Resource Management for Ultra Low Latency and Legacy Wireless Transmissions
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Solution Overview
Problem
Current wireless communication systems face challenges in managing resources effectively for ultra-low latency (ULL) and legacy transmissions, particularly in ensuring compatibility and minimizing interference across different transmission time intervals (TTIs) in multi-access technologies like LTE and 5G networks.
Innovation Solution
The system determines and configures different transmission time intervals (TTIs) and corresponding resource configurations for both ULL and legacy transmissions, allowing for flexible management of resources based on TTI lengths, which are less than a third TTI, enabling efficient communication by indicating these configurations to user equipment (UEs) and base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If different TTIs are used for ULL and legacy transmissions, then transmission latency is reduced for ULL, but resource management complexity increases
Solution Approach 1:
The patent segments the transmission system into distinct ULL and legacy TTI configurations, allowing each to be optimized independently. The base station determines and configures separate resource allocations for ULL transmissions (with shorter TTIs) and legacy transmissions (with longer TTIs), enabling low latency for ULL while maintaining compatibility with legacy devices. This segmentation resolves the contradiction by isolating the complexity of managing different TTI lengths to the base station's scheduling function.
Solution Approach 2:
The patent implements dynamic TTI configuration where the base station can determine first and second TTIs based on current network conditions and transmission requirements. The system dynamically adjusts which TTI to use for each transmission based on the UE's capabilities and the nature of the data, allowing flexible resource management that adapts to varying latency requirements without fixing the system in a single TTI mode.
2Adaptability or versatility
If multiple TTI configurations are supported, then system adaptability improves, but interference between transmissions increases
Solution Approach 1:
The patent applies local quality by configuring different TTIs and resource allocations specifically for different UE types (ULL-capable vs. legacy) and transmission types. The base station determines resource configurations tailored to each UE's capabilities, ensuring that ULL transmissions receive optimized short TTIs while legacy transmissions use standard TTIs, thereby reducing interference through targeted, localized optimization rather than uniform treatment.
Solution Approach 2:
The base station acts as an intermediary that manages and coordinates between ULL and legacy transmissions. It determines appropriate TTI configurations and resource allocations, mediating the potential conflicts between different transmission types by strategically assigning time-frequency resources to minimize interference while maintaining system adaptability to both ULL and legacy requirements.
3Productivity
If resource configurations are optimized for ULL, then transmission efficiency improves, but compatibility with legacy devices deteriorates
Solution Approach 1:
The patent implements universality by designing a hybrid TTI configuration system that can serve multiple device types simultaneously. The base station determines and configures both ULL TTIs (for high efficiency) and legacy TTIs (for compatibility), allowing the same network infrastructure to support both optimized ULL transmissions and legacy device operations. This multi-functional approach resolves the contradiction by making the system capable of optimizing for ULL while maintaining backward compatibility.
Data Source
AI summary
Certain aspects of the present disclosure relate to methods and apparatus for resource management for ultra low latency (ULL) and legacy transmissions. Certain aspects provide a method that can be performed by a user equipment (UE) which may be a ULL capable UE. The method generally includes receiving information indicating a first configuration based on a first transmission time interval (TTI) and a second configuration based on a second TTI, wherein: the first TTI and the second TTI are each less than a third TTI; and the first TTI and the second TTI are different; and communicating based on the first TTI according to the first configuration and based on the second TTI according to the second configuration.