| 发明名称 | Mobile communication method, switch, and subscriber information server | ||
| 摘要 | A mobile communication method according to the present invention includes a step A in which, in location registration processing of a mobile station, an switch of a first communication scheme and an switch of a second communication scheme send a subscriber information server first information used to determine whether or not all coverage areas have a same capability of providing a telephony service by packet switching; and a step B in which, when a status inquiry request made upon receipt of a terminating-call signal destined for the mobile station is received from an application server, the subscriber information server determines based on the first information whether or not to make an inquiry at the switch of the first communication scheme or the switch of the second communication scheme about whether or not provision of the telephony service by packet switching is possible in an area where the mobile station is located. | ||
| 申请公布号 | US9185546(B2) | 申请公布日期 | 2015.11.10 |
| 申请号 | US201113577130 | 申请日期 | 2011.02.04 |
| 申请人 | NTT DOCOMO, INC. | 发明人 | Tanaka Itsuma;Suzuki Keisuke |
| 分类号 | H04W40/00;H04W8/04;H04W8/12;H04W48/14;H04W48/18;H04W76/02 | 主分类号 | H04W40/00 |
| 代理机构 | Osha Liang LLP | 代理人 | Osha Liang LLP |
| 主权项 | 1. A mobile communication method comprising: a step A in which, in location registration processing of a mobile station, a switch of a first communication scheme and a switch of a second communication scheme send location update information to a subscriber information server, wherein the location update information includes an information element the information element being used to determine whether or not all coverage areas covered by the switches have a same capability of providing a telephony service by packet switching; and a step B in which, when a status inquiry request made upon receipt of a terminating-call signal destined for the mobile station is received from an application server, the subscriber information server determines based on the location update information whether or not to make an inquiry at the switch of the first communication scheme or the switch of the second communication scheme about whether or not providing the telephony service by packet switching is possible in an area where the mobile station is located. | ||
| 地址 | Tokyo JP | ||