DRX Timer Adjustment for Wireless Packet Loss Reduction
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Solution Overview
Problem
Discontinuous Reception (DRX) in wireless communication systems struggles to adapt to delay-sensitive and jitter-sensitive traffic, leading to significant packet loss and increased power consumption, particularly in scenarios like Virtual Reality (VR) and Extended Reality (XR) applications.
Innovation Solution
A method that dynamically adjusts the running of DRX-related timers based on received data, allowing for flexible DRX operation and reducing packet loss and power consumption by synchronizing timer adjustments with data arrival patterns, applicable to various communication scenarios including V2X and terminal-base station communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If DRX timer runs periodically to reduce power consumption, then power consumption is reduced, but packet loss increases for delay-sensitive traffic with large jitter
Solution Approach 1:
The patent applies dynamics by making the DRX timer adjustable and flexible rather than fixed. The timer can be dynamically adjusted based on traffic characteristics, allowing the system to adapt between periodic operation (for power saving) and more frequent sampling (for delay-sensitive traffic), thereby resolving the contradiction between power consumption and packet loss.
Solution Approach 2:
The patent changes the parameter of timer duration and timing based on traffic type. For delay-sensitive traffic with large jitter, the system adjusts the DRX timer parameters to allow more frequent wake-ups or earlier sampling, while for periodic traffic it maintains longer intervals. This parameter adaptation resolves the contradiction by optimizing timer behavior for different traffic scenarios.
2Use of energy by stationary object
If DRX timer waits for periodic data arrival, then power consumption is reduced, but delay sensitivity is compromised for jittered traffic
Solution Approach 1:
The system dynamically adjusts the DRX timer behavior based on detected traffic patterns. For delay-sensitive traffic, the timer is configured to wake up earlier or more frequently, reducing waiting time and improving delay sensitivity. For periodic traffic, the timer maintains longer intervals to save power, thus dynamically resolving the contradiction between power consumption and delay sensitivity.
Solution Approach 2:
The patent implements preliminary action by detecting traffic characteristics in advance and pre-configuring the DRX timer accordingly. When delay-sensitive traffic is detected, the system proactively adjusts the timer to reduce waiting time before data arrival, preventing delay issues before they occur while still maintaining power efficiency for other traffic types.
3Device complexity
If fixed DRX timer is used for periodic reception, then system complexity is reduced, but adaptability to different traffic types deteriorates
Solution Approach 1:
The patent applies self-service by enabling the DRX timer system to automatically detect traffic characteristics and adjust its own parameters without external intervention. The system monitors data arrival patterns, identifies traffic types (periodic vs. delay-sensitive), and autonomously configures appropriate timer values, thereby achieving high adaptability while keeping the control mechanism relatively simple.
Solution Approach 2:
The system uses feedback mechanisms to monitor traffic patterns and adjust DRX timer behavior accordingly. By continuously observing data arrival characteristics and feeding this information back to the timer configuration, the system adapts to different traffic types automatically. This feedback loop provides versatility without requiring complex manual configuration or multiple dedicated timers for each traffic type.
Data Source
AI summary
The present application discloses a method and a device for DRX in wireless communications. A first node receives a first signaling and a first bit block, the first signaling being used for scheduling the first bit block; and maintains a first timer; and as a response to receiving the first signaling, starts or restarts a second timer; and when either of the first timer and the second timer is in a running state, monitors a first-type target signaling; herein, the first timer and the second timer are configured for a same DRX group; the action of maintaining a first timer comprises adjusting the time while the first timer is running; when each condition in a first condition set is satisfied, the reception of the first bit block is used for adjusting the time while the first timer is running. The present application supports DRX running in an effective manner.