Core Network Control Entity Signaling Retention for Power Saving
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Solution Overview
Problem
Conventional methods for user equipment in communication systems result in wasteful power consumption due to frequent tracking area updates (TAU/RAU) requests, as the equipment must continuously wait for downlink data even when no data is available, leading to inefficient power usage, especially for devices that send such requests frequently.
Innovation Solution
A method where the core network control entity determines if downlink data is buffered for a user equipment after receiving a TAU/RAU request, and if so, retains the signaling connection to trigger the server to send the data, while disabling the receiver if no data is indicated, thereby optimizing power usage by reducing unnecessary waiting and signaling consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the core network control entity notifies the server each time receiving a TAU/RAU request, then the server can send buffered downlink data to the user equipment, but the user equipment must enable the receiver to wait for downlink data even when no data is available, causing power consumption waste
Solution Approach 1:
The core network control entity performs preliminary checking of the server's downlink data buffer status before triggering the user equipment to wake up or maintain active reception. By checking in advance whether the server actually has data to send, the system avoids unnecessary user equipment activation and reduces power consumption while ensuring data delivery only when needed.
2Ease of operation
If the user equipment frequently sends TAU/RAU requests, then the equipment can maintain network connectivity, but the waiting time for downlink data increases significantly, adversely affecting power saving
Solution Approach 1:
The core network control entity checks the server's data buffer status before the user equipment needs to wait for downlink data. This preliminary check allows the system to inform the user equipment in advance whether data will be available, eliminating unnecessary idle waiting time while maintaining network connectivity through selective TAU/RAU requests.
Solution Approach 2:
The system implements a feedback mechanism where the core network control entity informs the user equipment about the server's data buffer status. This feedback allows the user equipment to adjust its behavior accordingly - either maintaining active reception when data is available or entering power-saving mode when no data is expected, thus reducing idle waiting time.
3Reliability
If the core network control entity retains signaling connection when downlink data is buffered, then data can be sent to the user equipment, but unnecessary signaling connections are maintained when no data is available, increasing signaling consumption
Solution Approach 1:
The core network control entity performs a preliminary check of the server's downlink data buffer status before deciding whether to retain the signaling connection. This advance checking ensures that signaling connections are maintained only when actually needed for data transmission, preventing unnecessary signaling consumption while ensuring data transmission capability when data is available.
Data Source
AI summary
A method and device for transmitting data are provided. The method includes: determining, after receiving a first message sent by a user equipment, whether first indication information is set, where the first indication information indicates that a server buffers downlink data to be sent to the user equipment; and when determining that the first indication information is set, retaining a signaling connection to the user equipment, and triggering the server that buffers the downlink data to send the downlink data to the user equipment. The method and device for transmitting data according to the embodiments of the present invention can save power of a user equipment.