公开(公告)号：US10021677B2

公开(公告)日：2018-07-10

申请号：US14882165

申请日：2015-10-13

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Arumugam Chendamarai Kannan ,  Yongbin Wei ,  Jelena Damnjanovic ,  Durga Prasad Malladi ,  Tao Luo

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/0025 ,  H04L1/0027 ,  H04L1/0039 ,  H04L1/1861 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/0446

Abstract: Methods, systems, and devices are described for wireless communication employing two-stage control channel messaging. Systems, methods, and apparatuses for two stage two-stage physical downlink control channel (PDCCH) with a downlink control information (DCI) flag and DCI format size indicator are described. For instance, the present disclosure presents an example method of wireless communication at a wireless device, which may include receiving, at a first bandwidth and during a transmission time interval (TTI), a first control channel message. In addition, the example method may include determining, based on a flag in the first control channel message, whether a second control channel message is present in the TTI. Furthermore, the example method may include receiving, at a second bandwidth, the second control channel message where the flag indicates that the second control channel message is present for the TTI.

公开(公告)号：US09992004B2

公开(公告)日：2018-06-05

申请号：US14965458

申请日：2015-12-10

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jelena Damnjanovic

IPC: H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04L1/00

CPC classification number: H04L5/0055 ,  H04L1/0057 ,  H04L1/0089 ,  H04L1/18 ,  H04L1/1819 ,  H04L1/1822 ,  H04L1/1896 ,  H04W72/0446

Abstract: Methods, systems, and devices are described for wireless communication. Wireless devices may exchange data using Medium Access Control (MAC) layer units known as transport blocks. The transport blocks may be partitioned into code block clusters (CBCs), each of which may include one or more code blocks. A receiving device may attempt to decode a transport block and send acknowledgement (ACK) and negative-acknowledgment (NACK) information to the transmitting device based on the whether each CBC was successfully decoded. The transmitting device may retransmit a redundancy version of a CBC for each NACK received. The transmitting device may group CBCs in segments of a transport block according to redundancy version. In some cases, the transmitting device may send a control message in a control channel which indicates the composition of the transport block.

公开(公告)号：US09991989B2

公开(公告)日：2018-06-05

申请号：US15173206

申请日：2016-06-03

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Yongbin Wei ,  Taesang Yoo ,  Siddhartha Mallik ,  Jing Sun

IPC: H04L1/00 ,  H04L1/18 ,  H04B17/336 ,  H03M13/45 ,  H04W84/04

CPC classification number: H04L1/0045 ,  H03M13/45 ,  H04B17/336 ,  H04L1/1812 ,  H04L1/1835 ,  H04L1/1845 ,  H04W84/042

Abstract: Methods, systems, and devices for soft hybrid automatic repeat request operation in wireless communication are described. A user equipment (UE) may fail to decode a received signal, for example. The UE may store a portion of the signal in a buffer if the signal size is greater than the buffer size; otherwise, the UE may store the entire signal in the buffer. The UE may then receive a second signal and combine the second signal with the stored portion of the first signal; the combined signal may be larger than the buffer size. This combined signal may, for example, have a code rate less than the first signal. The UE may perform a second decoding attempt on the combined signal. The UE may determine that the second decoding attempt failed and may store a portion of the combined signal in the buffer.

公开(公告)号：US09973923B2

公开(公告)日：2018-05-15

申请号：US13830747

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Durga Prasad Malladi ,  Siddhartha Mallik ,  Naga Bhushan ,  Yongbin Wei ,  Gavin Bernard Horn

IPC: H04W8/22 ,  H04W76/02 ,  H04W52/02 ,  H04W84/10

CPC classification number: H04W8/22 ,  H04W52/0206 ,  H04W76/14 ,  H04W84/10 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146

Abstract: A method of wireless communication includes receiving activation parameters at a low power node and detecting a proximity of an active user equipment (UE) based at least in part on the activation parameters. The activation parameters are triggered from a node different from the low power node, such as an eNodeB. The low power node initiates an activation sequence after detecting the active UE.

公开(公告)号：US20180097667A1

公开(公告)日：2018-04-05

申请号：US15442482

申请日：2017-02-24

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Dinkar Vasudevan ,  Seyedkianoush Hosseini ,  Jing Sun ,  Xiaoxia Zhang ,  Siddhartha Mallik ,  Juan Montojo

IPC: H04L25/03 ,  H04L27/34 ,  H04L12/703 ,  H04B17/14

CPC classification number: H04L25/0398 ,  H04B7/024 ,  H04B17/11 ,  H04B17/14 ,  H04B17/30 ,  H04B17/309 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0242 ,  H04L25/03955 ,  H04L25/03987 ,  H04L27/3488 ,  H04L45/28

Abstract: Wireless communications systems and methods related to over-the-air uplink-downlink (UL-DL) reciprocity calibration. A central unit transmits downlink (DL) calibration reference signal (RS) and a calibration request. The central unit receives, in response to the calibration request, a first uplink (UL) calibration RS and a first DL channel estimate associated with a first transmission point (TP) and a first wireless communication device. The central unit transmits a DL coordinated multipoint (CoMP) joint transmission signal according to an uplink-downlink (UL-DL) reciprocity calibration. The UL-DL reciprocity calibration is based on at least a first UL channel estimate based on the first UL calibration RS, the first DL channel estimate, a second UL channel estimate associated with a second TP and the first wireless communication device, and a second DL channel estimate associated with the second TP and the first wireless communication device.

公开(公告)号：US20180054832A1

公开(公告)日：2018-02-22

申请号：US15659592

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04W72/12 ,  H04W72/04 ,  H04W72/08

Abstract: Various aspects of the disclosure relate to feedback for independent links. For example, channel state feedback may be based on the channel state of multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). In some scenarios, channel state information (CSI) feedback may take into account the CSI-reference signals (CSI-RSs) from multiple links. For example, CSI feedback may be based on CSI-RSs from multiple links if the antenna sub-arrays for the links are close to one another. As another example, a decision as to whether CSI feedback is to be based on CSI-RSs from multiple links may depend on channel conditions.

公开(公告)号：US20180054811A1

公开(公告)日：2018-02-22

申请号：US15659576

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04W72/04 ,  H04W72/12

Abstract: Various aspects of the disclosure relate to communicating control information for independent links. For example, control information for one link may be sent via at least one other link. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). In some scenarios, one link may carry control information for multiple links. For example, one link may indicate the existence of or traffic on at least one other link. As another example, one link may transmit feedback for multiple links. In some scenarios, each link may be provisioned (e.g., as a primary link or a secondary link) to carry specific types of control information for one or more links.

公开(公告)号：US20180054348A1

公开(公告)日：2018-02-22

申请号：US15659598

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04L12/24 ,  H04W72/08 ,  H04L5/00

CPC classification number: H04L45/16 ,  H03M13/09 ,  H04B7/0626 ,  H04B7/0691 ,  H04B7/216 ,  H04B17/24 ,  H04B17/318 ,  H04L1/1854 ,  H04L5/003 ,  H04L5/0053 ,  H04L5/0094 ,  H04L12/1827 ,  H04L12/185 ,  H04L41/0668 ,  H04L2001/0093 ,  H04W24/02 ,  H04W24/04 ,  H04W24/08 ,  H04W48/08 ,  H04W52/146 ,  H04W52/16 ,  H04W52/241 ,  H04W52/243 ,  H04W52/346 ,  H04W52/386 ,  H04W52/42 ,  H04W52/50 ,  H04W52/54 ,  H04W52/56 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/044 ,  H04W72/0493 ,  H04W72/08 ,  H04W72/12 ,  H04W72/1252 ,  H04W72/1278 ,  H04W72/1284 ,  H04W76/19 ,  H04W76/22 ,  H04W92/20

Abstract: Various aspects of the disclosure relate to beam information for independent links. For example, beam information for one link may be sent on at least one other link. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, one link can indicate beam switching for at least one other link. In some scenarios, one link can indicate link recovery for at least one other link. In some scenarios, one link can indicate link failure for at least one other link.

公开(公告)号：US09882623B2

公开(公告)日：2018-01-30

申请号：US14850737

申请日：2015-09-10

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Siddhartha Mallik ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04W4/00 ,  H04B7/06 ,  H04B7/0456 ,  H04L1/00 ,  H04W72/12 ,  H04B7/0452

CPC classification number: H04B7/0619 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0636 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0028 ,  H04W72/1226

Abstract: Dual-thread feedback for non-orthogonal channels used in wireless communications systems is described. A first feedback thread may employ transmission strategy (TS) independent feedback and a second feedback thread may employ TS dependent feedback. The first feedback thread may include channel feedback from channel measurements (e.g., channel gain, noise covariance, etc.) and may be fed back periodically. A TS space may be determined that includes combinable TSs for UEs that may be grouped for non-orthogonal techniques, and one or more TS sets may be sent to the UEs. UEs may determine channel quality and/or other channel state information (CSI) for the TSs and report CSI for one or more TSs of the TS sets in a second feedback thread. Scheduling may be performed for transmissions to the UEs based on the feedback in the first and/or second feedback threads.

公开(公告)号：US20180027580A1

公开(公告)日：2018-01-25

申请号：US15499570

申请日：2017-04-27

Applicant: QUALCOMM Incorporated

Inventor： TAESANG YOO ,  Xiaoxia Zhang ,  Jing Sun ,  Siddhartha Mallik ,  Juan Montojo ,  Aleksandar Damnjanovic

IPC: H04W72/12 ,  H04W28/02 ,  H04L5/00 ,  H04W72/08 ,  H04L25/02 ,  H04W72/04

CPC classification number: H04W72/1231 ,  H04B7/024 ,  H04J11/0053 ,  H04L5/0035 ,  H04L5/0053 ,  H04L25/0204 ,  H04W28/0236 ,  H04W72/0413 ,  H04W72/046 ,  H04W72/082

Abstract: Joint aspects of coordinated multiple (CoMP) operations is discussed between multiple entities that may be in different CoMP clusters or even deployed by different operators. Participating base stations obtain channel related information such as sounding reference signals (SRS), channel state information (CSI), and the like from one or more neighbor user equipments (UE) served by a different base station. The base station determines a channel estimate at the neighbor UEs using the channel related information and selects a beamforming vector and schedules downlink transmissions to a served UE based on the channel estimates incorporating the channels of the other neighbor UEs. The selected beamforming vectors and transmission schedules minimizes the interference at the neighbor UEs.