Based on the white papers and presentations that I saw (Ref [1] for example), they define 'MiniSlot' as a slot that carries PDSCH or PUSCH with only a few symbol length (e.g, 2 symbols, 4 symbols etc) as illustrated below. How to implement MiniSlot ?
This is known as "mini-slot" transmission. This facilitates very low latency for critical data communication as well as minimizes interference to other RF links. Mini-slot helps to achieve lower latency in 5G NR architecture. Table below mentions typical fixed slots used in a 5G NR frame structure.
A mini-slot in 5G is a new concept that allows for low latency communication and is the minimum scheduling unit used in 5G NR. Mini-slots can contain 7, 4, or 2 OFDM symbols, regardless of numerology.
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Mini-slots allow the 5G frame structure to provide faster response times for certain applications. In an emergency situation, where a fraction of a second can make a significant difference, the deployment of a mini-slot can ensure the prompt delivery of vital information.
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My Friend: So, what is mini-slot? Me: It is the minimum scheduling unit used in 5G NR, it occupies 2, 4 or 7 OFDM symbols (regardless of numerology ), so a user can be allocated a mini-slot which is less than the slot (14 symbols) and it is suitable for low latency communication.
Mini-slot is introduced in 5GNR in Release 15 as a minimum unit for data scheduling. Mini-slot is used for the following scenario: Low latency for URLLC communications
A slot is a time interval during which data can be transmitted. Slots are part of the time-division multiplexing (TDM) scheme used in 5G. In the Time Division Duplex (TDD) mode of operation, a frame is divided into slots, and each slot is allocated for uplink or downlink communication.
In this paper, we propose a novel low-latency packet transmission scheme, referred to as ultra-mini slot transmission (UMST), suitable for the short packet transmission in URLLC scenario. Key idea of the proposed scheme is to transform the transmit information into subcarrier positions and then decode it using a small amount of time-domain ...