Title:
衛星パケット通信システムおよびそのサントランジット制御方法
Document Type and Number:
Japanese Patent JP3576441
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a satellite packet communication system that can efficiently conduct sun transit control without the need for moving all mobile units and to provide its sun transit control method. SOLUTION: A subscriber system processing unit 44 is provided with a sun transit information transmission instruction means that instructs a mobile unit 308 resident in a 1st communication satellite 104 being an object of sun transit to transmit sun transit information to a base station 204 and with a shift instruction transmission indication means that instructs the base station 204 to transmit an instruction to move the mobile unit 308 being a packet destination from the 1st communication satellite 104 to a 2nd communication satellite 102 not an object of sun transit to the mobile unit 308, when a network 44 transmits a packet to the mobile unit 308.
Inventors:
Keiko Yoshihara
Hiroshi Kubozawa
Koji Sasada
Seigo Numajiri
Hiroshi Kubozawa
Koji Sasada
Seigo Numajiri
Application Number:
JP2000000510A
Publication Date:
October 13, 2004
Filing Date:
January 05, 2000
Export Citation:
Assignee:
NTT DoCoMo, Inc.
International Classes:
H04B7/15; H04B7/155; H04L12/28; (IPC1-7): H04B7/155
Domestic Patent References:
| JP5110482A | ||||
| JP62285531A | ||||
| JP5067994A | ||||
| JP59138133A | ||||
| JP61290825A |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Denichi Hashimoto
Kazuo Abe
Denichi Hashimoto