Adaptive scalable numerology for high speed train scenarios

An apparatus for wireless communications, comprising:

• a memory storing computer-executable instructions;
• and
• at least one processor coupled with the memory and configured to execute the instructions to:
• receive a first transmission in a first time period using a first portion of bandwidth that transmits with a first numerology including a first subcarrier spacing and a first cyclic prefix ratio;
• receive an indication for a subsequent time period, wherein receiving the indication comprises decoding a downlink control information (DCI), wherein the DCI indicates which portion of bandwidth to receive, wherein a second portion of bandwidth transmits with a second numerology including a second subcarrier spacing and a second cyclic prefix ratio;
• and
• receive, in the subsequent time period, a second transmission using the second portion of bandwidth, wherein the second transmission is a retransmission of the first transmission, wherein the second subcarrier spacing is greater than the first subcarrier spacing or the second cyclic prefix ratio is greater than the first cyclic prefix ratio, or both.

An apparatus for resource adaptation for wireless communications, comprising:

• means for receiving a first transmission in a first time period using a first portion of bandwidth that transmits with a first numerology including a first subcarrier spacing and a first cyclic prefix ratio;
• means for receiving an indication for a subsequent time period, wherein receiving the indication comprises decoding a downlink control information (DCI), wherein the DCI indicates which portion of bandwidth to receive, wherein a second portion of bandwidth transmits with a second numerology including a second subcarrier spacing and a second cyclic prefix ratio;
• and
• means for receiving, in the subsequent time period, a second transmission using the second portion of bandwidth, wherein the second transmission is a retransmission of the first transmission, wherein the second subcarrier spacing is greater than the first subcarrier spacing or the second cyclic prefix ratio is greater than the first cyclic prefix ratio, or both.

A non-transitory computer-readable medium storing computer-executable instructions to:

• receive a first transmission in a first time period using a first portion of bandwidth that transmits with a first numerology including a first subcarrier spacing and a first cyclic prefix ratio;
• receive an indication for a subsequent time period, wherein receiving the indication comprises decoding a downlink control information (DCI), wherein the DCI indicates which portion of bandwidth to receive, wherein a second portion of bandwidth transmits with a second numerology including a second subcarrier spacing and a second cyclic prefix ratio;
• and
• receive, in the subsequent time period, a second transmission using the second portion of bandwidth, wherein the second transmission is a retransmission of the first transmission, wherein the second subcarrier spacing is greater than the first subcarrier spacing or the second cyclic prefix ratio is greater than the first cyclic prefix ratio, or both.