Back to results
US 9,178,893 B2Granted
Secure AD HOC communication systems and methods across heterogeneous systems
AssigneeMotorola Solutions, Inc.
InventorsTrent J. Miller, Stephen C. Glass, David E. Klein, Wei Mao, Francesca Schuler
Life of this patent
Estimating the term…
Abstract
A method for rapid peer-to-peer link establishment among a set of mobile devices includes operating a first second device, advertising system attributes in a wireless beacon by the second device, receiving the system attributes from the wireless beacon at the first device, comparing the system attributes to a service needed by the first device, and, if the second device is compatible based on the comparing, establishing a wireless link by the first device to the second device. A system and wireless device for rapid peer-to-peer link establishment among a set of mobile devices are also described.
Claims20
A method for rapid peer-to-peer link establishment among a set of mobile devices, the method comprising:
- operating a first device, wherein the first device utilizes a first wireless wide area network (WAN) technology to access a first WAN;
- detecting, by the first device, a lack of network connectivity with the first WAN, and responsively:
- monitoring for and receiving, at the first device, advertised system attributes in a plurality of wireless beacons from respective second devices using a third wireless technology, the advertised system attributes setting forth attributes of the respective second device with respect to second device operation using a second wireless WAN technology to access a second WAN;
- comparing, by the first device, the advertised system attributes to attributes needed by the first device;
- and
- selecting, by the first device, advertised system attributes associated with a particular second device best matching the attributes needed by the first device, and establishing a wireless link by the first device to the particular second device using the third wireless technology.
3 more elements
A system comprising:
- a first wireless device configured to use a first wireless wide area network (WAN) technology to access a first WAN;
- a plurality of second wireless devices, each configured to use a second wireless WAN technology to access a second WAN;
- and
- a server communicatively coupled to the first wireless device at least in part through the first wireless WAN technology and communicatively coupled to the plurality of second wireless devices at least in part through the second wireless WAN technology;
- wherein the server is configured to provide a cryptographic key to the first wireless device and the plurality of second wireless devices;
- wherein the second wireless devices are configured to periodically transmit system attribute advertisements using a third wireless technology, where the system attribute advertisements are encrypted with the cryptographic key and where the system attribute advertisements set forth attributes of the respective second wireless device with respect to second wireless device operation using the second wireless WAN technology;
- and
- wherein the first wireless device is further configured to detect a loss of coverage on the first wireless WAN technology, and responsively:
- monitor for and receive and decrypt the system attribute advertisements from the second wireless devices;
- select a decrypted system attribute advertisement associated with a particular second wireless device best matching attributes needed by the first wireless device;
- and
- establish, using the third wireless technology, an ad hoc connection with the particular second wireless device.
9 more elements
A wireless device comprising:
- a first radio configured to operate a first wireless wide area network (WAN) technology to access a first WAN;
- a second radio configured to operate a third wireless technology;
- a processor communicatively coupled to the first radio and the second radio;
- and
- software stored in memory and comprising instructions executable by the processor, and in response to such execution cause the processor to:
- receive a cryptographic key;
- detect, via the first radio, a loss of coverage on the first wireless WAN technology and responsively:
- monitor for and receive, via the second radio, system attribute advertisements in a plurality of wireless beacons from respective second devices using the third wireless technology, the system attribute advertisements setting forth attributes of the respective second device with respect to second device operation using a second wireless WAN technology to access a second WAN;
- decrypt the system attribute advertisements with the cryptographic key;
- and
- select a decrypted system attribute advertisement associated with a particular second device best matching attributes needed by the wireless device, and establish, via the second radio, an ad hoc connection with the particular second device.
8 more elements
Dependencies are inferred from the claim text.