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    • 7. 发明申请
    • Frequency offset estimation scheme in scheduled based wireless system
    • 基于计划的无线系统中的频偏预测方案
    • US20130003568A1
    • 2013-01-03
    • US13172075
    • 2011-06-29
    • Hongyu XieYuan ZhuangMurat MeseBrima Ibrahim
    • Hongyu XieYuan ZhuangMurat MeseBrima Ibrahim
    • H04W24/00
    • H04L27/2675H04L27/2659H04L27/266
    • A technique to provide frequency offset estimation for packets transmitted during a service period allocated strictly for designated source and destination devices. The destination device obtains coarse and fine frequency offset estimation from the short and long preambles. A residual frequency offset is tracked for the data blocks and combined with the coarse and fine frequency offset to obtain a total frequency offset to apply to the data blocks. The total frequency offset value at the end of the first packet is saved and, instead of again estimating the coarse and fine frequency offset values with the short and long preambles of the second packet, the saved total frequency offset value is used as the initialization value to add to the residual frequency offset in the second packet. The saved offset value at the end of each packet becomes the initialization value for the subsequent packet.
    • 一种用于为在严格为指定的源和目的地设备分配的服务周期期间发送的分组提供频偏估计的技术。 目标设备从短和长前导码中获得粗略和精细的频率偏移估计。 跟踪数据块的残留频率偏移,并与粗略和精细频率偏移相结合,以获得应用于数据块的总频率偏移量。 保存第一个分组结束时的总频率偏移值,而不是再次使用第二个分组的短和长前导码估计粗略和精细的频率偏移值,将保存的总频偏移值用作初始化值 以添加到第二分组中的剩余频率偏移。 每个数据包结束时保存的偏移量值将成为后续数据包的初始化值。
    • 10. 发明申请
    • METHOD AND SYSTEM FOR A DUAL-MODE BLUETOOTH LOW ENERGY DEVICE
    • 双模蓝牙低能量器件的方法和系统
    • US20110021142A1
    • 2011-01-27
    • US12546621
    • 2009-08-24
    • Prasanna DesaiChikan KwanAngel PoloSong QiaoCindy TianYuan ZhuangGuoxin XieLatha CaliaperoumalBrima Ibrahim
    • Prasanna DesaiChikan KwanAngel PoloSong QiaoCindy TianYuan ZhuangGuoxin XieLatha CaliaperoumalBrima Ibrahim
    • H04B7/00
    • H04W8/005H04W4/80H04W52/0216H04W84/18Y02D70/00Y02D70/144
    • A dual-mode BLE device identifies idle intervals within Bluetooth BR/EDR traffic communications. The identified idle intervals are used by the dual-mode BLE device to concurrently perform various BLE activities. For example, advertising packet transmissions, advertising packet scanning, connection setup, and/or data packet communication may be concurrently performed within identified idle intervals within the Bluetooth BR/EDR traffic communications. Packet transmission timing, advertising interval, scan window, and/or packet size are determined based on the identified idle intervals within the Bluetooth BR/EDR traffic communications. A scan window is adjusted based on timing of expected advertising transmissions and/or advertising interval(s) for saving power. BLE packets and Bluetooth BR/EDR packets may be detected in a single advertising channel. Maximal payload size is set based on the identified idle intervals within Bluetooth BR/EDR traffic communications. As a slave, the dual-mode BLE device updates connection parameters based on the identified idle intervals within Bluetooth BR/EDR traffic communications.
    • 双模式BLE设备识别蓝牙BR / EDR通信通信中的空闲间隔。 识别的空闲间隔由双模BLE设备用于同时执行各种BLE活动。 例如,广告分组传输,广告分组扫描,连接建立和/或数据分组通信可以在蓝牙BR / EDR业务通信内的标识的空闲间隔内同时执行。 基于蓝牙BR / EDR业务通信中识别的空闲间隔来确定分组传输定时,广告间隔,扫描窗口和/或分组大小。 基于预期的广告发送的定时和/或用于节省功率的广告间隔来调整扫描窗口。 可以在单个广告信道中检测到BLE分组和蓝牙BR / EDR分组。 基于蓝牙BR / EDR业务通信中识别的空闲间隔来设置最大有效载荷大小。 作为从设备,双模BLE设备基于蓝牙BR / EDR业务通信中识别的空闲间隔来更新连接参数。