SBFD/non-SBFD configurations for different time resource units within the same transmission slot. This enables targeted optimization of specific resource units based on local traffic conditions without requiring system-wide reconfiguration, thereby reducing latency for specific flows while minimizing overall complexity.
3Productivity
If SBFD mode is used for all time resource units, then resource utilization is improved, but interference between uplink and downlink increases
Solution Approach 1:
The patent applies local quality by enabling SBFD mode selectively for specific time resource units where full-duplex operation is beneficial, while maintaining traditional TDD modes for other resource units where interference concerns prevail. This localized application of SBFD allows the system to maximize resource utilization in suitable conditions while avoiding interference issues in unsuitable conditions.
Solution Approach 2:
The patent implements dynamic switching between SBFD and non-SBFD modes for different time resource units based on real-time conditions. This dynamic approach allows the system to optimize resource utilization by activating SBFD when traffic patterns favor full-duplex operation while switching to traditional modes when interference becomes problematic, thereby achieving high productivity without sustained interference.
Data Source
AI summary
Apparatus, methods, and computer-readable media for providing an update indication for a semi-static configured SBFD/non-SBFD time resource unit are disclosed herein. An example method for wireless communication at a UE includes receiving a first resource pattern for one or more time resource units of a TDD transmission slot format pattern, wherein one of an FD communication mode or a non-FD communication mode is indicated for each time resource unit of the one or more time resource units based on the first resource pattern. The method also includes receiving an indication indicating a second resource pattern for a subset of the one or more time resource units. Additionally, the method includes communicating with a network entity in each respective time resource unit using a communication mode based on the second resource pattern.