Multi-hop communication techniques

A method of wireless communication, comprising:

• receiving, by a second wireless device of a multi-hop communication link, a message indicating data from a first wireless device of the multi-hop communication link to be transmitted as a scheduled downlink data transmission to the second wireless device is unavailable;
• decoding, by the second wireless device, the message;
• taking one or more actions, by the second wireless device, based at least in part upon the decoded message, and
• wherein the message is received using downlink resources scheduled for downlink transmission of the data corresponding to a scheduled uplink data transmission that failed.

An apparatus configured for wireless communication, the apparatus comprising:

• a memory;
• and
• at least one processor coupled to the memory, wherein the at least one processor is configured to:
• determine that a scheduled uplink data transmission comprising data to be transmitted from a first wireless device of a multi-hop communication link to a second wireless device of the multi-hop communication link has failed;
• transmit a message indicating the data is unavailable as a downlink data transmission to the second wireless device, and
• wherein the message is transmitted using downlink resource scheduled for downlink transmission of the data from the failed scheduled uplink data transmission.

An apparatus configured for wireless communication, the apparatus comprising:

• a memory;
• and
• at least one processor coupled to the memory, wherein the at least one processor is configured to:
• receive, by a second wireless device of a multi-hop communication link, a message indicating data from a first wireless device of the multi-hop communication link to be transmitted as a scheduled downlink data transmission to the second wireless device is unavailable;
• decode, by the second wireless device, the message;
• take one or more actions, by the second wireless device, based at least in part upon the decoded message, and
• wherein the message is received using downlink resources scheduled for downlink transmission of the data corresponding to a scheduled uplink data transmission that failed.