Method of bandwidth allocation for transmitting mobile data and network device

1. A bandwidth allocation method performed by an optical line terminal (OLT) comprising:

receiving a cooperative transport interface (CTI) message including a traffic pattern corresponding to a CTI pattern identification (ID) from a distributed unit (DU) of a mobile network; and

allocating a bandwidth for transmitting mobile data based on a symbol included in the traffic pattern included in the CTI message,

wherein the traffic pattern is identified through a slot format indicator table comprising a plurality of traffic components comprising at least one of an uplink symbol, a downlink symbol, and a flexible symbol.

2. The bandwidth allocation method of claim 1 , wherein, in the traffic pattern, at least one of the uplink symbol, the downlink symbol, or the flexible symbol is disposed in a time slot of a predetermined length for each of a plurality of sub frames included in a radio frame.

3. The bandwidth allocation method of claim 1 , wherein a length of a slot included in a sub frame is determined differently according to subcarrier spacing.

4. The bandwidth allocation method of claim 1 , wherein the number of slots included in a sub frame is determined differently according to subcarrier spacing.

5. The bandwidth allocation method of claim 1 , wherein:

a boundary of a time slot of the traffic pattern is aligned in a radio access network (RAN), and

radio units (RUs) of the RAN process data during the same time slot at the same time.

6. The bandwidth allocation method of claim 1 , wherein:

the DU is configured to generate a CTI report at a specific time interval for a RU, and

the specific time interval corresponds to one or a plurality of time slots.

7. A bandwidth allocation method performed by an optical line terminal (OLT) comprising:

receiving a cooperative transport interface (CTI) message including a traffic pattern from a distributed unit (DU) of a mobile network; and

allocating a bandwidth for transmitting mobile data based on a symbol of a traffic pattern included in the CTI message,

wherein the traffic pattern is identified through a slot format indicator table comprising a plurality of traffic components comprising at least one of an uplink symbol, a downlink symbol, and a flexible symbol.

8. An optical line terminal (OLT) for allocating a bandwidth, the OLT comprising:

a processor,

wherein the processor is configured to:

receive a cooperative transport interface (CTI) message including a traffic pattern corresponding to a CTI pattern identification (ID) from a distributed unit (DU) of a mobile network, and allocate a bandwidth for transmitting mobile data based on a symbol included in the traffic pattern included in the CTI message,

wherein the traffic pattern is identified through a slot format indicator table comprising a plurality of traffic components comprising at least one of an uplink symbol, a downlink symbol, and a flexible symbol.

9. The OLT of claim 8 , wherein, in the traffic pattern, at least one of the uplink symbol, the downlink symbol, or the flexible symbol is disposed in a time slot of a predetermined length for each of a plurality of sub frames included in a radio frame.

10. The OLT of claim 8 , wherein a length of a slot included in a sub frame is determined differently according to subcarrier spacing.

11. The OLT of claim 8 , wherein the number of slots included in a sub frame is determined differently according to subcarrier spacing.

12. The OLT of claim 8 , wherein:

a boundary of a time slot of the traffic pattern is aligned in a radio access network (RAN), and

radio units (RUs) of the RAN process data during the same time slot at the same time.

13. The OLT of claim 8 , wherein:

the DU is configured to generate a CTI report at a specific time interval for a RU, and

the specific time interval corresponds to one or a plurality of time slots.