Protocol Data Units and Header in Multihop Relay Network
    42.
    发明申请
    Protocol Data Units and Header in Multihop Relay Network 失效
    多跳中继网络中的协议数据单元和报头

    公开(公告)号:US20120236780A1

    公开(公告)日:2012-09-20

    申请号:US13422922

    申请日:2012-03-16

    IPC分类号: H04W80/00

    摘要: The invention provides a data structure embodied in a computer readable media. The data structure is a protocol data packet (PDU) communicated in a mobile multihop network between stations. The data structure includes a relay media access header, a payload and an optional cyclical redundancy checksum for the protocol data unit, and an indication whether the PDU is a relay media access protocol data unit or not.

    摘要翻译: 本发明提供一种体现在计算机可读介质中的数据结构。 数据结构是在站之间的移动多跳网络中通信的协议数据分组(PDU)。 数据结构包括用于协议数据单元的中继媒体接入报头,有效载荷和可选的循环冗余校验和,以及PDU是否是中继媒体接入协议数据单元的指示。

    Ranking nodes in networks with topologies arranged as directed acyclic graphs
    43.
    发明授权
    Ranking nodes in networks with topologies arranged as directed acyclic graphs 有权
    将拓扑中的节点排列为有向无环图

    公开(公告)号:US08270313B2

    公开(公告)日:2012-09-18

    申请号:US12618235

    申请日:2009-11-13

    IPC分类号: H04L12/28

    摘要: Embodiments of the invention disclose a system and a method for determining a rank of a node in a multi-hop wireless network, wherein the network includes a gateway node, client nodes, and relay nodes, wherein a node p(i) is a default parent of the node i having a rank, and the network uses a directed acyclic graph (DAG) topology. The method comprises steps of transmitting at least one data packet from the node to the default parent node over a wireless link; counting a number of successful transmissions of most recent transmissions of data packets; determining an expected transmission time (ETX) for the wireless link based on the number of successful transmissions in the most recent transmissions; and assigning a rank R(i) to the node based on the rank of the parent node and the ETX.

    摘要翻译: 本发明的实施例公开了一种用于确定多跳无线网络中的节点的等级的系统和方法,其中所述网络包括网关节点,客户端节点和中继节点,其中节点p(i)是默认的 具有等级的节点的父节点,并且网络使用有向非循环图(DAG)拓扑。 该方法包括以下步骤:通过无线链路将来自节点的至少一个数据分组发送到默认父节点; 计数数据分组的最近传输的成功传输的数量; 基于最近传输中成功传输的数量确定无线链路的预期传输时间(ETX); 并且基于父节点和ETX的等级将节点R(i)分配给节点。

    Graph-based method for dynamic fractional frequency reuse
    44.
    发明授权
    Graph-based method for dynamic fractional frequency reuse 有权
    用于动态分数次频率重用的基于图形的方法

    公开(公告)号:US08023462B2

    公开(公告)日:2011-09-20

    申请号:US12205554

    申请日:2008-09-05

    IPC分类号: H04W4/00

    摘要: A method allocates frequency subchannels in an orthogonal frequency-division multiple access (OFDMA) network including a set of base stations and a set of mobile stations for each base station. A graph of nodes and edges is constructed, in which the nodes represent the mobile stations in the network, and the edges connecting the nodes represent subchannel allocation constraints to be satisfied for the mobile stations represented by the nodes. The nodes are colored with colors selected from a set of colors such that subchannel allocation constraints of a pair of nodes connected by one of the edges are satisfied. The subchannels are allocated to the mobile stations according to the colors of the corresponding the nodes.

    摘要翻译: 一种方法在包括一组基站和每个基站的一组移动台的正交频分多址(OFDMA)网络中分配频率子信道。 构建节点和边缘的图,其中节点表示网络中的移动站,并且连接节点的边表示子节点分配约束,以便为由节点表示的移动站满足。 节点用从一组颜色中选择的颜色着色,使得由一个边缘连接的一对节点的子信道分配约束得到满足。 子信道根据相应节点的颜色分配给移动台。

    Method and system for enabling HARQ operations on channels between stations in wireless communication networks
    45.
    发明授权
    Method and system for enabling HARQ operations on channels between stations in wireless communication networks 失效
    用于在无线通信网络中的站之间的信道上实现HARQ操作的方法和系统

    公开(公告)号:US07630355B2

    公开(公告)日:2009-12-08

    申请号:US11620123

    申请日:2007-01-05

    IPC分类号: H04J1/00

    摘要: A method and system enables and improves performance of hybrid automatic repeat request (HARQ) operations on channels between stations of an orthogonal frequency division multiple access (OFDMA) wireless communication network. There, the number of parallel HARQ channels is increased adaptively, and one connection identifier is used to unambiguously identify a set of MAC protocol data units (MPDUs) communicated over parallel HARQ channels. A sequence number is used to avoid out-of-order MPDU delivery when MPDUs are transmitted over parallel HARQ channels. The MPDUs can be concatenated or encapsulated. The maximum number of the parallel HARQ channels can be increased to 256, and can be negotiated when a station enters or re-enters the network.

    摘要翻译: 一种方法和系统能够在正交频分多址(OFDMA)无线通信网络的站之间的信道上实现并提高混合自动重传请求(HARQ)操作的性能。 在此,自适应地增加并行HARQ信道的数量,并且使用一个连接标识符来明确地标识通过并行HARQ信道传送的一组MAC协议数据单元(MPDU)。 当MPDU通过并行HARQ信道发送时,序列号用于避免无序MPDU传送。 MPDU可以级联或封装。 并行HARQ信道的最大数量可以增加到256,并且当站进入或重新进入网络时可以协商。

    Analogue Beamforming
    46.
    发明申请
    Analogue Beamforming 审中-公开
    模拟波束成形

    公开(公告)号:US20090225728A1

    公开(公告)日:2009-09-10

    申请号:US12358467

    申请日:2009-01-23

    IPC分类号: H04B7/212 H04W4/00

    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。

    Antenna Selection for SDMA Transmissions in OFDMA Networks
    47.
    发明申请
    Antenna Selection for SDMA Transmissions in OFDMA Networks 审中-公开
    OFDMA网络中SDMA传输的天线选择

    公开(公告)号:US20090124290A1

    公开(公告)日:2009-05-14

    申请号:US11937883

    申请日:2007-11-09

    IPC分类号: H04M1/00

    摘要: A method for selects antennas in a spatial division multiple access (SDMA) wireless network that includes a base station and a set of mobile stations, in which the set of mobile stations includes one or more designated mobile stations, and in which each designated mobile station has a set of multiple antennas. Channel state information (CSI) is acquired for a channel between each mobile station in the set of mobile stations and the base station, and in which the CSI for each designated mobile station is acquired for different subsets of the set of multiple antennas at each designated mobile station. For each designated mobile station, a globally optimal subset of the set of antennas is selected based on the CSI acquired from all the mobile stations.

    摘要翻译: 一种用于在包括基站和一组移动台的空分多址(SDMA)无线网络中选择天线的方法,其中所述一组移动站包括一个或多个指定的移动站,并且其中每个指定的移动站 有一套多个天线。 对于移动站组和基站中的每个移动站之间的信道获取信道状态信息(CSI),并且其中为每个指定的多个天线集合的不同子集获取每个指定的移动站的CSI 移动台。 对于每个指定的移动站,基于从所有移动站获取的CSI来选择该组天线的全局最佳子集。

    Protocol data units and header in multihop relay network
    48.
    发明授权
    Protocol data units and header in multihop relay network 失效
    多跳中继网络中的协议数据单元和报头

    公开(公告)号:US08599741B2

    公开(公告)日:2013-12-03

    申请号:US13422922

    申请日:2012-03-16

    IPC分类号: H04L29/06

    摘要: The invention provides a data structure embodied in a computer readable media. The data structure is a protocol data packet (PDU) communicated in a mobile multihop network between stations. The data structure includes a relay media access header, a payload and an optional cyclical redundancy checksum for the protocol data unit, and an indication whether the PDU is a relay media access protocol data unit or not.

    摘要翻译: 本发明提供一种体现在计算机可读介质中的数据结构。 数据结构是在站之间的移动多跳网络中通信的协议数据分组(PDU)。 数据结构包括用于协议数据单元的中继媒体接入报头,有效载荷和可选的循环冗余校验和,以及PDU是否是中继媒体接入协议数据单元的指示。

    Dynamic fractional frequency reuse in OFDMA networks
    49.
    发明授权
    Dynamic fractional frequency reuse in OFDMA networks 有权
    OFDMA网络中的动态分数频率重用

    公开(公告)号:US08175035B2

    公开(公告)日:2012-05-08

    申请号:US12263236

    申请日:2008-10-31

    IPC分类号: H04W4/00

    摘要: A method allocates resources in an orthogonal frequency-division multiple access (OFDMA) network including a set of base stations (BSs), and a set of mobile stations (MSs) for each BS. Each cell includes a center and edge zone. A node weighted constraint graph is constructed for the network. Maximal independent sets in the graph are searched as sub-channels are allocated to the MSs in edge zones. Remaining bandwidth is allocated to the MSs in the center zones. Power is assigned to the sub-channels so that inter-cell interference is minimized and traffic load is maximized.

    摘要翻译: 一种方法在包括一组基站(BS)的正交频分多址(OFDMA)网络和每个BS的一组移动台(MS)中分配资源。 每个单元格包括一个中心和边缘区域。 为网络构建节点加权约束图。 当边缘区域中的MS分配子信道时,搜索图中的最大独立集合。 剩余带宽被分配给中心区域中的MS。 功率被分配给子信道,使得小区间干扰最小化并且业务负载最大化。

    Clustering based resource allocation in multi-cell OFDMA networks
    50.
    发明授权
    Clustering based resource allocation in multi-cell OFDMA networks 有权
    在多小区OFDMA网络中基于聚类的资源分配

    公开(公告)号:US08144657B2

    公开(公告)日:2012-03-27

    申请号:US12393820

    申请日:2009-02-26

    IPC分类号: H04Q7/00

    摘要: A method allocates resource in an Orthogonal Frequency-Division Multiple Access (OFDMA) network, including a set of Base Stations (BSs) and a set of Mobile Stations (MSs) for each BS. OFDMA frame are constructed as multiple resource blocks, and each resource block contains symbols transmitted on different subcarriers. A cluster is formed from adjacent sectors of different neighboring cells to jointly optimize the resource allocation in multiple frames, and three non-overlap zones are sequentially identified in cluster: cell center zone, cell edge zone, and cluster corner zone. Resource allocation includes intra-cluster proportional fair scheduling and inter-cluster interference mitigation. Intra-cluster scheduling further includes resource allocation for cell center zone and resource allocation for cell edge zone.

    摘要翻译: 一种方法在正交频分多址(OFDMA)网络中分配资源,包括一组基站(BS)和一组用于每个BS的移动站(MS)。 OFDMA帧被构造为多个资源块,每个资源块包含在不同子载波上发送的符号。 从不同相邻小区的相邻扇区形成一个簇,共同优化多个帧中的资源分配,并在簇:小区中心区域,小区边缘区域和群集角区域中顺序识别出三个非重叠区域。 资源分配包括群内比例公平调度和集群间干扰减轻。 集群内调度还包括用于小区中心区的资源分配和小区边缘区域的资源分配。