Resources Contact Us Home
Method for managing traffic encryption key in wireless portable internet system and protocol configuration method thereof, and operation method of traffic encryption key state machine in subsc

Image Number 13 for United States Patent #7907733.

Disclosed is a traffic encryption key (TEK) management method for automatically generating a TEK for a multicast or broadcast service by a base station to periodically update a TEK used by a subscriber station. The base station transmits the first Key Update Command message for updating a group key encryption key (GKEK) for encrypting the TEK and the second Key Update Command message for updating the TEK to the subscriber station to update the TEK. The base station establishes an M & B TEK Grace Time which is different from a TEK Grace Time established by the subscriber station, transmits the first message including a new GKEK to the subscriber station through a primary management connection before the M & B TEK Grace Time, and transmits the second message including a new TEK encrypted with the new GKEK thereto through a broadcast connection after the M & B TEK Grace Time.

  Recently Added Patents
Biphotonic photosensitizers, nanoparticles containing the same and their use as drugs
Early kill removal graphics processing system and method
Dehydratable hygiene articles
Supporting multiple channels of a single interface
Spreading technique applied to broadband mobile communications by satelite relying on DVB-RCS
Computer device with digitizer calibration system and method
Processing financial documents
  Randomly Featured Patents
Sealing joint for connecting adjoining duct pieces in an engine exhaust system
System and method for pre-configuring and authenticating data communication links
Mine stopping device and method of constructing same
Ink jet recording apparatus and method capable of performing high-speed recording
Benzylalcohol derivative and process for preparing
Method for manufacturing a composite high voltage insulator
Method and apparatus for non-disruptive telecommunication loop condition determination
Methods of forming capacitor structures including L-shaped cavities
Rotation detecting device and automobile with the same
Electronic circuit with array of programmable logic cells