Propagation delay compensation for time sensitive networking
A system, method and apparatus for mobile communications including time sensitive communications is provided. A user equipment (UE) receives a medium access control (MAC) control element comprising a value for calculating a propagation delay (PD) compensation. The UE determines a first timing advance (TA) based on matching a value associated with the first TA with one or more first defined values. The UE determines a PD compensation based on the value. The UE performs a timing synchronization based on the PD compensation and determines an uplink timing based on the first TA. The UE then transmits at least one of an uplink signal or an uplink channel based on the determined timing synchronization and the determined uplink timing.
1 . A method for a user equipment (UE) configured to perform time sensitive networking (TSN) communications, the method comprising: receiving, from a base station, a radio resource control (RRC) message including at least reference timing information and one or more configuration parameters indicating whether the UE is enabled or disabled for performing a propagation delay (PD) compensation for a timing synchronization; receiving, from the base station, a timing advance (TA) medium access control (MAC) control element (CE) including a TA command; determining the PD compensation based on the TA command and the one or more configuration parameters; and
determining an uplink timing for at least one of an uplink signal or an uplink channel based on the TA command.
2 . The method of claim 1 , wherein the reference timing information is based on a grand master clock.
3 . The method of claim 1 , wherein: the RRC message is transmitted via dedicated signaling.
4 . The method of claim 1 , wherein: the RRC message is a DL information Transfer message used for downlink transfer of Non-access Stratum (NAS) dedicated information.
5 . A user equipment (UE) configured to perform time sensitive networking (TSN) communications, the UE comprising: a receiving circuitry configured to: receive, from a base station, a radio resource control (RRC) message including at least reference timing information and one or more configuration parameters indicating whether the UE is enabled or disabled for performing a propagation delay (PD) compensation for a timing synchronization; and receive, from the base station, a timing advance (TA) medium access control (MAC) control element (CE) including a TA command; and a determining circuitry configured to: determine the PD compensation based on the TA command and the one or more configuration parameters; and determine an uplink timing for at least one of an uplink signal or an uplink channel based on the TA command.
6 . A method for a base station configured to perform time sensitive networking (TSN) communications, the method comprising: transmitting, to a user equipment (UE), a radio resource control (RRC) message including at least reference timing information and one or more configuration parameters indicating whether the UE is enabled or disabled for performing propagation delay (PD) compensation for a timing synchronization; and transmitting, to the UE, a timing advance (TA) medium access control (MAC) control element (CE) including a TA command, the TA command being used by the UE to determine the PD compensation and an uplink timing for at least one of an uplink signal or an uplink channel.
7 . The method of claim 6 , wherein: the reference timing information is based on a grand master clock.
8 . The method of claim 6 , wherein: the RRC message is transmitted via dedicated signaling.
9 . The method of claim 6 , wherein: the RRC message is a DL information Transfer message used for the downlink transfer of Non-access Stratum (NAS) dedicated information.
10 . A base station configured to perform time sensitive networking (TSN) communications, the base station comprising: a transmitting circuitry configured to: transmit, to a user equipment (UE), a radio resource control (RRC) message including at least reference timing information and one or more configuration parameters indicating whether the UE is enabled or disabled for performing propagation delay (PD) compensation for a timing synchronization; and transmit, to the UE, a timing advance (TA) medium access control (MAC) control element (CE) including a TA command, the TA command being used by the UE to determine the PD compensation and an uplink timing for at least one of an uplink signal or an uplink channel.