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27 条记录 (耗时 0.039 秒)

    Fast Control Messaging Mechanism For Use In Wireless Network Communications
    23.
    发明申请
    Fast Control Messaging Mechanism For Use In Wireless Network Communications 有权
    用于无线网络通信的快速控制消息传递机制

    公开(公告)号：US20070058566A1

    公开(公告)日：2007-03-15

    申请号：US11531210

    申请日：2006-09-12

    申请人： Guido Frederiks ,  Vincent Jones ,  Alireza Raissinia

    发明人： Guido Frederiks ,  Vincent Jones ,  Alireza Raissinia

    IPC分类号： H04L12/26

    CPC分类号： H04L1/0072 ,  H04L1/0041 ,  H04L1/0061 ,  H04L1/1614 ,  H04L1/1657 ,  H04L1/1854 ,  H04L69/22 ,  H04W80/00

    摘要： In a wireless network according to embodiments of the present invention, fast control messaging frames are used to signal control information. A fast control messaging (“FCM”) frame includes MAC layer control bits in a PLCP header, obviating the need for a PSDU. These frames can be used in 802.11n wireless networks as well as in other suitable 802.11x networks as well as non-802.11x networks to exchange control information while significantly reducing network overhead. In some embodiments, some information that might have been conveyed to a receiver's MAC layer in a PSDU is conveyed by including that information is a PLCP header and having logic within the receiver's PHY layer processing to process that information and convey that information up to the receiver's MAC layer in a simulated PSDU or other method. The indicator of an FCM frame can be a bit in a PLCP header, a modification of a CRC field of the PLCP header, or other indicator. The medication of the CRC field of the PLCP header can be an inversion of the CRC field, a translation of the CRC field by a constant value, or both, or some other variation.

    摘要翻译： 在根据本发明的实施例的无线网络中，使用快速控制消息帧来信号控制信息。 快速控制消息（“FCM”）帧包括PLCP报头中的MAC层控制位，从而避免了对PSDU的需要。 这些帧可以在802.11n无线网络以及其他合适的802.11x网络以及非802.11x网络中使用，以交换控制信息，同时显着减少网络开销。 在一些实施例中，可能已经传送到PSDU中的接收机的MAC层的一些信息通过包括该信息是PLCP报头并在接收机的PHY层处理中具有逻辑来处理该信息并将该信息传达到接收机 MAC层在模拟PSDU或其他方法中。 FCM帧的指示符可以是PLCP头中的一位，PLCP头的CRC字段的修改或其他指示符。 PLCP头的CRC字段的药物可以是CRC字段的反转，CRC字段的转换恒定值，或两者，或一些其他变体。

    Efficient wireless transmission opportunity handoff
    24.
    发明申请
    Efficient wireless transmission opportunity handoff 有权

    公开(公告)号：US20060227733A1

    公开(公告)日：2006-10-12

    申请号：US11378612

    申请日：2006-03-18

    申请人： Guido Frederiks ,  Vincent Jones ,  Alireza Raissinia

    发明人： Guido Frederiks ,  Vincent Jones ,  Alireza Raissinia

    IPC分类号： H04Q7/00

    CPC分类号： H04W74/02 ,  H04W28/06 ,  H04W36/00

    摘要： Circuits, methods, and apparatus that provide high-throughput control fields that, among other functions, provide efficient TXOP handoffs in wireless networks. A handoff may be made by setting one or more bits in a field in a QoS frame, such as the HT control or other appropriate field. Various conditions may be placed on a handoff by a granting station. For example, conditions specifying where a station receiving a TXOP handoff may send data, what the receiving station may do with any remaining TXOP, or what types of data may be transmitted by the receiving station may be imposed. These various conditions may be combined or omitted in any logic combination.

    Pilot tones in a multi-transmit OFDM system usable to capture transmitter diversity benefits
    25.
    发明申请
    Pilot tones in a multi-transmit OFDM system usable to capture transmitter diversity benefits 有权
    可用于捕获发射机分集优势的多发射OFDM系统中的导频音调

    公开(公告)号：US20060018394A1

    公开(公告)日：2006-01-26

    申请号：US11187603

    申请日：2005-07-21

    申请人： Albert van Zelst ,  Vincent Jones

    发明人： Albert van Zelst ,  Vincent Jones

    IPC分类号： H04K1/10

    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.

    摘要翻译： 在具有在接收机可微分的多个空间流的无线发射机中，其中通过具有导频音调的通信信道对数据进行编码和发送，以向接收机提供关于通信信道和/或发射机损伤和/或接收机的影响的信息 对发送的空间流的损伤，可以通过识别多个符号周期来提供益处，在多个符号周期内将表示一些编码数据的符号发送，识别多个符号周期的导频音值，其中所识别的导频音调值 使得接收机在接收到具有所识别的导频音值的至少一些导频音时，被提供有使得接收机能够表征通信信道和/或发射机损伤和/或接收机损伤以获得发射流分集增益的信号 并且通过多个传输符号和导频音调 的多个符号周期的空间流。 在一些实施例中，导频音调在空间和时间上或在空间和时间和频率上是正交的，而在另一些实施例中，它们是半正交的。 导频音调值可能具有恒定幅度和相移，或者也可能具有振幅变化，其中对于给定符号周期，空间流的至少两个导频音调不为零。

    Medium access control protocol for OFDM wireless networks
    26.
    发明申请
    Medium access control protocol for OFDM wireless networks 有权

    公开(公告)号：US20060007885A1

    公开(公告)日：2006-01-12

    申请号：US11221430

    申请日：2005-09-08

    申请人： Michael Pollack ,  Vincent Jones ,  Gregory Raleigh

    发明人： Michael Pollack ,  Vincent Jones ,  Gregory Raleigh

    IPC分类号： H04Q7/00

    CPC分类号： H04L5/023 ,  H04L27/2602

    摘要： A medium access contention protocol that is highly beneficial in wireless networks and particularly in wireless networks that employ a fixed minimum burst size such as OFDM wireless networks. In one embodiment, a MAC protocol is a demand-assigned protocol that maximizes utilization of the bus medium (the allocated frequency spectrum.) Each data communication device (DCD) in the network communicates with a central access point (AP). Multiple DCDs may request access from the AP in the same request access (RA) burst. Each of the multiple DCDs transmits its access request to the AP within a frequency domain channel in the RA burst that is orthogonal to the frequency domain channels used by the other DCDs requesting access. Each DCD includes channel training information in the access request burst to allow the AP and/or DCD to adapt to rapid variations in channel characteristics.

    OFDM interference cancellation based on training symbol interference
    27.
    发明申请
    OFDM interference cancellation based on training symbol interference 有权
    基于训练符号干扰的OFDM干扰消除

    公开(公告)号：US20050271155A1

    公开(公告)日：2005-12-08

    申请号：US11198381

    申请日：2005-08-05

    申请人： Vincent Jones ,  Derek Gerlach ,  Gregory Raleigh

    发明人： Vincent Jones ,  Derek Gerlach ,  Gregory Raleigh

    IPC分类号： H04J11/00 ,  H04L25/03 ,  H04L27/26 ,  H04L27/28

    CPC分类号： H04L27/2647 ,  H04L25/0328

    摘要： Systems and methods for optimally combining signals from multiple antennas to ameliorate the effects of noise and/or interference on OFDM communications are provided. In one embodiment, an initial spatial statistical characterization of interference and/or noise is based on training symbols received via each antenna. Because the transmitted values of the training symbols are already known, there is no need to estimate their transmitted value to form this initial statistical characterization. The data symbol values received via the multiple antennas are combined based on the initial spatial statistical characterization. The result of this combination step is then used to form a refined spatial statistical characterization of noise and/or interference. The received data symbol values are then recombined based on the refined spatial statistical characterization.

    摘要翻译： 提供了用于最佳地组合来自多个天线的信号以改善噪声和/或干扰对OFDM通信的影响的系统和方法。 在一个实施例中，干扰和/或噪声的初始空间统计表征基于经由每个天线接收的训练符号。 因为训练符号的传输值已经是已知的，所以不需要估计它们的传输值来形成这个初始的统计特征。 经由多个天线接收的数据符号值根据初始的空间统计特征进行组合。 然后将该组合步骤的结果用于形成噪声和/或干扰的精细空间统计表征。 然后，基于精确的空间统计特征重新组合接收到的数据符号值。