公开(公告)号：US20060281476A1

公开(公告)日：2006-12-14

申请号：US11184735

申请日：2005-07-18

申请人： Frank Lane ,  Rajiv Larola ,  Junyi Li

发明人： Frank Lane ,  Rajiv Larola ,  Junyi Li

IPC分类号： H04B7/00 ,  H04B1/00

CPC分类号： H04L27/2655 ,  H04B7/185 ,  H04B7/2125 ,  H04L5/0007 ,  H04L5/0051 ,  H04L27/261 ,  H04L27/2662 ,  H04W48/12 ,  H04W56/0005 ,  H04W74/04 ,  H04W84/06 ,  H04W88/08

摘要： A wireless terminal using OFDM signaling supporting both terrestrial and satellite base station connectivity operates using conventional access probe signaling in a first mode of operation to establish a timing synchronized wireless link with a terrestrial base station. In a second mode of operation, used to establish a timing synchronized wireless link with a satellite base station, a slightly modified access protocol is employed. The round trip signaling time and timing ambiguity between a wireless terminal and a satellite base station is substantially greater than with a terrestrial base station. The modified access protocol uses coding of access probe signals to uniquely identify a superslot index within a beaconslot. The modified protocol uses multiple access probes with different timing offsets to further resolve timing ambiguity and allows the satellite base station access monitoring interval to remain small in duration. Terrestrial base station location/connection information is used to estimate initial timing.

公开(公告)号：US20090017851A1

公开(公告)日：2009-01-15

申请号：US11775186

申请日：2007-07-09

申请人： Junyi Li ,  Rajiv Larola ,  Xinzhou Wu

发明人： Junyi Li ,  Rajiv Larola ,  Xinzhou Wu

IPC分类号： H04B7/00

CPC分类号： H04W56/002 ,  H04J3/1605

摘要： In an ad hoc peer-to-peer communications network, timing synchronization is facilitated between two or more nodes. A node can establish an original symbol timing and receive a first timing synchronization symbol from a peer node. A timing adjustment can be calculated based in part on the first timing synchronization symbol. An adjusted symbol timing can be established by adjusting the first symbol timing by the calculated timing adjustment amount. The adjusted symbol timing can be conveyed to one or more peer nodes, in order to facilitate timing synchronization among the nodes.

摘要翻译： 在特定的对等通信网络中，在两个或多个节点之间促进定时同步。 节点可以建立原始符号定时并从对等节点接收第一定时同步符号。 可以部分地基于第一定时同步符号来计算定时调整。 可以通过将计算出的定时调整量调整第一符号定时来建立经调整的符号定时。 可以将经调整的符号定时传送到一个或多个对等节点，以便于节点之间的定时同步。

公开(公告)号：US07983702B2

公开(公告)日：2011-07-19

申请号：US11775186

申请日：2007-07-09

申请人： Junyi Li ,  Rajiv Larola ,  Xinzhou Wu

发明人： Junyi Li ,  Rajiv Larola ,  Xinzhou Wu

IPC分类号： H04B7/00 ,  H04J3/06 ,  H04L12/28 ,  H04L12/56 ,  H04J3/16 ,  H04J3/22 ,  H04H20/71 ,  G01R31/08 ,  G06F11/00 ,  G08C15/00 ,  H04J1/16 ,  H04J3/14 ,  H04L1/00 ,  H04L12/26 ,  H04L12/16 ,  H04Q11/00

CPC分类号： H04W56/002 ,  H04J3/1605

摘要： In an ad hoc peer-to-peer communications network, timing synchronization is facilitated between two or more nodes. A node can establish an original symbol timing and receive a first timing synchronization symbol from a peer node. A timing adjustment can be calculated based in part on the first timing synchronization symbol. An adjusted symbol timing can be established by adjusting the first symbol timing by the calculated timing adjustment amount. The adjusted symbol timing can be conveyed to one or more peer nodes, in order to facilitate timing synchronization among the nodes.

摘要翻译： 在特定的对等通信网络中，在两个或多个节点之间促进定时同步。 节点可以建立原始符号定时并从对等节点接收第一定时同步符号。 可以部分地基于第一定时同步符号来计算定时调整。 可以通过将计算出的定时调整量调整第一符号定时来建立经调整的符号定时。 可以将经调整的符号定时传送到一个或多个对等节点，以便于节点之间的定时同步。

公开(公告)号：US08526461B2

公开(公告)日：2013-09-03

申请号：US12268208

申请日：2008-11-10

申请人： Xinzhou Wu ,  Junyi Li ,  Sanjay Shakkottai ,  Rajiv Larola ,  Saurabh Tavildar ,  Thomas Richardson ,  Jay Kumar Sundararajan

发明人： Xinzhou Wu ,  Junyi Li ,  Sanjay Shakkottai ,  Rajiv Larola ,  Saurabh Tavildar ,  Thomas Richardson ,  Jay Kumar Sundararajan

IPC分类号： H04L12/413

CPC分类号： H04W72/1231

摘要： Methods and apparatus relating to scheduling of air link resources, e.g., traffic segments, in a wireless communications system are described. Various described methods and apparatus are well suited to wireless peer to peer networks in which traffic scheduling is decentralized, e.g. an ad hoc peer to peer network. An individual wireless terminal corresponding to a peer to peer connection which desires to transmit traffic signals make transmitter yielding decisions on a traffic slot by traffic slot basis. The transmitter yielding decision, in some embodiments, includes comparing a link quality estimate corresponding to a higher priority link intending to use the same traffic segment concurrently, to a dynamically generated transmitter yielding threshold. The dynamically generated transmitter yielding threshold is determined based on at least one of: quality of service information corresponding to its own link and historical link quality information corresponding to the higher priority link.

摘要翻译： 描述与无线通信系统中的空中链路资源（例如业务段）的调度有关的方法和装置。 各种描述的方法和装置非常适合于其中业务调度被分散的无线对等网络，例如， 一个特别的对等网络。 对应于对等连接的单个无线终端，其期望发送业务信号使得业务时隙上的业务时隙基础上的发射机能够做出决定。 在一些实施例中，发射机产生决定包括将对应于意图将同一业务段使用相同业务段的较高优先级链路的链路质量估计与动态生成的发射机产生阈值相比较。 基于与其自身链路相对应的服务质量信息和对应于较高优先级链路的历史链路质量信息中的至少一个来确定动态生成的发射机产生阈值。

公开(公告)号：US07574224B2

公开(公告)日：2009-08-11

申请号：US11184735

申请日：2005-07-18

申请人： Frank A. Lane ,  Rajiv Larola ,  Junyi Li

发明人： Frank A. Lane ,  Rajiv Larola ,  Junyi Li

IPC分类号： H04B7/00

CPC分类号： H04L27/2655 ,  H04B7/185 ,  H04B7/2125 ,  H04L5/0007 ,  H04L5/0051 ,  H04L27/261 ,  H04L27/2662 ,  H04W48/12 ,  H04W56/0005 ,  H04W74/04 ,  H04W84/06 ,  H04W88/08

摘要： A wireless terminal using OFDM signaling supporting both terrestrial and satellite base station connectivity operates using conventional access probe signaling in a first mode of operation to establish a timing synchronized wireless link with a terrestrial base station. In a second mode of operation, used to establish a timing synchronized wireless link with a satellite base station, a slightly modified access protocol is employed. The round trip signaling time and timing ambiguity between a wireless terminal and a satellite base station is substantially greater than with a terrestrial base station. The modified access protocol uses coding of access probe signals to uniquely identify a superslot index within a beaconslot. The modified protocol uses multiple access probes with different timing offsets to further resolve timing ambiguity and allows the satellite base station access monitoring interval to remain small in duration. Terrestrial base station location/connection information is used to estimate initial timing.

摘要翻译： 使用支持地面和卫星基站连接的OFDM信令的无线终端使用第一操作模式中的常规接入探测信令来操作，以与地面基站建立定时同步的无线链路。 在用于与卫星基站建立定时同步的无线链路的第二种操作模式中，采用稍微修改的接入协议。 无线终端和卫星基站之间的往返信令时间和定时模糊度远远大于地面基站。 经修改的接入协议使用接入探测信号的编码来唯一地标识信标内的超频索引。 经修改的协议使用具有不同定时偏移的多个接入探测器来进一步解决定时模糊度，并允许卫星基站接入监视间隔在持续时间内保持较小。 地面基站位置/连接信息用于估计初始定时。