公开(公告)号：US09894647B2

公开(公告)日：2018-02-13

申请号：US15494457

申请日：2017-04-22

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Peter Gaal

IPC: H04L5/14 ,  G01R31/08 ,  H04B7/00 ,  H04J3/00 ,  H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04W24/02 ,  H04W84/14 ,  H04W84/04

CPC classification number: H04W72/042 ,  H04B7/0617 ,  H04L1/1812 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0053 ,  H04W24/02 ,  H04W72/04 ,  H04W72/0446 ,  H04W84/045 ,  H04W84/14

Abstract: Aspects of the present disclosure provide techniques and apparatus for enhancing downlink coverage for certain user equipments (UEs) (e.g., low cost, low data rate UEs). Certain types of UEs may have limited coverage or should receive enhanced coverage relative to other types of UEs. For example, some types of low cost UEs may have only a single receive chain, thereby limiting DL coverage, while other types of UEs benefit from multiple receive chains. One example method generally includes identifying a first type of one or more UEs that is to receive enhanced downlink (DL) coverage relative to a second type of UEs and utilizing one or more DL coverage enhancement techniques when communicating with the first type of UEs, the one or more DL coverage enhancement techniques designed to adjust at least for reduced DL processing gain of the first type of UEs relative to the second type of UEs.

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：US09871636B2

公开(公告)日：2018-01-16

申请号：US14085627

申请日：2013-11-20

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Tingfang Ji ,  Hao Xu ,  Peter Gaal

IPC: H04L5/00 ,  H04L5/14

CPC classification number: H04L5/0053 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0082 ,  H04L5/0094 ,  H04L5/14

Abstract: Aspects of the present disclosure provide techniques and apparatus for enhanced control channel element (ECCE) based physical downlink shared channel (PDSCH) resource allocation for long-term evolution (LTE). A method is provided for wireless communications by a user equipment (UE). The method generally includes determining resources assigned for a data channel, based on a resource granularity associated with a control channel and processing the data channel transmissions in a subframe based on the determination. The data channel may comprise a PDSCH. According to certain aspects, the UE may receive downlink control information (DCI) having a number of bits indicating VRBs assigned for PDSCH. Each VRB may include ECCEs from the same or different enhanced resource element group (EREG). ECCEs may span multiple PRB pairs or the same PRB pair. The UE may perform rate matching around enhanced physical downlink control channel (EPDCCH) overlapping assigned PDSCH resources.

公开(公告)号：US20180014143A1

公开(公告)日：2018-01-11

申请号：US15642244

申请日：2017-07-05

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Hao Xu ,  Peter Gaal

IPC: H04W4/00 ,  H04W72/00 ,  H04W72/04 ,  H04L5/00 ,  H04W88/06

CPC classification number: H04W4/70 ,  H04L5/0048 ,  H04W72/005 ,  H04W72/0413 ,  H04W72/0453 ,  H04W72/048 ,  H04W88/06

Abstract: Techniques are described for wireless communication. A method for wireless communication at a wireless device includes transmitting an indication of a capability to operate according to a plurality of modes for communicating with a network on at least one shared channel in a connected mode. The plurality of modes include a narrowband mode and at least one wider band mode. Each wider band mode is based at least in part on a shared channel bandwidth between a narrowband shared channel bandwidth associated with the narrowband mode and a wideband shared channel bandwidth associated with a wideband mode. The method also includes receiving a shared channel assignment associated with operation in the narrowband mode or one of the at least one wider band mode, and communicating on a shared channel, when in the connected mode, in accordance with the received shared channel assignment.

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.

公开(公告)号：US09839027B2

公开(公告)日：2017-12-05

申请号：US15439141

申请日：2017-02-22

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Wanshi Chen ,  Yongbin Wei ,  Peter Gaal ,  Tingfang Ji

IPC: H04W72/04 ,  H04W4/00 ,  H04B7/0413 ,  H04W16/28 ,  H04W84/04

CPC classification number: H04W72/042 ,  H04B7/0413 ,  H04W4/70 ,  H04W16/28 ,  H04W28/06 ,  H04W48/12 ,  H04W84/042

Abstract: The described aspects include methods and apparatus providing MTC in a wireless network. In an aspect, a narrow bandwidth within a wide system bandwidth is allocated for communicating data related to MTC. MTC control data generated for communicating over one or more MTC control channels for an MTC UE within the narrow bandwidth is transmitted over the one or more MTC control channels. The one or more MTC channels are multiplexed with one or more legacy channels over the wide system bandwidth. Other aspects are provided for transmission mode and content of the MTC control data or other MTC data.

公开(公告)号：US09839009B2

公开(公告)日：2017-12-05

申请号：US13948247

申请日：2013-07-23

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Stefan Geirhofer ,  Hao Xu

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0406 ,  H04L5/0053

Abstract: Certain aspects provide methods and apparatus for processing a control channel and/or a shared channel in a subframe based on a determination that one or more channel properties of the two channels are substantially the same. One example method generally includes receiving a control channel and a shared channel within a subframe; determining that one or more channel properties of the control channel and the shared channel in the subframe are substantially the same; and processing the control channel and the shared channel based on the determination. In this manner, estimations determined for a first channel may be assumed for a second channel whose channel properties are substantially the same as the first channel, rather than by separately determining the estimations for the second channel, thereby saving processing time.

公开(公告)号：US09826506B2

公开(公告)日：2017-11-21

申请号：US15217917

申请日：2016-07-22

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Tingfang Ji ,  Miguel Griot

IPC: H04W72/00 ,  H04W4/00 ,  H04L12/24 ,  H04W24/02 ,  H04W28/18 ,  H04W48/16 ,  H04W48/10 ,  H04W72/04 ,  H04W92/18

CPC classification number: H04W72/005 ,  H04L41/0866 ,  H04W4/70 ,  H04W24/02 ,  H04W28/18 ,  H04W48/10 ,  H04W48/16 ,  H04W72/048 ,  H04W92/18

Abstract: Methods, systems, and devices are described for facilitating Machine Type Communication in a wireless communications system. Link budget-limited MTC devices, may be supported. An MTC physical broadcast channel may be utilized for the Machine Type Communication. The MTC physical broadcast channel may be transmitted over one or more subframes different from a regular physical broadcast channel. The payload for the MTC physical broadcast channel may be reduced. The MTC physical broadcast channel may also be utilized to indicate the presence of paging and/or to indicate a change in system information. Some embodiments utilize one or more MTC-specific system information blocks. The MTC-specific system information blocks may combine and/or simplify multiple system information blocks. The location of the MTC system information blocks may be predetermined or information about their location may be transmitted over the MTC physical broadcast channel. An enhanced paging channel may be used to indicate system information updates.