Patent · US Active

Security for paging messages

US11696121B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

Apple Inc. · US

Inventors

Sudeep Manithara Vamanan · Nuremberg, DE
Robert Zaus · Munich, DE
Birgit Breining · Munich, DE
Chen Ho Chin · Deerlijk, BE
Hyung-Nam Choi · Hamburg, DE

Key dates

Filing date	May 3, 2017
Grant date	Jul 4, 2023
Priority date	—
Expiry date	Mar 31, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04W76/27
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Briefly, in accordance with one or more embodiments, an apparatus of a user equipment (UE), comprises one or more baseband processors to derive a dynamic scrambling key, and a memory to store the dynamic scrambling key and a temporary UE identifier (temporary UE ID) assigned to the UE. The one or more baseband processors monitor a paging request for a scrambled UE identifier (UE ID) to determine if the paging request is intended for the UE by unscrambling the scrambled UE ID with the dynamic scrambling key to produce the temporary UE ID. The paging request is intended for the UE if the temporary UE ID produced by unscrambling the scrambled UE ID matches the temporary UE ID stored in the memory. A new dynamic scrambling key may be derived each time the UE returns to a radio resource control idle (RRC_IDLE) state.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.