現存の通信システムにおいてグループ通信サービスに参加するための方法および装置

Title:

現存の通信システムにおいてグループ通信サービスに参加するための方法および装置

Document Type and Number:

Japanese Patent JP4891430

Kind Code:

B2

Abstract:

A method for synchronizing encryption and decryption of a data frame in a communication network, the method comprising: encrypting a first data frame based on a first unique code in a first communication device, said first unique code being derived from a first sequential code; encapsulating said first encrypted data frame in a first transport frame, said first transport frame comprising a first portion and a second portion of said first sequential code; encrypting a second data frame based on a second unique code in the first communication device, said second unique code being derived from a second sequential code; encapsulating said second encrypted data frame in a second transport frame, said second transport frame comprising a first portion and a second portion of said second sequential code; and transmitting said first transport frame and said second transport frame to a second communication device, wherein said first portion of said first sequential code and said first portion of said second sequential code identify the same relative portions of said first and second sequential codes, and said second portion of said second sequential code represents a successive relative portion with respect to said second portion of said first sequential code.

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Inventors:

Mark Magenti
Douglas M Crockett
Eric Rosen

Application Number:

JP2010226192A

Publication Date:

March 07, 2012

Filing Date:

October 06, 2010

Export Citation:

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Assignee:

QUALCOMM INCORPORATED

International Classes:

H04L12/56; H04L69/14; H04B7/26; H04L12/66; H04M1/00; H04M11/00; H04W4/10; H04W4/24; H04W84/08

Domestic Patent References:

JP10327438A
JP7284157A

Foreign References:

WO1998049849A1
WO1999055020A1
WO1997050267A1
US5889774

Attorney, Agent or Firm:

Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen

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