PDCP Header Compression Continuity During 5G Handover
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, the process of handover between radio access technologies and maintaining header compression configuration information is inefficient, leading to unnecessary waste of transmission resources and delays in header compression application.
Innovation Solution
Implementing an indicator in the PDCP layer configuration information to allow continuous use of existing header compression protocol configuration during handover and RRC connection resumption, thereby avoiding the need for repeated synchronization and initialization, and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If header compression protocol configuration information is re-synchronized during handover, then reliability of configuration is improved, but loss of time and transmission resource waste increase
Solution Approach 1:
The patent extracts the header compression protocol configuration information from the complete PDCP layer configuration and identifies it as a separate maintainable entity. By indicating that this specific configuration information should be maintained without re-synchronization during handover, the patent isolates this critical parameter from the general reconfiguration process, thereby reducing handover delay while preserving configuration reliability for this specific parameter.
Solution Approach 2:
The patent applies preliminary action by pre-configuring the indicator in the PDCP layer configuration information before handover occurs. This indicator预先 indicates that the header compression protocol configuration should be maintained, allowing the receiving end to prepare for continuous use of existing configuration without waiting for re-synchronization during the handover process.
2Manufacturing precision
If header compression protocol configuration information is re-synchronized during handover, then configuration accuracy is improved, but transmission resource waste increases
Solution Approach 1:
The patent extracts the header compression protocol configuration information from the complete PDCP layer configuration and treats it as a separate maintainable entity. By indicating that this specific configuration should be maintained without re-synchronization, the patent isolates this parameter from general reconfiguration processes, thereby reducing transmission resource waste while preserving configuration accuracy through selective maintenance.
Solution Approach 2:
The patent applies local quality by applying different treatment to different parts of the PDCP configuration. Specifically, the header compression protocol configuration is marked for continuous use while other configuration parameters may be re-synchronized. This localized approach ensures configuration accuracy where needed while minimizing overall transmission resource consumption.
3Reliability
If PDCP layer configuration information is completely re-established during handover, then reliability is improved, but productivity decreases
Solution Approach 1:
The patent segments the PDCP layer configuration information into distinct components, specifically identifying the header compression protocol configuration as a separate maintainable element. By indicating that this segment should be continuously used during handover, the patent enables selective maintenance of configuration reliability while avoiding complete re-establishment, thereby improving handover efficiency without sacrificing essential configuration reliability.
Solution Approach 2:
The patent applies preliminary action by pre-configuring the indicator in the PDCP layer configuration information before handover occurs. This indicator预先 indicates that the header compression protocol configuration should be maintained, allowing the receiving end to prepare for continuous use of existing configuration without waiting for re-synchronization during the handover process.
Data Source
AI summary
Provided is an operating method of a user equipment (UE) in a wireless communication system, the operating method including: receiving, from a base station, a radio resource control (RRC) message including packet data convergence protocol (PDCP) layer configuration information for each data radio bearer (DRB); and when a PDCP entity is configured to be reestablished for each DRB and the PDCP layer configuration information includes an indicator indicating to continuously use header compression protocol configuration information, indicating to a lower layer entity that the header compression protocol configuration information is configured to be continuously used.