| US 7,565,133 B2 | ||
| Communication terminal and program using a packet switched communication line and a circuit switched communication line | ||
| Kazuhiro Yamada, Yokohama (Japan); and Yoshiaki Hiramatsu, Yokosuka (Japan) | ||
| Assigned to NTT DoCoMo, Inc., Tokyo (Japan) | ||
| Filed on Dec. 10, 2004, as Appl. No. 11/9,750. | ||
| Claims priority of application No. 2003-412430 (JP), filed on Dec. 10, 2003. | ||
| Prior Publication US 2005/0128959 A1, Jun. 16, 2005 | ||
| Int. Cl. H04W 4/26 (2009.01) | ||
| U.S. Cl. 455—405 [370/328; 370/352] | 19 Claims |
| 1. A communication terminal for performing at least partly simultaneous voice communication and data communication with a
correspondent terminal, comprising:
a first communication controller that establishes a circuit-switching communication line to the correspondent node;
a second communication controller that establishes a packet-switching communication line to the correspondent node, wherein
the communication terminal uses packet-switching communication via the packet-switching communication line at least partly
concurrently with communicating via the circuit-switching communication line;
data sending-receiving unit that sends and receives data using the packet-switching communication line established by the
second communication controller; and
notifying unit configured to notify that the data sending-receiving unit has received data while performing the circuit-switching
communication,
wherein the second communication controller establishes the packet-switching communication by:
sending a connection request message to a gateway apparatus, the connection request message including subscriber information
of the correspondent node,
receiving a connection response message from the gateway apparatus, the connection response message including a data communication
address of the correspondent node, and
establishing the packet communication line dedicated to data communication to the correspondent node.
|