Radio Network Controller Power Offset Information Segmentation
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Solution Overview
Problem
In wireless communication systems, serving radio network controls often struggle to resolve power offset information of secondary common pilot channels for primary and secondary carrier cells, leading to incomplete data transmission during handovers.
Innovation Solution
A method is introduced where the drift radio network control sets and transmits specific information elements regarding MIMO pilot modes used by target primary and secondary carrier cells, allowing the serving radio network control to determine the power offset information accurately through the IUR interface, even for old versions that can only identify single carrier cell information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the drift radio network control transmits power offset information using multiple information elements for different carrier types, then the completeness of power offset information is improved, but the device complexity increases
Solution Approach 1:
The patent segments the power offset information transmission by creating separate information elements for different carrier types (single carrier, primary carrier, secondary carrier). Each information element is specifically designed to handle power offset data for its corresponding carrier type, allowing the system to transmit complete information without mixing different data types in a single structure.
Solution Approach 2:
The patent adds a dimension of carrier type classification to the information element structure. Instead of using a single flat information element, the solution introduces a hierarchical structure where information elements are organized by carrier type, enabling comprehensive information transmission while maintaining clear structural boundaries.
2Adaptability or versatility
If the system supports both single carrier and multi-carrier modes with different MIMO pilot modes, then the adaptability is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent applies local quality by designing specific information elements tailored to each carrier type's requirements. Each information element contains power offset information optimized for its specific carrier type (single carrier, primary carrier, or secondary carrier), making detection and measurement easier for each local context rather than using a generic structure.
Solution Approach 2:
The patent changes the parameters of the information elements based on the carrier type. Different information elements have different structures and contents appropriate to their specific carrier type, allowing the system to adapt to various modes while maintaining clear, detectable parameter definitions for each case.
3Reliability
If the drift radio network control sets information elements for all carrier types, then the reliability of handover is improved, but the loss of time increases
Solution Approach 1:
The patent implements preliminary action by having the drift radio network control set and prepare all necessary information elements for different carrier types in advance, before the handover actually occurs. This pre-processing ensures that when handover is needed, the power offset information is already organized and ready, improving reliability while minimizing the time required during the critical handover moment.
Data Source
AI summary
A method for transmitting power offset information of a secondary common pilot channel and a radio network control, including: after a drift radio network control receives request information sent by a serving radio network control and used for requesting the drift radio network control to feed back power offset information of respective secondary common pilot channels of managed target primary and secondary carrier cells, the drift radio network control setting following kinds of information elements with reference to MIMO pilot modes used respectively by target primary and secondary carrier cells: power offset information of a secondary common pilot channel of a single carrier cell, power offset information of a secondary common pilot channel of a primary carrier cell, and power offset information of a secondary common pilot channel of a secondary carrier cell, and feeding back set information elements to the serving radio network control through an IUR.