Uplink data channel design for narrowband devices

An apparatus for wireless communications, comprising:

• at least one processor;
• memory coupled with the at least one processor, the memory comprising instructions executable by the at least one processor to cause the apparatus to:
• determine a first set of resources for transmission of data and a second set of resources for transmission of at least one pilot;
• determine a sequence for the transmission of the at least one pilot over the second set of resources based on at least one of a cell ID, a timing with respect to a slot boundary, a timing with respect to a subframe boundary, an absolute timing, a timing with respect to hopping instances, a rotation applied to a constellation, a cyclic prefix length, a UE ID, a cyclic shift, a repetition level, a modulation type, or an indication in a downlink grant;
• transmit the data over the first set of resources based at least in part on a first modulation scheme;
• and
• transmit the at least one pilot over the second set of resources based at least in part on a second modulation scheme, wherein the at least one pilot is based at least in part on the sequence.

An apparatus for wireless communications, comprising:

• means for determining a first set of resources for transmission of data and a second set of resources for transmission of at least one pilot;
• means for determining a sequence for the transmission of the at least one pilot over the second set of resources based on at least one of a cell ID, a timing with respect to a slot boundary, a timing with respect to a subframe boundary, an absolute timing, a timing with respect to hopping instances, a rotation applied to a constellation, a cyclic prefix length, a UE ID, a cyclic shift, a repetition level, a modulation type, or an indication in a downlink grant;
• means for transmitting the data over the first set of resources based at least in part on a first modulation scheme;
• and
• transmitting the at least one pilot over the second set of resources based at least in part on a second modulation scheme, wherein the at least one pilot is based at least in part on the sequence.

A non-transitory computer-readable medium for wireless communications by an apparatus, comprising:

• instructions that, when executed by at least one processor, cause the apparatus to:
• determine a first set of resources for transmission of data and a second set of resources for transmission of at least one pilot;
• determine a sequence for the transmission of the at least one pilot over the second set of resources based on at least one of a cell ID, a timing with respect to a slot boundary, a timing with respect to a subframe boundary, an absolute timing, a timing with respect to hopping instances, a rotation applied to a constellation, a cyclic prefix length, a UE ID, a cyclic shift, a repetition level, a modulation type, or an indication in a downlink grant;
• transmit the data over the first set of resources based at least in part on a first modulation scheme;
• and
• transmit the at least one pilot over the second set of resources based at least in part on a second modulation scheme, wherein the at least one pilot is based at least in part on the sequence.