DRX Start Offset Configuration for Low-Loss XR Packet Scheduling
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Solution Overview
Problem
In XR services, the high time delay requirements and small DRX cycles lead to increased packet loss rates, compromising energy efficiency and data transmission reliability.
Innovation Solution
A method for configuring DRX start offset information through explicit or implicit indications in DCI, network configuration, or protocol stipulation, allowing adaptive adjustment of DRX start offsets to align data packet scheduling with PDB, reducing packet loss and ensuring energy savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a smaller DRX cycle is configured to meet time delay requirements and save energy, then energy efficiency is improved, but packet loss rate increases
Solution Approach 1:
The patent applies dynamics by making the DRX cycle configurable and adaptable rather than fixed. The network can dynamically adjust DRX cycle lengths based on service requirements, allowing the system to switch between shorter cycles for energy savings and longer cycles for reliability when needed. This dynamic configuration resolves the contradiction by enabling context-dependent optimization.
Solution Approach 2:
The patent changes the parameter of DRX cycle length from a fixed value to a configurable range. By allowing the DRX cycle parameter to be adjusted based on service type, traffic conditions, and QoS requirements, the system can optimize the balance between energy consumption and packet loss rate for different scenarios.
2Loss of time
If a smaller DRX cycle is configured to meet time delay requirements, then time delay is reduced, but packet loss rate increases
Solution Approach 1:
The patent enables dynamic adjustment of DRX cycle lengths based on real-time service requirements. For time-sensitive services like XR, the system can configure shorter DRX cycles to reduce latency, while for other services, longer cycles can be used to reduce packet loss. This dynamic adaptation resolves the time delay versus packet loss contradiction.
Solution Approach 2:
The patent applies local quality by allowing different DRX cycle configurations for different services or traffic flows within the same system. Time-sensitive services can receive optimized short DRX cycles, while other services use appropriate cycle lengths, ensuring each service gets the quality it needs without compromising overall system reliability.
3Device complexity
If DRX start offset is fixed, then device complexity is reduced, but adaptability to different service requirements decreases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple DRX start offset values and allowing the network to select the appropriate one based on service requirements. This preparation in advance enables quick adaptation to different services without increasing runtime complexity, as the options are already established and ready for selection.
Solution Approach 2:
The patent changes the DRX start offset from a fixed parameter to a configurable parameter with multiple possible values. This allows the system to adapt to different service requirements by adjusting the start offset parameter, while the underlying mechanism remains simple and manageable through standardized configuration procedures.
Data Source
AI summary
A discontinuous reception (DRX) configuration method, apparatus, and equipment are provided. The method includes: obtaining DRX start offset information by a first method; and determining a target DRX start offset based on the DRX start offset information. The first method includes at least one of the following: receiving first downlink control information (DCI), where the first DCI carries the DRX start offset information; configuring the DRX start offset information by a network side device or stipulating the DRX start offset information in a protocol; or obtaining first information, where the first information carries the DRX start offset information.