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1. WO2020117433 - AFFINEMENT DE FAISCEAU DANS UN CANAL D'ONDE MILLIMÉTRIQUE

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[ EN ]

CLAIMS

What is claimed is:

1. A method for wireless communication by a first wireless device, comprising:

performing a first set of beam measurements for a first plurality of beams over a wireless channel between the first wireless device and a second wireless device, each beam in the first plurality of beams having a first beam -width;

transmitting to the second wireless device a first beam measurement report for the first plurality of beams, the first beam measurement report indicating a beam sweep order for a second set of beam measurements for a second plurality of beams;

performing the second set of beam measurements for the second plurality of beams over the wireless channel according to the indicated beam sweep order, each beam in the second plurality of beams having a second beam-width that is narrower than the first beam-width;

transmitting to the second wireless device a second beam measurement report based at least in part on the second set of beam measurements; and

receiving from the second wireless device an indication of a beam selection for transmissions from the second wireless device based at least in part on the first and second set of beam measurements.

2. The method of claim 1, further comprising:

identifying, based at least in part on the first set of beam measurements, one or more clusters associated with one or more of the beams of the first plurality of beams.

3. The method of claim 2, further comprising:

transmitting an indication of the identified one or more clusters associated with the one or more of the beams from the first plurality of beams to the second wireless device.

4. The method of claim 2, wherein identifying the one or more clusters comprises:

performing a time domain correlation of a delay spread for each beam from the first plurality of beams.

5. The method of claim 2, wherein identifying the one or more clusters comprises:

assigning a unique receive beam weighting factor to each of two or more receive radio frequency chains of the first wireless device; and

identifying, based at least in part on reception with the unique receive beam weighting factor, a received signal strength for each receive radio frequency chain of the two or more receive radio frequency chains.

6. The method of claim 2, further comprising:

selecting the beam sweep order based at least in part on the one or more clusters associated with the wireless channel.

7. The method of claim 6, further comprising:

identifying multiple clusters associated with a first PI beam pair of the first plurality of beams and a second PI beam pair of the first plurality of beams, wherein the beam sweep order for the second set of beam measurements comprises a first P2 beam sweep of the first PI beam pair to obtain a first P2 beam pair, followed by a first P3 beam sweep of the first P2 beam pair to obtain a first P3 beam pair, followed by a second P2 beam sweep of the second PI beam pair to obtain a second P2 beam pair, followed by a second P3 beam sweep of the second P2 beam pair to obtain a second P3 beam pair.

8. The method of claim 6, further comprising:

identifying a single cluster associated with a first PI beam pair of the first plurality of beams and a second PI beam pair of the first plurality of beams, wherein the beam sweep order for the second set of beam measurements comprises a first P2 beam sweep of the first PI beam pair to obtain a first P2 beam pair, followed by a second P2 beam sweep of the second PI beam pair to obtain a second P2 beam pair, followed by a first P3 beam sweep of the first P2 beam pair to obtain a first P3 beam pair, followed by a second P3 beam sweep of the second P2 beam pair to obtain a second P3 beam pair.

9. The method of claim 1, wherein the beam sweep order comprises at least one of:

a sequential beam sweep order or a non-sequential beam sweep order for the second plurality of beams.

10. A method for wireless communication by a second wireless device, comprising:

transmitting a first plurality of beams over a wireless channel between the second wireless device and a first wireless device, each beam in the first plurality of beams having a first beam-width;

receiving, from the first wireless device, a first beam measurement report for the first plurality of beams, the first beam measurement report indicating a beam sweep order for a second set of beam measurements for a second plurality of beams;

transmitting the second plurality of beams according to the indicated beam sweep order, each beam in the second plurality of beams having a second beam-width that is narrower than the first beam-width;

receiving a second beam measurement report from the first wireless device based at least in part on the second plurality of beams; and

transmitting to the first wireless device an indication of a beam selected for transmissions from the second wireless device based at least in part on the first and second beam measurement reports.

11. The method of claim 10, further comprising:

receiving, from the first wireless device, an indication related to one or more clusters associated with the one or more of the beams of the second plurality of beams.

12. The method of claim 11, further comprising:

performing a time domain correlation of a delay spread for each beam from the first plurality of beams.

13. The method of claim 11, further comprising:

assigning a unique receive beam weighting factor to each of two or more receive radio frequency chains of the second wireless device; and

identifying, based at least in part on reception with the unique receive beam weighting factor, a received signal strength for each receive radio frequency chain of the two or more receive radio frequency chains.

14. The method of claim 11, further comprising:

selecting the beam sweep order based at least in part on the one or more clusters associated with the wireless channel.

15. The method of claim 10, wherein the beam sweep order comprises at least one of:

a sequential beam sweep order or a non-sequential beam sweep order for the second plurality of beams.

16. The method of claim 10, wherein one or more of the first plurality of beams or the second plurality of beams relate to backhaul traffic.

17. The method of claim 10, wherein one or more of the first plurality of beams or the second plurality of beams relate to access traffic.

18. A first wireless apparatus for wireless communication, comprising: means for performing a first set of beam measurements for a first plurality of beams over a wireless channel between the first wireless apparatus and a second wireless apparatus, each beam in the first plurality of beams having a first beam-width;

means for transmitting to the second wireless apparatus a first beam measurement report for the first plurality of beams, the first beam measurement report indicating a beam sweep order for a second set of beam measurements for a second plurality of beams;

means for performing the second set of beam measurements for the second plurality of beams over the wireless channel according to the indicated beam sweep order, each beam in the second plurality of beams having a second beam-width that is narrower than the first beam-width;

means for transmitting to the second wireless apparatus a second beam measurement report based at least in part on the second set of beam measurements; and

means for receiving from the second wireless apparatus an indication of a beam selection for transmissions from the second wireless apparatus based at least in part on the first and second set of beam measurements.

19. The first wireless apparatus of claim 18, further comprising:

means for identifying, based at least in part on the first set of beam

measurements, one or more clusters associated with one or more of the beams of the first plurality of beams.

20. The first wireless apparatus of claim 19, further comprising:

means for transmitting an indication of the identified one or more clusters associated with the one or more of the beams from the first plurality of beams to the second wireless apparatus.

21. The first wireless apparatus of claim 19, wherein the means for identifying the one or more clusters further comprise:

means for performing a time domain correlation of a delay spread for each beam from the first plurality of beams.

22. The first wireless apparatus of claim 19, wherein the means for identifying the one or more clusters further comprise:

means for assigning a unique receive beam weighting factor to each of two or more receive radio frequency chains of the first wireless apparatus; and

means for identifying, based at least in part on reception with the unique receive beam weighting factor, a received signal strength for each receive radio frequency chain of the two or more receive radio frequency chains.

23. The first wireless apparatus of claim 19, further comprising:

means for selecting the beam sweep order based at least in part on the one or more clusters associated with the wireless channel.

24. The first wireless apparatus of claim 23, further comprising:

means for identifying multiple clusters associated with a first PI beam pair of the first plurality of beams and a second PI beam pair of the first plurality of beams, wherein the beam sweep order for the second set of beam measurements comprises a first P2 beam sweep of the first PI beam pair to obtain a first P2 beam pair, followed by a first P3 beam sweep of the first P2 beam pair to obtain a first P3 beam pair, followed by a second P2 beam sweep of the second PI beam pair to obtain a second P2 beam pair, followed by a second P3 beam sweep of the second P2 beam pair to obtain a second P3 beam pair.

25. The first wireless apparatus of claim 23, further comprising:

means for identifying a single cluster associated with a first PI beam pair of the first plurality of beams and a second PI beam pair of the first plurality of beams, wherein the beam sweep order for the second set of beam measurements comprises a first P2 beam sweep of the first PI beam pair to obtain a first P2 beam pair, followed by a second P2 beam sweep of the second PI beam pair to obtain a second P2 beam pair, followed by a first P3 beam sweep of the first P2 beam pair to obtain a first P3 beam pair, followed by a second P3 beam sweep of the second P2 beam pair to obtain a second P3 beam pair.

26. The first wireless apparatus of claim 18, wherein the beam sweep order comprises at least one of:

a sequential beam sweep order; or

a non-sequential beam sweep order for the second plurality of beams.

27. A second wireless apparatus for wireless communication, comprising: means for transmitting a first plurality of beams over a wireless channel between the second wireless apparatus and a first wireless apparatus, each beam in the first plurality of beams having a first beam-width;

means for receiving, from the first wireless apparatus, a first beam measurement report for a first plurality of beams, the first beam measurement report indicating a beam sweep order for a second set of beam measurements for a second plurality of beams;

means for transmitting the second plurality of beams according to the indicated beam sweep order, each beam in the second plurality of beams having a second beam-width that is narrower than the first beam-width;

means for receiving a second beam measurement report from the first wireless apparatus based at least in part on the second plurality of beams; and

means for transmitting to the first wireless apparatus an indication of a beam selected for transmissions from the second wireless apparatus based at least in part on the first and second beam measurement reports.

28. The second wireless apparatus of claim 27, further comprising:

means for receiving, from the first wireless apparatus, an indication related to one or more clusters associated with the one or more of the beams of the second plurality of beams.

29. The second wireless apparatus of claim 28, further comprising:

means for selecting the beam sweep order based at least in part on the one or more clusters associated with the wireless channel.

30. The second wireless apparatus of claim 28, further comprising:

means for assigning a unique receive beam weighting factor to each of two or more receive radio frequency chains of the second wireless apparatus; and

means for identifying, based at least in part on reception with the unique receive beam weighting factor, a received signal strength for each receive radio frequency chain of the two or more receive radio frequency chains.