Telematics communication unit and server for controlling same in next generation mobile communication system
A disclosure of the present specification provides a server for controlling a telematics communication unit (TCU) mounted in a vehicle in a next generation mobile communication system. The server may comprise: a transceiver unit; and a processor for controlling the transceiver unit. The processor may perform the steps of: receiving information of a first channel state between the TCU and a base station and information of a second channel state between the TCU and an electronic device in the vehicle; on the basis of the first and second channel state information, generating a first table based on data rates of downlink sections among the base station, the TCU, and the electronic device in the vehicle; and transmitting downlink data to the TCU through the base station on the basis of the first table.
1. A server comprising:
at least one transceiver;
at least one processor; and
at least one memory connected to the at least one processor and storing instruction that, based on being executed, cause the server to perform operations comprising:
receiving first channel state information between a Telematics Communication Unit (TCU) and a base station and second channel state information between the TCU and an electronic device in a vehicle;
receiving information on an available buffer size from the TCU;
generating a first table based on a data rate in a downlink period between the base station, the TCU, and the electronic device in the vehicle, based on the first channel state information and the second channel state information;
identifying a bottleneck period in the downlink period based on the information on the available buffer size; and
transmitting downlink data to the TCU through the base station based on the first table.
2. The server of claim 1 , wherein the operations further comprise: generating a third table based on a data rate in an uplink period between the base station, the TCU, the electronic device in the vehicle, based on the first channel state information and the second channel state information.
3. The server of claim 1 , wherein the operations further comprise: generating a second table based on a data rate according to a pair of a reception (Rx) antenna of the TCU and a transmission (Tx) antenna of the TCU.
4. The server of claim 1 , wherein the operations further comprise: reducing a data rate of the downlink data to resolve a bottleneck in the bottleneck period.
5. The server of claim 1 , wherein the first table comprises a transmission priority and a data rate of the downlink data.
6. A Telematics Communication Unit (TCU) comprising:
at least one transceiver;
at least one processor; and
at least one memory connected to the at least one processor and storing instructions that, based on being executed, cause the TCU to perform operations comprising:
generating a table based on a channel state with at least one electronic device in a vehicle;
calculating an available buffer size for transmitting data to the at least one electronic device in the vehicle;
transmitting information on the available buffer size to a server through a base station; and
identifying a bottleneck period in a downlink period between the base station, the TCU, and the at least one electronic device in the vehicle based on the information on the available buffer size.
7. The TCU of claim 6 , wherein the operations further comprise:
comparing the available buffer size with an expected residual data size in a buffer; and
re-calculating the available buffer size based on the comparison.
8. The TCU of claim 6 , wherein the operations further comprise: transmitting information on the channel state to the server through the base station.
9. The TCU of claim 6 , wherein the operations further comprise: identifying information on a reception antenna of the TCU for receiving downlink data from the base station and information on a transmission antenna for the TCU to transmit the downlink data to the at least one electronic device in the vehicle.
10. The TCU of claim 9 , wherein the operations further comprise: transmitting information on a pair of the reception antenna and the transmission antenna to the server through the base station.
11. The TCU of claim 6 , wherein the operations further comprise: transmitting a pilot signal to the at least one electronic device in the vehicle; and
receiving channel state information from the at least one electronic device in the vehicle.
12. The TCU of claim 6 , wherein the at least one transceiver comprises a Long-Term Evolution (LTE) transceiver, a 5G transceiver, or a Wireless Local Area Network (WLAN) transceiver.
13. The TCU of claim 12 , wherein the 5G transceiver comprises a first 5G transceiver using a sub-6 GHz band and a second 5G transceiver using mmWave.
14. The TCU of claim 6 , wherein the at least one electronic device in the vehicle comprises at least one of an Engine Control Unit (ECU), a Domain Control Unit (DCU), a Local Interconnect Network (LIN) master, a Media Oriented System Transport (MOST) master, an Ethernet switch, a radar sensor, a LiDAR sensor, a camera, an Audio Video Navigation (AVN), or a Rear Seat Entertainment (RSE).