Network apparatus and method therefor

1. A first network node to be located in a radio access network or a core network, comprising:

at least one memory; and

at least one processor coupled to the at least one memory and configured to:

transmit a first protocol data unit of an encapsulation protocol to a second network node located in the radio access network or the core network, or receive the first protocol data unit of the encapsulation protocol from the second network node located in the radio access network or the core network, wherein the first protocol data unit contains a payload containing a user packet originated from or destined for a radio terminal;

incorporate edge computing related control information into a header part of a second protocol data unit of the same encapsulation protocol; and

transmit, to an edge computing server that is different from the second network node and located outside both the radio access network and the core network, the second protocol data unit whose header part contains the edge computing related control information, wherein

the encapsulation protocol is a General Packet Radio Service (GPRS) Tunneling Protocol for User Plane (GTP-U), and

the header part includes:

a message type field indicating that the protocol data unit is a protocol data unit carrying a user packet;

a next extension header type field indicating that the header part includes a first extension header containing the edge computing related control information; and

the first extension header containing the edge computing related control information.

2. The first network node according to claim 1 , wherein the edge computing server is configured to provide one or both of computing resources and storage resources to a service or an application directed to the radio terminal through the radio access network.

3. The first network node according to claim 1 , wherein the edge computing related control information includes at least one of: radio interface quality; cell throughput; backhaul throughput; information about a service used by the radio terminal; or priority information of the radio terminal.

4. A method for a first network node to be located in a radio access network or a core network, the method comprising:

transmitting a first protocol data unit of an encapsulation protocol to a second network node located in the radio access network or the core network, or receiving the first protocol data unit of the encapsulation protocol from the second network node located in the radio access network or the core network, wherein the first protocol data unit contains a payload containing a user packet originated from or destined for a radio terminal;

incorporating edge computing related control information into a header part of a second protocol data unit of the same encapsulation protocol; and

transmitting, to an edge computing server that is different from the second network node and located outside both the radio access network and the core network, the second protocol data unit whose header part contains the edge computing related control information, wherein

the encapsulation protocol is a General Packet Radio Service (GPRS) Tunneling Protocol for User Plane (GTP-U), and

the header part includes:

a message type field indicating that the protocol data unit is a protocol data unit carrying a user packet;

a next extension header type field indicating that the header part includes a first extension header containing the edge computing related control information; and

the first extension header containing the edge computing related control information.

5. The method according to claim 4 , wherein the edge computing server is configured to provide one or both of computing resources and storage resources to a service or an application directed to the radio terminal through the radio access network.

6. The method according to claim 4 , wherein the edge computing related control information includes at least one of: radio interface quality; cell throughput; backhaul throughput; information about a service used by the radio terminal; or priority information of the radio terminal.

7. A non-transitory computer readable medium storing a program for causing a computer to perform a method for a first network node to be located in a radio access network or a core network, wherein

the method comprises:

transmitting a first protocol data unit of an encapsulation protocol to a second network node located in the radio access network or the core network, or receiving the first protocol data unit of the encapsulation protocol from the second network node located in the radio access network or the core network, wherein the first protocol data unit contains a payload containing a user packet originated from or destined for a radio terminal;

incorporating edge computing related control information into a header part of a second protocol data unit of the same encapsulation protocol; and

transmitting, to an edge computing server that is different from the second network node and located outside both the radio access network and the core network, the second protocol data unit whose header part contains the edge computing related control information, wherein

the encapsulation protocol is a General Packet Radio Service (GPRS) Tunneling Protocol for User Plane (GTP-U), and

the header part includes:

a message type field indicating that the protocol data unit is a protocol data unit carrying a user packet;

a next extension header type field indicating that the header part includes a first extension header containing the edge computing related control information; and

the first extension header containing the edge computing related control information.

8. The non-transitory computer readable medium according to claim 7 , wherein the edge computing server is configured to provide one or both of computing resources and storage resources to a service or an application directed to the radio terminal through the radio access network.