MEC Server Beam Selection for TCU Data Transmission
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Solution Overview
Problem
Current 5G mobile communication networks face challenges in achieving low latency and high data rates for vehicles, particularly in autonomous driving scenarios, due to inefficiencies in data transmission between Multi-access Edge Computing (MEC) servers and Telematics Communication Units (TCUs, which can result in inadequate multimedia service delivery and safety concerns with control data transmission.
Innovation Solution
A server and TCU system that dynamically determines and uses optimal transmission beams based on channel state information, Ethernet communication speed, and data type to ensure efficient data transmission, prioritizing control data for safety and adjusting data rates to match available bandwidth, thereby enhancing data transmission efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the MEC server transmits data to the TCU without considering the Ethernet communication speed, then the data rate can be high, but the TCU cannot properly provide the multimedia service due to bandwidth constraints
Solution Approach 1:
The MEC server determines the Ethernet communication speed of the TCU as a parameter and uses it to adjust the data rate for transmitting multimedia data. This ensures the data rate is adapted to match the TCU's actual bandwidth capability, resolving the contradiction between high data rate and service provision capability.
2Device complexity
If the MEC server does not consider data type when determining transmission beam, then the system is simple, but vehicle safety is not guaranteed due to inadequate control data transmission
Solution Approach 1:
The MEC server applies different transmission beam determination methods based on data type. For control data, it selects a beam that guarantees timely transmission to ensure vehicle safety. For multimedia data, it uses different criteria optimized for data rate. This localized differentiation resolves the contradiction between system simplicity and safety reliability.
3Productivity
If the TCU requests data from the MEC server without considering Ethernet communication speed, then data can be transmitted at high rate, but the TCU cannot properly provide the service due to bandwidth limitations
Solution Approach 1:
The TCU includes information about its Ethernet communication speed in the data request message sent to the MEC server. The MEC server uses this feedback information to determine the appropriate data rate for transmitting data back to the TCU, ensuring reliable service delivery that matches the TCU's actual bandwidth capability.
Data Source
AI summary
A disclosure of the present specification provides a server for controlling a TCU mounted in a vehicle. The server comprises: a transceiver; and a processor for controlling the transceiver wherein the processor may perform the steps of: receiving channel state information regarding a wireless channel between the TCU and the base station; determining an available data rate for a combination of a plurality of transmission beams of the base station and a plurality of reception beams of the TCU; receiving a data request message of the TCU; determining a first transmission beam to be used for transmission of first data; and transmitting the first data and information regarding the first transmission beam.