QoS Flow Correlation for Synchronized Multi-Stream Transmission
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Solution Overview
Problem
Existing communication systems face challenges in performing cooperative and synchronized transmission, particularly in scenarios requiring ultra-low latency and high reliability, such as immersive multi-modality services like VR, where asynchronous data playback significantly affects user experience.
Innovation Solution
A communication method and device that acquire first information including correlation or synchronization state, enabling cooperative or synchronized transmission by processing data of correlated objects concurrently within specific time windows or conditions, using QoS flow, PDU session, LCH, and data burst level information to ensure synchronized data delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cooperative transmission or synchronized transmission is implemented in existing communication systems, then the capability for multi-modality services is improved, but the system complexity and difficulty of achieving ultra-low latency synchronization increase
Solution Approach 1:
The patent segments the synchronization and cooperative transmission functionality into distinct QoS flow levels (first QoS flow and second QoS flow) with separate correlation information handling. This segmentation allows independent management of different data streams while maintaining overall system synchronization, thereby reducing system complexity while preserving multi-modality service capabilities.
Solution Approach 2:
The patent introduces a new dimension of correlation information at the QoS flow level, which is separate from traditional packet-level synchronization mechanisms. By operating at this higher abstraction dimension, the system can manage multiple correlated data streams efficiently without increasing底层 complexity, enabling multi-modality services with ultra-low latency requirements.
2Ease of operation
If data packets are transmitted asynchronously in existing systems, then transmission simplicity is maintained, but user experience in immersive services deteriorates due to playback desynchronization
Solution Approach 1:
The patent applies preliminary action by establishing correlation information between QoS flows before data transmission occurs. The network device configures and indicates correlation relationships in advance, allowing receiving devices to pre-prepare for synchronized playback of correlated data streams. This preliminary setup maintains transmission simplicity while ensuring reliable synchronization without requiring complex real-time coordination.
Solution Approach 2:
The patent implements feedback mechanisms where correlation information is indicated from the network device to the communication terminal, and synchronization status is monitored and reported. This feedback loop ensures that asynchronous transmissions are corrected and adjusted to achieve synchronized playback, maintaining ease of operation while improving reliability for immersive services.
3Device complexity
If traditional communication protocols are used without QoS flow-level correlation management, then protocol simplicity is maintained, but the ability to achieve ultra-low latency synchronization deteriorates
Solution Approach 1:
The patent establishes correlation information at the QoS flow level before data transmission, enabling receiving devices to pre-configure synchronization parameters and timing relationships. This preliminary action eliminates the need for complex real-time synchronization protocols, maintaining protocol simplicity while achieving ultra-low latency through pre-coordinated transmission and playback timing.
Solution Approach 2:
The patent operates at the QoS flow dimension, which is above the packet level, to manage correlation and synchronization. This dimensional shift allows for more efficient resource allocation and timing coordination without increasing protocol complexity at lower levels. The correlation information at this higher dimension enables ultra-low latency synchronization through streamlined processing and reduced overhead.
4Loss of energy
If correlated data streams are transmitted without explicit correlation information, then transmission overhead is reduced, but the precision of synchronization playback deteriorates
Solution Approach 1:
The patent applies local quality by providing correlation information specifically at the QoS flow level where it is most needed for synchronization, rather than adding comprehensive correlation data to every packet. This localized approach to information provision reduces overall transmission overhead while maintaining high synchronization precision for correlated data streams through targeted correlation indicators.
Solution Approach 2:
The patent moves correlation information management to the QoS flow dimension, which is higher than the packet dimension. This dimensional change allows correlation information to be transmitted less frequently (at flow establishment and renewal) rather than with every packet, significantly reducing transmission overhead. Meanwhile, synchronization precision is maintained through the use of correlation information combined with timing parameters and playback buffer management at this higher dimension.
Data Source
AI summary
Provided is a communication method. The method is performed by a communication terminal, and includes: acquiring first information, wherein the first information includes at least one of a correlation or a synchronization state; and performing cooperative transmission or synchronized transmission based on the first information. The correlation includes at least one of: a correlation between a plurality of user equipments (UEs), a correlation between a plurality of applications, a correlation between a plurality of services, a correlation between a plurality of quality of service (QoS) flows, a correlation between a plurality of logical channels (LCHs), a correlation between a plurality of logical channel groups (LCGs), a correlation between a plurality of packet data unit (PDU) sessions, a correlation between a plurality of data bursts, or a correlation between a plurality of data packets.