Mobile Station Access Restriction for Signal Reduction
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Solution Overview
Problem
The existing 'Fast Dormancy function' in mobile stations leads to frequent transitions between the 'Preservation state' and 'Active state' due to small data transmissions, resulting in an unnecessary increase in signal repetitions.
Innovation Solution
A mobile station and radio base station system that utilizes access restriction information to decide whether to transmit a connection request signal, distinguishing between communications satisfying a predetermined condition, such as periodic data transmission, and other types of communication, thereby restricting unnecessary transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the Fast Dormancy function is implemented to transition to Preservation state for battery efficiency, then battery consumption is reduced, but frequent transitions occur for small data transmissions causing signal increase
Solution Approach 1:
The patent changes the parameter of access control by introducing access restriction information that distinguishes between different types of communications. The mobile station modifies its behavior based on this parameter change, suppressing connection requests for periodic data while allowing them for other communications, thereby reducing unnecessary state transitions and signal repetitions.
2Use of energy by moving object
If the mobile station transitions to Preservation state for small data transmissions, then battery efficiency is improved, but the communication reliability for periodic data deteriorates due to excessive state transitions
Solution Approach 1:
The patent applies local quality by treating different types of communications differently. Access restriction information is introduced that specifically targets periodic data transmissions, allowing the mobile station to maintain Preservation state for these while still transitioning to Active state for other communications, thus preserving communication reliability for critical data while maintaining battery efficiency.
3Quantity of substance
If access restriction information is introduced to suppress connection requests, then signal amount is reduced, but device complexity increases due to additional information processing
Solution Approach 1:
The patent introduces access restriction information as an intermediary mechanism between the mobile station and the radio base station. This intermediary carries specific flags (periodic data flag, access restriction flag) that enable the mobile station to make intelligent decisions about connection requests without requiring complex local analysis, thus reducing signal repetitions while adding minimal processing complexity.
Data Source
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AI summary
To suppress increase in the amount of signals due to repetition of transition to a "Preservation state" and return to an "Active state," a mobile station UE according to the present invention includes: a receiving unit 13 configured to receive access restriction information against communication satisfying a predetermined condition during the "Preservation state," from a radio access network; and a transmitting unit 12 configured to transmit an "RRC CONNECTION REQUEST" to the radio access network in a case where the mobile station UE transitions from the "Preservation state" to the "Active state." The transmitting unit 12 is configured to decide whether or not to transmit an "RRC CONNECTION REQUEST" for the communication satisfying the predetermined condition, on the basis of the access restriction information.