公开(公告)号：US07768973B2

公开(公告)日：2010-08-03

申请号：US11785892

申请日：2007-04-20

申请人： Chenxi Zhu ,  Tolga Girici ,  Jonathan Russell Agre

发明人： Chenxi Zhu ,  Tolga Girici ,  Jonathan Russell Agre

IPC分类号： H04W4/00

CPC分类号： H04W72/1242 ,  H04L5/023

摘要： Available bandwidth and power for users demanding real time and non-real time data traffic are scheduled, while maximizing proportional fairness for the users over a plurality of time slots, and meeting quality of service constraints for real time data traffic users. The Lagrangian multipliers are used to define a function which includes the proportional fair capacity over the plurality of time slots, and the total power, the total bandwidth, and rate of the real time users' constraints. A maximum of the function is determined for each time slot by binary searching two parameters while observing the total power and total bandwidth. An optimal allocation of the bandwidth and power for the time slot is calculated using the two parameters.

摘要翻译： 调度要求实时和非实时数据流量的用户的可用带宽和功率，同时在多个时隙中最大化用户的比例公平性，并满足实时数据流量用户的服务质量约束。 拉格朗日乘数用于定义包括多个时隙中的比例公平容量以及实时用户约束的总功率，总带宽和速率的函数。 通过二进制查找两个参数同时观察总功率和总带宽，确定每个时隙的最大功能。 使用两个参数计算时隙的带宽和功率的最佳分配。

公开(公告)号：US20070248048A1

公开(公告)日：2007-10-25

申请号：US11785892

申请日：2007-04-20

申请人： Chenxi Zhu ,  Tolga Girici ,  Jonathan Russell Agre

发明人： Chenxi Zhu ,  Tolga Girici ,  Jonathan Russell Agre

IPC分类号： H04Q7/00

CPC分类号： H04W72/1242 ,  H04L5/023

摘要： Available bandwidth and power for users demanding real time and non-real time data traffic are scheduled, while maximizing proportional fairness for the users over a plurality of time slots, and meeting quality of service constraints for real time data traffic users. The Lagrangian multipliers are used to define a function which includes the proportional fair capacity over the plurality of time slots, and the total power, the total bandwidth, and rate of the real time users' constraints. A maximum of the function is determined for each time slot by binary searching two parameters while observing the total power and total bandwidth. An optimal allocation of the bandwidth and power for the time slot is calculated using the two parameters.

摘要翻译： 调度要求实时和非实时数据流量的用户的可用带宽和功率，同时在多个时隙中最大化用户的比例公平性，并满足实时数据流量用户的服务质量约束。 拉格朗日乘数用于定义包括多个时隙中的比例公平容量以及实时用户约束的总功率，总带宽和速率的函数。 通过二进制查找两个参数同时观察总功率和总带宽，确定每个时隙的最大功能。 使用两个参数计算时隙的带宽和功率的最佳分配。

公开(公告)号：US07924698B2

公开(公告)日：2011-04-12

申请号：US11785893

申请日：2007-04-20

申请人： Chenxi Zhu ,  Jonathan Russell Agre

发明人： Chenxi Zhu ,  Jonathan Russell Agre

IPC分类号： H04B7/212

CPC分类号： H04L5/023 ,  H04L27/2608 ,  H04W52/22 ,  H04W52/226 ,  H04W52/228 ,  H04W52/346

摘要： A scheduler and a method schedule available power and bandwidth to users. Equations for a continuous bandwidth allocation of a total bandwidth, and/or a continuous power distribution of a total power, are set up using Lagrangian multipliers to include constraints in a function that is maximum when a fair capacity is maximum. The continuous bandwidth allocation and/or the continuous power distribution represent sets of values corresponding to users that maximize the function. The equations are solved using waterfilling methods, wherein the continuous power distribution is determined for a previously determined bandwidth allocation, and/or the continuous bandwidth allocation is calculated for a previously determined power distribution.

摘要翻译： 调度器和方法为用户提供可用的功率和带宽。 使用拉格朗日乘数来建立总带宽的连续带宽分配和/或总功率的连续功率分配的等式，以在公平容量最大时在最大值的函数中包括约束。 连续带宽分配和/或连续功率分配表示与使功能最大化的用户对应的值集合。 使用填埋方法求解方程式，其中为先前确定的带宽分配确定连续功率分布，和/或为先前确定的功率分布计算连续带宽分配。

公开(公告)号：US20070248178A1

公开(公告)日：2007-10-25

申请号：US11785893

申请日：2007-04-20

申请人： Chenxi Zhu ,  Jonathan Russell Agre

发明人： Chenxi Zhu ,  Jonathan Russell Agre

IPC分类号： H04L27/28 ,  H04K1/10

CPC分类号： H04L5/023 ,  H04L27/2608 ,  H04W52/22 ,  H04W52/226 ,  H04W52/228 ,  H04W52/346

摘要： A scheduler and a method schedule available power and bandwidth to users. Equations for a continuous bandwidth allocation of a total bandwidth, and/or a continuous power distribution of a total power, are set up using Lagrangian multipliers to include constraints in a function that is maximum when a fair capacity is maximum. The continuous bandwidth allocation and/or the continuous power distribution represent sets of values corresponding to users that maximize the function. The equations are solved using waterfilling methods, wherein the continuous power distribution is determined for a previously determined bandwidth allocation, and/or the continuous bandwidth allocation is calculated for a previously determined power distribution.

摘要翻译： 调度器和方法为用户提供可用的功率和带宽。 使用拉格朗日乘数来建立总带宽的连续带宽分配和/或总功率的连续功率分配的等式，以在公平容量最大时在最大值的函数中包括约束。 连续带宽分配和/或连续功率分配表示与使功能最大化的用户对应的值集合。 使用填埋方法求解方程式，其中为先前确定的带宽分配确定连续功率分布，和/或为先前确定的功率分布计算连续带宽分配。

公开(公告)号：US09049727B2

公开(公告)日：2015-06-02

申请号：US13051250

申请日：2011-03-18

申请人： Chenxi Zhu

发明人： Chenxi Zhu

IPC分类号： H04B1/00 ,  H04W72/08 ,  H04W84/04 ,  H04W84/10

CPC分类号： H04W72/082 ,  H04W84/045 ,  H04W84/105

摘要： In one embodiment, a wireless base station, receives a random access preamble from a wireless device that is not authorized to utilize the wireless base station, the random access preamble indicating that the wireless device suffers interference from the wireless base station. The wireless base station sends a random access response to the wireless device; receives an interference stress message from the wireless device; and reduces interference for the wireless device.

摘要翻译： 在一个实施例中，无线基站从未被授权使用无线基站的无线设备接收随机接入前导码，该随机接入前导码指示无线设备受到来自无线基站的干扰。 无线基站向无线设备发送随机接入响应; 从无线设备接收干扰紧张消息; 并减少无线设备的干扰。

公开(公告)号：US08688117B2

公开(公告)日：2014-04-01

申请号：US12395823

申请日：2009-03-02

申请人： Wei-Peng Chen ,  Chenxi Zhu ,  Yuji Kojima

发明人： Wei-Peng Chen ,  Chenxi Zhu ,  Yuji Kojima

IPC分类号： H04W36/00 ,  H04W4/00

CPC分类号： H04W36/04 ,  H04W24/10 ,  H04W84/045 ,  H04W84/047

摘要： The teachings of the present disclosure relate to seamless handover between macro base stations and publicly accessible femto base stations that includes scheduling a null period in a femto base station's communications activity. The method also includes monitoring mobile station activity during the null period at the femto base station. A candidate mobile station is identified based on the monitoring. An identifier of the candidate mobile station is transmitted from the femto base station to a macro base station. The identifier may be used to initiate handover of service of the candidate mobile station from the macro base station to the femto base station.

摘要翻译： 本公开的教导涉及宏基站和可公开访问的毫微微基站之间的无缝切换，其包括在毫微微基站的通信活动中调度空周期。 该方法还包括在毫微微基站的空周期期间监视移动站活动。 基于监视来识别候选移动台。 候选移动站的标识符从毫微微基站发送到宏基站。 标识符可以用于发起候选移动台从宏基站到毫微微基站的服务切换。

公开(公告)号：US08620341B2

公开(公告)日：2013-12-31

申请号：US13149400

申请日：2011-05-31

申请人： Chenxi Zhu ,  Wei-Peng Chen

发明人： Chenxi Zhu ,  Wei-Peng Chen

IPC分类号： H04W72/00 ,  H04L1/00 ,  H04W4/00

CPC分类号： H04W24/02 ,  H04W28/16 ,  H04W28/18 ,  H04W84/045 ,  H04W92/20

摘要： In accordance with particular embodiments, a method includes providing one or more network tuning constants associated with one or more base stations of a wireless network. The network tuning constants are configured to adjust an equilibrium point of a first bandwidth allocation among the one or more base stations. The method also includes receiving one or more signal performance values from each of the one or more base stations in the wireless network. The method further includes determining whether at least one of the one or more network tuning constants needs to be adjusted. The method additionally includes, upon determining that at least one of the one or more network tuning constants needs to be adjusted, adjusting the one or more network tuning constants based at least in part on the one or more signal performance values.

摘要翻译： 根据特定实施例，一种方法包括提供与无线网络的一个或多个基站相关联的一个或多个网络调谐常数。 网络调谐常数被配置为调整一个或多个基站中的第一带宽分配的平衡点。 该方法还包括从无线网络中的一个或多个基站中的每一个接收一个或多个信号性能值。 该方法还包括确定是否需要调整一个或多个网络调谐常数中的至少一个。 该方法还包括在确定需要调整一个或多个网络调谐常数中的至少一个时，至少部分地基于一个或多个信号性能值调整一个或多个网络调谐常数。

公开(公告)号：US08467823B2

公开(公告)日：2013-06-18

申请号：US12731052

申请日：2010-03-24

申请人： Hiroyuki Seki ,  Hiroyuki Kiyanagi ,  Wei-Peng Chen ,  Chenxi Zhu ,  Nien-Tai Kai Mao

发明人： Hiroyuki Seki ,  Hiroyuki Kiyanagi ,  Wei-Peng Chen ,  Chenxi Zhu ,  Nien-Tai Kai Mao

IPC分类号： H04W4/00 ,  H04W72/00 ,  H04W36/00 ,  H04B7/00

CPC分类号： H04W36/18 ,  H04W88/085

摘要： A method of communicating between a base band unit and a plurality of remote radio heads includes the steps of receiving a first signal through an antenna in a first remote radio head, transmitting the first signal to a second remote radio head through a digital radio interface, receiving a second signal through an antenna in the second remote radio head, compensating for a delay accrued in the first signal, adding the first signal and the second signal to obtain a resulting signal, and transmitting the resulting signal to a base band unit through a digital radio interface.

摘要翻译： 在基带单元与多个远程无线电头之间通信的方法包括以下步骤：通过第一远程无线电头中的天线接收第一信号，通过数字无线电接口将第一信号发送到第二远程无线电头， 通过所述第二远程无线电头中的天线接收第二信号，补偿在所述第一信号中累积的延迟，将所述第一信号和所述第二信号相加以获得结果信号，并将所得到的信号通过 数字无线电接口。

公开(公告)号：US08446852B2

公开(公告)日：2013-05-21

申请号：US12199707

申请日：2008-08-27

申请人： Chenxi Zhu ,  Hui Zeng ,  Wei-Peng Chen

发明人： Chenxi Zhu ,  Hui Zeng ,  Wei-Peng Chen

IPC分类号： H04B7/14

CPC分类号： H04W72/082 ,  H04B7/2606 ,  H04W84/047

摘要： A method for selecting an access link in a multi-hop relay network includes determining a first effective spectrum efficiency value of a first connection between an endpoint and a base station. The first effective spectrum efficiency value is indicative of the spectrum efficiency from the endpoint to the base station when the first connection is used. The method also includes determining a second effective spectrum efficiency value of a second connection between the endpoint and the base station via a relay station. The second effective spectrum efficiency value is indicative of the spectrum efficiency from the endpoint to the base station when the second connection is used. The method also includes comparing the first and second effective spectrum efficiency values. The method further includes establishing a connection using one of the first or second connections based on the comparison of the first and second effective spectrum efficiency values.

摘要翻译： 一种用于在多跳中继网络中选择接入链路的方法包括确定端点与基站之间的第一连接的第一有效频谱效率值。 当使用第一连接时，第一有效频谱效率值表示从端点到基站的频谱效率。 该方法还包括经由中继站确定端点与基站之间的第二连接的第二有效频谱效率值。 第二有效频谱效率值表示当使用第二连接时从端点到基站的频谱效率。 该方法还包括比较第一和第二有效频谱效率值。 该方法还包括基于第一和第二有效频谱效率值的比较来建立使用第一或第二连接中的一个的连接。

公开(公告)号：US20130023277A1

公开(公告)日：2013-01-24

申请号：US13511476

申请日：2011-01-12

申请人： Chenxi Zhu ,  Wei-Peng Chen

发明人： Chenxi Zhu ,  Wei-Peng Chen

IPC分类号： H04W28/20 ,  H04W72/08

CPC分类号： H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/16 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/08 ,  H04W84/045

摘要： A method for allocating bandwidth in a wireless network includes communicating wirelessly with at least one endpoint using a first frequency bandwidth. The method may also include receiving a measurement of a signal quality from the at least one endpoint and communicating an indication of the signal quality to a server. The method may further include receiving from the server a second frequency bandwidth based on the signal quality and a cost per unit of frequency bandwidth. The second frequency bandwidth may indicate an amount of frequency bandwidth to use in communicating wirelessly with the at least one endpoint. The method may additionally include communicating wirelessly with the at least one endpoint using the second frequency bandwidth.

摘要翻译： 用于在无线网络中分配带宽的方法包括使用第一频率带宽与至少一个端点进行无线通信。 该方法还可以包括从至少一个端点接收信号质量的测量，并将信号质量的指示传送到服务器。 该方法还可以包括从服务器接收基于信号质量的第二频率带宽和每单位频率带宽的成本。 第二频率带宽可以指示用于与至少一个端点进行无线通信的频率带宽的量。 该方法可以另外包括使用第二频率带宽与至少一个端点进行无线通信。