公开(公告)号：EP3444983A1

公开(公告)日：2019-02-20

申请号：EP18187988.3

申请日：2006-03-07

申请人： QUALCOMM Incorporated

发明人： FREDERIKS, Guido, Robert ,  JONES, Vincent, K. ,  RAISSINIA, Alireza

IPC分类号： H04L1/16 ,  H04B7/00

摘要： Circuits, methods, and apparatus that reduce overhead and channel bandwidth required for data reception acknowledgment. One such system uses an enhanced block acknowledgment that acknowledges frames received for different data streams. Another system sends an acknowledgment after the occurrence of a triggering event, such as the end of a duration, the reception of a number of frames, or the reception of a frame having a specific sequence number. Another removes the need for acknowledgment frames by including an acknowledgment field in a transmitted data frame. These block acknowledgments and acknowledgment fields may include an acknowledgement of frames received for each data stream having different traffic identifications, they may be for all received frames or for a specific class or groups of classes of traffic, for specific user priorities, or for other subgroups of received frames, and more that one acknowledgment may be included.

公开(公告)号：EP2707984B1

公开(公告)日：2018-10-17

申请号：EP12723032.4

申请日：2012-05-11

申请人： Qualcomm Incorporated

发明人： VERMANI, Sameer ,  ABRAHAM, Santosh, P. ,  TAGHAVI NASRABADI, Mohammad, Hossein ,  JONES, Vincent, K. ,  SAMPATH, Hemanth

IPC分类号： H04L1/00

CPC分类号： H04L29/06163 ,  H04L1/0011 ,  H04L1/0025 ,  H04L1/0033 ,  H04L1/0039 ,  H04L29/0653 ,  H04L69/18 ,  H04L69/22

摘要： Systems and methods for communicating packets having a plurality of formats are described herein. In some aspects, a signal (SIG) field in the preamble of a packet may indicate whether an extension field, such as an extension SIG field or SIG-B field, is included in the packet. In another aspect, one or more detectors may be used to auto-detect packets formatted as one of at least two different formats based on a short training field (STF) of a received packet. In some aspects, along training field (LTF) in the preamble of a packet may indicate whether the payload is repetition coded.

公开(公告)号：EP1847050B1

公开(公告)日：2016-04-13

申请号：EP06720571.6

申请日：2006-02-08

申请人： QUALCOMM Incorporated

发明人： JONES, Vincent, K. ,  VAN ZELST, Albert ,  VAN NEE, Richard, D.j.

IPC分类号： H04J3/22 ,  H04W16/28

CPC分类号： H04W28/18 ,  H04L7/041 ,  H04W16/28 ,  H04W28/06 ,  H04W80/00 ,  H04W99/00

公开(公告)号：EP1769601B1

公开(公告)日：2018-10-31

申请号：EP05775616.5

申请日：2005-07-22

申请人： QUALCOMM Incorporated

发明人： VAN ZELST, Albert ,  JONES, Vincent, K.

IPC分类号： H04L1/06 ,  H04B7/06 ,  H04L5/00

CPC分类号： H04L1/0625 ,  H04B7/04 ,  H04B7/0667 ,  H04B7/10 ,  H04K1/10 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0064 ,  H04L25/0204 ,  H04L25/0226 ,  H04L27/3488

摘要： In a wireless transmitter having a plurality of spatial streams differentiable at a receiver, wherein data is encoded and transmitted over a communication channel with pilot tones to provide the receiver with information about the effects of the communication channel and/or transmitter impairments and/or receiver impairments on the spatial streams transmitted, the benefits can be provided by identifying a plurality of symbol periods within which symbols representing some of the encoded data are to be transmitted, identifying pilot tone values for the plurality of symbol periods, wherein the identified pilot tone values are such that the receiver, when receiving at least some of the pilot tones having the identified pilot tone values, is provided with signals enabling the receiver to characterize the communication channel and/or transmitter impairments and/or receiver impairments to obtain transmit stream diversity gain, and transmitting the symbols and the pilot tones over the plurality of spatial streams for the plurality of symbol periods. In some embodiments, the pilot tones are orthogonal over space and time or over space and time and frequency, while in others they are semi-orthogonal. Pilot tone values might be of a constant amplitude and phase shifted, or might also have amplitude variations wherein at least two pilot tones are nonzero for spatial streams for a given symbol period.

公开(公告)号：EP2111711A2

公开(公告)日：2009-10-28

申请号：EP08705669.3

申请日：2008-01-03

申请人： QUALCOMM Incorporated

发明人： WORTEL, Klaas ,  GAETHKE, Rainer ,  JONES, Vincent, K. ,  GARDNER, James

IPC分类号： H04L27/36

CPC分类号： H04L27/364 ,  H04L27/3863

摘要： Systems and methodologies are described that employ calibration techniques for a station in a wireless communication system that can be utilized to provide.joint estimates for distortion introduced by in-phase and quadrature (I/Q) imbalance and mixing-product modulated images.

公开(公告)号：EP2324591B1

公开(公告)日：2018-01-24

申请号：EP09790337.1

申请日：2009-07-13

申请人： QUALCOMM Incorporated

发明人： WENTINK, Maarten, Menzo ,  VAN NEE, Didier Johannes, Richard ,  JONES, Vincent, K.

IPC分类号： H04L1/16

CPC分类号： H04L1/1614 ,  H04L1/1685

摘要： A method for parallel communication with wireless local area network (WLAN) receivers is described. A parallel transmission is started. A first MAC protocol data unit (MPDU) is sent to a first WLAN receiver. An acknowledgment (ACK) request is sent to the first WLAN receiver. An ACK is received from the first WLAN receiver.

公开(公告)号：EP2707981A1

公开(公告)日：2014-03-19

申请号：EP12721672.9

申请日：2012-05-11

申请人： Qualcomm Incorporated

发明人： VERMANI, Sameer ,  ABRAHAM, Santosh, P. ,  TAGHAVI NASRABADI, Mohammad, Hossein ,  JONES, Vincent, K. ,  SAMPATH, Hemanth

IPC分类号： H04L1/00

CPC分类号： H04L69/18 ,  H04L1/0029 ,  H04L1/0039 ,  H04L29/06163

摘要： Systems and methods for communicating packets having a plurality of formats are described herein. In some aspects, a signal (SIG) field in the preamble of a packet may indicate whether an extension field, such as an extension SIG field or SIG-B field, is included in the packet. In another aspect, one or more detectors may be used to auto-detect packets formatted as one of at least two different formats based on a short training field (STF) of a received packet. In some aspects, along training field (LTF) in the preamble of a packet may indicate whether the payload is repetition coded.

公开(公告)号：EP1989895A2

公开(公告)日：2008-11-12

申请号：EP07757818.5

申请日：2007-03-02

申请人： Qualcomm, Incorporated

发明人： VAN NEE, D.j. Richard ,  JONES, Vincent, K.

IPC分类号： H04Q7/20

CPC分类号： H04W16/12 ,  H04W72/0406 ,  H04W72/06 ,  H04W72/085 ,  H04W84/18 ,  H04W88/02 ,  H04W92/02

摘要： Methods and systems for signaling on a mixed-mode wireless network comprising a plurality of channels are provided. The mixed- mode wireless network includes high-throughput (HT) wireless devices (102) and legacy wireless devices (104) that use channels of the same width. The HT devices (102) transmit data on at least two channels, while the legacy devices (104) transmit on one channel. The distances between the HT channels and the distances between the legacy channels might differ, however, the channels used by the HT devices (102) and the legacy devices (104) may overlap. As a result, cooperation between the HT devices (102) and legacy devices (104) is provided to enable the devices to coexist on the same wireless network by minimizing collisions and interference. The HT devices (102) are configured to send control information (810a) to the legacy devices (104) to coordinate transmission by the HT devices (102) with the legacy devices (104).

公开(公告)号：EP1751890B1

公开(公告)日：2017-03-01

申请号：EP05754373.8

申请日：2005-05-27

申请人： QUALCOMM Incorporated

发明人： VAN ZELST, Albert ,  JONES, Vincent, K. ,  VAN NEE, Richard, D., J.

IPC分类号： H04B7/204 ,  H04B7/208 ,  H04B7/212

CPC分类号： H04L27/261 ,  H04B7/0671 ,  H04L1/06 ,  H04L1/0618 ,  H04L25/0212 ,  H04L25/0226 ,  H04L27/2613 ,  H04W16/14 ,  H04W24/00 ,  H04W84/12 ,  H04W88/06 ,  H04W99/00

摘要： To detect the number of transmit antennas, a fast Fourier transform operation is performed on the received samples of the transmitted long training symbols of a preamble. Next, each of the Fourier transformed results is multiplied with the reference frequency-domain representation of the long training symbol so as to remove the effect of the symbols and to maintain the channel information. Next, inverse Fourier transform or least squares operations is performed on the multiplied values to compute channel impulse response. The number of shifted impulse response in the channel impulse response represents the detected number of transmit antennas. Packets containing preambles of the present invention may be received by extended devices as well as by legacy receivers that are not configured to receive and interpret these preambles. The training symbols may be cyclically-shifted and transmitted on different transmit antennas.

摘要翻译： 为了检测的发射天线的数目，快速傅立叶变换手术执行上的前同步码的反式mitted长锻炼符号的接收到的样本。 接着，将各傅里叶变换结果的与长训练码元的参考频域表示被倍增，以除去符号的效果，并保持该信道信息。 接着，傅立叶逆变换或最小二乘操作执行中的值相乘来计算信道脉冲响应。 在darstellt发射天线的检测的数量的信道脉冲响应移位脉冲响应的数量。 含有本发明的前同步码的数据包可以通过扩展设备，以及通过传统接收机来接收并没有被配置为接收和解释论文前导码。 锻炼符号可以被循环移位和反式mitted上不同的发射天线。

公开(公告)号：EP2707984A1

公开(公告)日：2014-03-19

申请号：EP12723032.4

申请日：2012-05-11

申请人： Qualcomm Incorporated

发明人： VERMANI, Sameer ,  ABRAHAM, Santosh, P. ,  TAGHAVI NASRABADI, Mohammad, Hossein ,  JONES, Vincent, K. ,  SAMPATH, Hemanth

IPC分类号： H04L1/00

CPC分类号： H04L29/06163 ,  H04L1/0011 ,  H04L1/0025 ,  H04L1/0033 ,  H04L1/0039 ,  H04L29/0653 ,  H04L69/18 ,  H04L69/22

摘要： Systems and methods for communicating packets having a plurality of formats are described herein. In some aspects, a signal (SIG) field in the preamble of a packet may indicate whether an extension field, such as an extension SIG field or SIG-B field, is included in the packet. In another aspect, one or more detectors may be used to auto-detect packets formatted as one of at least two different formats based on a short training field (STF) of a received packet. In some aspects, along training field (LTF) in the preamble of a packet may indicate whether the payload is repetition coded.

摘要翻译： 这里描述了用于传送具有多种格式的分组的系统和方法。 在一些方面，分组的前导码中的信号（SIG）字段可以指示扩展字段（例如扩展SIG字段或SIG-B字段）是否被包括在分组中。 在另一方面，基于接收到的分组的短训练字段（STF），可以使用一个或多个检测器来自动检测格式化为至少两种不同格式之一的分组。 在一些方面，沿着分组的前导码中的训练字段（LTF）可以指示有效载荷是否被重复编码。