Radio Terminal Extended DRX Cycle Configuration
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Solution Overview
Problem
Current communication systems lack a mechanism for appropriate control of extended Discontinuous Reception (DRX) cycles, which are essential for reducing power consumption in machine-type communication (MTC) and other applications, leading to inefficiencies in monitoring and resource utilization.
Innovation Solution
A radio terminal and network apparatus that allow for the configuration of extended DRX cycles by exchanging parameters between the terminal and the base station, enabling the specification of timing for receiving paging messages and determining the feasibility of configuring longer DRX cycles, which can be notified through broadcast or unicast, and adjusted based on performance parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional DRX cycle is used for monitoring downlink control channels, then the radio terminal can maintain reliable communication monitoring, but the power consumption of the radio terminal increases
Solution Approach 1:
The patent implements dynamic DRX cycle adjustment by allowing the radio terminal to request extended DRX cycle configurations based on its current state and needs. The network can dynamically switch between conventional and extended DRX cycles, adjusting the monitoring frequency adaptively to balance power consumption and communication reliability in different scenarios
Solution Approach 2:
The patent changes the DRX cycle parameter from a fixed conventional value to an extended variable value. By introducing extended DRX cycle parameters and allowing negotiation between the radio terminal and network, the system can optimize the monitoring interval parameter to reduce power consumption while maintaining acceptable communication reliability
2Use of energy by moving object
If an extended DRX cycle is configured to further reduce power consumption, then the power consumption decreases, but the timing for receiving paging messages becomes less precise and may miss communication opportunities
Solution Approach 1:
The patent implements feedback mechanisms where the radio terminal monitors communication conditions and provides feedback to the network about its power needs and reception status. The network uses this feedback to adjust the extended DRX cycle configuration, ensuring that paging messages are transmitted at appropriate times even with longer intervals, thus maintaining timing accuracy while reducing power consumption
Solution Approach 2:
The patent allows the radio terminal to preliminarily request extended DRX cycle configuration before actually needing it. The network can prepare and configure extended DRX parameters in advance, ensuring that when the terminal transitions to extended DRX mode, the timing for paging reception is already optimized and synchronized, preventing loss of paging opportunities
3Adaptability or versatility
If the network supports extended DRX configuration, then the adaptability to different communication scenarios improves, but the device complexity and control mechanism complexity increase
Solution Approach 1:
The patent creates a universal extended DRX control mechanism that can handle both conventional and extended DRX scenarios through a unified framework. The same control procedures and signaling mechanisms are used whether the network configures conventional or extended DRX cycles, reducing the need for separate complex control paths and simplifying the overall system architecture
Solution Approach 2:
The patent introduces standardized signaling procedures as intermediaries between the radio terminal and network for DRX configuration. These standardized messages and procedures act as mediators that simplify the interaction, allowing the network to configure extended DRX cycles through well-defined signaling without requiring complex direct control logic, thus reducing overall system complexity
Data Source
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AI summary
A communication method according to the present embodiment comprises: a step of establishing, by a radio terminal (100), a Radio Resource Control, RRC, connection with a base station (200) and enter an RRC connected mode; a step of receiving, by the radio terminal (100), a connected mode discontinuous reception, DRX, parameter configured by the base station (200); and a step of transmitting, by the radio terminal (100), a message including information indicating a connected mode DRX cycle length preferred by the radio terminal (100), to the base station (200).