Multiradio Time Synchronization for RF Resource Sharing
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Solution Overview
Problem
Multiradio devices face interoperability issues due to inter-system interference and inefficient resource management, particularly in radio frequency (RF) circuit designs, where simultaneous operations lead to prioritization problems and unsuitable handoff procedures for managing shared resources.
Innovation Solution
Implementing a common multiradio time concept using conversion functions to harmonize system times across different radio protocols, allowing for efficient resource sharing and minimizing interference by transforming and converting timer values between various radio protocols and a general clock, thereby enabling effective scheduling and resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a user equipment transmits a scheduling request signal and channel state information simultaneously on different physical uplink channels, then the uplink transmission efficiency is improved, but the power consumption increases and transmission accuracy may deteriorate due to different timing requirements
Solution Approach 1:
The patent combines the scheduling request signal and channel state information into a single uplink transmission opportunity by allowing the channel state information to carry both types of information simultaneously. This merging approach maintains transmission efficiency while reducing the number of separate transmissions required, thereby lowering overall power consumption.
Solution Approach 2:
The channel state information field is designed to serve multiple functions: it can carry channel state information alone, or it can carry both channel state information and scheduling request signals simultaneously. This multi-functionality allows the system to adapt to different transmission scenarios without requiring separate dedicated channels for each type of information, thus improving efficiency while managing power consumption.
2Productivity
If a user equipment transmits a scheduling request signal and channel state information simultaneously on different physical uplink channels, then the uplink transmission efficiency is improved, but the transmission accuracy deteriorates due to different timing requirements
Solution Approach 1:
The patent introduces a timing adjustment mechanism that acts as an intermediary between the scheduling request signal and channel state information transmissions. By adjusting the timing of one of the signals to align with the other, the system eliminates timing conflicts that would otherwise cause transmission errors, thereby maintaining reliability while allowing both signals to be transmitted efficiently.
Solution Approach 2:
The system dynamically adjusts the transmission timing of the scheduling request signal or channel state information based on their respective requirements. This dynamic timing adjustment ensures that both signals are transmitted at optimal moments, preventing the timing mismatches that would degrade transmission accuracy while still achieving simultaneous transmission efficiency.
3Productivity
If the base station increases the number of downlink component carriers to enhance service capability, then the system capacity is improved, but the random access channel selection complexity increases causing access failures
Solution Approach 1:
The patent segments the random access channel selection process by associating each downlink component carrier with a specific uplink component carrier for random access purposes. Instead of allowing random access on all uplink carriers regardless of downlink configuration, the system divides the access channels into specific groups linked to particular downlink carriers, thereby reducing selection complexity while maintaining the ability to handle multiple downlink carriers for enhanced capacity.
Solution Approach 2:
The system performs preliminary configuration of random access channel associations between downlink and uplink component carriers before the actual random access procedure. By pre-establishing which uplink carriers can be used for random access based on the downlink carrier configuration, the system eliminates the need for complex real-time selection logic during the random access process, thus reducing complexity while supporting multi-carrier operations for increased system capacity.
Data Source
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AI summary
The invention relates to a controlling apparatus configured to: search for at least one predetermined conversion function, check a system time of at least one radio protocol, define a common multiradio reference time, convert the system time of at least one radio protocol to the common multiradio reference time with the at least one conversion function and process control commands in the common multiradio reference time, and/or convert the common multiradio reference time to the system time of at least one radio protocol with the at least one conversion function and process control commands in the system time.