Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method for time stamp-based replay protection and PDSN synchronization at a PCF










Image Number 2 for United States Patent #7116668.

A packet control function (PCF) exchanging messages with a packet data serving node (PDSN) in a wireless communication network guards against malicious or erroneous message replay by checking the "reasonableness" of PDSN time stamps in registration messages it receives over its PDSN interface. Received messages that are too old are rejected by the PCF, even if otherwise valid. A configurable time threshold may be set at the PCF that determines the allowable maximum age of a received message. Further, because messages received from the PDSN contain echoed identifier values generated by the PCF, the PCF may implement identifier value function generation that insures no repeated identifier values over a desired interval. The desired interval is set larger than the allowable message age to further guard against attempted message replay.








 
 
  Recently Added Patents
Carbon nanotube fiber spun from wetted ribbon
Consistent retention and disposition of managed content and associated metadata
System, device and method for transrating file based assets
Method and system for dynamic storage tiering using allocate-on-write snapshots
Gas cap removal tool
Method of manufacturing toner
Support tray for server
  Randomly Featured Patents
Immiscible liquid separating
Needle assembly and components thereof
Systems and methods for tuning an operating system, application, or network component
Method and apparatus for providing intelligent interpretation of calendaring information to schedule computer data operations
Drafting machine
Cable sealing apparatus
Non-reciprocal circuit device
Hollow-fiber filter module with filtrate conduit
Transitional image for a portion of a display screen
Portable electronic copying machine