Subframe Duration Handling for Wireless Latency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, reducing latency by shortening the transmission time interval (TTI) is challenging due to difficulties in efficiently transmitting and receiving shortened subframes, leading to degraded resource utilization and scheduling performance.
Innovation Solution
A method and communication device that handle communication operations by transmitting and receiving subframes of different durations, determining a third type subframe duration based on the relationship between first and second type subframes, and performing communication operations using a multiplexing scheme across multiple subframes of the first type within at least one subframe of the third type via a physical channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the transmission time interval (TTI) is shortened to reduce latency, then latency is reduced, but the transmission and reception of shortened subframes cannot be properly handled, leading to degraded resource utilization and scheduling performance
Solution Approach 1:
The patent segments the subframe structure into different types (first type with shorter duration, second type with longer duration, and third type with determined duration). This segmentation allows the system to handle multiple TTI lengths simultaneously, enabling latency reduction through shorter TTIs while maintaining proper resource allocation and scheduling through structured subframe classification and multiplexing schemes.
2Loss of time
If the transmission time interval (TTI) is shortened to reduce latency, then latency is reduced, but scheduling performance is degraded due to inability to properly handle shortened subframes
Solution Approach 1:
The patent implements dynamic TTI handling by allowing the system to flexibly switch between different subframe types (first type with shorter duration for low latency, second type with longer duration for stable scheduling, and third type with determined duration). The network can dynamically configure and switch between these subframe types based on traffic requirements, maintaining both low latency capability and scheduling performance through adaptive resource allocation.
3Productivity
If subframes of different durations are transmitted, then resource utilization is enhanced, but the system becomes more complex in handling non-integral multiple relationships between subframe durations
Solution Approach 1:
The patent manages system complexity by systematically defining and configuring different subframe duration parameters (first type with shorter duration, second type with longer duration, and third type with determined duration). The network configures these parameter variations through signaling, allowing the system to handle non-integral multiple relationships between subframe durations through standardized parameter management rather than ad-hoc complexity.
Data Source
AI summary
A network transmitting a duration of a subframe of a first type to a communication device; transmitting a multiplexing scheme for the subframe of the first type and a subframe of a second type to the communication device, wherein the duration of the subframe of the first type is shorter than a duration of the subframe of the second type; determining a duration of a subframe of a third type, wherein the duration of the subframe of the second type is not an integral multiple of the duration of the subframe of the first type; transmitting the duration of the subframe of the third type to the communication device; and performing the communication operation in a plurality of subframes of the first type in at least one subframe of the third type according to the multiplexing scheme via a physical channel.