Survival Time Resource Allocation for Reliable RAN Duplication
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Solution Overview
Problem
Existing wireless communication technologies face challenges in ensuring high-speed, low-latency, and ultra-reliable communication, particularly in managing network resource allocation and survival time for user equipment (UE) to meet the requirements of vertical industries, with issues such as transmission delays and resource wastage.
Innovation Solution
Implementing a survival time timer and resource allocation mechanism that includes configured grant (CG) type resources, PDCP duplication, and Dual Active Protocol Stack (DAPS) handover to enhance reliability and efficiency in wireless communication, allowing UE to activate duplication functions independently and manage resource usage based on survival time thresholds and feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PDCP duplication function is activated for reliable transmission, then communication reliability is improved, but resource consumption and device complexity increase
Solution Approach 1:
The network side pre-configures multiple RLC entities and their corresponding logical channels before transmission failures occur. When a failure is detected, the UE can immediately switch to pre-configured alternative paths without complex real-time decision-making, thus improving reliability while keeping device complexity manageable.
Solution Approach 2:
The UE autonomously monitors transmission status and independently activates PDCP duplication based on pre-configured thresholds and conditions. This self-service mechanism eliminates the need for complex network-side control and real-time signaling, reducing device complexity while maintaining high reliability through automated failover.
2Reliability
If retransmission scheduling is implemented for transmission failure, then communication reliability is improved, but transmission delay increases
Solution Approach 1:
Multiple RLC entities and transmission paths are pre-configured before failures occur. When a transmission failure is detected, the system immediately switches to alternative pre-configured paths rather than initiating retransmission scheduling procedures, thereby maintaining reliability while minimizing additional transmission delays.
Solution Approach 2:
The system dynamically switches between different transmission paths based on real-time channel conditions and failure detection. By maintaining multiple pre-configured paths and enabling rapid switching, the system achieves reliable communication without the time penalty of traditional retransmission scheduling.
3Reliability
If multiple RLC entities are configured for PDCP duplication, then communication reliability is improved, but resource allocation complexity increases
Solution Approach 1:
The network side performs all complex resource allocation and configuration of multiple RLC entities in advance, before transmission failures occur. This preliminary action simplifies real-time operations at the UE, which only needs to monitor status and switch between pre-configured entities, thereby improving reliability while reducing resource allocation complexity during active transmission.
Solution Approach 2:
The UE autonomously manages the switching between multiple pre-configured RLC entities based on simple status monitoring and pre-defined criteria. This self-service approach eliminates the need for complex real-time resource allocation decisions at the UE, reducing operational complexity while maintaining high reliability through automated path selection.
4Productivity
If survival time monitoring is implemented for resource allocation, then resource utilization efficiency is improved, but measurement and detection difficulty increases
Solution Approach 1:
The system implements feedback mechanisms where the network side monitors transmission status and survival time, then provides control signals to the UE. This feedback approach allows complex survival time measurements and decisions to be made at the network side with better measurement capabilities, while the UE simply follows control signals, thereby improving resource utilization without significantly increasing UE measurement complexity.
Data Source
AI summary
In wireless communication, a survival time is a parameter that can be wirelessly communicated on the Radio Access Network (“RAN”) side. The survival time information is used for application and resource allocation for increased reliability. For example, the survival time state application and monitoring may be used for configuration of configured grant (“CG”) resources when a user equipment (“UE”) activates a duplication application.