公开(公告)号：US09900199B2

公开(公告)日：2018-02-20

申请号：US14702558

申请日：2015-05-01

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Bin Tian ,  Rahul Tandra ,  Dung Ngoc Doan

IPC: H04L27/26 ,  H04L1/06 ,  H04L5/00 ,  H04L25/02 ,  H04B17/309

CPC classification number: H04L27/2613 ,  H04B17/309 ,  H04L1/0625 ,  H04L1/0681 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2607 ,  H04L27/2611

Abstract: Methods, devices, and computer program products for improving training field design in packets with increased symbol durations are disclosed. In one aspect, a method of transmitting a packet on a wireless communication network is disclosed. The method includes transmitting a preamble of the packet over one or more space-time-streams, the preamble including one or more training fields configured to be used for channel estimation, the one or more training fields each comprising one or more symbols of a first symbol duration. The method further includes transmitting a payload of the packet over the one or more space-time-streams, the payload comprising one or more symbols of a second symbol duration, the second symbol duration greater than the first symbol duration.

公开(公告)号：US09860851B2

公开(公告)日：2018-01-02

申请号：US13782866

申请日：2013-03-01

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  Gwendolyn Denise Barriac ,  Simone Merlin ,  Sameer Vermani ,  Rahul Tandra ,  Bin Tian ,  Hemanth Sampath ,  Vincent Knowles Jones, IV

IPC: H04W4/00 ,  H04W52/24 ,  H04W16/10

CPC classification number: H04W52/243 ,  H04W16/10 ,  H04W84/12

Abstract: An apparatus and method for managing interference in a transmission medium are disclosed. A apparatus and method may be used to detect a condition experienced by only one of first and second wireless nodes, and modify an operational parameter of one of the first and second wireless nodes, if the condition is detected, such that both the first and second wireless nodes experience the condition or neither the first and second wireless nodes experience the condition.

公开(公告)号：US09839024B2

公开(公告)日：2017-12-05

申请号：US15184889

申请日：2016-06-16

Applicant: QUALCOMM Incorporated

Inventor： Hemanth Sampath ,  Bin Tian ,  Rahul Tandra ,  Gwendolyn Denise Barriac ,  Yan Zhou ,  Sameer Vermani ,  Simone Merlin

IPC: H04W72/04 ,  H04W16/14 ,  H04W74/08 ,  H04W16/10 ,  H04W72/08 ,  H04W84/12 ,  H04W88/08

CPC classification number: H04W72/042 ,  H04W16/10 ,  H04W16/14 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/082 ,  H04W74/0816 ,  H04W74/085 ,  H04W84/12 ,  H04W88/08

Abstract: Systems, methods, and devices for transmitting data are described herein. In some aspects, a method comprises generating a first message. The first message may comprise an allocation of a first station to a first frequency channel and a second station to a second frequency channel. The method further comprises transmitting the first message over the first frequency channel and the second frequency channel. The method further comprises transmitting, after transmission of the first message, a second message to the first station using the first frequency channel. The method further comprises transmitting, after transmission of the first message, a third message to the second station using the second frequency channel.

公开(公告)号：US20170181130A1

公开(公告)日：2017-06-22

申请号：US15387364

申请日：2016-12-21

Applicant: QUALCOMM Incorporated

Inventor： Arjun Bharadwaj ,  Bin Tian ,  Lochan Verma ,  Sameer Vermani

IPC: H04W72/04 ,  H04L12/24 ,  H04B7/0452

CPC classification number: H04W72/042 ,  H04B7/0452 ,  H04L5/0053 ,  H04L41/08 ,  H04W72/0453 ,  H04W72/12 ,  H04W74/002 ,  H04W84/12

Abstract: Methods, apparatuses, and computer readable media for resource allocation signaling in a high efficiency wireless local area network (WLAN) are disclosed. A receiver may receive, at a first station, a transmission frame that includes a WLAN signaling field decodable by a plurality of stations. The receiver may identify, in a station-specific portion of the WLAN signaling field, an order for a plurality of station-specific information blocks associated with the plurality of stations. The receiver may determine a number of spatial streams allocated to the first station based at least in part on the identified order for the plurality of station-specific information blocks.

公开(公告)号：US20170181129A1

公开(公告)日：2017-06-22

申请号：US15387279

申请日：2016-12-21

Applicant: QUALCOMM Incorporated

Inventor： Arjun Bharadwaj ,  Bin Tian ,  Lochan Verma ,  Sameer Vermani

IPC: H04W72/04 ,  H04B7/0452

CPC classification number: H04W72/042 ,  H04B7/0452 ,  H04L5/0053 ,  H04L41/08 ,  H04W72/0453 ,  H04W72/12 ,  H04W74/002 ,  H04W84/12

Abstract: Methods, apparatuses, and computer readable media for resource allocation signaling in a high efficiency wireless local area network (WLAN) are disclosed. A transmitter may identify a first indicator identifying a number of multi-user multiple-input/multiple-output (MU-MIMO) stations associated with a first resource unit (RU) in a first content channel of a transmission frame. The transmitter may generate a first common portion of a WLAN signaling field in the first content channel. The first common portion may include the first indicator. The transmitter may identify a second indicator identifying an absence of MU-MIMO stations associated with a second RU in a second content channel of the transmission frame. The transmitter may generate a second common portion of the WLAN signaling field in the second content channel. The second common portion may include the second indicator. The transmitter may transmit the transmission frame including the WLAN signaling field.

公开(公告)号：US20170135050A1

公开(公告)日：2017-05-11

申请号：US15413016

申请日：2017-01-23

Applicant: QUALCOMM Incorporated

Inventor： Santosh ABRAHAM ,  Sameer Vermani ,  Hemanth Sampath ,  Stephen Shellhammer ,  Rahul Tandra

IPC: H04W52/32 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04W52/04 ,  H04B7/12 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0027 ,  H04L1/06 ,  H04W16/14 ,  H04W52/325 ,  H04W52/367 ,  H04W74/0816

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for managing transmit power in a television white space (TVWS) network. One example method generally includes transmitting a sequence of request-to-send (RTS) messages at different transmit power levels to an apparatus and determining if a clear-to-send (CTS) message was received in response to at least one of the RTS messages corresponding to a particular one of the transmit power levels. Another example method generally includes receiving, at a first apparatus from a second apparatus, a packet that cannot be decoded by the first apparatus; determining at least one of a time or a duration corresponding to the packet; transmitting a query with an indication of the at least one of the time or the duration; and receiving a message from the second apparatus in response to the query, the message identifying the second apparatus as a source of the packet.

公开(公告)号：US09648620B2

公开(公告)日：2017-05-09

申请号：US14467779

申请日：2014-08-25

Applicant: QUALCOMM Incorporated

Inventor： Rahul Tandra ,  Sameer Vermani ,  Bin Tian ,  Albert Van Zelst

IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04W72/0453 ,  H04J11/0023 ,  H04J2011/0009 ,  H04L5/0037 ,  H04L27/2613

Abstract: A method includes generating a data packet at an access point. The data packet is to be communicated using a waveform that includes a first set of tones that is allocated to a first destination device and a second set of tones that is allocated to a second destination device. The first set of tones is non-overlapping with respect to the second set of tones, and each tone of the first set of tones and each tone of the second set of tones is an orthogonal frequency-division multiple access (OFDMA) tone. The method also includes transmitting the data packet to the first destination device via an institute of electrical and electronics engineers (IEEE) 802.11 wireless network and transmitting the data packet to the second destination device via the IEEE 802.11 wireless network.

公开(公告)号：US09615397B2

公开(公告)日：2017-04-04

申请号：US13677382

申请日：2012-11-15

Applicant: QUALCOMM Incorporated

Inventor： Santosh Paul Abraham ,  Sameer Vermani ,  Maarten Menzo Wentink ,  Rahul Tandra ,  Hemanth Sampath

IPC: H04W84/12 ,  H04W72/12 ,  H04B7/0452 ,  H04W4/08

CPC classification number: H04W72/005 ,  H04B7/0452 ,  H04W4/08 ,  H04W8/186 ,  H04W72/121 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/444

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for efficiently managing groups of stations (STAs) receiving simultaneous transmissions in a multiuser multiple-input multiple-output (MU-MIMO) scheme. One example method generally includes; for a first apparatus in a number of groups of apparatuses, allocating a first spatial stream position for each of at least one first group in the number of the groups; and transmitting a first unicast message to the first apparatus, wherein the first unicast message comprises an indication of the allocated spatial stream position for each of the at least one first group and, for each group in the number of the groups, an indication of a membership status, in the group, of the first apparatus.

公开(公告)号：US09608796B2

公开(公告)日：2017-03-28

申请号：US14265269

申请日：2014-04-29

Applicant: QUALCOMM Incorporated

Inventor： Simone Merlin ,  Gwendolyn Denise Barriac ,  Hemanth Sampath ,  Sameer Vermani ,  Bin Tian ,  Yan Zhou ,  Rahul Tandra

IPC: H04L5/00 ,  H04B7/26 ,  H04J1/02 ,  H04W52/02 ,  H04J1/14 ,  H04L1/18 ,  H04W74/02 ,  H04W74/08 ,  H04L1/16 ,  H04L1/00 ,  H04W74/00

CPC classification number: H04B7/2621 ,  H04B7/26 ,  H04J1/02 ,  H04J1/14 ,  H04L1/1685 ,  H04L1/18 ,  H04L1/1861 ,  H04L5/0005 ,  H04L5/0007 ,  H04L5/0012 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0055 ,  H04L5/006 ,  H04L5/0069 ,  H04L5/0073 ,  H04L5/0094 ,  H04L2001/0093 ,  H04W52/0212 ,  H04W52/0219 ,  H04W74/002 ,  H04W74/02 ,  H04W74/0816 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/142 ,  Y02D70/449

Abstract: Systems, methods, and devices for high-efficiency wireless frequency division multiplexing are provided. A method includes receiving, at a first wireless device, a reference signal from an associated access point, the reference signal indicative of a time of joint transmission with at least a second wireless device. The method further includes transmitting a first communication to the access point based on the reference signal, the communication utilizing a first subset of wireless frequencies available for use. The first communication is concurrent with a second communication, from the second wireless device, utilizing a second subset of wireless frequencies, the second subset excluding the first subset.

公开(公告)号：US20170048823A1

公开(公告)日：2017-02-16

申请号：US15232711

申请日：2016-08-09

Applicant: QUALCOMM Incorporated

Inventor： Arjun Bharadwaj ,  Bin Tian ,  Sameer Vermani

IPC: H04W72/04 ,  H04B7/04 ,  H04L27/26

CPC classification number: H04W72/04 ,  H04B7/0452 ,  H04L27/2608 ,  H04W72/042 ,  H04W84/12

Abstract: A device may signal a resource allocation scheme in a high efficiency wireless local area network (WLAN) preamble. In one example, a high efficiency (HE) WLAN signaling field is used to signal a resource allocation pattern to multiple devices. The HE WLAN signaling field includes a common user field that is decodable by the multiple devices and includes a resource allocation field. The resource allocation indicates resource unit distributions to the multiple devices and indicates which resource units in a multi-user PPDU correspond to multi-user MIMO transmissions and which resource units correspond to OFDMA single-user transmissions. The HE WLAN signaling field also includes dedicated user fields that are assigned to certain devices. The order of the dedicated user fields corresponds to the allocated resource units. The HE WLAN signaling field is transmitted with a WLAN preamble to the multiple devices.

Abstract translation: 设备可以在高效无线局域网（WLAN）前导码中发信号通知资源分配方案。 在一个示例中，高效率（HE）WLAN信令字段用于向多个设备发送资源分配模式。 HE WLAN信令字段包括可由多个设备解码的公共用户字段，并且包括资源分配字段。 资源分配指示到多个设备的资源单元分布，并且指示多用户PPDU中的哪些资源单元对应于多用户MIMO传输，哪些资源单元对应于OFDMA单用户传输。 HE WLAN信令字段还包括分配给某些设备的专用用户字段。 专用用户字段的顺序对应于所分配的资源单元。 通过WLAN前导码向多个设备发送HE WLAN信令字段。