UE History Management for Wireless Handover Optimization
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Solution Overview
Problem
User Equipment (UE) does not process its history information when first accessing a serving base station, preventing the serving base station from utilizing this information for efficient handover and radio resource allocation.
Innovation Solution
A method where a UE operating in an idle mode collects and records its history information, including cell ID, type, serving time, and recent cell information, and transmits this data to the serving base station upon converting to an active mode, enabling the base station to use this information for efficient handover and radio resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the serving base station creates UE history information, then the base station has mobility management data, but the UE does not process this information so it cannot be used when the UE first accesses the base station
Solution Approach 1:
Instead of the base station storing history information unilaterally, the invention inverts the approach by having the UE collect and store its own history information during idle mode, then provide it to the base station when needed. This reversal of roles ensures the information is available and processed by the UE itself.
Solution Approach 2:
The UE performs preliminary action by collecting and storing history information during idle mode before actually needing to access the base station. This advance preparation ensures the information is ready for immediate use when the UE transitions to active mode, eliminating the delay of information collection at access time.
2Reliability
If the UE collects history information in idle mode, then the base station receives valid mobility data, but this requires additional UE processing and memory resources
Solution Approach 1:
The UE's existing idle mode operations are extended to also collect history information. The UE uses its existing measurement and cell monitoring capabilities during idle mode to gather additional data, making multi-use of existing UE functions without requiring entirely new hardware or processing subsystems.
3Productivity
If the UE transmits history information upon accessing the base station, then the base station can perform efficient handover and resource allocation, but this increases initial access signaling overhead
Solution Approach 1:
The transmission of history information is merged with the existing random access and connection establishment signaling procedures. Instead of being a separate dedicated message, the history information is incorporated into the initial access signaling flow, utilizing existing message structures and channels to carry the additional data without creating entirely new signaling paths.
Data Source
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AI summary
A method for managing user equipment history information in a wireless communication network is described. When a user equipment enters into an idle mode, it is determined if a recording event occurs. Information related to the recording event is recorded into idle mode user equipment history information, when the recording event occurs. The recorded idle mode user equipment history information is transmitted to a base station, when the user equipment accesses the base station.