公开(公告)号：US10772099B2

公开(公告)日：2020-09-08

申请号：US16276137

申请日：2019-02-14

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  Bin Tian ,  Sameer Vermani ,  Lin Yang ,  Jialing Li Chen ,  Youhan Kim

IPC: H04W4/00 ,  H04W72/04 ,  H04B7/06 ,  H04W72/08 ,  H04L5/00 ,  H04B7/024

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for partial bandwidth feedback based on punctured sounding. Punctured sounding is used by a transmitting device that omits portions of a channel bandwidth based on a puncturing pattern. The puncturing pattern may be based on an exclusion bandwidth zone to avoid transmissions on portions of channels that may interfere with an incumbent system transmission. The puncturing pattern may be indicated in a null data packet announcement (NDPA) to inform the receiving device that a subsequent NDP will be punctured. The receiving device may determine the feedback by measuring the portions of the NDP that are not punctured. Beamforming may be enhanced by using punctured sounding between two beamforming endpoints.

公开(公告)号：US20200076552A1

公开(公告)日：2020-03-05

申请号：US16559605

申请日：2019-09-03

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Sameer Vermani ,  Bin Tian ,  Stephen Jay Shellhammer ,  Lochan Verma ,  Lin Yang ,  Jialing Li Chen

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

Abstract: Methods, systems, and devices for wireless communications are described. An access point (AP) may transmit, to a second AP and during a first portion of a transmission opportunity (TxOP), a request to participate in a multi-user (MU) transmission. The AP may receive, from the second AP and during the first portion of the TxOP, an indication of intent to participate in the MU transmission during the second portion of the TxOP, the indication of intent including a resource request of the second AP for participation in the MU transmission. The AP may transmit, during an initial period of the second portion of the TxOP, a trigger signal to the second AP indicating a set of one or more resources for the second AP during the MU transmission. The AP may participate, in conjunction with the second AP and during the second portion of the TxOP, in the MU transmission.

公开(公告)号：US20190342064A1

公开(公告)日：2019-11-07

申请号：US16390702

申请日：2019-04-22

Applicant: QUALCOMM Incorporated

Inventor： Bin Tian ,  Sameer Vermani ,  Lin Yang ,  Lochan Verma ,  George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil

IPC: H04L5/14 ,  H04L5/00 ,  H04B14/02 ,  H04B1/56 ,  H04B7/0413 ,  H04B7/06

Abstract: Aspects of the present disclosure relate to a wireless device including one or more processors and a memory storing processor-readable instructions that, when executed by the one or more processors, causes the wireless device to perform operations. The operations include receiving a first message indicating a reuse transmission opportunity associated with a downlink transmission from a first device to a second device. The operations further include determining to participate in the reuse transmission opportunity based at least in part on the downlink transmission. The operations further include, during the reuse transmission opportunity, transmitting uplink communications to the first device concurrently with the downlink transmission from the first device to the second device in the same frequency channel.

公开(公告)号：US10470174B2

公开(公告)日：2019-11-05

申请号：US16244036

申请日：2019-01-09

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  Sameer Vermani ,  Bin Tian ,  Lin Yang ,  Raja Banerjea ,  Alfred Asterjadhi

IPC: H04W72/04 ,  H04W52/24 ,  H04W74/04 ,  H04L5/00 ,  H04L27/26 ,  H04W16/14 ,  H04W52/14 ,  H04W74/00 ,  H04W84/12

Abstract: The present disclosure provides various aspects related to techniques for generating trigger frames, at an access point (AP), that reduce the overhead associated with triggering an uplink transmission from the wireless station (STA). Features of the present disclosure achieve this by, for example, utilizing a single per-user information field of the trigger to signal a plurality of random access resource units that may be allocated to the one or more STAs in the network. Such a technique is an improvement over the conventional system that require each random access resource unit to be signaled separately in a separate per-user information field (thus increasing the overhead). Additionally, aspects of the present disclosure allow the AP to effectively signal to the STA whether the one or more resources allocated to the at least one STA are a single user resource unit allocation or a multi-user resource unit allocation.

公开(公告)号：US20190289612A1

公开(公告)日：2019-09-19

申请号：US16354086

申请日：2019-03-14

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Lin Yang ,  Bin Tian ,  Sameer Vermani ,  Lochan Verma

IPC: H04W72/08 ,  H04W52/18

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for communicating over a wireless communication network. A wireless communication device may be configured to generate and transmit a message according to a tone plan for transmission to multiple destination devices within one of a 240 or 320 MHz channel bandwidth. The message may include a short training field (STF) and a long training field (LTF). The STF may be used by a receiver to adjust an automatic gain control (AGC) function. The LTF may be used for channel estimation. In some implementations, the STF may have a data tone plan formed from a concatenated sequence of sub-STFs. A phase rotation applied to at least one of the sub-STFs of the concatenated sequence may reduce a peak-to-average-power ratio (PAPR) of the message as compared to a non- phase rotated concatenated sequence of sub-STFs.

公开(公告)号：US20190288895A1

公开(公告)日：2019-09-19

申请号：US16354052

申请日：2019-03-14

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Lin Yang ,  Bin Tian ,  Sameer Vermani ,  Lochan Verma

IPC: H04L27/26 ,  H04L5/00

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for communicating over a wireless communication network. A wireless communication device may be configured to generate and transmit a message according to a tone plan for transmission to multiple destination devices within one of a 240 or 320 MHz channel bandwidth. The message may include a short training field (STF) and a long training field (LTF). The STF may be used by a receiver to adjust an automatic gain control (AGC) function. The LTF may be used for channel estimation. In some implementations, the STF may have a data tone plan formed from a concatenated sequence of sub-STFs. A phase rotation applied to at least one of the sub-STFs of the concatenated sequence may reduce a peak-to-average-power ratio (PAPR) of the message as compared to a non-phase rotated concatenated sequence of sub-STFs.

公开(公告)号：US10416949B2

公开(公告)日：2019-09-17

申请号：US14863853

申请日：2015-09-24

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  Mina Ayman Saleh Yanni Makar ,  Hongyu Jiang ,  Xiaodong Wang ,  Vijayalakshmi Raveendran

IPC: G06T15/00 ,  G06F3/14 ,  G06T1/20

Abstract: Various aspects of the present disclosure provide for detecting a condition indicating that a graphics processing unit (GPU) is in an unstable state while receiving GPU commands in a first wireless display mode, transmitting a GPU refresh request message and switching from the first wireless display mode to a second wireless display mode in response to detecting the condition, receiving data sufficient to reset the GPU from the unstable state to a stable state at a random access point (RAP) in a trace of the GPU commands, and switching from the second wireless display mode to the first wireless display mode after receiving the data. The GPU refresh request message may include information requesting the data sufficient to reset the GPU at an upcoming RAP in the trace of the GPU commands. Various other aspects are also provided throughout the present disclosure.

公开(公告)号：US20190281614A1

公开(公告)日：2019-09-12

申请号：US16275315

申请日：2019-02-13

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Lin Yang ,  Bin Tian ,  Sameer Vermani ,  Lochan Verma

IPC: H04W72/12 ,  H04W72/04

Abstract: Methods and apparatuses are disclosed for communicating over a wireless communication network. In one aspect, an apparatus can include a memory that stores instructions, a processor, and a segment parser. The memory can be configured to store instructions. The processing system is configured to execute the instructions to generate a message according to a tone plan for transmission to one or more destination devices within one of a 240 or 320 MHz total channel bandwidth. The processing system is further configured to provide the message for transmission over the 240 or 320 MHz total channel bandwidth, where the message is encoded for transmission by at least one of a binary convolutional coded (BCC) interleaver or a low density parity check (LDDC) tone mapper. The segment parser is configured to segment the total channel bandwidth into a plurality of segments of equal or unequal sub-band bandwidths or number of data tones.

公开(公告)号：US20190199491A1

公开(公告)日：2019-06-27

申请号：US16219456

申请日：2018-12-13

Applicant: QUALCOMM Incorporated

Inventor： Lochan Verma ,  Bin Tian ,  Sameer Vermani ,  Lin Yang ,  Jialing Li Chen

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

CPC classification number: H04L5/0046 ,  H04L1/0069 ,  H04L5/0032 ,  H04L5/0041 ,  H04W16/14 ,  H04W72/0453 ,  H04W74/08

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for wireless communication with partial channel puncturing. Using partial channel puncturing, a wireless local area network (WLAN) device may modulate data on a first portion of a wireless channel while refraining from modulating data on a second portion of the wireless channel. The partial channel puncturing can be used with an exclusion bandwidth zone defined for the WLAN. The exclusion bandwidth zone prevents transmissions on portions of channels so that the WLAN transmissions do not interfere with an incumbent system transmission in the exclusion bandwidth zone.

公开(公告)号：US20190115970A1

公开(公告)日：2019-04-18

申请号：US16154574

申请日：2018-10-08

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Bin Tian ,  Jialing Li Chen ,  Lin Yang ,  Lochan Verma

IPC: H04B7/08 ,  H04J11/00 ,  H04L5/00

Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for managing high volumes of space-time-streams in Wi-Fi systems. An access point (AP) may transmit packets including long training field (LTF) sections using a number of space-time-streams greater than eight. Mobile stations (STAs) in the system may or may not be capable of processing this number of streams. The AP may modulate an LTF section using a matrix with dimensions smaller than the number of streams by using tone-interleaving or by performing modulation with separate matrices in time and frequency. In some other implementations, the AP may split the antennas for transmission into groups, each group transmitting either different packets in a subset of streams or a same packet in a subset of tones. In further implementations, the AP may combine multiple space-time-streams into a super stream that supports reception at different types of STAs.