Random Access Resource Selection for V2X Handover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the context of V2X communication, existing mobile communication systems face challenges in efficiently managing semi-persistent scheduling and handover processes, particularly in Vehicle-to-Everything (V2X) scenarios, where base stations lack information on whether User Equipment (UE) has successfully received activation/deactivation signals, leading to unnecessary control signal transmissions and increased power consumption.
Innovation Solution
The proposed solution involves a method where the UE receives Semi-Persistent Scheduling (SPS)-related configuration information from the base station, generates supporting information, and assists the base station with local caching, allowing for efficient resource allocation and reduced processing loads during handovers by using dedicated and common random access resources with defined timers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station repeatedly transmits activation/deactivation signals for semi-persistent scheduling, then the reliability of signal delivery is improved, but the base station generates unnecessary control signals and the UE experiences increased power consumption
Solution Approach 1:
The patent implements a feedback mechanism where the UE sends an acknowledgment signal to the base station when it successfully receives the activation/deactivation signal for semi-persistent scheduling. This feedback allows the base station to stop retransmitting the signal once delivery is confirmed, thereby improving signal delivery reliability while preventing unnecessary control signal transmissions and reducing UE power consumption.
2Adaptability or versatility
If the base station transmits both dedicated and common random access resources, then the adaptability of random access procedures is improved, but the device complexity and resource management become more complex
Solution Approach 1:
The patent implements dynamic resource selection where the UE determines which random access resources to use based on current system conditions and configuration. The UE can dynamically switch between dedicated and common random access resources depending on whether dedicated resources are configured and available, allowing the system to maintain high adaptability while reducing resource management complexity through conditional selection rather than simultaneous management of all resources.
Data Source
AI summary
Disclosed are a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. Disclosed is a method by which a terminal performs a random access, comprising: receiving, from a serving base station, a handover command including configuration information indicating a dedicated random access resource and a common random access resource determining whether to perform a random access by using at least one of the dedicated random access resource and the common random access resource according to predetermined criteria; and performing the random access on the basis of the determination result.