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    • 2. 发明申请
    • CHANNEL MANAGEMENT METHOD IN A DISTRIBUTED SPECTRUM COGNITIVE RADIO NETWORK
    • 分布式光谱认证无线电网络中的信道管理方法
    • WO2009072087A1
    • 2009-06-11
    • PCT/IB2008/055126
    • 2008-12-05
    • KONINKLIJKE PHILIPS ELECTRONICS, N.V.CHALLAPALI, Kiran, S.WANG, Jianfeng
    • CHALLAPALI, Kiran, S.WANG, Jianfeng
    • H04W28/18
    • H04W72/085H04W16/14H04W36/06
    • 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.
    • 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。
    • 4. 发明申请
    • METHOD FOR IMPROVING SELF-COEXISTENCE OF WIRELESS COMMUNICATION NETWORKS
    • 改善无线通信网络自相似性的方法
    • WO2007031960A2
    • 2007-03-22
    • PCT/IB2006053296
    • 2006-09-14
    • KONINKL PHILIPS ELECTRONICS NVCORDEIRO CARLOSCHALLAPALI KIRAN
    • CORDEIRO CARLOSCHALLAPALI KIRAN
    • H04W16/14H04W72/12
    • H04W16/14H04W72/1257
    • Self-coexistence of first and second wireless communication networks (200) is improved by transmitting a coexistence beacon from a first station (210, 220) of the first wireless communication network (200) to a first station (210, 220) of the second wireless communication network (200). The coexistence beacon includes information about a traffic reservation of the first station (210, 220) of the first wireless communication network (200). The first station (210, 220) of the second wireless communication network (200) may then use this information in a variety of ways to reduce data collisions between the two networks (200). It can communicate this information to a base station (210) of the second wireless communication network (200). The base station (210) of the second wireless communication network (200) can then use this information to more efficiently allocate frequency channels and/or time slots for future traffic reservations of the first station (220) of the second wireless communication network (200).
    • 通过将来自第一无线通信网络(200)的第一站(210,220)的共存信标发送到第二无线通信网络(200)的第一站(210,220)来改善第一和第二无线通信网络(200)的自共存 无线通信网络(200)。 共存信标包括关于第一无线通信网络(200)的第一站(210,220)的业务预留的信息。 然后,第二无线通信网络(200)的第一站(210,220)可以以各种方式使用该信息来减少两个网络(200)之间的数据冲突。 它可以将该信息传送到第二无线通信网络(200)的基站(210)。 然后,第二无线通信网络(200)的基站(210)可以使用该信息来更有效地分配用于第二无线通信网络(200)的第一站(220)的未来业务预留的频率信道和/或时隙 )。
    • 9. 发明申请
    • MULTIPLE CHANNEL SUPPORT IN DISTRIBUTED WIRELESS SYSTEMS
    • 分布式无线系统中的多信道支持
    • WO2009072088A2
    • 2009-06-11
    • PCT/IB2008055127
    • 2008-12-05
    • KONINKL PHILIPS ELECTRONICS NVWANG JIANFENGCHALLAPALI KIRAN S
    • WANG JIANFENGCHALLAPALI KIRAN S
    • H04W56/00
    • H04W72/1278H04W16/14H04W48/08H04W56/0015H04W56/003H04W88/06
    • 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.
    • 为了促进分布式控制无线电网络上的多信道通信,对多个基本上独立的信道上的网络的定时进行调整(350),以便在网络之间建立公共时间基准。 利用这个共同的时基,使用由多个网络提供的带宽同时发送数据(230)。 为了进一步优化该技术对认知无线电网络的效率,调度每个网络上的安静周期(QP)和信令窗口(SW)(355)以提供重叠安静周期(QP)和/或重叠信令窗口(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)中被分配(360)相同的时隙,由此促进有效的信标传输和接收。
    • 10. 发明申请
    • DISTRIBUTED SCHEDULING OF QUIET-PERIOD FOR IN-SERVICE CHANNEL MONITORING
    • 静态通道监测的静态分布式调度
    • WO2009069069A2
    • 2009-06-04
    • PCT/IB2008/054930
    • 2008-11-24
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.WANG, JianfengCHALLAPALI, Kiran, S.
    • WANG, JianfengCHALLAPALI, Kiran, S.
    • H04W16/14
    • H04W16/14H04L43/00H04W72/1231
    • 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.
    • 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),所述参数(125)指示设备需要的常规静默期的最小静默期感测需求 可靠地检测主要用户(290)。 网络中的每个设备(200)调整其安静周期感测速率以适应最高的最小感测需求(155,160),从而相对于安静周期支持提供最佳效率,同时确保网络中的所有设备(200) 至少提供了它们的最小静默期感测需求(150)。 常规安静时段之间的时间间隔和这些安静时段的时间间隔在网络上的设备之间进行协商(155)。 静默期索引(140)用于将所有设备同步到共同的时基。 还提供了技术来有效地协调按需静默期请求,并为多个主要用户类别支持不同的静默期计划。