Cell Wake-Up Signaling for Deep Sleep Mode Transitions
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Solution Overview
Problem
Existing network energy saving mechanisms lack a comprehensive mechanism to utilize potential energy saving states or sleep modes and transitions between these states, limiting the efficiency of energy conservation in communication networks.
Innovation Solution
A method and device for configuring a terminal device to transmit a wake-up request to a cell, allowing for a change in operation mode from a deeper energy-saving state to a lighter state, including configurations for request transmission and mode detection, utilizing time windows and conditions for optimal resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a cell operates in a deeper energy-saving mode, then energy consumption is reduced, but the cell cannot respond to wake-up requests or provide service
Solution Approach 1:
The cell dynamically switches between different operation modes (deeper energy-saving mode and lighter energy-saving mode) based on service requirements. The network device can configure the terminal to transmit wake-up requests during specific time windows, and the cell transitions from a non-responsive deeper energy-saving state to a responsive lighter energy-saving state upon receiving a wake-up request, resolving the contradiction between energy saving and responsiveness
Solution Approach 2:
The cell operates in periodic cycles between deeper energy-saving mode and lighter energy-saving mode. During deeper energy-saving periods, the cell minimizes energy consumption by not monitoring for wake-up requests. At predetermined intervals or upon receiving specific signals, the cell transitions to lighter energy-saving mode to handle wake-up requests and provide service, creating a periodic pattern that balances energy efficiency with operational responsiveness
2Loss of energy
If the network implements a comprehensive mechanism for sleep mode transitions, then energy saving efficiency is improved, but the system complexity increases
Solution Approach 1:
The terminal device autonomously determines whether to transmit a wake-up request based on configured criteria and current service needs, without requiring complex centralized control for every decision. The network device provides configuration parameters (such as time windows and mode transition conditions), but the actual wake-up decision and execution are performed by the terminal itself, reducing overall system complexity while maintaining comprehensive energy-saving functionality
Solution Approach 2:
The system manages complexity by focusing on changing a limited set of key parameters (operation mode, time window configurations, wake-up request conditions) rather than controlling every aspect of cell behavior. The network device configures specific parameters that govern mode transitions, and the terminal adjusts its behavior by modifying these parameters based on predefined rules, simplifying the implementation of comprehensive energy-saving mechanisms
Data Source
AI summary
Embodiments of the present disclosure relate to methods, devices and computer readable media of communication. A terminal device receives a configuration for wake up of a first cell, and transmits a wake up request to the first cell based on the configuration. The configuration comprises at least one of the following: a first configuration for transmission of the wake up request; or a second configuration for detection of a change of an operation mode of the first cell from a first mode to a second mode, the first mode having deeper energy saving than the second mode. In this way, a network may be activated from a deeper energy saving mode to a lighter energy saving mode.