公开(公告)号：US20210234574A1

公开(公告)日：2021-07-29

申请号：US17258541

申请日：2018-08-30

Applicant: Nokia Technologies Oy

Inventor： Xiaomao Mao

IPC: H04B7/0426 ,  H04B7/0417 ,  H04B7/06

Abstract: In accordance with some embodiments, an apparatus may include means for determining time and frequency domain correlation of at least one channel with respect to direction of at least one dominant Eigen beam. The apparatus may further include means for applying at least one common channel hardening matrix within the correlation time and bandwidth based on a first time periodicity. The apparatus may further include means for applying a 2-dimensional associated with the at least one common channel hardening matrix. The apparatus may further include means for reporting at least one tap location based on a second time periodicity that is associated with the at least one common channel hardening matrix to at least one network entity.

公开(公告)号：US11057095B2

公开(公告)日：2021-07-06

申请号：US16611614

申请日：2018-05-08

Applicant: Nokia Technologies Oy

Inventor： Frederick Vook ,  William Hillery ,  Mihai Enescu ,  Eugene Visotsky ,  Xiaomao Mao ,  Nitin Mangalvedhe

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0456

Abstract: Various communication system may benefit from the appropriate selection of communication parameters. For example, certain wireless communication systems may benefit from the user of a low-overhead high-rank codebook. A method can include determining a first partition of a precoding matrix with a higher resolution and a second partition of the precoding matrix with a lower resolution. The method can also include feeding back the first partition and the second partition.