Wireless Bearer Survival Time State for RRC Transition Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing the transition of wireless devices between different radio resource control states, particularly in scenarios involving varying network conditions and device capabilities, leading to suboptimal performance and resource utilization.
Innovation Solution
The implementation of a Survival Time State mechanism in wireless devices and base stations, which enhances the processes associated with entering and exiting various radio resource control states, optimizing communication protocols to adapt to changing network conditions and device capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless devices use traditional state transition mechanisms between RRC states, then basic communication functionality is maintained, but state transition efficiency and resource utilization are suboptimal
Solution Approach 1:
The patent introduces a survival time state where the wireless device is kept in a connected state for a predetermined duration after data transmission completes. This preliminary action prevents immediate state transitions and allows the network to maintain connection readiness, eliminating the need for frequent state changes and reducing transition delays for subsequent communications.
Solution Approach 2:
The patent dynamically adjusts the survival time duration based on device category, network conditions, and traffic patterns. Different wireless device categories are assigned different survival time values, allowing the system to adapt connection maintenance strategies to specific device capabilities and requirements, optimizing both transition efficiency and resource utilization.
2Use of energy by moving object
If wireless devices frequently transition between RRC states to save power, then energy consumption is reduced, but communication latency and reliability deteriorate
Solution Approach 1:
By establishing a survival time state that maintains connection before complete data transmission ends, the system performs a preliminary action that preserves communication readiness. This prevents immediate transitions to idle states that would cause latency, while still allowing eventual power-saving transitions, thus maintaining reliability without excessive energy consumption.
3Reliability
If the network maintains connected state for all devices to ensure rapid response, then communication reliability is improved, but network resource utilization and scalability worsen
Solution Approach 1:
The patent applies different connection maintenance strategies to different wireless device categories based on their specific requirements. High-priority devices receive longer survival times with maintained connected states, while lower-priority devices transition to power-saving states. This localized quality approach ensures reliability for critical communications while optimizing overall network resource utilization and scalability.
Data Source
AI summary
A wireless device may receive a configuration parameter indicating that a survival time state is configured for a first radio bearer. The wireless device may determine to enter a survival time state for the first radio bearer in response to receiving a retransmission grant for a transport block comprising data of a logical channel associated with the first radio bearer. In response to receiving control information, the wireless device may determine to exit from the survival time state for the first radio bearer and remain in the survival time state for a second radio bearer.