Multicarrier Paging Bitmap Mechanism for Mobile Station
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Solution Overview
Problem
Conventional paging group information, global carrier configuration, and multicarrier advertisement messages in mobile communication systems do not provide necessary paging-related information for each carrier, leading to potential message loss during transmission through multiple carriers.
Innovation Solution
A method where a base station transmits a first message with indices of multiple carriers and a second message with a bitmap indicating which carriers are used for paging, allowing the mobile station to select and receive the paging message through the appropriate carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional paging group information messages are transmitted through all carriers, then carrier coverage is improved, but paging message reliability deteriorates due to potential message loss
Solution Approach 1:
The patent segments the paging message transmission by introducing a bitmap field that divides carriers into paging carriers and non-paging carriers. Each carrier's paging status is independently indicated through bit positions in the bitmap, allowing the system to selectively transmit paging messages only on designated carriers rather than all carriers, thus preventing message loss while maintaining coverage.
Solution Approach 2:
The patent applies preliminary action by providing carrier configuration information and bitmap indicators to mobile stations before paging message transmission. This allows mobile stations to pre-identify which carriers will be used for paging, ensuring they tune to the correct carrier and receive messages reliably without loss.
2Productivity
If paging messages are transmitted through multiple carriers, then system capacity is improved, but message loss risk increases
Solution Approach 1:
The patent applies local quality by assigning different functions to different carriers through the bitmap mechanism. Specific carriers are designated with paging functionality (bit=1) while others are not (bit=0), creating localized paging transmission zones. This ensures paging messages are transmitted only on carriers with appropriate quality and configuration, preventing message loss while maintaining multi-carrier capacity.
3Device complexity
If carrier information is provided through existing messages, then message complexity is reduced, but paging information completeness deteriorates
Solution Approach 1:
The patent merges carrier configuration information with paging group information by integrating a bitmap field into the existing paging group information message structure. This combination provides both carrier identification and paging status indication in a single message, maintaining low complexity while delivering complete paging information including which specific carriers support paging.
Data Source
AI summary
A base station transmits a first message including indices of a plurality of carriers and information for the plurality of carrier to a mobile station. Also, the base station transmits a second message including a bitmap representing whether each of the plurality of carriers corresponds to a paging carrier used for transmitting a paging message, to the mobile station. The base station selects a paging transmission carrier for the mobile station from among the plurality of carriers and transmits a paging message through the selected paging transmission carrier.