公开(公告)号：US20040223508A1

公开(公告)日：2004-11-11

申请号：US10869443

申请日：2004-06-16

Applicant: Nortel Networks Limited

Inventor： Wilson Sawyer ,  John M. Ulm

IPC: H04L012/28

CPC classification number: H04L12/2861 ,  H04L12/2856 ,  H04L12/287

Abstract: An apparatus and method of maintaining state information for a network device changing from a first channel (in communication with a first base unit) to a second channel (in communication with a second base unit) communicates with at least one of the first base unit and an intermediate network device to ascertain the state information. Once the state information is ascertained, it is applied to the communication of the network device with the second base unit. Both the first and second base units are independently operable network devices in a data transmission network.