Direct Communication Services in 5G Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in providing efficient direct communication services, particularly in overcoming limitations such as limited message transmission distance in V2X technologies.
Innovation Solution
The method involves processing control signals in a wireless communication system by receiving a first control signal from a base station, processing it, and transmitting a second control signal based on the processing. This method enables the establishment and reuse of unicast links between terminals for efficient service provision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If DSRC technology is used for V2X communication, then direct communication between vehicles is enabled, but message transmission distance is limited
Solution Approach 1:
The patent introduces a base station as an intermediary node in the communication path. The terminal establishes unicast links with the base station, which then relays data to the target terminal. This mediator extends the effective communication distance beyond direct DSRC range while maintaining communication reliability through the infrastructure-supported link.
2Adaptability or versatility
If unicast links are established for each service between terminals, then direct communication is enabled, but signaling overhead increases
Solution Approach 1:
The patent makes the established unicast link reusable across multiple services. Once a unicast link is established between a terminal and base station, it can be reused for different services by reconfiguring the data radio bearer, avoiding the need to establish separate links for each service and thereby reducing signaling overhead.
Solution Approach 2:
The patent merges multiple service communications into a single unicast link infrastructure. By combining the control plane resources and using a shared unicast link for multiple data radio bearers, the system reduces the total number of signaling operations required compared to establishing separate dedicated links for each service.
3Adaptability or versatility
If new unicast links are established for each data transmission, then communication flexibility is improved, but link establishment time increases
Solution Approach 1:
The patent performs preliminary action by establishing and storing unicast link configurations in advance. The terminal pre-configures unicast links with the base station, and these pre-established links can be quickly activated for different services by reconfiguring data radio bearers, avoiding repeated link establishment procedures and reducing latency.
Data Source
Figure 1~2A
Figure 2B~3
Figure 4A
AI summary
The disclosure relates to a communication technique for combining, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and to a system therefor. The disclosure may be applied to intelligent services (e.g., a smart home, a smart building, a smart city, a smart car or connected car, healthcare, digital education, retail business, security and safety-related service, etc.), based on a 5th generation (5G) communication technology and an Internet of Things (IoT)-related technology. The disclosure discloses a method and an apparatus for providing direct communication services.