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公开(公告)号：US20120115505A1
公开(公告)日：2012-05-10
申请号：US13291722
申请日：2011-11-08
IPC分类号： H04W24/00
摘要： Methods and apparatuses are disclosed herein for population tracking, counting and/or movement estimation. In one embodiment, the method comprises receiving mobile phone operational data indicative of user equipment location, where the event data includes location area update messages and periodic registration messages; and performing travel estimation based on the mobile phone operation data, including performing interpolation on data associated with one or more individuals in a population to estimate intermediate positions of a trajectory of each of the one or more individuals for a specified time period based on a shortest path mesh sequence estimation algorithm.
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公开(公告)号：US08559976B2
公开(公告)日：2013-10-15
申请号：US13291722
申请日：2011-11-08
摘要： Methods and apparatuses are disclosed herein for population tracking, counting and/or movement estimation. In one embodiment, the method comprises receiving mobile phone operational data indicative of user equipment location, where the event data includes location area update messages and periodic registration messages; and performing travel estimation based on the mobile phone operation data, including performing interpolation on data associated with one or more individuals in a population to estimate intermediate positions of a trajectory of each of the one or more individuals for a specified time period based on a shortest path mesh sequence estimation algorithm.
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3.发明授权System and method for inter-cell interference avoidance in co-channel networks 有权同频道网络中小区间干扰避免的系统和方法公开(公告)号：US08442541B2
公开(公告)日：2013-05-14
申请号：US13073137
申请日：2011-03-28
申请人： Ismail Guvenc , Moo Ryong Jeong , Fujio Watanabe
发明人： Ismail Guvenc , Moo Ryong Jeong , Fujio Watanabe
IPC分类号： H04W24/08
CPC分类号： H04W72/1231 , H04L5/0032 , H04L5/0058
摘要： Systems and methods are provided for a distributed inter-cell interference avoidance (ICIA) technique for avoiding co-channel interference between femtocell networks and macrocell networks. At the macrocell, user equipments sense the downlink (DL) spectrum and detects whether there are any nearby interfering femtocells. If there is any interference, a macrocell base station appropriately re-schedules the DL resources and also uses a mapping function to re-schedule uplink (UL) resources based on the re-scheduled DL resources. At the femtocell, a femtocell base station senses the UL spectrum to detect for interference from nearby macrocell users. If there is interference, femtocell gives priority for use of the resources to the macrocell by releasing UL resources. Femtocell may also use the same mapping function to obtain the DL resources used by the macrocell and to re-schedule DL and UL resources of the femtocell to avoid using the DL and UL resources of the macrocell.
摘要翻译： 提供了用于分散小区间干扰避免（ICIA）技术的系统和方法，用于避免毫微微小区网络与宏小区网络之间的同信道干扰。 在宏小区，用户设备检测下行链路（DL）频谱，并检测是否有任何附近的干扰毫微微小区。 如果存在干扰，则宏小区基站适当地重新调度DL资源，并且还使用映射函数来基于重新调度的DL资源重新调度上行链路（UL）资源。 毫微微小区，毫微微小区基站感测到UL频谱以检测来自附近的宏小区用户的干扰。 如果存在干扰，则通过释放UL资源，毫微微小区优先地向宏小区使用资源。 毫微微小区也可以使用相同的映射函数来获得由宏小区使用的DL资源，并重新调度毫微微小区的DL和UL资源，以避免使用宏小区的DL和UL资源。
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公开(公告)号：US20120003985A1
公开(公告)日：2012-01-05
申请号：US13171905
申请日：2011-06-29
申请人： Ismail Guvenc , Moo Ryong Jeong , Fujio Watanabe
发明人： Ismail Guvenc , Moo Ryong Jeong , Fujio Watanabe
IPC分类号： H04W72/04
CPC分类号： H04W56/0015 , H04W84/045 , Y02D70/1262
摘要： Co-channel macrocell users will inherently produce co-channel interference at a nearby femtocell base station. To reduce the peak co-channel interference power, the femtocell users adjust their symbol timing with regard to the macrocell users so as to maximize a spreading of the co-channel interference spectrum. In this fashion, the peak co-channel interference power is reduced, thereby leading to improved bit error rates for the femtocell users.
摘要翻译： 共同信道宏小区用户将固有地在附近的毫微微小区基站上产生同信道干扰。 为了减小峰值的同信道干扰功率，毫微微小区用户相对于宏小区用户调整其符号定时，以便使同信道干扰频谱的扩展最大化。 以这种方式，峰值同信道干扰功率降低，从而导致针对毫微微小区用户的改进的比特错误率。
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5.发明申请Femtocell Channel Assignment and Power Control for Improved Femtocell Coverage and Efficient Cell Search 有权蜂窝小区信道分配和功率控制，用于改进的毫微微小区覆盖和有效的小区搜索公开(公告)号：US20090291690A1
公开(公告)日：2009-11-26
申请号：US12463307
申请日：2009-05-08
CPC分类号： H04W16/10 , H04W16/30 , H04W52/243 , H04W52/244 , H04W52/343 , H04W52/40 , H04W72/02 , H04W72/0453 , H04W72/082 , H04W84/045
摘要： A method and a communication system including femtocells within a macrocell efficiently manage interference between the different femtocells, and between each femtocell and a macrocell. An efficient frequency assignment scheme for the femtocells minimizes interference between a femtocell and a macrocell and among different femtocells using a spectrum-sensing technique carried out by the femtocells. The frequency assignment scheme selects a suitable channel from a set of candidate channels and ensures that the femtocell has an acceptable coverage area even when it is close to the macrocell base station (BS). The frequency assignment scheme favors a co-channel implementation to take advantage of the hand-off and cell search characteristics of the co-channel implementation. In one embodiment, a joint power control and frequency band assignment technique is used, which partitions the coverage area of the macrocell into an inner region, a power control region, and an outer region. Depending on a femtocell's location, it is assigned a certain power level and a frequency band. Power control may be used within the power-control region while, in the other regions, a fixed transmission power may be used.
摘要翻译： 包括宏小区内的毫微微小区的方法和通信系统有效地管理不同毫微微小区之间以及每个毫微微小区与宏小区之间的干扰。 毫微微小区的有效的频率分配方案使用由毫微微小区执行的频谱感测技术来最小化毫微微小区和宏小区之间以及不同毫微微小区之间的干扰。 频率分配方案从一组候选信道中选择一个合适的信道，并确保毫微微小区即使在接近宏小区基站（BS）时也具有可接受的覆盖区域。 频率分配方案有利于共同信道实现来利用同频道实现的切换和小区搜索特性。 在一个实施例中，使用联合功率控制和频带分配技术，其将宏小区的覆盖区域划分为内部区域，功率控制区域和外部区域。 根据毫微微小区的位置，它被分配一定的功率电平和频带。 功率控制可以在功率控制区域内使用，而在其它区域中可以使用固定的发射功率。
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6.发明授权Femtocell channel assignment and power control for improved femtocell coverage and efficient cell search 有权毫微微小区信道分配和功率控制，用于改进的毫微微小区覆盖和有效的小区搜索公开(公告)号：US08280387B2
公开(公告)日：2012-10-02
申请号：US12463307
申请日：2009-05-08
CPC分类号： H04W16/10 , H04W16/30 , H04W52/243 , H04W52/244 , H04W52/343 , H04W52/40 , H04W72/02 , H04W72/0453 , H04W72/082 , H04W84/045
摘要： A method and a communication system including femtocells within a macrocell efficiently manage interference between the different femtocells, and between each femtocell and a macrocell. An efficient frequency assignment scheme for the femtocells minimizes interference between a femtocell and a macrocell and among different femtocells using a spectrum-sensing technique carried out by the femtocells. The frequency assignment scheme selects a suitable channel from a set of candidate channels and ensures that the femtocell has an acceptable coverage area even when it is close to the macrocell base station (BS). The frequency assignment scheme favors a co-channel implementation to take advantage of the hand-off and cell search characteristics of the co-channel implementation. In one embodiment, a joint power control and frequency band assignment technique is used, which partitions the coverage area of the macrocell into an inner region, a power control region, and an outer region. Depending on a femtocell's location, it is assigned a certain power level and a frequency band. Power control may be used within the power-control region while, in the other regions, a fixed transmission power may be used.
摘要翻译： 包括宏小区内的毫微微小区的方法和通信系统有效地管理不同毫微微小区之间以及每个毫微微小区与宏小区之间的干扰。 毫微微小区的有效的频率分配方案使用由毫微微小区执行的频谱感测技术来最小化毫微微小区和宏小区之间以及不同毫微微小区之间的干扰。 频率分配方案从一组候选信道中选择一个合适的信道，并确保毫微微小区即使在接近宏小区基站（BS）时也具有可接受的覆盖区域。 频率分配方案有利于共同信道实现来利用同频道实现的切换和小区搜索特性。 在一个实施例中，使用联合功率控制和频带分配技术，其将宏小区的覆盖区域划分为内部区域，功率控制区域和外部区域。 根据毫微微小区的位置，它被分配一定的功率电平和频带。 功率控制可以在功率控制区域内使用，而在其它区域中可以使用固定的发射功率。
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7.发明授权Synchronized multi-link transmission in an ARQ-enabled multi-hop wireless network 有权在启用ARQ的多跳无线网络中同步多链路传输公开(公告)号：US08155013B2
公开(公告)日：2012-04-10
申请号：US12258294
申请日：2008-10-24
申请人： Moo Ryong Jeong , Ismail Guvenc , Fujio Watanabe
发明人： Moo Ryong Jeong , Ismail Guvenc , Fujio Watanabe
CPC分类号： H04B7/2606 , H04L1/1877 , H04L1/1887 , H04L2001/0097 , H04W56/0005 , H04W84/20
摘要： A method and apparatus is disclosed herein for synchronized multi-link transmission in an ARQ-enabled multi-hop wireless network. In one embodiment, the method comprises performing pre-transmission of a packet to hops to enable a base station and the plurality of hops in the network to transmit the packet synchronously to one or more mobile stations in the wireless communication system; and performing one or more re-transmissions of the packet at a set of one or more hops forming a path in the network if time remaining before a synchronized transmission time for the path as a whole is greater than a threshold.
摘要翻译： 本文公开了一种在启用ARQ的多跳无线网络中进行同步多链路传输的方法和装置。 在一个实施例中，所述方法包括执行分组的预传输以使基站能够和所述网络中的所述多个跳跃同步地传送到所述无线通信系统中的一个或多个移动台; 以及如果在整个路径的同步传输时间之前剩余的时间大于阈值，则在一个或多个跳跃的组中执行一个或多个组播路径的重传。
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8.发明申请SYSTEM AND METHOD FOR INTER-CELL INTERFERENCE AVOIDANCE IN CO-CHANNEL NETWORKS 有权系统和方法用于同信道网络中的细胞间干扰避免公开(公告)号：US20110237243A1
公开(公告)日：2011-09-29
申请号：US13073137
申请日：2011-03-28
申请人： Ismail Guvenc , Fujio Watanabe , Moo Ryong Jeong
发明人： Ismail Guvenc , Fujio Watanabe , Moo Ryong Jeong
IPC分类号： H04W24/08
CPC分类号： H04W72/1231 , H04L5/0032 , H04L5/0058
摘要： Systems and methods are provided for a distributed inter-cell interference avoidance (ICIA) technique for avoiding co-channel interference between femtocell networks and macrocell networks. At the macrocell, user equipments sense the downlink (DL) spectrum and detects whether there are any nearby interfering femtocells. If there is any interference, a macrocell base station appropriately re-schedules the DL resources and also uses a mapping function to re-schedule uplink (UL) resources based on the re-scheduled DL resources. At the femtocell, a femtocell base station senses the UL spectrum to detect for interference from nearby macrocell users. If there is interference, femtocell gives priority for use of the resources to the macrocell by releasing UL resources. Femtocell may also use the same mapping function to obtain the DL resources used by the macrocell and to re-schedule DL and UL resources of the femtocell to avoid using the DL and UL resources of the macrocell.
摘要翻译： 提供了用于分散小区间干扰避免（ICIA）技术的系统和方法，用于避免毫微微小区网络与宏小区网络之间的同信道干扰。 在宏小区，用户设备检测下行链路（DL）频谱，并检测是否有任何附近的干扰毫微微小区。 如果存在干扰，则宏小区基站适当地重新调度DL资源，并且还使用映射函数来基于重新调度的DL资源重新调度上行链路（UL）资源。 毫微微小区，毫微微小区基站感测到UL频谱以检测来自附近的宏小区用户的干扰。 如果存在干扰，则通过释放UL资源，毫微微小区优先地向宏小区使用资源。 毫微微小区也可以使用相同的映射函数来获得由宏小区使用的DL资源，并重新调度毫微微小区的DL和UL资源，以避免使用宏小区的DL和UL资源。
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9.发明申请SYNCHRONIZED MULTI-LINK TRANSMISSION IN AN ARQ-ENABLED MULTI-HOP WIRELESS NETWORK 有权在ARQ启用的多人无线网络中同步多链路传输公开(公告)号：US20090116420A1
公开(公告)日：2009-05-07
申请号：US12258294
申请日：2008-10-24
申请人： Moo Ryong Jeong , Ismail Guvenc , Fujio Watanabe
发明人： Moo Ryong Jeong , Ismail Guvenc , Fujio Watanabe
IPC分类号： H04H20/71
CPC分类号： H04B7/2606 , H04L1/1877 , H04L1/1887 , H04L2001/0097 , H04W56/0005 , H04W84/20
摘要： A method and apparatus is disclosed herein for synchronized multi-link transmission in an ARQ-enabled multi-hop wireless network. In one embodiment, the method comprises performing pre-transmission of a packet to hops to enable a base station and the plurality of hops in the network to transmit the packet synchronously to one or more mobile stations in the wireless communication system; and performing one or more re-transmissions of the packet at a set of one or more hops forming a path in the network if time remaining before a synchronized transmission time for the path as a whole is greater than a threshold.
摘要翻译： 本文公开了一种在启用ARQ的多跳无线网络中进行同步多链路传输的方法和装置。 在一个实施例中，所述方法包括执行分组的预传输以使基站能够和所述网络中的所述多个跳跃同步地传送到所述无线通信系统中的一个或多个移动台; 以及如果在整个路径的同步传输时间之前剩余的时间大于阈值，则在一个或多个跳跃的组中执行一个或多个组播路径的重传。
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10.发明授权Methods for enhancing performance of open-access and closed-access femtocells 有权用于增强开放接入和封闭接入毫微微蜂窝基站的性能的方法公开(公告)号：US08452293B2
公开(公告)日：2013-05-28
申请号：US13563449
申请日：2012-07-31
申请人： Ismail Guvenc , Fujio Watanabe
发明人： Ismail Guvenc , Fujio Watanabe
IPC分类号： H04W40/00
CPC分类号： H04W36/04 , H04W36/165 , H04W84/045
摘要： In a system including one or more femtocells within a service area of a macrocell, a method includes: (a) receiving from a base station information regarding available resources at each femtocell; (b) measuring a signal-interference-to-noise ratio (SINR) at a mobile station relative to the macrocell and each femtocell; and (c) selecting for the mobile station one of the femtocells for a hand-off, wherein the femtostation is selected based on the combined capacity of the macrocell and the femtocells after the hand-off.
摘要翻译： 在包括在宏小区的服务区域内的一个或多个毫微微小区的系统中，一种方法包括：（a）从基站接收关于每个毫微微小区上的可用资源的信息; （b）测量移动站相对于宏小区和每个毫微微小区的信号 - 干扰信噪比（SINR）; 以及（c）为所述移动台选择所述毫微微小区之一用于切换，其中，所述毫微微站是基于所述宏小区和所述毫微微小区在所述切换后的组合容量来选择的。
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