Patent · US Active

Mobile communication method and mobile station

US8208928B2 · kind B2 · utility

4Cited by

2References

17Claims

0Family size

Assignee

NTT DOCOMO, INC. · JP

Inventors

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

Key dates

Filing date	Jun 19, 2009
Grant date	Jun 26, 2012
Priority date	—
Expiry date	Jun 19, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2463/061
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The present invention relates to a mobile communication method in which a mobile station performs a handover from a handover source radio base station to a handover target radio base station. The mobile communication method includes the steps of: (A) acquiring, at the handover target radio base station, from the handover source radio base station or a switching center, a key for calculating a first key for generating a certain key used in a communication between the handover target radio base station and the mobile station; and (B) acquiring, at the handover target radio base station, from the switching center, a second key for calculating a first key for generating a certain key used in a communication between a next handover target radio base station and the mobile station.

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