Patent · US Active

Mobile communication method

US8213939B2 · kind B2 · utility

6Cited by

1References

1Claims

0Family size

Assignee

NTT DOCOMO, INC. · JP

Inventors

Mikio Iwamura · Yokohama, JP
Wuri Andarmawanti Hapsari · Tokyo, JP
Alf Zugenmaier · Munich, DE

Key dates

Filing date	Sep 18, 2009
Grant date	Jul 3, 2012
Priority date	—
Expiry date	Sep 18, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04W92/20
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In a mobile communication method according to the present invention includes the steps of: transmitting, from a handover source radio base station to a switching center, a handover request including an NCC, a PCI and a KeNB*; changing, at the switching center, the NCC, changing, at the switching center, the KeNB* on the basis of the PCI, and transmitting, from the switching center to the handover target radio base station, the handover request including the changed NCC and the changed KeNB*; generating, at the handover target radio base station, a first key on the basis of the KeNB*; and generating, at the mobile station, the first key on the basis of the NCC and the PCI included in a handover command.

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