KR20030055342A

5G,4G,3G,2G

Title

Not Available

Application Number:

KR20037007618

Publication Date:

02-07-2003

Current Assignee:

Family ID:

Application Date:

05-06-2003

Declaring Company:

Publication Country:

US

Priority Date:

06-12-2000

Title

Not Available

Application Number:

KR20037007618

Family ID:

Publication Country:

US

Publication Date:

02-07-2003

Application Date:

05-06-2003

Priority Date:

06-12-2000

Current Assignee:

Declaring Company:

Abstract  Abstract

A novel method and apparatus for performing seamless handoff of a mobile station (MS) between radio access networks (RAN) using different types of air interfaces is disclosed. The disclosed embodiment allows the MS to handoff between different RANs without causing routing ambiguity and without substantial loss of network data. When moving from the coverage area of the first RAN using the first air interface to the coverage area of the second RAN using the second air interface, the MS determines whether routing uncertainty is caused by a change in the RAN and based on the determination Triggers re-registration of the network address. The foreign agent (FA) in the packet data service node (PDSN) monitors whether network address re-registration is created for the same MS. Based on this information, the PDSN terminates redundant R-P network connections due to the movement of the MS between different RANs.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.