Communication control device and communication control method
US9408248B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2013 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Apr 22, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/19
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provided are a communication control device by which a situation where a mobile station is disabled to receive a terminating call can be prevented from continuing for a long time, even when the IP-CAN bearer is removed for some reason. A P-CSCF 310 executes the steps of: detecting a state of the IP-CAN Bearer; transmitting a 503 Service Unavailable, rejecting a terminating call to an UE 100, to a source making the terminating call when loss of the IP-CAN Bearer which has been established is detected; and canceling the transmission of the rejection response when receiving a signal from the UE 100 in a situation where the loss of the IP-CAN bearer is detected, the signal being related to an originating call to the IP multimedia subsystem and being a signal other than registration to the IP multimedia subsystem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.