Transmission of reference signal on non-contiguous clusters of resources

An apparatus for wireless communication, comprising:

• means for generating a demodulation reference signal (RS) sequence having a length equal to a total size of assigned non-contiguous clusters of subcarriers of a plurality of resource blocks of a slot of a subframe;
• means for clustering a first set of contiguous subcarriers to generate a first cluster of subcarriers;
• means for clustering a second set of contiguous subcarriers to generate a second cluster of subcarriers, at least one subcarrier being defined between the first set of contiguous subcarriers and the second set of contiguous subcarriers, the assigned non-contiguous clusters comprising at least the first cluster and the second cluster, a number of contiguous subcarriers of each cluster being equal to or greater than a number of symbols of each segment;
• means for partitioning the demodulation RS sequence into segments, one segment for each cluster of the assigned non-contiguous clusters;
• and
• means for transmitting a demodulation RS associated with the demodulation RS sequence segments on the assigned non-contiguous clusters.

A non-transitory computer-readable medium having program code recorded thereon, the program code comprising:

• program code to generate a demodulation reference signal (RS) sequence having a length equal to a total size of assigned non-contiguous clusters of subcarriers of a plurality of resource blocks of a slot of a subframe;
• program code to cluster a first set of contiguous subcarriers to generate a first cluster of subcarriers;
• program code to cluster a second set of contiguous subcarriers to generate a second cluster of subcarriers, at least one subcarrier being defined between the first set of contiguous subcarriers and the second set of contiguous subcarriers, the assigned non-contiguous clusters comprising at least the first cluster and the second cluster, a number of contiguous subcarriers of each cluster being equal to or greater than a number of symbols of each segment;
• program code to partition the demodulation RS sequence into segments, one segment for each cluster of the assigned non-contiguous clusters;
• and
• program code to transmit a demodulation RS associated with the demodulation RS sequence segments on the assigned non-contiguous clusters.

An apparatus for wireless communication, comprising:

• a memory;
• and
• at least one processor coupled to the memory, the at least one processor being configured:
• to generate a demodulation reference signal (RS) sequence having a length equal to a total size of assigned non-contiguous clusters of subcarriers of a plurality of resource blocks of a slot of a subframe;
• to cluster a first set of contiguous subcarriers to generate a first cluster of subcarriers;
• to cluster a second set of contiguous subcarriers to generate a second cluster of subcarriers, at least one subcarrier being defined between the first set of contiguous subcarriers and the second set of contiguous subcarriers, the assigned non-contiguous clusters comprising at least the first cluster and the second cluster, a number of contiguous subcarriers of each cluster being equal to or greater than a number of symbols of each segment;
• to partition the demodulation RS sequence into segments, one segment for each cluster of the assigned non-contiguous clusters;
• and
• to transmit a demodulation RS associated with the demodulation RS sequence segments on the assigned non-contiguous clusters.