Communication terminal and communication method thereof

• US 20050266895A1
• Filed: 05/27/2005
• Published: 12/01/2005
• Est. Priority Date: 05/31/2004
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Okamoto, Hideki, Yuge, Mariko
• Granted Patent: US 7,493,147 B2
• Time in Patent Office: Days
• US Class Current: 455/572
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 76/19 Connection re-establishment
• CPC Class Codes: H04W 76/25 Maintenance of established connections
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A communication terminal has an EVDO radio control section which performs radio communication control based on an EVDO communication system, and a data communication control section which releases a data link and requests the EVDO radio control section to release a communication session if a power-off command is entered. The EVDO radio control section releases the communication session in response to the communication session release request made by the data communication control section. When the EVDO radio control section releases the communication session based on a command for a power-off processing, the EVDO radio control section maintains the communication session released. When the EVDO radio control section releases the communication session based on any command other than the command of the power-off processing, the EVDO radio control section performs the reconnection processing of the communication session.

Claims

1. A communication terminal, comprising:

a radio control section which performs radio communications conforming to a communication system for establishing a communication session by sending a parameter used for communications to a network, and performing a reconnection processing if the communication session is released so as to keep the communication session established regardless of whether or not information to be communicated exists,

wherein when the radio control section releases the communication session based on a power-off processing, the radio control section maintains the communication session released.

5. The communication terminal according to claim 1,

wherein when the radio control section releases the communication session based on any processing other than the power-off processing, the radio control section performs the reconnection processing of the communication session.

2. A communication terminal, comprising:

a radio control section which performs radio communications conforming to a communication system for performing communications by connecting a physical connection by radio, a communication session for deciding a communication condition by sending a parameter used for communications to a network, and a data link for transmitting and receiving data in sequence with the network, and performing a reconnection processing if the communication session is released so as to keep the communication session established regardless of whether or not information to be communicated exists,

wherein when the radio control section releases the communication session based on a power-off processing, the radio control section maintains the communication session released.

6. The communication terminal according to claim 2,

wherein when the radio control section releases the communication session based on any processing other than the power-off processing, the radio control section performs the reconnection processing of the communication session.

3. A communication terminal, comprising:

a radio control section which performs radio communications conforming to a first communication system for establishing a communication session by sending a parameter used for communications to a network, and performing a reconnection processing if the communication session is released so as to keep the communication session established regardless of whether or not information to be communicated exists, and a second communication system for sharing a communication section with the first communication system and enabling to establish the communication session when a communication connection is established,

wherein when the radio control section performs radio communications conforming to the first communication system and the radio control section releases the communication session based on a power-off processing, the radio control section maintains the communication session released.

4. The communication terminal according to claim 3,

wherein the radio control section is on standby with the second communication system and is commanded to make a transition from the second communication system to the first communication system.

7. The communication terminal according to claim 3,

wherein when the radio control section releases the communication session based on any processing other than the power-off processing, the radio control section performs the reconnection processing of the communication session.

8. A communication terminal conforming to a communication system for establishing a communication session by sending a parameter used for communications to a network, and performing a reconnection processing if the communication session is released so as to keep the communication session established regardless of whether or not information to be communicated exists, comprising:

a radio control section which performs radio communications based on the communication system; and

a data communication control section which releases a data link and requests the radio control section to release the communication session if a power-off command is entered,

wherein the radio control section releases the communication session in response to the communication session release request made by the data communication control section, and when the radio control section releases the communication session based on a command for a power-off processing, the radio control section maintains the communication session released.

9. The communication terminal according to claim 8,

wherein when the radio control section releases the communication session based on any command other than the command of the power-off processing, the radio control section performs the reconnection processing of the communication session.

10. A communication method of a communication terminal which performs radio communications conforming to a first communication system for establishing a communication session by sending a parameter used for communications to a network, and performing a reconnection processing if the communication session is released so as to keep the communication session established regardless of whether or not information to be communicated exists, and a second communication system for sharing a communication section with the first communication system and enabling to establish the communication session when a communication connection is established,

wherein when the communication terminal performs radio communications conforming to the first communication system and the communication session is released based on a power-off processing, the communication session is maintained released.