公开(公告)号：US20160255644A1

公开(公告)日：2016-09-01

申请号：US15051502

申请日：2016-02-23

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Hemanth Sampath

IPC: H04W72/12

CPC classification number: H04W72/1215 ,  H04W74/0816 ,  H04W84/12

Abstract: Certain aspects of the present disclosure relate to a methods and apparatus for wireless communication. In one aspect, a method of communication over a wireless medium includes transmitting, from a first wireless device, a first communication reserving access to the wireless medium during a first time period. The method further includes transmitting or receiving a long term evolution unlicensed (LTE-U) transmission during the first time period. The method further includes detecting, prior to the first time period, an interfering WLAN transmission that will result in its transmitter and recipients not detecting the first communication. The method further includes transmitting, after the interfering WLAN transmission, a second communication reserving access to the wireless medium during a second time period at least partially overlapping the first.

Abstract translation: 本公开的某些方面涉及用于无线通信的方法和装置。 在一个方面，一种通过无线介质进行通信的方法包括：在第一时间段期间从第一无线设备发送保留对无线介质的访问的第一通信。 该方法还包括在第一时间段期间发送或接收长期进化未许可（LTE-U）传输。 该方法还包括在第一时间段之前检测将导致其发射机和接收者未检测到第一通信的干扰WLAN传输。 该方法还包括在干扰WLAN传输之后，在与第一个至少部分重叠的第二时间段期间，发送保留对无线介质的访问的第二通信。

公开(公告)号：US20160192301A1

公开(公告)日：2016-06-30

申请号：US14955122

申请日：2015-12-01

Applicant: Qualcomm Incorporated

Inventor： Hemanth Sampath ,  Simone Merlin ,  Santosh Paul Abraham

IPC: H04W56/00

CPC classification number: H04W56/00 ,  H04W48/08 ,  H04W84/12

Abstract: A system and method for wireless devices to efficiently receive communications by transmitting and receiving specialized beacon messages. Particularly, a wireless device may await reception of a synchronizing beacon message from a transmitting device. A relative position identifier within the synchronizing beacon message may then allow the wireless device to anticipate future beacon message transmissions and to synchronize its reception pattern with the transmitter. In this manner the wireless device need only receive and decode beacon messages germane to its operation.

公开(公告)号：US09344238B2

公开(公告)日：2016-05-17

申请号：US14250251

申请日：2014-04-10

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Rahul Tandra ,  Simone Merlin ,  Hemanth Sampath

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04W56/00

CPC classification number: H04L5/0044 ,  H04L5/0094 ,  H04L27/261 ,  H04L27/2613 ,  H04W56/0035

Abstract: Systems, methods, and devices for wireless communication are disclosed herein. One aspect of the disclosure provides a method of transmitting on a wireless communication network. The method includes transmitting to one or more first devices in a first portion of a bandwidth, the one or more first devices having a first set of capabilities, simultaneously transmitting to one or more second devices in a second portion of the bandwidth, the one or more second devices having a second set of capabilities, and wherein the transmission comprises a preamble which includes an indication for devices with the second set of capabilities to locate a frequency band in the bandwidth for symbols containing a set of transmission parameters for devices with the second set of capabilities, and where the indication is sent so as to have no substantial impact on a preamble decoding of devices with the first set of capabilities.

Abstract translation: 本文公开了用于无线通信的系统，方法和设备。 本公开的一个方面提供了一种在无线通信网络上进行发送的方法。 所述方法包括向带宽的第一部分中的一个或多个第一设备发送，所述一个或多个第一设备具有第一组能力，同时向所述带宽的第二部分中的一个或多个第二设备发送所述一个或多个 具有第二组能力的更多第二设备，并且其中所述传输包括前导码，其包括具有所述第二组能力的设备的指示，以在所述带宽中定位用于具有所述第二设备的设备的传输参数集合的符号的频带 一组功能，以及发送指示的位置，对具有第一组能力的设备的前导码解码没有实质影响。

公开(公告)号：US20160037553A1

公开(公告)日：2016-02-04

申请号：US14719084

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

Inventor： Rashid Ahmed Akbar Attar ,  Linhai He ,  Bibhu Prasad Mohanty ,  Hemanth Sampath

IPC: H04W72/14 ,  H04W72/00

CPC classification number: H04W74/04 ,  H04W74/06

Abstract: A method and apparatus for managing access to a wireless medium by one or more stations (STAs) in a wireless network. A device determines a first transmit opportunity for a first STA of the one or more STAs in the wireless network. The device enables the first STA to access the wireless medium for a duration of the first transmit opportunity by broadcasting a first grant message to the one or more STAs in the wireless network. The first grant message indicates allocation of the first transmit opportunity to the first STA. The device may selectively adjust the duration of the first transmit opportunity based at least in part on one or more properties of the wireless network.

Abstract translation: 一种用于管理无线网络中的一个或多个站（STA）对无线介质的访问的方法和装置。 设备确定无线网络中的一个或多个STA的第一STA的第一发送机会。 该设备使得第一STA能够通过向无线网络中的一个或多个STA广播第一准许消息来在第一传送机会的持续时间内接入无线介质。 第一授权消息指示将第一发送机会分配给第一STA。 该设备可以至少部分地基于无线网络的一个或多个属性来选择性地调整第一传送机会的持续时间。

公开(公告)号：US20150341955A1

公开(公告)日：2015-11-26

申请号：US14819102

申请日：2015-08-05

Applicant: QUALCOMM Incorporated

Inventor： Hemanth Sampath ,  Vincent Knowles Jones ,  Maarten Menzo Wentink ,  Santosh P. Abraham

IPC: H04W72/12 ,  H04W52/14 ,  H04B7/04

CPC classification number: H04W72/1284 ,  H04B7/0452 ,  H04W52/146 ,  H04W72/121

Abstract: Certain aspects of the present disclosure relate to a method for enhanced multi-user multiple input multiple output (MU-MIMO) wireless communications. The proposed method may reduce and/or eliminate stringent frequency and time synchronization requirements for stations (STAs) to participate in a downlink MU-MIMO transaction by utilizing deterministic scheduling.

Abstract translation: 本公开的某些方面涉及用于增强的多用户多输入多输出（MU-MIMO）无线通信的方法。 所提出的方法可以通过利用确定性调度来减少和/或消除站（STA）对参与下行MU-MIMO事务的严格的频率和时间同步要求。

公开(公告)号：US20150333812A1

公开(公告)日：2015-11-19

申请号：US14805773

申请日：2015-07-22

Applicant: QUALCOMM Incorporated

Inventor： Gregory Breit ,  Santosh Abraham ,  Sameer Vermani ,  Hemanth Sampath ,  Vincent Knowles Jones, IV

IPC: H04B7/06 ,  H04B7/04 ,  H04W72/04

CPC classification number: H04B7/0626 ,  H04B7/0413 ,  H04L1/0027 ,  H04L1/003 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0222 ,  H04L25/0228 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

Abstract: Certain aspects of the present disclosure relate to techniques for achieving adaptive channel state information (CSI) feedback rate in multi-user communication systems. A rate by which CSI feedback can be transmitted from each user station of a wireless system to a serving access point may be adjusted based on evolution of a channel between that user station and the access point.

Abstract translation: 本公开的某些方面涉及用于在多用户通信系统中实现自适应信道状态信息（CSI）反馈速率的技术。 基于无线系统的每个用户站向服务接入点发送CSI反馈的速率可以基于该用户站与接入点之间的信道的演进来调整。

公开(公告)号：US20150264689A1

公开(公告)日：2015-09-17

申请号：US14658014

申请日：2015-03-13

Applicant: QUALCOMM Incorporated

Inventor： Hemanth Sampath ,  Simone Merlin ,  George Cherian ,  Srinivas Katar ,  Hao Zhu

IPC: H04W72/04 ,  H04W4/12 ,  H04W52/24

CPC classification number: H04W72/0453 ,  H04W4/12 ,  H04W52/243 ,  H04W74/0816

Abstract: A method comprises receiving a first message over a first portion of a frequency bandwidth. The first message includes an identifier of a transmitting first wireless device and an intended recipient second wireless device. The method comprises determining whether a second portion of the frequency bandwidth is idle for a duration of time including at least one of a PIFS time and a time required for a backoff timer to expire. The method comprises transmitting a second message over the second portion of the frequency bandwidth by a third wireless device, the second message having a limited transmission time that is not to extend beyond a transmission time of the first message, thereby allowing an availability of the first and second portions for use after an end of the transmission time of the first message. The third wireless device is not an intended recipient of the first message.

Abstract translation: 一种方法包括在频带宽度的第一部分上接收第一消息。 第一消息包括发送第一无线设备和预期的接收者第二无线设备的标识符。 所述方法包括：确定所述频率带宽的第二部分是否在包括PIFS时间和所述退避定时器所需时间中的至少一个的持续时间内空闲。 该方法包括通过第三无线设备在频带的第二部分上发送第二消息，第二消息具有不超出第一消息的传输时间的有限传输时间，从而允许第一消息的可用性 以及在第一消息的传输时间结束之后使用的第二部分。 第三个无线设备不是第一个消息的预期接收者。

公开(公告)号：US09130812B2

公开(公告)日：2015-09-08

申请号：US13875638

申请日：2013-05-02

Applicant: QUALCOMM Incorporated

Inventor： Mohammad Hossein Taghavi Nasrabadi ,  Sameer Vermani ,  Lin Yang ,  Hemanth Sampath

IPC: H04L27/06 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2647 ,  H04L5/0023 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2628

Abstract: Systems, methods, and devices for wireless communication. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a receiver configured to receive a wireless signal comprising a packet. At least a portion of the wireless signal is configured to be received over a bandwidth lower than or equal to 1.25 MHz. The packet is formed from at least one orthogonal frequency-division multiplexing (OFDM) symbol comprising thirty-two tones. The thirty-two tones correspond to frequency subcarriers within the bandwidth. The thirty-two tones of the at least one OFDM symbol are allocated as: twenty-four data tones, two pilot tones, five guard tones, and one direct current (DC) tone. The apparatus includes a processor configured to evaluate the wireless signal. The processor includes a transform module configured to convert the at least one OFDM symbol into a frequency domain signal using a thirty-two point mode.

Abstract translation: 用于无线通信的系统，方法和设备。 一方面，提供一种无线通信装置。 该装置包括被配置为接收包括分组的无线信号的接收机。 无线信号的至少一部分被配置为在低于或等于1.25MHz的带宽上接收。 分组由包括三十二个音调的至少一个正交频分复用（OFDM）符号形成。 32个音调对应于带宽内的频率子载波。 至少一个OFDM符号的三十二个音调被分配为：二十四个数据音调，两个导频音调，五个保护音调和一个直流（DC）音调。 该装置包括被配置为评估无线信号的处理器。 处理器包括变换模块，其被配置为使用三十二点模式将至少一个OFDM符号转换成频域信号。

公开(公告)号：US09100072B2

公开(公告)日：2015-08-04

申请号：US14022042

申请日：2013-09-09

Applicant: QUALCOMM Incorporated

Inventor： Hemanth Sampath ,  Eugene Jong-Hyon Baik ,  Sameer Vermani

IPC: H04L27/28 ,  H04B7/06 ,  H04B7/08

CPC classification number: H04B7/0602 ,  H04B7/0811 ,  H04B7/0814

Abstract: Apparatuses, methods, and devices for wireless communication. One aspect of the subject matter described in the disclosure provides a method of selecting one of a plurality of antennas. The method includes receiving, at a first antenna, a first training field of a training frame. The method further includes receiving, at a second antenna, a second training field of the training frame. The method further includes selecting one of the first and second antennas based on at least one training field.

Abstract translation: 用于无线通信的设备，方法和设备。 在本公开中描述的主题的一个方面提供了一种选择多个天线之一的方法。 该方法包括在第一天线处接收训练帧的第一训练场。 该方法还包括在第二天线处接收训练帧的第二训练场。 该方法还包括基于至少一个训练场选择第一和第二天线之一。

公开(公告)号：US08995320B2

公开(公告)日：2015-03-31

申请号：US13734101

申请日：2013-01-04

Applicant: Qualcomm Incorporated

Inventor： Sameer Vermani ,  Richard van Nee ,  Albert van Zelst ,  Vincent Knowles Jones ,  Hemanth Sampath

IPC: H04B7/00 ,  H04B7/08 ,  H04L1/00 ,  H04L1/06 ,  H04B7/06

CPC classification number: H04B7/0891 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0689 ,  H04L1/0011 ,  H04L1/0668

Abstract: In a particular embodiment, a method includes applying a first stream to antenna mapping scheme to a preamble portion of a packet. The method further includes applying a second stream to antenna mapping scheme to a data portion of the packet. The second stream to antenna mapping scheme is applied to the data portion of the packet but not to the preamble portion of the packet. The second stream to antenna mapping scheme includes a circulation scheme or a cyclic delay diversity (CDD) scheme.

Abstract translation: 在特定实施例中，一种方法包括将第一流应用于天线映射方案到分组的前导码部分。 该方法还包括将第二流应用于天线映射方案到分组的数据部分。 将第二流到天线映射方案应用于分组的数据部分，但不应用于分组的前导码部分。 第二流到天线映射方案包括循环方案或循环延迟分集（CDD）方案。