Low-Complexity Terminal Power Saving via Broadcast Signaling
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Solution Overview
Problem
Terminal devices with low complexity capabilities struggle to actively trigger a power saving mode, leading to high signaling overheads in power saving configuration processes.
Innovation Solution
A network device sends broadcast, multicast, or paging messages containing power saving duration information to trigger the power saving mode in terminal devices, reducing the need for individual configurations and signaling overheads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If terminal devices actively trigger power saving mode through individual configuration requests, then power saving can be activated, but signaling overheads increase and low complexity devices cannot trigger the process
Solution Approach 1:
The network device automatically configures power saving parameters for terminal devices without requiring active requests from the terminals. The network side determines and sends power saving duration information to terminals, allowing them to enter power saving mode autonomously based on received configuration, thus eliminating the need for complex triggering mechanisms at the terminal side.
Solution Approach 2:
The network device sends unified power saving configuration information that can be applied to multiple terminal devices simultaneously. This universal configuration approach allows different types of terminals (including low complexity devices) to benefit from power saving mode without requiring device-specific complex interaction protocols.
2Use of energy by moving object
If individual power saving configuration is performed for each terminal device, then specific power saving settings can be applied, but signaling overheads become high
Solution Approach 1:
The network device combines power saving configuration information into unified broadcast or multicast messages that can be received by multiple terminal devices simultaneously. This merging of configuration operations reduces the total signaling overhead compared to individual unicast configurations, while still allowing each terminal to apply the power saving settings appropriately.
3Reliability
If terminal devices remain in active mode to receive network paging, then data and calls can be received, but power consumption increases
Solution Approach 1:
The network device configures periodic TAU request timers that wake terminal devices from power saving mode at specific intervals. During power saving mode, terminals do not receive network paging, but they periodically wake up to check for updates or send TAU requests, thus maintaining basic network reachability while significantly reducing power consumption compared to continuous active monitoring.
Data Source
AI summary
A communication method and apparatus trigger a terminal device with a low complexity capability to activate a power saving mode and reduce signaling overheads in a power saving configuration process. The method may include the terminal device receiving first information from a network device and activates a power saving mode. The first information is received either as broadcast signal, a multicast signal, or a paging message. The first information includes power saving duration information indicating power saving duration, and duration for which the terminal device is in the power saving mode is less than or equal to the power saving duration.