公开(公告)号：US11502740B2

公开(公告)日：2022-11-15

申请号：US17269396

申请日：2019-08-12

Applicant: Sony Corporation

Inventor： Olof Zander ,  Rickard Ljung ,  Erik Bengtsson ,  Fredrik Rusek

IPC: H04B7/10 ,  H04W74/08

Abstract: A method for performing a listen-before-talk procedure in a first transceiver device (N1) for wireless electromagnetic communication in a frequency band (150) is disclosed. A first transceiver device (N1) configured to perform the method is also disclosed. The method comprises receiving at the first transceiver device (N1) a stream of data (11) from a second transceiver device (N2), and determining whether the second transceiver device (N2) is capable of receiving in only a single or in two polarization directions. If the second transceiver device (N2) is capable of receiving in two polarization directions, then the method comprises determining and using an energy threshold that is larger than a regulated energy threshold for listen-before-talk within the frequency band (150). If the second transceiver device (N2) is capable of receiving in only a single polarization direction or if the energy of the received stream of data (11) is smaller than the energy threshold, then constructing a signal to be transmitted within the frequency band (150) by the first transceiver device (N1).

公开(公告)号：US11502732B2

公开(公告)日：2022-11-15

申请号：US17278314

申请日：2019-10-10

Applicant: Sony Corporation

Inventor： Erik Bengtsson ,  Thomas Bolin ,  Olof Zander ,  Fredrik Rusek ,  Kun Zhao ,  Zuleita Ho

IPC: H04B7/0456 ,  H04B7/06

Abstract: A method includes receiving (402) a plurality of reference signals (301-303) at an antenna port of a communication device (101). Each reference signal (301-303) is sent using a corresponding precoder. The precoder is selected from a first set of precoders. The method further includes determining (403) a channel estimate based on the received plurality of reference signals (301-303), and selecting (404) a precoder from a second set of precoders based on the determined channel estimate. The second set of precoders comprises at least one precoder in addition to the precoders of the first set of precoders. The method includes sending (405) an indication (304) relating to the selected precoder.