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1. 发明授权

US08776221B2 Distinguishing between voice traffic and data links 有权
标题翻译：区分语音流量和数据链接
公开(公告)号：US08776221B2
公开(公告)日：2014-07-08
申请号：US13342293
申请日：2012-01-03
申请人： Raghuram Rangarajan , David Kloper , Yohannes Tesfai
发明人： Raghuram Rangarajan , David Kloper , Yohannes Tesfai
IPC分类号： G06F11/10 , H03M13/09
CPC分类号： H04L1/0046 , H04L1/0072 , H04L1/0091
摘要： Techniques are provided for receiving a transmitted first packet that was formatted using a known scrambling algorithm with an unknown scrambling seed. An encoded packet payload is extracted from the first packet header. The encoded packet payload header is decoded to obtain a first scrambled packet payload header. For each potential value of the unknown seed, the first scrambled packet payload header is descrambled to produce a first set of descrambled packet payload headers and for each potential value of initial register values associated with a cyclic redundancy check, the cyclic redundancy check is executed comprising polynomial division on each of the descrambled packet payload headers such that when the polynomial division results in a zero remainder, a potential unscrambled payload header for the first packet is obtained. Information about the first packet is obtained from the potential unscrambled payload header.
摘要翻译：提供了用于接收使用具有未知加扰种子的已知加扰算法格式化的所发送的第一分组的技术。从第一分组报头中提取编码分组有效载荷。编码分组有效载荷头部被解码以获得第一加扰分组有效载荷头部。对于未知种子的每个潜在值，第一加扰分组有效载荷报头被解扰以产生第一组解扰分组有效载荷报头，并且对于与循环冗余校验相关联的初始寄存器值的每个潜在值，执行循环冗余校验，包括每个解扰分组有效载荷头部上的多项式除法使得当多项式除法导致零余数时，获得用于第一分组的潜在未加扰的有效负载报头。关于第一分组的信息是从潜在的未加扰的有效负载报头获得的。

2. 发明申请

US20120291127A1 DISTINGUISHING BETWEEN BLUETOOTH VOICE AND DATA LINKS 有权
标题翻译：蓝牙声音和数据链接之间的差异
公开(公告)号：US20120291127A1
公开(公告)日：2012-11-15
申请号：US13342293
申请日：2012-01-03
申请人： Raghuram Rangarajan , David Kloper , Yohannes Tesfai
发明人： Raghuram Rangarajan , David Kloper , Yohannes Tesfai
IPC分类号： G06F21/20 , G06F11/10 , H03M13/09
CPC分类号： H04L1/0046 , H04L1/0072 , H04L1/0091
摘要： Techniques are provided for receiving a transmitted first packet that was formatted using a known scrambling algorithm with an unknown scrambling seed. An encoded packet payload is extracted from the first packet header. The encoded packet payload header is decoded to obtain a first scrambled packet payload header. For each potential value of the unknown seed, the first scrambled packet payload header is descrambled to produce a first set of descrambled packet payload headers and for each potential value of initial register values associated with a cyclic redundancy check, the cyclic redundancy check is executed comprising polynomial division on each of the descrambled packet payload headers such that when the polynomial division results in a zero remainder, a potential unscrambled payload header for the first packet is obtained. Information about the first packet is obtained from the potential unscrambled payload header.
摘要翻译：提供了用于接收使用具有未知加扰种子的已知加扰算法格式化的所发送的第一分组的技术。从第一分组报头中提取编码分组有效载荷。编码分组有效载荷头部被解码以获得第一加扰分组有效载荷头部。对于未知种子的每个潜在值，第一加扰分组有效载荷报头被解扰以产生第一组解扰分组有效载荷报头，并且对于与循环冗余校验相关联的初始寄存器值的每个潜在值，执行循环冗余校验，包括每个解扰分组有效载荷头部上的多项式除法使得当多项式除法导致零余数时，获得用于第一分组的潜在未加扰的有效负载报头。关于第一分组的信息是从潜在的未加扰的有效负载报头获得的。

3. 发明授权

US09042318B2 Distributed channel assignment 有权
标题翻译：分布式通道分配
公开(公告)号：US09042318B2
公开(公告)日：2015-05-26
申请号：US13547585
申请日：2012-07-12
申请人： Brian Hart , Raghuram Rangarajan
发明人： Brian Hart , Raghuram Rangarajan
IPC分类号： H04W4/00 , H04W72/08 , H04W72/02
CPC分类号： H04W72/082 , H04W72/02
摘要： Disclosed, in example embodiment herein, is an apparatus comprising an interface and channel selection logic coupled to the interface. The channel selection logic is operable to receive data representative of neighboring wireless devices to a wireless device occupying a channel for a plurality of channels via the interface. The channel selection logic is responsive to receiving the data representative of neighboring wireless devices occupying the plurality of channels to generate a graph for each of the plurality of channels, wherein vertices of the graph represent the wireless device and neighboring wireless devices occupying the channel and edges of the graph represent wireless devices with overlapping coverage areas. The channel selection logic selects the channel for the wireless device whose graph has the smallest radius.
摘要翻译：在本文的示例实施例中公开了一种包括耦合到该接口的接口和信道选择逻辑的装置。频道选择逻辑可操作以经由接口将代表相邻无线装置的数据接收到占用多个频道的频道的无线装置。信道选择逻辑响应于接收代表占用多个信道的相邻无线设备的数据，以生成多个信道中的每个信道的图形，其中图形的顶点表示无线设备，并且邻近的无线设备占据信道和边缘图表示具有重叠覆盖区域的无线设备。信道选择逻辑为图形具有最小半径的无线设备选择信道。

4. 发明申请

US20120314583A1 COEXISTENCE MECHANISM FOR MULTIPLE CHANNELS 有权
标题翻译：多通道的共同机制
公开(公告)号：US20120314583A1
公开(公告)日：2012-12-13
申请号：US13158945
申请日：2011-06-13
申请人： Brian Donald HART , Raghuram Rangarajan , Ahmadreza Hedayat
发明人： Brian Donald HART , Raghuram Rangarajan , Ahmadreza Hedayat
IPC分类号： H04W24/00
CPC分类号： H04W72/04 , H04L1/00 , H04L43/00 , H04W36/18 , H04W72/0406 , H04W74/0816
摘要： In accordance with an example embodiment, there is disclosed herein a coexistence mechanism for multiple channels. A plurality of channels are monitored to determine which channels are available for communications. Upon receiving a request to establish communications on a channel set within the plurality of channels, a response is sent to the request on at least one in the channel set. The response comprises data representative of which channels from the channel set are available for communications. Optionally, the response may include data indicating how long the unavailable channels will be occupied.
摘要翻译：根据示例性实施例，这里公开了一种用于多个信道的共存机制。监视多个信道以确定哪些信道可用于通信。在接收到在多个信道中设置的信道上建立通信的请求时，在信道集中的至少一个上向该请求发送响应。响应包括表示来自信道集的哪些信道可用于通信的数据。可选地，响应可以包括指示不可用信道将被占用多长时间的数据。

5. 发明申请

US20110058524A1 DISTRIBUTED CHANNEL ASSIGNMENT 有权
标题翻译：分布式通道分配
公开(公告)号：US20110058524A1
公开(公告)日：2011-03-10
申请号：US12556875
申请日：2009-09-10
申请人： Brian Hart , Raghuram Rangarajan
发明人： Brian Hart , Raghuram Rangarajan
IPC分类号： H04W72/12
CPC分类号： H04W72/082 , H04W72/02
摘要： Disclosed, in example embodiment herein, is an apparatus comprising an interface and channel selection logic coupled to the interface. The channel selection logic is operable to receive data representative of neighboring wireless devices to a wireless device occupying a channel for a plurality of channels via the interface. The channel selection logic is responsive to receiving the data representative of neighboring wireless devices occupying the plurality of channels to generate a graph for each of the plurality of channels, wherein vertices of the graph represent the wireless device and neighboring wireless devices occupying the channel and edges of the graph represent wireless devices with overlapping coverage areas. The channel selection logic selects the channel for the wireless device whose graph has the smallest radius
摘要翻译：在本文的示例实施例中公开了一种包括耦合到该接口的接口和信道选择逻辑的装置。频道选择逻辑可操作以经由接口将代表相邻无线装置的数据接收到占用多个频道的频道的无线装置。信道选择逻辑响应于接收代表占用多个信道的相邻无线设备的数据，以生成多个信道中的每个信道的图形，其中图形的顶点表示无线设备，并且邻近的无线设备占据信道和边缘图表示具有重叠覆盖区域的无线设备。信道选择逻辑为图形具有最小半径的无线设备选择信道

6. 发明授权

US08797881B2 Coexistence mechanism for multiple channels 有权
标题翻译：多渠道共存机制
公开(公告)号：US08797881B2
公开(公告)日：2014-08-05
申请号：US13158945
申请日：2011-06-13
申请人： Brian Donald Hart , Raghuram Rangarajan , Ahmadreza Hedayat
发明人： Brian Donald Hart , Raghuram Rangarajan , Ahmadreza Hedayat
IPC分类号： H04L12/26 , H04B7/00 , H04L27/28 , H04W72/04 , H04W36/18 , H04L1/00
CPC分类号： H04W72/04 , H04L1/00 , H04L43/00 , H04W36/18 , H04W72/0406 , H04W74/0816
摘要： In accordance with an example embodiment, there is disclosed herein a coexistence mechanism for multiple channels. A plurality of channels are monitored to determine which channels are available for communications. Upon receiving a request to establish communications on a channel set within the plurality of channels, a response is sent to the request on at least one in the channel set. The response comprises data representative of which channels from the channel set are available for communications. Optionally, the response may include data indicating how long the unavailable channels will be occupied.
摘要翻译：根据示例性实施例，这里公开了一种用于多个信道的共存机制。监视多个信道以确定哪些信道可用于通信。在接收到在多个信道中设置的信道上建立通信的请求时，在信道集中的至少一个上向该请求发送响应。响应包括表示来自信道集的哪些信道可用于通信的数据。可选地，响应可以包括指示不可用信道将被占用多长时间的数据。

7. 发明授权

US08243671B2 Distributed channel assignment 有权
标题翻译：分布式通道分配
公开(公告)号：US08243671B2
公开(公告)日：2012-08-14
申请号：US12556875
申请日：2009-09-10
申请人： Brian Hart , Raghuram Rangarajan
发明人： Brian Hart , Raghuram Rangarajan
IPC分类号： H04W4/00
CPC分类号： H04W72/082 , H04W72/02
摘要： Disclosed, in example embodiment herein, is an apparatus comprising an interface and channel selection logic coupled to the interface. The channel selection logic is operable to receive data representative of neighboring wireless devices to a wireless device occupying a channel for a plurality of channels via the interface. The channel selection logic is responsive to receiving the data representative of neighboring wireless devices occupying the plurality of channels to generate a graph for each of the plurality of channels, wherein vertices of the graph represent the wireless device and neighboring wireless devices occupying the channel and edges of the graph represent wireless devices with overlapping coverage areas. The channel selection logic selects the channel for the wireless device whose graph has the smallest radius.
摘要翻译：在本文的示例实施例中公开了一种包括耦合到该接口的接口和信道选择逻辑的装置。频道选择逻辑可操作以经由接口将代表相邻无线装置的数据接收到占用多个频道的频道的无线装置。信道选择逻辑响应于接收代表占用多个信道的相邻无线设备的数据，以生成多个信道中的每个信道的图形，其中图形的顶点表示无线设备，并且邻近的无线设备占据信道和边缘图表示具有重叠覆盖区域的无线设备。信道选择逻辑为图形具有最小半径的无线设备选择信道。

8. 发明授权

US07764218B2 Adaptive sampling of radio frequency channels for radar detection 有权
标题翻译：用于雷达检测的射频信道的自适应采样
公开(公告)号：US07764218B2
公开(公告)日：2010-07-27
申请号：US12178273
申请日：2008-07-23
申请人： Johannes Kruys , Hari Narayanan Rangarajan , Raghuram Rangarajan , Christopher Meil
发明人： Johannes Kruys , Hari Narayanan Rangarajan , Raghuram Rangarajan , Christopher Meil
IPC分类号： G01S7/40 , G01S7/285 , G01S7/02 , G01S13/00
CPC分类号： G01S7/021
摘要： Described in an example embodiment herein is a procedure that comprises sampling one or more channels that are not in use for a short time at certain intervals. In particular embodiments, the interval duration is irregular so as to prevent “out of step” lock with a radar's pulses. During the sampling period, detection events are stored in terms of start time and duration. If potential radar events are detected, the channels are sampled for a longer, second interval to determine whether the detection events are indicative of radar. The length of the sampling period determines the number of samples needed to get an acceptable detection probability.
摘要翻译：在本文的示例性实施例中描述的是包括以特定间隔对短时间内未使用的一个或多个信道进行采样的过程。在具体实施例中，间隔持续时间是不规则的，以便防止雷达的脉冲“失步”锁定。在采样期间，检测事件以开始时间和持续时间存储。如果检测到潜在的雷达事件，则通道被采样更长的第二时间间隔，以确定检测事件是否指示雷达。采样周期的长度决定了获得可接受的检测概率所需的样本数。

9. 发明申请

US20100019947A1 ADAPTIVE SAMPLING OF RADIO FREQUENCY CHANNELS FOR RADAR DETECTION 有权
标题翻译：用于雷达检测的无线电频道的自适应采样
公开(公告)号：US20100019947A1
公开(公告)日：2010-01-28
申请号：US12178273
申请日：2008-07-23
申请人： Johannes Kruys , Hari Narayanan Rangarajan , Raghuram Rangarajan , Christopher Meil
发明人： Johannes Kruys , Hari Narayanan Rangarajan , Raghuram Rangarajan , Christopher Meil
IPC分类号： G01S7/42
CPC分类号： G01S7/021
摘要： Described in an example embodiment herein is a procedure that comprises sampling one or more channels that are not in use for a short time at certain intervals. In particular embodiments, the interval duration is irregular so as to prevent “out of step” lock with a radar's pulses. During the sampling period, detection events are stored in terms of start time and duration. If potential radar events are detected, the channels are sampled for a longer, second interval to determine whether the detection events are indicative of radar. The length of the sampling period determines the number of samples needed to get an acceptable detection probability.
摘要翻译：在本文的示例性实施例中描述的是包括以特定间隔对短时间内未使用的一个或多个信道进行采样的过程。在具体实施例中，间隔持续时间是不规则的，以便防止雷达的脉冲“失步”锁定。在采样期间，检测事件以开始时间和持续时间存储。如果检测到潜在的雷达事件，则通道被采样更长的第二时间间隔，以确定检测事件是否指示雷达。采样周期的长度决定了获得可接受的检测概率所需的样本数。

10. 发明授权

US08411807B1 Mid-packet clear channel assessment 有权
标题翻译：中包清晰通道评估
公开(公告)号：US08411807B1
公开(公告)日：2013-04-02
申请号：US12202782
申请日：2008-09-02
申请人： Raghuram Rangarajan , Brian Donald Hart , Paul J. Stager
发明人： Raghuram Rangarajan , Brian Donald Hart , Paul J. Stager
IPC分类号： H03D1/00
CPC分类号： H04L69/22 , H04L1/08 , H04L7/08 , H04L27/2607 , H04L27/2647 , H04L27/2656 , H04L27/2671 , H04L27/2679
摘要： A mid-packet detection technique is provided that detects a packet with periodic repetitions of a fixed duration at a point in time of the packet other than a start-of-packet pattern, e.g., a preamble, associated with the packet. The process performs packet detection without detecting a preamble and does not require carrier frequency recovery, timing recovery (synchronization) or channel estimation. In one embodiment, a doubly differential matched filter autocorrelation of the received signal is computed and used as a metric for packet detection when the preamble is not observed or to complement preamble detection. The metric is compared to a threshold to indicate detection of a packet.
摘要翻译：提供了一种中间包检测技术，其检测分组的周期性重复，该分组在分组的时间点不同于与分组相关联的分组开始模式（例如，前导码）。该过程执行分组检测而不检测前导码，并且不需要载波频率恢复，定时恢复（同步）或信道估计。在一个实施例中，计算接收信号的双差分匹配滤波器自相关，并将其用作当没有观察到前同步码时的分组检测的度量或用于对前导码检测进行补码。将度量与阈值进行比较以指示分组的检测。

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