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31.发明授权Mobility control method mitigating inter cell interference and base stations which adopt the method 有权采用该方法的移动性控制方法减轻小区间干扰和基站公开(公告)号：US09161277B2
公开(公告)日：2015-10-13
申请号：US13025275
申请日：2011-02-11
CPC分类号： H04W36/20 , H04W36/0083
摘要： Interference applied to neighbor cells during terminal handovers can be reduced in wireless communication systems containing base stations having different cell sizes. A serving cell makes handover judgment criteria easier based on pre-acquired cell size information on its own cell and cell size information of neighbor cells in order to facilitate terminal handovers from a base station with a large cell size to a base station with a small cell size. The serving cell finds evaluation function values based on the propagation state (e.g. reference signal received power) between the terminal and target cell, and the interference and load information exchanged between the base stations, and selects the terminal for handover by comparing the evaluation function value with the handover criteria value. The system selects a target cell having a good effect in lowering interference such as a cell with large reference signal received power acquired from a terminal, to serve as the handover destination.
摘要翻译： 在包含具有不同小区大小的基站的无线通信系统中，可以减少在终端切换期间应用于相邻小区的干扰。 为了便于从具有大小区大小的基站到具有小小区的基站的终端切换，服务小区基于对其自己的小区的预获取小区大小信息和相邻小区的小区大小信息来更容易地进行切换判断准则 尺寸。 服务小区基于终端与目标小区之间的传播状态（例如，参考信号接收功率）以及基站之间交换的干扰和负载信息来找到评估函数值，并通过比较评估函数值来选择切换终端 具有切换标准值。 该系统选择具有从终端获取的具有大的参考信号接收功率的小区等降低干扰效果的目标小区，作为切换目的地。
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公开(公告)号：US08849281B2
公开(公告)日：2014-09-30
申请号：US13283128
申请日：2011-10-27
申请人： Keisuke Takeuchi , Rintaro Katayama
发明人： Keisuke Takeuchi , Rintaro Katayama
IPC分类号： H04W36/00
CPC分类号： H04W52/244 , H04W16/14 , H04W24/10 , H04W36/20 , H04W36/30 , H04W84/045
摘要： When a femto cell base station detects an intense uplink interference, the femto cell base station autonomously extends the femto cell so as to raise a probability that a mobile terminal around the original femto cell may be connected to the femto cell base station. If the mobile terminal connects to the femto cell base station, the uplink interference is reduced and total throughput is improved. Additionally, if a resultant effect of interference reduction is low, the femto cell base station returns the mobile terminal, which is connected to the femto cell base station due to the extension of the femto cell, to the original connection destination. If an evaluative criterion meets a predetermined condition, the femto cell base station restores the extended femto cell to the original size. These actions prevent degradation of performance caused by concentration of the connections of mobile terminals to the femto cell base station.
摘要翻译： 当毫微微小区基站检测到强烈的上行链路干扰时，毫微微小区基站自主地扩展毫微微小区，以提高原始毫微微小区周围的移动终端可能连接到毫微微小区基站的概率。 如果移动终端连接到毫微微小区基站，则降低上行链路干扰，提高总吞吐量。 此外，如果干扰减少的结果效果低，则毫微微小区基站将由于毫微微小区的扩展而连接到毫微微小区基站的移动终端返回到原始连接目的地。 如果评估标准满足预定条件，则毫微微小区基站将扩展毫微微小区恢复到原始大小。 这些动作防止移动终端与毫微微小区基站的连接集中引起的性能下降。
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公开(公告)号：US08744362B2
公开(公告)日：2014-06-03
申请号：US13152036
申请日：2011-06-02
CPC分类号： H04W72/082 , H04B2201/70702 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04W16/32 , H04W28/18 , H04W84/045
摘要： A cellular radio communication system includes a first mobile terminal, a base station that performs radio communication with first mobile terminals, a second mobile terminal, and a second base station that performs radio communication with second mobile terminals. In the downlink communication, the base station selects a high data rate mode when the radio interference from the base station to the second mobile terminals that are located close to an edge of a communication area of the second base station is small. The base station selects an interference mitigation mode in the downlink communication when the radio interference from the base station to the second mobile terminals that are located close to the edge of the communication area of the second base station is large. Thus, inter-cell interference control can be performed in collaboration with base stations in the radio communication system without having communication interface between the base stations.
摘要翻译： 蜂窝无线电通信系统包括第一移动终端，与第一移动终端进行无线通信的基站，第二移动终端以及与第二移动终端进行无线通信的第二基站。 在下行链路通信中，当从基站到位于第二基站的通信区域的边缘附近的第二移动终端的无线电干扰小时，基站选择高数据速率模式。 当基站到位于第二基站的通信区域的边缘附近的第二移动终端的无线电干扰较大时，基站选择下行链路通信中的干扰减轻模式。 因此，可以与无线通信系统中的基站协作地执行小区间干扰控制，而不需要基站之间的通信接口。
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34.发明授权公开(公告)号：US08660049B2
公开(公告)日：2014-02-25
申请号：US13015810
申请日：2011-01-28
CPC分类号： H04W72/005 , H04L5/0032 , H04L5/0035 , H04L5/0051 , H04L5/0053 , H04L5/0096
摘要： In a time slot in which a first base station for performing a multicast transmission executes the multicast transmission, a second base station which does not perform the multicast transmission does not perform a unicast data transmission. The time slot in which the first base station performs the multicast transmission is notified to the second base station from a multicast control apparatus for performing scheduling of the multicast transmission to the first base station. Information to receive the multicast transmission is notified from the second base station to a terminal connected to the second base station.
摘要翻译： 在用于执行多播传输的第一基站执行多播传输的时隙中，不执行多播传输的第二基站不执行单播数据传输。 第一基站执行组播发送的时隙从用于向第一基站进行组播传输的调度的组播控制装置通知给第二基站。 从第二基站向连接到第二基站的终端通知接收组播传输的信息。
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公开(公告)号：US08477682B2
公开(公告)日：2013-07-02
申请号：US12850657
申请日：2010-08-05
CPC分类号： H04L1/1854 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/1614 , H04L1/1671 , H04L1/1819 , H04L1/1822 , H04L1/1887 , H04L5/0055
摘要： Conventionally, different HARQ processes 801 and 802 (subframes T1 and T2) transmit data packets B and D, respectively. One data packet corresponds to one process and is retransmitted as necessary one by one on a process basis, degrading the usage efficiency of frequency and time resources. To solve this problem, downlink data packets B and D, when needed to be retransmitted, are spatially multiplexed in the different HARQ processes 801 and 802. The data packets are simultaneously retransmitted to the same terminal as process 805 (subframe T3).
摘要翻译： 传统上，不同的HARQ进程801和802（子帧T1和T2）分别传输数据分组B和D. 一个数据分组对应于一个进程，并且根据需要一个接一个地基于进程重传，降低频率和时间资源的使用效率。 为了解决这个问题，需要重发的下行链路数据分组B和D在不同的HARQ过程801和802中被空间复用。数据分组同时被重传到与进程805相同的终端（子帧T3）。
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36.发明授权Wireless communication system and load balancing aware handover method therefor 有权无线通信系统及其负载平衡感知切换方法公开(公告)号：US08463272B2
公开(公告)日：2013-06-11
申请号：US12985469
申请日：2011-01-06
IPC分类号： H04W36/00
摘要： An object of the invention is to provide a wireless communication system in which the load of each cell and interference between cells are taken into account. In a handover-candidate base station and a handover-source base station, parameters for interference-reducing scheduling and handover facilitating processing are adjusted based on the mutual load information. When the handover-candidate base station, to be used for load balancing, is a large-diameter cell, transmit power control and frequency scheduling are adjusted by taking account of the load state at a cell edge. When the handover-source base station has a small-diameter cell, the number of terminals to be handed over is adjusted by taking account of the load state of the handover-candidate base station. Thus, both of interference control and load balancing are achieved.
摘要翻译： 本发明的目的是提供一种无线通信系统，其中考虑每个小区的负载和小区之间的干扰。 在切换候选基站和切换源基站中，基于相互负载信息来调整用于减少干扰的调度和切换促进处理的参数。 当用于负载均衡的切换候选基站是大直径小区时，通过考虑小区边缘处的负载状态来调整发射功率控制和频率调度。 当切换源基站具有小直径小区时，通过考虑切换候选基站的负载状态来调整要切换的终端的数量。 因此，实现了干扰控制和负载均衡。
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公开(公告)号：US20120129527A1
公开(公告)日：2012-05-24
申请号：US13283128
申请日：2011-10-27
申请人： KEISUKE TAKEUCHI , Rintaro Katayama
发明人： KEISUKE TAKEUCHI , Rintaro Katayama
CPC分类号： H04W52/244 , H04W16/14 , H04W24/10 , H04W36/20 , H04W36/30 , H04W84/045
摘要： When a femto cell base station detects an intense uplink interference, the femto cell base station autonomously extends the femto cell so as to raise a probability that a mobile terminal around the original femto cell may be connected to the femto cell base station. If the mobile terminal connects to the femto cell base station, the uplink interference is reduced and total throughput is improved. Additionally, if a resultant effect of interference reduction is low, the femto cell base station returns the mobile terminal, which is connected to the femto cell base station due to the extension of the femto cell, to the original connection destination. If an evaluative criterion meets a predetermined condition, the femto cell base station restores the extended femto cell to the original size. These actions prevent degradation of performance caused by concentration of the connections of mobile terminals to the femto cell base station.
摘要翻译： 当毫微微小区基站检测到强烈的上行链路干扰时，毫微微小区基站自主地扩展毫微微小区，以提高原始毫微微小区周围的移动终端可以连接到毫微微小区基站的概率。 如果移动终端连接到毫微微小区基站，则降低上行链路干扰，提高总吞吐量。 此外，如果干扰减少的结果效果低，则毫微微小区基站将由于毫微微小区的扩展而连接到毫微微小区基站的移动终端返回到原始连接目的地。 如果评估标准满足预定条件，则毫微微小区基站将扩展毫微微小区恢复到原始大小。 这些动作防止移动终端与毫微微小区基站的连接集中引起的性能下降。
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38.发明授权公开(公告)号：US08160022B2
公开(公告)日：2012-04-17
申请号：US12109442
申请日：2008-04-25
IPC分类号： H04W4/00
摘要： A wireless access terminal, after handoff, adds channel quality information calculated in the wireless access terminal to a header of transmit data and transmits this data until a wireless base station succeeds in receiving at least one or more packets. The wireless base station, when having succeeded in receiving a packet for the first time after the handoff, extracts the channel quality information from a received header to initialize channel quality information inside the wireless base station. Subsequently, the wireless base station autonomously updates the channel quality information in response to success or failure of packet reception and controls the transmission rate.
摘要翻译： 无线接入终端在切换之后，将在无线接入终端中计算出的信道质量信息添加到发送数据的报头，并发送该数据，直到无线基站成功接收至少一个或多个分组。 无线基站在切换后第一次成功接收到分组时，从接收的报头中提取信道质量信息，以初始化无线基站内的信道质量信息。 随后，无线基站响应于分组接收的成功或失败自主更新信道质量信息，并控制传输速率。
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公开(公告)号：US20100238876A1
公开(公告)日：2010-09-23
申请号：US12707758
申请日：2010-02-18
IPC分类号： H04W72/04
CPC分类号： H04W28/16 , H04L1/0001 , H04L1/1812 , H04L1/1887 , H04W16/10 , H04W72/04 , H04W88/08
摘要： A method for radio resource control is carried out in a radio communications system including multiple base stations. In this method, a radio resource that can be used by the base stations is divided into multiple first radio resources on the frequency axis. Then one or more of the first radio resources are allocated to a second radio resource for initially transmitting a packet and the other first radio resources are allocated to a third radio resource for retransmitting the packet.
摘要翻译： 一种用于无线电资源控制的方法在包括多个基站的无线电通信系统中进行。 在该方法中，基站可以使用的无线资源在频率轴上分为多个第一无线资源。 然后将第一无线电资源中的一个或多个分配给第二无线电资源以用于初始发送分组，并且将另外的第一无线电资源分配给第三无线电资源以重新发送分组。
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公开(公告)号：US20090016265A1
公开(公告)日：2009-01-15
申请号：US12051262
申请日：2008-03-19
CPC分类号： H04L1/1887 , H04L1/1819
摘要： A radio communication system of an HARQ method that makes an HARQ transmission interval of subpackets appropriate and reduces data transmission delay resulting from subpacket retransmission. In the radio communication system in which a packet is transmitted and receives with the HARQ method between a base station and multiple radio mobile stations, each of the base station and the multiple radio mobile stations has: a packet transmission circuit for transmitting subpackets in predetermined intervals; a packet reception circuit for repeating decoding processing by combining a newly received subpacket and a previously received former subpacket until an original packet is successfully decoded; and a HARQ control equipped with a function of, for packet communication whose data length is short, transmitting a subpacket or response from the packet transmission circuit in an HARQ transmission interval that is shortened from the HARQ transmission interval of the normal mode.
摘要翻译： 一种HARQ方法的无线电通信系统，其使得子分组的HARQ发送间隔适当并且减少了由分组重传产生的数据传输延迟。 在基站与多个无线移动台之间以HARQ方式发送和接收分组的无线通信系统中，基站和多个无线移动台中的每一个具有：用于以预定间隔发送子分组的分组发送电路 ; 分组接收电路，用于通过组合新接收的子分组和先前接收的以前的子分组来重复解码处理，直到原始分组被成功解码; 以及具有数据长度短的分组通信功能的HARQ控制，在从正常模式的HARQ发送间隔缩短的HARQ发送间隔中，从分组发送电路发送子分组或响应。
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