公开(公告)号：US10608858B2

公开(公告)日：2020-03-31

申请号：US16292991

申请日：2019-03-05

Applicant: IDAC HOLDINGS, INC.

Inventor： Erdem Bala ,  Mihaela C. Beluri ,  Kyle Jung-Lin Pan ,  Tao Deng ,  Liangping Ma ,  Yugeswar Deenoo ,  Ravikumar V. Pragada ,  Alphan Sahin

IPC: H04L27/26

Abstract: Methods and systems for operation in a wireless network are provided, the methods including receiving modulated data symbols and zeros in a frequency-domain, and mapping in the frequency-domain the modulated data symbols and zeros in an interleaved manner to sub-carriers within a resource allocation. The methods and systems further include generating a time-domain data signal based on the mapped sub-carriers, and generating a time domain cancellation signal by sign inverting and repeating a predetermined number of time-domain samples at a tail portion of the data signal. The methods and systems further include combining the time-domain data signal and the time domain cancellation signal to generate an exact zero tail data signal such that the exact zero tail data signal has a zero tail length equal to the predetermined number of time-domain samples, and transmitting the exact zero tail data signal.

公开(公告)号：US20200053781A1

公开(公告)日：2020-02-13

申请号：US16534550

申请日：2019-08-07

Applicant: IDAC HOLDINGS, INC.

Inventor： Kyle Jung-Lin Pan ,  Nirav B. Shah ,  Fengjun Xi ,  Chunxuan Ye

IPC: H04W74/08 ,  H04W72/00 ,  H04J11/00 ,  H04W56/00

Abstract: Methods, systems, and apparatuses for use in wireless communication are disclosed. A method of communication on an unlicensed band may include detecting a Synchronization Signal/Physical Broadcast Channel (SS/PBCH) block comprising a demodulation references signal (DMRS), a synchronization signal (SS), and a PBCH payload. A SS/PBCH block index may be obtained from one of the DMRS and the PBCH payload. A cyclic rotation indicator may be obtained from the SS/PBCH block (e.g., from the DMRS, the SS, and/or the PBCH payload). A determination may be made that the cyclic rotation indicator indicates an on state and a time gap may be obtained from one of the DMRS and the PBCH payload, based on the determination. Frame timing may be determined based on the cyclic rotation indicator, the SS/PBCH block index, and the time gap.

公开(公告)号：US20200053772A1

公开(公告)日：2020-02-13

申请号：US16535140

申请日：2019-08-08

Applicant: IDAC Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  HaoHao Qin ,  Chunxuan Ye

IPC: H04W74/00 ,  H04W48/10 ,  H04W56/00 ,  H04W74/08 ,  H04B17/327

Abstract: Systems, methods, and instrumentalities are disclosed herein associated with physical random access, e.g., for new radio (NR) implementations such as NR-unlicensed (NR-U). A wireless transmit/receive unit (WTRU) may switch a position of a PRACH occasion (RO) with another RO to reduce latency (e.g., so that a WTRU can transmit a preamble without performing a LBT operation). Systems, methods, and instrumentalities are disclosed for reserving a listen-before-talk (LBT) procedure gap at the beginning of a random access channel (RACH) occasion (RO) in New Radio (NR) unlicensed (NR-U) systems. The present systems, methods, and instrumentalities may (e.g., may also) be applied to consecutive ROs. This may include reserving a LBT gap for example, for a RO transmission (e.g., for each of the consecutive ROs). Low latency RACH for NR-U systems may be supported (e.g., mapping rules for the RO may be implemented).

公开(公告)号：US20190393987A1

公开(公告)日：2019-12-26

申请号：US16482025

申请日：2018-02-01

Applicant: IDAC Holdings, Inc.

Inventor： Sungkwon Hong ,  Chunxuan Ye ,  Kyle Jung-Lin Pan ,  Fengjun Xi

IPC: H04L1/00

Abstract: Systems, methods, and instrumentalities may be provided for an infrastructure node to transmit and a wireless transmit/receive unit (WTRU) or a group of WTRUs to receive a first downlink control information (DCI) a second DCI. The first DCI may carry time critical DCI, whereas the second DCI may carry non-time critical DCI. Each of the first DCI and the second DCI may be polar encoded. The second DCI may be polar encoded may be received with an embedded first DCI as part of frozen bits. The second DCI may be mapped to a plurality of bit channels having higher reliability than the plurality of bit channels to which the embedded first DCI is mapped. The WTRU may discard the decoded first DCI, if decoding of the DCI using the embedded first DCI is not successful.

公开(公告)号：US10419085B2

公开(公告)日：2019-09-17

申请号：US16099965

申请日：2017-05-09

Applicant: IDAC Holdings, Inc.

Inventor： Steven Ferrante ,  Robert L Olesen ,  Kyle Jung-Lin Pan ,  Fengjun Xi ,  Hanqing Lou

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/08 ,  H04B7/0417 ,  H04L25/02

Abstract: Methods are described for performing joint coded spatial and/or antenna based modulation. A first device may receive, from a second device, one or more pilot signals associated with one or more transmit antennas, antenna patterns, and/or antenna polarizations. The first device may determine channel related information associated with an antenna pair based on the pilot signals. The channel related information may include one or more channel cross correlation coefficients. The first device may determine a set-partition, for example, based on the channel related information. The first device may configure a dynamically configurable Trellis Coded Modulation (TCM) decoder based on the determined set-partition.

公开(公告)号：US20190165890A1

公开(公告)日：2019-05-30

申请号：US16315234

申请日：2017-07-01

Applicant: IDAC Holdings, Inc.

Inventor： Philip J. Pietraski ,  Arnab Roy ,  Kyle Jung-Lin Pan ,  Alpaslan Demir ,  Muhammad U. Fazili ,  William E. Lawton ,  Mohamed Abou El Seoud ,  Kevin T. Wanuga ,  Ravikumar V. Pragada

IPC: H04L1/00 ,  H04B7/06 ,  H04L5/00 ,  H04W80/02 ,  H03M13/11 ,  H04L27/26

Abstract: Latency reduction by fast forward (FF) in multi-hop communication device and/or systems is disclosed. Packets may be received and forwarded using a codeword (CW)-based approach with and/or without per-CW CRC. A FF session may have a flow ID and packets may have sequence numbers. Packets targeted for FF may be divided into independently decodable CWs that may be transmitted in the next hop, for example, as soon as the destination is determined without waiting for an entire packet's arrival and/or for CRC verification. Low latency (e.g. FF) traffic may be indicated. CW-based FF may be extensible for an e2e RAN path from a WTRU to the last access node in a RAN. Intermediate metrics, a packet CRC and/or a per-CW CRC may be utilized for data integrity. HARQ and/or CW retransmission procedures may be implemented between network nodes for error handling.

公开(公告)号：US10284407B2

公开(公告)日：2019-05-07

申请号：US15777761

申请日：2016-11-30

Applicant: IDAC HOLDINGS, INC.

Inventor： Erdem Bala ,  Mihaela C. Beluri ,  Kyle Jung-Lin Pan ,  Tao Deng ,  Liangping Ma ,  Yugeswar Deenoo ,  Ravikumar V. Pragada ,  Alphan Sahin

IPC: H04L27/30 ,  H04L27/26

Abstract: Methods and systems for operation in a wireless network are provided, the method including receiving modulated data symbols and zeros in a frequency-domain, and mapping in the frequency-domain the modulated data symbols and zeros in an interleaved manner to sub-carriers within a resource allocation. The method further includes generating a time-domain data signal based on the mapped sub-carriers, and generating a time domain cancellation signal by sign inverting and repeating a predetermined number of time-domain samples at a tail portion of the data signal. The method further includes combining the time-domain data signal and the time domain cancellation signal to generate an exact zero tail data signal such that the exact zero tail data signal has a zero tail length equal to the predetermined number of time-domain samples, and transmitting the exact zero tail data signal.

公开(公告)号：US20180310283A1

公开(公告)日：2018-10-25

申请号：US15775028

申请日：2016-11-10

Applicant: IDAC HOLDINGS, INC.

Inventor： Yugeswar Deenoo ,  Tao Deng ,  Kyle Jung-Lin Pan ,  Moon-il Lee ,  Ravikumar V. Pragada ,  Janet A. Stern-Berkowitz ,  Mihaela C. Beluri

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0069 ,  H04W72/046

Abstract: Transmit and/or receive beamforming may be applied to the control channel transmission/reception, e.g., in mmW access link system design. Techniques to identify candidate control channel beams and/or their location in the subframe structure may provide for efficient WTRU operation. A framework for beam formed control channel design may support varying capabilities of mBs and/or WTRUs, and/or may support time and/or spatial domain multiplexing of control channel beams. For a multi-beam system, modifications to reference signal design may discover, identify, measure, and/or decode a control channel beam. Techniques may mitigate inter-beam interference. WTRU monitoring may consider beam search space, perhaps in addition to time and/or frequency search space. Enhancements to downlink control channel may support scheduling narrow data beams. Scheduling techniques may achieve high resource utilization, e.g., perhaps when large bandwidths are available and/or WTRUs may be spatially distributed.

公开(公告)号：US11575467B2

公开(公告)日：2023-02-07

申请号：US16763599

申请日：2018-11-12

Applicant: IDAC Holdings, Inc.

Inventor： Chunxuan Ye ,  Fengjun Xi ,  Kyle Jung-Lin Pan

IPC: H04L1/00 ,  H04L1/1812 ,  H04L1/1867 ,  H04L69/00

Abstract: Systems, procedures, and instrumentalities are disclosed for transmissions with polar codes. A transmitting entity may determine a mother code length. The mother code length may be based on value(s), e.g., a maximum number of transmissions. The transmitting entity may determine a number of information bits to be polar encoded. The number of information bits may be larger than a number of payload bits. The transmitting entity may map the number of information bits to a number of bit channels of a polar code. The transmitting entity may polar encode the information bits in the bit channels using the determined mother code length. The transmitting entity may partition the polar encoded bits into a number of parts. The number of parts may be based on one or more values, e.g., the maximum number of transmissions. The transmitting entity may transmit bits that have been interleaved to a circular buffer.

公开(公告)号：US11528069B2

公开(公告)日：2022-12-13

申请号：US16322875

申请日：2017-08-10

Applicant: IDAC Holdings, Inc.

Inventor： Moon-il Lee ,  Oghenekome Oteri ,  Afshin Haghighat ,  Erdem Bala ,  Liangping Ma ,  Kyle Jung-Lin Pan ,  Robert L. Olesen ,  Loic Canonne-Velasquez

IPC: H04J1/16 ,  H04L1/00 ,  H04L12/16 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04

Abstract: Embodiments described herein provide systems and methods for reference signal configuration for multiple panels with panel-specific channel state information reference signals (CSI-RS) configurations and quasi-collocation (QCL) indication, including QCL type definition and indication for panel-specific CSI-RS configurations. Exemplary embodiments further provide multi-component precoder structure with panel specific component precoder and panel common precoder. Embodiments include: (semi)-open-loop schemes using random precoding for panel common precoder and/or panel specific precoder; panel selection/restriction with panel common precoder; MU-MIMO operation using different set of panels; and panel-wise CSI reporting.