公开(公告)号：US09893852B2

公开(公告)日：2018-02-13

申请号：US14460996

申请日：2014-08-15

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Naga Bhushan

IPC: H04W16/14 ,  H04L5/00 ,  H04L27/00 ,  H04L5/14

CPC classification number: H04L5/0044 ,  H04L5/001 ,  H04L5/1469 ,  H04L27/0006 ,  H04W16/14

Abstract: Methods, systems, and devices are described for clear channel assessments (CCAs) on multiple component carriers transmitted using an unlicensed or shared spectrum. A set of component carriers may be identified for transmission of communications signals on the unlicensed or shared spectrum, and a CCA for one component carrier of the set may be staggered to occur at a different time than a CCA for a different component carrier of the setoff component carriers. The staggering of CCAs may allow for CCA to be performed at different times for different component carriers, thus increasing opportunities to gain channel access in the unlicensed or shared spectrum.

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：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：US09814056B2

公开(公告)日：2017-11-07

申请号：US15048829

申请日：2016-02-19

Applicant: QUALCOMM Incorporated

Inventor： Hua Wang ,  Junyi Li ,  Tingfang Ji ,  Naga Bhushan

IPC: H04W72/10 ,  H04W72/14 ,  H04W72/08 ,  H04W72/12 ,  H04W72/04 ,  H04W92/20

CPC classification number: H04W72/10 ,  H04W72/0446 ,  H04W72/082 ,  H04W72/1231 ,  H04W72/1242 ,  H04W72/1247 ,  H04W72/1268 ,  H04W72/1273 ,  H04W72/14 ,  H04W92/20

Abstract: Aspects of the present disclosure relate to methods and apparatus for interference management of wireless links with overriding link priority. The switched wireless link or connection may have lower or higher priority than the non-switched or scheduled link. The priority order between the links may be overridden in certain conditions.

公开(公告)号：US09794944B2

公开(公告)日：2017-10-17

申请号：US14946374

申请日：2015-11-19

Applicant: QUALCOMM Incorporated

Inventor： Joseph Binamira Soriaga ,  Tingfang Ji ,  Peter Pui Lok Ang ,  Naga Bhushan ,  Keiichi Kubota ,  Gavin Bernard Horn

IPC: H04W72/00 ,  H04W72/04 ,  H04W76/04 ,  H04W4/06 ,  H04W4/02 ,  H04L5/00

CPC classification number: H04W72/0486 ,  H04L5/0053 ,  H04W4/025 ,  H04W4/06 ,  H04W72/042 ,  H04W76/27

Abstract: A system and method for mobility tracking of user equipment in a network includes a user equipment. The user equipment includes an antenna for receiving and sending signals to a plurality of network nodes in a network and a processor coupled to the antenna. The processor is configured to broadcast, using the antenna, a pilot signal to advertise the user equipment, receive, using the antenna, a pilot response from a first network node acting as a serving node for the user equipment, and communicate with the network through the serving node. The pilot signal includes a reference sequence for the network nodes to track followed by a payload including information about an identity of the user equipment. In some embodiments, the reference sequence varies based on a state of the user equipment. In some embodiments, the reference sequence is randomly selected.

公开(公告)号：US20170288823A1

公开(公告)日：2017-10-05

申请号：US15628401

申请日：2017-06-20

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Durga Prasad Malladi ,  Yongbin Wei ,  Peter Gaal ,  Tao Luo ,  Tingfang Ji ,  Gavin Bernard Horn ,  Wanshi Chen ,  Aleksander Damnjanovic

IPC: H04W28/08 ,  H04L1/00 ,  H04L27/00 ,  H04L27/26 ,  H04L5/00 ,  H04L5/14 ,  H04W16/14 ,  H04W24/02 ,  H04W28/02 ,  H04W28/16 ,  H04W48/10 ,  H04W56/00 ,  H04W72/04 ,  H04W72/08 ,  H04W74/00 ,  H04W74/04 ,  H04W74/08 ,  H04W76/02 ,  H04J11/00 ,  H04W84/12 ,  H04W88/02 ,  H04W88/06 ,  H04W88/08

Abstract: Methods and apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. A first method includes performing clear channel assessment (CCA) to determine availability of an unlicensed spectrum, transmitting a request-to-send (RTS) signal to a set of user equipments (UEs) using the unlicensed spectrum when a determination is made that the unlicensed spectrum is available, and receiving, in the unlicensed spectrum, a common clear-to-send (CTS) signal and an individual CTS signal from one or more of the UEs in response to the RTS signal. A second method includes transmitting an RTS signal in an unlicensed spectrum or a V-RTS signal in a licensed spectrum, addressed to a set of UEs, and transmitting a CTS-to-self signal in the unlicensed spectrum along with the transmission of the V-RTS signal.

公开(公告)号：US09781693B2

公开(公告)日：2017-10-03

申请号：US15445616

申请日：2017-02-28

Applicant: QUALCOMM Incorporated

Inventor： Tingfang Ji ,  Gavin Bernard Horn ,  John Edward Smee ,  Joseph Binamira Soriaga ,  Naga Bhushan ,  Jing Jiang ,  Kambiz Azarian Yazdi ,  Peter Pui Lok Ang ,  Peter Gaal ,  Krishna Kiran Mukkavilli ,  Alexei Yurievitch Gorokhov

IPC: H04W48/20 ,  H04W56/00 ,  H04W8/00 ,  H04W4/06 ,  H04W76/04

CPC classification number: H04W56/0015 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0058 ,  H04W4/06 ,  H04W8/005 ,  H04W48/14 ,  H04W56/00 ,  H04W72/04 ,  H04W76/20 ,  H04W76/27 ,  H04W76/28

Abstract: Methods, systems, and devices are described for wireless communication. In one method, a method of wireless communication at a user equipment (UE) includes receiving a synchronization signal. The synchronization signal may be common to a plurality of cells within a network. The method further includes acquiring a timing of the network based on the synchronization signal, and transmitting a pilot signal in response to acquiring the timing of the network. The pilot signal may identify the UE and be concurrently receivable by the plurality of cells within the network. Other aspects, features, and embodiments are also claimed and described.

公开(公告)号：US09774431B2

公开(公告)日：2017-09-26

申请号：US14658915

申请日：2015-03-16

Applicant: QUALCOMM Incorporated

Inventor： Avneesh Agrawal ,  Ashwin Sampath ,  Ravi Palanki ,  Naga Bhushan ,  Raja Sekhar Bachu ,  Aamod Dinkar Khandekar

IPC: H04H20/71 ,  H04L5/00 ,  H04W72/12 ,  H04L1/18 ,  H04W72/00

CPC classification number: H04L5/005 ,  H04L1/1893 ,  H04L5/0048 ,  H04L5/0082 ,  H04W72/005 ,  H04W72/1247

Abstract: Systems and methodologies are described that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell-specific reference signals (CRS), to improve hearability thereof for applications such as trilateration and/or the like. In particular, PRSs can be transmitted in designated or selected positioning subframes. Resource elements within the positioning subframe can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, potions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.

公开(公告)号：US09756563B2

公开(公告)日：2017-09-05

申请号：US15393736

申请日：2016-12-29

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Joseph Patrick Burke ,  Tingfang Ji ,  Naga Bhushan ,  Krishna Kiran Mukkavilli ,  Joseph Binamira Soriaga ,  John Edward Smee

IPC: H04W72/00 ,  H04W52/02 ,  H04L1/00 ,  H04W72/04

CPC classification number: H04W52/0212 ,  H04L1/0018 ,  H04W52/0206 ,  H04W52/0209 ,  H04W52/0216 ,  H04W52/028 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/048 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146

Abstract: Systems, methods, apparatuses, and computer-program products for performing dynamic bandwidth switching between control signals and data signals of differing bandwidths are disclosed. Frame formats are disclosed in which control signals are transmitted at different bandwidths than data signals. Receiver architectures for receiving the signaling formats are disclosed. A receiver can receive a relatively narrowband control signal while consuming a relatively low power and then dynamically adjust characteristics of various components to receive a data signal at a higher bandwidth while consuming a relatively higher power.

公开(公告)号：US20170188385A1

公开(公告)日：2017-06-29

申请号：US15264447

申请日：2016-09-13

Applicant: QUALCOMM Incorporated

Inventor： Santosh Paul Abraham ,  Naga Bhushan ,  Tingfang Ji

IPC: H04W74/04 ,  H04L29/06 ,  H04L1/00 ,  H04W74/00

Abstract: The disclosure relates in some aspects to resource requirement signaling and rate setting for communication on an unlicensed band. The disclosure also relates in some aspects to determining a token arrival rate as a function of traffic arrival information. In some aspects, the disclosed schemes may avoid traffic collisions on a resource and promote access fairness on the resource.