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    • 42. 发明申请
    • WIRELESS SENSOR NETWORKS WITH DATA RECEPTION ACKNOWLEDGEMENT
    • 无线传感器网络与数据接收确认
    • WO2010100445A1
    • 2010-09-10
    • PCT/GB2010/050173
    • 2010-02-04
    • FUJITSU LIMITEDABEDI, SaiedCHEBBO, Hind
    • ABEDI, SaiedCHEBBO, Hind
    • H04L1/16
    • H04L1/1607H04L2001/0092
    • A method for monitoring a living body or other entity using a body area network of devices (10, 11-1, 11-2), each of the devices arranged to perform a data transfer with another device in the network by sequentially receiving or transmitting frames of data, and operable to acknowledge receipt of at least one frame from the other device by sending an acknowledgement frame. The method includes defining a plurality of acknowledgement frames of different types including an immediate acknowledgement frame (Immediate Ack) to be sent upon receipt of each individual frame (Data 1,..., Data n) of a data transfer, and a delayed acknowledgement frame (Delayed Ack) to be sent only after completion of the data transfer. Some parameter of the living body is monitored using one or more of the devices which is equipped with a sensor, and the type of acknowledgement frame to be used for acknowledging a data transfer from or to those devices is selected in dependence upon whether or not the parameter is in an emergency condition. The method may be applied, for example, to monitoring of patients in a hospital using MBANs operating in accordance with IEEE 802.15.6.
    • 一种使用身体区域网络(10,11-1,11-2)监测生物体或其他实体的方法,每个设备被布置成通过顺序地接收或发送来与网络中的另一设备执行数据传送 数据帧,并且可操作以通过发送确认帧来确认从另一设备接收至少一个帧。 该方法包括定义多个不同类型的确认帧,包括在接收到数据传送的每个单独帧(数据1,...,数据n)时发送的即时确认帧(即时确认),以及延迟确认 帧(延迟确认)只有在完成数据传输后才能发送。 使用配备有传感器的一个或多个装置监视生物体的一些参数,并且根据是否选择用于确认来自或者到那些装置的数据传送的确认帧的类型来选择 参数处于紧急情况。 该方法可以应用于例如使用根据IEEE 802.15.6操作的MBAN来监测医院中的患者。
    • 43. 发明申请
    • IMPROVEMENTS TO SHORT-RANGE WIRELESS NETWORKS
    • 对无线网络的改进
    • WO2010100014A1
    • 2010-09-10
    • PCT/EP2010/051594
    • 2010-02-09
    • FUJITSU LIMITEDABEDI, SaiedCHEBBO, Hind
    • ABEDI, SaiedCHEBBO, Hind
    • H04W72/12
    • H04W72/1205H04W74/00H04W74/08H04W84/18
    • The invention relates to a wireless network of devices including a network device and a coordinator; the coordinator comprising transmission and reception means for wireless communication; and the network device comprising transmission means and reception means for wireless communication; and control means operable to selectively cause the device to communicate according to two different channel access schemes, a higher throughput scheme and a lower throughput scheme; wherein a trigger is provided in the network for a switch from the lower throughput scheme to the higher throughput scheme, wherein the trigger is determined taking into account the network device's transmission requirements. The transmission requirements may be based on a network according to the present invention, wherein the transmission requirements are defined based on one or more of the following factors: data waiting in the network device's buffer, emergency status of a device, urgency status of a device and battery level.
    • 本发明涉及包括网络设备和协调器的设备的无线网络; 协调器包括用于无线通信的发送和接收装置; 所述网络装置包括发送装置和用于无线通信的接收装置; 以及控制装置,用于选择性地使设备根据两种不同的信道接入方案进行通信,更高的吞吐量方案和较低的吞吐量方案; 其中在所述网络中提供用于交换机的触发从所述较低吞吐量方案到所述较高吞吐量方案,其中,所述触发是考虑到所述网络设备的传输要求而确定的。 传输要求可以基于根据本发明的网络,其中传输要求是基于以下一个或多个因素来定义的:在网络设备的缓冲器中等待的数据,设备的紧急状态,设备的紧急状态 和电池电量。
    • 46. 发明申请
    • PERPENDICULAR MAGNETIC RECORDING MEDIA
    • 全能磁记录媒体
    • WO2009096041A1
    • 2009-08-06
    • PCT/JP2008/051990
    • 2008-01-31
    • FUJITSU LIMITEDAJAN, Antony
    • AJAN, Antony
    • G11B5/738G11B5/851
    • G11B5/732G11B5/7325G11B5/851
    • A novel PdCr alloy layer(Cr%=15 to 60%) is incorporated in between a fcc seed layer and a Ru#2 layer. In this case, a Ru#1 layer, which is incorporated in between the fcc seed layer and the Ru#2 layer in conventional media, is completely eliminated and only a thin Ru#2 (5-10 nm) is deposited on top of the PdCr alloy layer. The grain size control and Ru(0002) is achieved using this thin Ru#2 layer. CoPt based granular layer is deposited directly on top of the Ru#2 layer. In order to maintain a high coercivity like Ru#1/Ru#2 IML(intermediate layer), only a thin Ru#2 IML of 6 nm is sufficient when deposited on the PdCr(3-10nm) alloy layer.
    • 在fcc种子层和Ru#2层之间并入新颖的PdCr合金层(Cr%= 15〜60%)。 在这种情况下,在传统介质中并入fcc种子层和Ru#2层之间的Ru#1层被完全消除,并且只有较薄的Ru#2(5-10nm)沉积在 PdCr合金层。 使用这种薄的Ru#2层实现晶粒尺寸控制和Ru(0002)。 CoPt基颗粒层直接沉积在Ru#2层的顶部。 为了保持如Ru#1 / Ru#2 IML(中间层)的高矫顽力,当沉积在PdCr(3-10nm)合金层上时,只有6nm的薄Ru#2 IML就足够了。
    • 49. 发明申请
    • COMMUNICATION SYSTEMS
    • 通信系统
    • WO2008020164A1
    • 2008-02-21
    • PCT/GB2007/002896
    • 2007-07-31
    • FUJITSU LIMITEDHART, Michael, John, BeemsZHOU, Yuefeng
    • HART, Michael, John, BeemsZHOU, Yuefeng
    • H04Q7/32H04Q7/36
    • H04W72/0406H04B7/2606H04W16/10H04W84/047H04W88/04
    • A transmission method for use in a multi-hop wireless communication system, the system comprising a source apparatus, a destination apparatus and one or more intermediate apparatuses, said source apparatus being operable to transmit information in a communication direction along a series of links forming a communication path extending from the source apparatus to the destination apparatus via the or each intermediate apparatus, and the or each intermediate apparatus being operable to receive information from a previous apparatus along the path and to transmit the received information to a subsequent apparatus along the path, the system having access to a time-frequency format for use in assigning available transmission frequency bandwidth for transmission in the communication direction during a discrete transmission interval, said format defining a plurality of transmission windows within such an interval, each window occupying a different part of that interval and having a frequency bandwidth profile within said available transmission frequency bandwidth over its part of that interval, each said window being assignable for such a transmission interval to one of said apparatuses for use in transmission, the method comprising: transmitting reservation information for use in a particular such transmission interval from a first one of said apparatuses to a second one of said apparatuses, the second apparatus being the or one of the intermediate apparatuses, and the reservation information specifying at least one transmission window to be reserved of the particular transmission interval; and in the second apparatus, reserving the specified window(s) of the particular transmission interval in dependence upon the received reservation information.
    • 一种在多跳无线通信系统中使用的传输方法,所述系统包括源设备,目的地设备和一个或多个中间设备,所述源设备可操作以沿着一系列链路传送信息,所述链路形成 通信路径经由或每个中间设备从源设备延伸到目的地设备,并且所述或每个中间设备可操作以沿着路径从先前设备接收信息,并将所接收的信息发送到沿路径的后续设备, 所述系统具有访问时间频率格式,用于在离散传输间隔期间在通信方向上分配用于传输的可用传输频率带宽,所述格式在这样的间隔内定义多个传输窗口,每个窗口占据 该间隔并具有频率b 所述可用传输频率带宽中的宽度分布和所述可用传输频率带宽中的每个所述窗口可分配给用于传输的所述设备之一的这种传输间隔,所述方法包括:发送用于特定这样的传输间隔的预留信息 从所述装置中的第一装置到所述装置中的第二装置,所述第二装置是所述中间装置之一或其中之一,所述预约信息指定要预留所述特定传输间隔的至少一个传输窗口; 并且在第二装置中,根据所接收的预约信息来保留特定传输间隔的指定窗口。