发明名称 |
SYSTEMS AND METHODS FOR DEVICE-TO-DEVICE COMMUNICATION IN THE ABSENCE OF NETWORK COVERAGE |
摘要 |
A method and system for establishing a secure device-to-device connection between two mobile devices involves the use of a WiFi Direct (LTE Direct or other similar protocols) link paired with an IP Multimedia Subsystems (IMS) link. A device detects the presence of another device that it wishes to connect to. The devices negotiate a group owner, then authenticate each other using a variety of techniques, such as a centrally issued certificate. Thereafter, the devices derive keys to be used for communication, both over the WiFi Direct link and via the IMS link. A WiFi Direct Link may be paired with a Push to Talk over Cellular (PoC) link in order to couple together more than two devices. In such a connection, devices transmit to a group owner, which then sends multicast versions to the rest of the group devices. |
申请公布号 |
WO2014052303(A1) |
申请公布日期 |
2014.04.03 |
申请号 |
WO2013US61379 |
申请日期 |
2013.09.24 |
申请人 |
STOJANOVSKI, ALEXANDRE SASO;LUFT, ACHIM;VENKATACHALAM, MUTHAIAH |
发明人 |
STOJANOVSKI, ALEXANDRE SASO;LUFT, ACHIM;VENKATACHALAM, MUTHAIAH |
分类号 |
H04W92/18;H04W12/06 |
主分类号 |
H04W92/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|