XR Traffic Information Indication via Dedicated MAC CE
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Solution Overview
Problem
Current wireless communication systems face challenges in managing specialized data flows for applications like virtual reality and augmented reality, which require efficient data traffic management and intelligent scheduling to ensure optimal performance and resource allocation.
Innovation Solution
User equipment (UE) generates and transmits traffic information to a base station regarding data traffic groups, including latency, reliability, and priority levels, allowing the base station to make informed scheduling decisions, with this information being transmitted within MAC control elements or uplink control channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traffic information is transmitted using existing uplink control channels, then resource allocation efficiency is improved, but the channels become overloaded and cannot accommodate additional specialized data flow information
Solution Approach 1:
The patent segments traffic information transmission by creating a dedicated MAC CE structure separate from traditional UCI transmission. This allows traffic information to be transmitted through a specialized channel (MAC CE in PUSCH) rather than overloading existing uplink control channels, thus resolving the capacity conflict while maintaining resource allocation efficiency.
2Productivity
If detailed traffic information is provided to enable intelligent scheduling, then scheduling performance is improved, but system complexity increases
Solution Approach 1:
The patent extracts traffic information transmission from the complex UCI framework and places it in a dedicated MAC CE structure. This separation simplifies the overall system by isolating the traffic information handling logic, allowing detailed scheduling information to be provided without proportionally increasing system complexity.
Solution Approach 2:
The patent changes the transmission parameter format by using MAC CE structures with specific fields for traffic information (such as data group indicators, priority levels, latency requirements). This standardized parameter approach enables intelligent scheduling while maintaining manageable system complexity through structured data representation.
3Loss of information
If multiple UCIs are multiplexed in PUCCH, then information transmission completeness is improved, but resource constraints lead to omission of critical traffic information
Solution Approach 1:
The patent introduces MAC CE as an intermediary structure that carries traffic information within the data payload (PUSCH) rather than requiring separate control channel resources. This intermediary approach allows complete traffic information transmission without competing for limited PUCCH resources, as the traffic information is embedded in the data transmission path.
Data Source
AI summary
Methods, apparatuses, and systems are disclosed for providing traffic information pertaining to a data traffic group, e.g., for use in 3GPP XR communications. A UE may transmit a traffic flow including data of a certain type (e.g., video, audio, control/pose) generated by an application implemented on the UE, such as an augmented reality application. The traffic flow may include bursts of data traffic groups, wherein each group includes a plurality of data packets containing a functional set of data, such as data for encoding a single video frame. A UE may generate and transmit, to a base station, traffic information regarding the nature, status, performance, and/or constraints of the data traffic group. The base station may use the traffic information to make intelligent scheduling decisions regarding the data traffic group.