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1.发明申请OPTIMAL RESOURCE ALLOCATION IN A MULTI-HOP OFDMA WIRELESS NETWORK WITH COOPERATIVE RELAYING 有权具有合作中继功能的多通道无线网络中的最优资源分配公开(公告)号：US20080225774A1
公开(公告)日：2008-09-18
申请号：US11953105
申请日：2007-12-10
申请人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
发明人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
CPC分类号： H04L5/0058 , H04B7/0617 , H04L5/0023 , H04L5/0037 , H04W28/16 , H04W52/46 , H04W88/04
摘要： An optimal resource allocation strategy for OFDMA multi-hop wireless networks is disclosed. The system allocates one or more resources in a multi-hop network by solving one or more higher-layer sub-problem; solving one or more physical layer and media access control (PHY/MAC) layer sub-problems per tone per time slot with one of cooperative relaying of radio signals or spatial reusing of radio spectrum; updating prices; and allocating radio resources based on the PHY/MAC layer sub-problems.
摘要翻译： 公开了OFDMA多跳无线网络的最优资源分配策略。 系统通过解决一个或多个更高层次的问题，在多跳网络中分配一个或多个资源; 通过无线电信号的协同中继或无线电频谱的空间重用来解决每时隙每个音调的一个或多个物理层和媒体访问控制（PHY / MAC）层子问题; 更新价格; 以及基于PHY / MAC层子问题分配无线电资源。
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2.发明申请公开(公告)号：US20070058664A1
公开(公告)日：2007-03-15
申请号：US11277179
申请日：2006-03-22
申请人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
发明人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
IPC分类号： H04L12/413 , H04L12/43
CPC分类号： H04W74/0808 , H04L12/413 , H04W40/10 , H04W52/0216 , H04W52/0219 , H04W84/18 , Y02D70/22 , Y02D70/326
摘要： A method and apparatus for distributed routing at the network layer of a network is disclosed that integrates contention resolution properties from the MAC layer. In one embodiment, an energy constraint is used in routing at the network layer of a network to determine a first parameter representing the optimal maximum lifetime of a sensor network. If a network link for a transmission is idle, the node may then contend at the MAC layer of the network for a transmission slot across that link. During this contention period, each node is assigned a penalty parameter that is used to represent the probability of a transmission colliding with another transmission across a link in a contention region. As a result of this contention period, network traffic is transmitted from sensor nodes.
摘要翻译： 公开了一种用于在网络的网络层进行分布式路由选择的方法和装置，它集成了来自MAC层的争用解析属性。 在一个实施例中，能量约束用于在网络的网络层进行路由以确定表示传感器网络的最佳最大寿命的第一参数。 如果用于传输的网络链路是空闲的，则节点可以在网络的MAC层处跨越该链路发送传输时隙。 在该竞争时段期间，为每个节点分配一个惩罚参数，该惩罚参数用于表示与争用区域中的链路上的另一个传输相冲突的传输概率。 作为这个争用期的结果，网络流量从传感器节点传输。
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3.发明申请Method and Apparatus for Cross Layer Resource Allocation for Wireless Backhaul Networks 有权用于无线回程网络的跨层资源分配的方法和装置公开(公告)号：US20070111757A1
公开(公告)日：2007-05-17
申请号：US11420137
申请日：2006-05-24
申请人： Min Cao , Xiaodong Wang , Seung-Jun Kim , Mohammad Madihian
发明人： Min Cao , Xiaodong Wang , Seung-Jun Kim , Mohammad Madihian
IPC分类号： H04B1/38
CPC分类号： H04L47/14 , H04W40/00 , H04W40/06 , H04W52/343 , H04W52/346 , H04W52/42 , H04W52/46 , H04W84/18 , Y02D70/142 , Y02D70/146 , Y02D70/22 , Y02D70/322
摘要： A method and apparatus is disclosed whereby the scheduling of network transmissions in a wireless backhaul network is determined using a cross-layer optimization algorithm. In a first embodiment, the algorithm assumes a good MAC layer transmit schedule has been provided and computes optimal network layer routes as well as transmit beam patterns and transmit powers in a semi-distributed manner. According to this embodiment, the optimization goal is the throughput from each access point, or node in the network, to the core network. In another embodiment, an independent set of transmitting nodes is determined at the MAC layer in a way such that no link in the set interferes with another link and no link is scheduled to transmit and receive at the same time. According to this embodiment, a column generation algorithm is used to find a maximal weighted independent set and to achieve optimal network transmission throughput.
摘要翻译： 公开了一种方法和装置，其中使用跨层优化算法确定无线回程网络中网络传输的调度。 在第一实施例中，算法假定已经提供了良好的MAC层传输调度，并且以半分布式的方式计算最佳网络层路由以及发送波束图案和发射功率。 根据该实施例，优化目标是从网络中的每个接入点或节点到核心网络的吞吐量。 在另一个实施例中，在MAC层处确定一组独立的发送节点，使得该组中的链路不与另一个链路干扰，并且没有链路被调度以同时发送和接收。 根据本实施例，使用列生成算法来找到最大加权独立集合并实现最佳网络传输吞吐量。
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4.发明授权Optimal resource allocation in a multi-hop OFDMA wireless network with cooperative relaying 有权具有协同中继的多跳OFDMA无线网络中的最优资源分配公开(公告)号：US07929478B2
公开(公告)日：2011-04-19
申请号：US11953105
申请日：2007-12-10
申请人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
发明人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
IPC分类号： H04B7/14
CPC分类号： H04L5/0058 , H04B7/0617 , H04L5/0023 , H04L5/0037 , H04W28/16 , H04W52/46 , H04W88/04
摘要： An optimal resource allocation strategy for OFDMA multi-hop wireless networks is disclosed. The system allocates one or more resources in a multi-hop network by solving one or more higher-layer sub-problem; solving one or more physical layer and media access control (PHY/MAC) layer sub-problems per tone per time slot with one of cooperative relaying of radio signals or spatial reusing of radio spectrum; updating prices; and allocating radio resources based on the PHY/MAC layer sub-problems.
摘要翻译： 公开了OFDMA多跳无线网络的最优资源分配策略。 系统通过解决一个或多个更高层次的问题，在多跳网络中分配一个或多个资源; 通过无线电信号的协同中继或无线电频谱的空间重用来解决每时隙每个音调的一个或多个物理层和媒体访问控制（PHY / MAC）层子问题; 更新价格; 以及基于PHY / MAC层子问题分配无线电资源。
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5.发明申请Method and Apparatus for Medium Access Control for a Decentralized Network with Adapted Beamforming and Power Control 有权用于具有适应波束形成和功率控制的分散网络的媒体访问控制的方法和装置公开(公告)号：US20070002734A1
公开(公告)日：2007-01-04
申请号：US11276770
申请日：2006-03-14
申请人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
发明人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
CPC分类号： H04W74/02 , H04B7/0408 , H04W28/18 , H04W52/346 , H04W52/42 , H04W74/08 , H04W80/00 , H04W84/18
摘要： A method and apparatus for medium access control in a wireless ad hoc network is disclosed that takes advantage of physical layer properties to jointly and collectively optimize in a distributed fashion transmission parameters such as beam-patterns and transmit powers of all active links in the network. To resolve signal transmission contention, each potential link is associated with a persistence parameter and the persistence parameter is adapted locally, with no central control, to provide medium access for transmissions. Where a node contending for a transmission slot is unable to optimize its transmission parameters due to an invalidity condition or infeasibility condition, the persistence parameter is updated, preferably so as to reduce the probability of such conditions.
摘要翻译： 公开了一种用于无线自组织网络中的媒体接入控制的方法和装置，其利用物理层属性以分布式方式共同和共同地优化诸如网络中所有活动链路的波束模式和发射功率的传输参数。 为了解决信号传输争用，每个潜在链路与持久性参数相关联，并且持久性参数在本地适配，没有中央控制，以提供传输的媒体访问。 在由于无效条件或不可行性条件而竞争发送时隙的节点不能优化其传输参数的情况下，优选地更新持久性参数，以便降低这种条件的可能性。
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6.发明授权Method and apparatus for cross layer resource allocation for wireless backhaul networks 有权用于无线回程网络的跨层资源分配的方法和装置公开(公告)号：US07567543B2
公开(公告)日：2009-07-28
申请号：US11420137
申请日：2006-05-24
申请人： Min Cao , Xiaodong Wang , Seung-Jun Kim , Mohammad Madihian
发明人： Min Cao , Xiaodong Wang , Seung-Jun Kim , Mohammad Madihian
CPC分类号： H04L47/14 , H04W40/00 , H04W40/06 , H04W52/343 , H04W52/346 , H04W52/42 , H04W52/46 , H04W84/18 , Y02D70/142 , Y02D70/146 , Y02D70/22 , Y02D70/322
摘要： A method and apparatus is disclosed whereby the scheduling of network transmissions in a wireless backhaul network is determined using a cross-layer optimization algorithm. In a first embodiment, the algorithm assumes a good MAC layer transmit schedule has been provided and computes optimal network layer routes as well as transmit beam patterns and transmit powers in a semi-distributed manner. According to this embodiment, the optimization goal is the throughput from each access point, or node in the network, to the core network. In another embodiment, an independent set of transmitting nodes is determined at the MAC layer in a way such that no link in the set interferes with another link and no link is scheduled to transmit and receive at the same time. According to this embodiment, a column generation algorithm is used to find a maximal weighted independent set and to achieve optimal network transmission throughput.
摘要翻译： 公开了一种方法和装置，其中使用跨层优化算法确定无线回程网络中网络传输的调度。 在第一实施例中，算法假定已经提供了良好的MAC层传输调度，并且以半分布式的方式计算最佳网络层路由以及发送波束图案和发射功率。 根据该实施例，优化目标是从网络中的每个接入点或节点到核心网络的吞吐量。 在另一个实施例中，在MAC层处确定一组独立的发送节点，使得该组中的链路不与另一个链路干扰，并且没有链路被调度以同时发送和接收。 根据本实施例，使用列生成算法来找到最大加权独立集合并实现最佳网络传输吞吐量。
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7.发明授权Method and apparatus for medium access control for a decentralized network with adapted beamforming and power control 有权用于具有适应波束形成和功率控制的分散网络的媒体访问控制的方法和装置公开(公告)号：US07529222B2
公开(公告)日：2009-05-05
申请号：US11276770
申请日：2006-03-14
申请人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
发明人： Seung-Jun Kim , Xiaodong Wang , Mohammad Madihian
CPC分类号： H04W74/02 , H04B7/0408 , H04W28/18 , H04W52/346 , H04W52/42 , H04W74/08 , H04W80/00 , H04W84/18
摘要： A method and apparatus for medium access control in a wireless ad hoc network is disclosed that takes advantage of physical layer properties to jointly and collectively optimize in a distributed fashion transmission parameters such as beam-patterns and transmit powers of all active links in the network. To resolve signal transmission contention, each potential link is associated with a persistence parameter and the persistence parameter is adapted locally, with no central control, to provide medium access for transmissions. Where a node contending for a transmission slot is unable to optimize its transmission parameters due to an invalidity condition or infeasibility condition, the persistence parameter is updated, preferably so as to reduce the probability of such conditions.
摘要翻译： 公开了一种用于无线自组织网络中的媒体接入控制的方法和装置，其利用物理层属性以分布式方式共同和共同地优化诸如网络中所有活动链路的波束模式和发射功率的传输参数。 为了解决信号传输争用，每个潜在链路与持久性参数相关联，并且持久性参数在本地适配，没有中央控制，以提供传输的媒体访问。 在由于无效条件或不可行性条件而竞争发送时隙的节点不能优化其传输参数的情况下，优选地更新持久性参数，以便降低这种条件的可能性。
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公开(公告)号：US20120275535A1
公开(公告)日：2012-11-01
申请号：US13547422
申请日：2012-07-12
CPC分类号： H04L25/03006 , H04L25/03343 , H04L2025/03426
摘要： A method for wireless encoding includes encoding wireless multiple input and multiple output signals in accordance with a codebook being one of a discrete codebook restricting elements of codebook entries to be within a predetermined finite set of complex numbers and a constant amplitude codebook including each entry in its codebook having equal column norm and equal row norm. In a preferred embodiment the digital codebook further includes restricting elements of a finite set in the discrete codebook to be in the form of ka+jkb for a base-k computer and the constant amplitude codebook further includes being obtained through a series of successive householder transformations. In a preferred embodiment the codebook is configured as one of a constrained codebook in which the codebook is configured for multiple scenarios and a discrete codebook.
摘要翻译： 一种用于无线编码的方法，包括：根据码本中的码本编码无线多输入信号和多输出信号，该码本是将码本条目的元件限制在预定有限的复数集合之内的码本，以及包括其中的每个条目的恒定码本 码本具有相等的列范数和相等的行范数。 在优选实施例中，数字码本还包括将离散码本中的有限集的限制要素限制为基k计算机的形式为ka + jkb，并且恒幅码书还包括通过一系列连续的家庭转换获得 。 在优选实施例中，码本被配置为受限码本之一，其中码本被配置用于多个场景和离散码本。
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公开(公告)号：US20120250791A1
公开(公告)日：2012-10-04
申请号：US13524286
申请日：2012-06-15
CPC分类号： H04L25/03006 , H04L25/03343 , H04L2025/03426
摘要： A method for wireless encoding includes encoding wireless multiple input and multiple output signals in accordance with a codebook being one of a discrete codebook restricting elements of codebook entries to be within a predetermined finite set of complex numbers and a constant amplitude codebook including each entry in its codebook having equal column norm and equal row norm. In a preferred embodiment the digital codebook further includes restricting elements of a finite set in the discrete codebook to be in the form of ka+jkb for a base-k computer and the constant amplitude codebook further includes being obtained through a series of successive householder transformations. In a preferred embodiment the codebook is configured as one of a constrained codebook in which the codebook is configured for multiple scenarios and a discrete codebook.
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公开(公告)号：US08014460B2
公开(公告)日：2011-09-06
申请号：US11613407
申请日：2006-12-20
申请人： Narayan Prasad , Xiaodong Wang , Mohammad Madihian
发明人： Narayan Prasad , Xiaodong Wang , Mohammad Madihian
IPC分类号： H04B7/02
CPC分类号： H04L25/03203 , H04L25/0204
摘要： A MMSE-based deterministic sequential Monte Carlo (SMC) method for MIMO demodulation exhibiting square root complexity in terms of constellation size. Further extensions to the method reduce the search space resulting in significant reduction in computational requirements while minimally impacting performance. As a hard decision algorithm, the methods achieve sphere decoder performance while imposing a much smaller computational load.
摘要翻译： 基于MMSE的确定性顺序蒙特卡罗（SMC）方法，用于在星座大小方面表现出平方根复杂度的MIMO解调。 该方法的进一步扩展减少了搜索空间，导致计算需求的显着降低，同时最小程度上影响了性能。 作为硬判决算法，该方法实现了球体解码器的性能，同时施加了更小的计算量。
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