Method for determining spectrum utilization

Patent metadata

Field	Value
Publication number	US-11582010-B2
Application number	US-201816330250-A
Country	US
Kind code	B2
Filing date	Aug 15, 2018
Priority date	Sep 11, 2017
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

According to certain embodiments, a method in a network node ( 100 A) for determining spectrum utilization for a plurality of numerologies transmitted within an allocated bandwidth includes selecting one or more of the plurality of numerologies. For each of the one or more selected numerologies, a spectrum utilization is determined. The spectrum utilization is based on the spectrum utilization that would be achieved if the selected numerology was transmitted across the allocated bandwidth. A physical resource block (PRB) allocation is calculated based on the allocated bandwidth and the spectrum utilization.

First claim

The invention claimed is:

1. A method for determining spectrum utilization for a plurality of numerologies transmitted within an allocated bandwidth, the method comprising:
selecting numerologies that are transmitted at either edge of the allocated bandwidth;
determining, for each of the selected numerologies, a spectrum utilization, wherein the spectrum utilization is based on the spectrum utilization that would be achieved if the selected numerology was transmitted in isolation across the entire allocated bandwidth;
determining a lowest spectrum utilization from the spectrum utilizations determined for the selected numerologies to be the basis of a spectrum utilization used for calculating a physical resource block, PRB, allocation; and
selecting the PRB allocation, wherein the PRB allocation is based on the allocated bandwidth and the determined lowest spectrum utilization.

2. The method of claim 1 , wherein:
the spectrum utilization comprises a first amount of bandwidth within the allocated bandwidth for user data, and
a second amount of bandwidth within the allocated bandwidth which is unused.

3. The method of claim 2 , wherein a portion of the second amount of bandwidth is disposed on each side of the first amount of bandwidth to operate as a guard between bandwidth allocations.

4. The method of claim 2 , wherein the second amount of bandwidth is determined based on the first amount of bandwidth.

5. The method of claim 1 , wherein calculating the PRB allocation comprises rounding the PRB allocation down to the nearest PRB.

6. The method of claim 1 , wherein the method is performed by a network node.

7. The method of claim 1 , wherein the method is performed by a wireless device.

8. An apparatus for determining spectrum utilization for a plurality of numerologies transmitted within an allocated bandwidth, the network node comprising:
processing circuitry configured to:
select numerologies that are transmitted at either edge of the allocated bandwidth;
determine, for each of the selected numerologies, a spectrum utilization, wherein the spectrum utilization is based on the spectrum utilization that would be achieved if the selected numerology was transmitted in isolation across the entire allocated bandwidth;
determine a lowest spectrum utilization from the spectrum utilizations determined for the selected numerologies to be the basis of a spectrum utilization used for calculating a physical resource block, PRB, allocation; and
select the PRB allocation, wherein the PRB allocation is based on the allocated bandwidth and the determined lowest spectrum utilization.

9. The apparatus of claim 8 , wherein:
the spectrum utilization is used for user data and comprises a first amount of bandwidth within the allocated bandwidth, and
a second amount of bandwidth within the allocated bandwidth is unused.

10. The apparatus of claim 9 , wherein a portion of the second amount of bandwidth is disposed on each side of the first amount of bandwidth to operate as a guard between bandwidth allocations.

11. The apparatus of claim 9 , wherein the second amount of bandwidth is determined based on the first amount of bandwidth.

12. The apparatus of claim 8 , wherein to calculate the PRB allocation the processing circuitry is configured to round the PRB allocation down to the nearest PRB.

13. The apparatus of claim 8 , wherein to determine the spectrum utilization the processing circuitry is further configured to use a predefined spectrum utilization, wherein the predefined spectrum utilization is based on one of a higher predefined bandwidth and a lower predefined bandwidth.

14. The apparatus of claim 8 , wherein the processing circuitry is configured to:
for each of the one or more selected numerologies, determine an amount of unused bandwidth on either side of the respective numerologies based on the spectrum utilization.

15. The apparatus of claim 8 , wherein the PRB allocation is based on a proportion of the allocated bandwidth.

16. The apparatus of claim 8 , wherein to determine the spectrum utilization the processing circuitry is further configured to use an interpolated spectrum utilization, wherein the interpolated spectrum utilization is based on a position of the allocated bandwidth compared to a predefined lower bandwidth and a predefined higher bandwidth.

17. The apparatus of claim 8 , wherein the spectrum utilization is determined based on information received from another node and/or based on the application of a rule.

18. The apparatus of claim 8 , wherein the apparatus comprises a network node.

19. The apparatus of claim 8 , wherein the apparatus comprises a wireless device.

20. A computer program product in the form of storage comprising a non-transitory computer readable medium storing computer readable program code, the computer readable program code operable, when executed by an apparatus to perform the method of claim 1 .

Assignees

• Ericsson Telefon Ab L M

Inventors

• Chapman Thomas
• Ghasemzadeh Farshid

Classifications

• H04L5/0058 Primary

  Allocation criteria · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04W72/044

  based on the type of the allocated resource · CPC title

• H04W72/04

  Wireless resource allocation · CPC title

• H04L5/0007 Primary

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title