Methods, systems, and devices for wireless communications are described. A first wireless device may receive, from a second wireless device, a first downlink grant scheduling a first downlink resource for a delay-sensitive packet. The first wireless device may monitor the first downlink resource for the delay-sensitive packet from the second wireless device and identify a first routing identifier indicating at least a third wireless device in the first downlink grant. The first wireless device may transmit, to the third wireless device, a second downlink grant scheduling a second downlink resource and including a second routing identifier based on the first routing identifier. In some cases, the first wireless node may send a scheduling grant to the third wireless device for transmission of a delay-sensitive packet for a next hop before completion of processing of the packet received from the second wireless device.

A method and device are disclosed from the perspective of a relay UE. In one embodiment, the relay UE establishes a Radio Resource Control (RRC) connection with a network node. The relay UE also transmits a Layer 2. Identity (L2ID) of the relay UE to the network node. Furthermore, the relay UE receives a local UE Identity (ID) for a remote UE and a L2ID of the remote UE from the network node. In addition, the relay UE establishes a PC5 connection with the remote UE. The relay UE further receives a first RRC Reconfiguration Complete message from the remote UE. The relay UE also transmits the first RRC Reconfiguration Complete message to the network node, wherein the first RRC Reconfiguration Complete message is included in an adaptation layer Protocol Data Unit (PDU) for transmission and the local UE ID for the remote UE is included in a header of the adaptation layer PDU.

A method and device are disclosed from the perspective of a relay UE. In one embodiment, the relay UE establishes a Radio Resource Control (RRC) connection with a network node. The relay UE also transmits a Layer 2. Identity (L2ID) of the relay UE to the network node. Furthermore, the relay UE receives a local UE Identity (ID) for a remote UE and a L2ID of the remote UE from the network node. In addition, the relay UE establishes a PC5 connection with the remote UE. The relay UE further receives a first RRC Reconfiguration Complete message from the remote UE. The relay UE also transmits the first RRC Reconfiguration Complete message to the network node, wherein the first RRC Reconfiguration Complete message is included in an adaptation layer Protocol Data Unit (PDU) for transmission and the local UE ID for the remote UE is included in a header of the adaptation layer PDU.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured for contention-based forwarding (CBF) to relay a message toward a destination. The UE may receive signaling indicating a configuration for CBF. The CBF configuration may be associated with a maximum communication range for CBF signaling. The UE may receive a message to relay toward the destination using CBF. The message may include a first indication of a dynamic communication range for the CBF which may be less than or equal to the maximum communication range. The UE may determine a timer value to retransmit the message based on the dynamic communication range. When a timer set to the timer value expires, the UE may retransmit the message to nearby stations and include an indication of the dynamic communication range with the message.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured for contention-based forwarding (CBF) to relay a message toward a destination. The UE may receive signaling indicating a configuration for CBF. The CBF configuration may be associated with a maximum communication range for CBF signaling. The UE may receive a message to relay toward the destination using CBF. The message may include a first indication of a dynamic communication range for the CBF which may be less than or equal to the maximum communication range. The UE may determine a timer value to retransmit the message based on the dynamic communication range. When a timer set to the timer value expires, the UE may retransmit the message to nearby stations and include an indication of the dynamic communication range with the message.

An authorization and policy parameter configuration method, a terminal, and a network function are provided. The method is applied to a terminal and includes: sending terminal-to-terminal relay communication capability information and/or a terminal policy container to a first network function; and receiving an authorization and policy parameter for relay communication sent by a second network function, where the authorization and policy parameter for relay communication is generated based on the relay communication capability information and/or the terminal policy container.

An authorization and policy parameter configuration method, a terminal, and a network function are provided. The method is applied to a terminal and includes: sending terminal-to-terminal relay communication capability information and/or a terminal policy container to a first network function; and receiving an authorization and policy parameter for relay communication sent by a second network function, where the authorization and policy parameter for relay communication is generated based on the relay communication capability information and/or the terminal policy container.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a parent node may configure first and second backhaul radio link control (RLC) channels based on requests received from a first integrated access and backhaul (IAB) donor central unit (CU) and a second IAB donor CU, respectively. The parent node may select first and second logical channel identifiers for the first and second backhaul RLC channels, the second logical channel identifier being different from the first logical channel identifier, and may provide the first and second logical channel identifiers to the first IAB donor CU and the second IAB donor CU, respectively. The parent node may receive a packet including either the first logical channel identifier or the second logical channel identifier, and process the packet based on which of the first and second logical channel identifiers is included in the packet. Other aspects are provided.

A method performed by a first node. The first node operates in a communications network. The first node determines, based on a header of a packet, a first number of hops. The first number of hops are the hops the packet has to traverse in the communications network to reach a second node in the communications network. The header of the packet indicates a second number of hops between the second node and a third node in the communications network in a first path. The first node obtains a wired backhaul connection to a core network of the communications network from the third node. The first node then initiates routing the packet towards the second node based on the determined first number of hops.

A method performed by a first node. The first node operates in a communications network. The first node determines, based on a header of a packet, a first number of hops. The first number of hops are the hops the packet has to traverse in the communications network to reach a second node in the communications network. The header of the packet indicates a second number of hops between the second node and a third node in the communications network in a first path. The first node obtains a wired backhaul connection to a core network of the communications network from the third node. The first node then initiates routing the packet towards the second node based on the determined first number of hops.