公开(公告)号：US07995462B2

公开(公告)日：2011-08-09

申请号：US11871858

申请日：2007-10-12

申请人： Xia Gao ,  Fujio Watanabe ,  Gang Wu ,  Ravi Kumar Jain ,  Toshiro Kawahara

发明人： Xia Gao ,  Fujio Watanabe ,  Gang Wu ,  Ravi Kumar Jain ,  Toshiro Kawahara

IPC分类号： G01R31/08

CPC分类号： H04L12/1868 ,  H04L1/0057 ,  H04L1/08 ,  H04L1/1621 ,  H04L1/1685 ,  H04L1/1819 ,  H04L5/1469 ,  H04L12/1863 ,  H04L12/189 ,  H04W8/26 ,  H04W74/04 ,  H04W76/40 ,  H04W84/00 ,  H04W84/04 ,  H04W84/12

摘要： A method supports scalable and reliable multicast in a wireless network with a large bandwidth-delay product. In this method, acknowledgement packets from different receivers experiencing the same number of data packets lost are assigned the same time slots. This method can be combined with other loss recovery techniques, such as forward error correction (FEC) recovery, proactive protection, feedback suppression and collision detection. Scalability is achieved as bandwidth usage relates only to the number of packets transmitted, rather than the number of receivers.

摘要翻译： 一种方法支持具有大带宽延迟产品的无线网络中的可扩展和可靠的组播。 在这种方法中，来自经历相同数量数据包丢失的不同接收机的确认分组被分配相同的时隙。 该方法可以与其他丢失恢复技术相结合，如前向纠错（FEC）恢复，主动保护，反馈抑制和冲突检测。 实现可扩展性，因为带宽使用仅与发送的分组的数量相关，而不是接收机的数量。

公开(公告)号：US20110086641A1

公开(公告)日：2011-04-14

申请号：US12901341

申请日：2010-10-08

申请人： Ismail Guvenc ,  Fujio Watanabe

发明人： Ismail Guvenc ,  Fujio Watanabe

IPC分类号： H04W36/38 ,  H04W28/16

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 of each femtocell information regarding available resources at the femtocell; (b) measuring an 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. When a hand-off to a femtocell is not allowed, a method for determining whether or not a spectral resource of the macrocell is reused includes (a) receiving from a base station of the macrocell a first set of spectrum-sensing data, the first set of spectrum-sensing data comprising spectrum-sensing data of mobile station of the macrocell; (b) receiving from one or more mobile stations associated with the femtocells a second said of spectrum-sensing data; and (c) based on the first set of the spectrum-sensing data and the second set of spectrum-sensing data, determining whether or not to reuse in a femtocell a portion of a spectrum used by the macrocell. The determining step may be carried out at a base station of a femtocell, and the method further requires sensing a spectrum at the base station of the femtocell to obtain a third set of spectrum-sensing data, which is also used in determining whether or not to reuse the portion of the spectrum used by the macrocell.

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）从基站接收每个毫微微小区关于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。 当不允许对毫微微蜂窝进行切换时，用于确定宏小区的频谱资源是否被重用的方法包括：（a）从宏小区的基站接收第一组频谱感测数据，第一组 一组频谱感测数据，包括宏小区的移动台的频谱感测数据; （b）从与所述毫微微小区相关联的一个或多个移动站接收第二所述频谱感测数据; 和（c）基于第一组频谱感测数据和第二组频谱感测数据，确定是否在毫微微小区中重用由宏小区使用的频谱的一部分。 确定步骤可以在毫微微小区的基站执行，并且该方法还需要在毫微微小区的基站处感测频谱以获得第三组频谱感测数据，其也用于确定是否 以重新使用宏小区使用的频谱的部分。

公开(公告)号：US07907582B2

公开(公告)日：2011-03-15

申请号：US11869581

申请日：2007-10-09

申请人： Lei Du ,  Yong Bai ,  Lan Chen ,  Fujio Watanabe ,  Akira Yamada

发明人： Lei Du ,  Yong Bai ,  Lan Chen ,  Fujio Watanabe ,  Akira Yamada

IPC分类号： H04W4/00

CPC分类号： H04W48/20

摘要： A method and an apparatus select an access point (AP) in a wireless LAN to associate or reassociate, based on considerations that take into account the quality-of-service (QoS) status of the stations (STAs) and the potential hidden terminal effect. The method utilizes advertised or requested information obtained from an AP which includes the QoS status in each basic service set (BSS) and estimates the potential hidden terminal (HT) effect based on local channel sensing by the STA. The method selects the AP in a manner that reduces the possibility of collision from equal and higher priority HTs, thus providing greater transmission throughput and improving performance.

摘要翻译： 一种方法和装置，基于考虑到站（STA）的服务质量（QoS）状态和潜在隐藏终端效应的考虑，选择无线LAN中的接入点（AP）来关联或重新关联 。 该方法利用从每个基本业务集（BSS）中包括QoS状态的AP获得的通告或请求信息，并且基于STA的本地信道感测来估计潜在的隐藏终端（HT）效应。 该方法以降低来自相同和较高优先级的HT的冲突的可能性的方式选择AP，从而提供更大的传输吞吐量并提高性能。

公开(公告)号：US07890105B2

公开(公告)日：2011-02-15

申请号：US11243863

申请日：2005-10-04

申请人： Fujio Watanabe ,  Jingjun Cao ,  Toshio Miki

发明人： Fujio Watanabe ,  Jingjun Cao ,  Toshio Miki

IPC分类号： H04W36/00

CPC分类号： H04W36/32 ,  H04W36/14

摘要： One aspect of the present invention regards a method of coordinating the handoff of a mobile carrier between a first access network and a second access network, the method including handing off from a first access network that the mobile carrier is currently operating within to a second access network and building physical access network topology based on the handing off without input from either the first access network or the second access network.

摘要翻译： 本发明的一个方面涉及一种在第一接入网络和第二接入网络之间协调移动载波的切换的方法，所述方法包括将移动运营商当前正在操作的第一接入网络切换到第二接入 基于在没有来自第一接入网或第二接入网的输入的情况下切换的网络和建立物理接入网拓扑。

公开(公告)号：US20100246505A1

公开(公告)日：2010-09-30

申请号：US12620422

申请日：2009-11-17

申请人： Chia-Chin Chong ,  Hlaing Minn ,  Fujio Watanabe

发明人： Chia-Chin Chong ,  Hlaing Minn ,  Fujio Watanabe

IPC分类号： H04W72/04

CPC分类号： H04W72/044 ,  H04W24/00 ,  H04W28/06 ,  H04W72/00

摘要： A non-cyclic evolving-type user resource structure applicable for use in the uplink and the downlink of an OFDMA system with large null guard tones (e.g., a 3GPP LTE system) is provided. In one example, the user resource structure combines the benefits of localized and distributed types of resource structures available in the current baseline 3GPP LTE (Release 8) specifications, and is especially suitable for operating in a fast time-varying channel. In another example, the non-cyclic evolving-type resource structure may be simplified to have no more than three stages: a band-type first stage, a partially evolved-type second stage and an interleaved-type third stage. Depending upon the target or average mobile speed and packet length, the resource structure may even have less than three stages.

摘要翻译： 提供了适用于具有大的空保护音调（例如，3GPP LTE系统）的OFDMA系统的上行链路和下行链路中的非循环演进型用户资源结构。 在一个示例中，用户资源结构组合了当前基准3GPP LTE（版本8）规范中可用的本地化和分布式资源结构的优点，并且特别适用于在快速时变信道中操作。 在另一示例中，可以将非循环演进型资源结构简化为具有不超过三个阶段：频带型第一级，部分演进型第二级和交错型第三级。 根据目标或平均移动速度和分组长度，资源结构甚至可能具有不到三个阶段。

公开(公告)号：US07769397B2

公开(公告)日：2010-08-03

申请号：US12133265

申请日：2008-06-04

申请人： Daichi Funato ,  Fujio Watanabe ,  Toshio Miki

发明人： Daichi Funato ,  Fujio Watanabe ,  Toshio Miki

IPC分类号： H04W68/00

CPC分类号： H04W68/00 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0216 ,  H04W52/0219 ,  H04W64/00 ,  H04W76/20 ,  H04W80/04 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/142 ,  Y02D70/22

摘要： Apparatuses and methods are disclosed herein for implementing dormant mode with paging in a WLAN. Power savings in the computing device and reduction in traffic across the network are achieved by requiring a computing device to inform the WLAN of its location only when it crosses a paging area boundary or is to receive IP traffic. Dormant mode with paging is implemented in a protocol that supports dormant functionality and paging functionality but does not itself provide methods or standards for implementing such functionality, such as the IEEE 802.11. The methods and apparatuses disclosed herein provide the methods needed to implement dormant mode with paging in such a protocol. Generally, the methods and apparatuses for implementing dormant mode with paging basically include (1) establishing paging areas; (2) communicating access group information to a computing device; and (3) locating a computing device.

摘要翻译： 本文公开了用于在WLAN中实现具有寻呼的休眠模式的装置和方法。 通过要求计算设备仅在其跨越寻呼区域边界或者要接收IP流量时才通知WLAN其位置来实现计算设备中的功率节省和网络上的流量减少。 具有寻呼的休眠模式在支持休眠功能和寻呼功能的协议中实现，但本身不提供用于实现这种功能的方法或标准，例如IEEE 802.11。 这里公开的方法和装置提供了在这种协议中实现具有寻呼的休眠模式所需的方法。 通常，用于实现寻呼的休眠模式的方法和装置基本上包括（1）建立寻呼区域; （2）将访问组信息传送到计算设备; 和（3）定位计算设备。

公开(公告)号：US07610053B2

公开(公告)日：2009-10-27

申请号：US11336236

申请日：2006-01-19

申请人： Daichi Funato ,  Fujio Watanabe ,  Toshio Miki

发明人： Daichi Funato ,  Fujio Watanabe ,  Toshio Miki

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04W48/16 ,  H04W48/20 ,  H04W52/02 ,  H04W64/00 ,  H04W68/00 ,  H04W76/04 ,  H04W80/04 ,  H04W84/12 ,  H04W88/08

CPC分类号： H04W68/00 ,  H04W48/16 ,  H04W48/20 ,  H04W52/0216 ,  H04W52/0219 ,  H04W64/00 ,  H04W76/20 ,  H04W80/04 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/142 ,  Y02D70/22

摘要： Apparatuses and methods are disclosed herein for implementing dormant mode with paging in a WLAN. Power savings in the computing device and reduction in traffic across the network are achieved by requiring a computing device to inform the WLAN of its location only when it crosses a paging area boundary or is to receive IP traffic. Dormant mode with paging is implemented in a protocol that supports dormant functionality and paging functionality but does not itself provide methods or standards for implementing such functionality, such as the IEEE 802.11. The methods and apparatuses disclosed herein provide the methods needed to implement dormant mode with paging in such a protocol. Generally, the methods and apparatuses for implementing dormant mode with paging basically include (1) establishing paging areas; (2) communicating access group information to a computing device; and (3) locating a computing device.

摘要翻译： 本文公开了用于在WLAN中实现具有寻呼的休眠模式的装置和方法。 通过要求计算设备仅在其跨越寻呼区域边界或者要接收IP流量时才通知WLAN其位置来实现计算设备中的功率节省和网络上的流量减少。 具有寻呼的休眠模式在支持休眠功能和寻呼功能的协议中实现，但本身不提供用于实现这种功能的方法或标准，例如IEEE 802.11。 这里公开的方法和装置提供了在这种协议中实现具有寻呼的休眠模式所需的方法。 通常，用于实现寻呼的休眠模式的方法和装置基本上包括（1）建立寻呼区域; （2）将访问组信息传送到计算设备; 和（3）定位计算设备。

公开(公告)号：US20080186842A1

公开(公告)日：2008-08-07

申请号：US12019547

申请日：2008-01-24

申请人： Chia-Chin Chong ,  Pedro C. Pinto ,  Moe Z. Win ,  Fujio Watanabe ,  Hiroshi Inamura

发明人： Chia-Chin Chong ,  Pedro C. Pinto ,  Moe Z. Win ,  Fujio Watanabe ,  Hiroshi Inamura

IPC分类号： H04J9/00

CPC分类号： H04W16/14

摘要： A wireless communication system and a detect-and-multiplex (DAM) spectrum sharing technique eliminate contention by secondary spectrum users by multiplexing multiple access methods. Suitable multiple access methods include time division multiple access (TDMA), frequency division multiple access (FDMA), code division multiple access (CDMA), space division multiple access (SDMA), orthogonal frequency division multiple access (OFDMA), spectral nulling (SN) or a hybrid scheme (HS) based on a combination of two or more of the above techniques. Unlike, detect-and-avoid (DAA) multiple access methods, the DAM method increases spectrum usage efficiency, and allows more users to share the same region of the spectrum.

摘要翻译： 无线通信系统和检测与复用（DAM）频谱共享技术通过复用多种接入方式消除了二级频谱用户的争用。 合适的多址方法包括时分多址（TDMA），频分多址（FDMA），码分多址（CDMA），空分多址（SDMA），正交频分多址（OFDMA），频谱归零 ）或基于两种或更多种上述技术的组合的混合方案（HS）。 与DAA方法不同的是，DAM方法提高了频谱使用效率，并且允许更多用户共享频谱的相同区域。

公开(公告)号：US20080170497A1

公开(公告)日：2008-07-17

申请号：US11868281

申请日：2007-10-05

申请人： Moo Ryong Jeong ,  Fujio Watanabe ,  Hiroshi Inamura

发明人： Moo Ryong Jeong ,  Fujio Watanabe ,  Hiroshi Inamura

IPC分类号： H04L12/26

CPC分类号： H04W28/08 ,  H04W84/12

摘要： An apparatus and a method proactively manage the load of an 802.11 WLAN based on one or more per-class station counts, in which the stations are classified according to access categories (ACs), user priorities (UPs), or services. Alternatively, the load of an 802.11 WLAN may also be proactively managed based on provisional or non-provisional per-class traffic specification (TSPECs), depending upon the status of traffic streams (TSs). Load balancing may be achieved by (a) collecting per-class station count information, either through an AP, or through exchanges with neighboring APs or wireless stations, and (b) proactively influencing association decisions between wireless stations and APs. A wireless station may be classified according to ACs, UPs, or services. Alternatively, load balancing may be achieved by (a) collecting provisional or non-provision per-class traffic specification (TSPEC) through an AP, or through exchanges with neighboring APs or wireless stations, and (b) proactively influencing association decisions between wireless stations and APs.

摘要翻译： 一种装置和方法，主要根据一个或多个每类站点计数来管理802.11 WLAN的负载，其中根据接入类别（AC），用户优先级（UP）或服务来分类站。 或者，取决于业务流（TS）的状态，802.11 WLAN的负载也可以基于临时或非临时每类流量规范（TSPEC）来主动管理。 负载均衡可以通过以下方式实现：（a）通过AP或通过与相邻AP或无线站的交换来收集每类站点计数信息，以及（b）主动地影响无线站和AP之间的关联决定。 无线站可以根据AC，UP或服务进行分类。 或者，可以通过（a）通过AP收集临时或非提供的每类流量规范（TSPEC）或通过与相邻AP或无线站的交换来实现负载平衡，以及（b）主动影响无线站之间的关联决定 和AP。

公开(公告)号：US07397805B2

公开(公告)日：2008-07-08

申请号：US10405186

申请日：2003-04-02

申请人： Xia Gao ,  Moo Ryong Jeong ,  Fujio Watanabe ,  Gang Wu

发明人： Xia Gao ,  Moo Ryong Jeong ,  Fujio Watanabe ,  Gang Wu

IPC分类号： H04J3/16

CPC分类号： H04W28/22 ,  H04L1/1812 ,  H04L41/0896 ,  H04L41/5025

摘要： Disclosed herein are systems and methods for communicating a number of data flows on a single communications channel. In one embodiment, a method of communicating a number of data flows on a shared communications channel includes the acts of (1) calculating a set of optimum goodput rates for the data flows, in order to maximize a total utility of the data flows, (2) calculating a set of optimum throughput rates for the data flows based on the optimum goodput rates, and (3) transmitting the data flows on the shared communications channel with the optimized throughput rates. Optimization is preferably done using utility functions that indicate the utility of the data flows as a function of their goodput rates. The method can additionally block temporarily a transport layer of at least one of the data flows if the transport layer of that data flow is bottlenecked.

摘要翻译： 这里公开了用于在单个通信信道上传送多个数据流的系统和方法。 在一个实施例中，在共享通信信道上传送多个数据流的方法包括以下动作：（1）计算数据流的最佳输入速率的集合，以便最大化数据流的总效用（ 2）基于最佳输出速率计算数据流的最佳吞吐率集合，以及（3）以优化的吞吐率在共享通信信道上发送数据流。 优化是使用效用函数完成的，这些效用函数指示数据流作为其输出速率的函数。 如果该数据流的传输层是瓶颈的，则该方法可以另外阻止至少一个数据流的传输层。