Pre-configured uplink (UL) resource (PUR) start time and offset

1. A method for wireless communication, comprising:

receiving a pre-configured uplink resource (PUR) configuration information comprising at least one least significant bit (LSB) of a hyper system frame number (H-SFN);

determining a PUR start time based on the H-SFN identified at least by the LSB; and

transmitting, to a base station, a data message on a PUR indicated in the PUR configuration information at the PUR start time.

2. The method of claim 1 , in which a value of the LSB corresponds to an LSB of a current H-SFN or a previous H-SFN.

3. The method of claim 1 , in which:

the LSB indicates a reference time of an initial downlink message; and

the initial downlink message comprises the PUR configuration information.

4. The method of claim 3 , in which the initial downlink message comprises a radio resource control (RRC) connection release message.

5. The method of claim 3 , in which retransmissions of the initial downlink message comprise the LSB.

6. The method of claim 1 , in which a value of the LSB corresponds to an H-SFN subsequent to an initial downlink message.

7. The method of claim 1 , further comprising determining the H-SFN based on a specific subframe of a set of subframes for repetitions of a physical downlink shared channel (PDSCH).

8. The method of claim 7 , in which the specific subframe is a first subframe of the set of subframes.

9. The method of claim 7 , in which the specific subframe is a last subframe of the set of subframes used.

10. The method of claim 1 , in which the PUR configuration information comprises an initial configuration information or reconfiguration information.

11. A method for wireless communication, comprising:

receiving a downlink message comprising pre-configured uplink resource (PUR) configuration information;

determining at least one least significant bit (LSB) of a hyper system frame number (H-SFN) corresponding to the received downlink message; and

transmitting a signal including the at least one LSB to a base station.

12. The method of claim 11 , in which the downlink message comprises a radio resource control (RRC) connection release message.

13. The method of claim 11 , further comprising determining a PUR start time based on the H-SFN corresponding to the at least one LSB.

14. The method of claim 11 , further comprising determining the H-SFN based on a specific subframe within a set of subframes used for repetitions of a physical downlink shared channel (PDSCH).

15. The method of claim 14 , in which the specific subframe is a first subframe of the set of subframes used for repetitions of the PDSCH.

16. The method of claim 14 , in which the specific subframe is a last subframe of the set of subframes used for repetitions of the PDSCH.

17. The method of claim 11 , further comprising receiving a message identifying a subframe of the H-SFN, the identified subframe corresponding to a PUR start time.

18. A method for wireless communication, comprising:

decoding a downlink transmission;

determining whether the downlink transmission is a retransmission;

determining a pre-configured uplink resource (PUR) start time based on a hyper system frame number (H-SFN) of the downlink transmission as a reference H-SFN when the downlink transmission is the retransmission; and

transmitting, to a base station, data on a PUR at the PUR start time.

19. The method of claim 18 , further comprising determining whether the downlink transmission is the retransmission based on a radio resource control (RRC) message.

20. The method of claim 18 , further comprising determining the H-SFN based on a specific subframe of a set of subframes used for repetitions of a physical downlink shared channel (PDSCH).

21. The method of claim 20 , in which the specific subframe is a first subframe of the set of subframes used for repetitions of the PDSCH.

22. The method of claim 20 , in which the specific subframe is a last subframe of the set of subframes used for repetitions of the PDSCH.

23. The method of claim 18 , further comprising:

receiving, from the base station, PUR configuration information; and

determining a subframe corresponding to the PUR start time based on the PUR configuration information.

24. The method of claim 18 , further comprising receiving a message identifying a subframe of the H-SFN, the identified subframe corresponding to the PUR start time.

25. An apparatus for wireless communications at a user equipment (UE), comprising:

a processor;

a memory coupled with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus:

to receive a pre-configured uplink resource (PUR) configuration information comprising at least one least significant bit (LSB) of a hyper system frame number (H-SFN);

to determine a PUR start time based on the H-SFN identified at least by the LSB; and

to transmit, to a base station, data on a PUR indicated in the PUR configuration information at the PUR start time.

26. The apparatus of claim 25 , in which:

the LSB indicates a reference time of an initial downlink message; and

the initial downlink message comprises the PUR configuration information.

27. The apparatus of claim 26 , in which the initial downlink message comprises a radio resource control (RRC) connection release message.

28. The apparatus of claim 26 , in which retransmissions of the initial downlink message comprise the LSB.

29. The apparatus of claim 25 , further comprising determining the H-SFN based on a first subframe of a set of subframes used for repetitions of a physical downlink shared channel (PDSCH).

30. The apparatus of claim 25 , further comprising determining the H-SFN based on a last subframe of a set of subframes used for repetitions of a physical downlink shared channel (PDSCH).