WIRELESS TERMINAL DEVICE AND WIRELESS COMMUNICATION METHOD

• US 20120178497A1
• Filed: 01/06/2012
• Published: 07/12/2012
• Est. Priority Date: 01/07/2011
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Shiraiwa, Nobuyuki
• Granted Patent: US 8,463,320 B2
• Time in Patent Office: Days
• US Class Current: 455/552.1
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

When initiating data communication through an LTE standard, a control unit of a cellular telephone device causes a wireless communication unit to transmit a communication initiation request, and in a case of receiving information indicating that communication is enabled in response to the communication initiation request, the control unit causes the wireless communication unit to initiate data communication through the LTE standard. Moreover, in a case in which the wireless communication unit has failed to receive information indicating that communication is enabled, the control unit of the cellular telephone device causes the wireless communication unit to initiate wireless connection through the CDMA standard.

Claims

1. A wireless terminal device that performs wireless communication in a state where communication information has been acquired through a plurality of communication standards, the wireless terminal device comprising:

a wireless communication unit that performs wireless communication through any one of a first communication standard and a second communication standard, wherein the first communication standard maintains a state where communication information has been acquired even after terminating communication, and initiates data communication based on the communication information when initiating communication again, and wherein the second communication standard discards communication information when terminating communication, acquires communication information again when initiating communication again, and initiates data communication based on the communication information that has been acquired again; and

a communication control unit that causes the wireless communication unit to transmit a communication initiation request when initiating data communication through the first communication standard, wherein, in a case of receiving information indicating that communication is enabled in response to the communication initiation request, the communication control unit causes the wireless communication unit to initiate data communication through the first communication standard.

2. The wireless terminal device according to claim 1,

wherein, when transmitting the communication initiation request through the first communication standard, the control unit suspends initiation of the data communication even in a state where the communication information has been acquired.

3. The wireless terminal device according to claim 2,

wherein, in a case of receiving information indicating that communication is enabled in response to the communication initiation request in a state where the initiation of the data communication is suspended, the communication control unit cancels such a suspended state to initiate the data communication.

4. The wireless terminal device according to claim 1,

wherein, in a case of not receiving the information indicating that communication is enabled, the communication control unit maintains a state where the communication information of the first communication standard has been acquired.

5. The wireless terminal device according to claim 4,

wherein the communication control unit causes the wireless communication unit to initiate data communication through the second communication standard.

6. The wireless terminal device according to claim 1,

wherein the communication control unit performs communication through the first communication standard in priority to communication through the second communication standard.

7. The wireless terminal device according to claim 1,

wherein the first communication standard is an LTE (Long Term Evolution) standard, and the second communication standard is a CDMA (Code Division Multiple Access) standard.

8. A wireless communication method implemented by a wireless terminal device that performs wireless communication through any one of a first communication standard and a second communication standard, wherein the first communication standard maintains a state where communication information has been acquired even after terminating communication, and initiates data communication based on the communication information when initiating communication again, and wherein the second communication standard discards communication information when terminating communication, acquires communication information again when initiating communication again, and initiates data communication based on the communication information that has been acquired again, the method comprising the steps of:

transmitting a communication initiation request when initiating data communication through the first communication standard; and

initiating data communication through the first communication standard in a case of receiving information indicating that communication is enabled in response to the communication initiation request.