公开(公告)号：US09854552B2

公开(公告)日：2017-12-26

申请号：US14740425

申请日：2015-06-16

申请人： NATIONAL INSTRUMENTS CORPORATION

发明人： Max Koehler ,  Achim Nahler ,  Amal Ekbal

IPC分类号： H04B17/00 ,  H04W56/00 ,  H04L27/26

CPC分类号： H04W56/0035 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2688

摘要： Techniques are disclosed relating to detection of wireless signals. In some embodiments, a method includes generating an autocorrelation result for a training field in a received wireless message, generating differentiation information based on the autocorrelation result, and determining that one or more signal recognition criteria are met. In some embodiments, the signal recognition criteria include a first criterion that a first peak in the differentiation information satisfies a first threshold for at least a first time interval. In some embodiments, the signal recognition criteria include one or more additional criteria, including a second criterion that a second peak in the differentiation information satisfies a second threshold for at least a second time interval, wherein the first and second peaks have different polarities and/or a third criterion that the first peak corresponds to an autocorrelation result value that is below a particular autocorrelation threshold.

公开(公告)号：US20160374042A1

公开(公告)日：2016-12-22

申请号：US14740425

申请日：2015-06-16

申请人： NATIONAL INSTRUMENTS CORPORATION

发明人： Max Koehler ,  Achim Nahler ,  Amal Ekbal

IPC分类号： H04W56/00

CPC分类号： H04W56/0035 ,  H04L27/2663 ,  H04L27/2671 ,  H04L27/2675 ,  H04L27/2688

摘要： Techniques are disclosed relating to detection of wireless signals. In some embodiments, a method includes generating an autocorrelation result for a training field in a received wireless message, generating differentiation information based on the autocorrelation result, and determining that one or more signal recognition criteria are met. In some embodiments, the signal recognition criteria include a first criterion that a first peak in the differentiation information satisfies a first threshold for at least a first time interval. In some embodiments, the signal recognition criteria include one or more additional criteria, including a second criterion that a second peak in the differentiation information satisfies a second threshold for at least a second time interval, wherein the first and second peaks have different polarities and/or a third criterion that the first peak corresponds to an autocorrelation result value that is below a particular autocorrelation threshold.

摘要翻译： 公开了关于无线信号的检测的技术。 在一些实施例中，一种方法包括为所接收的无线消息中的训练场生成自相关结果，基于自相关结果生成差分信息，以及确定满足一个或多个信号识别标准。 在一些实施例中，信号识别标准包括第一标准，所述第一标准是所述微分信息中的第一峰满足至少第一时间间隔的第一阈值。 在一些实施例中，信号识别标准包括一个或多个附加标准，包括第二标准，其中所述微分信息中的第二峰满足至少第二时间间隔的第二阈值，其中所述第一和第二峰值具有不同的极性和/ 或第三标准，第一峰值对应于低于特定自相关阈值的自相关结果值。

公开(公告)号：US10257329B2

公开(公告)日：2019-04-09

申请号：US15700050

申请日：2017-09-08

申请人： National Instruments Corporation

发明人： Ahsan Aziz ,  Amal Ekbal ,  Vincent Kotzsch

IPC分类号： H04L29/08 ,  H04W84/04

摘要： A wireless communications apparatus includes first/second data source/sinks that respectively source/sink PDCP SDU and MAC PDU for transfer to/from a memory unit and hardware accelerators controlled by a control processor (CP). In response to sourcing transmit PDCP SDU for transfer to the memory unit, the CP controls the hardware accelerators to generate and write PDCP, RLC, MAC headers to the memory unit and assemble the generated headers and the transmit PDCP SDU from the memory unit into transmit MAC PDU for provision to the second data sink. In response to sourcing receive MAC PDU for transfer to the memory unit, the CP controls the hardware accelerators to decode PDCP, RLC MAC headers of the receive MAC PDU in the memory unit to determine locations of receive PDCP SDU in the memory unit and fetch the receive PDCP SDU from the determined locations for provision to the first data sink.

公开(公告)号：US09582342B2

公开(公告)日：2017-02-28

申请号：US14694566

申请日：2015-04-23

申请人： NATIONAL INSTRUMENTS CORPORATION

发明人： Rohit Gupta ,  Nikhil U. Kundargi ,  Amal Ekbal ,  Achim Nahler

IPC分类号： G06F9/54

CPC分类号： G06F9/545 ,  G06F2209/504 ,  Y02D10/22

摘要： A communication device and associated method which is configured to utilize an API constraint language for communication of resource constraints between different layers of a communication stack. A first layer of the communication stack executing in a first communication device may receive application programming interface (API) messages from a second layer of the communication stack also executing in the first communication device. In addition, the first layer may receive resource constraints with the one or more API messages. These one or more resource constraints may be generated by the second layer, or other software executing in the communication device. The first layer may then execute communication functions based on the API messages and subject to the resource constraints. The resource constraints may affect usage of hardware and/or software resources of the first communication device during execution of the communication functions.

摘要翻译： 一种通信设备和相关联的方法，其被配置为利用API约束语言来通信在通信栈的不同层之间的资源约束。 在第一通信设备中执行的通信栈的第一层可以从也在第一通信设备中执行的通信栈的第二层接收应用程序接口（API）消息。 此外，第一层可以利用一个或多个API消息来接收资源约束。 这些一个或多个资源约束可以由第二层或在通信设备中执行的其他软件生成。 然后，第一层可以基于API消息执行通信功能并且受到资源限制。 资源约束可以在执行通信功能期间影响第一通信设备的硬件和/或软件资源的使用。