Conditional Buffer Reporting in Communication Nodes for Low-Latency XR
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Solution Overview
Problem
Existing data buffer report mechanisms in wireless communication systems fail to meet the high-rate and low-delay requirements of XR services, leading to user experience issues due to delayed feedback and inefficient resource allocation.
Innovation Solution
A method for triggering or canceling buffer status reports based on specific conditions, such as data packet availability and assembly, to optimize resource allocation and reduce power consumption, packet loss, and waste of uplink resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the existing data buffer report mechanism is used, then the system complexity is low, but the response duration is too long to meet XR service requirements
Solution Approach 1:
The patent segments the data buffer report mechanism by introducing multiple report types (first type and second type) with different triggering conditions. The first type is triggered by data packet availability while the second type is triggered by MAC PDU assembly status, allowing the system to select appropriate reporting granularity for different service requirements without overwhelming complexity
Solution Approach 2:
The patent implements dynamic buffer status reporting by enabling the terminal to selectively trigger different report types based on real-time conditions. The reporting mechanism transitions from static periodic reporting to dynamic event-driven reporting, adjusting the reporting behavior according to data availability and assembly status to meet varying XR service requirements
2Duration of action of moving object
If buffer status reports are triggered frequently to reduce delay, then the response duration is reduced, but the power consumption increases
Solution Approach 1:
The patent implements conditional periodic reporting where buffer status reports are triggered periodically only when specific conditions are met (data packet availability or MAC PDU assembly). This selective periodic action reduces unnecessary reporting events and associated power consumption while maintaining timely response for actual data transmission needs
Solution Approach 2:
The patent introduces feedback mechanisms where the terminal monitors data packet availability and MAC PDU assembly status to dynamically control buffer status reporting. This feedback-driven approach ensures reports are generated only when necessary, optimizing the balance between response duration and power consumption by avoiding redundant reporting
3Measurement precision
If buffer status reports are sent for every data packet, then the resource allocation accuracy is improved, but the uplink resource waste increases
Solution Approach 1:
The patent segments buffer status reporting into two distinct types: one triggered by data packet availability and another by MAC PDU assembly status. This segmentation allows the system to report buffer status at appropriate granularity levels, providing sufficient resource allocation accuracy only when necessary while avoiding redundant reports that would waste uplink resources
Solution Approach 2:
The patent changes the triggering parameters for buffer status reports from continuous packet-level monitoring to event-driven triggers based on data availability and assembly status. This parameter change reduces the frequency of buffer status reports while maintaining adequate resource allocation accuracy, thereby reducing uplink resource waste from excessive reporting
4Loss of information
If the existing BSR mechanism is used, then the implementation is simple, but the data amount information is insufficient for XR services
Solution Approach 1:
The patent segments the buffer status reporting into multiple types with different information scopes. The first type reports buffer status based on data packet availability while the second type reports based on MAC PDU assembly status, providing comprehensive data amount information for XR services without requiring a completely complex new mechanism
Solution Approach 2:
The patent creates a universal buffer status reporting mechanism that handles multiple service types through different report types. The same basic mechanism structure supports both traditional services and XR services by selecting appropriate report types, providing multi-functionality without requiring separate complex mechanisms for different services
Data Source
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AI summary
The present application discloses a method and apparatus for a communication node used for wireless communication. The method comprises: in response to a case that a first data packet set is valid, the communication node triggering first buffer status reporting; in response to a case that any candidate condition in a first candidate condition set is satisfied, canceling the first buffer status reporting, wherein the first data packet set comprises at least one data packet, each data packet in the first data packet set is a data packet on an MAC sublayer, the first candidate condition set comprises at least a first condition and a second condition, the first condition comprises that the first data packet set is discarded, the second condition comprises that a first MAC PDU is transmitted and the first buffer status reporting is generated before the first MAC PDU is assembled, and the first MAC PDU indicates a buffer status. Aiming at a high-rate low-latency service having a dependency relationship, the present application provides a buffer status reporting solution based on data packet discarding, and the present solution avoids resource waste and reduces power consumption.