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
Laser-marked multi-component assemblies, kits, and related methods
Specification of multithreading in programmable device configuration
Image analysis platform for identifying artifacts in samples and laboratory consumables
Managing consistent interfaces for business objects across heterogeneous systems
Plastic ampule
High zirconia fused cast refractory
Information processor, method for verifying authenticity of computer program, and computer program product
  Randomly Featured Patents
Laser piercing apparatus for moving web material
Image selecting apparatus, camera, and method of selecting image
Device for providing a temporary anchor connecting point on scaffolding
Shoe lasting machine
Intercalated clay useful for making an .alpha.-olefin polymer material nanocomposite
Plate writing instrument
Variable-speed drive unit
Induction heating device, induction heating fixing device and image forming apparatus
Storage case
Twin compartment squeeze bottle