公开(公告)号：US20190158250A1

公开(公告)日：2019-05-23

申请号：US16120909

申请日：2018-09-04

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok ANG ,  Wanshi Chen ,  Heechoon Lee ,  Jing Sun ,  Joseph Binamira Soriaga ,  Yang Yang

IPC: H04L5/00 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a first hybrid automatic repeat request acknowledgement (HARQ-ACK) payload for a first component carrier (CC) set based at least in part on a first downlink assignment index (DAI). The UE may determine a second HARQ-ACK payload for a second CC set based at least in part on a second DAI. The UE may transmit the first HARQ-ACK payload for the first CC set and the second HARQ-ACK payload for the second CC set. Numerous other aspects are provided.

公开(公告)号：US10257844B2

公开(公告)日：2019-04-09

申请号：US15681296

申请日：2017-08-18

Applicant: QUALCOMM Incorporated

Inventor： Yang Yang ,  Jing Jiang ,  Gabi Sarkis ,  Jamie Menjay Lin ,  Tao Luo

IPC: H04L1/00 ,  H04L1/08 ,  H04W16/28 ,  H04W72/00 ,  H04W72/04 ,  H04W72/08 ,  H04B7/06 ,  H03M13/37 ,  H04W88/02 ,  H04W88/08

Abstract: Various features related to decoding jointly coded broadcast information and beam/symbol index information to achieve higher reliability and reduced decoding errors from the perspective of a receiving device such as a UE are described. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be configured to receive a first beam and a second beam of a plurality of beams from a base station, the first beam including broadcast information and a first beam index information jointly encoded together, and the second beam including broadcast information and a second beam index information jointly encoded together, determine a first LLR of the first beam, determine a second LLR of the second beam, and decode the broadcast information and the first beam index information in the first beam based on both the first LLR and the second LLR.

公开(公告)号：US20190044540A1

公开(公告)日：2019-02-07

申请号：US16051262

申请日：2018-07-31

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Gabi Sarkis ,  Yang Yang ,  Peter Gaal ,  Joseph Binamira Soriaga ,  Shrinivas Kudekar

IPC: H03M13/13 ,  H04L1/00 ,  H03M13/27 ,  H04W72/04

Abstract: A wireless device (e.g., a base station or user equipment (UE)) may encode a codeword using a polar code for transmission over a wireless channel. The device may identify a set of bit locations of the polar code for a set of information bits based on a bit index reliability sequence. The bit index reliability sequence may be based on applying an ordered combination of a universal partial order, an analytical method, and a simulation. The bit index reliability sequence may be determined based on a binary bit weighting for the set of bit channels that applies one or more weighting factors. In some cases, the device may store the bit index reliability sequence in a lookup table for encoding, decoding, or both. A device receiving the transmitted codeword may similarly utilize the bit index reliability sequence to decode the codeword and determine the transmitted information bits.

公开(公告)号：US20180376468A1

公开(公告)日：2018-12-27

申请号：US16014489

申请日：2018-06-21

Applicant: QUALCOMM Incorporated

Inventor： Jamie Menjay Lin ,  Yang Yang ,  Tao Luo

IPC: H04W72/04 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communication employing polar code techniques are described. In some examples, polar codes with a cross-referenceable nested structure for hierarchical signaling may be used in a wireless communication system. For example, a user equipment may monitor a common portion and a dedicated portion of a control channel, the common portion assigned to a first set of control channel resources and the dedicated portion assigned to a second set of control channel resources within the control channel. The UE may concatenate, based at least in part on the monitoring, information fields of one or more symbols received via the first and second sets of control channel resources to form a polar-encoded codeword. The UE may decode the polar-encoded codeword to obtain common information from the common portion and dedicated information from the dedicated portion.

公开(公告)号：US10142060B2

公开(公告)日：2018-11-27

申请号：US15905243

申请日：2018-02-26

Applicant: QUALCOMM INCORPORATED

Inventor： Changlong Xu ,  Jing Jiang ,  Yang Yang ,  Gabi Sarkis

IPC: H03M13/00 ,  H04L1/00

Abstract: Polar encoding using two or more concatenated cyclic redundancy check (CRC) data values may enhance CRC-aided successive cancellation list decoding in a communication system. A polar encoding method may include determining first CRC data from source data, combining the source data and the first CRC data to form first combined data, determining second CRC data from the first combined data, and combining the source data, the first CRC data, and the second CRC data to form second combined data.

公开(公告)号：US20180331693A1

公开(公告)日：2018-11-15

申请号：US15953239

申请日：2018-04-13

Applicant: QUALCOMM Incorporated

Inventor： Huang Lou ,  Jing Jiang ,  Enoch Shiao-Kuang Lu ,  Gabi Sarkis ,  Yang Yang ,  Hari Sankar

IPC: H03M13/09 ,  H03M13/15

Abstract: Size ambiguity and false alarm rate reduction for polar codes. A user equipment (UE) may determine a decoding candidate bit sequence for a polar-encoded codeword having a codeword size based on a decoding hypothesis for control information having a particular bit length of multiple different bit lengths for the codeword size. The UE may calculate an error detection code (EDC) value for a payload portion of the decoding candidate bit sequence using an EDC algorithm, and may initialize an EDC variable state with at least one non-zero bit value. Scrambling or interleaving of bits may also be performed prior to, or after, polar encoding and may depend on the bit length. In examples, information bits may be bit-reversed prior to generating an EDC value. In examples, the encoded bits may include multiple EDC values to assist the UE in performing early termination and to reduce a false alarm rate.

公开(公告)号：US20180323809A1

公开(公告)日：2018-11-08

申请号：US15967592

申请日：2018-04-30

Applicant: QUALCOMM Incorporated

Inventor： Jamie Menjay Lin ,  Gabi Sarkis ,  Yang Yang

IPC: H03M13/37 ,  H03M13/13 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communication are described. The examples described herein may enable a decoder to determine path metrics for various decoding paths based on identified frozen bit locations of a polar code. The path metric for a decoding path may be based on bit metrics determined for the identified frozen bit locations along the decoding path. Once the path metrics and bit metrics are determined, the decoder may compare these metrics to threshold criteria and determine whether to discard decoding paths based on the comparison. The techniques described herein for discarding decoding paths may allow the decoder to discard, prune, or disqualify certain decoding paths that are unlikely to provide an accurate representation of bits received from another device. Consequently, the decoder may be able to save power by terminating a decoding process early (i.e., early termination) if all paths are discarded, pruned, or disqualified.

公开(公告)号：US20180227848A1

公开(公告)日：2018-08-09

申请号：US15888980

申请日：2018-02-05

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Yang Yang ,  Tingfang Ji ,  Alexei Yurievitch Gorokhov

IPC: H04W52/02 ,  H04L5/00 ,  H04W72/04

Abstract: Tracking reference signal designs for deployments without continuous reference signal transmission are described. The tracking reference signals may be extended in the frequency domain from a synchronization signal block and may occupy a subset or all of the symbol periods of the synchronization signal block. The tracking reference signals may have the same subcarrier spacing as synchronization signals and may be punctured in the frequency domain. Alternatively, the tracking reference signals may include common control reference signals transmitted periodically with paired reference signals in a data channel. The common control reference signals and paired reference signals may be transmitted regardless of the presence of control or data. For improved tracking after a transition to a connected mode or a long discontinuous reception (DRX) cycle, a slot including tracking reference signals may be repeated or an additional tracking reference signal pattern may be transmitted.

公开(公告)号：US20180083824A1

公开(公告)日：2018-03-22

申请号：US15612562

申请日：2017-06-02

Applicant: QUALCOMM Incorporated

Inventor： Yang Yang ,  Jing Jiang ,  Alexandros Manolakos ,  Santosh Paul Abraham

IPC: H04L27/38 ,  H04L27/22 ,  H04W72/04 ,  H04B1/10 ,  H04L1/00

CPC classification number: H04L27/0008 ,  H04B1/1027 ,  H04L1/0003 ,  H04L1/0023 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/14 ,  H04L27/183 ,  H04L27/186 ,  H04L27/2634 ,  H04L27/3405 ,  H04L27/3488 ,  H04W16/14 ,  H04W72/0446

Abstract: Techniques are described that provide nested constellations in which a lower order modulation scheme may be nested within constellation points of a higher-order modulation scheme. A higher-order modulation scheme, having a first constellation, may be used for a first subset of transmissions (e.g., data payload transmissions). A lower-order modulation scheme, having a second constellation, may be used for a second subset of transmissions (e.g., reference signal transmissions, embedded control transmissions, tapered payload transmissions, etc.). A subset of constellation points of the first constellation may be selected for transmitting the second subset of transmissions. A receiver may receive the transmissions and demodulate/decode the transmissions. In the event that other transmitters are transmitting concurrently, and using similar nested constellation techniques, the receiver may be able to perform improved interference mitigation compared to interference mitigation that may be performed on interfering signals that use different constellation points.

公开(公告)号：US20180063818A1

公开(公告)日：2018-03-01

申请号：US15490851

申请日：2017-04-18

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Yang Yang ,  Peter Ang ,  Chong Li ,  Hung Ly

IPC: H04W72/04 ,  H04W28/20 ,  H04W74/08 ,  H04W24/02

CPC classification number: H04W72/042 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0094 ,  H04W24/02 ,  H04W28/20 ,  H04W74/0833

Abstract: Aspects of the disclosure relate to determination of bandwidth, frequencies, or a set one or more of subbands that carries a downlink control channel. In some examples, a set of one or more subbands that carries a downlink control channel may be determined based on a function of a predetermined reference resource location. The predetermined reference resource location may be a set of one or more subbands that carries one or more synchronization signals and a broadcast channel. Other aspects, embodiments, and features are also claimed and described.