Apparatus and method for synchronization using wireless communication network in wireless communication system
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as long term evolution (LTE). According to various embodiments of the disclosure, an operating method of a user plane function (UPF) in a wireless communication system and an apparatus therefor are provided. The operating method includes receiving a first parameter for clock synchronization from a base station, and performing the clock synchronization with a neighboring network system using the received first parameter and a second parameter. The first parameter may include information relating to a link delay time between the neighboring network system and a network system comprising the UPF, and a residence time of a terminal, a base station and the UPF of the network system comprising the UPF, and the second parameter may include information relating to a backhaul delay time between the base station and the UPF.
1. A method performed by a base station in a wireless communication system, the method comprising:
receiving, from a session management function (SMF), a message including at least one quality of service (QoS) parameter associated with time sensitive networking (TSN); and
scheduling a packet based on the message,
wherein the at least one QoS parameter includes a parameter of a loss tolerance, and
wherein the parameter of the loss tolerance is associated with a maximum number of consecutive failures.
2. The method of claim 1 , wherein the scheduling of the packet based on the message comprises:
calculating a residence time of the packet based on a pre-stored delay time value; and
scheduling based on a priority of the packet.
3. The method of claim 1 , wherein the scheduling of the packet comprises, based on identifying that the scheduling cannot be performed within a pre-stored delay time value, dropping the packet.
4. The method of claim 1 , wherein the scheduling of the packet comprises:
based on identifying that loss of consecutive downlink packets exceeding the loss tolerance,
increasing a priority; and
rescheduling the packet.
5. The method of claim 1 ,
wherein the scheduling is performed based on a pre-stored delay time value,
wherein the pre-stored delay time value includes a backhaul delay time value, and
wherein the backhaul delay time value includes a target delay time value, with a minimum value of values measured through a backhaul delay trace.
6. The method of claim 1 ,
wherein the scheduling is performed based on a pre-stored delay time value,
wherein the pre-stored delay time value includes an air delay time value, and
wherein the air delay time value is determined to a greater value of an uplink air delay time value and a downlink air delay time value.
7. The method of claim 1 , further comprising:
transmitting a QoS notification message to the SMF,
wherein the QoS notification message includes a parameter indicating an air delay value time.
8. The method of claim 1 ,
wherein the at least one QoS parameter is received from the SMF via an access and mobility management function (AMF) based on a protocol data unit (PDU) session modification procedure, and
wherein the at least one QoS parameter is included in N2 session management (SM) information.
9. The method of claim 1 , wherein the parameter of the loss tolerance is provided by a policy and control function (PCF).
10. A base station in a wireless communication system, the base station comprising:
a transceiver; and
at least one processor operably coupled to the transceiver and configured to:
receive, from a session management function (SMF), a message including at least one quality of service (QoS) parameter associated with time sensitive networking (TSN), and
schedule a packet based on the message and a pre-stored delay time value,
wherein the at least one QoS parameter includes a parameter of a loss tolerance, and
wherein the parameter of the loss tolerance is associated with a maximum number of consecutive failures.
11. The base station of claim 10 , wherein the at least one processor is, to schedule the packet, further configured to:
calculate a residence time of the packet based on a pre-stored delay time value; and
schedule based on a priority of the packet.
12. The base station of claim 10 , wherein the at least one processor is, to schedule the packet, further configured to:
based on identifying that the scheduling cannot be performed within a pre-stored delay time value, drop the packet.
13. The base station of claim 10 , wherein the at least one processor is, to schedule the packet, further configured to:
based on identifying that loss of a consecutive downlink packets exceeding the loss tolerance,
increase a priority, and
reschedule the packet.
14. The base station of claim 10 ,
wherein the scheduling is performed based on the pre-stored delay time value,
wherein the pre-stored delay time value includes a backhaul delay time value, and
wherein the backhaul delay time value includes a target delay time value, with a minimum value of values measured through backhaul delay trace.
15. The base station of claim 10 ,
wherein the scheduling is performed based on the pre-stored delay time value,
wherein the pre-stored delay time value includes an air delay time value, and
wherein the air delay time value is determined to a greater value of an uplink air delay time value and a downlink air delay time value.
16. The base station of claim 10 , wherein the at least on processor is further configured to:
transmit a QoS notification message to the SMF, and
wherein the QoS notification message includes a parameter indicating an air delay value time.
17. The base station of claim 10 , wherein the at least one processor is further configured to:
control the transceiver to receive a first parameter for clock synchronization; and
perform the clock synchronization with a neighboring network system based on the received first parameter and a second parameter.
18. The base station of claim 17 , wherein, the at least one processor is further configured to:
control the transceiver to receive a third parameter for the clock synchronization; and
perform the clock synchronization with the neighboring network system based on the received third parameter and a fourth parameter.
19. The base station of claim 10 ,
wherein the at least one QoS parameter is received from the SMF via an access and mobility management function (AMF) based on a protocol data unit (PDU) session modification procedure, and
wherein the at least one QoS parameter is included in N2 session management (SM) information.
20. The base station of claim 10 , wherein the parameter of the loss tolerance is provided by a policy and control function (PCF).
21. A method performed by a session management function (SMF), in a wireless communication system, the method comprising:
obtaining at least one quality of service (QoS) parameter associated with time sensitive networking (TSN); and
transmitting, to a base station, a message including the at least one QoS parameter,
wherein the at least one QoS parameter includes a parameter of a loss tolerance, and
wherein the parameter of the loss tolerance is associated with a maximum number of consecutive failures.
22. The method of claim 21 ,
wherein the at least one QoS parameter is received from the SMF via an access and mobility management function (AMF) based on a protocol data unit (PDU) session modification procedure, and
wherein the at least one QoS parameter is included in N2 session management (SM) information.
23. The method of claim 21 , wherein the parameter of the loss tolerance is provided by a policy and control function (PCF).