5G Random Access Prioritization for MPS, MCS, and Handover
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Solution Overview
Problem
Existing 5G wireless communication systems lack efficient methods to prioritize random access procedures for multimedia prioritized services (MPS) and mission critical services (MCS), leading to suboptimal resource allocation and potential delays.
Innovation Solution
A method for a terminal to receive and apply specific sets of random access prioritization parameters based on the nature of the access procedure, such as beam failure recovery or handover, ensuring appropriate prioritization for multimedia and mission critical services by identifying and applying the correct set of parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If random access procedures are not prioritized for MPS and MCS, then resource allocation remains uniform across all services, but service reliability and latency performance deteriorate for critical services
Solution Approach 1:
The patent segments random access parameters into different sets (first set for MPS, second set for MCS, third set for other services) based on service priority. The terminal device identifies and applies the appropriate parameter set according to the service type, enabling differentiated resource allocation without requiring complete reconfiguration of the random access procedure. This segmentation resolves the contradiction by providing service-specific optimization while maintaining a structured parameter management framework.
Solution Approach 2:
The patent changes key random access parameters (such as power ramping steps, backoff indicators, and preamble transmission opportunities) based on the identified service type. By dynamically adjusting these parameters according to whether the service is MPS, MCS, or other, the system achieves improved reliability for critical services while managing complexity through predefined parameter sets that are configured and selected based on service requirements.
2Productivity
If multiple sets of random access parameters are configured for different services, then service-specific optimization is achieved, but parameter identification and selection complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple sets of random access parameters (first set for MPS, second set for MCS, third set for other services) before the actual random access procedure. The network device provides these parameter sets in advance through RRC signaling, and the terminal device stores them for quick identification and selection during random access. This eliminates the need for real-time parameter calculation or complex selection logic during the random access procedure itself, thereby improving resource allocation efficiency while managing identification complexity through pre-established parameter sets.
3Loss of time
If random access prioritization is implemented for beam failure recovery and handover, then access latency is reduced for critical procedures, but the complexity of parameter selection logic increases
Solution Approach 1:
The patent applies local quality by assigning specific parameter sets to specific random access scenarios: the first parameter set is used for beam failure recovery, the second parameter set for handover, and the third parameter set for other services. Each parameter set is optimized for its specific use case (e.g., faster power ramping for beam failure recovery, different backoff indicators for handover). The terminal device identifies the current scenario and applies the corresponding parameter set, achieving reduced access latency for critical procedures while managing selection logic complexity through clear scenario-based differentiation.
Data Source
AI summary
A communication method and system for converging a 5th generation (5G) communication system for supporting higher data rates beyond a 4th generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system includes intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The method includes receiving and selectively applying at least one of a first set of random access prioritization parameters, a second set of random access prioritization parameters, or a third set of random access prioritization parameters, based on whether a random access procedure is initiated for beam failure recovery or handover.