RRC timer for layer 2 UE-to-network relay

An apparatus for wireless communication at a network entity, comprising:

• memory;
• and
• one or more processors coupled to the memory, the one or more processors configured to cause the network entity to:
• output a message to a first user equipment (UE), wherein the message indicates a path switch between two indirect paths between the network entity and the first UE, wherein the path switch between the two indirect paths is from a first indirect path between the network entity and the first UE via a second UE as a relay to a second indirect path between the network entity and the first UE via a third UE as a target relay;
• and
• indicate a timer associated with the path switch between the two indirect paths.

An apparatus for wireless communication at a first user equipment (UE), comprising:

• memory;
• and
• one or more processors coupled to the memory, the one or more processors configured to cause the first UE to:
• receive an indication of one or more timers associated with one of a radio resource control (RRC) connection establishment procedure or an RRC connection re-establishment procedure with a network entity via a relay;
• transmit a request associated with an RRC connection to a second UE to be relayed to the network entity;
• and
• monitor for a response from the network entity based on the one or more timers associated with the one of the RRC connection establishment procedure or the RRC connection re-establishment procedure via the second UE as the relay.

An apparatus for wireless communication at a network entity, comprising:

• memory;
• and
• one or more processors coupled to the memory, the one or more processors configured to cause the network entity to:
• output system information that indicates one or more timers associated with one of a radio resource control (RRC) connection establishment procedure or an RRC connection re-establishment procedure of a first user equipment (UE) via a relay;
• and
• obtain a relayed request associated with an RRC connection for the first UE.

A method of wireless communication at a first user equipment (UE), comprising:

• receiving a message that indicates a path switch for the first UE between two indirect paths to a network entity and a timer associated with the path switch, wherein the path switch for the first UE is from a first indirect path to the network entity via a second UE as a relay to a second indirect path to the network entity via a third UE as the relay;
• starting the timer in response to reception of the message that indicates the path switch;
• and
• stopping the timer in response to at least one of:
• successfully sending a radio resource control (RRC) reconfiguration complete message,
• receiving a radio link control (RLC) acknowledgement from the third UE as a target relay,
• a successful completion of an SRBO configuration,
• receiving a first acknowledgment of an RRC reconfiguration complete message, or
• receiving a second acknowledgment of the RRC reconfiguration complete message from the network entity.

A method of wireless communication at a first user equipment (UE), comprising:

• receiving an indication of one or more timers associated with one of a radio resource control (RRC) connection establishment procedure or an RRC connection re-establishment procedure with a network entity via a relay;
• transmitting a request associated with an RRC connection to a second UE to be relayed to the network entity;
• and
• monitoring for a response from the network entity based on the one or more timers associated with the one of the RRC connection establishment procedure or the RRC connection re-establishment procedure via the second UE as the relay.

A non-transitory computer-readable storage medium storing computer executable code for wireless communication at a first user equipment (UE), the code when executed by one or more processors causes the first UE to:

• receive a message that indicates a path switch for the first UE between two indirect paths to a network entity and a timer associated with the path switch, wherein the path switch for the first UE is from a first indirect path to the network entity via a second UE as a relay to a second indirect path to the network entity via a third UE as the relay;
• start the timer in response to reception of the message that indicates the path switch;
• and
• stop the timer in response to at least one of:
• a successful transmission of a radio resource control (RRC) reconfiguration complete message,
• reception of a radio link control (RLC) acknowledgement from the third UE as a target relay,
• a successful completion of an SRBO configuration,
• reception of a first acknowledgment of an RRC reconfiguration complete message, or
• reception of a second acknowledgment of the RRC reconfiguration complete message from the network entity.

A non-transitory computer-readable storage medium storing computer executable code for wireless communication at a first user equipment (UE), the code when executed by one or more processors causes the first UE to:

• receive an indication of one or more timers associated with one of a radio resource control (RRC) connection establishment procedure or an RRC connection re-establishment procedure with a network entity via a relay;
• transmit a request associated with an RRC connection to a second UE to be relayed to the network entity;
• and
• monitor for a response from the network entity based on the one or more timers associated with the one of the RRC connection establishment procedure or the RRC connection re-establishment procedure via the second UE as the relay.

An apparatus for wireless communication at a first user equipment (UE), comprising:

• means for receiving a message that indicates a path switch for the first UE between two indirect paths to a network entity and a timer associated with the path switch, wherein the path switch for the first UE is from a first indirect path to the network entity via a second UE as a relay to a second indirect path to the network entity via a third UE as the relay;
• means for starting the timer in response to reception of the message that indicates the path switch;
• and
• means for stopping the timer in response to at least one of:
• successfully sending a radio resource control (RRC) reconfiguration complete message,
• receiving a radio link control (RLC) acknowledgement from the third UE as a target relay,
• a successful completion of an SRBO configuration,
• receiving a first acknowledgment of an RRC reconfiguration complete message, or
• receiving a second acknowledgment of the RRC reconfiguration complete message from the network entity.

An apparatus for wireless communication at a first user equipment (UE), comprising:

• means for receiving an indication of one or more timers associated with one of a radio resource control (RRC) connection establishment procedure or an RRC connection re-establishment procedure with a network entity via a relay;
• means for transmitting a request associated with an RRC connection to a second UE to be relayed to the network entity;
• and
• means for monitoring for a response from the network entity based on the one or more timers associated with the one of the RRC connection establishment procedure or the RRC connection re-establishment procedure via the second UE as the relay.

An apparatus for wireless communication at a first user equipment (UE), comprising:

• memory;
• and
• one or more processors coupled to the memory and configured to cause the first UE to:
• receive, in system information from a network entity, an indication of one or more timers associated with one of a radio resource control (RRC) connection establishment procedure or an RRC connection re-establishment procedure with the network entity via a relay;
• transmit a request associated with an RRC connection to a second UE to be relayed via the relay to the network entity;
• start the one or more timers based on transmission of the request from the first UE to the network entity via the relay;
• monitor for a response from the network entity based on the one or more timers associated with the one of the RRC connection establishment procedure or the RRC connection re-establishment procedure via the second UE as the relay;
• receive an RRC reconfiguration message that indicates a path switch and a timer associated with the path switch, wherein the path switch for the first UE is from a first indirect path to the network entity via the second UE as the relay to a second indirect path to the network entity via a third UE as the relay;
• start the timer associated with the path switch in response to reception of the RRC reconfiguration message that indicates the path switch;
• and
• stop the timer associated with the path switch in response to at least one of:
• a successful transmission of an RRC reconfiguration complete message,
• reception of a radio link control (RLC) acknowledgement from the third UE as a target relay,
• a successful completion of an SRBO configuration, reception of a first acknowledgment of the RRC reconfiguration complete message, or
• reception of a second acknowledgment of the RRC reconfiguration complete message from the network entity.

An apparatus for wireless communication at a network entity, comprising:

• memory;
• and
• one or more processors coupled to the memory and configured to cause the network entity to:
• transmit system information that indicates one or more timers associated with one of a radio resource control (RRC) connection establishment procedure or an RRC connection re-establishment procedure of a first user equipment (UE) via a relay;
• receive a request associated with an RRC connection from the first UE via a second UE as the relay for the first UE;
• and
• transmit an RRC reconfiguration message that indicates a path switch and a timer associated with the path switch, wherein the path switch for the first UE is from a first indirect path to the network entity via the second UE as the relay to a second indirect path to the network entity via a third UE as the relay.