Wireless-core converged user plane device in communication system, and operating method

1 . A method performed by a user plane network node in a communication system, the method comprising:

obtaining information on a packet processing rule from a control plane network function;

receiving an internet protocol (IP) packet via a data network, the IP packet including outside quality-of-service (QoS) information for the IP packet, the outside QoS information indicating a QoS between the user plane network node and a source node of an IP flow corresponding to the IP packet;

identifying the outside QoS information in the IP packet based on extraction information included in the information on the packet processing rule;

generating a QoS requirement for the IP flow corresponding to the IP packet, based on the packet processing rule and the outside QoS information; and

allocating a resource for the IP flow, based on the QoS requirement.

2 . The method of claim 1 ,

wherein the extraction information comprises information required to obtain the outside QoS information from the IP packet.

3 . The method of claim 1 , wherein the allocating of the resource for the IP flow comprises:

identifying a data radio bearer (DRB) corresponding to the IP flow, based on the QoS requirement; and

transmitting the IP packet to a baseband function (BBF) through the identified DRB, and

wherein the IP packet comprises information indicating whether the DRB corresponding to the IP flow has been changed.

4 . The method of claim 1 ,

wherein the information on the packet processing rule comprises QoS characteristic information for the IP flow, and

wherein the QoS requirement is generated based on the QoS characteristic information and the outside QoS information.

5 . The method of claim 4 , wherein the QoS characteristic information indicates a resource type, a packet delay budget, a packet error rate, a target data rate, or a QoS characteristic index, which is required for the IP flow.

6 . The method of claim 1 , wherein the outside QoS information comprises at least one of a hop count or timestamp included in a header of the IP packet.

7 . The method of claim 1 , wherein the QoS requirement indicates a resource allocation priority in a radio interval, and a delay, a bit rate, and an error rate required for the IP flow in the radio interval.

8 . The method of claim 1 ,

wherein the resource is allocated based on the QoS requirement and QoS information for the IP flow in a radio interval, and

wherein the QoS information in the radio interval comprises at least one of a queue status for the IP flow, resource allocation information of a medium access control (MAC) layer, or a packet error rate.

9 . The method of claim 1 , comprising:

identifying whether the IP packet is included in the IP flow; and

in case that the IP packet is included in the IP flow, allocating a resource for the IP packet, based on the QoS requirement.

10 . The method of claim 9 , wherein the packet processing rule comprises packet detection information including an IP address of a terminal, a network instance, core network tunnel information, an application ID, a QoS flow ID, and Ethernet PDU session information, and

wherein whether the IP packet is included in the IP flow is determined based on the packet detection information.

11 . A user plane network node in a communication system, the user plane network node comprising:

at least one transceiver; and

at least one processor coupled with the at least one transceiver and configured to:

obtain information on a packet processing rule from a control plane network function,

receive an internet protocol (IP) packet via a data network, the IP packet including outside quality-of-service (QoS) information for the IP packet, the outside QoS information indicating a QoS between the user plane network node and a source node of an IP flow corresponding to the IP packet,

identify the outside QoS information in the IP packet based on extraction information included in the information on the packet processing rule,

generate a QoS requirement for the IP flow corresponding to the IP packet, based on the packet processing rule and the outside QoS information, and

allocate a resource for the IP flow, based on the QoS requirement.

12 . The user plane network node of claim 11 ,

wherein the extraction information comprises information required to obtain the outside QoS information from the IP packet,

wherein the outside QoS information comprises at least one of a hop count or timestamp included in a header of the IP packet,

wherein the QoS requirement indicates a resource allocation priority in a radio interval, and a delay, a bit rate, and an error rate required for the IP flow in the radio interval,

wherein the resource is allocated based on the QoS requirement and QoS information for the IP flow in a radio interval, and

wherein the QoS information in the radio interval comprises at least one of a queue status for the IP flow, resource allocation information of a medium access control (MAC) layer, or a packet error rate.

13 . The user plane network node of claim 11 , wherein the at least one processor is configured to:

identify a data radio bearer (DRB) corresponding to the IP flow, based on the QoS requirement; and

transmit the IP packet to a baseband function (BBF) through the identified DRB, and

wherein the IP packet comprises information indicating whether the DRB corresponding to the IP flow has been changed.

14 . The user plane network node of claim 11 , wherein the information on the packet processing rule comprises QoS characteristic information for the IP flow,

wherein the QoS requirement is generated based on the QoS characteristic information and the outside QoS information, and

wherein the QoS characteristic information indicates a resource type, a packet delay budget, a packet error rate, a target data rate, or a QoS characteristic index, which is required for the IP flow.

15 . The user plane network node of claim 11 , wherein the at least one processor is configured to:

identify whether the IP packet is included in the IP flow; and

in case that the IP packet is included in the IP flow, allocate a resource for the IP packet, based on the QoS requirement,

wherein the packet processing rule comprises packet detection information including an IP address of a terminal, a network instance, core network tunnel information, an application ID, a QoS flow ID, and Ethernet PDU session information, and

wherein whether the IP packet is included in the IP flow is determined based on the packet detection information.