公开(公告)号：US20200053835A1

公开(公告)日：2020-02-13

申请号：US16535576

申请日：2019-08-08

Applicant: IDAC HOLDINGS, INC.

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

IPC: H04W92/18 ,  H04W72/04 ,  H04W72/14 ,  H04L1/00 ,  H04L1/18 ,  H04W76/27 ,  H04W76/11 ,  H04W28/02 ,  H04W4/40

Abstract: A method and apparatus for performing sidelink communications in a wireless transmit receive unit (WTRU) using Long Term Evolution (LTE) and New Radio (NR) technologies is described herein. A WTRU receives downlink control information (DCI) on a physical downlink control channel (PDCCH) from a gNodeB (gNB), wherein the DCI is associated with a cyclic redundancy check (CRC). The a determination is made as to whether the DCI is for an LTE or NR technology sidelink transmission. On a condition that the DCI is for NR technology, the WTRU determines which transmit modulation and coding scheme (MCS) table to apply based on the masking of at least some of the bits in the CRC. Then the WTRU transmits sidelink data on resources indicated by the DCI using the determined MCS table. The WTRU may also receive HARQ feedback on resources indicated by the DCI for HARQ feedback.

公开(公告)号：US20200037274A1

公开(公告)日：2020-01-30

申请号：US16337582

申请日：2017-09-28

Applicant: IDAC HOLDINGS, INC.

Inventor： Kyle Jung-Lin Pan ,  Chunxuan Ye ,  Robert L. Olesen ,  Fengjun Xi

IPC: H04W56/00 ,  H04W16/28 ,  H04W68/00 ,  H04B7/06 ,  H04W72/04

Abstract: An apparatus and method for synchronization between a WTRU and a gNB are disclosed. The WTRU may receive a multiple beam synchronization signal from the gNB during synchronization. For each beam received by the WTRU, of the multiple beam synchronization signal, the WTRU may compare a received energy of the beam against a first threshold. A multiple beam synchronization signal may include a first and second synchronization signal (SS). If one or more beams of the multiple beam synchronization signal meets or exceeds the first threshold, the WTRU may report an indication of pre-synchronization to the gNB. This pre-synchronization may indicate to the gNB that a WTRU exists in an area of a particular beam of the WTRU. In this way, a gNB may target the WTRU using transmissions directed towards the WTRU.

公开(公告)号：US20190238270A1

公开(公告)日：2019-08-01

申请号：US16336803

申请日：2017-09-28

Applicant: IDAC HOLDINGS, INC.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  Robert L. Olesen ,  Chunxuan Ye ,  Janet A. Stern-Berkowitz

IPC: H04L1/00 ,  H04B7/06 ,  H04W74/08 ,  H03M13/09

CPC classification number: H04L1/0067 ,  H03M13/09 ,  H04B7/0617 ,  H04B7/0623 ,  H04B7/0695 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/007 ,  H04L1/0072 ,  H04W48/10 ,  H04W74/0833

Abstract: A method for transmitting system information on a PBCH is described herein. A transmission/reception point (TRP) may generate a concatenated master information block (MIB) transport block that includes information bits associated with system bandwidth information, timing information, system frame number (SFN), a beam sweeping configuration, and a control resource set (CORESET). The TRP may then attach at least 16 cyclic redundancy check (CRC) bits to the concatenated MIB and then prioritize the concatenated MIB and the at least 16 CRC bits based on content. The TRP may then perform channel coding of the prioritized concatenated MIB and the at least 16 CRC bits to produce coded bits using at least one polar encoder with a coding rate that is less than ⅓, perform rate matching via repetition on the coded bits, and then transmit the rate matched, coded bits on the PBCH of a radio frame.

公开(公告)号：US20190222279A1

公开(公告)日：2019-07-18

申请号：US16336983

申请日：2017-09-28

Applicant: IDAC Holdings, Inc.

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

IPC: H04B7/06 ,  H04B7/024 ,  H04W72/04

CPC classification number: H04B7/063 ,  H04B7/024 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/0491 ,  H04B7/0617 ,  H04B7/0689 ,  H04B7/0695 ,  H04B7/088 ,  H04W72/00 ,  H04W72/042 ,  H04W72/046

Abstract: Systems, methods, and devices are disclosed for determining a beam modulation mode and/or a carrier modulation mode. A beamformed reference signal may be transmitted to a wireless transmit/receive unit (WTRU). A beam measurement report may be received from the WTRU. The beam measurement report may include a beam modulation mode recommendation and/or a carrier modulation mode recommendation. A beam modulation mode and/or a carrier modulation mode may be determined based on a mode recommendation. A beam modulation mode and/or a carrier modulation mode may indicate a manner of transmitting same information on multiple beams.

公开(公告)号：US20190207710A1

公开(公告)日：2019-07-04

申请号：US16324347

申请日：2017-08-10

Applicant: IDAC HOLDINGS, INC.

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

IPC: H04L1/00 ,  H03M13/11 ,  H04L1/18

CPC classification number: H04L1/0057 ,  H03M13/1102 ,  H03M13/116 ,  H03M13/13 ,  H03M13/6306 ,  H03M13/6393 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/0069 ,  H04L1/1812 ,  H04L1/1819 ,  H04L1/1867

Abstract: A method (2200) and apparatus for transmitting data using low density parity check, LDPC, encoding and hybrid automatic repeat request-incremental redundancy, HARQ-IR, is disclosed. The method may comprise selecting (2206) a protograph sub-matrix from a family of protograph matrices based on one or more of an initial code rate, an information block size, a maximum retransmission count or a maximum number of redundancy versions, wherein the selected protograph sub-matrix supports HARQ-IR. A parity check matrix may be determined based on the selected protograph sub-matrix (2208). One or more data blocks may be encoded using LDPC based on the parity check matrix (2218) and the LDPC encoded data block may be transmitted (2220) to an LDPC HARQ-IR configured receiver.

公开(公告)号：US20190199569A1

公开(公告)日：2019-06-27

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

CPC classification number: H04L27/2627 ,  H04L27/2605

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：US20190104549A1

公开(公告)日：2019-04-04

申请号：US15528029

申请日：2015-11-25

Applicant: IDAC HOLDINGS, INC.

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

IPC: H04W74/08 ,  H04W72/04 ,  H04B7/06 ,  H04L5/00 ,  H04W72/14 ,  H04W24/08 ,  H04W24/10 ,  H04L27/26

Abstract: Methods, devices and systems are provided for performing a random access (RA) procedure. A wireless transmit/receive unit (WTRU) may be configured to receive RA resource sets, where each of the RA resource sets is associated with a node-B directional beam, select an RA resource set from among the RA resource sets, and initiate an RA procedure based on the selected RA resource set. The RA procedure may include selecting multiple preambles which include a preamble for each resource of a plurality of resources corresponding to the selected RA resource set. The WTRU may be configured to sequentially transmit the selected multiple preambles in sequential RA transmissions, and may be configured to receive, from a node-B, in response to the RA transmissions, at least one RA response (RAR), where each of the received at least one RAR corresponds to one of the transmitted multiple preambles.

公开(公告)号：US20180375707A1

公开(公告)日：2018-12-27

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: H04L27/26

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：US11683125B2

公开(公告)日：2023-06-20

申请号：US17746795

申请日：2022-05-17

Applicant: IDAC Holdings, Inc.

Inventor： Chunxuan Ye ,  Fengjun Xi ,  Sungkwon Hong ,  Kyle Jung-Lin Pan ,  Robert L. Olesen

IPC: H04L1/00 ,  H03M13/00 ,  H03M13/05 ,  H03M13/27 ,  H03M13/29 ,  H03M13/13

CPC classification number: H04L1/0071 ,  H03M13/05 ,  H03M13/13 ,  H03M13/27 ,  H03M13/2778 ,  H03M13/2792 ,  H03M13/2906 ,  H03M13/618 ,  H03M13/6306 ,  H03M13/6356 ,  H03M13/6362 ,  H03M13/6368 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0067

Abstract: Systems, methods, and instrumentalities are disclosed for interleaving coded bits. A wireless transmit/receive unit (WTRU) may generate a plurality of polar encoded bits using polar encoding. The WTRU may divide the plurality of polar encoded bits into sub-blocks of equal size in a sequential manner. The WTRU may apply sub-block wise interleaving to the sub-blocks using an interleaver pattern. The sub-blocks associated with a subset of the sub-blocks may be interleaved, and sub-blocks associated with another subset of the sub-blocks may not be interleaved. The sub-block wise interleaving may include applying interleaving across the sub-blocks without interleaving bits associated with each of the sub-blocks. The WTRU may concatenate bits from each of the interleaved sub-blocks to generate interleaved bits, and store the interleaved bits associated with the interleaved sub-blocks in a circular buffer. The WTRU may select a plurality of bits for transmission from the interleaved bits.

公开(公告)号：US11595953B2

公开(公告)日：2023-02-28

申请号：US17073146

申请日：2020-10-16

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 ,  H04W72/044

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.