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Methods and apparatus for power efficient operation of LTE based machine type communications

  • US 9,681,465 B2
  • Filed: 01/09/2014
  • Issued: 06/13/2017
  • Est. Priority Date: 01/17/2013
  • Status: Active Grant
First Claim
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1. A method of wireless communications by a user equipment (UE), comprising:

  • signaling information regarding one or more traffic requirements for the UE to a base station (BS) for use in persistent scheduling (PS);

    receiving signaling from the BS indicating one or more PS opportunities of traffic for the UE;

    powering down one or more radio components between PS opportunities when traffic is not expected;

    powering on the radio components for the PS opportunities;

    receiving an indication, of downlink traffic, from the BS in a same subframe as one of the PS opportunities;

    detecting uplink traffic, comprising uplink data, for the UE to send or receive before a next PS opportunity;

    powering on or maintaining power for the radio components for at least one of the uplink traffic or the downlink traffic for the UE to send or receive before the next PS opportunity;

    performing a random access channel (RACH) procedure to signal the uplink data to the BS; and

    revealing a unique identity of the UE via the RACH procedure.

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