Gap enhancements in wireless networks

A method of wireless communication at a first integrated access backhaul (IAB) node within an IAB network, comprising:

• communicating with a second IAB node over a first link and with a set of one or more child nodes over respective second links, the second IAB node being a parent IAB node of the first IAB node;
• receiving a guard symbols provided message from the second IAB node indicating a number of guard symbols provided by the second IAB node at a transition between a first set of resources allocated for communication between the first IAB node and the second IAB node over the first link and a second set of resources allocated for communication between the first IAB node and the set of one or more child nodes over the respective second links;
• and
• identifying a subcarrier spacing associated with the number of guard symbols, the identifying the subcarrier spacing including:
• receiving an indication of the subcarrier spacing via a first radio resource control (RRC) message from an IAB donor node.

A method of wireless communication at a first integrated access backhaul (IAB) node within an IAB network, comprising:

• communicating with a second IAB node over a first link utilizing a first subcarrier spacing;
• communicating with a set of one or more child nodes over respective second links utilizing a second subcarrier spacing, wherein the first subcarrier spacing is different than the second subcarrier spacing;
• generating a first guard symbols desired message requesting the second IAB node provide a first number of guard symbols at an intra-slot transition between a first set of resources allocated for communication between the first IAB node and the second IAB node over the first link and a second set of resources allocated for communication between the first IAB node and the set of one or more child nodes over the respective second links, wherein the first set of resources and the second set of resources are within a single slot;
• transmitting the first guard symbols desired message to the second IAB node;
• and
• identifying a transition between the first IAB node communicating on the first link and the first IAB node communicating on the respective second links as one of the intra-slot transition or an inter-slot transition using a reference subcarrier spacing, wherein the reference subcarrier spacing comprises one of the first subcarrier spacing or the second subcarrier spacing.

A method of wireless communication at a first integrated access backhaul (IAB) node within an IAB network, comprising:

• communicating with a second IAB node on a first link utilizing a first subcarrier spacing, wherein the second IAB node communicates with a set of one or more child nodes on respective second links utilizing a second subcarrier spacing, wherein the first subcarrier spacing is different than the second subcarrier spacing;
• identifying a transition between the second IAB node communicating on the first link and the second IAB node communicating on the respective second links as one of an intra-slot transition or an inter-slot transition using a reference subcarrier spacing, wherein the reference subcarrier spacing comprises one of the first subcarrier spacing and the second subcarrier spacing;
• and
• transmitting a first guard symbols provided message to the second IAB node indicating a first number of guard symbols provided by the first IAB node at the intra-slot transition between a first set of resources allocated for communication between the first IAB node and the second IAB node over the first link and a second set of resources allocated for communication between the second IAB node and the set of one or more child nodes of the second IAB node over the respective second links, wherein the first set of resources and the second set of resources are within a single slot.