公开(公告)号：US20030215238A1

公开(公告)日：2003-11-20

申请号：US10323680

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：US20030194175A1

公开(公告)日：2003-10-16

申请号：US10390880

申请日：2003-03-19

Applicant: NORTEL NETWORKS LIMITED

Inventor： Maged E. Beshai ,  Alan Frank Graves

IPC: G02B006/28

CPC classification number: H04J14/0227 ,  H04J3/0638 ,  H04J14/0241 ,  H04J14/0284 ,  H04Q11/0005 ,  H04Q2011/0009 ,  H04Q2011/0011 ,  H04Q2011/0015 ,  H04Q2011/0018 ,  H04Q2011/0024 ,  H04Q2011/0032 ,  H04Q2011/0033 ,  H04Q2011/0039 ,  H04Q2011/005 ,  H04Q2011/0052 ,  H04Q2011/0088

Abstract: A fast optical switch is needed to realize an economical and scaleable optical-core network. In the disclosed optical switch, switching is effected by rapid wavelength conversion. Either channel switching, Time Division Multiplex (TDM) switching or both may be provided by the fast optical switch. The operation of the fast optical switch is enabled by a fast scheduler. The throughput of the optical switch may be increased through a process of bimodal pipelined connection-packing. An in-band exchange of control signals with external nodes may serve to minimize the control overhead. Such control signals may include time-locking signals and connection-requests. A modular structure may be configured to comprise several fast optical switches to yield a high-speed, high-capacity, fully-connected optical switch.

公开(公告)号：US20030170029A1

公开(公告)日：2003-09-11

申请号：US10323681

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：US20030169689A1

公开(公告)日：2003-09-11

申请号：US10192113

申请日：2002-07-10

Applicant: Nortel Networks Limited

Inventor： Srikanth Chavali

IPC: H04L012/28 ,  H04L012/56

CPC classification number: H04L45/02 ,  H04L45/04 ,  H04L45/566

Abstract: Communities attributes are inserted into a packet in a predetermined sequence. A receiving device extrapolates policy information from the sequence of communities attributes for making intelligent routing decisions.

Abstract translation: 社区属性按预定的顺序插入到数据包中。 接收设备根据社区属性序列来推断策略信息，从而进行智能路由决策。

公开(公告)号：US20030161299A1

公开(公告)日：2003-08-28

申请号：US10396100

申请日：2003-03-25

Applicant: NORTEL NETWORKS LIMITED

Inventor： Sanjay H. Rao ,  Kenneth W. Oxendine ,  Richard Sigler

IPC: H04L012/66

CPC classification number: H04M7/006 ,  H04Q11/04 ,  H04Q2213/13003 ,  H04Q2213/13096 ,  H04Q2213/13103 ,  H04Q2213/13106 ,  H04Q2213/13164 ,  H04Q2213/13166 ,  H04Q2213/13176 ,  H04Q2213/13196 ,  H04Q2213/13204 ,  H04Q2213/13216 ,  H04Q2213/13292 ,  H04Q2213/13298 ,  H04Q2213/13389

Abstract: Method and apparatus for reducing load distribution delay in an internet protocol switch. A system of messaging allows leader and follower cards within a switch to communicate without spanning the external network and without significant involvement by the central computing module within a switch. When a call setup request is received by a leader card, it sends a broadcast message to follower cards within a multicast group. Each follower card responds with address and channel information which enable the leader card to perform load balancing and establish a connection through the appropriate follower card.

公开(公告)号：US20030152063A1

公开(公告)日：2003-08-14

申请号：US10321481

申请日：2002-12-18

Applicant: NORTEL NETWORKS LIMITED

Inventor： Peter A. Giese ,  Stephane Roch ,  Richard Thomas

IPC: H04J003/24 ,  H04J003/16

CPC classification number: H04W84/12 ,  H04L12/4645 ,  H04L29/06 ,  H04L69/325 ,  H04L69/326 ,  H04W4/06 ,  H04W74/08

Abstract: A radio access network includes a transport network layer; a radio network layer having a layer 2 network for communicating between entities within the radio network layer by exchanging datagrams having a predetermined format used only within the radio network layer. Accordingly, the present invention provides for a true decoupling at layer 2 between the radio network layer and the transport network layer. Addressing at layer 2 can enable both connectionless and connection oriented using an overlay connectivity model. Layer 2 in the radio network layer is implemented as an Ethernet network.

Abstract translation: 无线电接入网络包括传输网络层; 具有层2网络的无线电网络层，用于通过交换具有仅在无线电网络层内使用的预定格式的数据报来在无线电网络层内的实体之间进行通信。 因此，本发明提供了在无线网络层和传输网络层之间的层2的真正解耦。 第2层的寻址可以使用覆盖连接模型实现无连接和面向连接。 无线网络层中的第2层被实现为以太网。

公开(公告)号：US20030142674A1

公开(公告)日：2003-07-31

申请号：US10265621

申请日：2002-10-08

Applicant: NORTEL NETWORKS LIMITED

Inventor： Liam Casey

IPC: H04L012/56

CPC classification number: H04L45/502 ,  H04L12/4633 ,  H04L12/4641

Abstract: A network can be organized for providing virtual private LAN segment (VPLS) services to customers into a network core and an associated number of logical provider edges. Each logical provider edge is partitioned into a plurality of Edge-PEs and a Core-PE. Customers connect to the Edge-PE. The Edge-PE maintains a context (a virtual bridge) for each customer VPLS it serves, VPLS service is realized by a full mesh of so called virtual circuit (VC) tunnels between virtual bridge ports. Each VC tunnel is identified by 3 VC labels in each direction, the first label is used in the encapsulation of customer traffic from the ingress Edge-PE to the ingress Core-PE, the second from ingress Core-PE to egress Core-PE and the third from egress Core-PE to Egress Edge-PE. The mechanisms for the allocation of the label values to and how the label values are used provide a realization of VPLS service that is scalable and easy to administer.

Abstract translation: 可以组织网络以向客户提供虚拟专用LAN段（VPLS）服务到网络核心和相关数量的逻辑提供商边缘。 每个逻辑提供商边缘被分割成多个Edge-PE和Core-PE。 客户连接到Edge-PE。 Edge-PE为其服务的每个客户VPLS维护上下文（虚拟桥），VPLS服务通过虚拟桥端口之间所谓的虚拟电路（VC）隧道的完整网格来实现。 每个VC隧道在每个方向由3个VC标签标识，第一个标签用于封装从入口Edge-PE到入口Core-PE的客户流量，第二个标签用于从入口Core-PE到出口Core-PE的第二个， 从出口Core-PE到出口边缘PE的第三个。 标签值分配的机制以及如何使用标签值提供可扩展且易于管理的VPLS服务的实现。

公开(公告)号：US20030123406A1

公开(公告)日：2003-07-03

申请号：US10034086

申请日：2001-12-28

Applicant: NORTEL NETWORKS LIMITED

Inventor： Mehmet Yavuz ,  David Paranchych ,  Geng Wu

IPC: H04Q007/00

CPC classification number: H04W72/085 ,  H04W52/0245 ,  Y02D70/122 ,  Y02D70/1244

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 selected in accordance with a determined signal-to-noise level, 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，根据确定的信噪比级别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的分组错误率。 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：US20030110440A1

公开(公告)日：2003-06-12

申请号：US10349637

申请日：2003-01-23

Applicant: Nortel Networks Limited

Inventor： Alberto Gutierrez JR.

IPC: H03M013/03

CPC classification number: H04L1/006 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/08 ,  H04L5/1453

Abstract: Disclosed is a method of and apparatus for increasing the capacity of a wireless communication system. This is accomplished by having users that can support a higher than base modulation order be required to do so under predetermined conditions such as electrical distance from a base transceiver station (BTS) antenna to a user, the reception of data in a high speed burst (HSD) and the like. The same digital processor apparatus that may be used to provide a base order modulation scheme may be reprogrammed in a more complex fashion to provide signal processing at the higher modulation rate for any given user channel.

Abstract translation: 公开了一种用于增加无线通信系统的容量的方法和装置。 这是通过在预定条件下（例如从基站收发器（BTS）天线到用户的电距离），以高速脉冲串的数据接收（即， HSD）等。 可以用于提供基本调制方案的相同的数字处理器装置可以以更复杂的方式重新编程，以便为任何给定的用户信道以更高的调制速率提供信号处理。

公开(公告)号：US20030058909A1

公开(公告)日：2003-03-27

申请号：US10196956

申请日：2002-07-18

Applicant: Nortel Networks Limited

Inventor： William Benyon

IPC: H01S005/00 ,  H01L021/66 ,  G01R031/26

CPC classification number: H01S5/0042 ,  H01S5/0201

Abstract: A method and system for fabricating semiconductor lasers includes the determination of a statistical predictive relationship between attribute measurements and mode index values for lasers fabricated according to a design. The predictive relationship predicts a specific mode index value using a specific attribute measurement. The predictive relationship may be applied in a fabrication process for lasers subsequently fabricated according to the design, and an appropriate grating structure providing increased production of lasers that lase at substantially target wavelengths is enabled.

Abstract translation: 用于制造半导体激光器的方法和系统包括确定根据设计制造的激光器的属性测量和模式指标值之间的统计预测关系。 预测关系使用特定属性测量来预测特定模式指标值。 预测关系可以应用于随后根据设计制造的激光器的制造工艺中，并且能够实现提供增加的基本上目标波长的激光器的生产的适当的光栅结构。