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Extended service set transitions in wireless networks

  • US 9,820,199 B2
  • Filed: 11/25/2015
  • Issued: 11/14/2017
  • Est. Priority Date: 05/11/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • transmitting, by an access point, discovery information identifying a first Extended Service Set (ESS) network to which the access point is connected;

    identifying at least one common key holder from the discovery information;

    transmitting an Extended Capability information element (IE) including a Fast Initial Link Setup (FILS) bit, the FILS bit indicating a FILS capability of using a common key for fast transitions between different ESS networks, wherein the FILS capability allows for faster authentication of a mobile device with a second access point when the mobile device transitions from the first ESS network to a second ESS network to which the second access point is connected; and

    receiving a request from the mobile device to authenticate with the second access point, wherein the faster authentication with the second access point is achieved using the at least one common key holder, wherein a key hierarchy produces the common key across the first and second ESS networks to allow fast authenticated ESS transitions for the mobile device.

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