Telecom Techniques Guide


What is the transmission time interval tti of 5G supports?

Transmission Time Interval (TTI) defines the duration of a radio frame for data transmission and reception. 5G supports a range of TTI values, from as short as 1 millisecond for ultra-low-latency applications like remote surgery to longer intervals like 10 milliseconds or more for less time-sensitive services such as video streaming. This flexibility allows the network to adapt to various use cases, optimizing performance and latency accordingly.

What is the transmission time interval tti of 5G supports?

In 5G networks, the Transmission Time Interval (TTI) is a critical parameter that plays a crucial role in determining how data is transmitted between the base station (NodeB/gNB) and user devices (UEs). The TTI defines the duration of a radio frame, during which data can be transmitted or received. It’s important to note that the TTI in 5G can vary depending on the specific use case and configuration, but I’ll provide some general details about typical TTI values.

TTI Basics:

TTI is measured in milliseconds (ms) and represents the time interval during which data can be transmitted or received in a 5G network.

5G networks are designed to support flexible TTIs, which can be configured to meet the requirements of different applications and services.

TTI Values:

5G networks can support various TTI values, ranging from as short as 1 millisecond (1 ms) to longer intervals like 10 ms, 20 ms, and even 40 ms or more.

Shorter TTIs, such as 1 ms or 0.5 ms, are typically used for low-latency applications like ultra-reliable low-latency communication (URLLC), which includes services like autonomous vehicles and industrial automation.

Longer TTIs, like 10 ms or 20 ms, may be used for applications that don’t require ultra-low latency, such as mobile broadband or massive machine-type communication (mMTC).

Use Cases:

Short TTI (1 ms or less): Ideal for real-time applications where low latency is crucial, such as remote surgery, augmented reality (AR), or virtual reality (VR).

Medium TTI (10 ms or 20 ms): Suited for applications like video streaming, online gaming, and standard internet browsing.

Longer TTI (40 ms or more): May be used for less time-sensitive applications, like software updates and bulk data transfers.


5G networks are designed to be highly flexible, allowing the network to adapt TTIs dynamically based on network conditions, user requirements, and traffic load.

This flexibility ensures that the network can provide the best possible performance for various services and applications.

Transmission Time Interval (TTI) in 5G is a variable time interval that determines how data is transmitted in the network. It can range from very short intervals for low-latency applications to longer intervals for less time-sensitive services. The flexibility of 5G networks allows for dynamic TTI adjustment to optimize performance for different use cases.

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