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：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.

公开(公告)号：US10237839B2

公开(公告)日：2019-03-19

申请号：US15182551

申请日：2016-06-14

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Tao Tian

IPC: H04J3/06 ,  H04W56/00 ,  H04W72/04 ,  H04B7/0456 ,  H04B7/0452 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26

Abstract: Aspects of the present disclosure provide techniques for phase tracking in wireless communications using frames with some portions that use relatively long symbol durations.

公开(公告)号：US20190081664A1

公开(公告)日：2019-03-14

申请号：US16125654

申请日：2018-09-07

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/0417 ,  H04B7/0456

CPC classification number: H04B7/0417 ,  H04B7/024 ,  H04B7/0456 ,  H04L5/0035

Abstract: One aspect includes a method of establishing, via a first access point, a distributed MIMO joint transmission opportunity with one or more second access points to one or more stations. The method comprises generating, via a processor, a first message for transmission to the stations and the second access points. The first message indicates a null data packet transmission and the stations configured to receive a stream during the joint transmission opportunity. The method also comprises transmitting the first message to the second access points and the stations. The method further comprises generating, via the processor, a reference phase signal for transmission to the second access points.

公开(公告)号：US20190059060A1

公开(公告)日：2019-02-21

申请号：US16040367

申请日：2018-07-19

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Lin Yang ,  Bin Tian

IPC: H04W52/32 ,  H04W52/36 ,  H04W52/50

Abstract: This disclosure provides systems, methods and apparatuses for determining input power backoff (IBO) settings used to transmit wireless signals. In some implementations, a first wireless device may negotiate a mutually compatible set of IBO settings with a second wireless device, may receive a wireless signal from the second wireless device, and may determine the actual IBO value used by the second wireless device to transmit the wireless signal based at least in part on the negotiated set of IBO settings. The first wireless device may also receive an indication of the changed set of IBO settings from the second wireless device, and may update the set of IBO settings stored in the first wireless device based on the received indication.