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    ADVANCED WIRELESS PACKET TRANSMISSION SCHEME WITH ENHANCEMENTS TO ACCOMMODATE BASIC WIRELESS PACKET TRANSMISSION SCHEME
    14.
    发明申请
    ADVANCED WIRELESS PACKET TRANSMISSION SCHEME WITH ENHANCEMENTS TO ACCOMMODATE BASIC WIRELESS PACKET TRANSMISSION SCHEME 审中-公开
    高级无线分组传输方案，增强基本无线分组传输方案

    公开(公告)号：WO2007103805A2

    公开(公告)日：2007-09-13

    申请号：PCT/US2007063204

    申请日：2007-03-02

    Applicant: QUALCOMM INC ,  VAN NEE D J RICHARD ,  JONES VINCENT K

    Inventor： VAN NEE D J RICHARD ,  JONES VINCENT K

    IPC: H04W16/12 ,  H04W72/08 ,  H04W84/18 ,  H04W88/02 ,  H04W92/02

    CPC classification number: H04W16/12 ,  H04W72/0406 ,  H04W72/06 ,  H04W72/085 ,  H04W84/18 ,  H04W88/02 ,  H04W92/02

    Abstract: 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 and legacy wireless devices that use channels of the same width. The HT devices transmit data on at least two channels, while the legacy devices 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 and the legacy devices may overlap. As a result, cooperation between the HT devices and legacy devices is provided to enable the devices to coexist on the same wireless network by minimizing collisions and interference. The HT devices are configured to send control information to the legacy devices to coordinate transmission by the HT devices with the legacy devices.

    Abstract translation: 提供了在包括多个通道的混合模式无线网络上进行信令的方法和系统。 混合模式无线网络包括高吞吐量（HT）无线设备和使用相同宽度的信道的传统无线设备。 HT设备在至少两个通道上传输数据，而传统设备在一个通道上传输数据。 HT信道之间的距离和传统信道之间的距离可能不同，但HT设备和传统设备使用的信道可能会重叠。 结果，提供HT设备和传统设备之间的协作，以使设备能够通过最小化冲突和干扰来在同一无线网络上共存。 HT设备被配置为向旧设备发送控制信息，以协调HT设备与传统设备的传输。

    PILOT TONES IN A MULTI-TRANSMIT OFDM SYSTEM USABLE TO CAPTURE TRANSMITTER DIVERSITY BENEFITS
    15.
    发明公开
    PILOT TONES IN A MULTI-TRANSMIT OFDM SYSTEM USABLE TO CAPTURE TRANSMITTER DIVERSITY BENEFITS 审中-公开
    在多OFDM端系统的导频音调来获得无线电分集益处

    公开(公告)号：EP1769601A4

    公开(公告)日：2012-06-20

    申请号：EP05775616

    申请日：2005-07-22

    Applicant: QUALCOMM INC

    Inventor： VAN ZELST ALBERT ,  JONES VINCENT K

    IPC: H04J99/00 ,  H04L1/06 ,  H04B7/06 ,  H04L5/00

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

    Abstract: 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.

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