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

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United States of America Patent

PATENT NO 6137791
SERIAL NO

08827029

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)SE-164 83 STOCKHOLM SE-164 83

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Andersson, Dick Kastrupgatan 3, 164 41 Kista, SE 9 527
Axelsson, Ulf Travarvagen 64, 175 39 Jarfalla, SE 5 247
Backstrom, Martin Poppelvagen 14, 141 41 Huddinge, SE 6 356
Frid, Lars Halsingegatan 3, 113 23 Stockholm, SE 6 379
Olsson, Ulf Grindg.ang.rdsvagen 15, 192 77 Sollentuna, SE 16 399
Pehrsson, Arne Hasselstigen 10, 141 71 Huddinge, SE 10 339

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