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Method and apparatus for time division coexistence in unlicensed radio frequency bands for mobile devices

  • US 9,853,797 B2
  • Filed: 09/30/2014
  • Issued: 12/26/2017
  • Est. Priority Date: 02/03/2014
  • Status: Active Grant
First Claim
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1. A method for time division based coexistence in an unlicensed radio frequency (RF) band, the method comprising:

  • by a wireless communication device;

    establishing a connection between the wireless communication device and an eNodeB of a wireless network using a primary component carrier of a primary cell in a licensed radio frequency band;

    obtaining a configuration for a secondary cell from the eNodeB, the secondary cell operating in the unlicensed radio frequency band, and the configuration for the secondary cell including a set of timers indicating a pattern of on cycles and off cycles for use of the secondary cell, wherein the configuration for the secondary cell synchronizes communication for all wireless communication devices communicating with the secondary cell of the eNodeB to use the pattern of on cycles and off cycles of the secondary cell;

    configuring a secondary component carrier for the secondary cell to supplement the primary component carrier for the connection between the wireless communication device and the eNodeB, the first and second component carriers used together for communication via carrier aggregation;

    communicating with the eNodeB via both the primary component carrier of the primary cell and the secondary component carrier of the secondary cell in parallel during at least one of the on cycles of the secondary cell;

    communicating with the eNodeB using only the primary component carrier during at least one of the off cycles of the secondary cell; and

    inhibiting communication with the eNodeB via the secondary component carrier during the off cycles of the secondary cell,wherein the eNodeB schedules the wireless communication device to communicate via the secondary component carrier of the secondary cell to not overlap in time with communication by other wireless communication devices configured to communicate with the secondary cell during the on cycles of the secondary cell.

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