公开(公告)号：US10172077B2

公开(公告)日：2019-01-01

申请号：US15426160

申请日：2017-02-07

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Yongbin Wei ,  Peter Gaal ,  Durga Prasad Malladi

IPC: H04L27/26 ,  H04W48/16 ,  H04L5/00 ,  H04W56/00 ,  H04W24/10 ,  H04W72/04 ,  H04W16/14 ,  H04W52/02 ,  H04L25/02

Abstract: Techniques are described for wireless communication. A first method includes receiving a first orthogonal frequency division multiplexing (OFDM) symbol including a plurality of reference signals (RSs) over a radio frequency spectrum band. The first method may also include receiving a second OFDM symbol including a first synchronization signal over the radio frequency spectrum band. A second method includes transmitting a first OFDM symbol including a plurality of RSs over an radio frequency spectrum band. The second method may also include transmitting a second OFDM symbol including a first synchronization signal over the radio frequency spectrum band. In each method, a first portion of the first OFDM symbol includes a higher density of the RSs than a remaining portion of the first OFDM symbol, and when included, the second OFDM symbol may be adjacent in time to the first OFDM symbol.

公开(公告)号：US10165536B2

公开(公告)日：2018-12-25

申请号：US15184977

申请日：2016-06-16

Applicant: QUALCOMM Incorporated

Inventor： Michael Mao Wang ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Yongbin Wei

IPC: H04W56/00 ,  H04J11/00

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify a set of non-overlapping periodic intervals for monitoring a synchronization signal, which may be composed of or may include a repeated sequence; and the UE may identify possible timing structure (e.g., subframe, slot, etc.) boundaries using the intervals. The UE may then determine that one of the possible boundaries is a boundary using a second synchronization signal. For instance, the UE may perform a cumulative correlation during each of a series of correlation periods corresponding to the periodic intervals. Each of the cumulative correlations may contain multiple coherent correlations associated with the sequence repetitions. From the cumulative correlations, the UE may identify possible boundaries. The UE may perform a secondary correlation based on a second synchronization signal for each possible boundary in order to determine the system timing.

公开(公告)号：US10149318B2

公开(公告)日：2018-12-04

申请号：US14812983

申请日：2015-07-29

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Yongbin Wei ,  Durga Prasad Malladi ,  Siddhartha Mallik ,  Xiaoxia Zhang ,  Hao Xu

IPC: H04W74/00 ,  H04W72/08 ,  H04W72/12 ,  H04J11/00

Abstract: Techniques are described for wireless communication. A first method includes receiving downlink control information for a first UE based at least in part on a group identifier associated with a NOMA group including the first UE and at least a second UE; and receiving a set of NOMA downlink transmissions at the first UE based at least in part on the downlink control information for the first UE. A second method includes receiving downlink control information for a first UE, the downlink control information for the first UE including an indication of at least a second UE; receiving downlink control information for the second UE based at least in part on the indication of at least the second UE; and receiving a set of NOMA downlink transmissions at the first UE based at least in part on the downlink control information for the first UE and the downlink control information for the second UE.

公开(公告)号：US10123301B2

公开(公告)日：2018-11-06

申请号：US15708030

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Durga Prasad Malladi ,  Yongbin Wei

IPC: H04W68/00 ,  H04W72/04 ,  H04W72/12 ,  H04W68/02 ,  H04W16/14 ,  H04W74/08

Abstract: Techniques are described for wireless communication. A first method includes receiving a transmission including a paging group indicator and an indication of a time window. The transmission may be received at a user equipment (UE) over an unlicensed radio frequency spectrum band. The first method may also include monitoring, based on the paging group indicator, the unlicensed radio frequency spectrum band during the time window to receive an asynchronous paging message from a base station. A second method includes transmitting the transmission over the unlicensed radio frequency spectrum band; performing a number of clear channel assessments (CCAs) on the unlicensed radio frequency spectrum band during the time window; and transmitting the paging message over the unlicensed radio frequency spectrum band at a transmission time during the time window. The transmission time may be based on a result of at least one of the CCAs.

公开(公告)号：US10117268B2

公开(公告)日：2018-10-30

申请号：US14856242

申请日：2015-09-16

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04W72/14 ,  H04L1/18 ,  H04W72/04 ,  H04L5/00

Abstract: A data structure for managing user equipment communications in a wireless communication system is presented. In some examples, the data structure may include one or more resource element blocks into which a frequency bandwidth of a downlink channel is divided within a symbol that defines a transmission time interval in a downlink subframe. Furthermore, the data structure may include a control region and a data region within at least one resource element block of the one or more resource element blocks. Additionally, the data structure may include a downlink resource grant, located within the control region, for a user equipment served by the downlink channel. In an additional aspect, a network entity and method for generating the example data structure are provided.

公开(公告)号：US10117246B2

公开(公告)日：2018-10-30

申请号：US14529997

申请日：2014-10-31

Applicant: QUALCOMM Incorporated

Inventor： Tingfang Ji ,  Peter Gaal ,  Yongbin Wei ,  Hao Xu ,  Wanshi Chen ,  Tao Luo ,  Durga Prasad Malladi ,  Naga Bhushan ,  Aleksandar Damnjanovic ,  Shimman Arvind Patel

IPC: H04W36/00 ,  H04W48/20 ,  H04W72/04 ,  H04W88/10

Abstract: Techniques are described for wireless communication. One method includes determining that a cell operates in a shared access radio frequency spectrum, and transmitting signaling information to a mobile device indicating that the cell is prohibited from serving as a primary serving cell based at least in part on the determination that the cell operates in the shared access radio frequency spectrum. Another method includes receiving signaling information at a mobile device from a base station indicating that a cell operating in a shared access radio frequency spectrum is prohibited from serving as a primary serving cell, and identifying the cell as prohibited from serving as a primary serving cell based at least in part on the received signaling information. Another method includes identifying, by a mobile device, a cell operating in a shared access radio frequency spectrum as a secondary serving cell based at least in part on information stored on the mobile device.

公开(公告)号：US10104683B2

公开(公告)日：2018-10-16

申请号：US14993592

申请日：2016-01-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Durga Prasad Malladi ,  Peter Gaal ,  Yongbin Wei ,  Hao Xu ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic

IPC: H04W72/12 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A receiving device may detect a signal associated with low latency transmissions and decode a non-low latency communication accordingly. The receiving device may receive an indicator from a transmitting device that indicates where and when low latency communications occur. The indication may specify frequency resources or symbols used by the low latency communication. The indicator may be transmitted during the same subframe as the low latency communication, at the end of a subframe, or during a subsequent subframe. The receiving device may use the indicator to mitigate low latency interference, generate channel estimates, and reliably decode the non-low latency communication. In some cases, the interfering low latency communication may occur within the serving cell of the receiving device; or the interfering low latency communication may occur in a neighboring cell.

公开(公告)号：US10085300B2

公开(公告)日：2018-09-25

申请号：US15040702

申请日：2016-02-10

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Miguel Griot ,  Peter Gaal ,  Masato Kitazoe ,  Wanshi Chen ,  Yongbin Wei

IPC: H04W76/28 ,  H04W24/08 ,  H04W4/70

CPC classification number: H04W76/28 ,  H04W4/70 ,  H04W24/08 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/21 ,  Y02D70/24

Abstract: Methods, systems, and devices for wireless communication are described. Wireless devices may operate in an extended connected discontinuous reception (eDRX) mode to increase energy efficiency and extend battery life. Control signaling may be used to initiate or support the extended sleep cycles associated with eDRX operation. In some cases, a system frame number (SFN) extension may be implemented to record frame cycles and differentiate SFNs that occur in a first frame cycle from SFNs that occur in a second frame cycle. Control techniques to support eDRX operation and maintain network synchronicity and compatibility may also be employed. In some examples, a wireless system may broadcast extended or dedicated system information updates to an eDRX capable device or devices. In some cases, devices may adjust the rate at which radio link monitoring (RLM) measurements are taken to timely determine radio link failures (RLFs) in conjunction with eDRX operation.

公开(公告)号：US10075270B2

公开(公告)日：2018-09-11

申请号：US14864056

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Durga Prasad Malladi ,  Yongbin Wei

IPC: H04L5/00 ,  H04L1/18 ,  H04W72/04 ,  H04W24/08 ,  H04L27/00

CPC classification number: H04L5/0048 ,  H04L1/1822 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/005 ,  H04L27/0006 ,  H04W24/08 ,  H04W72/042

Abstract: Techniques are described for wireless communication. A first method includes identifying a configuration of a downlink subframe in a shared radio frequency spectrum band, and generating, based at least in part on the configuration of the downlink subframe, a cell-specific reference signal (CRS) for the downlink subframe. A second method includes dynamically determining a presence of a CRS in a downlink subframe in a shared radio frequency spectrum band, and performing at least one operation during the downlink subframe in response to the dynamic determination.

公开(公告)号：US10057779B2

公开(公告)日：2018-08-21

申请号：US14660717

申请日：2015-03-17

Applicant: QUALCOMM Incorporated

Inventor： Yongbin Wei ,  Durga Prasad Malladi ,  Aleksandar Damnjanovic ,  Naga Bhushan ,  Wanshi Chen ,  Tao Luo ,  Peter Gaal ,  Ravi Teja Sukhavasi

IPC: H04W74/08 ,  H04W16/14 ,  H04J3/16 ,  H04W24/10 ,  H04W72/04

CPC classification number: H04W16/14 ,  H04J3/1694 ,  H04W24/10 ,  H04W72/0453 ,  H04W74/0808

Abstract: Techniques are described for wireless communication. A method for wireless communication includes identifying a frame structure for transmissions using an unlicensed radio frequency spectrum band, the frame structure including at least two special subframes; and performing a procedure to gain access to the unlicensed radio frequency spectrum band during at least a portion of at least one of the at least two special subframes.