TTI Bundling Size Adjustment by Communication Type
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Solution Overview
Problem
In wireless communication systems, the existing TTI bundling approach based on Quality of Service (QoS) classes can lead to inefficient battery usage and increased channel utilization, causing delays due to the uniform application of bundling sizes across different types of wireless communications, which may not be optimized for specific communication types or channel loads.
Innovation Solution
Implementing a method where the Radio Access Network (RAN) determines the specific type of wireless communication and adjusts the TTI bundling size based on the communication type, rather than relying solely on QoS classes, to optimize data transmission and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TTI bundling is applied uniformly based on QoS class, then reliability of data transmission is improved, but battery consumption increases and channel utilization efficiency deteriorates
Solution Approach 1:
The patent applies different TTI bundling sizes based on the specific communication type rather than uniformly across all communications of a QoS class. For example, communication type 1 uses bundling size 4 while communication type 2 uses bundling size 2, optimizing battery consumption and channel utilization for each specific communication type while maintaining the required reliability.
Solution Approach 2:
The patent dynamically adjusts the TTI bundling size based on the detected communication type. The RAN detects the communication type from incoming data and selectively applies different bundling sizes, making the system adaptive rather than static, thereby improving overall system efficiency while maintaining reliability.
2Reliability
If TTI bundling with larger bundling size is applied, then data transmission reliability is improved, but latency increases due to longer waiting periods for HARQ response
Solution Approach 1:
The patent applies different TTI bundling sizes matched to specific communication type requirements. Urgent communications receive smaller bundling sizes (reducing latency) while less time-sensitive communications receive larger bundling sizes (maximizing reliability), optimizing the reliability-latency tradeoff for each communication type.
3Reliability
If TTI bundling is applied to all communication types, then robustness of data reception is improved, but channel utilization efficiency deteriorates due to increased delay
Solution Approach 1:
The patent selectively applies TTI bundling based on communication type detection. Not all communication types receive bundling treatment - only those where the benefits outweigh the costs. This selective application maintains robustness for critical communications while preserving channel utilization efficiency for others.
Solution Approach 2:
The system dynamically determines whether to apply TTI bundling and at what size based on the specific communication type detected from incoming data. This dynamic decision-making process optimizes channel utilization by avoiding unnecessary bundling for communications that don't require it.
Data Source
AI summary
Disclosed herein is a method and corresponding system for TTI bundling based on communication type. The method may involve receiving an indication of a wireless communication, where the wireless communication may be of a particular quality of service and a particular type. The method may further involve responsive to receiving the indication, (i) determining the particular type of the wireless communication and (ii) determining, based at least in part on the determined particular type of the wireless communication, TTI bundling with a bundling size, N, should be invoked for transmitting data of the wireless communication, where N>1. And the method may involve responsive to determining that TTI bundling with the bundling size N should be invoked for transmitting data of the wireless communication, invoking TTI bundling with the bundling size N for transmitting the data of the wireless communication.