公开(公告)号：US20180110052A1

公开(公告)日：2018-04-19

申请号：US15837463

申请日：2017-12-11

Applicant: QUALCOMM Incorporated

Inventor： Yongbin Wei ,  Durga Prasad Malladi ,  Tao Luo ,  Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen

IPC: H04W72/04 ,  H04W74/08 ,  H04L27/26 ,  H04W72/12

CPC classification number: H04W72/0453 ,  H04L27/2601 ,  H04W72/0413 ,  H04W72/1268 ,  H04W74/0833

Abstract: Techniques for wireless communications over a shared radio frequency spectrum band, may include techniques for transmitting uplink data transmissions using allocated uplink resources. Allocated uplink resources may include an uplink channel comprising a number of allocated interlaces of resource blocks (RBs) for use by a user equipment (UE). An incoming data stream may be processed and data separated into each of the allocated interlaces of RBs for the UE. Such separation may be through demultiplexing the data stream to obtain data for the allocated interlaces of RBs. The demultiplexed data may be mapped onto associated resource elements associated with the allocated interlaces of RBs, and transmitted. Different types of uplink channels, such as a physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH) and/or a physical random access channel (PRACH) may be allocated to interlaces of RBs in one or more subframes of a transmitted radio frame.

公开(公告)号：US09949275B2

公开(公告)日：2018-04-17

申请号：US14492437

申请日：2014-09-22

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Tao Luo ,  Peter Gaal

IPC: H04W72/08 ,  H04W16/14 ,  H04L5/00 ,  H04W74/08 ,  H04W72/04 ,  H04L5/14

CPC classification number: H04W72/082 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0094 ,  H04L5/14 ,  H04W16/14 ,  H04W72/042 ,  H04W74/0808

Abstract: Uplink control channel management is disclosed for LTE/LTE-A communication systems with unlicensed spectrum in which two or more physical resource blocks (PRBs) are allocated for uplink control channel transmission. The uplink control information (UCI) payload may be determined based on clear channel assessment (CCA) information associated with carriers scheduled for transmission of the UCI data. With the UCI payload determined, two or more uplink control channel messages may be generated according to at least one control channel format, wherein uplink control channel messages include the UCI payload. These generated uplink control channel messages may then be transmitted over the allocated PRBs.

公开(公告)号：US20180035463A1

公开(公告)日：2018-02-01

申请号：US15649074

申请日：2017-07-13

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jing Sun ,  Anastasios Stamoulis ,  Aleksandar Damnjanovic ,  Juan Montojo

IPC: H04W74/08 ,  H04W72/04 ,  H04W16/14

CPC classification number: H04W74/0816 ,  H04W16/14 ,  H04W72/0453 ,  H04W88/06

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) or base station communicating in an unlicensed radio frequency spectrum band may transmit a signal (e.g., a request-to-send (RTS) or clear-to-send (CTS) signal) in a licensed radio frequency spectrum band to decrease the likelihood that neighboring devices will transmit interfering communications. Specific resources may be designated in the licensed radio frequency spectrum band for transmitting these signals, and these resources may be associated with specific unlicensed channels. Signaling in the licensed radio frequency spectrum band may also carry an indication of the unlicensed channel being used or other information relevant to the unlicensed communication. The RTS/CTS signaling in licensed radio frequency spectrum band may be transmitted during a downlink transmit opportunity or an uplink transmit opportunity, or both. Different energy detection thresholds may apply to RTS/CTS signals in licensed and unlicensed spectrum.

公开(公告)号：US09877343B2

公开(公告)日：2018-01-23

申请号：US15403992

申请日：2017-01-11

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Durga Prasad Malladi ,  Yongbin Wei ,  Peter Gaal ,  Wanshi Chen ,  Aleksandar Damnjanovic ,  Tao Luo

IPC: H04J1/16 ,  H04W74/08 ,  H04L5/00 ,  H04W52/02 ,  H04W88/04 ,  H04W88/08

CPC classification number: H04W52/0225 ,  H04B7/14 ,  H04L5/0007 ,  H04W52/0206 ,  H04W52/0209 ,  H04W52/0216 ,  H04W52/0229 ,  H04W74/0833 ,  H04W88/04 ,  H04W88/08 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/24 ,  Y02D70/25

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus transitions to a dormant state and transmits a very low duty cycle signal (LDCS) while in the dormant state. The apparatus may transmit an LDCS configuration to a second entity, the second entity being one of an LPN that is not in a dormant state and a macro cell. The apparatus may further monitor for a RACH messages at a predetermined RACH delay after transmitting the LDCS. The apparatus may transition to a DRX/DTX mode. The DRX/DTX mode may be matched to at least one connected UE.

公开(公告)号：US09872313B2

公开(公告)日：2018-01-16

申请号：US14856374

申请日：2015-09-16

Applicant: QUALCOMM Incorporated

Inventor： Onkar Jayant Dabeer ,  Aleksandar Damnjanovic ,  Jelena Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Ozcan Ozturk ,  Hao Xu ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04W72/04 ,  H04W72/12 ,  H04W72/14 ,  H04W74/08 ,  H04W28/02 ,  H04W72/08

CPC classification number: H04W74/08 ,  H04W28/0278 ,  H04W72/042 ,  H04W72/08 ,  H04W72/1284 ,  H04W72/14

Abstract: Contention-based uplink communications within a wireless communications system are provided in which a user equipment (UE) may transmit data to a base station autonomously, and thereby reduce delay with established procedures for allocating uplink resources to a UE. A base station may allocate contention-based uplink resources from a set of available uplink resources. A UE may determine that data is to be transmitted using contention-based uplink resources, identify available contention-based resources allocated by the base station, and may autonomously transmit the data using the allocated contention-based resources. The contention-based uplink resources may include a subset of available physical uplink shared channel (PUSCH) resources. The contention-based PUSCH resources may include allocated bins, and a UE may select CB-PUSCH resources from one of the bins for transmission of the uplink data.

公开(公告)号：US20180014298A1

公开(公告)日：2018-01-11

申请号：US15585027

申请日：2017-05-02

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Aleksandar Damnjanovic ,  Juan Montojo

IPC: H04W72/04 ,  H04L1/18 ,  H04W72/14 ,  H04L5/00

CPC classification number: H04W72/0446 ,  H04L1/1614 ,  H04L1/1812 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1854 ,  H04L1/1887 ,  H04L1/189 ,  H04L5/0055 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communication are described. A mobile device may be scheduled for resources of multiple transmission time intervals (TTIs) with a downlink control message; some or all of the multiple TTIs may be associated with different hybrid automatic repeat request (HARQ) processes. Each TTI may include data mapped to one transport block (TB), and each TB may be associated with a separate HARQ process. The downlink control message may include an indication of which HARQ processes are associated with resources of the multiple TTIs scheduled by the message. For example, the downlink control message may include a mapping (e.g., a bitmap) that indicates a relationship between each HARQ process and each TTI scheduled by the message. Feedback for TBs of some TTIs may differ, and an acknowledgment of receipt or successful decoding may depend on timing of TTIs in relation to a control message.

公开(公告)号：US09867100B2

公开(公告)日：2018-01-09

申请号：US15015906

申请日：2016-02-04

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Yongbin Wei ,  Aleksandar Damnjanovic ,  Naga Bhushan

IPC: H04W36/18 ,  H04W76/02 ,  H04L5/00 ,  H04W16/32 ,  H04W84/04 ,  H04W72/04 ,  H04W72/12 ,  H04L1/18 ,  H04L1/00 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W36/18 ,  H04L1/1812 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0057 ,  H04L2001/0092 ,  H04W16/32 ,  H04W72/0453 ,  H04W72/1278 ,  H04W72/1284 ,  H04W84/047 ,  H04W88/02 ,  H04W88/08

Abstract: A communication environment with carrier aggregation (CA) is disclosed in which a UE is configured for communication at a first time with a first network node via a primary component carrier (PCC) and a second network node via a secondary CC (SCC). At a second time, the UE is configured for communication with a third network node via the SCC at a second time. The UE maintains communication with the first network node via the PCC without triggering handover at the UE during the establishing communication with the third network node.

公开(公告)号：US09867072B2

公开(公告)日：2018-01-09

申请号：US14846447

申请日：2015-09-04

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Aleksandar Damnjanovic ,  Peter Gaal

IPC: H04L5/00 ,  H04W24/08 ,  H04B7/06 ,  H04W48/12 ,  H04L5/14 ,  H04W84/04 ,  H04W24/10

CPC classification number: H04W24/08 ,  H04B7/0626 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0092 ,  H04L5/1469 ,  H04W24/10 ,  H04W48/12 ,  H04W84/042

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines a subframe type for a neighbor cell(s), for example, to perform CRS based measurements for the neighbor cell(s). The UE determines whether a CRS is present in subframe(s) of a duration of a DRS for the neighbor cell(s) based on TDD configuration and an MBSFN configuration of a serving cell and at least one of received neighbor cell configuration information indicating at least one of a TDD configuration and a configuration of neighboring cell(s), received configuration of DRSs for neighboring cell(s), the configuration including at least a starting subframe index for the DRS and a duration of the DRS.

公开(公告)号：US20180006778A1

公开(公告)日：2018-01-04

申请号：US15709374

申请日：2017-09-19

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Durga Prasad Malladi ,  Wanshi Chen ,  Yongbin Wei ,  Madhavan Srinivasan Vajapeyam ,  Tao Luo ,  Peter Gaal ,  Hao Xu

IPC: H04L5/00 ,  H04W72/04 ,  H04J11/00 ,  H04W56/00 ,  H04L5/14 ,  H04W74/08

CPC classification number: H04L5/0007 ,  H04J11/00 ,  H04J2011/0096 ,  H04L5/14 ,  H04W56/001 ,  H04W72/042 ,  H04W72/0446 ,  H04W74/08

Abstract: Techniques are described for wireless communication. A first method may include performing a clear channel assessment (CCA) on an unlicensed radio frequency spectrum band; transmitting an indication of a time division duplexing (TDD) configuration over the unlicensed radio frequency spectrum band when the CCA is successful; and transmitting downlink data over the unlicensed radio frequency spectrum band in accordance with the TDD configuration when the CCA is successful. A second method may include performing a CCA on an unlicensed radio frequency spectrum band; dynamically determining, based at least in part on at least one grant to a user equipment (UE), and for a period following the CCA, a number of uplink subframes for communication over the unlicensed radio frequency spectrum band; and transmitting downlink data over the unlicensed radio frequency spectrum band in accordance with the timing of the number of uplink subframes when the CCA is successful.

公开(公告)号：US09860776B2

公开(公告)日：2018-01-02

申请号：US14743825

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Kiran Kumar Somasundaram ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Aleksandar Damnjanovic ,  Wanshi Chen ,  Xiaoxia Zhang ,  Hao Xu ,  Ravi Teja Sukhavasi

IPC: H04W24/08 ,  H04W74/08

CPC classification number: H04W24/08 ,  H04W74/0808

Abstract: The present disclosure provides methods and apparatuses for multi-carrier transmissions over adjacent channels that reduce self-jamming due to asymmetric interference. In an aspect, a large bandwidth load-base equipment (LBE) carrier may be provided such that CCA is performed jointly over the entire bandwidth. In another aspect, additional CCA timeslots may be used to synchronize the two carriers. In a further aspect, an extended CCA may be performed on a primary unlicensed carrier while a simple CCA may be performed on a secondary unlicensed carrier. In yet another aspect, LBE may be deployed on some carriers while frame-base equipment (FBE) may be deployed on other carriers.