RRC Parameter Group Selection for Wireless Handover Latency
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Solution Overview
Problem
In wireless communication systems, especially in scenarios involving relay networks, ensuring reliable and continuous data transmission is challenging due to mobility and handover events, leading to instability and increased latency, which is exacerbated by the complexity of managing multiple cell connections and resource allocation.
Innovation Solution
The method involves pre-configuring multiple RRC parameter groups for a user device, allowing it to dynamically select and execute the appropriate parameters based on specific conditions during handovers, thereby minimizing link re-establishment delays and resource consumption while maintaining communication continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional link re-establishment procedures are used during relay handover, then communication reliability is maintained, but transmission latency increases and traffic interruption occurs
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple RRC parameter groups (first RRC parameter group set) in the remote UE before handover occurs. When handover is triggered, the remote UE can immediately switch to a suitable pre-configured parameter group without waiting for new configuration, thereby eliminating the time loss associated with conventional re-establishment procedures while maintaining communication reliability.
Solution Approach 2:
The patent implements dynamics by enabling the remote UE to dynamically select and switch between multiple pre-configured RRC parameter groups based on real-time conditions during relay handover. This dynamic selection mechanism allows the system to adapt quickly to changing network conditions without the latency of conventional reconfiguration procedures.
2Loss of time
If multiple RRC parameter groups are pre-configured for dynamic selection during handover, then transmission latency is reduced and traffic continuity is enhanced, but device complexity increases
Solution Approach 1:
The patent reduces device complexity by performing the complex parameter configuration work in advance during normal operation. The multiple RRC parameter groups are pre-configured and stored in the remote UE before handover events occur, so that during actual handover the device only needs to perform simple selection and switching among pre-prepared options, rather than managing complex real-time configuration.
3Use of energy by moving object
If quick response to relay node handover is implemented through pre-configured parameters, then power consumption is reduced and resource usage is minimized, but system adaptability to diverse mobility scenarios must be maintained
Solution Approach 1:
The patent achieves low power consumption by performing the energy-intensive parameter configuration operations in advance when the device has stable connectivity. During actual handover events, the remote UE only needs to perform low-power selection and switching among pre-configured parameter groups, avoiding the need to perform complex configuration procedures during mobility events when power efficiency is critical.
Solution Approach 2:
The patent ensures system adaptability through universality by designing the first RRC parameter group set to include multiple parameter groups that can handle different mobility scenarios (varying speeds, different relay configurations, various network conditions). This universal set of pre-configured parameters enables the system to adapt to diverse mobility scenarios without requiring scenario-specific configuration procedures.
Data Source
AI summary
The present application discloses a method and a device used for wireless communications, including: receiving a first radio signal and a second radio signal; the first radio signal comprising a first signaling, and the second radio signal comprising a first message; the first signaling being used to indicate a first RRC parameter group set; the first RRC parameter group set comprising Q RRC parameter groups, Q being a positive integer greater than 1, while the first message being used to determine a first RRC parameter group from the first RRC parameter group set; executing the first RRC parameter group; and transmitting a second message; the second message being used to determine that the first RRC parameter group is completed. By transmitting the first message, this application helps a first node with the execution of a proper RRC parameter group, which enhances the reliability and the traffic continuity.