We Claim:
1. A device to process a channel state information
reference signal CSI-RS and further data to be
transmitted via a first radio module of a radio
communications network, in which data to be
transmitted is mapped on subcarriers and in the radio
module subsequently up-converted to a radio frequency
higher than the subcarrier frequencies, wherein the
subcarriers are grouped into frequency subbands, and
wherein at least one subband is scalable with at least
one subband parameter for a period of time, wherein a
subband parameter is in particular a subcarrier
spacing, and wherein in at least one subband at least
two different parameters, in particular subcarrier
spacings, can be used,
wherein the device comprises at least a processor and a memory, and is configured to:
- determine a first CSI-RS and a second CSI-RS,
- determine first further data and second further data;
- allocate for a first period of time the first CSI-RS to a first subband and the second CSI-RS to a second subband of a time-frequency resource,
- allocate for a second period of time subsequent to and different from the first period of time the first further data to the first subband and the second further data to the second subband, and
- map the first CSI-RS, the second CSI-RS,
the first further data and the second further data to subcarriers corresponding to the allocated subbands.
2. The device according to claim 1, wherein the device is
further configured to: - allocate for a first period
of time a common subband parameter, in particular the

same subcarrier spacing, to both the first and the second subband and to allocate for the second period of time a subband parameter different from the common subband parameter to at least the second subband.
3. The device according to claim 1, wherein the device is further configured to: - allocate for the first and the second period of time a common first subband parameter, in particular the same subcarrier spacing, to the first subband, and to allocate for the first and the second period of time a common second subband parameter, different from the first subband parameter, to the second subband.
4. The device according to claim 3, wherein the device is further configured to: - allocate for the first period of time a guard band between the first subband and the second subband, the first and the second subband being adjacent in frequency.
5. The device according to claim 1, and wherein the device is further configured to: - align for at least the first period of time one subband parameter, in particular a subcarrier spacing, of the first subband with a corresponding subband parameter of a corresponding subband used or to be used by a second radio module.
6. The device according to claim 1, and wherein the further data includes at least two of the following: end user data, end user radio resource control, demodulation reference signal.
7. The device according to claim 5, wherein the at least one subband parameter is stored on the memory as at least one preconfigured value.

8. The device according to claim 1, wherein the least one allocatable subband parameter is reveived from a further device via a backhaul network.
9. The device according to claim 2 or 3, wherein the at least one allocated common subband parameter is transmitted to a further device.
10. The device according to claim 1, wherein the device is configured to:

- receive a service request from a user equipment, and
- determine the allocatable subband parameter in dependence on the service request.
11. The device according to claim 1, wherein the device is
configured to:
- receive a first sounding symbol, a second sounding
symbol, a third further data and a fourth further data
via subcarriers corresponding to allocated subbands, wherein for a third period of time subsequent to and different from a fourth period of time the third further data is allocated to the third subband and the fourth further data to the fourth subband, wherein for the third period of time the first sounding symbol is allocated to the third subband and the second sounding symbol is allocated to the third subband of a time-frequency resource,
- determine the first sounding symbol and the second sounding symbol,
- determine the third further data and the third further data
12. A user equipment to process a channel state
information reference signal CSI-RS and further data
to be received via a radio communications network, in
which data to be transmitted is mapped on subcarriers

and subsequently up-converted to a radio frequency higher than the subcarrier frequencies, wherein the subcarriers are grouped into frequency subbands, and wherein at least one subband is scalable with at least one subband parameter for a period of time, wherein a subband parameter is in particular a subcarrier spacing, and wherein in at least one subband at least two different parameters, in particular subcarrier spacings, can be used,
wherein the user equipment comprises at least a processor and a memory, and is configured to:
- receive a first CSI-RS, a second CSI-RS,
a first further data and a second further data via subcarriers corresponding to allocated subbands, wherein for a second period of time subsequent to and different from a first period of time the first further data is allocated to the first subband and the second further data to the second subband, wherein for the first period of time the first CSI-RS is allocated to the first subband and the second CSI-RS is allocated to the second subband of a time-frequency resource,
- determine the first CSI-RS and the second CSI-RS,
- determine the first further data and the second further data.
A user equipment wherein the user equipment is configured to process a sounding symbol and further data to be transmitted via a radio communications network, in which data to be transmitted is mapped on subcarriers and subsequently up-converted to a radio frequency higher than the subcarrier frequencies, wherein the subcarriers are grouped into frequency subbands, and wherein at least one subband is scalable with at least one subband parameter for a period of time, wherein a subband parameter is in particular a

subcarrier spacing, and wherein in at least one subband at least two different parameters, in particular subcarrier spacings, can be used, wherein the user equipment comprises at least a processor and a memory, and is configured to:
- determine a first sounding symbol and a second sounding symbol,
- determine first further data and second further data;
- allocate for a first period of time the first sounding symbol to a first subband and the second sounding symbol to a second subband of a time-frequency resource,
- allocate for a second period of time subsequent to and different from the first period of time the first further data to the first subband and the second further data to the second subband, and
- map the first sounding symbol, the second sounding symbol, the first further data and the second further data to subcarriers corresponding to the allocated subbands.