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：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：US20220303964A1

公开(公告)日：2022-09-22

申请号：US17679779

申请日：2022-02-24

Applicant: IDAC HOLDINGS, INC.

Inventor： Kyle Jung-Lin Pan ,  Janet A. Stern-Berkowitz ,  Moon-il Lee ,  Fengjun Xi

IPC: H04W72/04 ,  H04W16/28 ,  H04W56/00 ,  H04W72/00

Abstract: A wireless transmit/receive unit (WTRU) may receive, from a base station, a synchronization signal/physical broadcast channel (SS/PBCH) block transmission. The WTRU may transmit using a physical random access channel (PRACH) resource. Further, the PRACH resource may be determined based on an SS/PBCH block index. Also, the SS/PBCH block index may be determined based on information associated with the SS/PBCH block transmission. In a further example, the information associated with the PBCH block may be derived from a demodulation reference signal (DMRS) sequence. In another example, the DMRS sequence may be a PBCH DMRS sequence. Also, the information associated with the PBCH block may be derived from PBCH payload bits. Further, the SS/PBCH block index may be associated with a beam. In addition, SS/PBCH transmissions of different beams may be transmitted at different times. Further, the PRACH resource may include a preamble resource, a time resource and a frequency resource.

公开(公告)号：US11431441B2

公开(公告)日：2022-08-30

申请号：US16322055

申请日：2017-08-10

Applicant: IDAC Holdings, Inc.

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

IPC: H04W4/00 ,  H04L1/00 ,  H03M13/35 ,  H03M13/13 ,  H03M13/09 ,  H04B7/0456 ,  H04B7/06

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：US20220124679A1

公开(公告)日：2022-04-21

申请号：US17421891

申请日：2020-01-09

Applicant: IDAC HOLDINGS, INC.

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

IPC: H04W72/02 ,  H04W72/08 ,  H04W72/10 ,  H04W72/04 ,  H04W24/10 ,  H04B17/318

Abstract: Methods, devices, and systems for resource allocation are disclosed herein. Specifically, a wireless transmit receive unit (WTRU) may measure a reference signal received power (RSRP) level and a received signal strength indicator (RSSI) value of one or more resources in each of a plurality of patterns. The WTRU may exclude, from the selection, each pattern for which at least one resource in the pattern is reserved by another WTRU and has an RSRP greater than a threshold. On a condition that at least one of the plurality of patterns is not excluded, the WTRU may select a pattern with a lowest pattern RSSI value and a one or more resources satisfying a quality of service (QoS) requirement of data of the WTRU. The WTRU may then transmit the data of the WTRU using the selected pattern.

公开(公告)号：US11251908B2

公开(公告)日：2022-02-15

申请号：US16473552

申请日：2018-01-05

Applicant: IDAC Holdings, Inc.

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

IPC: H04L1/18 ,  H04L1/00

Abstract: Systems, methods, and instrumentalities are disclosed for advanced coding on retransmission of data and/control information. The systems methods, and instrumentalities may include one or more of the following: chase combining for retransmission; incremental redundancy (IR) hybrid automatic repeat request (IR-HARQ); or incremental freezing (IF) HARQ. IF-HARQ may use lower coding rates and/or increased mother codeword length. IF-HARQ for retransmission with joint encoding and transmission of failed data and/or control message(s) (e.g., new control message(s)) may be used. This may include one or more of the following: increased priority for retransmission data and mapping retransmitted data to more reliable bit channels; or allocating more PC frozen bits for retransmitted data. A HARQ decision may be provided. For example, a decision may be made between the use of chase combining (CC) HARQ, IR-HARQ, or IF-HARQ. For IF-HARQ, additional decisions may be made.

公开(公告)号：US20210204346A1

公开(公告)日：2021-07-01

申请号：US16610160

申请日：2018-04-30

Applicant: IDAC Holdings, Inc.

Inventor： Chunxuan Ye ,  Fengjun Xi

IPC: H04W76/19 ,  H04B7/06 ,  H04W16/28

Abstract: Systems, methods, and instrumentalities are disclosed for receiving, at a wireless transmit/receive unit (WTRU), configuration information associated with beam failure recovery, detecting a beam failure and sending a first beam failure recovery request message on a first beam to a network entity, determining that a beam failure recovery response message has not been received using the configuration information associated with beam failure recovery, and if the WTRU is associated with a static rotation state or a low rotation state, performing a per-beam based recovery, and if the WTRU is associated with a high rotation state, performing an omni-directional beam recovery.