Methods, First Network Node and Wireless Device for Radio Communication

A wireless device configured for radio communication with a first network node, wherein the wireless device comprising:

• a communication circuit;
• and
• a processor and a memory, the memory containing instructions executable by the processor whereby the wireless device is configured to:
• receive from the first network node a configuration of a first numerology for communication of a reference signal, the first numerology defining a first combination of subcarrier spacing and time between two successive Orthogonal Frequency-Division Multiplexing, OFDM, symbols,
• receive from the first network node a configuration of a second numerology for communication of data between the first network node and the wireless device, the second numerology defining a second combination of subcarrier spacing and time between two successive OFDM symbols, and
• receive from the first network node an assignment of data in the second numerology, the assignment comprising a trigger for the reference signal.

A first network node arranged for radio communication with a wireless device, wherein the first network node comprises:

• a communication circuit;
• and
• a processor and a memory, the memory containing instructions executable by the processor whereby the first network node is configured to:
• determine a first numerology for communication of a reference signal with the wireless device, the first numerology defining a first combination of subcarrier spacing and time between two successive Orthogonal Frequency-Division Multiplexing, OFDM, symbols,
• determine a second numerology for communication of data between the first network node and the wireless device, the second numerology defining a second combination of subcarrier spacing and time between two successive OFDM symbols,
• configure the wireless device with the first and second numerologies where the reference signal is associated with the first numerology, and
• transmit an assignment of data in the second numerology to the wireless device, the assignment comprising a trigger for the reference signal.

A method in a first network node for radio communication with a wireless device, the method comprising:

• determining a first numerology for communication of a reference signal with the wireless device, the first numerology defining a first combination of subcarrier spacing and time between two successive Orthogonal Frequency-Division Multiplexing, OFDM, symbols,
• determining a second numerology for communication of data between the first network node and the wireless device, the second numerology defining a second combination of subcarrier spacing and time between two successive OFDM symbols,
• configuring the wireless device with the first and second numerologies where the reference signal is associated with the first numerology, and
• transmitting an assignment of data in the second numerology to the wireless device, the assignment comprising a trigger for the reference signal.