Wireless Device Operating Zones for XR Power Saving
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Solution Overview
Problem
Existing wireless communication systems, particularly in extended reality (XR) applications, face challenges in achieving power savings while maintaining low latency and high throughput, especially with the use of discontinuous reception (DRX) techniques which do not effectively account for XR traffic patterns.
Innovation Solution
The implementation of device-specific and/or group-specific downlink data configurations that define operating zones for wireless communication devices, allowing for power saving modes without compromising latency or throughput, even in XR applications. These zones can be used by both DRX-enabled and non-DRX enabled devices, enhancing power saving gains and supporting multiple user data transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous reception (DRX) techniques are used for power saving, then energy consumption is reduced, but latency and throughput performance deteriorates
Solution Approach 1:
The active time in DRX cycles is segmented into multiple operating zones (first operating zone, second operating zone, third operating zone) with different monitoring behaviors. The first zone monitors for wake-up signals, the second zone monitors for downlink data, and the third zone is a do-not-monitor zone. This segmentation allows the device to reduce power consumption by selectively monitoring only in specific zones while maintaining low latency through targeted monitoring in other zones when needed.
Solution Approach 2:
The system dynamically adjusts the configuration of operating zones based on traffic patterns and service requirements. The network can configure different durations and positions for each operating zone, and the device adapts its monitoring behavior accordingly. This dynamic configuration enables optimization of both power consumption and latency performance based on real-time conditions.
2Loss of time
If monitoring for downlink signals is continuous to maintain low latency, then latency is reduced, but power consumption increases
Solution Approach 1:
Instead of continuous monitoring, the device performs periodic monitoring at specific intervals defined by the operating zones. The device monitors for wake-up signals during the first operating zone, then monitors for downlink data during the second operating zone, and skips monitoring during the third do-not-monitor zone. This periodic action pattern reduces power consumption while maintaining acceptable latency through strategically timed monitoring opportunities.
3Duration of action of stationary object
If DRX cycles are extended to save power, then battery life is prolonged, but throughput and latency performance worsens
Solution Approach 1:
Different portions of the DRX cycle are assigned different quality characteristics through the operating zones. The first and second operating zones have high monitoring activity suitable for low-latency applications, while the third do-not-monitor zone provides extended power saving for non-urgent traffic. This local quality differentiation allows the system to achieve both long battery life and acceptable throughput by matching monitoring intensity to traffic urgency.
Data Source
AI summary
Wireless communication devices, systems, and methods related to power saving, including during connected mode operation and for extended reality (XR) data communications with or without discontinuous reception (DRX), are provided. For example, a method of wireless communication includes receiving, while in a connected mode, a configuration based on data traffic for the wireless communication device, the configuration indicating: a first zone associated with a first set of operating parameters for the wireless communication device; and a second zone associated with a second set of operating parameters for the wireless communication device, the second set of operating parameters being different than the first set of operating parameters; operating in the first zone with the first set of operating parameters to monitor for a first downlink communication signal; and operating in the second zone with the second set of operating parameters.