Pre-configuration of devices supporting national security and public safety communications
US9872162B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2014 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Feb 18, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W76/14
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques for distributing and using application codes and discovery filters in device-to-device (D2D) wireless devices. An example method for an announcing device includes receiving, from a coordinating node, first and second application codes and associated timing information. The associated timing information defines respective first and second validity intervals for the first and second application codes, such that the first and second validity intervals are at least partly non-overlapping. The method further comprises subsequently transmitting, during the first validity interval, one or more discovery messages that include or are based on the first application code, and transmitting, during the second validity interval, one or more discovery messages that include or are based on the second application code. Corresponding techniques for monitoring devices are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.