DRX Indication Signal Sequence for Terminal Power Saving
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing Discontinuous Reception (DRX) mechanism in wireless communication systems leads to unnecessary power consumption as terminal devices are often woken up during on durations even when no control channel is detected, especially under low service load conditions, reducing the effectiveness of power-saving efforts.
Innovation Solution
A method where terminal devices receive a DRX indication signal with a specific sequence to determine whether to wake up or sleep during on durations, based on their device group and Physical Cell Identifier (PCI), allowing them to effectively identify and execute corresponding operations to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device wakes up during every on duration to detect control channel, then the control channel detection reliability is improved, but the power consumption increases unnecessarily when no service is present
Solution Approach 1:
The network device sends a DRX indication signal before the on duration to preliminarily indicate whether the terminal device needs to wake up. This preliminary action allows the terminal to avoid unnecessary wake-ups while ensuring it wakes up when needed, thus maintaining detection reliability while reducing power consumption.
Solution Approach 2:
The terminal device autonomously determines whether to wake up or sleep based on the DRX indication signal received from the network. This self-service mechanism enables the terminal to make intelligent decisions about wake-up timing without continuous network control, optimizing power consumption while maintaining reliable control channel detection when services are present.
2Use of energy by moving object
If the terminal device uses group-based DRX sequences, then the power consumption is reduced by avoiding unnecessary wake-ups, but the device complexity increases due to sequence identification and matching operations
Solution Approach 1:
The patent uses different sequence parameters (sequence IDs, cyclic shifts, or root indices) to differentiate between multiple device groups. Each terminal device identifies its group by matching its parameters with the received DRX indication signal, enabling power-saving operation without requiring complex processing - only simple parameter comparison operations are needed.
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
Disclosed by the present application are a discontinuous reception method, a network device and a terminal device, the method comprising: a network device determining a first sequence corresponding to a terminal device according to information of a device group to which the terminal device belongs, the first sequence being used for instructing the terminal device to awaken or sleep within the activation period of a discontinuous reception (DRX) period after the first sequence; the terminal device belongs to a device group from among M device groups, and the first sequence corresponds to the device group to which the terminal device belongs, different device groups from among the M device groups corresponding to different first sequences; the network device sending a DRX instruction signal to the terminal device, the DRX instruction signal comprising the first sequence. The first sequence is related to specific information, such as the device group of the terminal device, and thus terminal devices of different attributes may effectively identify respective first sequences, and awaken or sleep during the DRX period after the first sequence according to the instruction of the first sequence.