公开(公告)号：US20200374040A1

公开(公告)日：2020-11-26

申请号：US16764317

申请日：2018-11-14

Applicant: IDAC Holdings, Inc.

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

IPC: H04L1/16 ,  H04L1/18 ,  H04L5/00

Abstract: Methods, apparatus, systems, architectures and interfaces for compressing hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback bits performed by a wireless transmit/receive unit (WTRU) receiving a transmit block (TB) including code block group (CBG) data are provided. The method includes receiving, by the WTRU, information associated with transmitting compressed HARQ-ACK feedback information, receiving, by the WTRU, a TB; determining, by the WTRU, a countdown downlink assignment index (CD_DAI) associated with the received TB; generating, by the WTRU, the compressed HARQ-ACK feedback information by compressing HARQ-ACK feedback bits associated with the received TB; and on condition that: (1) the CD_DAI is equal to zero or (2) the WTRU determines to provide feedback information, transmitting the compressed HARQ-ACK feedback information.

公开(公告)号：US10790934B2

公开(公告)日：2020-09-29

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 ,  H03M13/00 ,  H04L1/18 ,  H03M13/13

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：US20200100298A1

公开(公告)日：2020-03-26

申请号：US16583792

申请日：2019-09-26

Applicant: IDAC Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi

IPC: H04W74/08 ,  H04W72/04 ,  H04W76/27 ,  H04W56/00

Abstract: In an integrated access and backhaul (IAB) system, an access WTRU may receive a random access channel (RACH) occasion (RO) configuration comprising one or more RO resources from a first integrated access backhaul (IAB) node. The access WTRU may receive an indication that one or more of the configured RO resources have an overlap with one or more IAB node RO resources. The access WTRU may monitor and receive the ROI indicating the configured RO resources that overlap with the one or more IAB node RO resources. Based on the received ROI and the configured RO resources, the access WTRU may determine one or more RO resources available for PRACH transmission. The access WTRU may select an RO resource from the available RO resources for PRACH transmission. The access WTRU may send a first PRACH transmission to the first IAB node using the selected RO resource.

公开(公告)号：US20200100197A1

公开(公告)日：2020-03-26

申请号：US16583314

申请日：2019-09-26

Applicant: IDAC Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi

IPC: H04W56/00 ,  H04W72/00 ,  H04W72/04 ,  H04W24/08

Abstract: Systems, methods, and instrumentalities are described herein that may be associated with SS block (SSB) timing acquisition (e.g., for new radio unlicensed (NR-U) operations). A wireless transmit receive unit (WTRU) may detect/decode an SSB. The WTRU decoding the SSB may include the WTRU decoding a PBCH payload. The PBCH payload may be scrambled with a first scrambling code, channel coded, and scrambled with a second scrambling code. The WTRU may acquire information associated with the SSB that includes one or more of: a transmission occasion time index, a block time index, or a time offset. The WTRU may use one or more of the acquired parameters to determine a timing associated with the SSB.

公开(公告)号：US20200099471A1

公开(公告)日：2020-03-26

申请号：US16494666

申请日：2018-03-21

Applicant: IDAC Holdings, Inc.

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

IPC: H04L1/00

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：US20200059290A1

公开(公告)日：2020-02-20

申请号：US16347065

申请日：2017-11-02

Applicant: IDAC Holdings, Inc.

Inventor： Kyle Jung-Lin Pan ,  Fengjun Xi ,  Afshin Haghighat ,  Oghenekome Oteri ,  Chunxuan Ye ,  Frank La Sita ,  Robert L. Olesen ,  Moon-il Lee

IPC: H04B7/08 ,  H04B7/06 ,  H04B17/327 ,  H04W24/10

Abstract: A WTRU may include a memory and a processor. The processor may be configured to receive beam grouping information from a gNB or transmission and reception point (TRP). The beam grouping information may indicate a group of beams that the WTRU may report using group-based reporting. The group-based reporting may be a reduced level of reporting compared to a beam-based reporting. The group-based report may include measurement information for a representative beam. The representative beam may be one of the beams in the group or represents an average of the beams in the group. Alternatively, the representative beam may be a beam that has a maximum measurement value compared to other beams in the group. The group-based report may include a reference signal received power (RSRP) for the representative beam and a differential RSRP for each additional beam in the beam group.

公开(公告)号：US20200053800A1

公开(公告)日：2020-02-13

申请号：US16582305

申请日：2019-09-25

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

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：US20190190655A1

公开(公告)日：2019-06-20

申请号：US16322055

申请日：2017-08-10

Applicant: IDAC Holdings, Inc.

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

IPC: H04L1/00 ,  H03M13/13 ,  H03M13/35 ,  H03M13/09

CPC classification number: H04L1/0061 ,  H03M13/09 ,  H03M13/13 ,  H03M13/356 ,  H04B7/0486 ,  H04B7/0623 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0639 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0072 ,  H04L1/0088

Abstract: Systems, methods, and instrumentalities are disclosed for priority-based channel coding for control information. A wireless transmit/receive unit (WTRU) may sort control information associated with a first control information type into a first control information group and the control information associated with a second control information type into a second control information group, for example, based on respective priorities associated with the first and second control information types. The WTRU may group one or more bits of the first control information group into a first bit level control information group and a second bit level control information group based on priority. The WTRU may selectively apply a cyclic redundancy check (CRC) to the first control information group, the second control information group, the first bit level control information group, and/or the second bit level control information group.

公开(公告)号：US20190181983A1

公开(公告)日：2019-06-13

申请号：US16324276

申请日：2017-08-10

Applicant: IDAC Holdings, Inc.

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

IPC: H04L1/00

Abstract: Systems, methods, and instrumentalities may be disclosed for polar coding. For example, a wireless transmit/receive unit (WTRU) may identify a coding rate and/or an information block length. The WTRU may determine a codeword length, for example, based on the coding rate and/or the information block length. The WTRU may identify a channel condition and/or decoding error statistics. The WTRU may determine a polar code construction type, for example, based on the channel condition and/or the decoding error statistics. The WTRU may determine a design signal to noise ratio (SNR) based on the channel condition and/or the decoding error statistics. The WTRU may determine a polar code based on the information block length, the codeword length, the polar code construction type, and/or the design SNR. The WTRU may encode source bits based on the polar code.

公开(公告)号：US20190181928A1

公开(公告)日：2019-06-13

申请号：US16324443

申请日：2017-08-10

Applicant: IDAC Holdings, Inc.

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

IPC: H04B7/0456 ,  H04B7/0417 ,  H04L27/36

Abstract: Digital and hybrid spatial modulation are disclosed. A transmitting entity may be configured to perform digital or hybrid spatial modulation. In case of a digital spatial modulation, a transmitting entity may split a plurality of encoded data bits into amplitude phase modulation (APM) bits and virtual antenna index bits. The transmitting entity may modulate the APM bits into modulated data symbols. The transmitting entity may determine a virtual antenna port based on the split virtual antenna index bits and one precoding vector of a set of precoding vectors. The transmitting entity may map the modulated data symbols to a transmission layer based on the virtual antenna port. The transmitting entity may transmit the mapped modulated data symbols. In case of hybrid spatial modulation, the encoded data may be split into physical antenna index bits, and the mapped modulated data symbols may be transmitted via the physical antenna port.