公开(公告)号：US08855670B2

公开(公告)日：2014-10-07

申请号：US13388534

申请日：2010-07-12

申请人： Jianfeng Wang ,  Kiran S. Challapali

发明人： Jianfeng Wang ,  Kiran S. Challapali

IPC分类号： H04W24/00 ,  H04W16/14 ,  H04W72/02 ,  H04W24/02

CPC分类号： H04W16/14 ,  H04W24/02 ,  H04W72/02

摘要： A method for dynamically reconfiguring a regulation-compliance mode of a device, belonging to a wireless network and operating under a network-operation mode (311, 321, 322) in a spectrum band with primary users. The method includes periodically determining at least one of: a primary protection capability of the device (501, 502, 704, 705), availability of enabling signal to the device (601, 701), and a frequency of location change of the device (508, 510, 711, 712); and based on the results of such determinations, operating and configuring transmission parameters of the device according to one of a plurality of regulation-compliance modes that are supported by the device. The wireless device includes: a signal transceiver (201) for processing, transmitting and receiving wireless signals from secondary devices; a primary signal sensing module (202) for detecting a primary signal; a spectrum manager (204) for selecting or deselecting an operating frequency channel; and a geolocation module for determining the location of the device. The wireless device may further include a network interface (203) for accessing a TV band database and a geolocation database.

摘要翻译： 一种用于动态地重新配置属于无线网络并且在与主用户的频谱带中的网络操作模式（311,321,322）下操作的设备的调节兼容模式的方法。 该方法包括周期性地确定以下至少一个：设备的主要保护能力（501,502,704,705），对设备（601,701）的启用信号的可用性以及设备的位置变化频率（ 508，510，711，712）; 并且基于这种确定的结果，根据由设备支持的多个调节兼容模式中的一个来操作和配置设备的传输参数。 无线设备包括：信号收发器（201），用于处理，发送和接收来自辅助设备的无线信号; 主信号感测模块（202），用于检测主信号; 频谱管理器（204），用于选择或取消选择工作频率信道; 以及用于确定设备的位置的地理位置模块。 无线设备还可以包括用于访问TV频带数据库和地理位置数据库的网络接口（203）。

公开(公告)号：US08467357B2

公开(公告)日：2013-06-18

申请号：US12746279

申请日：2008-12-05

申请人： Jianfeng Wang ,  Dave A. T. Cavalcanti ,  Kiran S. Challapali

发明人： Jianfeng Wang ,  Dave A. T. Cavalcanti ,  Kiran S. Challapali

IPC分类号： H04W4/00

CPC分类号： H04W74/02 ,  H04W28/06

摘要： A flexible wireless system and method that support both centralized and distributed modes of MAC protocols, use a new recurring MAC superframe comprising: a beacon period, a data/sense/sleep period for data selective communication, sleep and channel sensing for detecting primary users in cognitive systems; and a signaling window used for exchanging network entry messages and channel reservation requests, the system including beacon operation, a peer beacon device in distributed mode and a master beacon device in centralized mode which are used to selectively participate in the beacon operation, as well as a slave beacon device associated with the master device. The system may employ controlled channel access for the beacon period, the channel access being reservation based. The invention provides a unified MAC protocol that can be adopted in the standards, and supports flexible operation in distributed mode or centralized mode, and seamless transfer from one to the other.

摘要翻译： 支持集中式和分布式MAC协议模式的灵活的无线系统和方法使用新的循环MAC超帧，其包括：信标周期，用于数据选择性通信的数据/感测/睡眠周期，用于检测主用户的睡眠和信道感测 认知系统; 以及用于交换网络入口消息和信道预留请求的信令窗口，所述系统包括信标操作，分布式模式中的对等信标设备和集中式模式的主信标设备，用于选择性地参与信标操作，以及 与主设备相关联的从属信标设备。 该系统可以对信标周期采用受控的信道接入，该信道接入是基于预约的。 本发明提供了一种统一的MAC协议，可以在标准中采用，支持分布式或集中式的灵活运行，无缝转接。

公开(公告)号：US20120129467A1

公开(公告)日：2012-05-24

申请号：US13388534

申请日：2010-07-12

申请人： Jianfeng Wang ,  Kiran S. Challapali

发明人： Jianfeng Wang ,  Kiran S. Challapali

IPC分类号： H04B17/00

CPC分类号： H04W16/14 ,  H04W24/02 ,  H04W72/02

摘要： A method for dynamically reconfiguring a regulation-compliance mode of a device, belonging to a wireless network and operating under a network-operation mode (311, 321, 322) in a spectrum band with primary users. The method includes periodically determining at least one of: a primary protection capability of the device (501, 502, 704, 705), availability of enabling signal to the device (601, 701), and a frequency of location change of the device (508, 510, 711, 712); and based on the results of such determinations, operating and configuring transmission parameters of the device according to one of a plurality of regulation-compliance modes that are supported by the device. The wireless device includes: a signal transceiver (201) for processing, transmitting and receiving wireless signals from secondary devices; a primary signal sensing module (202) for detecting a primary signal; a spectrum manager (204) for selecting or deselecting an operating frequency channel; and a geolocation module for determining the location of the device. The wireless device may further include a network interface (203) for accessing a TV band database and a geolocation database.

摘要翻译： 一种用于动态地重新配置属于无线网络并且在与主用户的频谱带中的网络操作模式（311,321,322）下操作的设备的调节兼容模式的方法。 该方法包括周期性地确定以下至少一个：设备的主要保护能力（501,502,704,705），对设备（601,701）的启用信号的可用性以及设备的位置变化频率（ 508，510，711，712）; 并且基于这种确定的结果，根据由设备支持的多个调节兼容模式中的一个来操作和配置设备的传输参数。 无线设备包括：信号收发器（201），用于处理，发送和接收来自辅助设备的无线信号; 主信号感测模块（202），用于检测主信号; 频谱管理器（204），用于选择或取消选择工作频率信道; 以及用于确定设备的位置的地理位置模块。 无线设备还可以包括用于访问TV频带数据库和地理位置数据库的网络接口（203）。

公开(公告)号：US20100246442A1

公开(公告)日：2010-09-30

申请号：US12744422

申请日：2008-11-24

申请人： Jianfeng Wang ,  Kiran S. Challapali ,  Dave A.T. Cavalcanti

发明人： Jianfeng Wang ,  Kiran S. Challapali ,  Dave A.T. Cavalcanti

IPC分类号： H04L12/28

CPC分类号： H04W16/14 ,  H04L43/00 ,  H04W72/1231

摘要： In a distributed-control cognitive radio network, each secondary user (200) in a network broadcasts parameters (125) that indicate the minimum quiet-period sensing demand for regular quiet-periods that the device requires for reliable detection of a primary user (290). Each device (200) in the network adjusts its quiet-period sensing rate to accommodate the highest minimum sensing demand (155, 160), thereby providing optimal efficiency relative to quiet-period support while assuring that all devices (200) in the network are provided at least their minimum quiet-period sensing demand (150). Both the interval between regular quiet-periods and the duration of these quiet-periods are negotiated among the devices on the network (155). A quiet-period index (140) is used to synchronize all of the devices to a common time base. Techniques are also provided for efficient coordination of on-demand quiet-period requests, and for supporting different quiet-period schedules for multiple classes of primary users.

摘要翻译： 在分布式控制认知无线电网络中，网络中的每个次要用户（200）广播参数（125），其指示设备需要用于主要用户的可靠检测的常规安静时段的最小安静周期感测需求（290 ）。 网络中的每个设备（200）调整其静默期感测速率以适应最高的最小感测需求（155,160），从而相对于静默期支持提供最佳效率，同时确保网络中的所有设备（200） 提供至少其最小静默期感测需求（150）。 在网络上的设备之间协商常规安静时段之间的间隔和这些安静时段的持续时间（155）。 静默期索引（140）用于将所有设备同步到公共时基。 还提供了技术，用于有效协调按需安静期间请求，并支持多类主要用户的不同安静期计划。

公开(公告)号：US08576747B2

公开(公告)日：2013-11-05

申请号：US12744422

申请日：2008-11-24

申请人： Jianfeng Wang ,  Kiran S. Challapali ,  Dave A. T. Cavalcanti

发明人： Jianfeng Wang ,  Kiran S. Challapali ,  Dave A. T. Cavalcanti

IPC分类号： H04L12/28

CPC分类号： H04W16/14 ,  H04L43/00 ,  H04W72/1231

摘要： In a distributed-control cognitive radio network, each secondary user (200) in a network broadcasts parameters (125) that indicate the minimum quiet-period sensing demand for regular quiet-periods that the device requires for reliable detection of a primary user (290). Each device (200) in the network adjusts its quiet-period sensing rate to accommodate the highest minimum sensing demand (155, 160), thereby providing optimal efficiency relative to quiet-period support while assuring that all devices (200) in the network are provided at least their minimum quiet-period sensing demand (150). Both the interval between regular quiet-periods and the duration of these quiet-periods are negotiated among the devices on the network (155). A quiet-period index (140) is used to synchronize all of the devices to a common time base. Techniques are also provided for efficient coordination of on-demand quiet-period requests, and for supporting different quiet-period schedules for multiple classes of primary users.

摘要翻译： 在分布式控制认知无线电网络中，网络中的每个次要用户（200）广播参数（125），其指示设备需要用于主要用户的可靠检测的常规安静时段的最小安静周期感测需求（290 ）。 网络中的每个设备（200）调整其静默期感测速率以适应最高的最小感测需求（155,160），从而相对于静默期支持提供最佳效率，同时确保网络中的所有设备（200） 提供至少其最小静默期感测需求（150）。 在网络上的设备之间协商常规安静时段之间的间隔和这些安静时段的持续时间（155）。 静默期索引（140）用于将所有设备同步到公共时基。 还提供了技术，用于有效协调按需安静期间请求，并支持多类主要用户的不同安静期计划。

公开(公告)号：US20100304772A1

公开(公告)日：2010-12-02

申请号：US12746271

申请日：2008-12-05

申请人： Jianfeng Wang ,  Kiran S. Challapali

发明人： Jianfeng Wang ,  Kiran S. Challapali

IPC分类号： H04W74/00

CPC分类号： H04W72/1278 ,  H04W16/14 ,  H04W48/08 ,  H04W56/0015 ,  H04W56/003 ,  H04W88/06

摘要： To facilitate multi-channel communications over distributed-control radio networks, the timing of networks on multiple substantially independent channels are adjusted (350) so as to establish a common time base among the networks. With this common time base, data is transmitted concurrently (230), using the bandwidth provided by the multiple networks. To further optimize the efficiency of this technique for cognitive radio networks, the quiet period (QP) and signaling window (SW) on each network are scheduled (355) to provide overlapping quiet periods (QP) and/or overlapping signaling windows (SW). Preferably, each multi-channel user is assigned (360) the same time slot in the beacon periods (210) of the network on each channel, thereby facilitating efficient beacon transmission and reception.

摘要翻译： 为了促进分布式控制无线电网络上的多信道通信，调整多个基本上独立的信道上的网络的定时（350），以便在网络之间建立公共时基。 利用该公共时基，使用由多个网络提供的带宽同时传输数据（230）。 为了进一步优化用于认知无线电网络的该技术的效率，调度每个网络上的安静时段（QP）和信令窗口（SW）（355）以提供重叠的安静时段（QP）和/或重叠的信令窗口（SW） 。 优选地，每个多信道用户在每个信道上的网络的信标周期（210）中分配（360）相同的时隙，从而有助于有效的信标发送和接收。

公开(公告)号：US20100271948A1

公开(公告)日：2010-10-28

申请号：US12746261

申请日：2008-12-05

申请人： Kiran S. Challapali ,  Jianfeng Wang

发明人： Kiran S. Challapali ,  Jianfeng Wang

IPC分类号： H04L12/26

CPC分类号： H04W72/085 ,  H04W16/14 ,  H04W36/06

摘要： A source-assisted channel management method in a distributed spectrum cognitive radio wireless network handling a source of multimedia stream data handles a plurality of communicating devices (1, 2, 3) forming a group, and manages channels with no separate controller that is referenced in applicable IEEE standard. The source makes the reservation on behalf of the device group knows traffic schedule, and determines out-of-band channel scanning, back up channel and channel vacation. The method uses a flexible MAC superframe structure and proactively scans for back-up channels which could be used in lieu of the current channel, identifies devices in the group which should vacate a current channel when any one device from the group of communicating devices (1, 2, 3) detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule. The method ensures that no interference is caused to existing users and maintains QoS.

摘要翻译： 处理多媒体流数据源的分布式频谱认知无线电无线网络中的源辅助信道管理方法处理形成组的多个通信设备（1,2,3），并且管理没有单独控制器的信道， 适用的IEEE标准。 源代表设备组的预约知道流量调度，并确定带外频道扫描，备份频道和频道休假。 该方法使用灵活的MAC超帧结构，并主动扫描可用于代替当前信道的备用信道，识别当来自通信设备组（1）的任何一个设备时，应当腾出当前信道的组中的设备 ，2,3）检测在线人员，并且基于所述业务调度确定何时无线网络应该腾出当前频道。 该方法确保对现有用户不产生干扰，维护QoS。

公开(公告)号：US09191968B2

公开(公告)日：2015-11-17

申请号：US12746271

申请日：2008-12-05

申请人： Jianfeng Wang ,  Kiran S. Challapali

发明人： Jianfeng Wang ,  Kiran S. Challapali

IPC分类号： H04W56/00 ,  H04W72/12 ,  H04W16/14 ,  H04W48/08 ,  H04W88/06

CPC分类号： H04W72/1278 ,  H04W16/14 ,  H04W48/08 ,  H04W56/0015 ,  H04W56/003 ,  H04W88/06

摘要： To facilitate multi-channel communications over distributed-control radio networks, the timing of networks on multiple substantially independent channels are adjusted (350) so as to establish a common time base among the networks. With this common time base, data is transmitted concurrently (230), using the bandwidth provided by the multiple networks. To further optimize the efficiency of this technique for cognitive radio networks, the quiet period (QP) and signaling window (SW) on each network are scheduled (355) to provide overlapping quiet periods (QP) and/or overlapping signaling windows (SW). Preferably, each multi-channel user is assigned (360) the same time slot in the beacon periods (210) of the network on each channel, thereby facilitating efficient beacon transmission and reception.

摘要翻译： 为了促进分布式控制无线电网络上的多信道通信，调整多个基本上独立的信道上的网络的定时（350），以便在网络之间建立公共时基。 利用该公共时基，使用由多个网络提供的带宽同时传输数据（230）。 为了进一步优化用于认知无线电网络的该技术的效率，调度每个网络上的安静时段（QP）和信令窗口（SW）（355）以提供重叠的安静时段（QP）和/或重叠的信令窗口（SW） 。 优选地，每个多信道用户在每个信道上的网络的信标周期（210）中分配（360）相同的时隙，从而有助于有效的信标发送和接收。

公开(公告)号：US08451751B2

公开(公告)日：2013-05-28

申请号：US12746261

申请日：2008-12-05

申请人： Kiran S. Challapali ,  Jianfeng Wang

发明人： Kiran S. Challapali ,  Jianfeng Wang

IPC分类号： H04L12/28 ,  H04W4/00 ,  H04B7/216

CPC分类号： H04W72/085 ,  H04W16/14 ,  H04W36/06

摘要： A source-assisted channel management method in a distributed spectrum cognitive radio wireless network handling a source of multimedia stream data handles a plurality of communicating devices (1, 2, 3) forming a group, and manages channels with no separate controller that is referenced in applicable IEEE standard. The source makes the reservation on behalf of the device group knows traffic schedule, and determines out-of-band channel scanning, back up channel and channel vacation. The method uses a flexible MAC superframe structure and proactively scans for back-up channels which could be used in lieu of the current channel, identifies devices in the group which should vacate a current channel when any one device from the group of communicating devices (1, 2, 3) detects an incumbent, and make a determination as to when the wireless network should vacate the current channel based on said traffic schedule. The method ensures that no interference is caused to existing users and maintains QoS.

摘要翻译： 处理多媒体流数据源的分布式频谱认知无线电无线网络中的源辅助信道管理方法处理形成组的多个通信设备（1,2,3），并且管理没有单独控制器的信道， 适用的IEEE标准。 源代表设备组的预约知道流量调度，并确定带外频道扫描，备份频道和频道休假。 该方法使用灵活的MAC超帧结构，并主动扫描可用于代替当前信道的备用信道，识别当来自通信设备组（1）的任何一个设备时，应当腾出当前信道的组中的设备 ，2,3）检测在线人员，并且基于所述业务调度确定何时无线网络应该腾出当前频道。 该方法确保对现有用户不产生干扰，维护QoS。

公开(公告)号：US20100260085A1

公开(公告)日：2010-10-14

申请号：US12746279

申请日：2008-12-05

申请人： Jianfeng Wang ,  Dave A.T. Cavalcanti ,  Kiran S. Challapali

发明人： Jianfeng Wang ,  Dave A.T. Cavalcanti ,  Kiran S. Challapali

IPC分类号： H04W52/02

CPC分类号： H04W74/02 ,  H04W28/06

摘要： A flexible wireless system and method that support both centralized and distributed modes of MAC protocols, use a new recurring MAC superframe (m) comprising: a beacon period (BP), a data/sense/sleep period (DSSP) for data selective communication, sleep and channel sensing for detecting primary users in cognitive systems; and a signaling window (SW) used for exchanging network entry messages and channel reservation requests, the system including beacon operation, a peer beacon device in distributed mode and a master beacon device in centralized mode which are used to selectively participate in the beacon operation, as well as a slave beacon device associated with the master device. The system may employ controlled channel access for the beacon period, the channel access being reservation based. The invention provides a unified MAC protocol that can be adopted in the standards, and supports flexible operation in distributed mode or centralized mode, and seamless transfer from one to the other.

摘要翻译： 支持集中式和分布式MAC协议模式的灵活的无线系统和方法使用新的循环MAC超帧（m），包括：信标周期（BP），用于数据选择性通信的数据/感测/睡眠周期（DSSP） 用于检测认知系统中的主要用户的睡眠和信道感测; 以及用于交换网络入口消息和信道预留请求的信令窗口（SW），所述系统包括信标操作，分布式模式中的对等信标设备和集中模式的主信标设备，用于选择性地参与信标操作， 以及与主设备相关联的从属信标设备。 该系统可以对信标周期采用受控的信道接入，该信道接入是基于预约的。 本发明提供了一种统一的MAC协议，可以在标准中采用，支持分布式或集中式的灵活运行，无缝转接。