CSG Whitelist Management for Wireless Cell Selection
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Solution Overview
Problem
Current wireless communication systems, such as 3GPP LTE, face challenges in efficiently supporting closed subscriber group (CSG) functions while maintaining system resource efficiency and operation efficiency, especially with the growing number of users and varying data transmission requirements.
Innovation Solution
The implementation of a communication terminal with a CSG whitelist that allows users to manually or automatically select and manage CSGs, including storage of permanent and temporary CSG entries, and automatic cell reselection based on the whitelist, to optimize cell selection and conserve battery power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed resource allocation system is used in wireless communication networks, then system resources can be efficiently managed, but the system cannot provide high and flexible data transmission rates to accommodate growing users and varying data requirements
Solution Approach 1:
The patent implements dynamic resource allocation where the network can adjust data transmission rates and resource assignments in real-time based on user requirements and network conditions. This allows the system to transition from fixed to flexible resource management, enabling high data rates when needed while maintaining efficient resource utilization across the growing user base.
2Ease of operation
If closed subscriber group functions are added to support restricted access cells, then user access control and cell selection can be improved, but system complexity and overhead increase
Solution Approach 1:
The patent pre-configures CSG whitelist information in user equipment before actual cell selection occurs. The whitelist containing allowed CSG identifiers is prepared in advance and stored in the device, enabling rapid cell selection and access control without real-time complex computations. This preliminary preparation simplifies the actual cell selection process while maintaining robust access control.
3Use of energy by moving object
If automatic cell reselection based on CSG whitelist is implemented, then user equipment can conserve battery power and improve performance, but the complexity of cell management increases
Solution Approach 1:
The patent enables user equipment to autonomously perform cell reselection based on pre-stored CSG whitelist information. The device automatically compares detected cell identifiers against the whitelist and makes selection decisions without requiring continuous manual intervention or complex network coordination. This self-service approach reduces battery consumption while the automated process manages the complexity of cell selection internally.
Data Source
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AI summary
Systems and methods for providing radio frequency transceiver user equipment in a packet based radio frequency signaling communication system are disclosed. User equipment is provided with closed subscriber group ('CSG') capability including permanent storage for a CSG whitelist, the whitelist including identifiers of CSGs the user equipment is a member of. Base stations transmit signals including identifiers corresponding to CSGs the base station supports. The base station or cell selection process performed by the user equipment includes selecting cells that are part of the CSG whitelist. In additional embodiments, the user equipment includes user alterable storage for a user controlled CSG whitelist. The user alterable storage may further be partitioned into permanent and temporary portions. In an exemplary method, the user controls the cell selection process using the CSG whitelist information stored in the user equipment. Methods for managing the CSG whitelist are described.