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。

公开(公告)号：US07602757B2

公开(公告)日：2009-10-13

申请号：US11220837

申请日：2005-09-06

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

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

IPC分类号： H04W4/00

CPC分类号： H04W48/16 ,  Y02D70/122 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

摘要： Channel scanning for wireless networks, such as Wireless Local Area Networks (WLANs), generally provides a wireless station with the information on the available WLAN resources, such as the frequency band and the maximum transmission power. The present invention provides safe and fast domain-aware channel scanning, enabling a wireless station to comply with applicable local regulations, in spite of the possibility of domain changes, with short channel-scanning time. Fast channel scanning is accomplished by active channel scanning if valid domain information is available and there is no possibility of domain change. Also, domain-independent channels, if any, are first scanned using active scan to get domain information faster.

摘要翻译： 诸如无线局域网（WLAN）等无线网络的信道扫描通常为无线站提供关于可用WLAN资源的信息，例如频带和最大传输功率。 本发明提供了安全和快速的域感知信道扫描，使得无线站能够遵循适用的本地规则，尽管具有域变化的可能性，具有短的信道扫描时间。 如果有效的域信息可用并且不存在域变更的可能性，则通过主动信道扫描来完成快速信道扫描。 此外，首先使用主动扫描扫描与域无关的通道（如果有的话），以更快地获取域信息。

公开(公告)号：US07656831B2

公开(公告)日：2010-02-02

申请号：US11454259

申请日：2006-06-16

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

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

IPC分类号： G80C17/00 ,  H01Q11/12 ,  H04M1/00

CPC分类号： H04W52/0216 ,  H04W52/0229 ,  H04W84/18 ,  Y02D70/142 ,  Y02D70/22

摘要： Methods for increasing power saving in a station that sends or receives frames in an ad hoc wireless network (e.g., IBSS), while allowing the station to enter a power-saving mode quickly upon completion of scheduled tasks. At the same time, a method of the present invention allows two stations in the ad hoc wireless network to infer each other's power management mode without requiring an ATIM/ACK exchange between the STAs within an ATIM window. Consequently, a station may enter a power-saving mode promptly without impairing the station's ability to receive packets. In one embodiment, a “more data” field is used between stations to exchange information. Stations with various computation abilities provide information under different time constraints. The stations may enter power-saving modes that send multicast/broadcast frames or use promiscuous mode within an ATIM window.

摘要翻译： 在用于在自组织无线网络（例如，IBSS）中发送或接收帧的站中增加功率节省的方法，同时允许所述站在完成预定任务时快速进入功率节省模式。 同时，本发明的方法允许自组织无线网络中的两个站推断出彼此的电力管理模式，而不需要ATIM窗口内的STA之间的ATIM / ACK交换。 因此，站可以及时进入省电模式，而不会损害电台接收分组的能力。 在一个实施例中，在站之间使用“更多数据”字段来交换信息。 具有各种计算能力的站点在不同的时间限制下提供信息。 这些站可以进入在ATIM窗口内发送组播/广播帧或使用混杂模式的省电模式。

公开(公告)号：US20130051365A1

公开(公告)日：2013-02-28

申请号：US13595815

申请日：2012-08-27

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

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

IPC分类号： H04W36/00

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.

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划分成内部区域，功率控制区域和外部区域。

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：US08345629B2

公开(公告)日：2013-01-01

申请号：US12211611

申请日：2008-09-16

申请人： Ismail Guvenc ,  Moo Ryong Jeong ,  Fujio Watanabe

发明人： Ismail Guvenc ,  Moo Ryong Jeong ,  Fujio Watanabe

IPC分类号： H04W4/00 ,  H04L12/26 ,  H04L1/00 ,  H04J1/16 ,  H04J3/14 ,  H04H20/71

CPC分类号： H04L1/02 ,  H04B7/155 ,  H04L1/1803 ,  H04L1/1848 ,  H04L2001/0093 ,  H04L2001/0097 ,  H04W56/00

摘要： A method and apparatus is disclosed herein for transmitting data in a network (e.g., a relay network). In one embodiment, the method comprises performing pre-transmission of a packet to hops to enable the base station and the plurality of hops 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 first set of one or more hops in the system during a delay due to pre-transmissions at a second set of one or more hops in the system.

摘要翻译： 本文公开的用于在网络（例如，中继网络）中传输数据的方法和装置。 在一个实施例中，所述方法包括执行分组的预传输以使所述基站和所述多个跳跃能够同步地传送所述分组到所述无线通信系统中的一个或多个移动台; 以及由于在系统中的一个或多个跳的第二组处的预发送而在延迟期间在系统中的一个或多个跳的第一组处执行所述分组的一个或多个重新发送。

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。

公开(公告)号：US08131291B2

公开(公告)日：2012-03-06

申请号：US10545466

申请日：2004-04-02

申请人： Moo Ryong Jeong ,  Fujio Watanabe ,  Toshiro Kawahara

发明人： Moo Ryong Jeong ,  Fujio Watanabe ,  Toshiro Kawahara

IPC分类号： H04Q7/20

CPC分类号： H04W48/14 ,  H04B7/022 ,  H04W48/16 ,  H04W48/20 ,  H04W74/08 ,  H04W84/12

摘要： In a fast active scanning wireless network apparatus and method for quick determination of available access points (20), information about a candidate set of available access points (20) is obtained, and a candidate access point is identified from the candidate set. A mobile station (10) then queries the candidate access point with a probe request that designates the candidate access point as a sole responder. The probe request prevents other access points from contending for the medium of communication between the mobile station and the designated sole responder access point by excluding the attempt by other access points (20) to transmit probe responses. The apparatus and method thus increases the probability of a fast and successful probe request from the mobile station and subsequent response from the designated access point (20). The designated access point may also respond with a probe response of high priority, preventing intervention of communication.

摘要翻译： 在用于快速确定可用接入点（20）的快速主动扫描无线网络装置和方法中，获得关于可用接入点（20）的候选集合的信息，并且从候选集合识别候选接入点。 然后，移动站（10）用指定候选接入点的探测请求作为唯一响应者来查询候选接入点。 探测请求通过排除其他接入点（20）发送探测响应的尝试来防止其他接入点竞争移动台和指定的唯一响应者接入点之间的通信介质。 因此，装置和方法增加了来自移动台的快速和成功的探测请求的概率以及从指定接入点（20）的后续响应。 指定的接入点也可以以高优先级的探测响应进行响应，防止通信干扰。

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。

公开(公告)号：US20090291690A1

公开(公告)日：2009-11-26

申请号：US12463307

申请日：2009-05-08

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

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

IPC分类号： H04W72/00 ,  H04W36/00 ,  H04B7/00 ,  H04B15/00

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。