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    Path selection for a wireless system with relays
    11.
    发明授权
    Path selection for a wireless system with relays 有权
    带有继电器的无线系统的路径选择

    公开(公告)号：US08144597B2

    公开(公告)日：2012-03-27

    申请号：US12347002

    申请日：2008-12-31

    申请人： Nimal Gamini Senarath ,  Derek Yu ,  Hang Zhang ,  Israfil Bahceci ,  Peiying Zhu ,  Wen Tong

    发明人： Nimal Gamini Senarath ,  Derek Yu ,  Hang Zhang ,  Israfil Bahceci ,  Peiying Zhu ,  Wen Tong

    IPC分类号： G01R31/08

    CPC分类号： H04W40/22 ,  H04B7/155 ,  H04L41/5003 ,  H04L41/5087 ,  H04L45/122 ,  H04L45/22 ,  H04W40/02 ,  Y02D70/1222 ,  Y02D70/124 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/30 ,  Y02D70/39 ,  Y02D70/446

    摘要： A method selects a path for forwarding a data packet in a wireless communication system. A system capacity versus delay impact curve is calculated for a direct path to mobile station. The direct path has a capacity cost based on communication quality of a direct link between a base station and the mobile station. This curve is shifted by a predetermined time corresponding to an additional delay over a relay path to produce a projected capacity curve for the relay path having a second capacity cost determined according to a combined measure of signal quality of multiple links in the relay path. The second capacity cost is multiplied by a capacity cost ratio to produce a relay capacity curve. The direct path or the relay path is selected based on a comparison of the system capacity versus delay impact curve and the relay capacity curve according to a QoS requirement.

    摘要翻译： 一种方法选择用于在无线通信系统中转发数据分组的路径。 针对移动台的直接路径计算系统容量对延迟影响曲线。 直接路径具有基于基站和移动站之间的直接链路的通信质量的容量成本。 该曲线偏移了与继电器路径上的附加延迟相对应的预定时间，以产生具有根据中继路径中的多个链路的信号质量的组合测量确定的第二容量成本的中继路径的投影容量曲线。 第二容量成本乘以容量成本比来产生继电器容量曲线。 根据QoS要求，基于系统容量与延迟冲击曲线和中继容量曲线的比较来选择直接路径或中继路径。

    Path Selection For A Wireless System With Relays
    12.
    发明申请
    Path Selection For A Wireless System With Relays 有权
    具有继电器的无线系统的路径选择

    公开(公告)号：US20130010601A1

    公开(公告)日：2013-01-10

    申请号：US13619745

    申请日：2012-09-14

    申请人： Nimal Gamini Senarath ,  Derek Yu ,  Hang Zhang ,  Israfil Bahceci ,  Peiying Zhu ,  Wen Tong

    发明人： Nimal Gamini Senarath ,  Derek Yu ,  Hang Zhang ,  Israfil Bahceci ,  Peiying Zhu ,  Wen Tong

    IPC分类号： H04W28/08

    CPC分类号： H04W40/22 ,  H04B7/155 ,  H04L41/5003 ,  H04L41/5087 ,  H04L45/122 ,  H04L45/22 ,  H04W40/02 ,  Y02D70/1222 ,  Y02D70/124 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/30 ,  Y02D70/39 ,  Y02D70/446

    摘要： A method selects a path for forwarding a data packet in a wireless communication system. A system capacity versus delay impact curve is calculated for a direct path to mobile station. The direct path has a capacity cost based on communication quality of a direct link between a base station and the mobile station. This curve is shifted by a predetermined time corresponding to an additional delay over a relay path to produce a projected capacity curve for the relay path having a second capacity cost determined according to a combined measure of signal quality of multiple links in the relay path. The second capacity cost is multiplied by a capacity cost ratio to produce a relay capacity curve. The direct path or the relay path is selected based on a comparison of the system capacity versus delay impact curve and the relay capacity curve according to a QoS requirement.

    摘要翻译： 一种方法选择用于在无线通信系统中转发数据分组的路径。 针对移动台的直接路径计算系统容量对延迟影响曲线。 直接路径具有基于基站和移动站之间的直接链路的通信质量的容量成本。 该曲线偏移了与继电器路径上的附加延迟相对应的预定时间，以产生具有根据中继路径中的多个链路的信号质量的组合测量确定的第二容量成本的中继路径的投影容量曲线。 第二容量成本乘以容量成本比来产生继电器容量曲线。 根据QoS要求，基于系统容量与延迟冲击曲线和中继容量曲线的比较来选择直接路径或中继路径。

    Path selection for a wireless system with relays
    13.
    发明授权
    Path selection for a wireless system with relays 有权
    带有继电器的无线系统的路径选择

    公开(公告)号：US08687499B2

    公开(公告)日：2014-04-01

    申请号：US13619745

    申请日：2012-09-14

    申请人： Nimal Gamini Senarath ,  Derek Yu ,  Hang Zhang ,  Israfil Bahceci ,  Peiying Zhu ,  Wen Tong

    发明人： Nimal Gamini Senarath ,  Derek Yu ,  Hang Zhang ,  Israfil Bahceci ,  Peiying Zhu ,  Wen Tong

    IPC分类号： G01R31/08

    CPC分类号： H04W40/22 ,  H04B7/155 ,  H04L41/5003 ,  H04L41/5087 ,  H04L45/122 ,  H04L45/22 ,  H04W40/02 ,  Y02D70/1222 ,  Y02D70/124 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/30 ,  Y02D70/39 ,  Y02D70/446

    摘要： A method selects a path for forwarding a data packet in a wireless communication system. A system capacity versus delay impact curve is calculated for a direct path to mobile station. The direct path has a capacity cost based on communication quality of a direct link between a base station and the mobile station. This curve is shifted by a predetermined time corresponding to an additional delay over a relay path to produce a projected capacity curve for the relay path having a second capacity cost determined according to a combined measure of signal quality of multiple links in the relay path. The second capacity cost is multiplied by a capacity cost ratio to produce a relay capacity curve. The direct path or the relay path is selected based on a comparison of the system capacity versus delay impact curve and the relay capacity curve according to a QoS requirement.

    摘要翻译： 一种方法选择用于在无线通信系统中转发数据分组的路径。 针对移动台的直接路径计算系统容量对延迟影响曲线。 直接路径具有基于基站和移动站之间的直接链路的通信质量的容量成本。 该曲线偏移了与继电器路径上的附加延迟相对应的预定时间，以产生具有根据中继路径中的多个链路的信号质量的组合测量确定的第二容量成本的中继路径的投影容量曲线。 第二容量成本乘以容量成本比来产生继电器容量曲线。 根据QoS要求，基于系统容量与延迟冲击曲线和中继容量曲线的比较来选择直接路径或中继路径。

    POWER CONTROL AT A RELAY STATION IN A WIRELESS NETWORK
    14.
    发明申请
    POWER CONTROL AT A RELAY STATION IN A WIRELESS NETWORK 有权
    无线网络中继电器的功率控制

    公开(公告)号：US20130010680A1

    公开(公告)日：2013-01-10

    申请号：US13620087

    申请日：2012-09-14

    申请人： Nimal Senarath ,  David Steer ,  Derek Yu ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Israfil Bahceci

    发明人： Nimal Senarath ,  David Steer ,  Derek Yu ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Israfil Bahceci

    IPC分类号： H04W52/04 ,  H04W88/04

    CPC分类号： H04B7/2606 ,  H04B7/15535

    摘要： A wireless network includes a base station and a relay station for extending wireless coverage of the base station. Downlink data is sent by the base station and relayed through the relay station to a mobile station, where the downlink data is associated with a preamble that is sent directly from the base station to the mobile station. A transmit power of the relay station is adjusted for transmitting the downlink data from the relay station to the mobile station to reduce a difference between a first power level of the preamble received at the mobile station and a second power level of the downlink data received at the mobile station. The uplink transmit power of the mobile station t for the data sent to the relay station is adjusted to compensate for the difference in path loss from mobile station to base station and mobile station to relay station and to compensate for the difference in noise_plus_interference level at relay station compared to that of the base station.

    摘要翻译： 无线网络包括用于扩展基站的无线覆盖的基站和中继站。 下行链路数据由基站发送并通过中继站中继至移动台，移动台与下行链路数据相关联，前导码直接从基站发送到移动台。 调整中继站的发射功率，以将下行链路数据从中继站发送到移动台，以减少在移动台处接收到的前导码的第一功率电平与第一功率电平之间的差异， 移动台。 调整发送到中继站的数据的移动站t的上行发送功率，以补偿从移动站到基站和移动站到中继站的路径损耗差异，并补偿中继站的noise_plus_interference等级的差异 站与基站相比。

    Power control at a relay station in a wireless network
    15.
    发明授权
    Power control at a relay station in a wireless network 有权
    在无线网络中的中继站进行功率控制

    公开(公告)号：US08320826B2

    公开(公告)日：2012-11-27

    申请号：US12197767

    申请日：2008-08-25

    申请人： Nimal Senarath ,  David Steer ,  Derek Yu ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Israfil Bahceci

    发明人： Nimal Senarath ,  David Steer ,  Derek Yu ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Israfil Bahceci

    IPC分类号： H04B3/36

    CPC分类号： H04B7/2606 ,  H04B7/15535

    摘要： A wireless network includes a base station and a relay station for extending wireless coverage of the base station. Downlink data is sent by the base station and relayed through the relay station to a mobile station, where the downlink data is associated with a preamble that is sent directly from the base station to the mobile station. A transmit power of the relay station is adjusted for transmitting the downlink data from the relay station to the mobile station to reduce a difference between a first power level of the preamble received at the mobile station and a second power level of the downlink data received at the mobile station. The uplink transmit power of the mobile station for the data sent to the relay station is adjusted to compensate for the difference in path loss from mobile station to base station and mobile station to relay station and to compensate for the difference in noise_plus_interference level at relay station compared to that of the base station.

    摘要翻译： 无线网络包括用于扩展基站的无线覆盖的基站和中继站。 下行链路数据由基站发送并通过中继站中继至移动台，移动台与下行链路数据相关联，前导码直接从基站发送到移动台。 调整中继站的发射功率，以将下行链路数据从中继站发送到移动台，以减少在移动台处接收到的前导码的第一功率电平与第一功率电平之间的差异， 移动台。 调整发送到中继站的数据的移动站的上行发送功率，以补偿从移动站到基站和移动站到中继站的路径损耗差异，并补偿中继站的noise_plus_interference等级的差异 与基站相比。

    Power control at a relay station in a wireless network
    16.
    发明授权
    Power control at a relay station in a wireless network 有权
    在无线网络中的中继站进行功率控制

    公开(公告)号：US09225415B2

    公开(公告)日：2015-12-29

    申请号：US13620087

    申请日：2012-09-14

    申请人： Nimal Senarath ,  David Steer ,  Derek Yu ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Israfil Bahceci

    发明人： Nimal Senarath ,  David Steer ,  Derek Yu ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Israfil Bahceci

    IPC分类号： H04J1/16 ,  H04B7/26 ,  H04B7/155

    CPC分类号： H04B7/2606 ,  H04B7/15535

    摘要： A wireless network includes a base station and a relay station for extending wireless coverage of the base station. Downlink data is sent by the base station and relayed through the relay station to a mobile station, where the downlink data is associated with a preamble that is sent directly from the base station to the mobile station. A transmit power of the relay station is adjusted for transmitting the downlink data from the relay station to the mobile station to reduce a difference between a first power level of the preamble received at the mobile station and a second power level of the downlink data received at the mobile station. The uplink transmit power of the mobile station for the data sent to the relay station is adjusted to compensate for the difference in path loss from mobile station to base station and mobile station to relay station and to compensate for the difference in noise_plus_interference level at relay station compared to that of the base station.

    摘要翻译： 无线网络包括用于扩展基站的无线覆盖的基站和中继站。 下行链路数据由基站发送并通过中继站中继至移动台，移动台与下行链路数据相关联，前导码直接从基站发送到移动台。 调整中继站的发射功率，以将下行链路数据从中继站发送到移动台，以减少在移动台处接收到的前导码的第一功率电平与第一功率电平之间的差异， 移动台。 调整发送到中继站的数据的移动站的上行发送功率，以补偿从移动站到基站和移动站到中继站的路径损耗差异，并补偿中继站的noise_plus_interference等级的差异 与基站相比。

    Power Control at a Relay Station in a Wireless Network
    17.
    发明申请
    Power Control at a Relay Station in a Wireless Network 有权
    无线网络中继站的功率控制

    公开(公告)号：US20090053994A1

    公开(公告)日：2009-02-26

    申请号：US12197767

    申请日：2008-08-25

    申请人： Nimal Senarath ,  David Steer ,  Derek Yu ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Israfil Bahceci

    发明人： Nimal Senarath ,  David Steer ,  Derek Yu ,  Hang Zhang ,  Peiying Zhu ,  Wen Tong ,  Israfil Bahceci

    IPC分类号： H04B7/15

    CPC分类号： H04B7/2606 ,  H04B7/15535

    摘要： A wireless network includes a base station and a relay station for extending wireless coverage of the base station. Downlink data is sent by the base station and relayed through the relay station to a mobile station, where the downlink data is associated with a preamble that is sent directly from the base station to the mobile station. A transmit power of the relay station is adjusted for transmitting the downlink data from the relay station to the mobile station to reduce a difference between a first power level of the preamble received at the mobile station and a second power level of the downlink data received at the mobile station. The uplink transmit power of the mobile station for the data sent to the relay station is adjusted to compensate for the difference in path loss from mobile station to base station and mobile station to relay station and to compensate for the difference in noise_plus_interference level at relay station compared to that of the base station.

    摘要翻译： 无线网络包括用于扩展基站的无线覆盖的基站和中继站。 下行链路数据由基站发送并通过中继站中继至移动台，移动台与下行链路数据相关联，前导码直接从基站发送到移动台。 调整中继站的发射功率，以将下行链路数据从中继站发送到移动台，以减少在移动台处接收到的前导码的第一功率电平与第一功率电平之间的差异， 移动台。 调整发送到中继站的数据的移动站的上行发送功率，以补偿从移动站到基站和移动站到中继站的路径损耗差异，并补偿中继站的noise_plus_interference等级的差异 与基站相比。

    Wireless access point security for multi-hop networks
    19.
    发明授权
    Wireless access point security for multi-hop networks 有权
    多跳网络的无线接入点安全

    公开(公告)号：US08468338B2

    公开(公告)日：2013-06-18

    申请号：US12307695

    申请日：2007-07-06

    申请人： Hang Zhang ,  Peiying Zhu ,  Mo-Han Fong ,  Wen Tong ,  Gamini Senarath ,  Derek Yu ,  David Steer

    发明人： Hang Zhang ,  Peiying Zhu ,  Mo-Han Fong ,  Wen Tong ,  Gamini Senarath ,  Derek Yu ,  David Steer

    IPC分类号： H04L29/06

    CPC分类号： H04W12/02 ,  H04B7/155 ,  H04L63/0428 ,  H04L63/0464 ,  H04L63/0478 ,  H04W28/16 ,  H04W84/18 ,  H04W88/04 ,  H04W88/08

    摘要： Security in wireless communication networks that employ relay stations to facilitate communications between base stations and mobile stations is enhanced. In one embodiment, resource information provided to one or more relay stations from a base station or another relay station is encrypted prior to being delivered to the one or more relay stations. Only authorized relay stations are allocated an appropriate key necessary to decrypt the resource information. As such, only appropriate relay stations are able to access and use the resource information to effect communications directly or indirectly between the base stations and the mobile stations. In certain embodiments, the resource information is delivered between the various base and relay stations using either unicast or multicast delivery techniques.

    摘要翻译： 增强了使用中继站以促进基站和移动台之间的通信的无线通信网络中的安全性。 在一个实施例中，在被传送到一个或多个中继站之前，将从基站或另一中继站提供给一个或多个中继站的资源信息进行加密。 只有授权的中继站才能分配解密资源信息所需的适当的密钥。 因此，只有适当的中继站能够访问和使用资源信息来直接或间接地在基站和移动台之间进行通信。 在某些实施例中，使用单播或多播递送技术在各种基站和中继站之间传送资源信息。