Dynamic Cell Activation in Wireless Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing power consumption and scheduling due to the constant activation of cells, especially in scenarios with varying data traffic loads, leading to increased energy expenditure and reduced flexibility.
Innovation Solution
Implementing dynamic cell activation and deactivation techniques, where network entities configure cells for activation and deactivation based on control information received from user equipment (UE), allowing for efficient scheduling and power savings by activating/deactivating cells in response to traffic demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cells are constantly activated to ensure communication coverage and capacity, then system reliability and service availability are improved, but network power consumption increases
Solution Approach 1:
The patent implements dynamic cell activation and deactivation where cells transition between active and dormant states based on real-time traffic conditions. Network entities receive UE assistance information indicating supported switching times and activation rates, then dynamically adjust cell states to match actual demand, resolving the contradiction between maintaining service availability and reducing power consumption.
Solution Approach 2:
The patent changes the operational parameters of cells from static (always active) to dynamic (variable activation state). By adjusting activation/deactivation timing and rates based on UE capabilities and traffic patterns, the system optimizes the balance between service reliability and energy efficiency.
2Loss of energy
If cells are dynamically activated and deactivated to reduce power consumption, then energy efficiency is improved, but scheduling flexibility and response time may deteriorate
Solution Approach 1:
The patent applies preliminary action by having UEs pre-indicate their capability to support dynamic cell activation and deactivation, including supported switching times and activation rates. Network entities use this advance information to plan and execute cell state transitions that minimize impact on scheduling responsiveness while achieving energy savings.
Solution Approach 2:
The patent implements feedback mechanisms where UEs provide assistance information about their dynamic cell support capabilities and performance requirements. Network entities use this feedback to adjust activation/deactivation strategies, ensuring that energy efficiency improvements do not compromise scheduling flexibility or response time.
3Productivity
If UE provides detailed capability information for dynamic cell activation, then network scheduling efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent applies partial action by having UEs provide only the necessary subset of capability information needed for dynamic cell operation. Instead of reporting all possible parameters, UEs indicate key capabilities such as supported switching times and activation rates, achieving sufficient scheduling efficiency while minimizing signaling overhead.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described that provide for dynamic cell activation and deactivation. A network entity may configure one or more cells for dynamic activation and deactivation, and a UE may provide information to the network entity to allow efficient scheduling and cell activation and deactivation. A UE may provide a capability indication of support for dynamic cell activation and deactivation, along with information such as supported switching times, supported rates of activation and deactivation, a number of cells that can be activated and deactivated, or any combinations thereof. In some cases, a UE may provide UE assistance information to the network, such as in configured periodic reporting, in aperiodic reporting that is activated based on a trigger from the network, in response to a network request, or any combinations thereof.