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
Identification of protected content in e-mail messages
Determining ill conditioning in square linear system of equations
Method for producing SOI substrate and SOI substrate
Device for accurately measuring concentration of component in blood and control method of the device
Antenna array system
Scaleable status tracking of multiple assist hardware threads
Probe for ultrasound diagnostic apparatus
  Randomly Featured Patents
System and method for creating metadata
Multiple-input multiple-output (MIMO) communication method and system of enabling the method
Advanced food and/or drink organization and/or handling system
Liquid dish cleaning compositions
Hot swap fan module
Aryl ureas with angiogenisis inhibiting activity
Hygienic protecting device for an electronic thermometer
Device for evaluating the surface of a tire
Cylindrical torch passage construction for internal combustion engine
Multidimensional address generator and a system for controlling the generator