公开(公告)号：US20040001462A1

公开(公告)日：2004-01-01

申请号：US10186787

申请日：2002-07-01

Applicant: Nortel Networks Limited

Inventor： Mehmet Yavuz ,  David Paranchych

IPC: H04Q007/00 ,  H04Q007/28

CPC classification number: H04W28/22 ,  H04L1/0002 ,  H04L1/0021 ,  H04L1/0025

Abstract: A method and system applicable within a mobile transmission system for adaptively allocating a downlink data rate to an access terminal to compensate for channel fading. In accordance with the method of the present invention a downlink data rate is selected in accordance with a determined signal-to-noise level and an effective throughput, wherein the downlink data rate is associated with a specified signal-to-noise threshold to achieve a specified packet error rate. Next, a packet is transmitted to an access terminal at the selected downlink data rate. In response to successfully decoding the packet at the access terminal, the signal-to-noise threshold specified for the selected downlink data rate is decreased such that subsequent data rate selections are adaptively maximized. Responsive to a packet decoding error, the signal-to-noise threshold is abruptly increased to maintain the specified packet error rate.

Abstract translation: 一种适用于移动传输系统的方法和系统，用于将下行链路数据速率自适应地分配给接入终端以补偿信道衰落。 根据本发明的方法，根据确定的信噪比水平和有效吞吐量来选择下行链路数据速率，其中下行链路数据速率与指定的信噪比阈值相关联以实现 指定包错误率。 接下来，以所选择的下行链路数据速率将分组发送到接入终端。 响应于在接入终端成功解码分组，减小为所选择的下行链路数据速率指定的信噪比阈值，使得随后的数据速率选择被自适应地最大化。 响应于分组解码错误，信号噪声阈值突然增加以维持指定的分组错误率。

公开(公告)号：US20030219005A1

公开(公告)日：2003-11-27

申请号：US10423285

申请日：2003-04-25

Applicant: NORTEL NETWORKS LIMITED

Inventor： Olivier Isnard ,  Frederic Ratovelomanana ,  Jean-Marie Calmel ,  Robert W. Dijkerman ,  Shedman Tam ,  Quanying Peng ,  Jian G. Zhao

IPC: H04J003/06

CPC classification number: H04W56/002 ,  H04B7/2678 ,  H04W92/10

Abstract: Each radio station (2) has a receiving window associated with each frame, positioned according to a time marker inserted in the said frame by a control unit (1). The frames include data frames (5), in which the time marker is inserted for synchronization with a radio terminal (4), and signalling frames. Each radio station indicates a data frame received outside the associated receiving window, and responds to a signalling frame by returning to the control unit a synchronization parameter representing a time of arrival of the said signalling frame. In a period of transmission of successive data frames: signalling frames are transmitted to each radio station simultaneously; returned synchronization parameters are processed; and times of transmission of successive data frames are controlled according to the processed parameters.

Abstract translation: 每个无线电站（2）具有与每个帧相关联的接收窗口，其根据由控制单元（1）插入在所述帧中的时间标记来定位。 帧包括数据帧（5），其中插入时间标记以与无线电终端（4）同步，以及信令帧。 每个无线电站指示在相关联的接收窗口之外接收到的数据帧，并且通过向控制单元返回表示所述信令帧的到达时间的同步参数来响应信令帧。 在连续数据帧的发送期间：信令帧同时发送到每个无线电台; 返回的同步参数被处理; 并根据处理的参数控制连续数据帧的传输次数。

公开(公告)号：US20030211828A1

公开(公告)日：2003-11-13

申请号：US10086581

申请日：2002-02-28

Applicant: Nortel Networks Limited

Inventor： Robert Dalgleish ,  Mazin Al-Shalash

IPC: H04B007/15 ,  H04J003/08

CPC classification number: H04W52/362 ,  H04B7/15535 ,  H04B7/2606 ,  H04W52/10 ,  H04W52/16 ,  H04W52/24 ,  H04W52/34 ,  H04W52/367 ,  H04W52/52

Abstract: Provided is a system and method for a self-configuring repeater in a telecommunications network. The repeater receives data from a base transceiver station (BTS) via a downlink channel and sends data to the BTS via an uplink channel. The repeater compares the power level of a downlink signal (such as a pilot signal) to a reference power level. If the downlink signal's power level does not fall within a predetermined range relative to the reference power level, a comparator inside the repeater adjusts the received signal's power level by altering a gain of a downlink amplifier chain until the downlink signal's power level falls within the predetermined range. The comparator then applies the same gain to an uplink amplifier chain. In this way, the pilot signal's power level can be utilized to control the uplink noise level at the BTS.

Abstract translation: 提供了一种用于电信网络中的自配置中继器的系统和方法。 中继器经由下行链路信道从基站收发台（BTS）接收数据，经由上行链路信道向BTS发送数据。 中继器将下行链路信号（例如导频信号）的功率电平与参考功率电平进行比较。 如果下行链路信号的功率电平没有落在相对于参考功率电平的预定范围内，则中继器内的比较器通过改变下行链路放大器链的增益来调整接收信号的功率电平，直到下行链路信号的功率电平落入预定的 范围。 比较器然后将相同的增益应用于上行链路放大器链。 以这种方式，可以利用导频信号的功率电平来控制BTS处的上行链路噪声电平。

公开(公告)号：US20030189947A1

公开(公告)日：2003-10-09

申请号：US10414199

申请日：2003-04-16

Applicant: NORTEL NETWORKS LIMITED

Inventor： Maged E. Beshai

IPC: H04L012/54

CPC classification number: H04L47/15 ,  H04L47/10 ,  H04L47/263 ,  H04L47/29 ,  H04L47/50 ,  H04L47/522 ,  H04L47/6215 ,  H04L47/627 ,  H04L47/70 ,  H04L47/724 ,  H04L47/762 ,  H04L47/801 ,  H04L47/805 ,  H04L47/821 ,  H04L47/822 ,  H04L47/829 ,  H04L49/205 ,  H04L49/254 ,  H04L49/3027 ,  H04L49/505

Abstract: A method and a network for a universal transfer mode (UTM) of transferring data packets at a regulated bit rate are disclosed. The method defines a protocol that uses an adaptive packet header to simplify packet routing and increase transfer speed. The protocol supports a plurality of data formats, such as PCM voice data, IP packets, ATM cells, frame relay and the like. The network preferably includes a plurality of modules that provide interfaces to various data sources. The modules are interconnected by an optic core with adequate inter-module links with preferably no more than two hops being required between any origination/destination pair of modules. The adaptive packet header is used for both signaling and payload transfer. The header is parsed using an algorithm to determine its function. Rate regulation is accomplished using each module control element and egress port controllers to regulate packet transfer. The protocol enables the modules to behave as a single distributed switch capable of multi-terabit transfer rates. The advantage is a high speed distributed switch capable of serving as a transfer backbone for substantially any telecommunications service.

公开(公告)号：US20030170026A1

公开(公告)日：2003-09-11

申请号：US10323679

申请日：2002-12-20

Applicant: Nortel Networks Limited

Inventor： David Milton ,  Tomas Valis ,  Gino Totti ,  Kexing Liu ,  Michel Pigeon

IPC: H04J014/02

CPC classification number: H04J14/0291 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0289 ,  H04J14/0298 ,  H04Q11/0062

Abstract: A communications network has a plurality of nodes interconnected by an optical transmission medium. The transmission medium is capable of a carrying a plurality of wavelengths organized into bands. A filter at each node for drops a band associated therewith and passively forwards other bands through the transmission medium. A device is provided at each node for adding a band to the transmission medium. Communication can be established directly between a pair of nodes in the network sharing a common band without the active intervention of any intervening node. This allows the network to be protocol independent. Also, the low losses incurred by the passive filters permit relatively long path lengths without optical amplification.

公开(公告)号：US20030161635A1

公开(公告)日：2003-08-28

申请号：US10323682

申请日：2002-12-20

Applicant: Nortel Networks Limited

Inventor： David Milton ,  Tomas Valis ,  Gino Totti ,  Kexing Liu ,  Michel Pigeon

IPC: H04J014/02 ,  H04B010/08

CPC classification number: H04J14/0291 ,  H04J14/0206 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/028 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0289 ,  H04J14/0298 ,  H04Q11/0062

Abstract: A communications network has a plurality of nodes interconnected by an optical transmission medium. The transmission medium is capable of a carrying a plurality of wavelengths organized into bands. A filter at each node for drops a band associated therewith and passively forwards other bands through the transmission medium. A device is provided at each node for adding a band to the transmission medium. Communication can be established directly between a pair of nodes in the network sharing a common band without the active intervention of any intervening node. This allows the network to be protocol independent. Also, the low losses incurred by the passive filters permit relatively long path lengths without optical amplification.

公开(公告)号：US20030161304A1

公开(公告)日：2003-08-28

申请号：US10084201

申请日：2002-02-28

Applicant: NORTEL NETWORKS LIMITED

Inventor： Evert E. deBoer ,  James A. Shields ,  Rick R. Wedge ,  Peter J. Ashwood-Smith

IPC: H04L012/50

CPC classification number: H04L45/28 ,  H04L45/00 ,  H04L45/22 ,  H04L45/50

Abstract: In a mesh communications network, in which working and protection paths may be established, channels used to carry protection traffic between nodes are shared across multiple protection paths. Channels need only be shared if sharing does not adversely impact network usage. If working and protection paths become susceptible to single points of failure, channels need not be shared.

Abstract translation: 在可以建立工作和保护路径的网状通信网络中，用于在节点之间传送保护业务的信道在多个保护路径之间共享。 仅当共享不会对网络使用造成不利影响时，才需要共享频道。 如果工作和保护路径容易受到单点故障的影响，则不需要共享通道。

公开(公告)号：US20030142390A1

公开(公告)日：2003-07-31

申请号：US10058879

申请日：2002-01-28

Applicant: Nortel Networks Limited

Inventor： Simon P. Parry ,  Eric S. Maniloff ,  Gary Mak ,  Andy Rowland ,  Franz L.H. Mok

IPC: H01S003/00

CPC classification number: H01S3/13 ,  H01S3/1305 ,  H01S3/131 ,  H01S5/0683 ,  H01S5/50

Abstract: In a method and apparatus for tracking dynamic characteristics of an optical amplifier, optical signal probes are used to determine the gain and the corner frequency of the optical amplifier. A first optical probe having a predetermined modulation frequency above an expected corner frequency of the amplifier is used to estimate the gain of the optical amplifier. A second optical probe signal having a second predetermined modulation frequency at or below the expected corner frequency of the amplifier is used to estimate the corner frequency. These parameters can be used to optimize gain control of an optical amplifier.

Abstract translation: 在用于跟踪光放大器的动态特性的方法和装置中，光信号探针用于确定光放大器的增益和转角频率。 使用具有高于放大器的预期转角频率的预定调制频率的第一光学探头来估计光放大器的增益。 使用具有等于或低于放大器的预期转角频率的第二预定调制频率的第二光学探测信号来估计转角频率。 这些参数可用于优化光放大器的增益控制。

公开(公告)号：US20030117962A1

公开(公告)日：2003-06-26

申请号：US10036921

申请日：2001-12-21

Applicant: Nortel Networks Limited

Inventor： James R. Mattson ,  Dino B. Fatica ,  LeRoy A. Pick ,  Jose K. Kokkat ,  Timothy P. Munro

IPC: H04L001/00

CPC classification number: H04L41/12 ,  H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0086 ,  H04Q2011/0088

Abstract: An automated method of detecting, and provisioning connections between interconnected nodes in a consolidated network element involves sending messages between the nodes. The messages are inserted into data frames sent from respective transmit ports through inter-node links, to respective receive ports. The messages contain information used to provision the receive ports at which they are received, and information for identifying equipment that generated, transmitted, and conveyed the message, respectively, so that the connectivity of the interconnected nodes can be verified.

Abstract translation: 在统一网络单元中的互连节点之间检测和供应连接的自动化方法涉及在节点之间发送消息。 消息被插入到通过节点间链路从相应发送端口发送到相应接收端口的数据帧中。 消息包含用于设置接收端的接收端口的信息，以及用于识别分别生成，传输和传送消息的设备的信息，以便可以验证互连节点的连通性。

公开(公告)号：US20030107450A1

公开(公告)日：2003-06-12

申请号：US10012478

申请日：2001-12-12

Applicant: Nortel Networks Limited

Inventor： Riyaz S. Jamal ,  Gilbert P. Brunette ,  Simon H.C. Tsang

IPC: H03H005/00

CPC classification number: H03F1/56 ,  H03H7/38

Abstract: A receiving circuit having a termination impedance and an equalization capacitor. The receiving circuit is connectable to a signal source having a source impedance through a DC (direct current) blocking capacitor. The value of the equalization capacitor is chosen such that voltage spikes otherwise caused by the blocking capacitor are eliminated. The receiving circuit is especially useful in distributed electronic amplifiers and electro-optic modulators.

Abstract translation: 具有端接阻抗的接收电路和均衡电容器。 接收电路可通过DC（直流）阻塞电容器连接到具有源极阻抗的信号源。 选择均衡电容器的值，使得消除由阻塞电容器引起的电压尖峰。 接收电路在分布式电子放大器和电光调制器中特别有用。