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公开(公告)号：US20110243045A1
公开(公告)日：2011-10-06
申请号：US13038878
申请日：2011-03-02
申请人： Ngoc-Dung DAO , Fengming Cao , Yong Sun
发明人： Ngoc-Dung DAO , Fengming Cao , Yong Sun
CPC分类号： H04L25/03343 , H04B7/0452 , H04B7/0854
摘要： According to one embodiment there is provided a method performed in a transmitter side of a multiuser minimum square error linear precoding MIMO system that comprises a transmitter with a plurality of transmit antennae and a plurality of receivers. Each receiver of the plurality of receivers comprises a plurality of receive antennae. The method is a method of scheduling receivers from among the plurality of receivers and comprises obtaining, for some or all of the receivers, receiver channel information that quantifies the properties of transmit channels between receiver antennae of the receiver and transmit antennae of the transmitter and establishing an order for determining the receiver combining vectors of the some or all of the receivers. The order is established by selecting as a next receiver in the order a so far unselected receiver from the some or all of the receivers that minimally increases the mean square data transmission error. The establishing of the order is based on the channel information of any receivers previously selected in the order and of unselected receivers.
摘要翻译： 根据一个实施例，提供了一种在多用户最小平方误差线性预编码MIMO系统的发射机侧执行的方法，其包括具有多个发射天线和多个接收机的发射机。 多个接收机的每个接收机包括多个接收天线。 该方法是从多个接收机之间调度接收机的方法，包括为接收机的一些或全部获得接收机信道信息，其量化接收机的接收机天线与发射机的发射天线之间的发射信道的属性，并建立 用于确定接收机的一些或所有接收机的组合向量的顺序。 通过以最小程度地增加均方数据传输误差的一些或所有接收器的顺序选择到目前为止的未选择的接收器的顺序来选择下一个接收器。 订单的建立是基于先前在订单中选择的任何接收器和未选择的接收器的信道信息。
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公开(公告)号：US20100246715A1
公开(公告)日：2010-09-30
申请号：US12724814
申请日：2010-03-16
申请人： Ngoc-Dung DAO , Yong Sun
发明人： Ngoc-Dung DAO , Yong Sun
IPC分类号： H04L27/00
CPC分类号： H04J11/0033 , H04L25/0244 , H04L25/03343
摘要： In a wireless communications system, a method of processing data prior to transmission thereof to a plurality of stations. The method includes determining a channel matrix using a plurality of weighted channel responses, each of which is associated with one of the plurality of stations and weighted by a gain factor corresponding to the station, wherein the gain factor is inversely proportional to a noise power of the station. The data is then processed in accordance with a precoding scheme using the determined channel matrix.
摘要翻译： 在无线通信系统中，一种在将数据发送到多个站之前处理数据的方法。 该方法包括使用多个加权信道响应来确定信道矩阵，每个信道响应与多个站中的一个相关联，并且通过对应于该站的增益因子进行加权，其中增益因子与噪声功率成反比 车站。 然后根据使用所确定的信道矩阵的预编码方案来处理数据。
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公开(公告)号：US20170171114A1
公开(公告)日：2017-06-15
申请号：US14967807
申请日：2015-12-14
申请人： Ngoc-Dung DAO , Hang ZHANG
发明人： Ngoc-Dung DAO , Hang ZHANG
IPC分类号： H04L12/879
CPC分类号： H04L67/2842
摘要： Methods and apparatus for managing data content among in-network caches of a communication network are provided. In some embodiments, multiple registers are maintained for indexing cached data content. Different data content is indexed in different registers based on parameters such as popularity or content freshness. Customized popularity estimators can be applied to each register, and data content may be indexed by different registers as parameters change. Less popular content can be removed from caches as required. In some embodiments, caches can be grouped into clusters, and deletion of data content from a cache may be modified or inhibited if the cluster still requires a copy of that data content. Data content can be moved between caches of a cluster based on popularity.
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公开(公告)号：US20170264702A1
公开(公告)日：2017-09-14
申请号：US15064221
申请日：2016-03-08
申请人： Ngoc-Dung DAO
发明人： Ngoc-Dung DAO
IPC分类号： H04L29/08 , H04L12/879
CPC分类号： H04L67/2842 , H04L41/50 , H04L49/901 , H04L67/1097 , H04L67/2885
摘要： A method for managing a cache memory network according to a distributed hierarchical cache model is disclosed. The distributed hierarchical cache model includes a plurality of cache levels each corresponding to a delivery rank for delivering data content to users of the cache memory network. The method includes dividing at least one cache memory of the cache memory network into a plurality of cache segments, mapping each of the cache segments to a cache level of the distributed hierarchical cache model, and performing cache management operations over the cache memory network according to the distributed hierarchical cache model.
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公开(公告)号：US20170257452A1
公开(公告)日：2017-09-07
申请号：US15059013
申请日：2016-03-02
CPC分类号： H04L67/2842 , G06F12/084 , G06F2212/60 , G06N3/08
摘要： A method for managing a cache memory network is disclosed. The method comprises estimating the popularity of a piece of data content according to an extreme learning machine, and managing the cache memory network according to the estimated popularity of the piece of data content. Estimation may be performed upon a request for the piece of data content, and may be accordingly cashed into an appropriate cache memory device upon estimation of its popularity.
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公开(公告)号：US20170126832A1
公开(公告)日：2017-05-04
申请号：US14928165
申请日：2015-10-30
申请人： Ngoc-Dung DAO , Hamidreza FARMANBAR , Xu LI
发明人： Ngoc-Dung DAO , Hamidreza FARMANBAR , Xu LI
CPC分类号： H04L67/2842 , H04L43/0852 , H04L43/16 , H04L67/10
摘要： A method and apparatus for deploying a set of network caches in a communication network is provided. A set of network nodes is identified such that, for each of a set of client device locations, and for at least a number c of the set of nodes, output of a coverage cost function is no greater than a threshold. The coverage cost function receives as input a client location and one of the nodes. The set of network caches are then located at the respective set of nodes. The set of network nodes can be selected from plural candidate sets based on a utility criterion. The candidate sets can be generated by successive addition and/or removal of nodes. Information obtained from a Traffic Engineering function can be used to direct selection of the set of nodes. A cache-client association can be generated for directing clients to particular caches.
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