公开(公告)号：US20140122742A1

公开(公告)日：2014-05-01

申请号：US13981080

申请日：2012-11-19

Applicant: New Jersey Institute of Technology

Inventor： Roberto Rojas-Cessa ,  Khondaker M. Salehin

IPC: G06F1/14

CPC classification number: G06F1/14 ,  H04J3/0658 ,  H04L43/0858 ,  H04L43/10

Abstract: Technologies are generally described for measuring clock skew between two remote hosts connected through a computer network. According to some examples, pairs of probe packets, also referred to as a compound probe, may be transmitted over an end-to-end path in both directions (forward and reverse paths) to measure a gap value at the end nodes for clock skew estimation. Compound probes may arrive at the end nodes with a zero dispersion gap (no separation) and the gap values along the forward and reverse paths may be determined by a capacity of the links connected to the end nodes added to the clock speeds of the measuring nodes upon arriving at the end nodes. The link capacity is a constant network parameter. Thus, the ratio of the measured gap values may provide an estimate of clock speed discrepancy between the end nodes.

Abstract translation: 通常描述技术来测量通过计算机网络连接的两个远程主机之间的时钟偏差。 根据一些示例，也可以在两个方向（正向和反向路径）上的端到端路径上传送也称为复合探测器的探测分组对，以测量终端节点处的时间偏移的间隙值 估计。 复合探测器可以以零色散间隙（没有间隔）到达端节点，并且沿正向和反向路径的间隙值可以由连接到添加到测量节点的时钟速度的端节点的链路的容量来确定 到达终端节点。 链路容量是一个恒定的网络参数。 因此，测量的间隙值的比率可以提供端节点之间的时钟速度差异的估计。

公开(公告)号：US09501093B2

公开(公告)日：2016-11-22

申请号：US13981080

申请日：2012-11-19

Applicant: New Jersey Institute of Technology

Inventor： Roberto Rojas-Cessa ,  Khondaker M. Salehin

IPC: G06F15/16 ,  H04J3/06 ,  H04J3/07 ,  G06F1/14 ,  H04L12/26

CPC classification number: G06F1/14 ,  H04J3/0658 ,  H04L43/0858 ,  H04L43/10

Abstract: Technologies are generally described for measuring clock skew between two remote hosts connected through a computer network. According to some examples, pairs of probe packets, also referred to as a compound probe, may be transmitted over an end-to-end path in both directions (forward and reverse paths) to measure a gap value at the end nodes for clock skew estimation. Compound probes may arrive at the end nodes with a zero dispersion gap (no separation) and the gap values along the forward and reverse paths may be determined by a capacity of the links connected to the end nodes added to the clock speeds of the measuring nodes upon arriving at the end nodes. The link capacity is a constant network parameter. Thus, the ratio of the measured gap values may provide an estimate of clock speed discrepancy between the end nodes.

Abstract translation: 通常描述技术来测量通过计算机网络连接的两个远程主机之间的时钟偏差。 根据一些示例，也可以在两个方向（正向和反向路径）上的端到端路径上传送也称为复合探测器的探测分组对，以测量终端节点处的时间偏移的间隙值 估计。 复合探测器可以以零色散间隙（没有间隔）到达端节点，并且沿正向和反向路径的间隙值可以由连接到添加到测量节点的时钟速度的端节点的链路的容量来确定 到达终端节点。 链路容量是一个恒定的网络参数。 因此，测量的间隙值的比率可以提供端节点之间的时钟速度差异的估计。

公开(公告)号：US09100322B2

公开(公告)日：2015-08-04

申请号：US14166802

申请日：2014-01-28

Applicant: New Jersey Institute of Technology

Inventor： Roberto Rojas-Cessa ,  Ziqian Dong

IPC: H04L12/28 ,  H04L12/933 ,  H04L12/50 ,  H04Q11/00

CPC classification number: H04L49/1515

Abstract: Examples are disclosed for forwarding cells of partitioned data through a three-stage memory-memory-memory (MMM) input-queued Clos-network (IQC) packet switch. In some examples, each module of the three-stage MMM IQC packet switch includes a virtual queue and a manager that are configured in cooperation with one another to forward a cell from among cells of partitioned data through at least a portion of the switch. The cells of partitioned data may have been partitioned and stored at an input port for the switch and have a destination of an output port for the switch.

Abstract translation: 公开了用于通过三级存储器 - 存储器（MMM）输入排队的Clos-network（IQC）分组交换机转发分区数据的小区的示例。 在一些示例中，三级MMM IQC分组交换机的每个模块包括虚拟队列和管理器，所述虚拟队列和管理器彼此协作配置，以通过交换机的至少一部分从分区数据的小区之间转发小区。 分区数据的单元可能已被分区并存储在交换机的输入端口，并具有用于交换机的输出端口的目的地。

公开(公告)号：US20140119215A1

公开(公告)日：2014-05-01

申请号：US13882687

申请日：2012-10-30

Applicant: New JErsey Institute of Technology

Inventor： Roberto Rojas-Cessa ,  Khondaker M. Salehin

IPC: H04L12/26

CPC classification number: H04L43/0852 ,  H04L43/10 ,  H04L43/106

Abstract: Technologies are generally described for measuring packet processing time of a remotely connected host device. According to some examples, link capacity may be measured to estimate the packet processing time (PPT). The capacity of the link connected to a host may be measured through active probing with the hosts time-stamping each probing packet after receiving it. Thus, PPT information may be included in the packet receiving process and the processes that the packet undergoes defined by the nature of different computing applications, time-stamping a packet is an example of a process that involves processing time.

Abstract translation: 通常描述了用于测量远程连接的主机设备的分组处理时间的技术。 根据一些示例，可以测量链路容量以估计分组处理时间（PPT）。 连接到主机的链路的容量可以通过主动探测来测量，主机在接收到每个探测分组后对其进行时间戳。 因此，PPT信息可以包括在分组接收处理中，并且分组经历的处理由不同计算应用的性质定义，时间戳分组是涉及处理时间的过程的示例。

公开(公告)号：US20140293819A1

公开(公告)日：2014-10-02

申请号：US14349313

申请日：2013-08-20

Applicant: New Jersey Institute of Technology

Inventor： Roberto Rojas-Cessa ,  Khondaker M. Salehin

IPC: H04W24/06

CPC classification number: H04W24/06 ,  H04L43/0888 ,  H04L43/10 ,  H04W24/08

Abstract: Technologies are generally described to determine a download throughput of a wireless connection in an environment hosting multiple wired and wireless connections. According to some examples, a compound probe may be transmitted from a source to a wireless destination. Another compound probe may also be transmitted from the source to the wireless destination. The compound probes may include multiple packets without any dispersion gap. Next, an average intra-packet gap (AIPG) and a minimum intra-packet gap (MIPG) may be determined from the first compound probe. Furthermore, another MIPG may be determined from the later compound probe. The download throughput from the source to the wireless destination may be computed from the AIPG and the MIPGs.

Abstract translation: 通常描述技术来确定在承载多个有线和无线连接的环境中的无线连接的下载吞吐量。 根据一些示例，可以将复合探测器从源传输到无线目的地。 另一个复合探测器也可以从源传输到无线目的地。 复合探针可以包括多个分组，没有任何分散间隙。 接下来，可以从第一复合探测器确定平均分组间间隙（AIPG）和最小分组间间隙（MIPG）。 此外，另外的MIPG可以从后期的化合物探针中确定。 可以从AIPG和MIPG计算从源到无线目的地的下载吞吐量。

公开(公告)号：US11252630B2

公开(公告)日：2022-02-15

申请号：US16488233

申请日：2017-05-17

Applicant: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD. ,  NEW JERSEY INSTITUTE OF TECHNOLOGY

Inventor： Jianghua Feng ,  Mina Taheri ,  Qiang Fan ,  Nirwan Ansari ,  Roberto Rojas-Cessa ,  Mengchu Zhou ,  Gaohua Chen ,  Dajun Wang ,  Jun Tang ,  Tairan Zhang

IPC: H04W36/32 ,  H04L29/08

Abstract: A method and a system for rail transit communication. The method includes: selecting a second target FSO transceiver from the FSO transceivers that are currently located within a signal coverage of a target FSO base station, in response to detecting that a first target free-space-optics (FSO) transceiver moves out of the signal coverage of the target FSO base station when data communication between the target FSO base station and the target user terminal is performed via the first target FSO transceiver, where the target FSO base station is one of the FSO base stations located on the rail; and maintaining the data communication between the target FSO base station and the target user terminal, by using the second target FSO transceiver. Handover among the base stations is reduced for user equipment, data communication rate is increased, and communication experience of passengers can be improved.

公开(公告)号：US20200033903A1

公开(公告)日：2020-01-30

申请号：US16526525

申请日：2019-07-30

Applicant: New Jersey Institute of Technology

Inventor： Roberto Rojas-Cessa ,  Haim Grebel ,  Zhengqi Jiang

IPC: G05F1/66 ,  H02M1/08 ,  H02M3/335 ,  H02M5/22

Abstract: Energy packet switches (EPS) employing supercapacitors as storage provide aggregation and delivery of energy to users based on shared-capacitance in a digital power grid. The EPS aggregates energy from one or multiple energy sources, stores and dispatches the energy in discrete amounts as energy packets to one or multiple users. The payload of the energy packet is adjusted by the voltages of the supercapacitors which are used as energy containers for both the EPS and the users. The EPS has a control plane where data transmitted is used to control the operation of the EPS, and a power plane to receive and transmit energy between ports. The power and data planes work in parallel and with a parallel data network. Control and management of the EPS are based on a request-grant transport protocol. The data network is used to receive energy requests and grants, and a granting scheme is used to select which loads are granted energy. By sending addresses of granted loads on the data network and energy on the energy grid, energy is delivered to addressed destinations.

公开(公告)号：US20170126012A1

公开(公告)日：2017-05-04

申请号：US15402093

申请日：2017-01-09

Applicant: NEW JERSEY INSTITUTE OF TECHNOLOGY

Inventor： Haim Grebel ,  Roberto Rojas-Cessa

IPC: H02J3/46 ,  H02J3/00 ,  H02J3/38

CPC classification number: H02J3/46 ,  H02J3/005 ,  H02J3/008 ,  H02J3/381 ,  Y04S50/10

Abstract: Methods and apparatus for packetized energy distribution are provided. A data and power delivery network, called a digital grid, is provided to facilitate delivery of power upon request. Energy bits (quanta) serve as a means to deliver energy as well as coding. Voltage pulses of varying time scales are used for coding and current levels help to accurately meet customer's demand. Energy is sent as packets (a combination of energy bits), and specific energy packets are addressed to specific customers permitting accurate monitoring and distribution of electrical energy.

公开(公告)号：US20240154698A1

公开(公告)日：2024-05-09

申请号：US18383244

申请日：2023-10-24

Applicant: New Jersey Institute of Technology

Inventor： Roberto Rojas-Cessa ,  Paa Kwesi Esubonteng

IPC: H04B10/118 ,  H04B10/29 ,  H04B10/50

CPC classification number: H04B10/118 ,  H04B10/29 ,  H04B10/503

Abstract: Disclosed is a drone-assisted and non-drone assisted NLoS-FSOC network and method for high-speed communications in disaster-struck areas or where there is little or no communications. NLoS-FSOC uses a diffuse reflector that is in LoS of a transmitter and receiver for establishing a broadcast optical channel. NLoS-FSOC establishes uplink and downlink transmissions. The present disclosure services at least 130% more stations and provides at least 100% more aggregated downlink data rates than drone-assisted than RF-based schemes. It also consumes 116 times less energy compared to RF-based schemes by using high-bandwidth optical signals and coherent light of laser light in NLoS-FSOC, optical broadcast channel use, and drone or non-drone front-haul diffuse reflection placement. The present disclosure is used autonomously or in combination with other systems such as RF schemes for a more robust solution to RF schemes alone.

公开(公告)号：US11016516B2

公开(公告)日：2021-05-25

申请号：US16526525

申请日：2019-07-30

Applicant: New Jersey Institute of Technology

Inventor： Roberto Rojas-Cessa ,  Haim Grebel ,  Zhengqi Jiang

IPC: G05F1/66 ,  H02M5/22 ,  H02M3/335 ,  H02M1/08

Abstract: Energy packet switches (EPS) employing supercapacitors as storage provide aggregation and delivery of energy to users based on shared-capacitance in a digital power grid. The EPS aggregates energy from one or multiple energy sources, stores and dispatches the energy in discrete amounts as energy packets to one or multiple users. The payload of the energy packet is adjusted by the voltages of the supercapacitors which are used as energy containers for both the EPS and the users. The EPS has a control plane where data transmitted is used to control the operation of the EPS, and a power plane to receive and transmit energy between ports. The power and data planes work in parallel and with a parallel data network. Control and management of the EPS are based on a request-grant transport protocol. The data network is used to receive energy requests and grants, and a granting scheme is used to select which loads are granted energy. By sending addresses of granted loads on the data network and energy on the energy grid, energy is delivered to addressed destinations.