Patent · US Expired

Communicating packet data with a mobile station roaming within an incompatible mobile network

US6137791A · kind A · utility

217Cited by

12References

17Claims

0Family size

Inventors

Lars Frid · Stockholm, SE
Arne Pehrsson · Huddinge, SE
Martin Backstrom · Danderyd, SE
Dick Andersson · Stockholm, SE
Ulf Axelsson · Karlstad, SE
Ulf Olsson · Sollentuna, SE

Key dates

Filing date	Mar 25, 1997
Grant date	Oct 24, 2000
Priority date	—
Expiry date	Mar 25, 2017

Classification

Technology area (CPC H)Electricity
CPC primaryH04W88/16
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A roaming mechanism enabling a mobile station to roam between a first data packet network utilizing a Mobile IP Method (MIM) and a second data packet network utilizing a Personal Digital Cellular Mobility Method (PMM) is disclosed. A foreign agent (FA) is introduced into the PMM network for enabling a mobile station associated with the MIM network and currently roaming within the PMM network to communicate packet data with an associated home agent (HA). A home agent (HA) is further introduced into the PMM network for enabling a mobile station associated with the PMM network and currently roaming within the MIM network to communicate packet data with an associated FA or Mobile IP Client Emulator (MICE) currently serving the roaming mobile station.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.