CN1320843C

5G,4G,3G,2G

Title

Method and apparatus for handoff of wireless packet data service connection

Application Number:

CN2001821959

Publication Date:

06-06-2007

Current Assignee:

Family ID:

Application Date:

04-12-2001

Declaring Company:

Publication Country:

US

Priority Date:

06-12-2000

Title

Method and apparatus for handoff of wireless packet data service connection

Application Number:

CN2001821959

Family ID:

Publication Country:

US

Publication Date:

06-06-2007

Application Date:

04-12-2001

Priority Date:

06-12-2000

Current Assignee:

Declaring Company:

Abstract  Abstract

The invention claims a new method and device between different types of wireless interface of the radio access network (RAN) to perform seamless handoff of a mobile station (MS). The described embodiments the MS can switch between different RAN without causing routing ambiguity and without substantial loss of network data. re-registration from the coverage area of a first RAN of the first wireless interface to the coverage area of a second RAN of second wireless interface an MS determines whether routing ambiguity produced from the change of RAN and trigger the network address according to the determination. a packet data serving node (PDSN) of the foreign agent (FA) monitors network address creating a re-registration for the same MS. redundant R-P network according to the decision the PDSN stop to move between different RAN generated from the MS.

A novel method and apparatus is disclosed for performing seamless handoff of a mobile station (MS) between Radio Access Networks (RANs) that use different types of wireless interfaces. The described embodiments enable an MS to handoff between different RANs without causing routing ambiguity and without substantial loss of network data. Upon moving from the coverage area of a first RAN using a first wireless interface to the coverage area of a second RAN using a second wireless interface an MS determines whether routing ambiguity may result from the change of RAN and based on the determination triggers a re-registration of its network address. A foreign agent (FA) within a packet data serving node (PDSN) monitors network address re-registrations are being created for the same MS. Based on this determination the PDSN terminates redundant R-P network connections resulting from movement of the MS between different RANs.

A novel method and apparatus is disclosed for performing seamless handoff of a mobile station (MS) between Radio Access Networks (RANs) that use different types of wireless interfaces. The described embodiments enable an MS to handoff between different RANs without causing routing ambiguity and without substantial loss of network data. Upon moving from the coverage area of a first RAN using a first wireless interface to the coverage area of a second RAN using a second wireless interface an MS determines whether routing ambiguity may result from the change of RAN and based on the determination triggers a re-registration of its network address. A foreign agent (FA) within a packet data serving node (PDSN) monitors network address re-registrations are being created for the same MS. Based on this determination the PDSN terminates redundant R-P network connections resulting from 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.