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    • 31. 发明申请
    • METHODS AND ARRANGEMENTS FOR FREQUENCY SELECTIVE TRANSMISSION
    • 频率选择传输的方法和安排
    • US20140112246A1
    • 2014-04-24
    • US13731001
    • 2012-12-29
    • Minyoung ParkEldad PerahiaThomas J. KenneyShahrnaz Azizi
    • Minyoung ParkEldad PerahiaThomas J. KenneyShahrnaz Azizi
    • H04W28/16
    • H04W28/16H04L5/0048H04W74/002
    • Logic such as hardware and/or code to narrow available sub-channels in frequency selective transmission communications in which a station selects a narrow band from a wider channel bandwidth. A frequency selective transmission scheme for communications devices may select a 1 or 2 MHz channel from a wider channel bandwidth (e.g., 4, 8, 16 MHz) that consists of a number of 1 or 2 MHz sub-channels and transmitting packets on the selected sub-channel. The access point may narrow the number of sub-channels available for selection by stations. Stations may narrow the number of sub-channels. Both the AP and the stations may operate to narrow the number of sub-channels. A medium access control sub-layer protocol common to the communications devices may facilitate a frequency selective transmission scheme.
    • 诸如用于在频率选择性传输通信中缩小可用子信道的硬件和/或代码的逻辑,其中站从更宽的信道带宽选择窄带。 用于通信设备的频率选择性传输方案可以从由多个1或2MHz子信道组成的较宽信道带宽(例如,4,8,16MHz)中选择1或2MHz信道,并在所选择的信道上传输分组 子频道 接入点可以缩小可用于站点选择的子信道的数量。 车站可能会缩小子频道的数量。 AP和站都可以操作以缩小子信道的数量。 通信设备公用的介质访问控制子层协议可以促进频率选择性传输方案。
    • 33. 发明申请
    • METHODS AND ARRANGEMENTS FOR CHANNEL UPDATES IN WIRELESS NETWORKS
    • 无线网络中通道更新的方法和安排
    • US20140050254A1
    • 2014-02-20
    • US13730931
    • 2012-12-29
    • Shahrnaz AziziThomas J. KenneyEldad Perahia
    • Shahrnaz AziziThomas J. KenneyEldad Perahia
    • H04L27/26
    • H04L27/2666H04L5/0051H04L25/022H04L27/2647
    • Pilot logic may determine channel information updates such as channel state information and phase correction information from pilot tones that do not travel close to the DC tone or the band edge tones. Logic may skip channel updates and phase tracking from pilot tones that have traveled close to the DC tone or the edge tones. In other words, logic may process the shifting pilot tones except for the pilot tones located adjacent to the DC tone and the edge tones. Logic may use channel estimates and phase rotations that are obtained from previous locations of the pilot tones instead of pilot tones that are adjacent to the DC tone or the edge tones. Logic may access memory to store the channel information such as the phase correction information previously obtained and the channel state information previously obtained and derived from processing pilot tones at locations adjacent to the symbol indices next to the DC tone and the edge tones.
    • 导频逻辑可以确定频道信息更新,例如来自不接近DC音调或频带边缘音调的导频音调的信道状态信息和相位校正信息。 逻辑可以跳过频道更新和从已经行进接近直流音或边缘音调的导频音进行相位跟踪。 换句话说,逻辑可以处理除了与DC音调和边缘音调相邻的导频音调之外的移动导频音调。 逻辑可以使用从导频音调的先前位置获得的信道估计和相位旋转,而不是与DC音调或边缘音调相邻的导频音调。 逻辑可以访问存储器以存储信道信息,例如先前获得的相位校正信息和先前从与直流音和边缘音调相邻的符号索引处的导频音处理导出的信道状态信息。