Multicarrier Paging Group Allocation and Carrier Selection
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Solution Overview
Problem
Conventional paging group information messages, global carrier configuration messages, and multicarrier advertisement messages do not provide sufficient paging-related information for each carrier, leading to potential loss of paging messages when transmitted through multiple carriers in mobile communication systems.
Innovation Solution
A method where a base station transmits a first message with carrier indices and information to a mobile station, allocates a paging group, and sends a second message with paging group information indicating which carriers support each paging group, allowing the mobile station to select an appropriate paging transmission carrier for receiving the paging message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging messages are transmitted through multiple carriers, then the coverage and reliability of paging delivery is improved, but the complexity of carrier configuration and information management increases
Solution Approach 1:
The patent segments the carrier configuration information into two distinct parts: (1) a set of carriers that support paging messages, and (2) for each paging group, the specific carriers that support it. This segmentation allows the base station to manage multiple carriers systematically while providing clear, organized information to mobile stations, reducing the complexity of interpreting carrier configurations across multiple frequencies.
Solution Approach 2:
The base station performs preliminary configuration by pre-defining which carriers support paging messages and which carriers support each paging group before mobile stations need to receive paging messages. This preliminary action is communicated through system information messages, allowing mobile stations to be pre-informed of the carrier-paging group mappings, thereby simplifying the reception process and reducing real-time decision complexity.
2Measurement precision
If carrier information for each paging group is provided, then the accuracy of paging carrier selection is improved, but the amount of information to be transmitted increases
Solution Approach 1:
The patent extracts only the essential information needed for paging carrier selection: for each paging group, it identifies and communicates only the specific carriers that support that paging group. This extraction approach avoids transmitting unnecessary carrier configuration details, providing precise carrier selection information while minimizing the overall information volume required for paging operations.
Solution Approach 2:
The patent applies local quality by providing differentiated carrier information for each paging group rather than a uniform configuration for all groups. Each paging group has its own specific carrier assignment, allowing mobile stations to receive tailored information relevant to their specific paging group, improving selection accuracy while avoiding the overhead of transmitting complete carrier configurations for all possible groups.
3Extent of automation
If mobile station determines paging carrier using equation, then the automation of carrier selection is improved, but the risk of message loss due to incorrect determination increases
Solution Approach 1:
The patent enables mobile stations to autonomously determine their paging carrier by providing them with the necessary configuration information (set of carriers supporting paging, and mapping of paging groups to carriers) and allowing them to use equations or algorithms to select the appropriate carrier based on their assigned paging group. This self-service approach automates the selection process while maintaining reliability through accurate, pre-configured information.
Solution Approach 2:
The base station provides feedback information to mobile stations through system information messages, including the configuration of carriers that support paging and the specific carriers for each paging group. This feedback enables mobile stations to make accurate carrier selections, and the base station can update this information as needed, ensuring that the automation remains reliable even as network configurations change.
Data Source
AI summary
A base station allocates a paging group to a mobile station. The base station transmits, to a mobile station, a first message including indices of a plurality of carriers and information for the plurality of carriers and a second message including paging group information representing whether each of a plurality of carriers supports each of one or more paging groups. Then, the base station selects a paging transmission carrier for the mobile station from among at least one paging carrier corresponding to the paging group allocated to the mobile station and transmits the paging message through the paging transmission carrier.