公开(公告)号：US20220368382A1

公开(公告)日：2022-11-17

申请号：US17811484

申请日：2022-07-08

Applicant: APPLE INC.

Inventor： Jan Schreck ,  Nageen Himayat ,  Hosein Nikopour ,  Feng Xue ,  Ehsan Aryafar ,  Oner Orhan ,  Mustafa R. Akdeniz ,  Wook Bong Lee ,  Jing Zhu

IPC: H04B7/0456 ,  H04B7/0417 ,  H04B7/06 ,  H04L5/00 ,  H04W72/12

Abstract: Apparatuses of a user equipment (UE), a cellular base station, and radio access network (RAN) nodes are disclosed. An apparatus of a wireless communication device includes circuitry configured to measure reference signals received from a plurality of antennas of an other wireless communication device, and circuitry configured to cause one or more antennas of the wireless communication device to transmit information regarding the received reference signals back to the other wireless communication device to enable the other wireless communication device to estimate a utility function for different transmit parameter sets.

公开(公告)号：US11419124B2

公开(公告)日：2022-08-16

申请号：US16086490

申请日：2016-04-25

Applicant: Apple Inc.

Inventor： Shu-Ping Yeh ,  Jingwen Bai ,  Sung-En Chiu ,  Ping Wang ,  Feng Xue ,  Yang-Seok Choi ,  Shilpa Talwar

IPC: H04W72/08 ,  H04L5/00 ,  H04L5/14

Abstract: Devices and methods of providing joint scheduling in a full-duplex LTE system are generally described. The UE measures intra-cell interference at the UE caused by a UL transmission from each intra-cell UE, calculates a ratio of the intra-cell interference over an average inter-cell interference, determines whether the intra-cell UE is an aggressor or non-aggressor based on whether the ratio exceeds a threshold, transmits at least some of the determinations to the eNB as feedback, and communicates with the eNB based on a schedule that is dependent on the feedback such that the UE is neither an aggressor nor is subject to interference from aggressors. The schedule may also be based on wideband CQI feedback based on a ratio of an average overall DL interference plus noise over the average inter-cell interference plus noise and/or subband CQI feedback based on SINR measurements.

公开(公告)号：US20200187206A1

公开(公告)日：2020-06-11

申请号：US16789031

申请日：2020-02-12

Applicant: Apple Inc.

Inventor： Feng Xue ,  Qinghua Li

IPC: H04W72/04 ,  H04L5/14 ,  H04J11/00 ,  H04B7/024 ,  H04W68/04 ,  H04W36/02 ,  H04W74/08 ,  H04W74/00 ,  H04L12/18 ,  H04W48/16 ,  H04W8/00 ,  H04W16/14 ,  H04W88/02 ,  H04L25/03 ,  H04L25/02 ,  H04W72/02 ,  H04W56/00 ,  H04B7/06 ,  H04B7/0452 ,  H04W24/10 ,  H04W76/30 ,  H04W76/19 ,  H04W76/10

Abstract: A method for selecting at least one parameter for downlink data transmission with a mobile user equipment. The method is executable by a wireless communication base station having multiple antennas configured to communicate wirelessly with the mobile user equipment. The method receives an uplink probing signal from the mobile user equipment. The method determines a plurality of angles of arrival for a corresponding plurality of paths between the mobile user equipment and the multiple antennas. The method transmits a plurality of downlink probing signals directionally toward corresponding angles of arrival in the plurality of angles of arrival. Each downlink probing signal is a virtual antenna port with respect to the mobile user equipment. The method receives channel state information. The method composes at least one of a rank indicator (RI), precoding matrix indicator (PMI), or modulating and coding scheme (MCS) for downlink data transmission to the mobile user equipment.