公开(公告)号：US09300353B1

公开(公告)日：2016-03-29

申请号：US14683455

申请日：2015-04-10

Applicant: NXP B.V.

Inventor： Andries Hekstra ,  Stefan Drude ,  Frank Leong ,  Arie Koppelaar

IPC: H04B1/00 ,  H04B1/7073 ,  H04B1/709 ,  H04L29/06

CPC classification number: H04B1/70735 ,  H04B1/709 ,  H04B2201/7073 ,  H04J13/00 ,  H04L1/0083 ,  H04L1/08

Abstract: Various exemplary embodiments relate to a device for performing a method of communication transmission. The device may include a memory; a processor configured to: determine a spreading code with low sidelobe levels in its autocorrelation sequence to be used; create a Start of Frame Delimiter (SOFD) for a packet including the spreading code and a cyclic prefix, wherein the cyclic prefix is a portion of the spreading code; and transmit the packet with the SOFD.

Abstract translation: 各种示例性实施例涉及用于执行通信传输方法的设备。 该设备可以包括存储器; 处理器，其被配置为：在其要使用的自相关序列中确定具有低旁瓣电平的扩展码; 为包括扩展码和循环前缀的分组创建起始帧定界符（SOFD），其中循环前缀是扩展码的一部分; 并用SOFD发送数据包。

公开(公告)号：US20160056950A1

公开(公告)日：2016-02-25

申请号：US14468317

申请日：2014-08-25

Applicant: NXP B.V.

Inventor： Frank Leong ,  Andries Hekstra ,  Arie Koppelaar ,  Stefan Drude

IPC: H04L7/00 ,  H04L12/26

CPC classification number: H04L7/0037 ,  G06K7/10237 ,  G06K19/07766 ,  H04B5/00 ,  H04J3/0682 ,  H04L7/0012 ,  H04L43/0864 ,  H04W4/023 ,  H04W4/80 ,  H04W56/00

Abstract: Aspects of the present disclosure provide communications between local and remote devices having low-frequency (LF) and high-frequency (HF) circuits. As may be implemented in accordance with one or more embodiments, the local device transmits an LF signal to the remote device, which synchronizes its clock based on the LF signal. Another LF signal is communicated from the local device to the remote device using a reduced quality factor, which can be implemented to facilitate synchronization. The clock is resynchronized based on the second LF signal and used to transmit an HF signal with a time delay. The local device synchronizes its clock based on the HF signal, and transmits another HF signal to the remote device using the clock and another time delay. The remote device re-synchronizes its clock based on the second HF signal while accounting for a trip time for communicating the first and/or second HF signals.

Abstract translation: 本公开的方面提供具有低频（LF）和高频（HF）电路的本地和远程设备之间的通信。 如可以根据一个或多个实施例来实现的，本地设备向远程设备发送LF信号，该远程设备基于LF信号同步其时钟。 另一个LF信号使用降低的品质因子从本地设备传送到远程设备，这可以被实现以促进同步。 基于第二LF信号重新同步时钟，并用于以时间延迟发送HF信号。 本地设备基于HF信号同步其时钟，并使用时钟和另一个时间延迟将另一个HF信号发送到远程设备。 远程设备基于第二HF信号重新同步其时钟，同时考虑用于传送第一和/或第二HF信号的跳闸时间。

公开(公告)号：US09160519B1

公开(公告)日：2015-10-13

申请号：US14468006

申请日：2014-08-25

Applicant: NXP B.V.

Inventor： Frank Leong ,  Andries Hekstra ,  Arie Koppelaar ,  Stefan Drude

IPC: H04L7/00 ,  H04L12/26

CPC classification number: H04W56/002 ,  H04J3/0682 ,  H04L43/0864 ,  H04W4/023 ,  H04W4/80 ,  H04W12/06

Abstract: Aspects of the present disclosure are directed to communications between devices. As consistent with one or more embodiments, a local device has a first clock, a low-frequency (LF) transmitter and a high-frequency (HF) transceiver. A remote device includes a second clock, a LF receiver and a HF transceiver. An LF signal is transmitted from the local device to the remote device and used to synchronize the second clock. The first clock is synchronized based on an HF signal transmitted to the local device using the synchronized second clock and a first predetermined time delay relative to receipt of the LF signal. The second clock is re-synchronized based on a second HF signal transmitted to the remote device using the first clock and a second predetermined time delay relative to receipt of the first HF signal, while accounting for a trip time for communicating one or both of the HF signals.

Abstract translation: 本公开的方面涉及设备之间的通信。 与一个或多个实施例一致，本地设备具有第一时钟，低频（LF）发射机和高频（HF）收发器。 远程设备包括第二时钟，LF接收机和HF收发器。 LF信号从本地设备发送到远程设备，并用于同步第二个时钟。 基于使用同步的第二时钟发送到本地设备的HF信号和相对于LF信号的接收的第一预定时间延迟，第一时钟被同步。 基于使用第一时钟发送到远程设备的第二HF信号和相对于接收到第一HF信号的第二预定时间延迟来重新同步第二时钟，同时考虑到用于传送第一时钟中的一个或两个 HF信号。