Wireless Handover Bearer Pre-Establishment for Low Latency
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Solution Overview
Problem
Current wireless communication systems face challenges in providing high reliability and low latency services, particularly in vehicle-to-device or vehicle-to-infrastructure communications, where handovers need to be efficiently managed to maintain service quality during terminal movement.
Innovation Solution
The method involves establishing bearers between Base Stations (BS) based on movement information of terminals, allowing seamless handovers by pre-establishing communication paths and optimizing data transmission through X2 or S1 interfaces, ensuring continuous service with reduced latency and increased reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional handover procedures are used in wireless communication systems, then device complexity and signaling overhead are reduced, but service reliability and latency performance deteriorate during terminal movement
Solution Approach 1:
The patent applies preliminary action by establishing bearers between base stations before the terminal actually moves to the target cell. The source base station pre-configures bearer resources with the target base station based on predicted terminal movement, so that when handover is needed, the data path is already prepared and the terminal can switch seamlessly without waiting for bearer establishment, thus reducing handover latency and improving service reliability
2Reliability
If bearers are pre-established between base stations for seamless handover, then service reliability and continuity are improved, but device complexity and network configuration overhead increase
Solution Approach 1:
The system performs preliminary bearer establishment between base stations based on terminal movement predictions, pre-configuring data transmission paths before actual handover occurs. This allows seamless service continuity during handover while managing complexity through automated bearer management and prediction-based triggering, rather than establishing bearers for all possible scenarios
Solution Approach 2:
The patent changes the state of bearer resources from inactive to active based on terminal movement parameters and prediction algorithms. By dynamically adjusting bearer establishment timing and target selection based on terminal velocity, direction, and predicted trajectory, the system optimizes service continuity while avoiding unnecessary bearer configurations that would increase network complexity
Data Source
AI summary
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides an operating method and apparatus for supporting a handover to support a high reliability and low latency service in a wireless communication system. The method of operating the terminal includes receiving data from a service via a first base station (BS), transmitting, to the first BS, a bearer establishment command message between the first BS and a second BS determined by movement information of the terminal, and receiving, from the second BS, data transmitted from the second BS via the established bearer between the first BS and the second BS.