Communication Device State Control for Radio Resource Management
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Solution Overview
Problem
Current mobile radio communication systems face inefficiencies in managing radio resources, particularly in maintaining dedicated communication links due to restricted availability and high interference, leading to frequent state changes between active and inactive states, which results in 'ping-pong' effects and delays in resource allocation.
Innovation Solution
A communication device with a state control unit that operates in three data transmission states and performs state transitions based on predefined criteria, including timers and buffer store filling levels, to minimize 'ping-pong' effects and optimize resource allocation by transitioning between dedicated and shared communication resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If dedicated communication links are maintained for mobile radio communication terminals, then transmission delay is reduced and data rates are increased, but interference increases and resource availability is restricted
Solution Approach 1:
The system dynamically transitions terminals between CELL_DCH and CELL_FACH states based on activity detection. When a terminal is detected as inactive through monitoring uplink synchronization maintenance and buffer status, the system transitions it from dedicated (CELL_DCH) to shared (CELL_FACH) resources, thereby reducing interference while maintaining service availability.
Solution Approach 2:
The invention changes the resource allocation parameter by switching between two distinct resource modes: dedicated resources (CELL_DCH) for active terminals and shared resources (CELL_FACH) for inactive terminals. This parameter change allows the system to optimize the trade-off between transmission performance and interference levels.
2Adaptability or versatility
If state changes between CELL_DCH and CELL_FACH are frequent, then resource allocation adapts to activity, but 'ping-pong' effects occur and system stability deteriorates
Solution Approach 1:
The system performs preliminary activity detection and evaluation before initiating state transitions. By monitoring synchronization maintenance status and buffer status in advance, the system ensures that transitions from CELL_DCH to CELL_FACH are based on confirmed inactivity patterns, preventing premature or erroneous state changes that would cause ping-pong effects.
Solution Approach 2:
The invention implements a feedback mechanism where the system continuously monitors terminal activity status (uplink synchronization, buffer status) and uses this feedback to control state transitions. This feedback loop ensures that transitions occur only when appropriate conditions are met, maintaining system stability while adapting to changing activity patterns.
Data Source
AI summary
The communication device has three useful data transmission states, where the communication device in the first and in the second state has associated first communication resources and in the third state has associated second communication resources, with the second communication resources being fewer than the first communication resources. Provision is made for there to be state changes from the first state to the second state, from the second state to the third state, from the third state to the first state and from the second state to the first state.