Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

Koninklijke Kpn N.v.

Kallol Das

Ljupco Jorguseski

Haibin Zhang

Remco Litjens

Wieger Ijntema

A first method comprises transmitting data () of a first kind during a first part of a first time slot (ti) of a plurality of time slots (ti-ti) of equal length according to a regular slot schedule, transmitting a preamble () in a second part of the first time slot, and transmitting data of the second kind during one or more mini-slots of a first part of a second time slot (ti) of the time slots according to a mini-slot schedule. The second time slot succeeds the first time slot and the first part of the second time slot comprises a plurality of mini-slots (). A second method comprises receiving the data of the first kind during the first part of the first time slot, receiving the preamble in the first time slot, and receiving data during a plurality of the mini-slots of the second time slot.

Switching to mini-slots for transmission of urgent data

A first method comprises transmitting () a preamble in a first time interval in a first frequency resource, transmitting () a first portion or a first copy of data in the first frequency resource in a second time interval, and transmitting () a second portion or second copy of the data in a second frequency resource in the second time interval. The second time interval succeeds the first time interval and the second frequency resource is separate from the first frequency resource. A second method comprises listening () for transmission of a preamble, transmitting () data in a second time interval succeeding a first time interval upon determining that the preamble was not received in the first time interval, and refraining () from transmitting data in the second time interval upon determining that the preamble was received in the first time interval.

Reliable low latency communication over shared resources

A method comprises listening () for transmission of a preamble by a transmitting device to a recipient and receiving () data in a second time interval upon receiving the preamble in a first time interval. The second time interval succeeds the first time interval. The method further comprises listening () for transmission by the recipient of a message, e.g. a NACK, indicating that data transmitted in the second time interval was not successfully received by the recipient and retransmitting () the data in a fourth time interval upon receiving the message in a third time interval.

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Pijnacker, Netherlands

Kallol Das