Method for effectively transmitting downlink data by server for controlling TCU mounted in vehicle
One disclosure of the present specification provides a telematics communication unit (TCU) mounted in a vehicle. The TCU may comprise: a memory; a plurality of transmission/reception units including one or more antennas; and a processor for controlling the plurality of transmission/reception units. The processor may perform the steps of: collecting service requirements for one or more electronic devices in the vehicle, and then transmitting the collected service requirements to a server via a base station; receiving downlink data from the server through the base station; determining whether a data transmission rate according to the service requirements for one or more electronic devices in the vehicle can be supported at a transmission rate through available frequency channels of an antenna beam; and transferring the downlink data received from the server to the one or more electronic devices in the vehicle through the antenna beam according to the determination.
1. A Telematics Communication Unit (TCU) mounted in a vehicle, the TCU comprising:
a memory;
a plurality of transceivers including one or more antennas; and
a processor for controlling the plurality of transceivers, wherein the processor is configured to perform operations comprising:
after collecting service requirements for one or more electronic devices in the vehicle, transmitting the service requirements to a server through a base station;
receiving downlink data from the server through the base station;
determining whether a data transmission rate according to the service requirements for the one or more electronic devices in the vehicle can be supported as a transmission rate through available frequency channels of an antenna beam; and
transmitting the downlink data received from the server through a corresponding antenna beam to the one or more electronic devices in the vehicle according to the determination.
2. The TCU of claim 1 , wherein collecting the service requirements for the one or more electronic devices in the vehicle comprises:
obtaining information on service requirements for each electronic device; and
collecting the information on the service requirements, and
wherein the information on the service requirements includes information on a minimum data transmission rate and delay requirements.
3. The TCU of claim 1 , wherein the processor is further configured to perform operations comprising:
selecting a transceiver and an antenna beam having a maximum transmission rate from among the plurality of transceivers.
4. The TCU of claim 1 , wherein the processor is further configured to perform operations comprising:
buffering the downlink data received from the server in a reception buffer in the memory.
5. The TCU of claim 4 , wherein the processor is further configured to perform operations comprising:
copying the downlink data buffered in the buffer to internal registers by a size of each of the internal registers of each of the plurality of transceivers.
6. The TCU of claim 1 , wherein the plurality of transceivers comprises a Long-Term Evolution (LTE) transceiver, a 5G transceiver, and a Wireless Local Area Network (WLAN) transceiver.
7. The TCU of claim 6 , wherein the 5G transceiver comprises a first 5G transceiver using a sub-6 GHz band and a second 5G transceiver using mmWave.
8. The TCU of claim 1 , wherein the one or more electronic devices 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), and a Rear Seat Entertainment (RSE).
9. A server for controlling a Telematics Communication Unit (TCU) mounted in a vehicle in a next-generation mobile communication system, the server comprising:
a transceiver; and
a processor for controlling the transceiver, wherein the processor is configured to perform operations comprising:
receiving, through a base station, information on service requirements for one or more electronic devices connected to the TCU mounted in the vehicle;
comparing a data transmission rate by an antenna beam of the base station and a data transmission rate according to the service requirements; and
transmitting downlink data through the antenna beam of the base station.
10. The server of claim 9 , wherein the processor is further configured to perform operations comprising:
determining a radio channel to be used between the TCU mounted in the vehicle and the one or more electronic devices; and
transmitting information on the determined radio channel to the TCU through the base station.
11. The server of claim 10 , wherein determining the radio channel comprises:
calculating a distance to other TCUs;
comparing the distance to the other TCUs with a threshold distance; and
according to the comparison, determining a radio channel having a signal strength greater than a Signal-to-Interference and Noise Ratio (SINK) causing a transmission failure.
12. The sever of claim 11 , wherein determining the radio channel comprises:
selecting a plurality of radio channels.
13. The server of claim 9 , wherein the processor is further configured to perform operations comprising:
determining an antenna beam between the TCU mounted in the vehicle and the one or more electronic devices; and
transmitting information on the determined antenna beam to the TCU through the base station.
14. The server of claim 9 , wherein the base station comprises a Long-Term Evolution (LTE) transceiver, a 5G transceiver, and a Wireless Local Area Network (WLAN) transceiver.
15. The server of claim 14 , wherein the 5G transceiver comprises a first 5G transceiver using a sub-6 GHz band and a second 5G transceiver using mmWave.