Methods and apparatus for power efficient operation of LTE based machine type communications
First Claim
Patent Images
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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Abstract
Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to techniques for power efficient operation of LTE MTC. A method is provided wireless communications by a user equipment (UE). The method generally includes signaling information regarding traffic requirements for the UE to a base station (BS) for use in persistent scheduling (PS), receiving signaling from the BS indicating PS opportunities of traffic for the UE, powering on the radio components for the PS opportunities, and powering down radio components between PS opportunities when traffic is not expected.
13 Citations
20 Claims
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1. A method of wireless communications by a user equipment (UE), comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for wireless communications, comprising:
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at least one processor configured to; signal information regarding one or more traffic requirements for the apparatus to a base station (BS) for use in persistent scheduling (PS); receive signaling from the BS indicating one or more PS opportunities of traffic for the apparatus; power down one or more radio components between PS opportunities when traffic is not expected; power on the radio components for the PS opportunities; receive an indication of downlink traffic, from the BS in a same subframe as one of the PS opportunities; detect uplink traffic, comprising uplink data, for the apparatus to send or receive before a next PS opportunity; power on or maintain power for the radio components for at least one of the uplink traffic or the downlink traffic for the apparatus to send or receive before the next PS opportunity; perform a random access channel (RACH) procedure to signal the uplink data to the BS; and reveal a unique identity of the apparatus via the RACH procedure; and a memory coupled with the at least one processor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for wireless communications, comprising:
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means for signaling information regarding one or more traffic requirements for the apparatus to a base station (BS) for use in persistent scheduling (PS); means for receiving signaling from the BS indicating one or more PS opportunities of traffic for the apparatus; means for powering down radio components between PS opportunities when traffic is not expected; means for powering on the radio components for the PS opportunities; means for receiving an indication, of downlink traffic, from the BS in a same subframe as one of the PS opportunities; means for detecting uplink traffic, comprising uplink data, for the apparatus to send or receive before a next PS opportunity; means for powering on or maintaining power for the radio components for at least one of the uplink traffic or the downlink traffic for the apparatus to send or receive before the next PS opportunity; means for performing a random access channel (RACH) procedure to signal the uplink data to the BS; and means for revealing a unique identity of the apparatus via the RACH procedure.
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20. A non-transitory computer-readable medium comprising instructions executable to:
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signal information regarding one or more traffic requirements for a user equipment (UE) to a base station (BS) for use in persistent scheduling (PS); receive signaling from the BS indicating one or more PS opportunities of traffic for the UE; power down radio components of a UE between PS opportunities when traffic is not expected; power on the radio components for the PS opportunities; receive an indication, of downlink traffic, from the BS in a same subframe as one of the PS opportunities; detect uplink traffic, comprising uplink data, for the apparatus to send or receive before a next PS opportunity; power on or maintain 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; perform a random access channel (RACH) procedure to signal the uplink data to the BS; and reveal a unique identity of the UE via the RACH procedure.
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Specification