Patent · US Active

Mobile communication method

US8457638B2 · kind B2 · utility

3Cited by

3References

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	Jun 8, 2012
Grant date	Jun 4, 2013
Priority date	—
Expiry date	Jun 8, 2032

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 swithcing center, a handover request including an NCC, a PCI and a KeNB*; changing, at the swithcing center, the NCC, changing, at the swithcing center, the KeNB* on the basis of the PCI, and transmitting, from the swithcing 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.