Cell Change Paging Feedback for Lower Base Station Energy
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Solution Overview
Problem
The increased power consumption of base stations due to higher data rates, larger transmission bandwidths, and dense station deployment in 5G and 6G networks, particularly with the use of millimeter waves and terahertz frequencies, is exacerbated by unnecessary paging message transmission to cells where the terminal device is not located, leading to inefficient energy consumption.
Innovation Solution
A communication method where a terminal device sends an uplink signal to notify the network of cell changes, allowing the network to send paging messages only via the camped cell, using trigger conditions based on cell status, moving speed, and camping time, thereby reducing energy consumption on both the terminal and network sides.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device sends paging messages to multiple cells to ensure terminal device reachability, then the reliability of message delivery is improved, but the energy consumption of the network device increases
Solution Approach 1:
The terminal device feeds back its location information to the network device by sending an uplink signal when it changes camped cells. This feedback mechanism enables the network device to update its knowledge of the terminal's location, allowing subsequent paging messages to be directed only to the current camped cell rather than multiple cells, thus reducing energy consumption while maintaining delivery reliability.
Solution Approach 2:
The terminal device proactively sends location update information to the network device before the network needs to page it. This preliminary action of reporting location changes ensures that when paging is necessary, the network device already has current location information and can target the paging message precisely to the correct cell.
2Measurement precision
If the terminal device frequently sends uplink signals to report cell changes, then the accuracy of location tracking is improved, but the energy consumption of the terminal device increases
Solution Approach 1:
The patent introduces trigger conditions with thresholds (camping time thresholds, speed thresholds) that control when the terminal device should send location updates. By changing the parameters that govern update frequency based on these thresholds, the system achieves a balance between location tracking accuracy and terminal energy consumption, avoiding unnecessary frequent updates while maintaining sufficient precision.
3Area of stationary object
If the network device monitors all cells for terminal presence, then the coverage area is improved, but the power consumption increases
Solution Approach 1:
The patent extracts the location reporting function from the network device's continuous monitoring burden and places it on the terminal device. The terminal actively reports when it changes cells, allowing the network device to stop monitoring all cells continuously and instead rely on terminal-provided location information, thereby reducing power consumption while maintaining coverage.
Data Source
AI summary
Disclosed embodiments provide a communication method and apparatus, a computer-readable storage medium, and a computer program product. In the method, when a camped cell of a terminal device changes from a first cell to a second cell and the terminal device satisfies a trigger condition for sending an uplink signal, the terminal device sends the uplink signal to a network device of the second cell, where the uplink signal indicates an identifier of the terminal device, and the trigger condition is associated with at least one of the following: a working status of the second cell, a moving speed of the terminal device, camping time of the terminal device in the first cell, or camping time of the terminal device in the second cell.