公开(公告)号：PH12015502267B1

公开(公告)日：2016-02-01

申请号：PH12015502267

申请日：2015-09-30

Applicant: QUALCOMM INC

Inventor： VERMANI SAMEER ,  TANDRA RAHUL ,  MERLIN SIMONE ,  SAMPATH HEMANTH

IPC: H04L27/26 ,  H04W56/00

Abstract: Systems, methods, and devices for wireless communication are disclosed herein. One aspect of the disclosure provides a method of transmitting to two or more wireless communication devices. The method includes transmitting a first section of a preamble according to a first format, the first section of the preamble containing information informing devices compatible with the first format to defer to the transmission, transmitting a second section of the preamble according to a second format, the second section of the preamble containing tone allocation information, the tone allocation information identifying two or more wireless communication devices; and transmitting data to the two or more wireless communication devices simultaneously, the data contained on two or more sub-bands.

公开(公告)号：PH12015502219B1

公开(公告)日：2016-02-01

申请号：PH12015502219

申请日：2015-09-23

Applicant: QUALCOMM INC

Inventor： MERLIN SIMONE ,  BARRIAC GWENDOLYN DENISE ,  SAMPATH HEMANTH ,  VERMANI SAMEER ,  TIAN BIN ,  ZHOU YAN ,  TANDRA RAHUL

IPC: H04B7/26 ,  H04L5/00

Abstract: Systems, methods, and devices for high-efficiency wireless frequency division multiplexing are provided. A method includes exchanging, at an access point, at least one frame reserving a wireless medium with at least one of a first and second wireless device. The method further includes receiving a first communication on a first set of wireless frequencies from the first wireless device. The method further includes receiving a second communication, at least partially concurrent with the first communication, on a second set of wireless frequencies from the second wireless device. The method further includes transmitting at least one acknowledgment of the first and second communication. The first set and the second set are mutually exclusive subsets of a set of wireless frequencies available for use by both the first and second wireless device.

公开(公告)号：SG11201506975WA

公开(公告)日：2015-10-29

申请号：SG11201506975W

申请日：2014-04-11

Applicant: QUALCOMM INC

Inventor： VERMANI SAMEER ,  TANDRA RAHUL ,  MERLIN SIMONE ,  SAMPATH HEMANTH

IPC: H04W56/00 ,  H04L27/26

Abstract: Systems, methods, and devices for wireless communication are disclosed herein. One aspect of the disclosure provides a method of transmitting to two or more wireless communication devices. The method includes transmitting a first section of a preamble according to a first format, the first section of the preamble containing information informing devices compatible with the first format to defer to the transmission, transmitting a second section of the preamble according to a second format, the second section of the preamble containing tone allocation information, the tone allocation information identifying two or more wireless communication devices; and transmitting data to the two or more wireless communication devices simultaneously, the data contained on two or more sub-bands.

公开(公告)号：CA2918842A1

公开(公告)日：2015-03-05

申请号：CA2918842

申请日：2014-08-26

Applicant: QUALCOMM INC

Inventor： TANDRA RAHUL ,  VERMANI SAMEER ,  TIAN BIN ,  VAN ZELST ALBERT

IPC: H04L5/00

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：WO2014179477A3

公开(公告)日：2015-01-08

申请号：PCT/US2014036198

申请日：2014-04-30

Applicant: QUALCOMM INC

Inventor： SAMPATH HEMANTH ,  TIAN BIN ,  TANDRA RAHUL ,  BARRIAC GWENDOLYN DENISE ,  ZHOU YAN ,  VERMANI SAMEER ,  MERLIN SIMONE

IPC: H04W76/02

CPC classification number: H04L5/0073 ,  H04L5/0037 ,  H04L5/0094 ,  H04W72/0406 ,  H04W72/0453 ,  H04W76/023

Abstract: Systems, methods, and devices for concurrently allowing station-to- station transmissions and access point-to-station transmissions are described herein. A station requests an Access Point for an available channel frequency to coduct station-tostation communications. The AP replies with a coordination message indicating that two distinct channel frequencies are allowed for station-to-station communications and for AP-to-station communcations. AP-to-station and station-to- station communications may therefore coexist.

Abstract translation: 这里描述了用于同时允许站间站传输和接入点到站传输的系统，方法和设备。 A站请求可用信道频率的接入点来编码站到站通信。 AP用协调消息进行回复，表示允许两个不同的信道频率用于站间通信和AP到站的通信。 因此，AP到站和站对站通信可能共存。

公开(公告)号：WO2012112801A3

公开(公告)日：2012-12-27

申请号：PCT/US2012025495

申请日：2012-02-16

Applicant: QUALCOMM INC ,  ABRAHAM SANTOSH PAUL ,  VERMANI SAMEER ,  SAMPATH HEMANTH ,  SHELLHAMMER STEPHEN J ,  TANDRA RAHUL

Inventor： ABRAHAM SANTOSH PAUL ,  VERMANI SAMEER ,  SAMPATH HEMANTH ,  SHELLHAMMER STEPHEN J ,  TANDRA RAHUL

IPC: H04W52/08 ,  H04L1/00 ,  H04W52/24 ,  H04W52/36 ,  H04W52/50 ,  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.

Abstract translation: 本公开的某些方面提供了用于管理电视白色空间（TVWS）网络中的发射功率的技术和装置。 一个示例性方法通常包括以不同的发射功率电平发送请求发送（RTS）消息序列到设备，并且响应于RTS中的至少一个来确定是否接收到清除发送（CTS）消息 消息对应于特定的一个发射功率电平。 另一示例方法一般包括在第一装置处从第二装置接收不能被第一装置解码的分组; 确定对应于所述分组的时间或持续时间中的至少一个; 传送具有所述时间或所述持续时间中的所述至少一者的指示的查询; 以及响应于所述查询从所述第二装置接收消息，所述消息将所述第二装置标识为所述分组的源。

公开(公告)号：WO2011163247A3

公开(公告)日：2012-05-10

申请号：PCT/US2011041272

申请日：2011-06-21

Applicant: QUALCOMM INC ,  VAN NEE DIDIER JOHANNES RICHARD ,  SAMPATH HEMANTH ,  VERMANI SAMEER ,  TANDRA RAHUL ,  VAN ZELST ALBERT ,  JONES VINCENT KNOWLES

Inventor： VAN NEE DIDIER JOHANNES RICHARD ,  SAMPATH HEMANTH ,  VERMANI SAMEER ,  TANDRA RAHUL ,  VAN ZELST ALBERT ,  JONES VINCENT KNOWLES

IPC: H04L25/02 ,  H04B7/06

CPC classification number: H04L25/0212 ,  H04B7/0626 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0228

Abstract: In a downlink multi-user multiple input multiple output (DL MU-MIMO) system, channel state information (CSI) feedback duration may strongly affect media access control (MAC) efficiency. While a time domain compression may give a significant reduction in feedback duration, the time domain compression may have complexity issues at the station (STA). In particular, for time domain compression, a large complex matrix multiplication may be required at the client to estimate a cyclic prefix (CP) length impulse response, which best models the frequency response of the channel. Embodiments of the invention comprise a hybrid scheme that may reduce the above complexity while maintaining significant compression gains.

Abstract translation: 在下行链路多用户多输入多输出（DL MU-MIMO）系统中，信道状态信息（CSI）反馈持续时间可能强烈地影响媒体访问控制（MAC）效率。 虽然时域压缩可以显着减少反馈持续时间，但是时域压缩可能在站（STA）处具有复杂性问题。 特别地，对于时域压缩，在客户端可能需要大的复矩阵乘法来估计循环前缀（CP）长度脉冲响应，其对信道的频率响应进行最佳建模。 本发明的实施例包括可以在保持显着的压缩增益的同时降低上述复杂性的混合方案。