Network Node, Wireless Device and Methods Therein Relating to Time Division Duplex Configurations for Narrowband Internet of Things

A method in a network node is provided. The method comprises determining (1304) a frame structure configuration for a narrowband Internet of Things (NB-IoT) system operating in time division duplex (TDD) mode. The frame structure comprises a plurality of subframes. The plurality of subframes compris...

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Bibliographische Detailangaben
Hauptverfasser:	BEHRAVAN, Ali, SHOKRI RAZAGHI, Hazhir
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	A method in a network node is provided. The method comprises determining (1304) a frame structure configuration for a narrowband Internet of Things (NB-IoT) system operating in time division duplex (TDD) mode. The frame structure comprises a plurality of subframes. The plurality of subframes comprises at least one of each of a downlink subframe, an uplink subframe, and a special subframe comprising a gap period during which no transmission occurs. The plurality of subframes is arranged such that the frame structure configuration is compatible with an uplink configuration of the NB-IOT system, e.g. having a subcarrier spacing of 3.75 kHz. The method further comprises communicating the determined frame structure configuration to a wireless device operating in the NB-IoT system.