Relay device, information transmission device, and information transmission method

• US 20040058644A1
• Filed: 09/22/2003
• Published: 03/25/2004
• Est. Priority Date: 09/18/2002
• Status: Abandoned Application

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Saigo, Satoru, Miura, Fumiaki
• Application Number:
  US10/666,178
• Publication Number:
  US 20040058644A1
• Time in Patent Office: Days
• US Class Current: 455/11.1
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques
• CPC Class Codes: H04L 12/1859 adapted to provide push services, e.g. data channels
• CPC Class Codes: H04L 12/1863 comprising mechanisms for improved reliability, e.g. status reports arrangements for detecting or preventing errors by carrying supervisory signal the return channel H04L1/16
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 51/23 Reliability checks, e.g. acknowledgments or fault reporting
• CPC Class Codes: H04L 51/58 Message adaptation for wireless communication
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/54 Presence management, e.g. monitoring or registration for receipt of user log-on information, or the connection status of the users
• CPC Class Codes: H04L 67/55 Push-based network services
• CPC Class Codes: H04L 67/561 Adding application-functional data or data for application control, e.g. adding metadata
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A relay device is disclosed, which can enable push type services suited to a network and as well as a network user. The relay device includes a connection detection section that detects a mobile device that is in a state in which the mobile device can transmit/receive information through a mobile communication network, and a notification transmission section for transmitting a result of the detection to a mail server that transmits mail information to the mobile device.

Claims

1. A relay device, comprising:

connection detection means for detecting that a client terminal which can transmit/receive information through a network is in a communicable state with the network.

2. The relay device according to claim 1,

wherein the connection detection means acquires transmission-related information required to transmit information to the client terminal, and

the relay device further comprising notification transmission means for transmitting results from the connection detection means and the acquired transmission-related information to an information transmission device for transmitting undelivered information to the client terminal.

3. The relay device according to claim 1, further comprising:

information transmission means for transmitting the undelivered information to the client terminal, provided that the connection detection means detects the client terminal is in a communicable state with the network.

4. The relay device according to claim 3,

wherein the information transmission means selects undelivered information to be transmitted to the client terminal from information stored in transmission information storage means, provided that the connection detection means detects the client terminal is in a communicable state with the network, and transmits the selected undelivered information to the client terminal.

5. The relay device according to claim 4,

wherein the information transmission means transmits the selected undelivered information to the client terminal together with other information transmitted to the client terminal.

6. The relay device according to claim 5,

wherein the other information transmitted to the client terminal is information transmitted/received by use of HTTP;

and

the information transmission means adds the selected undelivered information by changing the HTTP header of the other information transmitted to the client terminal, and transmits the selected undelivered information to the client terminal.

7. The relay device according to claim 4,

wherein the information transmission means transmits the selected undelivered information to the client terminal separately from the other information transmitted to the client terminal.

8. An information transmission device, comprising:

notification reception means for receiving notification concerning detection of a client terminal which can transmit/receive information through a network is in a communicable state with the network; and

information transmission means for transmitting undelivered information to the client terminal, provided that the notification reception means receives the notification.

9. The information transmission device according to claim 8,

wherein the information transmission means selects undelivered information to be transmitted to the client terminal from information stored in transmission information storage means, provided that the connection detection means detects the client terminal is in a communicable state with the network, and transmits the selected undelivered information to the client terminal.

10. The information transmission device according to claim 8,

wherein the notification reception means receives transmission-related information required to transmit information to the client terminal;

and

the information transmission means transmits the undelivered information to the client terminal, provided that the notification reception means receives the transmission-related information.

11. An information transmission method comprising:

a connection detection step of detecting, by use of connection detection means, a client terminal which can transmit/receive information through a network is in a communicable state with the network; and

an information transmission step of transmitting, by use of information transmission means, undelivered information to the client terminal, provided that the connection detection means detects the client terminal is in a communicable state with the network.

12. The information transmission method according to claim 11,

wherein, in the information transmission step, the information transmission means selects undelivered information to be transmitted to the client terminal from information stored in transmission information storage means, provided that the connection detection means detects the client terminal is in a communicable state with the network, and transmits the selected undelivered information to the client terminal.

13. The information transmission method according to claim 12,

wherein, in the information transmission step, the information transmission means transmits the selected undelivered information to the client terminal together with other information transmitted to the client terminal.

14. The information transmission method according to claim 13,

wherein, the other information transmitted to the client terminal is information transmitted/received by use of HTTP, and

in the information transmission step, the information transmission means adds the selected undelivered information by changing the HTTP header of the other information transmitted to the client terminal, and transmits the selected undelivered information to the client terminal.

15. The information transmission method according to claim 12,

wherein, in the information transmission step, the information transmission means transmits the selected undelivered information to the client terminal separately from the other information transmitted to the client terminal.

16. The information transmission method according to claim 11, further comprising:

an information acquiring step of acquiring, by use of the connection detection means, transmission-related information required to transmit information to the client terminal; and

an information output step of outputting, by use of the connection detection means, the acquired transmission-related information to the information transmission means.