公开(公告)号：DE602005012886D1

公开(公告)日：2009-04-09

申请号：DE602005012886

申请日：2005-03-15

Applicant: LUCENT TECHNOLOGIES INC

Inventor： CHAN MUN-CHOON ,  HAVEMANN MARTIN ,  RAMJEE RAMACHANDRAN ,  THUEL SANDRA R ,  WOO THOMAS Y

IPC: G06F9/50 ,  H04W88/08 ,  H04J13/00

Abstract: A base station controller (BSC) of a radio or wireless telecommunications network base station includes a director. A BSC includes multiple central processing units (CPUs), with each CPU running a call-processing application for one or more connections. The director is a logical entity that intercepts wireless call-setup signaling and assigns each corresponding connection to a CPU according to a centralized load-balancing algorithm. The centralized load-balancing algorithm distributes connections to less loaded CPUs to i) prevent individual CPUs from overloading, ii) utilize otherwise unused system resources, and iii) increase overall system performance. The director hosts cell components that manage code division multiple access (CDMA) downlink spreading codes for a base station, providing centralized allocation of spreading codes by the base station.

公开(公告)号：DE602005018431D1

公开(公告)日：2010-02-04

申请号：DE602005018431

申请日：2005-10-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FURQUAN AHMED ANSARI ,  HAVEMANN MARTIN ,  LAKSHMAN TIRUNELL V ,  NANDAGOPAL THYAGARAJAN ,  RAMJEE RAMACHANDRAN ,  WOO THOMAS Y

IPC: H04L12/56

Abstract: A SoftRouter architecture deconstructs routers by separating the control entities of a router from its forwarding components, enabling dynamic binding between them. In the SoftRouter architecture, control plane functions are aggregated and implemented on a few smart servers which control forwarding elements that are multiple network hops away. A dynamic binding protocol performs network-wide control plane failovers. Network stability is improved by aggregating and remotely hosting routing protocols, such as OSPF and BGP. This results in faster convergence, lower protocol messages processed, and fewer route changes following a failure. The SoftRouter architecture includes a few smart control entities 402, 404 that manage a large number of forwarding elements 406 to provide greater support for network-wide control. In the SoftRouter architecture, routing protocols operate remotely at a control element and control one or more forwarding elements by downloading the forwarding tables, etc. into the forwarding elements. Intra-domain routing and inter-domain routing are also included.