Method for determining temporary mobile identifiers and managing use thereof
US6463154B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1998 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Aug 28, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In the method for managing the use of temporary mobile identifiers (TIDs), the mobile and the network each store a list of TIDs for the mobile. Newly determined TIDs are added to the respective TID list such that the TIDs are stored in chronological order. To determine a new TID, the network sends a first challenge to the mobile and the mobile sends a second challenge to the network as part of a TID update protocol. The network and the mobile then determine the new TID based on the first and second challenges. As communication between the mobile and the network continues, the respective TID lists are updated. Namely, when either the network or the mobile confirms a TID, the TIDs older than the confirmed TID are deleted from the TID list. In communicating with one another, the mobile will use the oldest TID on its TID list, while the network will use the newest TID on its TID list.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.