Wireless Tethered Uplink Jitter Reporting for XR Traffic Scheduling
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Solution Overview
Problem
5G NR networks face challenges in managing uplink jitter for wireless tethered devices, particularly in supporting high-capacity and low-latency applications like XR services, which require stringent radio performance and power efficiency, especially when multiple traffic flows with varying packet sizes and arrival rates are involved.
Innovation Solution
User equipment analyzes protocol data units based on uplink jitter reporting criteria, determines uplink jitter values, and transmits reports to the radio access network node to schedule resources effectively, supporting multiple traffic flows via short-range wireless communication links like WiGig, Wi-Fi, or Bluetooth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the radio access network node schedules uplink resources based on expected packet transmission periodicity without considering actual jitter, then resource allocation is simplified, but packet transmission timing accuracy deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the user equipment measures actual packet reception periodicity, compares it with expected periodicity, calculates jitter values, and reports them to the radio access network node. This feedback loop enables the scheduler to adjust resource allocation based on actual jitter conditions, improving timing accuracy while maintaining manageable complexity through automated measurements and standardized reporting formats.
2Manufacturing precision
If the user equipment continuously monitors and reports uplink jitter for all traffic flows, then network scheduling accuracy is improved, but signaling overhead and power consumption increase
Solution Approach 1:
The patent applies local quality by differentiating monitoring and reporting behavior based on traffic flow characteristics. The user equipment calculates jitter for each traffic flow individually and applies separate reporting criteria, allowing continuous monitoring of all flows but selective reporting only for those exceeding thresholds or requiring priority scheduling. This approach maintains scheduling accuracy for critical flows while reducing overall signaling overhead and power consumption.
3Device complexity
If multiple traffic flows with varying packet sizes and arrival rates are aggregated without separate jitter analysis, then processing complexity is reduced, but QoS differentiation capability deteriorates
Solution Approach 1:
The patent segments the traffic handling process by maintaining separate jitter calculations and reporting mechanisms for each traffic flow. The user equipment identifies individual traffic flows, measures their respective packet reception periodicities, and computes jitter values independently for each flow. This segmentation enables the network to apply flow-specific scheduling decisions, preserving QoS differentiation capability while managing complexity through modular, flow-independent processing steps.
Data Source
AI summary
A user equipment modem device and a user or machine appliance establish a short-range wireless communication link. The modem device may receive from a radio access network node uplink jitter reporting configuration information usable by the modem device to determine when and how to report uplink jitter corresponding to traffic received by the modem device via the short-range wireless communication link. Uplink jitter may be based on an actual arrival of packets by the modem device from the appliance with respect to an expected packet arrival periodicity corresponding to the appliance or an application executing thereon. The node may schedule uplink resources usable by the modem device to transmit packets received from the appliance to the node. The node may transmit a grant of the scheduled uplink resources to the modem device, which may use the granted uplink resources to transmit, to the node, uplink traffic received from the appliance.