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公开(公告)号：US20090225883A1
公开(公告)日：2009-09-10
申请号：US12403025
申请日：2009-03-12
CPC分类号： H04W72/046 , H04W4/08 , H04W24/10 , H04W72/085
摘要： A base station transmits a set of sounding requests to a set of mobile station (MS) in a cell, using a set of beams, wherein there is one beam for each sounding request. Qualities of sounding signals transmitted by the set of MSs in response to receiving the sounding request are measured, and the set of MSs are grouping into subsets according to the qualities, wherein there is one subset of MSs associated with each beam.
摘要翻译： 基站使用一组波束向小区中的一组移动台（MS）发送一组探测请求，其中对于每个探测请求存在一个波束。 测量响应于接收到探测请求的MS组发送的探测信号的质量，并且根据质量将MS组合成子集，其中存在与每个波束相关联的MS的一个子集。
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公开(公告)号：US08274930B2
公开(公告)日：2012-09-25
申请号：US12403025
申请日：2009-03-12
IPC分类号： H04W4/00
CPC分类号： H04W72/046 , H04W4/08 , H04W24/10 , H04W72/085
摘要： A base station transmits a set of sounding requests to a set of mobile station (MS) in a cell, using a set of beams, wherein there is one beam for each sounding request. Qualities of sounding signals transmitted by the set of MSs in response to receiving the sounding request are measured, and the set of MSs are grouped into subsets according to the qualities, wherein there is one subset of MSs associated with each beam.
摘要翻译： 基站使用一组波束向小区中的一组移动台（MS）发送一组探测请求，其中对于每个探测请求存在一个波束。 测量响应于接收到探测请求的MS组发送的探测信号的质量，并且根据质量将MS组合成子集，其中存在与每个波束相关联的MS的一个子集。
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公开(公告)号：US20090225728A1
公开(公告)日：2009-09-10
申请号：US12358467
申请日：2009-01-23
CPC分类号： H04W16/28 , H04B7/043 , H04B7/0634 , H04B7/0671
摘要： An orthogonal frequency division multiple access (OFDMA) network including a base station (BS) associated with a set of mobile stations (MS) in a cell. The set of MS are grouped into sets of active MS, wherein each set of active MS corresponds to a beam formed at the BS. The BS transmits a down link (DL) subframe using analog beam forming (ABF), wherein the DL subframe has one ABF zone for each set of active MS and each corresponding beam.
摘要翻译： 一种正交频分多址（OFDMA）网络，包括与小区中的一组移动站（MS）相关联的基站（BS）。 该组MS被分组成活动MS集合，其中每组有效MS对应于在BS处形成的一个波束。 BS使用模拟波束形成（ABF）发送下行链路（DL）子帧，其中DL子帧对于每组有效MS和每个对应的波束具有一个ABF区。
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公开(公告)号：US20090225720A1
公开(公告)日：2009-09-10
申请号：US12358619
申请日：2009-01-23
申请人： Andreas F. Molisch , Zhifeng Tao , Philip V. Orlik , Jinyun Zhang , Lun Dong , Lingjia Liu , Toshiyuki Kuze
发明人： Andreas F. Molisch , Zhifeng Tao , Philip V. Orlik , Jinyun Zhang , Lun Dong , Lingjia Liu , Toshiyuki Kuze
CPC分类号： H04L25/0226 , H04B7/022 , H04B7/0495
摘要： A method estimates channels in a wireless cooperative cellular network including a set of base stations, and each base station communicates cooperatively with a set of mobile stations. A first sounding signal including a first midamble is transmitted from a first base station to a first mobile station. A second sounding signal including a second midamble is transmitted simultaneously from a second base station to the first mobile station, wherein the first and second midamble are disjoint in time, and wherein the first and second midambles are used to estimate the channels between the first base station and the first mobile station, and the second base station and the first mobile station, respectively.
摘要翻译： 一种方法估计包括一组基站的无线协作蜂窝网络中的信道，并且每个基站与一组移动台协作通信。 包括第一中间码的第一探测信号从第一基站发射到第一移动站。 包括第二中间码的第二探测信号从第二基站同时发送到第一移动站，其中第一和第二中间码在时间上是不相交的，并且其中第一和第二中间码被用于估计第一基站 站和第一移动站，第二基站和第一移动站。
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公开(公告)号：US20100254369A1
公开(公告)日：2010-10-07
申请号：US12419874
申请日：2009-04-07
CPC分类号： H04L1/1621 , H04L27/26 , H04L2001/0093 , H04L2001/0097
摘要： A network includes a master node (master) and a set of slave nodes (slaves). The network uses orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. During a first downlink transmission from the master to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves is broadcast. Each slave transmits simultaneously to the master using uplinks and the assigned sub-carriers, a first response packet after receiving the broadcast polling packet. The master then broadcasts using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet include one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time.
摘要翻译： 网络包括主节点（主节点）和一组从节点（从节点）。 该网络在子载波上使用正交频分复用（OFDM）和时分多址（TDMA）符号。 在使用下行链路和所有子载波从主机到从机组的第一次下行链路传输期间，广播包括用于每个从机的数据分组的广播轮询分组和用于从机的子载波分配。 每个从设备使用上行链路和分配的子载波同时发送到主设备，第一响应分组在接收到广播轮询分组之后。 然后主机使用下行链路和所有子载波，一组确认分组广播，其中广播轮询分组，响应分组和组确认分组在一个通信周期中包括一个超帧，并且其中在下行链路上进行广播 并且在上行链路上的发送在时间上是不相交的。
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公开(公告)号：US20090016372A1
公开(公告)日：2009-01-15
申请号：US12117219
申请日：2008-05-08
申请人： Zhifeng Tao , Andreas F. Molisch , Philip V. Orlik , Jinyun Zhang , Shigeru Uchida , Kentarou Sawa
发明人： Zhifeng Tao , Andreas F. Molisch , Philip V. Orlik , Jinyun Zhang , Shigeru Uchida , Kentarou Sawa
IPC分类号： H04J3/16
CPC分类号： H04B7/0874 , H04B7/063 , H04B7/0691 , H04L5/0007
摘要： A method selects antennas in an OFDMA wireless network including a base station and a mobile station. The mobile station measures a channel state of a downlink in a downlink subframe using different subsets of available antennas, and selects a subset of receive antennas for downlink reception based on the channel states between the base station and the different subsets of antennas at the mobile station. The base station measures the channel state in an uplink using an uplink subframe received in the base station from the mobile station, and selects a subset of transmit antennas for mobile station's uplink transmission based on the channel states between the base station and different subset of antennas at the mobile station.
摘要翻译： 一种方法选择包括基站和移动台的OFDMA无线网络中的天线。 移动站使用不同的可用天线子集来测量下行链路子帧中的下行链路的信道状态，并且基于移动站的基站和不同的天线子集之间的信道状态来选择用于下行链路接收的接收天线的子集 。 基站使用来自移动站的基站中接收到的上行链路子帧来测量上行链路中的信道状态，并且基于基站和不同的天线子集之间的信道状态来选择用于移动台的上行链路传输的发射天线的子集 在移动台。
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公开(公告)号：US08218523B2
公开(公告)日：2012-07-10
申请号：US12419874
申请日：2009-04-07
IPC分类号： H04J3/16
CPC分类号： H04L1/1621 , H04L27/26 , H04L2001/0093 , H04L2001/0097
摘要： A network includes a master node (master) and a set of slave nodes (slaves). The network uses orthogonal frequency-division multiplexing (OFDM) and time division multiple access (TDMA) symbols on sub-carriers. During a first downlink transmission from the master to the set of slaves using downlinks and all of the sub-carriers, a broadcast polling packet including data packets for each slave and sub-carrier assignments for the slaves is broadcast. Each slave transmits simultaneously to the master using uplinks and the assigned sub-carriers, a first response packet after receiving the broadcast polling packet. The master then broadcasts using the downlinks and all of the sub-carriers, a group acknowledgement packet, wherein the broadcast polling packet, the response packet, and the group acknowledgement packet include one superframe in one communication cycle, and wherein the broadcasting on the downlinks and the transmitting on the uplinks are disjoint in time.
摘要翻译： 网络包括主节点（主节点）和一组从节点（从节点）。 该网络在子载波上使用正交频分复用（OFDM）和时分多址（TDMA）符号。 在使用下行链路和所有子载波从主机到从机组的第一次下行链路传输期间，广播包括用于每个从机的数据分组的广播轮询分组和用于从机的子载波分配。 每个从设备使用上行链路和分配的子载波同时发送到主设备，第一响应分组在接收到广播轮询分组之后。 然后主机使用下行链路和所有子载波，一组确认分组广播，其中广播轮询分组，响应分组和组确认分组在一个通信周期中包括一个超帧，并且其中在下行链路上进行广播 并且在上行链路上的发送在时间上是不相交的。
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公开(公告)号：US08179990B2
公开(公告)日：2012-05-15
申请号：US12212609
申请日：2008-09-17
CPC分类号： H04L1/1816 , H04L1/0606 , H04L1/0631 , H04L1/0662 , H04L1/1819 , H04L1/1845
摘要： A method transmits a sequence of symbols in a multiple-input multiple-output (MIMO) network including a transmitter having a set of transmit antennas and a receiver having a set of receive antennas. The sequence of symbols is represented by a vector S=[S1 S2 S3 S4]T of individual symbols, where T is a transpose operator. The individual symbols are transmitted as a transmit matrix S = [ S 1 - S 2 * S 1 - S 2 * S 2 S 1 * S 2 S 1 * S 3 - S 4 * - S 3 S 4 * S 4 S 3 * - S 4 - S 3 * ] , where * is a complex conjugate, and wherein each column of the matrix S represents the symbols transmitted at each transmission interval, and subscripts index the set of transmit antennas.
摘要翻译： 一种方法在包括具有一组发射天线的发射机和具有一组接收天线的接收机的多输入多输出（MIMO）网络中发送符号序列。 符号序列由单个符号的矢量S = [S1 S2 S3 S4] T表示，其中T是转置运算符。 各个符号作为发送矩阵发送S = [S 1 -S 2 * S 1 -S 2 * S 2 S 1 * S 2 S 1 * S 3 -S 4 * -S 3 S 4 * S 4 S 3 * - S 4 -S 3 *]，其中*是复共轭，并且其中矩阵S的每列表示在每个传输间隔处发送的符号，下标索引发射天线集合。
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公开(公告)号：US20090262852A1
公开(公告)日：2009-10-22
申请号：US12212609
申请日：2008-09-17
IPC分类号： H04B7/02
CPC分类号： H04L1/1816 , H04L1/0606 , H04L1/0631 , H04L1/0662 , H04L1/1819 , H04L1/1845
摘要： A method transmits a sequence of symbols in a multiple-input multiple-output (MIMO) network including a transmitter having a set of transmit antennas and a receiver having a set of receive antennas. The sequence of symbols is represented by a vector S=[S1 S2 S3 S4]T of individual symbols, where T is a transpose operator. The individual symbols are transmitted as a transmit matrix S = [ S 1 - S 2 * S 1 - S 2 * S 2 S 1 * S 2 S 1 * S 3 - S 4 * - S 3 S 4 * S 4 S 3 * - S 4 - S 3 * ] , where * is a complex conjugate, and wherein each column of the matrix S represents the symbols transmitted at each transmission interval, and subscripts index the set of transmit antennas.
摘要翻译： 一种方法在包括具有一组发射天线的发射机和具有一组接收天线的接收机的多输入多输出（MIMO）网络中发送符号序列。 符号序列由单个符号的矢量S = [S1 S2 S3 S4] T表示，其中T是转置运算符。 各个符号作为发送矩阵发送S = [S 1 -S 2 * S 1 -S 2 * S 2 S 1 * S 2 S 1 * S 3 -S 4 * -S 3 S 4 * S 4 S 3 * - S 4 -S 3 *]，其中*是复共轭，并且其中矩阵S的每列表示在每个传输间隔处发送的符号，下标索引发射天线集合。
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公开(公告)号：US20090180459A1
公开(公告)日：2009-07-16
申请号：US12240164
申请日：2008-09-29
申请人： Philip V. Orlik , Andreas F. Molisch , Zhifeng Tao , Jinyun Zhang
发明人： Philip V. Orlik , Andreas F. Molisch , Zhifeng Tao , Jinyun Zhang
CPC分类号： H04L5/0094 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/0089
摘要： A method communicates symbols in a cell of a multiple-input multiple-output (MIMO) network that includes a set of mobile station and a base station. The symbols are communicated using orthogonal frequency division multiplexing (OFDM) and time division duplex (TDM). A frame for communicating the symbols between the base station and the mobile station is constructed. The frame is partitioned into a downlink subframe and an uplink subframe. The uplink subframe is partitioned into a first zone and a second zone, wherein the first zone uses orthogonal frequency division multiple access (OFDMA) and the second zone uses single carrier frequency division multiple access (SC-FDMA).
摘要翻译： 一种方法在包括一组移动台和基站的多输入多输出（MIMO）网络的小区中传送符号。 使用正交频分复用（OFDM）和时分双工（TDM）来传送符号。 构建用于在基站和移动站之间传送符号的帧。 帧被划分为下行链路子帧和上行链路子帧。 上行链路子帧被划分为第一区域和第二区域，其中第一区域使用正交频分多址（OFDMA），第二区域使用单载波频分多址（SC-FDMA）。
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