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公开(公告)号：US08411624B2
公开(公告)日：2013-04-02
申请号：US12459435
申请日：2009-07-01
CPC分类号： H04W72/085 , H04W16/10 , H04W52/244
摘要： A method of dynamic resource allocations in wireless network is disclosed. The method provides that a base station in the network allocates resources to users independently of other base stations and without resource planning. Resource allocations are done based at least in part on a local optimization objective and a channel quality indicator from one or more users, and result in efficient resource reuse.
摘要翻译： 公开了一种无线网络中动态资源分配的方法。 该方法规定，网络中的基站将独立于其他基站的资源分配给用户，而无需资源规划。 至少部分地基于来自一个或多个用户的本地优化目标和信道质量指示符来完成资源分配，并且导致有效的资源重用。
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公开(公告)号：US08243601B2
公开(公告)日：2012-08-14
申请号：US12124332
申请日：2008-05-21
申请人： Li Li , Harish Viswanathan , Ramachandran Ramjee
发明人： Li Li , Harish Viswanathan , Ramachandran Ramjee
CPC分类号： H04W40/02 , H04L1/0002 , H04L1/0057 , H04L45/125 , H04W40/34 , H04W72/1263 , Y02D70/142 , Y02D70/22 , Y02D70/30
摘要： A routing protocol, according to one embodiment of which a first station of a wireless network monitors its outgoing transmissions corresponding to a traffic flow for occurrence of multi-tier signals and for ability to achieve a specified minimum transmission rate. Based on the monitoring, the first station may transmit an outgoing solicitation message that identifies the monitored traffic flow as a candidate for rerouting. Upon receipt of the solicitation message, a second station of the wireless network evaluates whether rerouting of the monitored traffic flow through the second station is capable of increasing data throughput for that traffic flow without decreasing data throughputs for other traffic flows presently handled by the second station. Based on this evaluation, the second station may transmit to the first station an offer to reroute the monitored traffic flow. The first station, in turn, evaluates this offer, e.g., by comparing its benefits with those of alternative offers that the first station might have received from other stations of the wireless network in response to the solicitation message. Based on the latter evaluation, the first station may reroute the monitored traffic flow through the station whose offer is deemed preferable.
摘要翻译： 根据一个实施例的路由协议，无线网络的第一站监视其对应于业务流的出局传输以发生多层信号，并且能够实现指定的最小传输速率。 基于监视，第一站可以将识别被监视的业务流的传出请求消息作为重新路由的候选者发送。 在接收到请求消息时，无线网络的第二站评估通过第二站的所监视的业务流的重新路由是否能够增加该业务流的数据吞吐量，而不减少目前由第二站处理的其他业务流的数据吞吐量 。 基于该评估，第二站可以向第一站发送重新路由所监视的业务流的报价。 反过来，第一站又可以通过将其优点与第一站可能响应于请求消息从无线网络的其他站接收的替代提供的优点进行比较来评估该提供。 基于后一种评估，第一站可以将监视的业务流重新路由通过被认为优选的站。
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公开(公告)号：US20100034157A1
公开(公告)日：2010-02-11
申请号：US12459435
申请日：2009-07-01
IPC分类号： H04W72/04
CPC分类号： H04W72/085 , H04W16/10 , H04W52/244
摘要： A method of dynamic resource allocations in wireless network is disclosed. The method provides that a base station in the network allocates resources to users independently of other base stations and without resource planning. Resource allocations are done based at least in part on a local optimization objective and a channel quality indicator from one or more users, and result in efficient resource reuse.
摘要翻译： 公开了一种无线网络中动态资源分配的方法。 该方法规定，网络中的基站将独立于其他基站的资源分配给用户，而无需资源规划。 至少部分地基于来自一个或多个用户的本地优化目标和信道质量指示符来完成资源分配，并且导致有效的资源重用。
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公开(公告)号：US20060217119A1
公开(公告)日：2006-09-28
申请号：US11089353
申请日：2005-03-25
申请人： Peter Bosch , Francis Mullany , Harish Viswanathan
发明人： Peter Bosch , Francis Mullany , Harish Viswanathan
IPC分类号： H04Q7/20
摘要： An active set of base stations may be controlled based on whether data is unavailable at base stations within the active set. The base station may transmit an indicator indicating whether data is unavailable at the base station and/or a mobile station may monitor a channel characteristic of at least a portion of a channel between the base station and the mobile station.
摘要翻译： 可以基于活动集中的基站上的数据是否不可用来控制活动的基站集合。 基站可以发送指示数据在基站不可用的指示符和/或移动站可以监视基站和移动台之间的信道的至少一部分的信道特性。
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公开(公告)号：US20060067273A1
公开(公告)日：2006-03-30
申请号：US10955242
申请日：2004-09-30
申请人： Das Suman , Sarit Mukherjee , Sureshbabu Nair , Priya Rajan , Ajay Rajkumar , Sampath Rangarajan , Michael Turner , Harish Viswanathan
发明人： Das Suman , Sarit Mukherjee , Sureshbabu Nair , Priya Rajan , Ajay Rajkumar , Sampath Rangarajan , Michael Turner , Harish Viswanathan
IPC分类号： H04Q7/00
摘要： An active session mobility solution for radio link protocol (RLP) in accordance with the present invention defines two RLP migrations states. A first state is defined as a forward-link RLP state and depicts the communication of data from a home agent to an access terminal in an IP network. A second state is defined as a reverse-link RLP state and depicts the communication of data from the access terminal to the home agent in the IP network. In one embodiment of the seamless active session mobility solution for RLP in accordance with the present invention, a two-stage RLP transfer process for the migration of the two defined states from a source to a target is implemented. In a first stage, the forward-link RLP state is transferred from a source to a target. In a second stage, frame selection and the reverse-link RLP are transferred from the source to the target.
摘要翻译： 根据本发明的用于无线链路协议（RLP）的活动会话移动性解决方案定义了两个RLP迁移状态。 第一状态被定义为前向链路RLP状态，并且描绘了从归属代理到IP网络中的接入终端的数据的通信。 第二状态被定义为反向链路RLP状态，并且描绘从IP网络中的从接入终端到归属代理的数据的通信。 在根据本发明的用于RLP的无缝活动会话移动性解决方案的一个实施例中，实现了将两个定义的状态从源迁移到目标的两级RLP传送过程。 在第一阶段，前向链路RLP状态从源传输到目标。 在第二阶段，帧选择和反向链路RLP从源传输到目标。
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66.发明申请Method for controlling transmissions using both diversity and nondiversity transmission schemes 审中-公开使用分集和非分集传输方案来控制传输的方法公开(公告)号：US20060009168A1
公开(公告)日：2006-01-12
申请号：US10889456
申请日：2004-07-12
申请人： Farooq Khan , Harish Viswanathan
发明人： Farooq Khan , Harish Viswanathan
CPC分类号： H04B7/0613 , H04L1/0009 , H04L1/0625 , H04L1/1812 , H04W52/42
摘要： A wireless communications system is provided in which transmissions may be made in either a diversity mode or a non-diversity mode on a slot by slot basis. When transmitting in the diversity mode, separate pilot signals are delivered over a first and second antenna. When transmitting in the non-diversity mode, substantially identical pilot signals are delivered over the first and second antennas with available pilot power substantially equally distributed therebetween.
摘要翻译： 提供了一种无线通信系统，其中可以在分集模式或非分集模式下逐个进行传输。 当在分集模式下发送时，分离的导频信号通过第一和第二天线传送。 当以非分集模式发送时，基本上相同的导频信号通过第一和第二天线以可用的导频功率在其间基本均匀分布。
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67.发明授权Determining channel characteristics in a wireless communication system that uses multi-element antenna 有权确定使用多单元天线的无线通信系统中的信道特性公开(公告)号：US06925131B2
公开(公告)日：2005-08-02
申请号：US09922203
申请日：2001-08-03
CPC分类号： H04L25/0242 , H04B7/04 , H04B2201/70701 , H04L25/0204 , H04L25/0226
摘要： A method and apparatus for increasing in the data rate of a multiple-input and/or multiple-output system that has frequency selective fading by using training sequences with both low normalized auto-correlation and low normalized cross-correlation. Both 1) the sum of the square of the normalized auto-correlation of each training sequence over an auto-correlation window and 2) the sum of the square of the normalized cross-correlation of each pair of the training sequences over a cross-correlation window, are significantly less than unity. In one embodiment of the invention the training sequences are shifted versions of each other, and the low normalized cyclic-auto-correlation of cyclic sequences is significantly less than unity, with each cyclic sequence being N′, N′=N−L+1, symbols of one of the at least two training sequences. In another embodiment, the training sequences are ones where the trace of the inverse of the product of the matrix of training sequences' symbols and the conjugate transpose of this matrix is low. The matrix is a function of the number of symbols over which multipaths of significant power can arrive, the number of training sequences, and the number of symbols in a training sequence. More particularly the matrix is a block-toeplitzmatrix composed of the training symbols.
摘要翻译： 一种用于通过使用具有低归一化自相关和低标准化互相关的训练序列来增加具有频率选择性衰落的多输入和/或多输出系统的数据速率的方法和装置。 两者都是1）自相关窗口上每个训练序列的归一化自相关的平方和的总和，2）互交相关的每对训练序列的归一化互相关的平方和之和 窗口，明显小于团结。 在本发明的一个实施例中，训练序列是彼此的移位版本，循环序列的低归一化循环自相关显着小于单位，每个循环序列为N'，N'= N-L + 1 ，所述至少两个训练序列之一的符号。 在另一个实施例中，训练序列是训练序列符号的矩阵与该矩阵的共轭转置的乘积的逆的轨迹较低的训练序列。 矩阵是有效功率的多径可以到达的符号的数量，训练序列的数量以及训练序列中的符号数的函数。 更具体地，矩阵是由训练符号组成的块对角矩阵。
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68.发明授权Pilot signal transmission in a multi-transmit antenna wireless communication system 有权多发射天线无线通信系统中的导频信号传输公开(公告)号：US06870825B1
公开(公告)日：2005-03-22
申请号：US09655729
申请日：2000-09-06
CPC分类号： H04B7/0613 , H04J13/0048
摘要： Pilot signals transmitted by different antennas in a wireless communication system using multiple transmit antennas are distinguished using different codes. In one embodiment, each of two antennas simultaneously transmit a time slot's worth of data while time division multiplexing a pilot signal with the data. The pilot signal from the first antenna is encoded with a first code such as a Walsh code and the pilot signal from the second antenna is encoded with a different code such as a different Walsh code. The different codes enable a receiver to distinguish the pilot signals when they are received to enable coherent detection of signals transmitted by both of the antennas.
摘要翻译： 使用多个发射天线的无线通信系统中的不同天线发送的导频信号使用不同的码来区分。 在一个实施例中，两个天线中的每一个同时发送时隙的数据，同时对导频信号与数据进行时分复用。 来自第一天线的导频信号用诸如沃尔什码的第一码进行编码，并且来自第二天线的导频信号用不同的代码编码，例如不同的沃尔什码。 不同的代码使得接收机能够在接收到导频信号时区分导频信号，以实现由两个天线发射的信号的相干检测。
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公开(公告)号：US06636500B2
公开(公告)日：2003-10-21
申请号：US09362002
申请日：1999-07-27
IPC分类号： H04B7222
CPC分类号： H04W72/087 , H04L1/0003 , H04L1/0015 , H04W24/00 , H04W28/22 , H04W74/04
摘要： In a system in which the modulation scheme employed may change on a per-time-slot basis, a user's available data rate may change even if the user maintains the same number of time slots, because the capacity of the user's time slots may change. If one or more such changes in modulation scheme occurs, the data rate available to the user may no longer match his current data rate needs. Therefore, a method is disclosed for determining the number of time slots to assign to a user as a function of the user's current data rate requirement and the actual current cumulative data rate of the time slots currently assigned to the user. The user data rate requirement may further be a function of a quality of service (QoS) contracted for by the user. Thus, the assignment of the time slots within the frame is made dynamically and the number of time slots employed by a user is increased or decreased according to the user's current data rate requirements and the ability of the time slots already assigned to the user to meet those requirements.
摘要翻译： 在所采用的调制方案可以在每个时隙的基础上改变的系统中，即使用户维持相同数量的时隙，用户的可用数据速率也可能改变，因为用户时隙的容量可能会改变。 如果发生调制方案中的一个或多个这样的改变，则用户可用的数据速率可能不再符合他当前的数据速率需求。 因此，公开了一种用于根据用户当前数据速率要求和当前分配给用户的时隙的实际当前累积数据速率来确定分配给用户的时隙数量的方法。 用户数据速率要求还可以是由用户签约的服务质量（QoS）的函数。 因此，动态地分配帧内的时隙，并根据用户的当前数据速率要求和已经分配给用户的时隙的能力来增加或减少用户使用的时隙数量 那些要求。
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公开(公告)号：US06490270B1
公开(公告)日：2002-12-03
申请号：US09361430
申请日：1999-07-27
IPC分类号： H04B138
CPC分类号： H04L1/0015 , H04L1/0003
摘要： In a wireless communication system, the constellation mapping scheme employed may be changed on a per-time-slot basis, i.e., from time slot to time slot, so that the constellation used to encode the symbols of each time slot may be different for each time slot within a single frame and may be different for a particular time slot in different consecutive frames. In other words, several constellation mapping schemes are available, with each providing the ability to transmit a different number of bits per symbol, and the particular constellation mapping scheme employed for any time slot need be selected for that time slot only. The ability to use any particular constellation mapping scheme is dependent on the current channel quality. The particular constellation mapping used for the user data of the time slot may be indicated in the preamble of the time slot. To this end, each time slot may have its own preamble that is mapped with a constellation mapping scheme which is a) known a priori, b) may be the same for all time slots, and c) may be different from the constellation mapping scheme used to encode user data in the time slot. A receiver can determine the constellation mapping used for each time slot from solely from the preamble of the time slot.
摘要翻译： 在无线通信系统中，所采用的星座映射方案可以在每个时隙的基础上（即，从时隙到时隙）改变，使得用于编码每个时隙的符号的星座对于每个时隙可以是不同的 时隙在单个帧内，并且对于不同连续帧中的特定时隙可以是不同的。 换句话说，几种星座映射方案是可用的，其中每一种提供了每符号发送不同数量的比特的能力，并且仅对该时隙需要选择用于任何时隙的特定星座映射方案。 使用任何特定星座映射方案的能力取决于当前的信道质量。 用于时隙的用户数据的特定星座映射可以在时隙的前同步码中指示。 为此，每个时隙可以具有与星座映射方案映射的其自己的前同步码，其是a）先验已知的，b）对于所有时隙可以是相同的，并且c）可以不同于星座映射方案 用于在时隙中对用户数据进行编码。 接收机可以从时隙的前导码中确定每个时隙使用的星座映射。
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