Configuring timing offsets in integrated access backhaul (iab) networks with multiple available timing modes

Abstract

Embodiments include methods for a first network node configured to operate as a child node of a second network node in an integrated access backhaul (IAB) network. Such methods include receiving, from the second network node, an indication (TΔ-mode) of a timing offset between the second network node's downlink (DL) transmission timing and the second network node's uplink (UL) reception timing. Such methods include determining the following based on the indication: a particular timing mode (Tmode) used for communication between the first and second network nodes, with Tmode being one of a plurality of available timing modes; and a particular timing offset (TΔ) applicable to Tmode. Such methods include adjusting the first network node's DL transmission timing based on TΔ. Other embodiments include complementary methods for a second network node configured to operate as a parent node, as well as network nodes configured to perform such methods.