公开(公告)号：US20060084439A1

公开(公告)日：2006-04-20

申请号：US11251674

申请日：2005-10-17

申请人： Avinash Joshi ,  Shyamai Ramachandran

发明人： Avinash Joshi ,  Shyamai Ramachandran

IPC分类号： H04Q7/20

CPC分类号： H04W36/30 ,  H04W36/12

摘要： A system and method for facilitating inter-frequency handoff of a mobile node (102) in a wireless communication network (100). The system and method permit a mobile node (102), equipped with a single receiver, to perform handoffs seamlessly from one infrastructure node (106-1) to another infrastructure node (106-2) without having to scan through multiple frequencies and without having to interrupt the active communication session.

摘要翻译： 一种用于促进无线通信网络（100）中的移动节点（102）的频率间切换的系统和方法。 所述系统和方法允许配备有单个接收机的移动节点（102）从一个基础设施节点（106-1）到另一个基础设施节点（106-2）无缝地执行切换，而不必扫描多个频率并且不具有 中断主动通信会话。

公开(公告)号：US08811234B2

公开(公告)日：2014-08-19

申请号：US13406298

申请日：2012-02-27

申请人： Hrishikesh Gossain ,  Ian D. Chakeres ,  Ravindra Guntur ,  Avinash Joshi

发明人： Hrishikesh Gossain ,  Ian D. Chakeres ,  Ravindra Guntur ,  Avinash Joshi

IPC分类号： H04L12/28

CPC分类号： H04W40/02 ,  H04L45/124 ,  H04L45/302

摘要： A method provides for differentiating usage permissions between different categories of communication traffic within a given network. The method includes ensuring one or more categories of traffic never transits communication radios, link, and/or spectrums dedicated to a different category of traffic. A combined routing metric is calculated using a scaling factor for discouraging usage of restricted communication links and encouraging usage of non-restricted communication links.

摘要翻译： 一种方法提供用于区分给定网络内的不同类别的通信流量之间的使用许可。 该方法包括确保一个或多个类别的业务不会传输专用于不同业务类别的通信无线电，链路和/或频谱。 使用缩放因子计算组合路由度量，以阻止受限通信链路的使用，并鼓励使用非限制性通信链路。

公开(公告)号：US08630197B2

公开(公告)日：2014-01-14

申请号：US12888742

申请日：2010-09-23

申请人： Yuechun Chu ,  John M. Belcea ,  Avinash Joshi

发明人： Yuechun Chu ,  John M. Belcea ,  Avinash Joshi

IPC分类号： G01R31/08

CPC分类号： H04W28/06 ,  H04L1/0007 ,  H04W28/22

摘要： A method is provided to determine optimal data rate and packet length in mobile networks. The method directly determines the optimal packet length (L) and data rate (D), which allows fast convergence in the mobile channel. The method automatically identifies and quantifies channel conditions, as well as adjusts parameters according to changes of channel conditions. A variable (Channel condition Index (CCI)) is abstracted from simulations and then used to describe and quantify the impact of three components of channel conditions: signal-to-noise ratio (SNR), multipath environment and velocity. Based on packet completion rate (PCR) status, the channel condition is identified in terms of CCI value. Once CCI is identified, the model of effective throughput G is directly optimized to locate the best packet length (L) and data rate (D).

摘要翻译： 提供了一种确定移动网络中的最佳数据速率和分组长度的方法。 该方法直接确定了最佳分组长度（L）和数据速率（D），从而可以在移动通道中快速收敛。 该方法自动识别和量化信道状况，并根据信道条件的变化调整参数。 变量（信道条件索引（CCI））从仿真中抽象出来，然后用于描述和量化信道条件的三个组成部分的影响：信噪比（SNR），多径环境和速度。 根据分组完成率（PCR）状态，通过CCI值来识别信道状态。 一旦CCI被识别，有效吞吐量G的模型被直接优化以定位最佳分组长度（L）和数据速率（D）。

公开(公告)号：US20130249672A1

公开(公告)日：2013-09-26

申请号：US13598785

申请日：2012-08-30

申请人： Avinash Joshi ,  Saurabh Bhargava ,  Radhakrishnan Suryanarayanan

发明人： Avinash Joshi ,  Saurabh Bhargava ,  Radhakrishnan Suryanarayanan

IPC分类号： G06K7/01 ,  G08B5/22

CPC分类号： G01S5/0289 ,  G01C21/206

摘要： Indoor locationing using radio frequency based tags includes distributing a plurality of radio frequency based tags at mapped locations within the indoor environment. The radio frequency based tags periodically transmit their identity information in a message. A mobile device in proximity to at least one of the radio frequency based tags receives the message. A location of the mobile device is associating to the mapped location of the radio frequency based tag identified in the received message.

摘要翻译： 使用基于射频标签的室内定位包括在室内环境中的映射位置处分布多个基于射频的标签。 基于射频的标签在消息中周期性地发送其身份信息。 靠近至少一个基于射频的标签的移动设备接收该消息。 移动设备的位置与在接收到的消息中标识的基于射频的标签的映射位置相关联。

公开(公告)号：US07944905B2

公开(公告)日：2011-05-17

申请号：US11754746

申请日：2007-05-29

申请人： Avinash Joshi ,  Michael S. Johnson ,  Manish Shukla

发明人： Avinash Joshi ,  Michael S. Johnson ,  Manish Shukla

IPC分类号： H04B7/212

CPC分类号： H04W64/00 ,  H04W48/08 ,  H04W48/16 ,  H04W72/0406 ,  H04W84/18

摘要： Disclosed is a method for dynamically identifying locations of a plurality of mobile nodes in a time division multiple access (TDMA) based ad hoc communication network, wherein one or more mobile nodes are being moved in and out of a predefined region. The method comprises allocating a hello slot in a dedicated channel of the TDMA based ad hoc communication network to each of the mobile nodes and announcing the allocation to the mobile nodes through hello slot allocation map, receiving location information from each of the mobile nodes during their hello slot and determining mobile nodes that are inside the predefined region based on the received location information, allocating a data slot to each determined mobile nodes inside the predefined region and announcing the allocation to the mobile nodes through data slot allocation map, and receiving updated location information from each determined mobile nodes during their data slot.

摘要翻译： 公开了一种用于在基于时分多址（TDMA）的自组织通信网络中动态地识别多个移动节点的位置的方法，其中一个或多个移动节点正被移入和移出预定区域。 该方法包括：将基于TDMA的自组织通信网络的专用信道中的一个hello时隙分配给每个移动节点，并且通过hello时隙分配映射通知从移动节点分配给移动节点，在它们的每个移动节点接收每个移动节点的位置信息 基于所接收的位置信息确定位于所述预定区域内的移动节点，并将数据时隙分配给所述预定区域内的每个确定的移动节点，并且通过数据时隙分配映射通知所述移动节点的分配，以及接收更新的位置 来自每个确定的移动节点在其数据时隙期间的信息。

公开(公告)号：US07920586B2

公开(公告)日：2011-04-05

申请号：US11238572

申请日：2005-09-29

申请人： Pertti O. Alapuranen ,  Avinash Joshi

发明人： Pertti O. Alapuranen ,  Avinash Joshi

IPC分类号： H04B7/212 ,  H04L12/413

CPC分类号： H04L45/22 ,  H04L12/5692 ,  H04L45/00 ,  H04L45/302 ,  H04W74/00

摘要： A system and method for transmitting packets in a network (100). A node (102, 106, 107) in the network (100) accesses uses one of a plurality of medium access techniques for transmitting packets on the network (100). The node (102, 106, 107) separates packets to be transmitted into classes based on at least one characteristic of the packets and selects one of the medium access techniques for each class of packets based on whether the medium access technique provides improved transmission efficiency for the at least one characteristic of the packets in the class. The node (102, 106, 107) transmits the packets in each respective class using the respective selected medium access technique.

摘要翻译： 一种用于在网络（100）中传送分组的系统和方法。 网络（100）中的节点（102,106,107）访问使用多个媒体接入技术中的一种来传输网络上的分组（100）。 节点（102,106,107）基于分组的至少一个特性将要发送的分组分离成类，并且基于媒体接入技术是否提供改进的传输效率来为每一类分组选择一种媒体接入技术 该类中的数据包的至少一个特征。 节点（102,106,107）使用相应的所选介质访问技术在每个相应类中发送分组。

公开(公告)号：US07813373B2

公开(公告)日：2010-10-12

申请号：US11420392

申请日：2006-05-25

申请人： Avinash Joshi ,  Manish Shukla

发明人： Avinash Joshi ,  Manish Shukla

IPC分类号： H04L12/43

CPC分类号： H04L1/0006 ,  H04L1/0001 ,  H04L45/302 ,  H04W72/08 ,  H04W84/18

摘要： In a network comprising a source, a destination, and intermediate nodes along a route between the source and the destination, techniques are provided for allocating one or more time slots to transmit a particular data stream along the route based on the QoS requirements to transmit the particular data stream. In one implementation, a Scout Request message (SRM) is sent from the source to the destination to allocate time slots along the route to transmit a particular data stream to the destination. The SRM can include QoS requirements to transmit the particular data stream. Each intermediate node along the route can allocate one or more time slots to transmit the particular data stream based on the QoS requirements needed to transmit the particular data stream along the route.

摘要翻译： 在包括源和目的地之间的路由的源，目的地和中间节点的网络中，提供了用于分配一个或多个时隙以基于QoS要求沿着路由发送特定数据流的技术，以发送 特定数据流。 在一个实现中，Scout请求消息（SRM）从源发送到目的地以沿着路由分配时隙以将特定数据流发送到目的地。 SRM可以包括传输特定数据流的QoS要求。 沿着路由的每个中间节点可以基于沿路由发送特定数据流所需的QoS要求来分配一个或多个时隙以发送特定数据流。

公开(公告)号：US20100157889A1

公开(公告)日：2010-06-24

申请号：US12338053

申请日：2008-12-18

申请人： Pankaj Aggarwal ,  Keith J. Goldberg ,  Avinash Joshi ,  Manish Shukla

发明人： Pankaj Aggarwal ,  Keith J. Goldberg ,  Avinash Joshi ,  Manish Shukla

IPC分类号： H04W40/02

CPC分类号： H04W40/02 ,  H04L45/125 ,  H04L45/16 ,  H04L45/48 ,  H04W40/12 ,  H04W84/12 ,  H04W84/18

摘要： Systems and methods are provided for improving efficiency and reliability of broadcast transmission in a multi-hop wireless mesh communication network. When an intelligent access point (IAP) receives a broadcast packet (BP), the IAP can determine a list of downlink child mesh nodes (DLCMNs) of the IAP based on route information provided in its routing table. After the IAP knows its DLCMNs, the IAP can determine a first lowest data rate (LDR) between the IAP and each of its DLCMNs, and then re-transmit the BP at the first LDR. The BP is then received by at least one “parent” mesh node, which can then perform similar processing, and can then re-transmit the BP to its DLCMNs. This process repeats until the BP reaches a leaf mesh node. In other words, each mesh node can determine its DLCMNs, determine the LDR between itself and each of its DLCMNs, and can then re-transmit the BP at this LDR.

摘要翻译： 提供了用于提高多跳无线网状通信网络中的广播传输的效率和可靠性的系统和方法。 当智能接入点（IAP）接收到广播分组（BP）时，IAP可以基于其路由表中提供的路由信息​​来确定IAP的下行链路子网格节点（DLCMN）的列表。 在IAP知道其DLCMN之后，IAP可以确定IAP与其每个DLCMN之间的第一最低数据速率（LDR），然后在第一LDR处重新发送BP。 然后由至少一个“父”网格节点接收BP，然后可以执行类似的处理，然后可以将BP重新发送到其DLCMN。 该过程重复直到BP到达叶网状节点。 换句话说，每个网格节点可以确定其DLCMN，确定其与其每个DLCMN之间的LDR，然后可以在该LDR处重新发送BP。

公开(公告)号：US20090296612A1

公开(公告)日：2009-12-03

申请号：US12130439

申请日：2008-05-30

申请人： Avinash Joshi ,  Pankaj Aggarwal ,  Manish Shukla

发明人： Avinash Joshi ,  Pankaj Aggarwal ,  Manish Shukla

IPC分类号： H04B7/00

CPC分类号： H04W28/06 ,  H04W28/22

摘要： A dynamic and distributive aggregation method in which a node determines the frame size of an aggregated frame based on or according to a transmission time of one or more of the received frames. This scheme to aggregate frames is based on the average packet size and average transmission time in the neighborhood. The method enables the aggregated packet size to dynamically change based on the neighborhood conditions. Usage of link rates and fair transmission time assignment enables the high data rate nodes to send more traffic but not to an extent of over-utilizing the channel thus achieving higher throughput efficiencies while maintaining fairness within a high data rate multi-hop wireless communication network.

摘要翻译： 一种动态和分布式聚合方法，其中节点基于或根据所接收的一个或多个帧的传输时间来确定聚合帧的帧大小。 这种聚合帧的方案是基于邻域的平均分组大小和平均传输时间。 该方法使聚合的分组大小能够根据邻域条件动态地改变。 链路速率和公平传输时间分配的使用使得高数据速率节点能够发送更多的业务，而不是在一定程度上过度利用信道，从而实现更高的吞吐量效率，同时保持在高数据速率的多跳无线通信网络内的公平性。

公开(公告)号：US07609670B2

公开(公告)日：2009-10-27

申请号：US11238573

申请日：2005-09-29

申请人： Guenael J. Strutt ,  Avinash Joshi

发明人： Guenael J. Strutt ,  Avinash Joshi

IPC分类号： H04W4/00

CPC分类号： H04W99/00

摘要： A system and method for avoiding collisions between packets transmitted in a wireless network (100). A first node (102, 106 or 107) in the wireless network (100) can transmit a packet to a second node (102, 106 or 107) in the wireless network (100), such that packet includes a header that is transmitted with a higher processing gain than the data, therefore, may be received and processed by a third node (102, 106 or 107. This allows the third node (102, 106 or 107) to detect the transmission of a packet by the first node (102, 106 or 107), which can cause the third node (102, 106 or 107) to avoid transmission of a packet during the transmission by the first node (102, 106 or 107) to avoid collision between the packets. The system and method further enables the nodes (102, 106 or 107) to determine whether they can transmit to another node (102, 106 or 107) based on estimates of interference conditions that can be experienced due to the presence of other nodes (102, 106 or 107).

摘要翻译： 一种用于避免在无线网络（100）中发送的分组之间的冲突的系统和方法。 无线网络（100）中的第一节点（102,106或107）可以将分组发送到无线网络（100）中的第二节点（102,106或107），使得分组包括与第 因此，可以由第三节点（102,106或107）接收并处理比数据更高的处理增益。这允许第三节点（102,106或107）检测由第一节点发送的分组的传输（ 102,106或107），其可以导致第三节点（102,106或107）在第一节点（102,106或107）的传输期间避免分组的传输，以避免分组之间的冲突，系统和 基于由于存在其他节点（102,106或107）可能会经历的干扰条件的估计，节点（102,106或107）能够确定它们是否可以发送到另一节点（102,106或107） 107）。