公开(公告)号：US20220368383A1

公开(公告)日：2022-11-17

申请号：US17811494

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：US11444645B2

公开(公告)日：2022-09-13

申请号：US16958813

申请日：2018-01-02

Applicant: APPLE INC.

Inventor： Oner Orhan ,  Hosein Nikopour ,  Peter Sagazio ,  Farhana Sheikh ,  Junyoung Nam ,  Shilpa Talwar

IPC: H04B1/16

Abstract: A receiver circuit associated with a communication device is disclosed. The receiver circuit comprises a digital data compression circuit configured to receive a plurality of digital receive signals derived from a plurality of analog receive signals respectively associated with the receiver circuit. The digital data compression circuit is further configured to compress the plurality of digital receive signals to form one or more compressed digital data signals based thereon, to be provided to an input output (I/O) interface associated therewith. In some embodiments, a compressed digital signal dimension associated with the one or more compressed digital data signals is less than a digital signal dimension associated with the plurality of digital receive signals.

公开(公告)号：US11349539B2

公开(公告)日：2022-05-31

申请号：US17052678

申请日：2018-06-29

Applicant: Apple Inc.

Inventor： Oner Orhan ,  Brent Elliott ,  Hosein Nikopour ,  Eren Sasoglu ,  Shilpa Talwar

IPC: H04B7/06 ,  H04B1/44 ,  H04B7/0456

Abstract: An apparatus, method and computer readable medium for special thermal density reduction by antenna thinning. A system comprises N transmit/receive (TX/RX) chains, where each TX/RX chain comprises an RFFE and each RFFE comprises one or more thermal sensors configured to measure heat in the RFFE. An antenna array coupled to the plurality of TX/RX chains. A codebook that comprises a plurality of code words configured to respond to real-time heat measurements from the thermal sensors in each TX/RX chain is configured to switch off selected TX/RX chains to reduce thermal density at the antenna array while maintaining M RFFEs switched on, where M

公开(公告)号：US10411783B2

公开(公告)日：2019-09-10

申请号：US15797138

申请日：2017-10-30

Applicant: APPLE INC.

Inventor： Mahmoud Taherzadehboroujeni ,  Hosein Nikopour ,  Amir Khandani ,  Wen Tong ,  Ming Jia ,  Peiying Zhu ,  Dong-Sheng Yu ,  Jianglei Ma

IPC: H04B7/0413 ,  H04L27/26 ,  H04B7/06 ,  H04L1/06 ,  H04B7/08 ,  H04L5/00

Abstract: Methods and devices are provided for MIMO OFDM transmitter and receivers having odd and/even numbers of transmit antennas. Various methods for pre-coding information bits before space time coding (STC) are described for enabling transmission of information bits over all antennas. Methods of decoding received signals that have been pre-coded and STC coded are also provided by embodiments of the invention. Pilot patterns for downlink and uplink transmission between a base station and one or more wireless terminals for three transmit antenna transmitters are also provided. Variable rate codes are provided that combine various fixed rate codes in a manner that results in codes whose rates are dependent on all the various fixed rate codes that are combined.

公开(公告)号：US10340990B2

公开(公告)日：2019-07-02

申请号：US16049080

申请日：2018-07-30

Applicant: Apple Inc.

Inventor： Wen Tong ,  Hosein Nikopour ,  Amir Khandani ,  Hua Xu ,  Ming Jia ,  Peiying Zhu ,  Dong-sheng Yu

IPC: H04B7/04 ,  H04B7/0456 ,  H04B7/0417 ,  H04B7/06 ,  H04L29/06

Abstract: A codebook C is provided in a MIMO transmitter as well as a MIMO receiver. The codebook C will include M codewords ci, where i is a unique codeword index for each codeword ci. Each codeword defines weighting factors to apply to the MIMO signals, and may correspond to channel matrices or vectors to apply to the MIMO signals prior to transmission from the respective antennas of the MIMO transmitter. The present invention creates codeword subsets Si for each codeword ci of the codebook C. Each codeword subset Si defines L codewords cj, which are selected from all the codewords ci in the codebook C. The codewords cj in a codeword subset Si are the L codewords in the entire codebook that best correlate with the corresponding codeword ci.

公开(公告)号：US10038485B2

公开(公告)日：2018-07-31

申请号：US15852585

申请日：2017-12-22

Applicant: Apple Inc.

Inventor： Wen Tong ,  Hosein Nikopour ,  Amir Khandani ,  Hua Xu ,  Ming Jia ,  Peiying Zhu ,  Dong-sheng Yu

IPC: H04B7/04 ,  H04B7/0456 ,  H04L29/06 ,  H04B7/06 ,  H04B7/0417

CPC classification number: H04B7/0478 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0634 ,  H04B7/0639 ,  H04L69/04 ,  H04L69/14

Abstract: A codebook C is provided in a MIMO transmitter as well as a MIMO receiver. The codebook C will include M codewords ci, where i is a unique codeword index for each codeword ci. Each codeword defines weighting factors to apply to the MIMO signals, and may correspond to channel matrices or vectors to apply to the MIMO signals prior to transmission from the respective antennas of the MIMO transmitter. The present invention creates codeword subsets Si for each codeword ci of the codebook C. Each codeword subset Si defines L codewords cj, which are selected from all the codewords ci in the codebook C. The codewords cj in a codeword subset Si are the L codewords in the entire codebook that best correlate with the corresponding codeword ci.

公开(公告)号：US20160294458A1

公开(公告)日：2016-10-06

申请号：US15175246

申请日：2016-06-07

Applicant: Apple Inc.

Inventor： Wen Tong ,  Hosein Nikopour ,  Amir Khandani ,  Hua Xu ,  Ming Jia ,  Peiying Zhu ,  Dong-sheng Yu

IPC: H04B7/04

CPC classification number: H04B7/0478 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/0634 ,  H04B7/0639 ,  H04L69/04 ,  H04L69/14

Abstract: A codebook C is provided in a MIMO transmitter as well as a MIMO receiver. The codebook C will include M codewords ci, where i is a unique codeword index for each codeword ci. Each codeword defines weighting factors to apply to the MIMO signals, and may correspond to channel matrices or vectors to apply to the MIMO signals prior to transmission from the respective antennas of the MIMO transmitter. The present invention creates codeword subsets Si for each codeword ci of the codebook C. Each codeword subset Si defines L codewords cj, which are selected from all the codewords ci in the codebook C. The codewords cj in a codeword subset Si are the L codewords in the entire codebook that best correlate with the corresponding codeword ci.

Abstract translation: 码本C被提供在MIMO发射机以及MIMO接收机中。 码本C将包括M个码字ci，其中i是每个码字ci的唯一码字索引。 每个码字定义了应用于MIMO信号的加权因子，并且可以对应于在从MIMO发射机的各个天线发送之前应用于MIMO信号的信道矩阵或向量。 本发明为码本C的每个码字ci创建码字子集Si。每个码字子集Si定义了从码本C中的所有码字ci中选择的L个码字cj。码字子集Si中的码字cj是L个码字 在整个码本中与相应的码字ci最相关。